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neovim/src/nvim/misc1.c

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/*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* misc1.c: functions that didn't seem to fit elsewhere
*/
#include <string.h>
#include "nvim/vim.h"
#include "nvim/version_defs.h"
#include "nvim/misc1.h"
#include "nvim/charset.h"
#include "nvim/cursor.h"
#include "nvim/diff.h"
#include "nvim/edit.h"
#include "nvim/eval.h"
#include "nvim/ex_cmds.h"
#include "nvim/ex_docmd.h"
#include "nvim/ex_getln.h"
#include "nvim/fileio.h"
#include "nvim/fold.h"
#include "nvim/getchar.h"
#include "nvim/indent.h"
#include "nvim/indent_c.h"
#include "nvim/main.h"
#include "nvim/mark.h"
#include "nvim/mbyte.h"
#include "nvim/memline.h"
#include "nvim/memory.h"
#include "nvim/message.h"
#include "nvim/misc2.h"
#include "nvim/garray.h"
#include "nvim/move.h"
#include "nvim/option.h"
#include "nvim/os_unix.h"
#include "nvim/path.h"
#include "nvim/quickfix.h"
#include "nvim/regexp.h"
#include "nvim/screen.h"
#include "nvim/search.h"
#include "nvim/strings.h"
#include "nvim/tag.h"
#include "nvim/term.h"
#include "nvim/ui.h"
#include "nvim/undo.h"
#include "nvim/window.h"
#include "nvim/os/os.h"
#include "nvim/os/shell.h"
#ifdef INCLUDE_GENERATED_DECLARATIONS
# include "misc1.c.generated.h"
#endif
/* All user names (for ~user completion as done by shell). */
static garray_T ga_users;
/*
* open_line: Add a new line below or above the current line.
*
* For VREPLACE mode, we only add a new line when we get to the end of the
* file, otherwise we just start replacing the next line.
*
* Caller must take care of undo. Since VREPLACE may affect any number of
* lines however, it may call u_save_cursor() again when starting to change a
* new line.
* "flags": OPENLINE_DELSPACES delete spaces after cursor
* OPENLINE_DO_COM format comments
* OPENLINE_KEEPTRAIL keep trailing spaces
* OPENLINE_MARKFIX adjust mark positions after the line break
* OPENLINE_COM_LIST format comments with list or 2nd line indent
*
* "second_line_indent": indent for after ^^D in Insert mode or if flag
* OPENLINE_COM_LIST
*
* Return TRUE for success, FALSE for failure
*/
int
open_line (
int dir, /* FORWARD or BACKWARD */
int flags,
int second_line_indent
)
{
char_u *saved_line; /* copy of the original line */
char_u *next_line = NULL; /* copy of the next line */
char_u *p_extra = NULL; /* what goes to next line */
int less_cols = 0; /* less columns for mark in new line */
int less_cols_off = 0; /* columns to skip for mark adjust */
pos_T old_cursor; /* old cursor position */
int newcol = 0; /* new cursor column */
int newindent = 0; /* auto-indent of the new line */
int n;
int trunc_line = FALSE; /* truncate current line afterwards */
int retval = FALSE; /* return value, default is FAIL */
int extra_len = 0; /* length of p_extra string */
int lead_len; /* length of comment leader */
char_u *lead_flags; /* position in 'comments' for comment leader */
char_u *leader = NULL; /* copy of comment leader */
char_u *allocated = NULL; /* allocated memory */
char_u *p;
int saved_char = NUL; /* init for GCC */
pos_T *pos;
int do_si = (!p_paste && curbuf->b_p_si
&& !curbuf->b_p_cin
);
int no_si = FALSE; /* reset did_si afterwards */
int first_char = NUL; /* init for GCC */
int vreplace_mode;
int did_append; /* appended a new line */
int saved_pi = curbuf->b_p_pi; /* copy of preserveindent setting */
/*
* make a copy of the current line so we can mess with it
*/
saved_line = vim_strsave(get_cursor_line_ptr());
if (State & VREPLACE_FLAG) {
/*
* With VREPLACE we make a copy of the next line, which we will be
* starting to replace. First make the new line empty and let vim play
* with the indenting and comment leader to its heart's content. Then
* we grab what it ended up putting on the new line, put back the
* original line, and call ins_char() to put each new character onto
* the line, replacing what was there before and pushing the right
* stuff onto the replace stack. -- webb.
*/
if (curwin->w_cursor.lnum < orig_line_count)
next_line = vim_strsave(ml_get(curwin->w_cursor.lnum + 1));
else
next_line = vim_strsave((char_u *)"");
/*
* In VREPLACE mode, a NL replaces the rest of the line, and starts
* replacing the next line, so push all of the characters left on the
* line onto the replace stack. We'll push any other characters that
* might be replaced at the start of the next line (due to autoindent
* etc) a bit later.
