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9965cfb84c5916cb796b1147607e27e0d46fa16c
neovim/src/nvim/ex_cmds.c
Sean Dewar 9965cfb84c vim-patch:9.1.1361: [security]: possible use-after-free when closing a buffer (#33820) 
Problem:  [security]: Possible to open more windows into a closing
          buffer without splitting, bypassing existing "b_locked_split"
          checks and triggering use-after-free
Solution: Disallow switching to a closing buffer. Editing a closing
          buffer (via ":edit", etc.) was fixed in v9.1.0764, but add an
          error message and check just "b_locked_split", as "b_locked"
          is necessary only when the buffer shouldn't be wiped, and may
          be set for buffers that are in-use but not actually closing.
          (Sean Dewar)

closes: vim/vim#17246

6cb1c82840
(cherry picked from commit 627c648252)
2025-05-10 17:07:31 +00:00

4822 lines
150 KiB
C
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// ex_cmds.c: some functions for command line commands
#include <assert.h>
#include <ctype.h>
#include <float.h>
#include <inttypes.h>
#include <limits.h>
#include <math.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "auto/config.h"
#include "klib/kvec.h"
#include "nvim/api/private/helpers.h"
#include "nvim/arglist.h"
#include "nvim/ascii_defs.h"
#include "nvim/autocmd.h"
#include "nvim/autocmd_defs.h"
#include "nvim/buffer.h"
#include "nvim/buffer_defs.h"
#include "nvim/buffer_updates.h"
#include "nvim/bufwrite.h"
#include "nvim/change.h"
#include "nvim/channel.h"
#include "nvim/charset.h"
#include "nvim/cmdexpand_defs.h"
#include "nvim/cmdhist.h"
#include "nvim/cursor.h"
#include "nvim/decoration.h"
#include "nvim/diff.h"
#include "nvim/digraph.h"
#include "nvim/drawscreen.h"
#include "nvim/edit.h"
#include "nvim/errors.h"
#include "nvim/eval.h"
#include "nvim/eval/typval.h"
#include "nvim/eval/typval_defs.h"
#include "nvim/ex_cmds.h"
#include "nvim/ex_cmds2.h"
#include "nvim/ex_cmds_defs.h"
#include "nvim/ex_docmd.h"
#include "nvim/ex_eval.h"
#include "nvim/ex_getln.h"
#include "nvim/extmark.h"
#include "nvim/extmark_defs.h"
#include "nvim/fileio.h"
#include "nvim/fold.h"
#include "nvim/getchar.h"
#include "nvim/gettext_defs.h"
#include "nvim/globals.h"
#include "nvim/help.h"
#include "nvim/highlight_defs.h"
#include "nvim/highlight_group.h"
#include "nvim/indent.h"
#include "nvim/input.h"
#include "nvim/macros_defs.h"
#include "nvim/main.h"
#include "nvim/mark.h"
#include "nvim/mark_defs.h"
#include "nvim/mbyte.h"
#include "nvim/memline.h"
#include "nvim/memline_defs.h"
#include "nvim/memory.h"
#include "nvim/message.h"
#include "nvim/mouse.h"
#include "nvim/move.h"
#include "nvim/normal.h"
#include "nvim/ops.h"
#include "nvim/option.h"
#include "nvim/option_defs.h"
#include "nvim/option_vars.h"
#include "nvim/os/fs.h"
#include "nvim/os/fs_defs.h"
#include "nvim/os/input.h"
#include "nvim/os/os.h"
#include "nvim/os/os_defs.h"
#include "nvim/os/shell.h"
#include "nvim/os/time.h"
#include "nvim/path.h"
#include "nvim/plines.h"
#include "nvim/pos_defs.h"
#include "nvim/profile.h"
#include "nvim/quickfix.h"
#include "nvim/regexp.h"
#include "nvim/regexp_defs.h"
#include "nvim/search.h"
#include "nvim/spell.h"
#include "nvim/state_defs.h"
#include "nvim/strings.h"
#include "nvim/terminal.h"
#include "nvim/types_defs.h"
#include "nvim/ui.h"
#include "nvim/ui_defs.h"
#include "nvim/undo.h"
#include "nvim/vim_defs.h"
#include "nvim/window.h"
/// Case matching style to use for :substitute
typedef enum {
kSubHonorOptions = 0, ///< Honor the user's 'ignorecase'/'smartcase' options
kSubIgnoreCase, ///< Ignore case of the search
kSubMatchCase, ///< Match case of the search
} SubIgnoreType;
/// Flags kept between calls to :substitute.
typedef struct {
bool do_all; ///< do multiple substitutions per line
bool do_ask; ///< ask for confirmation
bool do_count; ///< count only
bool do_error; ///< if false, ignore errors
bool do_print; ///< print last line with subs
bool do_list; ///< list last line with subs
bool do_number; ///< list last line with line nr
SubIgnoreType do_ic; ///< ignore case flag
} subflags_T;
/// Partial result of a substitution during :substitute.
/// Numbers refer to the buffer _after_ substitution
typedef struct {
lpos_T start; // start of the match
lpos_T end; // end of the match
linenr_T pre_match; // where to begin showing lines before the match
} SubResult;
// Collected results of a substitution for showing them in
// the preview window
typedef struct {
kvec_t(SubResult) subresults;
linenr_T lines_needed; // lines needed in the preview window
} PreviewLines;
#ifdef INCLUDE_GENERATED_DECLARATIONS
# include "ex_cmds.c.generated.h"
#endif
static const char e_non_numeric_argument_to_z[]
= N_("E144: Non-numeric argument to :z");
/// ":ascii" and "ga" implementation
void do_ascii(exarg_T *eap)
{
char *data = get_cursor_pos_ptr();
size_t len = (size_t)utfc_ptr2len(data);
if (len == 0) {
msg("NUL", 0);
return;
}
bool need_clear = true;
msg_sb_eol();
msg_start();
int c = utf_ptr2char(data);
size_t off = 0;
// TODO(bfredl): merge this with the main loop
if (c < 0x80) {
if (c == NL) { // NUL is stored as NL.
c = NUL;
}
const int cval = (c == CAR && get_fileformat(curbuf) == EOL_MAC
? NL // NL is stored as CR.
: c);
char buf1[20];
if (vim_isprintc(c) && (c < ' ' || c > '~')) {
char buf3[7];
transchar_nonprint(curbuf, buf3, c);
vim_snprintf(buf1, sizeof(buf1), " <%s>", buf3);
} else {
buf1[0] = NUL;
}
char buf2[20];
buf2[0] = NUL;
char *dig = get_digraph_for_char(cval);
if (dig != NULL) {
vim_snprintf(IObuff, sizeof(IObuff),
_("<%s>%s%s %d, Hex %02x, Oct %03o, Digr %s"),
transchar(c), buf1, buf2, cval, cval, cval, dig);
} else {
vim_snprintf(IObuff, sizeof(IObuff),
_("<%s>%s%s %d, Hex %02x, Octal %03o"),
transchar(c), buf1, buf2, cval, cval, cval);
}
msg_multiline(cstr_as_string(IObuff), 0, true, false, &need_clear);
off += (size_t)utf_ptr2len(data); // needed for overlong ascii?
}
// Repeat for combining characters, also handle multiby here.
while (off < len) {
c = utf_ptr2char(data + off);
size_t iobuff_len = 0;
// This assumes every multi-byte char is printable...
if (off > 0) {
IObuff[iobuff_len++] = ' ';
}
IObuff[iobuff_len++] = '<';
if (utf_iscomposing_first(c)) {
IObuff[iobuff_len++] = ' '; // Draw composing char on top of a space.
}
iobuff_len += (size_t)utf_char2bytes(c, IObuff + iobuff_len);
char *dig = get_digraph_for_char(c);
if (dig != NULL) {
vim_snprintf(IObuff + iobuff_len, sizeof(IObuff) - iobuff_len,
(c < 0x10000
? _("> %d, Hex %04x, Oct %o, Digr %s")
: _("> %d, Hex %08x, Oct %o, Digr %s")),
c, c, c, dig);
} else {
vim_snprintf(IObuff + iobuff_len, sizeof(IObuff) - iobuff_len,
(c < 0x10000
? _("> %d, Hex %04x, Octal %o")
: _("> %d, Hex %08x, Octal %o")),
c, c, c);
}
msg_multiline(cstr_as_string(IObuff), 0, true, false, &need_clear);
off += (size_t)utf_ptr2len(data + off); // needed for overlong ascii?
}
if (need_clear) {
msg_clr_eos();
}
msg_end();
}
/// ":left", ":center" and ":right": align text.
void ex_align(exarg_T *eap)
{
int indent = 0;
int new_indent;
if (curwin->w_p_rl) {
// switch left and right aligning
if (eap->cmdidx == CMD_right) {
eap->cmdidx = CMD_left;
} else if (eap->cmdidx == CMD_left) {
eap->cmdidx = CMD_right;
}
}
int width = atoi(eap->arg);
pos_T save_curpos = curwin->w_cursor;
if (eap->cmdidx == CMD_left) { // width is used for new indent
if (width >= 0) {
indent = width;
}
} else {
// if 'textwidth' set, use it
// else if 'wrapmargin' set, use it
// if invalid value, use 80
if (width <= 0) {
width = (int)curbuf->b_p_tw;
}
if (width == 0 && curbuf->b_p_wm > 0) {
width = curwin->w_width_inner - (int)curbuf->b_p_wm;
}
if (width <= 0) {
width = 80;
}
}
if (u_save((linenr_T)(eap->line1 - 1), (linenr_T)(eap->line2 + 1)) == FAIL) {
return;
}
for (curwin->w_cursor.lnum = eap->line1;
curwin->w_cursor.lnum <= eap->line2; curwin->w_cursor.lnum++) {
if (eap->cmdidx == CMD_left) { // left align
new_indent = indent;
} else {
int has_tab = false; // avoid uninit warnings
int len = linelen(eap->cmdidx == CMD_right ? &has_tab : NULL) - get_indent();
if (len <= 0) { // skip blank lines
continue;
}
if (eap->cmdidx == CMD_center) {
new_indent = (width - len) / 2;
} else {
new_indent = width - len; // right align
// Make sure that embedded TABs don't make the text go too far
// to the right.
if (has_tab) {
while (new_indent > 0) {
set_indent(new_indent, 0);
if (linelen(NULL) <= width) {
// Now try to move the line as much as possible to
// the right. Stop when it moves too far.
do {
set_indent(++new_indent, 0);
} while (linelen(NULL) <= width);
new_indent--;
break;
}
new_indent--;
}
}
}
}
new_indent = MAX(new_indent, 0);
set_indent(new_indent, 0); // set indent
}
changed_lines(curbuf, eap->line1, 0, eap->line2 + 1, 0, true);
curwin->w_cursor = save_curpos;
beginline(BL_WHITE | BL_FIX);
}
/// @return the length of the current line, excluding trailing white space.
static int linelen(int *has_tab)
{
char *last;
// Get the line. If it's empty bail out early (could be the empty string
// for an unloaded buffer).
char *line = get_cursor_line_ptr();
if (*line == NUL) {
return 0;
}
// find the first non-blank character
char *first = skipwhite(line);
// find the character after the last non-blank character
for (last = first + strlen(first);
last > first && ascii_iswhite(last[-1]); last--) {}
char save = *last;
*last = NUL;
int len = linetabsize_str(line); // Get line length.
if (has_tab != NULL) { // Check for embedded TAB.
*has_tab = vim_strchr(first, TAB) != NULL;
}
*last = save;
return len;
}
// Buffer for two lines used during sorting. They are allocated to
// contain the longest line being sorted.
static char *sortbuf1;
static char *sortbuf2;
static bool sort_lc; ///< sort using locale
static bool sort_ic; ///< ignore case
static bool sort_nr; ///< sort on number
static bool sort_rx; ///< sort on regex instead of skipping it
static bool sort_flt; ///< sort on floating number
static bool sort_abort; ///< flag to indicate if sorting has been interrupted
/// Struct to store info to be sorted.
typedef struct {
linenr_T lnum; ///< line number
union {
struct {
varnumber_T start_col_nr; ///< starting column number
varnumber_T end_col_nr; ///< ending column number
} line;
struct {
varnumber_T value; ///< value if sorting by integer
bool is_number; ///< true when line contains a number
} num;
float_T value_flt; ///< value if sorting by float
} st_u;
} sorti_T;
static int string_compare(const void *s1, const void *s2) FUNC_ATTR_NONNULL_ALL
{
if (sort_lc) {
return strcoll((const char *)s1, (const char *)s2);
}
return sort_ic ? STRICMP(s1, s2) : strcmp(s1, s2);
}
static int sort_compare(const void *s1, const void *s2)
{
sorti_T l1 = *(sorti_T *)s1;
sorti_T l2 = *(sorti_T *)s2;
int result = 0;
// If the user interrupts, there's no way to stop qsort() immediately, but
// if we return 0 every time, qsort will assume it's done sorting and
// exit.
if (sort_abort) {
return 0;
}
fast_breakcheck();
if (got_int) {
sort_abort = true;
}
// When sorting numbers "start_col_nr" is the number, not the column
// number.
if (sort_nr) {
if (l1.st_u.num.is_number != l2.st_u.num.is_number) {
result = l1.st_u.num.is_number > l2.st_u.num.is_number ? 1 : -1;
} else {
result = l1.st_u.num.value == l2.st_u.num.value
? 0
: l1.st_u.num.value > l2.st_u.num.value ? 1 : -1;
}
} else if (sort_flt) {
result = l1.st_u.value_flt == l2.st_u.value_flt
? 0
: l1.st_u.value_flt > l2.st_u.value_flt ? 1 : -1;
} else {
// We need to copy one line into "sortbuf1", because there is no
// guarantee that the first pointer becomes invalid when obtaining the
// second one.
memcpy(sortbuf1, ml_get(l1.lnum) + l1.st_u.line.start_col_nr,
(size_t)(l1.st_u.line.end_col_nr - l1.st_u.line.start_col_nr + 1));
sortbuf1[l1.st_u.line.end_col_nr - l1.st_u.line.start_col_nr] = NUL;
memcpy(sortbuf2, ml_get(l2.lnum) + l2.st_u.line.start_col_nr,
(size_t)(l2.st_u.line.end_col_nr - l2.st_u.line.start_col_nr + 1));
sortbuf2[l2.st_u.line.end_col_nr - l2.st_u.line.start_col_nr] = NUL;
result = string_compare(sortbuf1, sortbuf2);
}
// If two lines have the same value, preserve the original line order.
if (result == 0) {
return l1.lnum - l2.lnum;
}
return result;
}
/// ":sort".
void ex_sort(exarg_T *eap)
{
regmatch_T regmatch;
int maxlen = 0;
size_t count = (size_t)(eap->line2 - eap->line1) + 1;
size_t i;
bool unique = false;
int sort_what = 0;
// Sorting one line is really quick!
if (count <= 1) {
return;
}
if (u_save((linenr_T)(eap->line1 - 1), (linenr_T)(eap->line2 + 1)) == FAIL) {
return;
}
sortbuf1 = NULL;
sortbuf2 = NULL;
regmatch.regprog = NULL;
sorti_T *nrs = xmalloc(count * sizeof(sorti_T));
sort_abort = sort_ic = sort_lc = sort_rx = sort_nr = sort_flt = false;
size_t format_found = 0;
bool change_occurred = false; // Buffer contents changed.
for (char *p = eap->arg; *p != NUL; p++) {
if (ascii_iswhite(*p)) {
// Skip
} else if (*p == 'i') {
sort_ic = true;
} else if (*p == 'l') {
sort_lc = true;
} else if (*p == 'r') {
sort_rx = true;
} else if (*p == 'n') {
sort_nr = true;
format_found++;
} else if (*p == 'f') {
sort_flt = true;
format_found++;
} else if (*p == 'b') {
sort_what = STR2NR_BIN + STR2NR_FORCE;
format_found++;
} else if (*p == 'o') {
sort_what = STR2NR_OCT + STR2NR_FORCE;
format_found++;
} else if (*p == 'x') {
sort_what = STR2NR_HEX + STR2NR_FORCE;
format_found++;
} else if (*p == 'u') {
unique = true;
} else if (*p == '"') {
// comment start
break;
} else if (check_nextcmd(p) != NULL) {
eap->nextcmd = check_nextcmd(p);
break;
} else if (!ASCII_ISALPHA(*p) && regmatch.regprog == NULL) {
char *s = skip_regexp_err(p + 1, *p, true);
if (s == NULL) {
goto sortend;
}
*s = NUL;
// Use last search pattern if sort pattern is empty.
if (s == p + 1) {
if (last_search_pat() == NULL) {
emsg(_(e_noprevre));
goto sortend;
}
regmatch.regprog = vim_regcomp(last_search_pat(), RE_MAGIC);
} else {
regmatch.regprog = vim_regcomp(p + 1, RE_MAGIC);
}
if (regmatch.regprog == NULL) {
goto sortend;
}
p = s; // continue after the regexp
regmatch.rm_ic = p_ic;
} else {
semsg(_(e_invarg2), p);
goto sortend;
}
}
// Can only have one of 'n', 'b', 'o' and 'x'.
if (format_found > 1) {
emsg(_(e_invarg));
goto sortend;
}
// From here on "sort_nr" is used as a flag for any integer number
// sorting.
sort_nr |= sort_what;
// Make an array with all line numbers. This avoids having to copy all
// the lines into allocated memory.
// When sorting on strings "start_col_nr" is the offset in the line, for
// numbers sorting it's the number to sort on. This means the pattern
// matching and number conversion only has to be done once per line.