*/
replace_push(NUL); /* Call twice because BS over NL expects it */
replace_push(NUL);
p = saved_line + curwin->w_cursor.col;
while (*p != NUL) {
if (has_mbyte)
p += replace_push_mb(p);
else
replace_push(*p++);
}
saved_line[curwin->w_cursor.col] = NUL;
}
if ((State & INSERT)
&& !(State & VREPLACE_FLAG)
) {
p_extra = saved_line + curwin->w_cursor.col;
if (do_si) { /* need first char after new line break */
p = skipwhite(p_extra);
first_char = *p;
}
extra_len = (int)STRLEN(p_extra);
saved_char = *p_extra;
*p_extra = NUL;
}
u_clearline(); /* cannot do "U" command when adding lines */
did_si = FALSE;
ai_col = 0;
/*
* If we just did an auto-indent, then we didn't type anything on
* the prior line, and it should be truncated. Do this even if 'ai' is not
* set because automatically inserting a comment leader also sets did_ai.
*/
if (dir == FORWARD && did_ai)
trunc_line = TRUE;
/*
* If 'autoindent' and/or 'smartindent' is set, try to figure out what
* indent to use for the new line.
*/
if (curbuf->b_p_ai
|| do_si
) {
/*
* count white space on current line
*/
newindent = get_indent_str(saved_line, (int)curbuf->b_p_ts);
if (newindent == 0 && !(flags & OPENLINE_COM_LIST))
newindent = second_line_indent; /* for ^^D command in insert mode */
/*
* Do smart indenting.
* In insert/replace mode (only when dir == FORWARD)
* we may move some text to the next line. If it starts with '{'
* don't add an indent. Fixes inserting a NL before '{' in line
* "if (condition) {"
*/
if (!trunc_line && do_si && *saved_line != NUL
&& (p_extra == NULL || first_char != '{')) {
char_u *ptr;
char_u last_char;
old_cursor = curwin->w_cursor;
ptr = saved_line;
if (flags & OPENLINE_DO_COM)
lead_len = get_leader_len(ptr, NULL, FALSE, TRUE);
else
lead_len = 0;
if (dir == FORWARD) {
/*
* Skip preprocessor directives, unless they are
* recognised as comments.
*/
if (
lead_len == 0 &&
ptr[0] == '#') {
while (ptr[0] == '#' && curwin->w_cursor.lnum > 1)
ptr = ml_get(--curwin->w_cursor.lnum);
newindent = get_indent();
}
if (flags & OPENLINE_DO_COM)
lead_len = get_leader_len(ptr, NULL, FALSE, TRUE);
else
lead_len = 0;
if (lead_len > 0) {
/*
* This case gets the following right:
* \*
* * A comment (read '\' as '/').
* *\
* #define IN_THE_WAY
* This should line up here;
*/
p = skipwhite(ptr);
if (p[0] == '/' && p[1] == '*')
p++;
if (p[0] == '*') {
for (p++; *p; p++) {
if (p[0] == '/' && p[-1] == '*') {
/*
* End of C comment, indent should line up
* with the line containing the start of
* the comment
*/
curwin->w_cursor.col = (colnr_T)(p - ptr);
if ((pos = findmatch(NULL, NUL)) != NULL) {
curwin->w_cursor.lnum = pos->lnum;
newindent = get_indent();
}
}
}
}
} else { /* Not a comment line */
/* Find last non-blank in line */
p = ptr + STRLEN(ptr) - 1;
while (p > ptr && vim_iswhite(*p))
--p;
last_char = *p;
/*
* find the character just before the '{' or ';'
*/
if (last_char == '{' || last_char == ';') {
if (p > ptr)
--p;
while (p > ptr && vim_iswhite(*p))
--p;
}
/*
* Try to catch lines that are split over multiple
* lines. eg:
* if (condition &&
* condition) {
* Should line up here!
* }
*/
if (*p == ')') {
curwin->w_cursor.col = (colnr_T)(p - ptr);
if ((pos = findmatch(NULL, '(')) != NULL) {
curwin->w_cursor.lnum = pos->lnum;
newindent = get_indent();
ptr = get_cursor_line_ptr();
}
}
/*
* If last character is '{' do indent, without
* checking for "if" and the like.
*/
if (last_char == '{') {
did_si = TRUE; /* do indent */
no_si = TRUE; /* don't delete it when '{' typed */
}
/*
* Look for "if" and the like, use 'cinwords'.