// Also get the longest line length for allocating "sortbuf".
for (linenr_T lnum = eap->line1; lnum <= eap->line2; lnum++) {
char *s = ml_get(lnum);
int len = ml_get_len(lnum);
maxlen = MAX(maxlen, len);
colnr_T start_col = 0;
colnr_T end_col = len;
if (regmatch.regprog != NULL && vim_regexec(&regmatch, s, 0)) {
if (sort_rx) {
start_col = (colnr_T)(regmatch.startp[0] - s);
end_col = (colnr_T)(regmatch.endp[0] - s);
} else {
start_col = (colnr_T)(regmatch.endp[0] - s);
}
} else if (regmatch.regprog != NULL) {
end_col = 0;
}
if (sort_nr || sort_flt) {
// Make sure vim_str2nr() doesn't read any digits past the end
// of the match, by temporarily terminating the string there
char *s2 = s + end_col;
char c = *s2; // temporary character storage
*s2 = NUL;
// Sorting on number: Store the number itself.
char *p = s + start_col;
if (sort_nr) {
if (sort_what & STR2NR_HEX) {
s = skiptohex(p);
} else if (sort_what & STR2NR_BIN) {
s = (char *)skiptobin(p);
} else {
s = skiptodigit(p);
}
if (s > p && s[-1] == '-') {
s--; // include preceding negative sign
}
if (*s == NUL) {
// line without number should sort before any number
nrs[lnum - eap->line1].st_u.num.is_number = false;
nrs[lnum - eap->line1].st_u.num.value = 0;
} else {
nrs[lnum - eap->line1].st_u.num.is_number = true;
vim_str2nr(s, NULL, NULL, sort_what,
&nrs[lnum - eap->line1].st_u.num.value, NULL, 0, false, NULL);
}
} else {
s = skipwhite(p);
if (*s == '+') {
s = skipwhite(s + 1);
}
if (*s == NUL) {
// empty line should sort before any number
nrs[lnum - eap->line1].st_u.value_flt = -DBL_MAX;
} else {
nrs[lnum - eap->line1].st_u.value_flt = strtod(s, NULL);
}
}
*s2 = c;
} else {
// Store the column to sort at.
nrs[lnum - eap->line1].st_u.line.start_col_nr = start_col;
nrs[lnum - eap->line1].st_u.line.end_col_nr = end_col;
}
nrs[lnum - eap->line1].lnum = lnum;
if (regmatch.regprog != NULL) {
fast_breakcheck();
}
if (got_int) {
goto sortend;
}
}
// Allocate a buffer that can hold the longest line.
sortbuf1 = xmalloc((size_t)maxlen + 1);
sortbuf2 = xmalloc((size_t)maxlen + 1);
// Sort the array of line numbers. Note: can't be interrupted!
qsort((void *)nrs, count, sizeof(sorti_T), sort_compare);
if (sort_abort) {
goto sortend;
}
bcount_t old_count = 0;
bcount_t new_count = 0;
// Insert the lines in the sorted order below the last one.
linenr_T lnum = eap->line2;
for (i = 0; i < count; i++) {
const linenr_T get_lnum = nrs[eap->forceit ? count - i - 1 : i].lnum;
// If the original line number of the line being placed is not the same
// as "lnum" (accounting for offset), we know that the buffer changed.
if (get_lnum + ((linenr_T)count - 1) != lnum) {
change_occurred = true;
}
char *s = ml_get(get_lnum);
colnr_T bytelen = ml_get_len(get_lnum) + 1; // include EOL in bytelen
old_count += bytelen;
if (!unique || i == 0 || string_compare(s, sortbuf1) != 0) {
// Copy the line into a buffer, it may become invalid in
// ml_append(). And it's needed for "unique".
STRCPY(sortbuf1, s);
if (ml_append(lnum++, sortbuf1, 0, false) == FAIL) {
break;
}
new_count += bytelen;
}
fast_breakcheck();
if (got_int) {
goto sortend;
}
}
// delete the original lines if appending worked
if (i == count) {
for (i = 0; i < count; i++) {
ml_delete(eap->line1, false);
}
} else {
count = 0;
}
// Adjust marks for deleted (or added) lines and prepare for displaying.
linenr_T deleted = (linenr_T)count - (lnum - eap->line2);
if (deleted > 0) {
mark_adjust(eap->line2 - deleted, eap->line2, MAXLNUM, -deleted, kExtmarkNOOP);
msgmore(-deleted);
} else if (deleted < 0) {
mark_adjust(eap->line2, MAXLNUM, -deleted, 0, kExtmarkNOOP);
}
if (change_occurred || deleted != 0) {
extmark_splice(curbuf, eap->line1 - 1, 0,
(int)count, 0, old_count,
lnum - eap->line2, 0, new_count, kExtmarkUndo);
changed_lines(curbuf, eap->line1, 0, eap->line2 + 1, -deleted, true);
}
curwin->w_cursor.lnum = eap->line1;
beginline(BL_WHITE | BL_FIX);
sortend:
xfree(nrs);
xfree(sortbuf1);
xfree(sortbuf2);
vim_regfree(regmatch.regprog);
if (got_int) {
emsg(_(e_interr));
}
}
/// :move command - move lines line1-line2 to line dest
///
/// @return FAIL for failure, OK otherwise
int do_move(linenr_T line1, linenr_T line2, linenr_T dest)
{
if (dest >= line1 && dest < line2) {
emsg(_("E134: Cannot move a range of lines into itself"));
return FAIL;
}
// Do nothing if we are not actually moving any lines. This will prevent
// the 'modified' flag from being set without cause.
if (dest == line1 - 1 || dest == line2) {
// Move the cursor as if lines were moved (see below) to be backwards
// compatible.
curwin->w_cursor.lnum = dest >= line1
? dest
: dest + (line2 - line1) + 1;
return OK;
}
bcount_t start_byte = ml_find_line_or_offset(curbuf, line1, NULL, true);
bcount_t end_byte = ml_find_line_or_offset(curbuf, line2 + 1, NULL, true);
bcount_t extent_byte = end_byte - start_byte;
bcount_t dest_byte = ml_find_line_or_offset(curbuf, dest + 1, NULL, true);
linenr_T num_lines = line2 - line1 + 1; // Num lines moved
// First we copy the old text to its new location -- webb
// Also copy the flag that ":global" command uses.
if (u_save(dest, dest + 1) == FAIL) {
return FAIL;
}
linenr_T l;
linenr_T extra; // Num lines added before line1
for (extra = 0, l = line1; l <= line2; l++) {
char *str = xstrnsave(ml_get(l + extra), (size_t)ml_get_len(l + extra));
ml_append(dest + l - line1, str, 0, false);
xfree(str);
if (dest < line1) {
extra++;
}
}
// Now we must be careful adjusting our marks so that we don't overlap our
// mark_adjust() calls.
//
// We adjust the marks within the old text so that they refer to the
// last lines of the file (temporarily), because we know no other marks
// will be set there since these line numbers did not exist until we added
// our new lines.
//
// Then we adjust the marks on lines between the old and new text positions
// (either forwards or backwards).
//
// And Finally we adjust the marks we put at the end of the file back to
// their final destination at the new text position -- webb
linenr_T last_line = curbuf->b_ml.ml_line_count; // Last line in file after adding new text
mark_adjust_nofold(line1, line2, last_line - line2, 0, kExtmarkNOOP);
disable_fold_update++;
changed_lines(curbuf, last_line - num_lines + 1, 0, last_line + 1, num_lines, false);
disable_fold_update--;
int line_off = 0;
bcount_t byte_off = 0;
if (dest >= line2) {
mark_adjust_nofold(line2 + 1, dest, -num_lines, 0, kExtmarkNOOP);
FOR_ALL_TAB_WINDOWS(tab, win) {
if (win->w_buffer == curbuf) {
foldMoveRange(win, &win->w_folds, line1, line2, dest);
}
}
if ((cmdmod.cmod_flags & CMOD_LOCKMARKS) == 0) {
curbuf->b_op_start.lnum = dest - num_lines + 1;
curbuf->b_op_end.lnum = dest;
}
line_off = -num_lines;
byte_off = -extent_byte;
} else {
mark_adjust_nofold(dest + 1, line1 - 1, num_lines, 0, kExtmarkNOOP);
FOR_ALL_TAB_WINDOWS(tab, win) {
if (win->w_buffer == curbuf) {
foldMoveRange(win, &win->w_folds, dest + 1, line1 - 1, line2);
}
}
if ((cmdmod.cmod_flags & CMOD_LOCKMARKS) == 0) {
curbuf->b_op_start.lnum = dest + 1;
curbuf->b_op_end.lnum = dest + num_lines;
}
}
if ((cmdmod.cmod_flags & CMOD_LOCKMARKS) == 0) {
curbuf->b_op_start.col = curbuf->b_op_end.col = 0;
}
mark_adjust_nofold(last_line - num_lines + 1, last_line,
-(last_line - dest - extra), 0, kExtmarkNOOP);
disable_fold_update++;
changed_lines(curbuf, last_line - num_lines + 1, 0, last_line + 1, -extra, false);
disable_fold_update--;
// send update regarding the new lines that were added
buf_updates_send_changes(curbuf, dest + 1, num_lines, 0);
// Now we delete the original text -- webb
if (u_save(line1 + extra - 1, line2 + extra + 1) == FAIL) {
return FAIL;
}
for (l = line1; l <= line2; l++) {
ml_delete(line1 + extra, true);
}
if (!global_busy && num_lines > p_report) {
smsg(0, NGETTEXT("%" PRId64 " line moved",
"%" PRId64 " lines moved", num_lines),
(int64_t)num_lines);
}
extmark_move_region(curbuf, line1 - 1, 0, start_byte,
line2 - line1 + 1, 0, extent_byte,
dest + line_off, 0, dest_byte + byte_off,
kExtmarkUndo);
// Leave the cursor on the last of the moved lines.
if (dest >= line1) {
curwin->w_cursor.lnum = dest;
} else {
curwin->w_cursor.lnum = dest + (line2 - line1) + 1;
}
if (line1 < dest) {
dest += num_lines + 1;
last_line = curbuf->b_ml.ml_line_count;
dest = MIN(dest, last_line + 1);
changed_lines(curbuf, line1, 0, dest, 0, false);
} else {
changed_lines(curbuf, dest + 1, 0, line1 + num_lines, 0, false);
}
// send nvim_buf_lines_event regarding lines that were deleted
buf_updates_send_changes(curbuf, line1 + extra, 0, num_lines);
return OK;
}
/// ":copy"
void ex_copy(linenr_T line1, linenr_T line2, linenr_T n)
{
linenr_T count = line2 - line1 + 1;
if ((cmdmod.cmod_flags & CMOD_LOCKMARKS) == 0) {
curbuf->b_op_start.lnum = n + 1;
curbuf->b_op_end.lnum = n + count;
curbuf->b_op_start.col = curbuf->b_op_end.col = 0;
}
// there are three situations:
// 1. destination is above line1
// 2. destination is between line1 and line2
// 3. destination is below line2
//
// n = destination (when starting)
// curwin->w_cursor.lnum = destination (while copying)
// line1 = start of source (while copying)
// line2 = end of source (while copying)
if (u_save(n, n + 1) == FAIL) {
return;
}
curwin->w_cursor.lnum = n;
while (line1 <= line2) {
// need to make a copy because the line will be unlocked within ml_append()
char *p = xstrnsave(ml_get(line1), (size_t)ml_get_len(line1));
ml_append(curwin->w_cursor.lnum, p, 0, false);
xfree(p);
// situation 2: skip already copied lines
if (line1 == n) {
line1 = curwin->w_cursor.lnum;
}
line1++;
if (curwin->w_cursor.lnum < line1) {
line1++;
}
if (curwin->w_cursor.lnum < line2) {
line2++;
}
curwin->w_cursor.lnum++;
}
appended_lines_mark(n, count);
if (VIsual_active) {
check_pos(curbuf, &VIsual);
}
msgmore(count);
}
static char *prevcmd = NULL; // the previous command
#if defined(EXITFREE)
void free_prev_shellcmd(void)
{
xfree(prevcmd);
}
#endif
/// Check that "prevcmd" is not NULL. If it is NULL then give an error message
/// and return false.
static int prevcmd_is_set(void)
{
if (prevcmd == NULL) {
emsg(_(e_noprev));
return false;
}
return true;
}
/// Handle the ":!cmd" command. Also for ":r !cmd" and ":w !cmd"
/// Bangs in the argument are replaced with the previously entered command.
/// Remember the argument.
void do_bang(int addr_count, exarg_T *eap, bool forceit, bool do_in, bool do_out)
FUNC_ATTR_NONNULL_ALL
{
char *arg = eap->arg; // command
linenr_T line1 = eap->line1; // start of range
linenr_T line2 = eap->line2; // end of range
char *newcmd = NULL; // the new command
bool free_newcmd = false; // need to free() newcmd
int scroll_save = msg_scroll;
// Disallow shell commands in secure mode
if (check_secure()) {
return;
}
if (addr_count == 0) { // :!
msg_scroll = false; // don't scroll here
autowrite_all();
msg_scroll = scroll_save;
}
// Try to find an embedded bang, like in ":!<cmd> ! [args]"
// ":!!" is indicated by the 'forceit' variable.
bool ins_prevcmd = forceit;
// Skip leading white space to avoid a strange error with some shells.
char *trailarg = skipwhite(arg);
do {
size_t len = strlen(trailarg) + 1;
if (newcmd != NULL) {
len += strlen(newcmd);
}
if (ins_prevcmd) {
if (!prevcmd_is_set()) {
xfree(newcmd);
return;
}
len += strlen(prevcmd);
}
char *t = xmalloc(len);
*t = NUL;
if (newcmd != NULL) {
strcat(t, newcmd);
}
if (ins_prevcmd) {
strcat(t, prevcmd);
}
char *p = t + strlen(t);
strcat(t, trailarg);
xfree(newcmd);
newcmd = t;
// Scan the rest of the argument for '!', which is replaced by the
// previous command. "\!" is replaced by "!" (this is vi compatible).
trailarg = NULL;
while (*p) {
if (*p == '!') {
if (p > newcmd && p[-1] == '\\') {
STRMOVE(p - 1, p);
} else {
trailarg = p;
*trailarg++ = NUL;
ins_prevcmd = true;
break;
}
}
p++;
}
} while (trailarg != NULL);
// Only set "prevcmd" if there is a command to run, otherwise keep te one
// we have.
if (strlen(newcmd) > 0) {
xfree(prevcmd);
prevcmd = newcmd;
} else {
free_newcmd = true;
}
if (bangredo) { // put cmd in redo buffer for ! command
if (!prevcmd_is_set()) {
goto theend;
}
// If % or # appears in the command, it must have been escaped.
// Reescape them, so that redoing them does not substitute them by the
// buffername.
char *cmd = vim_strsave_escaped(prevcmd, "%#");
AppendToRedobuffLit(cmd, -1);
xfree(cmd);
AppendToRedobuff("\n");
bangredo = false;
}
// Add quotes around the command, for shells that need them.
if (*p_shq != NUL) {
if (free_newcmd) {
xfree(newcmd);
}
newcmd = xmalloc(strlen(prevcmd) + 2 * strlen(p_shq) + 1);
STRCPY(newcmd, p_shq);
strcat(newcmd, prevcmd);
strcat(newcmd, p_shq);
free_newcmd = true;
}
if (addr_count == 0) { // :!
// echo the command
msg_start();
msg_putchar(':');
msg_putchar('!');
msg_outtrans(newcmd, 0, false);
msg_clr_eos();
ui_cursor_goto(msg_row, msg_col);
do_shell(newcmd, 0);
} else { // :range!
// Careful: This may recursively call do_bang() again! (because of
// autocommands)
do_filter(line1, line2, eap, newcmd, do_in, do_out);
apply_autocmds(EVENT_SHELLFILTERPOST, NULL, NULL, false, curbuf);
}
theend:
if (free_newcmd) {
xfree(newcmd);
}
}
/// do_filter: filter lines through a command given by the user
///
/// We mostly use temp files and the call_shell() routine here. This would
/// normally be done using pipes on a Unix system, but this is more portable
/// to non-Unix systems. The call_shell() routine needs to be able
/// to deal with redirection somehow, and should handle things like looking
/// at the PATH env. variable, and adding reasonable extensions to the
/// command name given by the user. All reasonable versions of call_shell()
/// do this.
/// Alternatively, if on Unix and redirecting input or output, but not both,
/// and the 'shelltemp' option isn't set, use pipes.
/// We use input redirection if do_in is true.
/// We use output redirection if do_out is true.
///
/// @param eap for forced 'ff' and 'fenc'
static void do_filter(linenr_T line1, linenr_T line2, exarg_T *eap, char *cmd, bool do_in,
bool do_out)
{
char *itmp = NULL;
char *otmp = NULL;
buf_T *old_curbuf = curbuf;
int shell_flags = 0;
const pos_T orig_start = curbuf->b_op_start;
const pos_T orig_end = curbuf->b_op_end;
const int stmp = p_stmp;
if (*cmd == NUL) { // no filter command
return;
}
const int save_cmod_flags = cmdmod.cmod_flags;
// Temporarily disable lockmarks since that's needed to propagate changed
// regions of the buffer for foldUpdate(), linecount, etc.
cmdmod.cmod_flags &= ~CMOD_LOCKMARKS;
pos_T cursor_save = curwin->w_cursor;
linenr_T linecount = line2 - line1 + 1;
curwin->w_cursor.lnum = line1;
curwin->w_cursor.col = 0;
changed_line_abv_curs();
invalidate_botline(curwin);
// When using temp files:
// 1. * Form temp file names
// 2. * Write the lines to a temp file
// 3. Run the filter command on the temp file
// 4. * Read the output of the command into the buffer
// 5. * Delete the original lines to be filtered
// 6. * Remove the temp files
//
// When writing the input with a pipe or when catching the output with a
// pipe only need to do 3.
if (do_out) {
shell_flags |= kShellOptDoOut;
}
if (!do_in && do_out && !stmp) {
// Use a pipe to fetch stdout of the command, do not use a temp file.
shell_flags |= kShellOptRead;
curwin->w_cursor.lnum = line2;
} else if (do_in && !do_out && !stmp) {
// Use a pipe to write stdin of the command, do not use a temp file.
shell_flags |= kShellOptWrite;
curbuf->b_op_start.lnum = line1;
curbuf->b_op_end.lnum = line2;
} else if (do_in && do_out && !stmp) {
// Use a pipe to write stdin and fetch stdout of the command, do not
// use a temp file.
shell_flags |= kShellOptRead | kShellOptWrite;
curbuf->b_op_start.lnum = line1;
curbuf->b_op_end.lnum = line2;
curwin->w_cursor.lnum = line2;
} else if ((do_in && (itmp = vim_tempname()) == NULL)
|| (do_out && (otmp = vim_tempname()) == NULL)) {
emsg(_(e_notmp));
goto filterend;
}
// The writing and reading of temp files will not be shown.
// Vi also doesn't do this and the messages are not very informative.
no_wait_return++; // don't call wait_return() while busy
if (itmp != NULL && buf_write(curbuf, itmp, NULL, line1, line2, eap,
false, false, false, true) == FAIL) {
msg_putchar('\n'); // Keep message from buf_write().
no_wait_return--;
if (!aborting()) {
// will call wait_return()
semsg(_("E482: Can't create file %s"), itmp);
}
goto filterend;
}
if (curbuf != old_curbuf) {
goto filterend;
}
if (!do_out) {
msg_putchar('\n');
}
// Create the shell command in allocated memory.
char *cmd_buf = make_filter_cmd(cmd, itmp, otmp);
ui_cursor_goto(Rows - 1, 0);
if (do_out) {
if (u_save(line2, (linenr_T)(line2 + 1)) == FAIL) {
xfree(cmd_buf);
goto error;
}
redraw_curbuf_later(UPD_VALID);
}
linenr_T read_linecount = curbuf->b_ml.ml_line_count;
// Pass on the kShellOptDoOut flag when the output is being redirected.
call_shell(cmd_buf, kShellOptFilter | shell_flags, NULL);
xfree(cmd_buf);
did_check_timestamps = false;
need_check_timestamps = true;
// When interrupting the shell command, it may still have produced some
// useful output. Reset got_int here, so that readfile() won't cancel
// reading.
os_breakcheck();
got_int = false;
if (do_out) {
if (otmp != NULL) {
if (readfile(otmp, NULL, line2, 0, (linenr_T)MAXLNUM, eap,
READ_FILTER, false) != OK) {
if (!aborting()) {
msg_putchar('\n');
semsg(_(e_notread), otmp);
}
goto error;
}
if (curbuf != old_curbuf) {
goto filterend;
}
}
read_linecount = curbuf->b_ml.ml_line_count - read_linecount;
if (shell_flags & kShellOptRead) {
curbuf->b_op_start.lnum = line2 + 1;
curbuf->b_op_end.lnum = curwin->w_cursor.lnum;
appended_lines_mark(line2, read_linecount);
}
if (do_in) {
if ((cmdmod.cmod_flags & CMOD_KEEPMARKS)
|| vim_strchr(p_cpo, CPO_REMMARK) == NULL) {
// TODO(bfredl): Currently not active for extmarks. What would we
// do if columns don't match, assume added/deleted bytes at the
// end of each line?
if (read_linecount >= linecount) {
// move all marks from old lines to new lines
mark_adjust(line1, line2, linecount, 0, kExtmarkNOOP);
} else {
// move marks from old lines to new lines, delete marks
// that are in deleted lines
mark_adjust(line1, line1 + read_linecount - 1, linecount, 0,
kExtmarkNOOP);
mark_adjust(line1 + read_linecount, line2, MAXLNUM, 0,
kExtmarkNOOP);
}
}
// Put cursor on first filtered line for ":range!cmd".