* Don't do this if the previous line ended in ';' or
* '}'.
*/
else if (last_char != ';' && last_char != '}'
&& cin_is_cinword(ptr))
did_si = TRUE;
}
} else { /* dir == BACKWARD */
/*
* Skip preprocessor directives, unless they are
* recognised as comments.
*/
if (
lead_len == 0 &&
ptr[0] == '#') {
int was_backslashed = FALSE;
while ((ptr[0] == '#' || was_backslashed) &&
curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) {
if (*ptr && ptr[STRLEN(ptr) - 1] == '\\')
was_backslashed = TRUE;
else
was_backslashed = FALSE;
ptr = ml_get(++curwin->w_cursor.lnum);
}
if (was_backslashed)
newindent = 0; /* Got to end of file */
else
newindent = get_indent();
}
p = skipwhite(ptr);
if (*p == '}') /* if line starts with '}': do indent */
did_si = TRUE;
else /* can delete indent when '{' typed */
can_si_back = TRUE;
}
curwin->w_cursor = old_cursor;
}
if (do_si)
can_si = TRUE;
did_ai = TRUE;
}
/*
* Find out if the current line starts with a comment leader.
* This may then be inserted in front of the new line.
*/
end_comment_pending = NUL;
if (flags & OPENLINE_DO_COM)
lead_len = get_leader_len(saved_line, &lead_flags, dir == BACKWARD, TRUE);
else
lead_len = 0;
if (lead_len > 0) {
char_u *lead_repl = NULL; /* replaces comment leader */
int lead_repl_len = 0; /* length of *lead_repl */
char_u lead_middle[COM_MAX_LEN]; /* middle-comment string */
char_u lead_end[COM_MAX_LEN]; /* end-comment string */
char_u *comment_end = NULL; /* where lead_end has been found */
int extra_space = FALSE; /* append extra space */
int current_flag;
int require_blank = FALSE; /* requires blank after middle */
char_u *p2;
/*
* If the comment leader has the start, middle or end flag, it may not
* be used or may be replaced with the middle leader.
*/
for (p = lead_flags; *p && *p != ':'; ++p) {
if (*p == COM_BLANK) {
require_blank = TRUE;
continue;
}
if (*p == COM_START || *p == COM_MIDDLE) {
current_flag = *p;
if (*p == COM_START) {
/*
* Doing "O" on a start of comment does not insert leader.
*/
if (dir == BACKWARD) {
lead_len = 0;
break;
}
/* find start of middle part */
(void)copy_option_part(&p, lead_middle, COM_MAX_LEN, ",");
require_blank = FALSE;
}
/*
* Isolate the strings of the middle and end leader.
*/
while (*p && p[-1] != ':') { /* find end of middle flags */
if (*p == COM_BLANK)
require_blank = TRUE;
++p;
}
(void)copy_option_part(&p, lead_middle, COM_MAX_LEN, ",");
while (*p && p[-1] != ':') { /* find end of end flags */
/* Check whether we allow automatic ending of comments */
if (*p == COM_AUTO_END)
end_comment_pending = -1; /* means we want to set it */
++p;
}
n = copy_option_part(&p, lead_end, COM_MAX_LEN, ",");
if (end_comment_pending == -1) /* we can set it now */
end_comment_pending = lead_end[n - 1];
/*
* If the end of the comment is in the same line, don't use
* the comment leader.
*/
if (dir == FORWARD) {
for (p = saved_line + lead_len; *p; ++p)
if (STRNCMP(p, lead_end, n) == 0) {
comment_end = p;
lead_len = 0;
break;
}
}
/*
* Doing "o" on a start of comment inserts the middle leader.
*/
if (lead_len > 0) {
if (current_flag == COM_START) {
lead_repl = lead_middle;
lead_repl_len = (int)STRLEN(lead_middle);
}
/*
* If we have hit RETURN immediately after the start
* comment leader, then put a space after the middle
* comment leader on the next line.
*/
if (!vim_iswhite(saved_line[lead_len - 1])
&& ((p_extra != NULL
&& (int)curwin->w_cursor.col == lead_len)
|| (p_extra == NULL
&& saved_line[lead_len] == NUL)
|| require_blank))
extra_space = TRUE;
}
break;
}
if (*p == COM_END) {
/*
* Doing "o" on the end of a comment does not insert leader.
* Remember where the end is, might want to use it to find the
* start (for C-comments).
*/
if (dir == FORWARD) {
comment_end = skipwhite(saved_line);
lead_len = 0;
break;
}
/*
* Doing "O" on the end of a comment inserts the middle leader.
* Find the string for the middle leader, searching backwards.
*/
while (p > curbuf->b_p_com && *p != ',')
--p;
for (lead_repl = p; lead_repl > curbuf->b_p_com
&& lead_repl[-1] != ':'; --lead_repl)
;
lead_repl_len = (int)(p - lead_repl);
/* We can probably always add an extra space when doing "O" on
* the comment-end */
extra_space = TRUE;
/* Check whether we allow automatic ending of comments */
for (p2 = p; *p2 && *p2 != ':'; p2++) {
if (*p2 == COM_AUTO_END)
end_comment_pending = -1; /* means we want to set it */
}
if (end_comment_pending == -1) {
/* Find last character in end-comment string */
while (*p2 && *p2 != ',')
p2++;
end_comment_pending = p2[-1];
}
break;
}
if (*p == COM_FIRST) {
/*
* Comment leader for first line only: Don't repeat leader
* when using "O", blank out leader when using "o".
*/
if (dir == BACKWARD)
lead_len = 0;
else {
lead_repl = (char_u *)"";
lead_repl_len = 0;
}
break;
}
}
if (lead_len) {
/* allocate buffer (may concatenate p_extra later) */
leader = xmalloc(lead_len + lead_repl_len + extra_space + extra_len
+ (second_line_indent > 0 ? second_line_indent : 0) + 1);
allocated = leader; /* remember to free it later */
vim_strncpy(leader, saved_line, lead_len);
/*
* Replace leader with lead_repl, right or left adjusted
*/
if (lead_repl != NULL) {
int c = 0;
int off = 0;
for (p = lead_flags; *p != NUL && *p != ':'; ) {
if (*p == COM_RIGHT || *p == COM_LEFT)
c = *p++;
else if (VIM_ISDIGIT(*p) || *p == '-')
off = getdigits(&p);
else
++p;
}
if (c == COM_RIGHT) { /* right adjusted leader */
/* find last non-white in the leader to line up with */
for (p = leader + lead_len - 1; p > leader
&& vim_iswhite(*p); --p)
;
++p;
/* Compute the length of the replaced characters in
* screen characters, not bytes. */
{
int repl_size = vim_strnsize(lead_repl,
lead_repl_len);
int old_size = 0;
char_u *endp = p;
int l;
while (old_size < repl_size && p > leader) {
mb_ptr_back(leader, p);
old_size += ptr2cells(p);
}
l = lead_repl_len - (int)(endp - p);
if (l != 0)
memmove(endp + l, endp,
(size_t)((leader + lead_len) - endp));
lead_len += l;
}
memmove(p, lead_repl, (size_t)lead_repl_len);
if (p + lead_repl_len > leader + lead_len)
p[lead_repl_len] = NUL;
/* blank-out any other chars from the old leader. */
while (--p >= leader) {
int l = mb_head_off(leader, p);
if (l > 1) {
p -= l;
if (ptr2cells(p) > 1) {
p[1] = ' ';
--l;
}
memmove(p + 1, p + l + 1,
(size_t)((leader + lead_len) - (p + l + 1)));
lead_len -= l;
*p = ' ';
} else if (!vim_iswhite(*p))
*p = ' ';
}
} else { /* left adjusted leader */
p = skipwhite(leader);
/* Compute the length of the replaced characters in
* screen characters, not bytes. Move the part that is
* not to be overwritten. */
{
int repl_size = vim_strnsize(lead_repl,
lead_repl_len);
int i;
int l;
for (i = 0; p[i] != NUL && i < lead_len; i += l) {
l = (*mb_ptr2len)(p + i);
if (vim_strnsize(p, i + l) > repl_size)
break;
}
if (i != lead_repl_len) {
memmove(p + lead_repl_len, p + i,
(size_t)(lead_len - i - (p - leader)));
lead_len += lead_repl_len - i;
}
}
memmove(p, lead_repl, (size_t)lead_repl_len);
/* Replace any remaining non-white chars in the old
* leader by spaces. Keep Tabs, the indent must
* remain the same. */
for (p += lead_repl_len; p < leader + lead_len; ++p)
if (!vim_iswhite(*p)) {
/* Don't put a space before a TAB. */
if (p + 1 < leader + lead_len && p[1] == TAB) {
--lead_len;
memmove(p, p + 1,
(leader + lead_len) - p);
} else {
int l = (*mb_ptr2len)(p);
if (l > 1) {
if (ptr2cells(p) > 1) {
/* Replace a double-wide char with
* two spaces */
--l;
*p++ = ' ';
}
memmove(p + 1, p + l,
(leader + lead_len) - p);
lead_len -= l - 1;
}
*p = ' ';
}
}
*p = NUL;
}
/* Recompute the indent, it may have changed. */
if (curbuf->b_p_ai
|| do_si
)
newindent = get_indent_str(leader, (int)curbuf->b_p_ts);
/* Add the indent offset */
if (newindent + off < 0) {
off = -newindent;
newindent = 0;
} else
newindent += off;
/* Correct trailing spaces for the shift, so that
* alignment remains equal. */
while (off > 0 && lead_len > 0
&& leader[lead_len - 1] == ' ') {
/* Don't do it when there is a tab before the space */
if (vim_strchr(skipwhite(leader), '\t') != NULL)
break;
--lead_len;
--off;
}
/* If the leader ends in white space, don't add an
* extra space */
if (lead_len > 0 && vim_iswhite(leader[lead_len - 1]))
extra_space = FALSE;
leader[lead_len] = NUL;
}
if (extra_space) {
leader[lead_len++] = ' ';
leader[lead_len] = NUL;
}
newcol = lead_len;
/*
* if a new indent will be set below, remove the indent that
* is in the comment leader
*/
if (newindent
|| did_si
) {
while (lead_len && vim_iswhite(*leader)) {
--lead_len;
--newcol;
++leader;
}
}
did_si = can_si = FALSE;
} else if (comment_end != NULL) {
/*
* We have finished a comment, so we don't use the leader.