// Adjust '[ and '] (set by buf_write()).
curwin->w_cursor.lnum = line1;
del_lines(linecount, true);
curbuf->b_op_start.lnum -= linecount; // adjust '[
curbuf->b_op_end.lnum -= linecount; // adjust ']
write_lnum_adjust(-linecount); // adjust last line
// for next write
foldUpdate(curwin, curbuf->b_op_start.lnum, curbuf->b_op_end.lnum);
} else {
// Put cursor on last new line for ":r !cmd".
linecount = curbuf->b_op_end.lnum - curbuf->b_op_start.lnum + 1;
curwin->w_cursor.lnum = curbuf->b_op_end.lnum;
}
beginline(BL_WHITE | BL_FIX); // cursor on first non-blank
no_wait_return--;
if (linecount > p_report) {
if (do_in) {
vim_snprintf(msg_buf, sizeof(msg_buf),
_("%" PRId64 " lines filtered"), (int64_t)linecount);
if (msg(msg_buf, 0) && !msg_scroll) {
// save message to display it after redraw
set_keep_msg(msg_buf, 0);
}
} else {
msgmore(linecount);
}
}
} else {
error:
// put cursor back in same position for ":w !cmd"
curwin->w_cursor = cursor_save;
no_wait_return--;
wait_return(false);
}
filterend:
cmdmod.cmod_flags = save_cmod_flags;
if (curbuf != old_curbuf) {
no_wait_return--;
emsg(_("E135: *Filter* Autocommands must not change current buffer"));
} else if (cmdmod.cmod_flags & CMOD_LOCKMARKS) {
curbuf->b_op_start = orig_start;
curbuf->b_op_end = orig_end;
}
if (itmp != NULL) {
os_remove(itmp);
}
if (otmp != NULL) {
os_remove(otmp);
}
xfree(itmp);
xfree(otmp);
}
/// Call a shell to execute a command.
/// When "cmd" is NULL start an interactive shell.
///
/// @param flags may be SHELL_DOOUT when output is redirected
void do_shell(char *cmd, int flags)
{
// Disallow shell commands in secure mode
if (check_secure()) {
msg_end();
return;
}
// For autocommands we want to get the output on the current screen, to
// avoid having to type return below.
msg_putchar('\r'); // put cursor at start of line
msg_putchar('\n'); // may shift screen one line up
// warning message before calling the shell
if (p_warn
&& !autocmd_busy
&& msg_silent == 0) {
FOR_ALL_BUFFERS(buf) {
if (bufIsChanged(buf)) {
msg_puts(_("[No write since last change]\n"));
break;
}
}
}
// This ui_cursor_goto is required for when the '\n' resulted in a "delete line
// 1" command to the terminal.
ui_cursor_goto(msg_row, msg_col);
call_shell(cmd, flags, NULL);
if (msg_silent == 0) {
msg_didout = true;
}
did_check_timestamps = false;
need_check_timestamps = true;
// put the message cursor at the end of the screen, avoids wait_return()
// to overwrite the text that the external command showed
msg_row = Rows - 1;
msg_col = 0;
apply_autocmds(EVENT_SHELLCMDPOST, NULL, NULL, false, curbuf);
}
#if !defined(UNIX)
static char *find_pipe(const char *cmd)
{
bool inquote = false;
for (const char *p = cmd; *p != NUL; p++) {
if (!inquote && *p == '|') {
return (char *)p;
}
if (*p == '"') {
inquote = !inquote;
} else if (rem_backslash(p)) {
p++;
}
}
return NULL;
}
#endif
/// Create a shell command from a command string, input redirection file and
/// output redirection file.
///
/// @param cmd Command to execute.
/// @param itmp NULL or the input file.
/// @param otmp NULL or the output file.
/// @returns an allocated string with the shell command.
char *make_filter_cmd(char *cmd, char *itmp, char *otmp)
{
bool is_fish_shell =
#if defined(UNIX)
strncmp(invocation_path_tail(p_sh, NULL), "fish", 4) == 0;
#else
false;
#endif
bool is_pwsh = strncmp(invocation_path_tail(p_sh, NULL), "pwsh", 4) == 0
|| strncmp(invocation_path_tail(p_sh, NULL), "powershell",
10) == 0;
size_t len = strlen(cmd) + 1; // At least enough space for cmd + NULL.
len += is_fish_shell ? sizeof("begin; " "; end") - 1
: !is_pwsh ? sizeof("(" ")") - 1
: 0;
if (itmp != NULL) {
len += is_pwsh ? strlen(itmp) + sizeof("& { Get-Content " " | & " " }") - 1 + 6 // +6: #20530
: strlen(itmp) + sizeof(" { " " < " " } ") - 1;
}
if (otmp != NULL) {
len += strlen(otmp) + strlen(p_srr) + 2; // two extra spaces (" "),
}
char *const buf = xmalloc(len);
if (is_pwsh) {
if (itmp != NULL) {
xstrlcpy(buf, "& { Get-Content ", len - 1); // FIXME: should we add "-Encoding utf8"?
xstrlcat(buf, itmp, len - 1);
xstrlcat(buf, " | & ", len - 1); // FIXME: add `&` ourself or leave to user?
xstrlcat(buf, cmd, len - 1);
xstrlcat(buf, " }", len - 1);
} else {
xstrlcpy(buf, cmd, len - 1);
}
} else {
#if defined(UNIX)
// Put delimiters around the command (for concatenated commands) when
// redirecting input and/or output.
if (itmp != NULL || otmp != NULL) {
char *fmt = is_fish_shell ? "begin; %s; end"
: "(%s)";
vim_snprintf(buf, len, fmt, cmd);
} else {
xstrlcpy(buf, cmd, len);
}
if (itmp != NULL) {
xstrlcat(buf, " < ", len - 1);
xstrlcat(buf, itmp, len - 1);
}
#else
// For shells that don't understand braces around commands, at least allow
// the use of commands in a pipe.
xstrlcpy(buf, cmd, len);
if (itmp != NULL) {
// If there is a pipe, we have to put the '<' in front of it.
// Don't do this when 'shellquote' is not empty, otherwise the
// redirection would be inside the quotes.
if (*p_shq == NUL) {
char *const p = find_pipe(buf);
if (p != NULL) {
*p = NUL;
}
}
xstrlcat(buf, " < ", len);
xstrlcat(buf, itmp, len);
if (*p_shq == NUL) {
const char *const p = find_pipe(cmd);
if (p != NULL) {
xstrlcat(buf, " ", len - 1); // Insert a space before the '|' for DOS
xstrlcat(buf, p, len - 1);
}
}
}
#endif
}
if (otmp != NULL) {
append_redir(buf, len, p_srr, otmp);
}
return buf;
}
/// Append output redirection for the given file to the end of the buffer
///
/// @param[out] buf Buffer to append to.
/// @param[in] buflen Buffer length.
/// @param[in] opt Separator or format string to append: will append
/// `printf(' ' . opt, fname)` if `%s` is found in `opt` or
/// a space, opt, a space and then fname if `%s` is not found
/// there.
/// @param[in] fname File name to append.
void append_redir(char *const buf, const size_t buflen, const char *const opt,
const char *const fname)
{
char *const end = buf + strlen(buf);
// find "%s"
const char *p = opt;
for (; (p = strchr(p, '%')) != NULL; p++) {
if (p[1] == 's') { // found %s
break;
} else if (p[1] == '%') { // skip %%
p++;
}
}
if (p != NULL) {
*end = ' '; // not really needed? Not with sh, ksh or bash
vim_snprintf(end + 1, (size_t)((ptrdiff_t)buflen - (end + 1 - buf)), opt, fname);
} else {
vim_snprintf(end, (size_t)((ptrdiff_t)buflen - (end - buf)), " %s %s", opt, fname);
}
}
void print_line_no_prefix(linenr_T lnum, int use_number, bool list)
{
char numbuf[30];
if (curwin->w_p_nu || use_number) {
vim_snprintf(numbuf, sizeof(numbuf), "%*" PRIdLINENR " ",
number_width(curwin), lnum);
msg_puts_hl(numbuf, HLF_N + 1, false); // Highlight line nrs.
}
msg_prt_line(ml_get(lnum), list);
}
/// Print a text line. Also in silent mode ("ex -s").
void print_line(linenr_T lnum, int use_number, bool list)
{
bool save_silent = silent_mode;
// apply :filter /pat/
if (message_filtered(ml_get(lnum))) {
return;
}
msg_start();
silent_mode = false;
info_message = true; // use stdout, not stderr
print_line_no_prefix(lnum, use_number, list);
if (save_silent) {
msg_putchar('\n');
silent_mode = save_silent;
}
info_message = false;
}
int rename_buffer(char *new_fname)
{
buf_T *buf = curbuf;
apply_autocmds(EVENT_BUFFILEPRE, NULL, NULL, false, curbuf);
// buffer changed, don't change name now
if (buf != curbuf) {
return FAIL;
}
if (aborting()) { // autocmds may abort script processing
return FAIL;
}
// The name of the current buffer will be changed.
// A new (unlisted) buffer entry needs to be made to hold the old file
// name, which will become the alternate file name.
// But don't set the alternate file name if the buffer didn't have a
// name.
char *fname = curbuf->b_ffname;
char *sfname = curbuf->b_sfname;
char *xfname = curbuf->b_fname;
curbuf->b_ffname = NULL;
curbuf->b_sfname = NULL;
if (setfname(curbuf, new_fname, NULL, true) == FAIL) {
curbuf->b_ffname = fname;
curbuf->b_sfname = sfname;
return FAIL;
}
curbuf->b_flags |= BF_NOTEDITED;
if (xfname != NULL && *xfname != NUL) {
buf = buflist_new(fname, xfname, curwin->w_cursor.lnum, 0);
if (buf != NULL && (cmdmod.cmod_flags & CMOD_KEEPALT) == 0) {
curwin->w_alt_fnum = buf->b_fnum;
}
}
xfree(fname);
xfree(sfname);
apply_autocmds(EVENT_BUFFILEPOST, NULL, NULL, false, curbuf);
// Change directories when the 'acd' option is set.
do_autochdir();
return OK;
}
/// ":file[!] [fname]".
void ex_file(exarg_T *eap)
{
// ":0file" removes the file name. Check for illegal uses ":3file",
// "0file name", etc.
if (eap->addr_count > 0
&& (*eap->arg != NUL
|| eap->line2 > 0
|| eap->addr_count > 1)) {
emsg(_(e_invarg));
return;
}
if (*eap->arg != NUL || eap->addr_count == 1) {
if (rename_buffer(eap->arg) == FAIL) {
return;
}
redraw_tabline = true;
}
// print file name if no argument or 'F' is not in 'shortmess'
if (*eap->arg == NUL || !shortmess(SHM_FILEINFO)) {
fileinfo(false, false, eap->forceit);
}
}
/// ":update".
void ex_update(exarg_T *eap)
{
if (curbufIsChanged()) {
do_write(eap);
}
}
/// ":write" and ":saveas".
void ex_write(exarg_T *eap)
{
if (eap->cmdidx == CMD_saveas) {
// :saveas does not take a range, uses all lines.
eap->line1 = 1;
eap->line2 = curbuf->b_ml.ml_line_count;
}
if (eap->usefilter) { // input lines to shell command
do_bang(1, eap, false, true, false);
} else {
do_write(eap);
}
}
#ifdef UNIX
static int check_writable(const char *fname)
{
if (os_nodetype(fname) == NODE_OTHER) {
semsg(_("E503: \"%s\" is not a file or writable device"), fname);
return FAIL;
}
return OK;
}
#endif
/// Write current buffer to file "eap->arg".
/// If "eap->append" is true, append to the file.
///
/// If "*eap->arg == NUL" write to current file.
///
/// @return FAIL for failure, OK otherwise.
int do_write(exarg_T *eap)
{
bool other;
char *fname = NULL; // init to shut up gcc
int retval = FAIL;
char *free_fname = NULL;
buf_T *alt_buf = NULL;
if (not_writing()) { // check 'write' option
return FAIL;
}
char *ffname = eap->arg;
if (*ffname == NUL) {
if (eap->cmdidx == CMD_saveas) {
emsg(_(e_argreq));
goto theend;
}
other = false;
} else {
fname = ffname;
free_fname = fix_fname(ffname);
// When out-of-memory, keep unexpanded file name, because we MUST be
// able to write the file in this situation.
if (free_fname != NULL) {
ffname = free_fname;
}
other = otherfile(ffname);
}
// If we have a new file, put its name in the list of alternate file names.
if (other) {
if (vim_strchr(p_cpo, CPO_ALTWRITE) != NULL
|| eap->cmdidx == CMD_saveas) {
alt_buf = setaltfname(ffname, fname, 1);
} else {
alt_buf = buflist_findname(ffname);
}
if (alt_buf != NULL && alt_buf->b_ml.ml_mfp != NULL) {
// Overwriting a file that is loaded in another buffer is not a
// good idea.
emsg(_(e_bufloaded));
goto theend;
}
}
// Writing to the current file is not allowed in readonly mode
// and a file name is required.
// "nofile" and "nowrite" buffers cannot be written implicitly either.
if (!other && (bt_dontwrite_msg(curbuf)
|| check_fname() == FAIL
#ifdef UNIX
|| check_writable(curbuf->b_ffname) == FAIL
#endif
|| check_readonly(&eap->forceit, curbuf))) {
goto theend;
}
if (!other) {
ffname = curbuf->b_ffname;
fname = curbuf->b_fname;
// Not writing the whole file is only allowed with '!'.
if ((eap->line1 != 1
|| eap->line2 != curbuf->b_ml.ml_line_count)
&& !eap->forceit
&& !eap->append
&& !p_wa) {
if (p_confirm || (cmdmod.cmod_flags & CMOD_CONFIRM)) {
if (vim_dialog_yesno(VIM_QUESTION, NULL,
_("Write partial file?"), 2) != VIM_YES) {
goto theend;
}
eap->forceit = true;
} else {
emsg(_("E140: Use ! to write partial buffer"));
goto theend;
}
}
}
if (check_overwrite(eap, curbuf, fname, ffname, other) == OK) {
if (eap->cmdidx == CMD_saveas && alt_buf != NULL) {
buf_T *was_curbuf = curbuf;
apply_autocmds(EVENT_BUFFILEPRE, NULL, NULL, false, curbuf);
apply_autocmds(EVENT_BUFFILEPRE, NULL, NULL, false, alt_buf);
if (curbuf != was_curbuf || aborting()) {
// buffer changed, don't change name now
retval = FAIL;
goto theend;
}
// Exchange the file names for the current and the alternate
// buffer. This makes it look like we are now editing the buffer
// under the new name. Must be done before buf_write(), because
// if there is no file name and 'cpo' contains 'F', it will set
// the file name.
fname = alt_buf->b_fname;
alt_buf->b_fname = curbuf->b_fname;
curbuf->b_fname = fname;
fname = alt_buf->b_ffname;
alt_buf->b_ffname = curbuf->b_ffname;
curbuf->b_ffname = fname;
fname = alt_buf->b_sfname;
alt_buf->b_sfname = curbuf->b_sfname;
curbuf->b_sfname = fname;
buf_name_changed(curbuf);
apply_autocmds(EVENT_BUFFILEPOST, NULL, NULL, false, curbuf);
apply_autocmds(EVENT_BUFFILEPOST, NULL, NULL, false, alt_buf);
if (!alt_buf->b_p_bl) {
alt_buf->b_p_bl = true;
apply_autocmds(EVENT_BUFADD, NULL, NULL, false, alt_buf);
}
if (curbuf != was_curbuf || aborting()) {
// buffer changed, don't write the file
retval = FAIL;
goto theend;
}
// If 'filetype' was empty try detecting it now.
if (*curbuf->b_p_ft == NUL) {
if (augroup_exists("filetypedetect")) {
do_doautocmd("filetypedetect BufRead", true, NULL);
}
do_modelines(0);
}
// Autocommands may have changed buffer names, esp. when
// 'autochdir' is set.
fname = curbuf->b_sfname;
}
if (eap->mkdir_p) {
if (os_file_mkdir(fname, 0755) < 0) {
retval = FAIL;
goto theend;
}
}
int name_was_missing = curbuf->b_ffname == NULL;
retval = buf_write(curbuf, ffname, fname, eap->line1, eap->line2,
eap, eap->append, eap->forceit, true, false);
// After ":saveas fname" reset 'readonly'.
if (eap->cmdidx == CMD_saveas) {
if (retval == OK) {
curbuf->b_p_ro = false;
redraw_tabline = true;
}
}
// Change directories when the 'acd' option is set and the file name
// got changed or set.
if (eap->cmdidx == CMD_saveas || name_was_missing) {
do_autochdir();
}
}
theend:
xfree(free_fname);
return retval;
}
/// Check if it is allowed to overwrite a file. If b_flags has BF_NOTEDITED,
/// BF_NEW or BF_READERR, check for overwriting current file.
/// May set eap->forceit if a dialog says it's OK to overwrite.
///
/// @param fname file name to be used (can differ from buf->ffname)
/// @param ffname full path version of fname
/// @param other writing under other name
///
/// @return OK if it's OK, FAIL if it is not.
int check_overwrite(exarg_T *eap, buf_T *buf, char *fname, char *ffname, bool other)
{
// Write to another file or b_flags set or not writing the whole file:
// overwriting only allowed with '!'
// If "other" is false and bt_nofilename(buf) is true, this must be
// writing an "acwrite" buffer to the same file as its b_ffname, and
// buf_write() will only allow writing with BufWriteCmd autocommands,
// so there is no need for an overwrite check.
if ((other
|| (!bt_nofilename(buf)
&& ((buf->b_flags & BF_NOTEDITED)
|| ((buf->b_flags & BF_NEW)
&& vim_strchr(p_cpo, CPO_OVERNEW) == NULL)
|| (buf->b_flags & BF_READERR))))
&& !p_wa
&& os_path_exists(ffname)) {
if (!eap->forceit && !eap->append) {
#ifdef UNIX
// It is possible to open a directory on Unix.
if (os_isdir(ffname)) {
semsg(_(e_isadir2), ffname);
return FAIL;
}
#endif
if (p_confirm || (cmdmod.cmod_flags & CMOD_CONFIRM)) {
char buff[DIALOG_MSG_SIZE];
dialog_msg(buff, _("Overwrite existing file \"%s\"?"), fname);
if (vim_dialog_yesno(VIM_QUESTION, NULL, buff, 2) != VIM_YES) {
return FAIL;
}
eap->forceit = true;
} else {
emsg(_(e_exists));
return FAIL;
}
}
// For ":w! filename" check that no swap file exists for "filename".
if (other && !emsg_silent) {
char *dir;
// We only try the first entry in 'directory', without checking if
// it's writable. If the "." directory is not writable the write
// will probably fail anyway.
// Use 'shortname' of the current buffer, since there is no buffer
// for the written file.
if (*p_dir == NUL) {
dir = xmalloc(5);
STRCPY(dir, ".");
} else {
dir = xmalloc(MAXPATHL);
char *p = p_dir;
copy_option_part(&p, dir, MAXPATHL, ",");
}
char *swapname = makeswapname(fname, ffname, curbuf, dir);
xfree(dir);
if (os_path_exists(swapname)) {
if (p_confirm || (cmdmod.cmod_flags & CMOD_CONFIRM)) {
char buff[DIALOG_MSG_SIZE];
dialog_msg(buff,
_("Swap file \"%s\" exists, overwrite anyway?"),
swapname);
if (vim_dialog_yesno(VIM_QUESTION, NULL, buff, 2)
!= VIM_YES) {
xfree(swapname);
return FAIL;
}
eap->forceit = true;
} else {
semsg(_("E768: Swap file exists: %s (:silent! overrides)"),
swapname);
xfree(swapname);
return FAIL;
}
}
xfree(swapname);
}
}
return OK;
}
/// Handle ":wnext", ":wNext" and ":wprevious" commands.
void ex_wnext(exarg_T *eap)
{
int i;
if (eap->cmd[1] == 'n') {
i = curwin->w_arg_idx + (int)eap->line2;
} else {
i = curwin->w_arg_idx - (int)eap->line2;
}
eap->line1 = 1;
eap->line2 = curbuf->b_ml.ml_line_count;
if (do_write(eap) != FAIL) {
do_argfile(eap, i);
}
}
/// ":wall", ":wqall" and ":xall": Write all changed files (and exit).
void do_wqall(exarg_T *eap)
{
int error = 0;
int save_forceit = eap->forceit;
if (eap->cmdidx == CMD_xall || eap->cmdidx == CMD_wqall) {
if (before_quit_all(eap) == FAIL) {
return;
}
exiting = true;
}
FOR_ALL_BUFFERS(buf) {
if (exiting
&& buf->terminal
&& channel_job_running((uint64_t)buf->b_p_channel)) {
no_write_message_nobang(buf);
error++;
} else if (!bufIsChanged(buf) || bt_dontwrite(buf)) {
continue;
}
// Check if there is a reason the buffer cannot be written:
// 1. if the 'write' option is set
// 2. if there is no file name (even after browsing)
// 3. if the 'readonly' is set (even after a dialog)
// 4. if overwriting is allowed (even after a dialog)
if (not_writing()) {
error++;
break;
}
if (buf->b_ffname == NULL) {
semsg(_("E141: No file name for buffer %" PRId64), (int64_t)buf->b_fnum);
error++;
} else if (check_readonly(&eap->forceit, buf)
|| check_overwrite(eap, buf, buf->b_fname, buf->b_ffname, false) == FAIL) {
error++;
} else {
bufref_T bufref;
set_bufref(&bufref, buf);
if (buf_write_all(buf, eap->forceit) == FAIL) {
error++;
}
// An autocommand may have deleted the buffer.
if (!bufref_valid(&bufref)) {
buf = firstbuf;
}
}
eap->forceit = save_forceit; // check_overwrite() may set it
}
if (exiting) {
if (!error) {
getout(0); // exit Vim
}
not_exiting();
}
}
/// Check the 'write' option.
///
/// @return true and give a message when it's not st.
bool not_writing(void)
{
if (p_write) {
return false;
}
emsg(_("E142: File not written: Writing is disabled by 'write' option"));
return true;
}
/// Check if a buffer is read-only (either 'readonly' option is set or file is
/// read-only). Ask for overruling in a dialog. Return true and give an error
/// message when the buffer is readonly.
static int check_readonly(int *forceit, buf_T *buf)
{
// Handle a file being readonly when the 'readonly' option is set or when
// the file exists and permissions are read-only.
if (!*forceit && (buf->b_p_ro
|| (os_path_exists(buf->b_ffname)
&& !os_file_is_writable(buf->b_ffname)))) {
if ((p_confirm || (cmdmod.cmod_flags & CMOD_CONFIRM)) && buf->b_fname != NULL) {
char buff[DIALOG_MSG_SIZE];
if (buf->b_p_ro) {
dialog_msg(buff,
_("'readonly' option is set for \"%s\".\nDo you wish to write anyway?"),
buf->b_fname);
} else {
dialog_msg(buff,
_("File permissions of \"%s\" are read-only.\nIt may still be possible to "
"write it.\nDo you wish to try?"),
buf->b_fname);
}
if (vim_dialog_yesno(VIM_QUESTION, NULL, buff, 2) == VIM_YES) {
// Set forceit, to force the writing of a readonly file
*forceit = true;
return false;
}
return true;
} else if (buf->b_p_ro) {
emsg(_(e_readonly));
} else {
semsg(_("E505: \"%s\" is read-only (add ! to override)"),
buf->b_fname);
}
return true;
}
return false;
}
/// Try to abandon the current file and edit a new or existing file.
///
/// @param fnum the number of the file, if zero use "ffname_arg"/"sfname_arg".
/// @param lnum the line number for the cursor in the new file (if non-zero).
///
/// @return:
/// GETFILE_ERROR for "normal" error,
/// GETFILE_NOT_WRITTEN for "not written" error,
/// GETFILE_SAME_FILE for success
/// GETFILE_OPEN_OTHER for successfully opening another file.
int getfile(int fnum, char *ffname_arg, char *sfname_arg, bool setpm, linenr_T lnum, bool forceit)
{
if (!check_can_set_curbuf_forceit(forceit)) {
return GETFILE_ERROR;
}
char *ffname = ffname_arg;
char *sfname = sfname_arg;
bool other;
int retval;
char *free_me = NULL;
if (text_locked()) {
return GETFILE_ERROR;
}
if (curbuf_locked()) {
return GETFILE_ERROR;
}
if (fnum == 0) {
// make ffname full path, set sfname
fname_expand(curbuf, &ffname, &sfname);
other = otherfile(ffname);
free_me = ffname; // has been allocated, free() later
} else {
other = (fnum != curbuf->b_fnum);
}
if (other) {
no_wait_return++; // don't wait for autowrite message
}
if (other && !forceit && curbuf->b_nwindows == 1 && !buf_hide(curbuf)
&& curbufIsChanged() && autowrite(curbuf, forceit) == FAIL) {
if (p_confirm && p_write) {
dialog_changed(curbuf, false);
}
if (curbufIsChanged()) {
no_wait_return--;
no_write_message();
retval = GETFILE_NOT_WRITTEN; // File has been changed.
goto theend;
}
}
if (other) {
no_wait_return--;
}
if (setpm) {
setpcmark();
}
if (!other) {
if (lnum != 0) {
curwin->w_cursor.lnum = lnum;
}
check_cursor_lnum(curwin);
beginline(BL_SOL | BL_FIX);
retval = GETFILE_SAME_FILE; // it's in the same file
} else if (do_ecmd(fnum, ffname, sfname, NULL, lnum,
(buf_hide(curbuf) ? ECMD_HIDE : 0)
+ (forceit ? ECMD_FORCEIT : 0), curwin) == OK) {
retval = GETFILE_OPEN_OTHER; // opened another file
} else {
retval = GETFILE_ERROR; // error encountered
}
theend:
xfree(free_me);
return retval;
}
/// set v:swapcommand for the SwapExists autocommands.
///
/// @param command [+cmd] to be executed (e.g. +10).
/// @param newlnum if > 0: put cursor on this line number (if possible)
//
/// @return 1 if swapcommand was actually set, 0 otherwise
bool set_swapcommand(char *command, linenr_T newlnum)
{
if ((command == NULL && newlnum <= 0) || *get_vim_var_str(VV_SWAPCOMMAND) != NUL) {
return false;
}
const size_t len = (command != NULL) ? strlen(command) + 3 : 30;
char *const p = xmalloc(len);
if (command != NULL) {
vim_snprintf(p, len, ":%s\r", command);
} else {
vim_snprintf(p, len, "%" PRId64 "G", (int64_t)newlnum);
}
set_vim_var_string(VV_SWAPCOMMAND, p, -1);
xfree(p);
return true;
}
/// start editing a new file
///
/// @param fnum file number; if zero use ffname/sfname
/// @param ffname the file name
/// - full path if sfname used,
/// - any file name if sfname is NULL
/// - empty string to re-edit with the same file name (but may
/// be in a different directory)
/// - NULL to start an empty buffer
/// @param sfname the short file name (or NULL)
/// @param eap contains the command to be executed after loading the file
/// and forced 'ff' and 'fenc'. Can be NULL!
/// @param newlnum if > 0: put cursor on this line number (if possible)
/// ECMD_LASTL: use last position in loaded file
/// ECMD_LAST: use last position in all files
/// ECMD_ONE: use first line
/// @param flags ECMD_HIDE: if true don't free the current buffer
/// ECMD_SET_HELP: set b_help flag of (new) buffer before
/// opening file
/// ECMD_OLDBUF: use existing buffer if it exists
/// ECMD_FORCEIT: ! used for Ex command
/// ECMD_ADDBUF: don't edit, just add to buffer list
/// ECMD_ALTBUF: like ECMD_ADDBUF and also set the alternate
/// file
/// ECMD_NOWINENTER: Do not trigger BufWinEnter
/// @param oldwin Should be "curwin" when editing a new buffer in the current
/// window, NULL when splitting the window first. When not NULL
/// info of the previous buffer for "oldwin" is stored.
///
/// @return FAIL for failure, OK otherwise
int do_ecmd(int fnum, char *ffname, char *sfname, exarg_T *eap, linenr_T newlnum, int flags,
win_T *oldwin)
{
bool other_file; // true if editing another file
int oldbuf; // true if using existing buffer
bool auto_buf = false; // true if autocommands brought us
// into the buffer unexpectedly
char *new_name = NULL;
bool did_set_swapcommand = false;
buf_T *buf;
bufref_T bufref;
bufref_T old_curbuf;
char *free_fname = NULL;
int retval = FAIL;
linenr_T topline = 0;
int newcol = -1;
int solcol = -1;
char *command = NULL;
bool did_get_winopts = false;
int readfile_flags = 0;
bool did_inc_redrawing_disabled = false;
OptInt *so_ptr = curwin->w_p_so >= 0 ? &curwin->w_p_so : &p_so;
if (eap != NULL) {
command = eap->do_ecmd_cmd;
}
set_bufref(&old_curbuf, curbuf);
if (fnum != 0) {
if (fnum == curbuf->b_fnum) { // file is already being edited
return OK; // nothing to do
}
other_file = true;
} else {
// if no short name given, use ffname for short name
if (sfname == NULL) {
sfname = ffname;
}
#ifdef CASE_INSENSITIVE_FILENAME
if (sfname != NULL) {
path_fix_case(sfname); // set correct case for sfname
}
#endif
if ((flags & (ECMD_ADDBUF | ECMD_ALTBUF))
&& (ffname == NULL || *ffname == NUL)) {
goto theend;
}
if (ffname == NULL) {
other_file = true;
} else if (*ffname == NUL && curbuf->b_ffname == NULL) { // there is no file name
other_file = false;
} else {
if (*ffname == NUL) { // re-edit with same file name
ffname = curbuf->b_ffname;
sfname = curbuf->b_fname;
}
free_fname = fix_fname(ffname); // may expand to full path name
if (free_fname != NULL) {
ffname = free_fname;
}
other_file = otherfile(ffname);
}
}
// Re-editing a terminal buffer: skip most buffer re-initialization.
if (!other_file && curbuf->terminal) {
check_arg_idx(curwin); // Needed when called from do_argfile().
maketitle(); // Title may show the arg index, e.g. "(2 of 5)".
retval = OK;
goto theend;
}
// If the file was changed we may not be allowed to abandon it:
// - if we are going to re-edit the same file
// - or if we are the only window on this file and if ECMD_HIDE is false
if (((!other_file && !(flags & ECMD_OLDBUF))
|| (curbuf->b_nwindows == 1
&& !(flags & (ECMD_HIDE | ECMD_ADDBUF | ECMD_ALTBUF))))
&& check_changed(curbuf, (p_awa ? CCGD_AW : 0)
| (other_file ? 0 : CCGD_MULTWIN)
| ((flags & ECMD_FORCEIT) ? CCGD_FORCEIT : 0)
| (eap == NULL ? 0 : CCGD_EXCMD))) {
if (fnum == 0 && other_file && ffname != NULL) {
setaltfname(ffname, sfname, newlnum < 0 ? 0 : newlnum);
}
goto theend;
}
// End Visual mode before switching to another buffer, so the text can be
// copied into the GUI selection buffer.
// Careful: may trigger ModeChanged() autocommand
// Should we block autocommands here?
reset_VIsual();
// autocommands freed window :(
if (oldwin != NULL && !win_valid(oldwin)) {
oldwin = NULL;
}
did_set_swapcommand = set_swapcommand(command, newlnum);
// If we are starting to edit another file, open a (new) buffer.
// Otherwise we re-use the current buffer.
if (other_file) {
const int prev_alt_fnum = curwin->w_alt_fnum;
if (!(flags & (ECMD_ADDBUF | ECMD_ALTBUF))) {
if ((cmdmod.cmod_flags & CMOD_KEEPALT) == 0) {
curwin->w_alt_fnum = curbuf->b_fnum;
}
if (oldwin != NULL) {
buflist_altfpos(oldwin);
}
}
if (fnum) {
buf = buflist_findnr(fnum);
} else {
if (flags & (ECMD_ADDBUF | ECMD_ALTBUF)) {
// Default the line number to zero to avoid that a wininfo item
// is added for the current window.
linenr_T tlnum = 0;
if (command != NULL) {
tlnum = (linenr_T)atol(command);
if (tlnum <= 0) {
tlnum = 1;
}
}
// Add BLN_NOCURWIN to avoid a new wininfo items are associated
// with the current window.
const buf_T *const newbuf
= buflist_new(ffname, sfname, tlnum, BLN_LISTED | BLN_NOCURWIN);
if (newbuf != NULL && (flags & ECMD_ALTBUF)) {
curwin->w_alt_fnum = newbuf->b_fnum;
}
goto theend;
}
buf = buflist_new(ffname, sfname, 0,
BLN_CURBUF | (flags & ECMD_SET_HELP ? 0 : BLN_LISTED));
// Autocmds may change curwin and curbuf.
if (oldwin != NULL) {
oldwin = curwin;
}
set_bufref(&old_curbuf, curbuf);
}
if (buf == NULL) {
goto theend;
}
// autocommands try to edit a closing buffer, which like splitting, can
// result in more windows displaying it; abort
if (buf->b_locked_split) {
// window was split, but not editing the new buffer, reset b_nwindows again
if (oldwin == NULL
&& curwin->w_buffer != NULL
&& curwin->w_buffer->b_nwindows > 1) {
curwin->w_buffer->b_nwindows--;
}
emsg(_(e_cannot_switch_to_a_closing_buffer));
goto theend;
}
if (curwin->w_alt_fnum == buf->b_fnum && prev_alt_fnum != 0) {
// reusing the buffer, keep the old alternate file
curwin->w_alt_fnum = prev_alt_fnum;
}
if (buf->b_ml.ml_mfp == NULL) {
// No memfile yet.
oldbuf = false;
} else {
// Existing memfile.
oldbuf = true;
set_bufref(&bufref, buf);
buf_check_timestamp(buf);
// Check if autocommands made buffer invalid or changed the current
// buffer.
if (!bufref_valid(&bufref) || curbuf != old_curbuf.br_buf) {
goto theend;
}
if (aborting()) {
// Autocmds may abort script processing.
goto theend;
}
}
// May jump to last used line number for a loaded buffer or when asked
// for explicitly
if ((oldbuf && newlnum == ECMD_LASTL) || newlnum == ECMD_LAST) {
pos_T *pos = &buflist_findfmark(buf)->mark;
newlnum = pos->lnum;
solcol = pos->col;
}
// Make the (new) buffer the one used by the current window.
// If the old buffer becomes unused, free it if ECMD_HIDE is false.
// If the current buffer was empty and has no file name, curbuf
// is returned by buflist_new(), nothing to do here.
if (buf != curbuf) {
// Should only be possible to get here if the cmdwin is closed, or
// if it's opening and its buffer hasn't been set yet (the new
// buffer is for it).
assert(cmdwin_buf == NULL);
const int save_cmdwin_type = cmdwin_type;
win_T *const save_cmdwin_win = cmdwin_win;
win_T *const save_cmdwin_old_curwin = cmdwin_old_curwin;
// BufLeave applies to the old buffer.
cmdwin_type = 0;
cmdwin_win = NULL;
cmdwin_old_curwin = NULL;
// Be careful: The autocommands may delete any buffer and change
// the current buffer.
// - If the buffer we are going to edit is deleted, give up.
// - If the current buffer is deleted, prefer to load the new
// buffer when loading a buffer is required. This avoids
// loading another buffer which then must be closed again.
// - If we ended up in the new buffer already, need to skip a few
// things, set auto_buf.
if (buf->b_fname != NULL) {
new_name = xstrdup(buf->b_fname);
}
const bufref_T save_au_new_curbuf = au_new_curbuf;
set_bufref(&au_new_curbuf, buf);
apply_autocmds(EVENT_BUFLEAVE, NULL, NULL, false, curbuf);
cmdwin_type = save_cmdwin_type;
cmdwin_win = save_cmdwin_win;
cmdwin_old_curwin = save_cmdwin_old_curwin;
if (!bufref_valid(&au_new_curbuf)) {
// New buffer has been deleted.
delbuf_msg(new_name); // Frees new_name.
au_new_curbuf = save_au_new_curbuf;
goto theend;
}
if (aborting()) { // autocmds may abort script processing
xfree(new_name);
au_new_curbuf = save_au_new_curbuf;
goto theend;
}
if (buf == curbuf) { // already in new buffer
auto_buf = true;
} else {
win_T *the_curwin = curwin;
buf_T *was_curbuf = curbuf;
// Set w_locked to avoid that autocommands close the window.