* If this was a C-comment and 'ai' or 'si' is set do a normal
* indent to align with the line containing the start of the
* comment.
*/
if (comment_end[0] == '*' && comment_end[1] == '/' &&
(curbuf->b_p_ai
|| do_si
)) {
old_cursor = curwin->w_cursor;
curwin->w_cursor.col = (colnr_T)(comment_end - saved_line);
if ((pos = findmatch(NULL, NUL)) != NULL) {
curwin->w_cursor.lnum = pos->lnum;
newindent = get_indent();
}
curwin->w_cursor = old_cursor;
}
}
}
/* (State == INSERT || State == REPLACE), only when dir == FORWARD */
if (p_extra != NULL) {
*p_extra = saved_char; /* restore char that NUL replaced */
/*
* When 'ai' set or "flags" has OPENLINE_DELSPACES, skip to the first
* non-blank.
*
* When in REPLACE mode, put the deleted blanks on the replace stack,
* preceded by a NUL, so they can be put back when a BS is entered.
*/
if (REPLACE_NORMAL(State))
replace_push(NUL); /* end of extra blanks */
if (curbuf->b_p_ai || (flags & OPENLINE_DELSPACES)) {
while ((*p_extra == ' ' || *p_extra == '\t')
&& (!enc_utf8
|| !utf_iscomposing(utf_ptr2char(p_extra + 1)))
) {
if (REPLACE_NORMAL(State))
replace_push(*p_extra);
++p_extra;
++less_cols_off;
}
}
if (*p_extra != NUL)
did_ai = FALSE; /* append some text, don't truncate now */
/* columns for marks adjusted for removed columns */
less_cols = (int)(p_extra - saved_line);
}
if (p_extra == NULL)
p_extra = (char_u *)""; /* append empty line */
/* concatenate leader and p_extra, if there is a leader */
if (lead_len) {
if (flags & OPENLINE_COM_LIST && second_line_indent > 0) {
int i;
int padding = second_line_indent
- (newindent + (int)STRLEN(leader));
/* Here whitespace is inserted after the comment char.
* Below, set_indent(newindent, SIN_INSERT) will insert the
* whitespace needed before the comment char. */
for (i = 0; i < padding; i++) {
STRCAT(leader, " ");
less_cols--;
newcol++;
}
}
STRCAT(leader, p_extra);
p_extra = leader;
did_ai = TRUE; /* So truncating blanks works with comments */
less_cols -= lead_len;
} else
end_comment_pending = NUL; /* turns out there was no leader */
old_cursor = curwin->w_cursor;
if (dir == BACKWARD)
--curwin->w_cursor.lnum;
if (!(State & VREPLACE_FLAG) || old_cursor.lnum >= orig_line_count) {
if (ml_append(curwin->w_cursor.lnum, p_extra, (colnr_T)0, FALSE)
== FAIL)
goto theend;
/* Postpone calling changed_lines(), because it would mess up folding
* with markers. */
mark_adjust(curwin->w_cursor.lnum + 1, (linenr_T)MAXLNUM, 1L, 0L);
did_append = TRUE;
} else {
/*
* In VREPLACE mode we are starting to replace the next line.
*/
curwin->w_cursor.lnum++;
if (curwin->w_cursor.lnum >= Insstart.lnum + vr_lines_changed) {
/* In case we NL to a new line, BS to the previous one, and NL
* again, we don't want to save the new line for undo twice.
*/
(void)u_save_cursor(); /* errors are ignored! */
vr_lines_changed++;
}
ml_replace(curwin->w_cursor.lnum, p_extra, TRUE);
changed_bytes(curwin->w_cursor.lnum, 0);
curwin->w_cursor.lnum--;
did_append = FALSE;
}
if (newindent
|| did_si
) {
++curwin->w_cursor.lnum;
if (did_si) {
int sw = (int)get_sw_value(curbuf);
if (p_sr)
newindent -= newindent % sw;
newindent += sw;
}
/* Copy the indent */
if (curbuf->b_p_ci) {
(void)copy_indent(newindent, saved_line);
/*
* Set the 'preserveindent' option so that any further screwing
* with the line doesn't entirely destroy our efforts to preserve
* it. It gets restored at the function end.
*/
curbuf->b_p_pi = TRUE;
} else
(void)set_indent(newindent, SIN_INSERT);
less_cols -= curwin->w_cursor.col;
ai_col = curwin->w_cursor.col;
/*
* In REPLACE mode, for each character in the new indent, there must
* be a NUL on the replace stack, for when it is deleted with BS
*/
if (REPLACE_NORMAL(State))
for (n = 0; n < (int)curwin->w_cursor.col; ++n)
replace_push(NUL);
newcol += curwin->w_cursor.col;
if (no_si)
did_si = FALSE;
}
/*
* In REPLACE mode, for each character in the extra leader, there must be
* a NUL on the replace stack, for when it is deleted with BS.
*/
if (REPLACE_NORMAL(State))
while (lead_len-- > 0)
replace_push(NUL);
curwin->w_cursor = old_cursor;
if (dir == FORWARD) {
if (trunc_line || (State & INSERT)) {
/* truncate current line at cursor */
saved_line[curwin->w_cursor.col] = NUL;
/* Remove trailing white space, unless OPENLINE_KEEPTRAIL used. */
if (trunc_line && !(flags & OPENLINE_KEEPTRAIL))
truncate_spaces(saved_line);
ml_replace(curwin->w_cursor.lnum, saved_line, FALSE);
saved_line = NULL;
if (did_append) {
changed_lines(curwin->w_cursor.lnum, curwin->w_cursor.col,
curwin->w_cursor.lnum + 1, 1L);
did_append = FALSE;
/* Move marks after the line break to the new line. */
if (flags & OPENLINE_MARKFIX)
mark_col_adjust(curwin->w_cursor.lnum,
curwin->w_cursor.col + less_cols_off,
1L, (long)-less_cols);
} else
changed_bytes(curwin->w_cursor.lnum, curwin->w_cursor.col);
}
/*
* Put the cursor on the new line. Careful: the scrollup() above may
* have moved w_cursor, we must use old_cursor.
*/
curwin->w_cursor.lnum = old_cursor.lnum + 1;
}
if (did_append)
changed_lines(curwin->w_cursor.lnum, 0, curwin->w_cursor.lnum, 1L);
curwin->w_cursor.col = newcol;
curwin->w_cursor.coladd = 0;
/*
* In VREPLACE mode, we are handling the replace stack ourselves, so stop
* fixthisline() from doing it (via change_indent()) by telling it we're in
* normal INSERT mode.
*/
if (State & VREPLACE_FLAG) {
vreplace_mode = State; /* So we know to put things right later */
State = INSERT;
} else
vreplace_mode = 0;
/*
* May do lisp indenting.
*/
if (!p_paste
&& leader == NULL
&& curbuf->b_p_lisp
&& curbuf->b_p_ai) {
fixthisline(get_lisp_indent);
p = get_cursor_line_ptr();
ai_col = (colnr_T)(skipwhite(p) - p);
}
/*
* May do indenting after opening a new line.
*/
if (!p_paste
&& (curbuf->b_p_cin
|| *curbuf->b_p_inde != NUL
)
&& in_cinkeys(dir == FORWARD
? KEY_OPEN_FORW
: KEY_OPEN_BACK, ' ', linewhite(curwin->w_cursor.lnum))) {
do_c_expr_indent();
p = get_cursor_line_ptr();
ai_col = (colnr_T)(skipwhite(p) - p);
}
if (vreplace_mode != 0)
State = vreplace_mode;
/*
* Finally, VREPLACE gets the stuff on the new line, then puts back the
* original line, and inserts the new stuff char by char, pushing old stuff
* onto the replace stack (via ins_char()).