// Set b_locked for the same reason.
the_curwin->w_locked = true;
buf->b_locked++;
if (curbuf == old_curbuf.br_buf) {
buf_copy_options(buf, BCO_ENTER);
}
// Close the link to the current buffer. This will set
// oldwin->w_buffer to NULL.
u_sync(false);
const bool did_decrement
= close_buffer(oldwin, curbuf, (flags & ECMD_HIDE) || curbuf->terminal ? 0 : DOBUF_UNLOAD,
false, false);
// Autocommands may have closed the window.
if (win_valid(the_curwin)) {
the_curwin->w_locked = false;
}
buf->b_locked--;
// autocmds may abort script processing
if (aborting() && curwin->w_buffer != NULL) {
xfree(new_name);
au_new_curbuf = save_au_new_curbuf;
goto theend;
}
// Be careful again, like above.
if (!bufref_valid(&au_new_curbuf)) {
// New buffer has been deleted.
delbuf_msg(new_name); // Frees new_name.
au_new_curbuf = save_au_new_curbuf;
goto theend;
}
if (buf == curbuf) { // already in new buffer
// close_buffer() has decremented the window count,
// increment it again here and restore w_buffer.
if (did_decrement && buf_valid(was_curbuf)) {
was_curbuf->b_nwindows++;
}
if (win_valid_any_tab(oldwin) && oldwin->w_buffer == NULL) {
oldwin->w_buffer = was_curbuf;
}
auto_buf = true;
} else {
// <VN> We could instead free the synblock
// and re-attach to buffer, perhaps.
if (curwin->w_buffer == NULL
|| curwin->w_s == &(curwin->w_buffer->b_s)) {
curwin->w_s = &(buf->b_s);
}
curwin->w_buffer = buf;
curbuf = buf;
curbuf->b_nwindows++;
// Set 'fileformat', 'binary' and 'fenc' when forced.
if (!oldbuf && eap != NULL) {
set_file_options(true, eap);
set_forced_fenc(eap);
}
}
// May get the window options from the last time this buffer
// was in this window (or another window). If not used
// before, reset the local window options to the global
// values. Also restores old folding stuff.
get_winopts(curbuf);
did_get_winopts = true;
}
xfree(new_name);
au_new_curbuf = save_au_new_curbuf;
}
curwin->w_pcmark.lnum = 1;
curwin->w_pcmark.col = 0;
} else { // !other_file
if ((flags & (ECMD_ADDBUF | ECMD_ALTBUF)) || check_fname() == FAIL) {
goto theend;
}
oldbuf = (flags & ECMD_OLDBUF);
}
// Don't redraw until the cursor is in the right line, otherwise
// autocommands may cause ml_get errors.
RedrawingDisabled++;
did_inc_redrawing_disabled = true;
buf = curbuf;
if ((flags & ECMD_SET_HELP) || keep_help_flag) {
prepare_help_buffer();
} else if (!curbuf->b_help) {
// Don't make a buffer listed if it's a help buffer. Useful when using
// CTRL-O to go back to a help file.
set_buflisted(true);
}
// If autocommands change buffers under our fingers, forget about
// editing the file.
if (buf != curbuf) {
goto theend;
}
if (aborting()) { // autocmds may abort script processing
goto theend;
}
// Since we are starting to edit a file, consider the filetype to be
// unset. Helps for when an autocommand changes files and expects syntax
// highlighting to work in the other file.
curbuf->b_did_filetype = false;
// other_file oldbuf
// false false re-edit same file, buffer is re-used
// false true re-edit same file, nothing changes
// true false start editing new file, new buffer
// true true start editing in existing buffer (nothing to do)
if (!other_file && !oldbuf) { // re-use the buffer
set_last_cursor(curwin); // may set b_last_cursor
if (newlnum == ECMD_LAST || newlnum == ECMD_LASTL) {
newlnum = curwin->w_cursor.lnum;
solcol = curwin->w_cursor.col;
}
buf = curbuf;
if (buf->b_fname != NULL) {
new_name = xstrdup(buf->b_fname);
} else {
new_name = NULL;
}
set_bufref(&bufref, buf);
// If the buffer was used before, store the current contents so that
// the reload can be undone. Do not do this if the (empty) buffer is
// being re-used for another file.
if (!(curbuf->b_flags & BF_NEVERLOADED)
&& (p_ur < 0 || curbuf->b_ml.ml_line_count <= p_ur)) {
// Sync first so that this is a separate undo-able action.
u_sync(false);
if (u_savecommon(curbuf, 0, curbuf->b_ml.ml_line_count + 1, 0, true)
== FAIL) {
xfree(new_name);
goto theend;
}
u_unchanged(curbuf);
buf_updates_unload(curbuf, false);
buf_freeall(curbuf, BFA_KEEP_UNDO);
// Tell readfile() not to clear or reload undo info.
readfile_flags = READ_KEEP_UNDO;
} else {
buf_updates_unload(curbuf, false);
buf_freeall(curbuf, 0); // Free all things for buffer.
}
// If autocommands deleted the buffer we were going to re-edit, give
// up and jump to the end.
if (!bufref_valid(&bufref)) {
delbuf_msg(new_name); // Frees new_name.
goto theend;
}
xfree(new_name);
// If autocommands change buffers under our fingers, forget about
// re-editing the file. Should do the buf_clear_file(), but perhaps
// the autocommands changed the buffer...
if (buf != curbuf) {
goto theend;
}
if (aborting()) { // autocmds may abort script processing
goto theend;
}
buf_clear_file(curbuf);
curbuf->b_op_start.lnum = 0; // clear '[ and '] marks
curbuf->b_op_end.lnum = 0;
}
// If we get here we are sure to start editing
// Assume success now
retval = OK;
// If the file name was changed, reset the not-edit flag so that ":write"
// works.
if (!other_file) {
curbuf->b_flags &= ~BF_NOTEDITED;
}
// Check if we are editing the w_arg_idx file in the argument list.
check_arg_idx(curwin);
if (!auto_buf) {
// Set cursor and init window before reading the file and executing
// autocommands. This allows for the autocommands to position the
// cursor.
curwin_init();
// It's possible that all lines in the buffer changed. Need to update
// automatic folding for all windows where it's used.
FOR_ALL_TAB_WINDOWS(tp, win) {
if (win->w_buffer == curbuf) {
foldUpdateAll(win);
}
}
// Change directories when the 'acd' option is set.
do_autochdir();
// Careful: open_buffer() and apply_autocmds() may change the current
// buffer and window.
pos_T orig_pos = curwin->w_cursor;
topline = curwin->w_topline;
if (!oldbuf) { // need to read the file
swap_exists_action = SEA_DIALOG;
curbuf->b_flags |= BF_CHECK_RO; // set/reset 'ro' flag
// Open the buffer and read the file.
if (flags & ECMD_NOWINENTER) {
readfile_flags |= READ_NOWINENTER;
}
if (should_abort(open_buffer(false, eap, readfile_flags))) {
retval = FAIL;
}
if (swap_exists_action == SEA_QUIT) {
retval = FAIL;
}
handle_swap_exists(&old_curbuf);
} else {
// Read the modelines, but only to set window-local options. Any
// buffer-local options have already been set and may have been
// changed by the user.
do_modelines(OPT_WINONLY);
apply_autocmds_retval(EVENT_BUFENTER, NULL, NULL, false, curbuf,
&retval);
if ((flags & ECMD_NOWINENTER) == 0) {
apply_autocmds_retval(EVENT_BUFWINENTER, NULL, NULL, false, curbuf,
&retval);
}
}
check_arg_idx(curwin);
// If autocommands change the cursor position or topline, we should
// keep it. Also when it moves within a line. But not when it moves
// to the first non-blank.
if (!equalpos(curwin->w_cursor, orig_pos)) {
const char *text = get_cursor_line_ptr();
if (curwin->w_cursor.lnum != orig_pos.lnum
|| curwin->w_cursor.col != (int)(skipwhite(text) - text)) {
newlnum = curwin->w_cursor.lnum;
newcol = curwin->w_cursor.col;
}
}
if (curwin->w_topline == topline) {
topline = 0;
}
// Even when cursor didn't move we need to recompute topline.
changed_line_abv_curs();
maketitle();
}
// Tell the diff stuff that this buffer is new and/or needs updating.
// Also needed when re-editing the same buffer, because unloading will
// have removed it as a diff buffer.
if (curwin->w_p_diff) {
diff_buf_add(curbuf);
diff_invalidate(curbuf);
}
// If the window options were changed may need to set the spell language.
// Can only do this after the buffer has been properly setup.
if (did_get_winopts && curwin->w_p_spell && *curwin->w_s->b_p_spl != NUL) {
parse_spelllang(curwin);
}
if (command == NULL) {
if (newcol >= 0) { // position set by autocommands
curwin->w_cursor.lnum = newlnum;
curwin->w_cursor.col = newcol;
check_cursor(curwin);
} else if (newlnum > 0) { // line number from caller or old position
curwin->w_cursor.lnum = newlnum;
check_cursor_lnum(curwin);
if (solcol >= 0 && !p_sol) {
// 'sol' is off: Use last known column.
curwin->w_cursor.col = solcol;
check_cursor_col(curwin);
curwin->w_cursor.coladd = 0;
curwin->w_set_curswant = true;
} else {
beginline(BL_SOL | BL_FIX);
}
} else { // no line number, go to last line in Ex mode
if (exmode_active) {
curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
}
beginline(BL_WHITE | BL_FIX);
}
}
// Check if cursors in other windows on the same buffer are still valid
check_lnums(false);
// Did not read the file, need to show some info about the file.
// Do this after setting the cursor.
if (oldbuf
&& !auto_buf) {
int msg_scroll_save = msg_scroll;
// Obey the 'O' flag in 'cpoptions': overwrite any previous file
// message.
if (shortmess(SHM_OVERALL) && !msg_listdo_overwrite && !exiting && p_verbose == 0) {
msg_scroll = false;
}
if (!msg_scroll) { // wait a bit when overwriting an error msg
msg_check_for_delay(false);
}
msg_start();
msg_scroll = msg_scroll_save;
msg_scrolled_ign = true;
if (!shortmess(SHM_FILEINFO)) {
fileinfo(false, true, false);
}
msg_scrolled_ign = false;
}
curbuf->b_last_used = time(NULL);
if (command != NULL) {
do_cmdline(command, NULL, NULL, DOCMD_VERBOSE);
}
if (curbuf->b_kmap_state & KEYMAP_INIT) {
keymap_init();
}
RedrawingDisabled--;
did_inc_redrawing_disabled = false;
if (!skip_redraw) {
OptInt n = *so_ptr;
if (topline == 0 && command == NULL) {
*so_ptr = 999; // force cursor to be vertically centered in the window
}
update_topline(curwin);
curwin->w_scbind_pos = plines_m_win_fill(curwin, 1, curwin->w_topline);
*so_ptr = n;
redraw_curbuf_later(UPD_NOT_VALID); // redraw this buffer later
}
// Change directories when the 'acd' option is set.
do_autochdir();
theend:
if (bufref_valid(&old_curbuf) && old_curbuf.br_buf->terminal != NULL) {
terminal_check_size(old_curbuf.br_buf->terminal);
}
if ((!bufref_valid(&old_curbuf) || curbuf != old_curbuf.br_buf) && curbuf->terminal != NULL) {
terminal_check_size(curbuf->terminal);
}
if (did_inc_redrawing_disabled) {
RedrawingDisabled--;
}
if (did_set_swapcommand) {
set_vim_var_string(VV_SWAPCOMMAND, NULL, -1);
}
xfree(free_fname);
return retval;
}
static void delbuf_msg(char *name)
{
semsg(_("E143: Autocommands unexpectedly deleted new buffer %s"),
name == NULL ? "" : name);
xfree(name);
au_new_curbuf.br_buf = NULL;
au_new_curbuf.br_buf_free_count = 0;
}
static int append_indent = 0; // autoindent for first line
/// ":insert" and ":append", also used by ":change"
void ex_append(exarg_T *eap)
{
char *theline;
bool did_undo = false;
linenr_T lnum = eap->line2;
int indent = 0;
char *p;
bool empty = (curbuf->b_ml.ml_flags & ML_EMPTY);
// the ! flag toggles autoindent
if (eap->forceit) {
curbuf->b_p_ai = !curbuf->b_p_ai;
}
// First autoindent comes from the line we start on
if (eap->cmdidx != CMD_change && curbuf->b_p_ai && lnum > 0) {
append_indent = get_indent_lnum(lnum);
}
if (eap->cmdidx != CMD_append) {
lnum--;
}
// when the buffer is empty need to delete the dummy line
if (empty && lnum == 1) {
lnum = 0;
}
State = MODE_INSERT; // behave like in Insert mode
if (curbuf->b_p_iminsert == B_IMODE_LMAP) {
State |= MODE_LANGMAP;
}
while (true) {
msg_scroll = true;
need_wait_return = false;
if (curbuf->b_p_ai) {
if (append_indent >= 0) {
indent = append_indent;
append_indent = -1;
} else if (lnum > 0) {
indent = get_indent_lnum(lnum);
}
}
if (*eap->arg == '|') {
// Get the text after the trailing bar.
theline = xstrdup(eap->arg + 1);
*eap->arg = NUL;
} else if (eap->ea_getline == NULL) {
// No getline() function, use the lines that follow. This ends
// when there is no more.
if (eap->nextcmd == NULL) {
break;
}
p = vim_strchr(eap->nextcmd, NL);
if (p == NULL) {
p = eap->nextcmd + strlen(eap->nextcmd);
}
theline = xmemdupz(eap->nextcmd, (size_t)(p - eap->nextcmd));
if (*p != NUL) {
p++;
} else {
p = NULL;
}
eap->nextcmd = p;
} else {
int save_State = State;
// Set State to avoid the cursor shape to be set to MODE_INSERT
// state when getline() returns.
State = MODE_CMDLINE;
theline = eap->ea_getline(eap->cstack->cs_looplevel > 0 ? -1 : NUL,
eap->cookie, indent, true);
State = save_State;
}
lines_left = Rows - 1;
if (theline == NULL) {
break;
}
// Look for the "." after automatic indent.
int vcol = 0;
for (p = theline; indent > vcol; p++) {
if (*p == ' ') {
vcol++;
} else if (*p == TAB) {
vcol += 8 - vcol % 8;
} else {
break;
}
}
if ((p[0] == '.' && p[1] == NUL)
|| (!did_undo && u_save(lnum, lnum + 1 + (empty ? 1 : 0))
== FAIL)) {
xfree(theline);
break;
}
// don't use autoindent if nothing was typed.
if (p[0] == NUL) {
theline[0] = NUL;
}
did_undo = true;
ml_append(lnum, theline, 0, false);
if (empty) {
// there are no marks below the inserted lines
appended_lines(lnum, 1);
} else {
appended_lines_mark(lnum, 1);
}
xfree(theline);
lnum++;
if (empty) {
ml_delete(2, false);
empty = false;
}
}
State = MODE_NORMAL;
if (eap->forceit) {
curbuf->b_p_ai = !curbuf->b_p_ai;
}
// "start" is set to eap->line2+1 unless that position is invalid (when
// eap->line2 pointed to the end of the buffer and nothing was appended)
// "end" is set to lnum when something has been appended, otherwise
// it is the same as "start" -- Acevedo
if ((cmdmod.cmod_flags & CMOD_LOCKMARKS) == 0) {
curbuf->b_op_start.lnum
= (eap->line2 < curbuf->b_ml.ml_line_count) ? eap->line2 + 1 : curbuf->b_ml.ml_line_count;
if (eap->cmdidx != CMD_append) {
curbuf->b_op_start.lnum--;
}
curbuf->b_op_end.lnum = (eap->line2 < lnum) ? lnum : curbuf->b_op_start.lnum;
curbuf->b_op_start.col = curbuf->b_op_end.col = 0;
}
curwin->w_cursor.lnum = lnum;
check_cursor_lnum(curwin);
beginline(BL_SOL | BL_FIX);
need_wait_return = false; // don't use wait_return() now
ex_no_reprint = true;
}
/// ":change"
void ex_change(exarg_T *eap)
{
linenr_T lnum;
if (eap->line2 >= eap->line1
&& u_save(eap->line1 - 1, eap->line2 + 1) == FAIL) {
return;
}
// the ! flag toggles autoindent
if (eap->forceit ? !curbuf->b_p_ai : curbuf->b_p_ai) {
append_indent = get_indent_lnum(eap->line1);
}
for (lnum = eap->line2; lnum >= eap->line1; lnum--) {
if (curbuf->b_ml.ml_flags & ML_EMPTY) { // nothing to delete
break;
}
ml_delete(eap->line1, false);
}
// make sure the cursor is not beyond the end of the file now
check_cursor_lnum(curwin);
deleted_lines_mark(eap->line1, (eap->line2 - lnum));
// ":append" on the line above the deleted lines.
eap->line2 = eap->line1;
ex_append(eap);
}
void ex_z(exarg_T *eap)
{
int64_t bigness;
int minus = 0;
linenr_T start, end, curs;
linenr_T lnum = eap->line2;
// Vi compatible: ":z!" uses display height, without a count uses
// 'scroll'
if (eap->forceit) {
bigness = Rows - 1;
} else if (ONE_WINDOW) {
bigness = curwin->w_p_scr * 2;
} else {
bigness = curwin->w_height_inner - 3;
}
bigness = MAX(bigness, 1);
char *x = eap->arg;
char *kind = x;
if (*kind == '-' || *kind == '+' || *kind == '='
|| *kind == '^' || *kind == '.') {
x++;
}
while (*x == '-' || *x == '+') {
x++;
}
if (*x != 0) {
if (!ascii_isdigit(*x)) {
emsg(_(e_non_numeric_argument_to_z));
return;
}
bigness = atol(x);
// bigness could be < 0 if atol(x) overflows.
if (bigness > 2 * curbuf->b_ml.ml_line_count || bigness < 0) {
bigness = 2 * curbuf->b_ml.ml_line_count;
}
p_window = (int)bigness;
if (*kind == '=') {
bigness += 2;
}
}
// the number of '-' and '+' multiplies the distance
if (*kind == '-' || *kind == '+') {
for (x = kind + 1; *x == *kind; x++) {}
}
switch (*kind) {
case '-':
start = lnum - (linenr_T)bigness * (linenr_T)(x - kind) + 1;
end = start + (linenr_T)bigness - 1;
curs = end;
break;
case '=':
start = lnum - ((linenr_T)bigness + 1) / 2 + 1;
end = lnum + ((linenr_T)bigness + 1) / 2 - 1;
curs = lnum;
minus = 1;
break;
case '^':
start = lnum - (linenr_T)bigness * 2;
end = lnum - (linenr_T)bigness;
curs = lnum - (linenr_T)bigness;
break;
case '.':
start = lnum - ((linenr_T)bigness + 1) / 2 + 1;
end = lnum + ((linenr_T)bigness + 1) / 2 - 1;
curs = end;
break;
default: // '+'
start = lnum;
if (*kind == '+') {
start += (linenr_T)bigness * (linenr_T)(x - kind - 1) + 1;
} else if (eap->addr_count == 0) {
start++;
}
end = start + (linenr_T)bigness - 1;
curs = end;
break;
}
start = MAX(start, 1);
end = MIN(end, curbuf->b_ml.ml_line_count);
curs = MIN(MAX(curs, 1), curbuf->b_ml.ml_line_count);
for (linenr_T i = start; i <= end; i++) {
if (minus && i == lnum) {
msg_putchar('\n');
for (int j = 1; j < Columns; j++) {
msg_putchar('-');
}
}
print_line(i, eap->flags & EXFLAG_NR, eap->flags & EXFLAG_LIST);
if (minus && i == lnum) {
msg_putchar('\n');
for (int j = 1; j < Columns; j++) {
msg_putchar('-');
}
}
}
if (curwin->w_cursor.lnum != curs) {
curwin->w_cursor.lnum = curs;
curwin->w_cursor.col = 0;
}
ex_no_reprint = true;
}
/// @return true if the secure flag is set and also give an error message.