*/
if (State & VREPLACE_FLAG) {
/* Put new line in p_extra */
p_extra = vim_strsave(get_cursor_line_ptr());
/* Put back original line */
ml_replace(curwin->w_cursor.lnum, next_line, FALSE);
/* Insert new stuff into line again */
curwin->w_cursor.col = 0;
curwin->w_cursor.coladd = 0;
ins_bytes(p_extra); /* will call changed_bytes() */
free(p_extra);
next_line = NULL;
}
retval = TRUE; /* success! */
theend:
curbuf->b_p_pi = saved_pi;
free(saved_line);
free(next_line);
free(allocated);
return retval;
}
/*
* get_leader_len() returns the length in bytes of the prefix of the given
* string which introduces a comment. If this string is not a comment then
* 0 is returned.
* When "flags" is not NULL, it is set to point to the flags of the recognized
* comment leader.
* "backward" must be true for the "O" command.
* If "include_space" is set, include trailing whitespace while calculating the
* length.
*/
int get_leader_len(char_u *line, char_u **flags, int backward, int include_space)
{
int i, j;
int result;
int got_com = FALSE;
int found_one;
char_u part_buf[COM_MAX_LEN]; /* buffer for one option part */
char_u *string; /* pointer to comment string */
char_u *list;
int middle_match_len = 0;
char_u *prev_list;
char_u *saved_flags = NULL;
result = i = 0;
while (vim_iswhite(line[i])) /* leading white space is ignored */
++i;
/*
* Repeat to match several nested comment strings.
*/
while (line[i] != NUL) {
/*
* scan through the 'comments' option for a match
*/
found_one = FALSE;
for (list = curbuf->b_p_com; *list; ) {
/* Get one option part into part_buf[]. Advance "list" to next
* one. Put "string" at start of string. */
if (!got_com && flags != NULL)
*flags = list; /* remember where flags started */
prev_list = list;
(void)copy_option_part(&list, part_buf, COM_MAX_LEN, ",");
string = vim_strchr(part_buf, ':');
if (string == NULL) /* missing ':', ignore this part */
continue;
*string++ = NUL; /* isolate flags from string */
/* If we found a middle match previously, use that match when this
* is not a middle or end. */
if (middle_match_len != 0
&& vim_strchr(part_buf, COM_MIDDLE) == NULL
&& vim_strchr(part_buf, COM_END) == NULL)
break;
/* When we already found a nested comment, only accept further
* nested comments. */
if (got_com && vim_strchr(part_buf, COM_NEST) == NULL)
continue;
/* When 'O' flag present and using "O" command skip this one. */
if (backward && vim_strchr(part_buf, COM_NOBACK) != NULL)
continue;
/* Line contents and string must match.
* When string starts with white space, must have some white space
* (but the amount does not need to match, there might be a mix of
* TABs and spaces). */
if (vim_iswhite(string[0])) {
if (i == 0 || !vim_iswhite(line[i - 1]))
continue; /* missing white space */
while (vim_iswhite(string[0]))
++string;
}
for (j = 0; string[j] != NUL && string[j] == line[i + j]; ++j)
;
if (string[j] != NUL)
continue; /* string doesn't match */
/* When 'b' flag used, there must be white space or an
* end-of-line after the string in the line. */
if (vim_strchr(part_buf, COM_BLANK) != NULL
&& !vim_iswhite(line[i + j]) && line[i + j] != NUL)
continue;
/* We have found a match, stop searching unless this is a middle
* comment. The middle comment can be a substring of the end
* comment in which case it's better to return the length of the
* end comment and its flags. Thus we keep searching with middle
* and end matches and use an end match if it matches better. */
if (vim_strchr(part_buf, COM_MIDDLE) != NULL) {
if (middle_match_len == 0) {
middle_match_len = j;
saved_flags = prev_list;
}
continue;
}
if (middle_match_len != 0 && j > middle_match_len)
/* Use this match instead of the middle match, since it's a
* longer thus better match. */
middle_match_len = 0;
if (middle_match_len == 0)
i += j;
found_one = TRUE;
break;
}
if (middle_match_len != 0) {
/* Use the previously found middle match after failing to find a
* match with an end. */
if (!got_com && flags != NULL)
*flags = saved_flags;
i += middle_match_len;
found_one = TRUE;
}
/* No match found, stop scanning. */
if (!found_one)
break;
result = i;
/* Include any trailing white space. */
while (vim_iswhite(line[i]))
++i;
if (include_space)
result = i;
/* If this comment doesn't nest, stop here. */
got_com = TRUE;
if (vim_strchr(part_buf, COM_NEST) == NULL)
break;
}
return result;
}
/*
* Return the offset at which the last comment in line starts. If there is no
* comment in the whole line, -1 is returned.