/// Otherwise, return false.
bool check_secure(void)
{
if (secure) {
secure = 2;
emsg(_(e_curdir));
return true;
}
// In the sandbox more things are not allowed, including the things
// disallowed in secure mode.
if (sandbox != 0) {
emsg(_(e_sandbox));
return true;
}
return false;
}
/// Previous substitute replacement string
static SubReplacementString old_sub = { NULL, 0, NULL };
static int global_need_beginline; // call beginline() after ":g"
/// Get old substitute replacement string
///
/// @param[out] ret_sub Location where old string will be saved.
void sub_get_replacement(SubReplacementString *const ret_sub)
FUNC_ATTR_NONNULL_ALL
{
*ret_sub = old_sub;
}
/// Set substitute string and timestamp
///
/// @warning `sub` must be in allocated memory. It is not copied.
///
/// @param[in] sub New replacement string.
void sub_set_replacement(SubReplacementString sub)
{
xfree(old_sub.sub);
if (sub.additional_data != old_sub.additional_data) {
xfree(old_sub.additional_data);
}
old_sub = sub;
}
/// Recognize ":%s/\n//" and turn it into a join command, which is much
/// more efficient.
///
/// @param[in] eap Ex arguments
/// @param[in] pat Search pattern
/// @param[in] sub Replacement string
/// @param[in] cmd Command from :s_flags
/// @param[in] save Save pattern to options, history
///
/// @returns true if :substitute can be replaced with a join command
static bool sub_joining_lines(exarg_T *eap, char *pat, size_t patlen, const char *sub,
const char *cmd, bool save, bool keeppatterns)
FUNC_ATTR_NONNULL_ARG(1, 4, 5)
{
// TODO(vim): find a generic solution to make line-joining operations more
// efficient, avoid allocating a string that grows in size.
if (pat != NULL
&& strcmp(pat, "\\n") == 0
&& *sub == NUL
&& (*cmd == NUL || (cmd[1] == NUL
&& (*cmd == 'g'
|| *cmd == 'l'
|| *cmd == 'p'
|| *cmd == '#')))) {
if (eap->skip) {
return true;
}
curwin->w_cursor.lnum = eap->line1;
if (*cmd == 'l') {
eap->flags = EXFLAG_LIST;
} else if (*cmd == '#') {
eap->flags = EXFLAG_NR;
} else if (*cmd == 'p') {
eap->flags = EXFLAG_PRINT;
}
// The number of lines joined is the number of lines in the range
linenr_T joined_lines_count = eap->line2 - eap->line1 + 1
// plus one extra line if not at the end of file.
+ (eap->line2 < curbuf->b_ml.ml_line_count ? 1 : 0);
if (joined_lines_count > 1) {
do_join((size_t)joined_lines_count, false, true, false, true);
sub_nsubs = joined_lines_count - 1;
sub_nlines = 1;
do_sub_msg(false);
ex_may_print(eap);
}
if (save) {
if (!keeppatterns) {
save_re_pat(RE_SUBST, pat, patlen, magic_isset());
}
// put pattern in history
add_to_history(HIST_SEARCH, pat, patlen, true, NUL);
}
return true;
}
return false;
}
/// Allocate memory to store the replacement text for :substitute.
///
/// Slightly more memory that is strictly necessary is allocated to reduce the
/// frequency of memory (re)allocation.
///
/// @param[in,out] new_start pointer to the memory for the replacement text
/// @param[in,out] new_start_len pointer to length of new_start
/// @param[in] needed_len amount of memory needed
///
/// @returns pointer to the end of the allocated memory
static char *sub_grow_buf(char **new_start, int *new_start_len, int needed_len)
FUNC_ATTR_NONNULL_ALL FUNC_ATTR_NONNULL_RET
{
char *new_end;
if (*new_start == NULL) {
// Get some space for a temporary buffer to do the
// substitution into (and some extra space to avoid
// too many calls to xmalloc()/free()).
*new_start_len = needed_len + 50;
*new_start = xcalloc(1, (size_t)(*new_start_len));
**new_start = NUL;
new_end = *new_start;
} else {
// Check if the temporary buffer is long enough to do the
// substitution into. If not, make it larger (with a bit
// extra to avoid too many calls to xmalloc()/free()).
size_t len = strlen(*new_start);
needed_len += (int)len;
if (needed_len > *new_start_len) {
size_t prev_new_start_len = (size_t)(*new_start_len);
*new_start_len = needed_len + 50;
size_t added_len = (size_t)(*new_start_len) - prev_new_start_len;
*new_start = xrealloc(*new_start, (size_t)(*new_start_len));
memset(*new_start + prev_new_start_len, 0, added_len);
}
new_end = *new_start + len;
}
return new_end;
}
/// Parse cmd string for :substitute's {flags} and update subflags accordingly
///
/// @param[in] cmd command string
/// @param[in,out] subflags current flags defined for the :substitute command
/// @param[in,out] which_pat pattern type from which to get default search
///
/// @returns pointer to the end of the flags, which may be the end of the string
static char *sub_parse_flags(char *cmd, subflags_T *subflags, int *which_pat)
FUNC_ATTR_NONNULL_ALL FUNC_ATTR_NONNULL_RET
{
// Find trailing options. When '&' is used, keep old options.
if (*cmd == '&') {
cmd++;
} else {
subflags->do_all = p_gd;
subflags->do_ask = false;
subflags->do_error = true;
subflags->do_print = false;
subflags->do_list = false;
subflags->do_count = false;
subflags->do_number = false;
subflags->do_ic = kSubHonorOptions;
}
while (*cmd) {
// Note that 'g' and 'c' are always inverted.
// 'r' is never inverted.
if (*cmd == 'g') {
subflags->do_all = !subflags->do_all;
} else if (*cmd == 'c') {
subflags->do_ask = !subflags->do_ask;
} else if (*cmd == 'n') {
subflags->do_count = true;
} else if (*cmd == 'e') {
subflags->do_error = !subflags->do_error;
} else if (*cmd == 'r') { // use last used regexp
*which_pat = RE_LAST;
} else if (*cmd == 'p') {
subflags->do_print = true;
} else if (*cmd == '#') {
subflags->do_print = true;
subflags->do_number = true;
} else if (*cmd == 'l') {
subflags->do_print = true;
subflags->do_list = true;
} else if (*cmd == 'i') { // ignore case
subflags->do_ic = kSubIgnoreCase;
} else if (*cmd == 'I') { // don't ignore case
subflags->do_ic = kSubMatchCase;
} else {
break;
}
cmd++;
}
if (subflags->do_count) {
subflags->do_ask = false;
}
return cmd;
}
/// Skip over the "sub" part in :s/pat/sub/ where "delimiter" is the separating
/// character.
static char *skip_substitute(char *start, int delimiter)
{
char *p = start;
while (p[0]) {
if (p[0] == delimiter) { // end delimiter found
*p++ = NUL; // replace it with a NUL
break;
}
if (p[0] == '\\' && p[1] != 0) { // skip escaped characters
p++;
}
MB_PTR_ADV(p);
}
return p;
}
static int check_regexp_delim(int c)
FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT
{
if (isalpha(c)) {
emsg(_("E146: Regular expressions can't be delimited by letters"));
return FAIL;
}
return OK;
}
/// Perform a substitution from line eap->line1 to line eap->line2 using the
/// command pointed to by eap->arg which should be of the form:
///
/// /pattern/substitution/{flags}
///
/// The usual escapes are supported as described in the regexp docs.
///
/// @param cmdpreview_ns The namespace to show 'inccommand' preview highlights.
/// If <= 0, preview shouldn't be shown.
/// @return 0, 1 or 2. See cmdpreview_may_show() for more information on the meaning.
static int do_sub(exarg_T *eap, const proftime_T timeout, const int cmdpreview_ns,
const handle_T cmdpreview_bufnr)
{
#define ADJUST_SUB_FIRSTLNUM() \
do { \
/* For a multi-line match, make a copy of the last matched */ \
/* line and continue in that one. */ \
if (nmatch > 1) { \
sub_firstlnum += (linenr_T)nmatch - 1; \
xfree(sub_firstline); \
sub_firstline = xstrnsave(ml_get(sub_firstlnum), \
(size_t)ml_get_len(sub_firstlnum)); \
/* When going beyond the last line, stop substituting. */ \
if (sub_firstlnum <= line2) { \
do_again = true; \
} else { \
subflags.do_all = false; \
} \
} \
if (skip_match) { \
/* Already hit end of the buffer, sub_firstlnum is one */ \
/* less than what it ought to be. */ \
xfree(sub_firstline); \
sub_firstline = xstrdup(""); \
copycol = 0; \
} \
} while (0)
int i = 0;
regmmatch_T regmatch;
static subflags_T subflags = {
.do_all = false,
.do_ask = false,
.do_count = false,
.do_error = true,
.do_print = false,
.do_list = false,
.do_number = false,
.do_ic = kSubHonorOptions
};
char *pat = NULL;
char *sub = NULL; // init for GCC
size_t patlen = 0;
int delimiter;
bool has_second_delim = false;
int sublen;
bool got_quit = false;
bool got_match = false;
int which_pat;
char *cmd = eap->arg;
linenr_T first_line = 0; // first changed line
linenr_T last_line = 0; // below last changed line AFTER the change
linenr_T old_line_count = curbuf->b_ml.ml_line_count;
char *sub_firstline; // allocated copy of first sub line
bool endcolumn = false; // cursor in last column when done
const bool keeppatterns = cmdmod.cmod_flags & CMOD_KEEPPATTERNS;
PreviewLines preview_lines = { KV_INITIAL_VALUE, 0 };
static int pre_hl_id = 0;
pos_T old_cursor = curwin->w_cursor;
int start_nsubs;
bool did_save = false;
if (!global_busy) {
sub_nsubs = 0;
sub_nlines = 0;
}
start_nsubs = sub_nsubs;
if (eap->cmdidx == CMD_tilde) {
which_pat = RE_LAST; // use last used regexp
} else {
which_pat = RE_SUBST; // use last substitute regexp
}
// new pattern and substitution
if (eap->cmd[0] == 's' && *cmd != NUL && !ascii_iswhite(*cmd)
&& vim_strchr("0123456789cegriIp|\"", (uint8_t)(*cmd)) == NULL) {
// don't accept alphanumeric for separator
if (check_regexp_delim(*cmd) == FAIL) {
return 0;
}
// undocumented vi feature:
// "\/sub/" and "\?sub?" use last used search pattern (almost like
// //sub/r). "\&sub&" use last substitute pattern (like //sub/).
if (*cmd == '\\') {
cmd++;
if (vim_strchr("/?&", (uint8_t)(*cmd)) == NULL) {
emsg(_(e_backslash));
return 0;
}
if (*cmd != '&') {
which_pat = RE_SEARCH; // use last '/' pattern
}
pat = ""; // empty search pattern
patlen = 0;
delimiter = (uint8_t)(*cmd++); // remember delimiter character
has_second_delim = true;
} else { // find the end of the regexp
which_pat = RE_LAST; // use last used regexp
delimiter = (uint8_t)(*cmd++); // remember delimiter character
pat = cmd; // remember start of search pat
cmd = skip_regexp_ex(cmd, delimiter, magic_isset(), &eap->arg, NULL, NULL);
if (cmd[0] == delimiter) { // end delimiter found
*cmd++ = NUL; // replace it with a NUL
has_second_delim = true;
}
patlen = strlen(pat);
}
// Small incompatibility: vi sees '\n' as end of the command, but in
// Vim we want to use '\n' to find/substitute a NUL.
char *p = cmd; // remember the start of the substitution
cmd = skip_substitute(cmd, delimiter);
sub = xstrdup(p);
if (!eap->skip && !keeppatterns && cmdpreview_ns <= 0) {
sub_set_replacement((SubReplacementString) {
.sub = xstrdup(sub),
.timestamp = os_time(),
.additional_data = NULL,
});
}
} else if (!eap->skip) { // use previous pattern and substitution
if (old_sub.sub == NULL) { // there is no previous command
emsg(_(e_nopresub));
return 0;
}
pat = NULL; // search_regcomp() will use previous pattern
patlen = 0;
sub = xstrdup(old_sub.sub);
// Vi compatibility quirk: repeating with ":s" keeps the cursor in the
// last column after using "$".
endcolumn = (curwin->w_curswant == MAXCOL);
}
if (sub != NULL && sub_joining_lines(eap, pat, patlen, sub, cmd, cmdpreview_ns <= 0,
keeppatterns)) {
xfree(sub);
return 0;
}
cmd = sub_parse_flags(cmd, &subflags, &which_pat);
bool save_do_all = subflags.do_all; // remember user specified 'g' flag
bool save_do_ask = subflags.do_ask; // remember user specified 'c' flag
// check for a trailing count
cmd = skipwhite(cmd);
if (ascii_isdigit(*cmd)) {
i = getdigits_int(&cmd, true, INT_MAX);
if (i <= 0 && !eap->skip && subflags.do_error) {
emsg(_(e_zerocount));
xfree(sub);
return 0;
} else if (i >= INT_MAX) {
char buf[20];
vim_snprintf(buf, sizeof(buf), "%d", i);
semsg(_(e_val_too_large), buf);
xfree(sub);
return 0;
}
eap->line1 = eap->line2;
eap->line2 += (linenr_T)i - 1;
eap->line2 = MIN(eap->line2, curbuf->b_ml.ml_line_count);
}
// check for trailing command or garbage
cmd = skipwhite(cmd);
if (*cmd && *cmd != '"') { // if not end-of-line or comment
eap->nextcmd = check_nextcmd(cmd);
if (eap->nextcmd == NULL) {
semsg(_(e_trailing_arg), cmd);
xfree(sub);
return 0;
}
}
if (eap->skip) { // not executing commands, only parsing
xfree(sub);
return 0;
}
if (!subflags.do_count && !MODIFIABLE(curbuf)) {
// Substitution is not allowed in non-'modifiable' buffer
emsg(_(e_modifiable));
xfree(sub);
return 0;
}
if (search_regcomp(pat, patlen, NULL, RE_SUBST, which_pat,
(cmdpreview_ns > 0 ? 0 : SEARCH_HIS), &regmatch) == FAIL) {
if (subflags.do_error) {
emsg(_(e_invcmd));
}
xfree(sub);
return 0;
}
// the 'i' or 'I' flag overrules 'ignorecase' and 'smartcase'
if (subflags.do_ic == kSubIgnoreCase) {
regmatch.rmm_ic = true;
} else if (subflags.do_ic == kSubMatchCase) {
regmatch.rmm_ic = false;
}
sub_firstline = NULL;
assert(sub != NULL);
// If the substitute pattern starts with "\=" then it's an expression.
// Make a copy, a recursive function may free it.
// Otherwise, '~' in the substitute pattern is replaced with the old
// pattern. We do it here once to avoid it to be replaced over and over
// again.
if (sub[0] == '\\' && sub[1] == '=') {
char *p = xstrdup(sub);
xfree(sub);
sub = p;
} else {
char *p = regtilde(sub, magic_isset(), cmdpreview_ns > 0);
if (p != sub) {
xfree(sub);
sub = p;
}
}
// Check for a match on each line.
// If preview: limit to max('cmdwinheight', viewport).
linenr_T line2 = eap->line2;
for (linenr_T lnum = eap->line1;
lnum <= line2 && !got_quit && !aborting()
&& (cmdpreview_ns <= 0 || preview_lines.lines_needed <= (linenr_T)p_cwh
|| lnum <= curwin->w_botline);
lnum++) {
int nmatch = vim_regexec_multi(&regmatch, curwin, curbuf, lnum,
0, NULL, NULL);
if (nmatch) {
colnr_T copycol;
colnr_T matchcol;
colnr_T prev_matchcol = MAXCOL;
char *new_end;
char *new_start = NULL;
int new_start_len = 0;
char *p1;
bool did_sub = false;
int lastone;
linenr_T nmatch_tl = 0; // nr of lines matched below lnum
int do_again; // do it again after joining lines
bool skip_match = false;
linenr_T sub_firstlnum; // nr of first sub line
// The new text is build up step by step, to avoid too much
// copying. There are these pieces:
// sub_firstline The old text, unmodified.
// copycol Column in the old text where we started
// looking for a match; from here old text still
// needs to be copied to the new text.
// matchcol Column number of the old text where to look
// for the next match. It's just after the
// previous match or one further.
// prev_matchcol Column just after the previous match (if any).
// Mostly equal to matchcol, except for the first
// match and after skipping an empty match.
// regmatch.*pos Where the pattern matched in the old text.
// new_start The new text, all that has been produced so
// far.
// new_end The new text, where to append new text.
//
// lnum The line number where we found the start of
// the match. Can be below the line we searched
// when there is a \n before a \zs in the
// pattern.
// sub_firstlnum The line number in the buffer where to look
// for a match. Can be different from "lnum"
// when the pattern or substitute string contains
// line breaks.
//
// Special situations:
// - When the substitute string contains a line break, the part up
// to the line break is inserted in the text, but the copy of
// the original line is kept. "sub_firstlnum" is adjusted for
// the inserted lines.
// - When the matched pattern contains a line break, the old line
// is taken from the line at the end of the pattern. The lines
// in the match are deleted later, "sub_firstlnum" is adjusted
// accordingly.
//
// The new text is built up in new_start[]. It has some extra
// room to avoid using xmalloc()/free() too often. new_start_len is
// the length of the allocated memory at new_start.
//
// Make a copy of the old line, so it won't be taken away when
// updating the screen or handling a multi-line match. The "old_"
// pointers point into this copy.
sub_firstlnum = lnum;
copycol = 0;
matchcol = 0;
// At first match, remember current cursor position.
if (!got_match) {
setpcmark();
got_match = true;
}
// Loop until nothing more to replace in this line.
// 1. Handle match with empty string.
// 2. If subflags.do_ask is set, ask for confirmation.
// 3. substitute the string.
// 4. if subflags.do_all is set, find next match
// 5. break if there isn't another match in this line
while (true) {
SubResult current_match = {
.start = { 0, 0 },
.end = { 0, 0 },
.pre_match = 0,
};
// lnum is where the match start, but maybe not the pattern match,
// since we can have \n before \zs in the pattern
// Advance "lnum" to the line where the match starts. The
// match does not start in the first line when there is a line
// break before \zs.
if (regmatch.startpos[0].lnum > 0) {
current_match.pre_match = lnum;
lnum += regmatch.startpos[0].lnum;
sub_firstlnum += regmatch.startpos[0].lnum;
nmatch -= regmatch.startpos[0].lnum;
XFREE_CLEAR(sub_firstline);
}
// Now we're at the line where the pattern match starts
// Note: If not first match on a line, column can't be known here
current_match.start.lnum = sub_firstlnum;
// Match might be after the last line for "\n\zs" matching at
// the end of the last line.
if (lnum > curbuf->b_ml.ml_line_count) {
break;
}
if (sub_firstline == NULL) {
sub_firstline = xstrnsave(ml_get(sub_firstlnum),
(size_t)ml_get_len(sub_firstlnum));
}
// Save the line number of the last change for the final
// cursor position (just like Vi).
curwin->w_cursor.lnum = lnum;
do_again = false;
// 1. Match empty string does not count, except for first
// match. This reproduces the strange vi behaviour.
// This also catches endless loops.
if (matchcol == prev_matchcol
&& regmatch.endpos[0].lnum == 0
&& matchcol == regmatch.endpos[0].col) {
if (sub_firstline[matchcol] == NUL) {
// We already were at the end of the line. Don't look
// for a match in this line again.
skip_match = true;
} else {
// search for a match at next column
matchcol += utfc_ptr2len(sub_firstline + matchcol);
}
// match will be pushed to preview_lines, bring it into a proper state
current_match.start.col = matchcol;
current_match.end.lnum = sub_firstlnum;
current_match.end.col = matchcol;
goto skip;
}
// Normally we continue searching for a match just after the
// previous match.
matchcol = regmatch.endpos[0].col;
prev_matchcol = matchcol;
// 2. If subflags.do_count is set only increase the counter.
// If do_ask is set, ask for confirmation.
if (subflags.do_count) {
// For a multi-line match, put matchcol at the NUL at
// the end of the line and set nmatch to one, so that
// we continue looking for a match on the next line.
// Avoids that ":s/\nB\@=//gc" get stuck.
if (nmatch > 1) {
matchcol = (colnr_T)strlen(sub_firstline);
nmatch = 1;
skip_match = true;
}
sub_nsubs++;
did_sub = true;
// Skip the substitution, unless an expression is used,
// then it is evaluated in the sandbox.
if (!(sub[0] == '\\' && sub[1] == '=')) {
goto skip;
}
}
if (subflags.do_ask && cmdpreview_ns <= 0) {
int typed = 0;
// change State to MODE_CONFIRM, so that the mouse works
// properly
int save_State = State;
State = MODE_CONFIRM;
setmouse(); // disable mouse in xterm
curwin->w_cursor.col = regmatch.startpos[0].col;
if (curwin->w_p_crb) {
do_check_cursorbind();
}
// When 'cpoptions' contains "u" don't sync undo when
// asking for confirmation.
if (vim_strchr(p_cpo, CPO_UNDO) != NULL) {
no_u_sync++;
}
// Loop until 'y', 'n', 'q', CTRL-E or CTRL-Y typed.
while (subflags.do_ask) {
if (exmode_active) {
print_line_no_prefix(lnum, subflags.do_number, subflags.do_list);
colnr_T sc, ec;
getvcol(curwin, &curwin->w_cursor, &sc, NULL, NULL);
curwin->w_cursor.col = MAX(regmatch.endpos[0].col - 1, 0);
getvcol(curwin, &curwin->w_cursor, NULL, NULL, &ec);
curwin->w_cursor.col = regmatch.startpos[0].col;
if (subflags.do_number || curwin->w_p_nu) {
int numw = number_width(curwin) + 1;
sc += numw;
ec += numw;
}
char *prompt = xmallocz((size_t)ec + 1);
memset(prompt, ' ', (size_t)sc);
memset(prompt + sc, '^', (size_t)(ec - sc) + 1);
char *resp = getcmdline_prompt(-1, prompt, 0, EXPAND_NOTHING, NULL,
CALLBACK_NONE, false, NULL);
msg_putchar('\n');
xfree(prompt);
if (resp != NULL) {
typed = (uint8_t)(*resp);
xfree(resp);
} else {
// getcmdline_prompt() returns NULL if there is no command line to return.
typed = NUL;
}
// When ":normal" runs out of characters we get
// an empty line. Use "q" to get out of the
// loop.
if (ex_normal_busy && typed == NUL) {
typed = 'q';
}
} else {
char *orig_line = NULL;
int len_change = 0;
const bool save_p_lz = p_lz;
int save_p_fen = curwin->w_p_fen;
curwin->w_p_fen = false;
// Invert the matched string.
// Remove the inversion afterwards.
int temp = RedrawingDisabled;
RedrawingDisabled = 0;
// avoid calling update_screen() in vgetorpeek()
p_lz = false;
if (new_start != NULL) {
// There already was a substitution, we would
// like to show this to the user. We cannot
// really update the line, it would change
// what matches. Temporarily replace the line
// and change it back afterwards.
orig_line = xstrnsave(ml_get(lnum), (size_t)ml_get_len(lnum));
char *new_line = concat_str(new_start, sub_firstline + copycol);
// Position the cursor relative to the end of the line, the
// previous substitute may have inserted or deleted characters
// before the cursor.
len_change = (int)strlen(new_line) - (int)strlen(orig_line);
curwin->w_cursor.col += len_change;
ml_replace(lnum, new_line, false);
}
search_match_lines = regmatch.endpos[0].lnum
- regmatch.startpos[0].lnum;
search_match_endcol = regmatch.endpos[0].col
+ len_change;
if (search_match_lines == 0 && search_match_endcol == 0) {
// highlight at least one character for /^/
search_match_endcol = 1;
}
highlight_match = true;
update_topline(curwin);
validate_cursor(curwin);
redraw_later(curwin, UPD_SOME_VALID);
show_cursor_info_later(true);
update_screen();
redraw_later(curwin, UPD_SOME_VALID);
curwin->w_p_fen = save_p_fen;
char *p = _("replace with %s? (y)es/(n)o/(a)ll/(q)uit/(l)ast/scroll up(^E)/down(^Y)");
snprintf(IObuff, IOSIZE, p, sub);
p = xstrdup(IObuff);
typed = prompt_for_input(p, HLF_R, true, NULL);
highlight_match = false;
xfree(p);
msg_didout = false; // don't scroll up
gotocmdline(true);
p_lz = save_p_lz;
RedrawingDisabled = temp;
// restore the line
if (orig_line != NULL) {
ml_replace(lnum, orig_line, false);
}
}
need_wait_return = false; // no hit-return prompt
if (typed == 'q' || typed == ESC || typed == Ctrl_C) {
got_quit = true;
break;
}
if (typed == 'n') {
break;
}
if (typed == 'y') {
break;
}
if (typed == 'l') {
// last: replace and then stop
subflags.do_all = false;
line2 = lnum;
break;
}
if (typed == 'a') {
subflags.do_ask = false;
break;
}
if (typed == Ctrl_E) {
scrollup_clamp();
} else if (typed == Ctrl_Y) {
scrolldown_clamp();
}
}
State = save_State;
setmouse();
if (vim_strchr(p_cpo, CPO_UNDO) != NULL) {
no_u_sync--;
}
if (typed == 'n') {
// For a multi-line match, put matchcol at the NUL at
// the end of the line and set nmatch to one, so that
// we continue looking for a match on the next line.
// Avoids that ":%s/\nB\@=//gc" and ":%s/\n/,\r/gc"
// get stuck when pressing 'n'.
if (nmatch > 1) {
matchcol = (colnr_T)strlen(sub_firstline);
skip_match = true;
}
goto skip;
}
if (got_quit) {
goto skip;
}
}
// Move the cursor to the start of the match, so that we can
// use "\=col(".").
curwin->w_cursor.col = regmatch.startpos[0].col;
// When the match included the "$" of the last line it may
// go beyond the last line of the buffer.
if (nmatch > curbuf->b_ml.ml_line_count - sub_firstlnum + 1) {
nmatch = curbuf->b_ml.ml_line_count - sub_firstlnum + 1;
current_match.end.lnum = sub_firstlnum + (linenr_T)nmatch;
skip_match = true;
// safety check
if (nmatch < 0) {
goto skip;
}
}
// Save the line numbers for the preview buffer
// NOTE: If the pattern matches a final newline, the next line will
// be shown also, but should not be highlighted. Intentional for now.
if (cmdpreview_ns > 0 && !has_second_delim) {
current_match.start.col = regmatch.startpos[0].col;
if (current_match.end.lnum == 0) {
current_match.end.lnum = sub_firstlnum + (linenr_T)nmatch - 1;
}
current_match.end.col = regmatch.endpos[0].col;
ADJUST_SUB_FIRSTLNUM();
lnum += (linenr_T)nmatch - 1;
goto skip;
}
// 3. Substitute the string. During 'inccommand' preview only do this if
// there is a replace pattern.
if (cmdpreview_ns <= 0 || has_second_delim) {
linenr_T lnum_start = lnum; // save the start lnum
int save_ma = curbuf->b_p_ma;
int save_sandbox = sandbox;
if (subflags.do_count) {
// prevent accidentally changing the buffer by a function
curbuf->b_p_ma = false;
sandbox++;
}
// Save flags for recursion. They can change for e.g.
// :s/^/\=execute("s#^##gn")
subflags_T subflags_save = subflags;
// Disallow changing text or switching window in an expression.
textlock++;
// Get length of substitution part, including the NUL.
// When it fails sublen is zero.
sublen = vim_regsub_multi(&regmatch,
sub_firstlnum - regmatch.startpos[0].lnum,
sub, sub_firstline, 0,
REGSUB_BACKSLASH
| (magic_isset() ? REGSUB_MAGIC : 0));
textlock--;
// If getting the substitute string caused an error, don't do
// the replacement.
// Don't keep flags set by a recursive call
subflags = subflags_save;
if (sublen == 0 || aborting() || subflags.do_count) {
curbuf->b_p_ma = save_ma;
sandbox = save_sandbox;
goto skip;
}
// Need room for:
// - result so far in new_start (not for first sub in line)
// - original text up to match
// - length of substituted part
// - original text after match
if (nmatch == 1) {
p1 = sub_firstline;
} else {
p1 = ml_get(sub_firstlnum + (linenr_T)nmatch - 1);
nmatch_tl += nmatch - 1;
}
int copy_len = regmatch.startpos[0].col - copycol;
new_end = sub_grow_buf(&new_start, &new_start_len,
(colnr_T)strlen(p1) - regmatch.endpos[0].col
+ copy_len + sublen + 1);
// copy the text up to the part that matched
memmove(new_end, sub_firstline + copycol, (size_t)copy_len);
new_end += copy_len;
if (new_start_len - copy_len < sublen) {
sublen = new_start_len - copy_len - 1;
}
// Finally, at this point we can know where the match actually will
// start in the new text
int start_col = (int)(new_end - new_start);
current_match.start.col = start_col;
textlock++;
vim_regsub_multi(&regmatch,
sub_firstlnum - regmatch.startpos[0].lnum,
sub, new_end, sublen,
REGSUB_COPY | REGSUB_BACKSLASH
| (magic_isset() ? REGSUB_MAGIC : 0));
textlock--;
sub_nsubs++;
did_sub = true;
// Move the cursor to the start of the line, to avoid that it
// is beyond the end of the line after the substitution.
curwin->w_cursor.col = 0;
// Remember next character to be copied.
copycol = regmatch.endpos[0].col;
ADJUST_SUB_FIRSTLNUM();
// TODO(bfredl): this has some robustness issues, look into later.
bcount_t replaced_bytes = 0;
lpos_T start = regmatch.startpos[0];
lpos_T end = regmatch.endpos[0];
for (i = 0; i < nmatch - 1; i++) {
replaced_bytes += (bcount_t)strlen(ml_get((linenr_T)(lnum_start + i))) + 1;
}
replaced_bytes += end.col - start.col;
// Now the trick is to replace CTRL-M chars with a real line
// break. This would make it impossible to insert a CTRL-M in
// the text. The line break can be avoided by preceding the
// CTRL-M with a backslash. To be able to insert a backslash,
// they must be doubled in the string and are halved here.
// That is Vi compatible.
for (p1 = new_end; *p1; p1++) {
if (p1[0] == '\\' && p1[1] != NUL) { // remove backslash
sublen--; // correct the byte counts for extmark_splice()
STRMOVE(p1, p1 + 1);
} else if (*p1 == CAR) {
if (u_inssub(lnum) == OK) { // prepare for undo
*p1 = NUL; // truncate up to the CR
ml_append(lnum - 1, new_start,
(colnr_T)(p1 - new_start + 1), false);
mark_adjust(lnum + 1, (linenr_T)MAXLNUM, 1, 0, kExtmarkNOOP);
if (subflags.do_ask) {
appended_lines(lnum - 1, 1);
} else {
if (first_line == 0) {
first_line = lnum;
}
last_line = lnum + 1;
}
// All line numbers increase.
sub_firstlnum++;
lnum++;
line2++;
// move the cursor to the new line, like Vi
curwin->w_cursor.lnum++;
// copy the rest
STRMOVE(new_start, p1 + 1);
p1 = new_start - 1;
}
} else {
p1 += utfc_ptr2len(p1) - 1;
}
}
colnr_T new_endcol = (colnr_T)strlen(new_start);
current_match.end.col = new_endcol;
current_match.end.lnum = lnum;
int matchcols = end.col - ((end.lnum == start.lnum)
? start.col : 0);
int subcols = new_endcol - ((lnum == lnum_start) ? start_col : 0);
if (!did_save) {
// Required for Undo to work for extmarks.
u_save_cursor();
did_save = true;
}
extmark_splice(curbuf, (int)lnum_start - 1, start_col,
end.lnum - start.lnum, matchcols, replaced_bytes,
lnum - lnum_start, subcols, sublen - 1, kExtmarkUndo);
}
// 4. If subflags.do_all is set, find next match.
// Prevent endless loop with patterns that match empty
// strings, e.g. :s/$/pat/g or :s/[a-z]* /(&)/g.
// But ":s/\n/#/" is OK.
skip:
// We already know that we did the last subst when we are at
// the end of the line, except that a pattern like
// "bar\|\nfoo" may match at the NUL. "lnum" can be below
// "line2" when there is a \zs in the pattern after a line
// break.
lastone = (skip_match
|| got_int
|| got_quit
|| lnum > line2
|| !(subflags.do_all || do_again)
|| (sub_firstline[matchcol] == NUL && nmatch <= 1
&& !re_multiline(regmatch.regprog)));
nmatch = -1;
// Replace the line in the buffer when needed. This is
// skipped when there are more matches.
// The check for nmatch_tl is needed for when multi-line
// matching must replace the lines before trying to do another
// match, otherwise "\@<=" won't work.
// When the match starts below where we start searching also
// need to replace the line first (using \zs after \n).
if (lastone
|| nmatch_tl > 0
|| (nmatch = vim_regexec_multi(&regmatch, curwin,
curbuf, sub_firstlnum,
matchcol, NULL, NULL)) == 0
|| regmatch.startpos[0].lnum > 0) {
if (new_start != NULL) {
// Copy the rest of the line, that didn't match.
// "matchcol" has to be adjusted, we use the end of
// the line as reference, because the substitute may
// have changed the number of characters. Same for
// "prev_matchcol".
strcat(new_start, sub_firstline + copycol);
matchcol = (colnr_T)strlen(sub_firstline) - matchcol;
prev_matchcol = (colnr_T)strlen(sub_firstline)
- prev_matchcol;
if (u_savesub(lnum) != OK) {
break;
}
ml_replace(lnum, new_start, true);
if (nmatch_tl > 0) {
// Matched lines have now been substituted and are
// useless, delete them. The part after the match
// has been appended to new_start, we don't need
// it in the buffer.
lnum++;
if (u_savedel(lnum, nmatch_tl) != OK) {
break;
}
for (i = 0; i < nmatch_tl; i++) {
ml_delete(lnum, false);
}
mark_adjust(lnum, lnum + nmatch_tl - 1, MAXLNUM, -nmatch_tl, kExtmarkNOOP);
if (subflags.do_ask) {
deleted_lines(lnum, nmatch_tl);
}
lnum--;
line2 -= nmatch_tl; // nr of lines decreases
nmatch_tl = 0;
}
// When asking, undo is saved each time, must also set
// changed flag each time.
if (subflags.do_ask) {
changed_bytes(lnum, 0);
} else {
if (first_line == 0) {
first_line = lnum;
}
last_line = lnum + 1;
}
sub_firstlnum = lnum;
xfree(sub_firstline); // free the temp buffer
sub_firstline = new_start;
new_start = NULL;
matchcol = (colnr_T)strlen(sub_firstline) - matchcol;
prev_matchcol = (colnr_T)strlen(sub_firstline)
- prev_matchcol;
copycol = 0;
}
if (nmatch == -1 && !lastone) {
nmatch = vim_regexec_multi(&regmatch, curwin, curbuf,
sub_firstlnum, matchcol, NULL, NULL);
}
// 5. break if there isn't another match in this line
if (nmatch <= 0) {
// If the match found didn't start where we were
// searching, do the next search in the line where we
// found the match.
if (nmatch == -1) {
lnum -= regmatch.startpos[0].lnum;
}
// uncrustify:off
#define PUSH_PREVIEW_LINES() \
do { \
if (cmdpreview_ns > 0) { \
linenr_T match_lines = current_match.end.lnum \
- current_match.start.lnum +1; \
if (preview_lines.subresults.size > 0) { \
linenr_T last = kv_last(preview_lines.subresults).end.lnum; \
if (last == current_match.start.lnum) { \
preview_lines.lines_needed += match_lines - 1; \
} else { \
preview_lines.lines_needed += match_lines; \
} \
} else { \
preview_lines.lines_needed += match_lines; \
} \
kv_push(preview_lines.subresults, current_match); \
} \
} while (0)
// uncrustify:on
// Push the match to preview_lines.
PUSH_PREVIEW_LINES();
break;
}
}
// Push the match to preview_lines.
PUSH_PREVIEW_LINES();
line_breakcheck();
}
if (did_sub) {
sub_nlines++;
}
xfree(new_start); // for when substitute was cancelled
XFREE_CLEAR(sub_firstline); // free the copy of the original line
}
line_breakcheck();
if (profile_passed_limit(timeout)) {
got_quit = true;
}
}
curbuf->deleted_bytes2 = 0;
if (first_line != 0) {
// Need to subtract the number of added lines from "last_line" to get
// the line number before the change (same as adding the number of
// deleted lines).
i = curbuf->b_ml.ml_line_count - old_line_count;
changed_lines(curbuf, first_line, 0, last_line - (linenr_T)i, (linenr_T)i, false);
int64_t num_added = last_line - first_line;
int64_t num_removed = num_added - i;
buf_updates_send_changes(curbuf, first_line, num_added, num_removed);
}
xfree(sub_firstline); // may have to free allocated copy of the line
// ":s/pat//n" doesn't move the cursor
if (subflags.do_count) {
curwin->w_cursor = old_cursor;
}
if (sub_nsubs > start_nsubs) {
if ((cmdmod.cmod_flags & CMOD_LOCKMARKS) == 0) {
// Set the '[ and '] marks.
curbuf->b_op_start.lnum = eap->line1;
curbuf->b_op_end.lnum = line2;
curbuf->b_op_start.col = curbuf->b_op_end.col = 0;
}
if (!global_busy) {
// when interactive leave cursor on the match
if (!subflags.do_ask) {
if (endcolumn) {
coladvance(curwin, MAXCOL);
} else {
beginline(BL_WHITE | BL_FIX);
}
}
if (cmdpreview_ns <= 0 && !do_sub_msg(subflags.do_count) && subflags.do_ask && p_ch > 0) {
msg("", 0);
}
} else {
global_need_beginline = true;
}
if (subflags.do_print) {
print_line(curwin->w_cursor.lnum, subflags.do_number, subflags.do_list);
}
} else if (!global_busy) {
if (got_int) {
// interrupted
emsg(_(e_interr));
} else if (got_match) {
// did find something but nothing substituted
if (p_ch > 0) {
msg("", 0);
}
} else if (subflags.do_error) {
// nothing found
semsg(_(e_patnotf2), get_search_pat());
}
}
if (subflags.do_ask && hasAnyFolding(curwin)) {
// Cursor position may require updating
changed_window_setting(curwin);
}
vim_regfree(regmatch.regprog);
xfree(sub);
// Restore the flag values, they can be used for ":&&".
subflags.do_all = save_do_all;
subflags.do_ask = save_do_ask;
int retv = 0;
// Show 'inccommand' preview if there are matched lines.
if (cmdpreview_ns > 0 && !aborting()) {
if (got_quit || profile_passed_limit(timeout)) { // Too slow, disable.
set_option_direct(kOptInccommand, STATIC_CSTR_AS_OPTVAL(""), 0, SID_NONE);
} else if (*p_icm != NUL && pat != NULL) {
if (pre_hl_id == 0) {
pre_hl_id = syn_check_group(S_LEN("Substitute"));
}
retv = show_sub(eap, old_cursor, &preview_lines, pre_hl_id, cmdpreview_ns, cmdpreview_bufnr);
}
}
kv_destroy(preview_lines.subresults);
return retv;
#undef ADJUST_SUB_FIRSTLNUM
#undef PUSH_PREVIEW_LINES
}
/// Give message for number of substitutions.
/// Can also be used after a ":global" command.
///
/// @param count_only used 'n' flag for ":s"
///
/// @return true if a message was given.
bool do_sub_msg(bool count_only)
{
// Only report substitutions when:
// - more than 'report' substitutions
// - command was typed by user, or number of changed lines > 'report'
// - giving messages is not disabled by 'lazyredraw'
if (((sub_nsubs > p_report && (KeyTyped || sub_nlines > 1 || p_report < 1))
|| count_only)
&& messaging()) {
if (got_int) {
STRCPY(msg_buf, _("(Interrupted) "));
} else {
*msg_buf = NUL;
}
char *msg_single = count_only
? NGETTEXT("%" PRId64 " match on %" PRId64 " line",
"%" PRId64 " matches on %" PRId64 " line", sub_nsubs)
: NGETTEXT("%" PRId64 " substitution on %" PRId64 " line",
"%" PRId64 " substitutions on %" PRId64 " line", sub_nsubs);
char *msg_plural = count_only
? NGETTEXT("%" PRId64 " match on %" PRId64 " lines",
"%" PRId64 " matches on %" PRId64 " lines", sub_nsubs)
: NGETTEXT("%" PRId64 " substitution on %" PRId64 " lines",
"%" PRId64 " substitutions on %" PRId64 " lines", sub_nsubs);
vim_snprintf_add(msg_buf, sizeof(msg_buf),
NGETTEXT(msg_single, msg_plural, sub_nlines),
(int64_t)sub_nsubs, (int64_t)sub_nlines);
if (msg(msg_buf, 0)) {
// save message to display it after redraw
set_keep_msg(msg_buf, 0);
}
return true;
}
if (got_int) {
emsg(_(e_interr));
return true;
}
return false;
}
static void global_exe_one(char *const cmd, const linenr_T lnum)
{
curwin->w_cursor.lnum = lnum;
curwin->w_cursor.col = 0;
if (*cmd == NUL || *cmd == '\n') {
do_cmdline("p", NULL, NULL, DOCMD_NOWAIT);
} else {
do_cmdline(cmd, NULL, NULL, DOCMD_NOWAIT);
}
}
/// Execute a global command of the form:
///
/// g/pattern/X : execute X on all lines where pattern matches
/// v/pattern/X : execute X on all lines where pattern does not match
///
/// where 'X' is an EX command
///
/// The command character (as well as the trailing slash) is optional, and
/// is assumed to be 'p' if missing.
///
/// This is implemented in two passes: first we scan the file for the pattern and
/// set a mark for each line that (not) matches. Secondly we execute the command
/// for each line that has a mark. This is required because after deleting
/// lines we do not know where to search for the next match.
void ex_global(exarg_T *eap)
{
linenr_T lnum; // line number according to old situation
int type; // first char of cmd: 'v' or 'g'
char *cmd; // command argument
char delim; // delimiter, normally '/'
char *pat;
size_t patlen;
regmmatch_T regmatch;
// When nesting the command works on one line. This allows for
// ":g/found/v/notfound/command".
if (global_busy && (eap->line1 != 1
|| eap->line2 != curbuf->b_ml.ml_line_count)) {
// will increment global_busy to break out of the loop
emsg(_("E147: Cannot do :global recursive with a range"));
return;
}
if (eap->forceit) { // ":global!" is like ":vglobal"
type = 'v';
} else {
type = (uint8_t)(*eap->cmd);
}
cmd = eap->arg;
int which_pat = RE_LAST; // default: use last used regexp
// undocumented vi feature:
// "\/" and "\?": use previous search pattern.
// "\&": use previous substitute pattern.
if (*cmd == '\\') {
cmd++;
if (vim_strchr("/?&", (uint8_t)(*cmd)) == NULL) {
emsg(_(e_backslash));
return;
}
if (*cmd == '&') {
which_pat = RE_SUBST; // use previous substitute pattern
} else {
which_pat = RE_SEARCH; // use previous search pattern
}
cmd++;
pat = "";
patlen = 0;
} else if (*cmd == NUL) {
emsg(_("E148: Regular expression missing from global"));
return;
} else if (check_regexp_delim(*cmd) == FAIL) {
return;
} else {
delim = *cmd; // get the delimiter
cmd++; // skip delimiter if there is one
pat = cmd; // remember start of pattern
cmd = skip_regexp_ex(cmd, delim, magic_isset(), &eap->arg, NULL, NULL);
if (cmd[0] == delim) { // end delimiter found
*cmd++ = NUL; // replace it with a NUL
}
patlen = strlen(pat);
}
char *used_pat;
if (search_regcomp(pat, patlen, &used_pat, RE_BOTH, which_pat,
SEARCH_HIS, &regmatch) == FAIL) {
emsg(_(e_invcmd));
return;
}
if (global_busy) {
lnum = curwin->w_cursor.lnum;
int match = vim_regexec_multi(&regmatch, curwin, curbuf, lnum, 0, NULL, NULL);
if ((type == 'g' && match) || (type == 'v' && !match)) {
global_exe_one(cmd, lnum);
}
} else {
int ndone = 0;
// pass 1: set marks for each (not) matching line
for (lnum = eap->line1; lnum <= eap->line2 && !got_int; lnum++) {
// a match on this line?
int match = vim_regexec_multi(&regmatch, curwin, curbuf, lnum, 0, NULL, NULL);
if (regmatch.regprog == NULL) {
break; // re-compiling regprog failed
}
if ((type == 'g' && match) || (type == 'v' && !match)) {
ml_setmarked(lnum);
ndone++;
}
line_breakcheck();
}
// pass 2: execute the command for each line that has been marked
if (got_int) {
msg(_(e_interr), 0);
} else if (ndone == 0) {
if (type == 'v') {
smsg(0, _("Pattern found in every line: %s"), used_pat);
} else {
smsg(0, _("Pattern not found: %s"), used_pat);
}
} else {
global_exe(cmd);
}
ml_clearmarked(); // clear rest of the marks
}
vim_regfree(regmatch.regprog);
}
/// Execute `cmd` on lines marked with ml_setmarked().
void global_exe(char *cmd)
{
linenr_T old_lcount; // b_ml.ml_line_count before the command
buf_T *old_buf = curbuf; // remember what buffer we started in
linenr_T lnum; // line number according to old situation
// Set current position only once for a global command.
// If global_busy is set, setpcmark() will not do anything.
// If there is an error, global_busy will be incremented.
setpcmark();
// When the command writes a message, don't overwrite the command.
msg_didout = true;
sub_nsubs = 0;
sub_nlines = 0;
global_need_beginline = false;
global_busy = 1;
old_lcount = curbuf->b_ml.ml_line_count;
while (!got_int && (lnum = ml_firstmarked()) != 0 && global_busy == 1) {
global_exe_one(cmd, lnum);
os_breakcheck();
}
global_busy = 0;
if (global_need_beginline) {
beginline(BL_WHITE | BL_FIX);
} else {
check_cursor(curwin); // cursor may be beyond the end of the line
}
// the cursor may not have moved in the text but a change in a previous
// line may move it on the screen
changed_line_abv_curs();
// If it looks like no message was written, allow overwriting the
// command with the report for number of changes.
if (msg_col == 0 && msg_scrolled == 0) {
msg_didout = false;
}
// If substitutes done, report number of substitutes, otherwise report
// number of extra or deleted lines.
// Don't report extra or deleted lines in the edge case where the buffer
// we are in after execution is different from the buffer we started in.
if (!do_sub_msg(false) && curbuf == old_buf) {
msgmore(curbuf->b_ml.ml_line_count - old_lcount);
}
}
#if defined(EXITFREE)
void free_old_sub(void)
{
sub_set_replacement((SubReplacementString) { NULL, 0, NULL });
}
#endif
/// Set up for a tagpreview.
///
/// @param undo_sync sync undo when leaving the window
///
/// @return true when it was created.
bool prepare_tagpreview(bool undo_sync)
{
if (curwin->w_p_pvw) {
return false;
}
// If there is already a preview window open, use that one.
FOR_ALL_WINDOWS_IN_TAB(wp, curtab) {
if (wp->w_p_pvw) {
win_enter(wp, undo_sync);
return false;
}
}
// There is no preview window open yet. Create one.
if (win_split(g_do_tagpreview > 0 ? g_do_tagpreview : 0, 0)
== FAIL) {
return false;
}
curwin->w_p_pvw = true;
curwin->w_p_wfh = true;
RESET_BINDING(curwin); // don't take over 'scrollbind' and 'cursorbind'
curwin->w_p_diff = false; // no 'diff'
set_option_direct(kOptFoldcolumn, STATIC_CSTR_AS_OPTVAL("0"), 0, SID_NONE); // no 'foldcolumn'
return true;
}
/// Shows the effects of the :substitute command being typed ('inccommand').
/// If inccommand=split, shows a preview window and later restores the layout.
///
/// @return 1 if preview window isn't needed, 2 if preview window is needed.
static int show_sub(exarg_T *eap, pos_T old_cusr, PreviewLines *preview_lines, int hl_id,
int cmdpreview_ns, handle_T cmdpreview_bufnr)
FUNC_ATTR_NONNULL_ALL
{
char *save_shm_p = xstrdup(p_shm);
PreviewLines lines = *preview_lines;
buf_T *orig_buf = curbuf;
// We keep a special-purpose buffer around, but don't assume it exists.
buf_T *cmdpreview_buf = NULL;
// disable file info message
set_option_direct(kOptShortmess, STATIC_CSTR_AS_OPTVAL("F"), 0, SID_NONE);
// Place cursor on nearest matching line, to undo do_sub() cursor placement.
for (size_t i = 0; i < lines.subresults.size; i++) {
SubResult curres = lines.subresults.items[i];
if (curres.start.lnum >= old_cusr.lnum) {
curwin->w_cursor.lnum = curres.start.lnum;
curwin->w_cursor.col = curres.start.col;
break;
} // Else: All matches are above, do_sub() already placed cursor.
}
// Update the topline to ensure that main window is on the correct line
update_topline(curwin);
// Width of the "| lnum|..." column which displays the line numbers.
int col_width = 0;
// Use preview window only when inccommand=split and range is not just the current line
bool preview = (*p_icm == 's') && (eap->line1 != old_cusr.lnum || eap->line2 != old_cusr.lnum);
if (preview) {
cmdpreview_buf = buflist_findnr(cmdpreview_bufnr);
assert(cmdpreview_buf != NULL);
if (lines.subresults.size > 0) {
SubResult last_match = kv_last(lines.subresults);
// `last_match.end.lnum` may be 0 when using 'n' flag.
linenr_T highest_lnum = MAX(last_match.start.lnum, last_match.end.lnum);
assert(highest_lnum > 0);
col_width = (int)log10(highest_lnum) + 1 + 3;
}
}
char *str = NULL; // construct the line to show in here
colnr_T old_line_size = 0;
colnr_T line_size = 0;
linenr_T linenr_preview = 0; // last line added to preview buffer
linenr_T linenr_origbuf = 0; // last line added to original buffer
linenr_T next_linenr = 0; // next line to show for the match
for (size_t matchidx = 0; matchidx < lines.subresults.size; matchidx++) {
SubResult match = lines.subresults.items[matchidx];
if (cmdpreview_buf) {
lpos_T p_start = { 0, match.start.col }; // match starts here in preview
lpos_T p_end = { 0, match.end.col }; // ... and ends here
// You Might Gonna Need It
buf_ensure_loaded(cmdpreview_buf);
if (match.pre_match == 0) {
next_linenr = match.start.lnum;
} else {
next_linenr = match.pre_match;
}
// Don't add a line twice
if (next_linenr == linenr_origbuf) {
next_linenr++;
p_start.lnum = linenr_preview; // might be redefined below
p_end.lnum = linenr_preview; // might be redefined below
}
for (; next_linenr <= match.end.lnum; next_linenr++) {
if (next_linenr == match.start.lnum) {
p_start.lnum = linenr_preview + 1;
}
if (next_linenr == match.end.lnum) {
p_end.lnum = linenr_preview + 1;
}
char *line;
if (next_linenr == orig_buf->b_ml.ml_line_count + 1) {
line = "";
} else {
line = ml_get_buf(orig_buf, next_linenr);
line_size = ml_get_buf_len(orig_buf, next_linenr) + col_width + 1;
// Reallocate if line not long enough
if (line_size > old_line_size) {
str = xrealloc(str, (size_t)line_size * sizeof(char));
old_line_size = line_size;
}
}
// Put "|lnum| line" into `str` and append it to the preview buffer.
snprintf(str, (size_t)line_size, "|%*" PRIdLINENR "| %s", col_width - 3,
next_linenr, line);
if (linenr_preview == 0) {
ml_replace_buf(cmdpreview_buf, 1, str, true, false);
} else {
ml_append_buf(cmdpreview_buf, linenr_preview, str, line_size, false);
}
linenr_preview += 1;
}
linenr_origbuf = match.end.lnum;
bufhl_add_hl_pos_offset(cmdpreview_buf, cmdpreview_ns, hl_id, p_start, p_end, col_width);
}
bufhl_add_hl_pos_offset(orig_buf, cmdpreview_ns, hl_id, match.start, match.end, 0);
}
xfree(str);
set_option_direct(kOptShortmess, CSTR_AS_OPTVAL(save_shm_p), 0, SID_NONE);
xfree(save_shm_p);
return preview ? 2 : 1;
}
/// :substitute command.
void ex_substitute(exarg_T *eap)
{
do_sub(eap, profile_zero(), 0, 0);
}
/// :substitute command preview callback.
int ex_substitute_preview(exarg_T *eap, int cmdpreview_ns, handle_T cmdpreview_bufnr)
{
// Only preview once the pattern delimiter has been typed
if (*eap->arg && !ASCII_ISALNUM(*eap->arg)) {
char *save_eap = eap->arg;
int retv = do_sub(eap, profile_setlimit(p_rdt), cmdpreview_ns, cmdpreview_bufnr);
eap->arg = save_eap;
return retv;
}
return 0;
}
/// Skip over the pattern argument of ":vimgrep /pat/[g][j]".
/// Put the start of the pattern in "*s", unless "s" is NULL.
///
/// @param flags if not NULL, put the flags in it: VGR_GLOBAL, VGR_NOJUMP.
/// @param s if not NULL, terminate the pattern with a NUL.
///
/// @return a pointer to the char just past the pattern plus flags.
char *skip_vimgrep_pat(char *p, char **s, int *flags)
{
if (vim_isIDc((uint8_t)(*p))) {
// ":vimgrep pattern fname"
if (s != NULL) {
*s = p;
}
p = skiptowhite(p);
if (s != NULL && *p != NUL) {
*p++ = NUL;
}
} else {
// ":vimgrep /pattern/[g][j] fname"
if (s != NULL) {
*s = p + 1;
}
int c = (uint8_t)(*p);
p = skip_regexp(p + 1, c, true);
if (*p != c) {
return NULL;
}
// Truncate the pattern.
if (s != NULL) {
*p = NUL;
}
p++;
// Find the flags
while (*p == 'g' || *p == 'j' || *p == 'f') {
if (flags != NULL) {
if (*p == 'g') {
*flags |= VGR_GLOBAL;
} else if (*p == 'j') {
*flags |= VGR_NOJUMP;
} else {
*flags |= VGR_FUZZY;
}
}
p++;
}
}
return p;
}
/// List v:oldfiles in a nice way.
void ex_oldfiles(exarg_T *eap)
{
list_T *l = get_vim_var_list(VV_OLDFILES);
int nr = 0;
if (l == NULL) {
msg(_("No old files"), 0);
return;
}
msg_start();
msg_scroll = true;
TV_LIST_ITER(l, li, {
if (got_int) {
break;
}
nr++;
const char *fname = tv_get_string(TV_LIST_ITEM_TV(li));
if (!message_filtered(fname)) {
msg_outnum(nr);
msg_puts(": ");
msg_outtrans(tv_get_string(TV_LIST_ITEM_TV(li)), 0, false);
msg_clr_eos();
msg_putchar('\n');
os_breakcheck();
}
});
// Assume "got_int" was set to truncate the listing.
got_int = false;
// File selection prompt on ":browse oldfiles"
if (cmdmod.cmod_flags & CMOD_BROWSE) {
quit_more = false;
nr = prompt_for_input(NULL, 0, false, NULL);
msg_starthere();
if (nr > 0 && nr <= tv_list_len(l)) {
const char *const p = tv_list_find_str(l, nr - 1);
if (p == NULL) {
return;
}
char *const s = expand_env_save((char *)p);
eap->arg = s;
eap->cmdidx = CMD_edit;
cmdmod.cmod_flags &= ~CMOD_BROWSE;
do_exedit(eap, NULL);
xfree(s);
}
}
}
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