*
* When "flags" is not null, it is set to point to the flags describing the
* recognized comment leader.
*/
int get_last_leader_offset(char_u *line, char_u **flags)
{
int result = -1;
int i, j;
int lower_check_bound = 0;
char_u *string;
char_u *com_leader;
char_u *com_flags;
char_u *list;
int found_one;
char_u part_buf[COM_MAX_LEN]; /* buffer for one option part */
/*
* Repeat to match several nested comment strings.
*/
i = (int)STRLEN(line);
while (--i >= lower_check_bound) {
/*
* scan through the 'comments' option for a match
*/
found_one = FALSE;
for (list = curbuf->b_p_com; *list; ) {
char_u *flags_save = list;
/*
* Get one option part into part_buf[]. Advance list to next one.
* put string at start of string.
*/
(void)copy_option_part(&list, part_buf, COM_MAX_LEN, ",");
string = vim_strchr(part_buf, ':');
if (string == NULL) { /* If everything is fine, this cannot actually
* happen. */
continue;
}
*string++ = NUL; /* Isolate flags from string. */
com_leader = string;
/*
* Line contents and string must match.
* When string starts with white space, must have some white space
* (but the amount does not need to match, there might be a mix of
* TABs and spaces).
*/
if (vim_iswhite(string[0])) {
if (i == 0 || !vim_iswhite(line[i - 1]))
continue;
while (vim_iswhite(string[0]))
++string;
}
for (j = 0; string[j] != NUL && string[j] == line[i + j]; ++j)
/* do nothing */;
if (string[j] != NUL)
continue;
/*
* When 'b' flag used, there must be white space or an
* end-of-line after the string in the line.
*/
if (vim_strchr(part_buf, COM_BLANK) != NULL
&& !vim_iswhite(line[i + j]) && line[i + j] != NUL) {
continue;
}
/*
* We have found a match, stop searching.
*/
found_one = TRUE;
if (flags)
*flags = flags_save;
com_flags = flags_save;
break;
}
if (found_one) {
char_u part_buf2[COM_MAX_LEN]; /* buffer for one option part */
int len1, len2, off;
result = i;
/*
* If this comment nests, continue searching.
*/
if (vim_strchr(part_buf, COM_NEST) != NULL)
continue;
lower_check_bound = i;
/* Let's verify whether the comment leader found is a substring
* of other comment leaders. If it is, let's adjust the
* lower_check_bound so that we make sure that we have determined
* the comment leader correctly.
*/
while (vim_iswhite(*com_leader))
++com_leader;
len1 = (int)STRLEN(com_leader);
for (list = curbuf->b_p_com; *list; ) {
char_u *flags_save = list;
(void)copy_option_part(&list, part_buf2, COM_MAX_LEN, ",");
if (flags_save == com_flags)
continue;
string = vim_strchr(part_buf2, ':');
++string;
while (vim_iswhite(*string))
++string;
len2 = (int)STRLEN(string);
if (len2 == 0)
continue;
/* Now we have to verify whether string ends with a substring
* beginning the com_leader. */
for (off = (len2 > i ? i : len2); off > 0 && off + len1 > len2; ) {
--off;
if (!STRNCMP(string + off, com_leader, len2 - off)) {
if (i - off < lower_check_bound)
lower_check_bound = i - off;
}
}
}
}
}
return result;
}
/*
* Return the number of window lines occupied by buffer line "lnum".
*/
int plines(linenr_T lnum)
{
return plines_win(curwin, lnum, TRUE);
}
int
plines_win (
win_T *wp,
linenr_T lnum,
int winheight /* when TRUE limit to window height */
)
{
/* Check for filler lines above this buffer line. When folded the result
* is one line anyway. */
return plines_win_nofill(wp, lnum, winheight) + diff_check_fill(wp, lnum);
}
int plines_nofill(linenr_T lnum)
{
return plines_win_nofill(curwin, lnum, TRUE);
}
int
plines_win_nofill (
win_T *wp,
linenr_T lnum,
int winheight /* when TRUE limit to window height */
)
{
int lines;
if (!wp->w_p_wrap)
return 1;
if (wp->w_width == 0)
return 1;
/* A folded lines is handled just like an empty line. */
/* NOTE: Caller must handle lines that are MAYBE folded. */
if (lineFolded(wp, lnum) == TRUE)
return 1;
lines = plines_win_nofold(wp, lnum);
if (winheight > 0 && lines > wp->w_height)
return (int)wp->w_height;
return lines;
}
/*
* Return number of window lines physical line "lnum" will occupy in window
* "wp". Does not care about folding, 'wrap' or 'diff'.
*/
int plines_win_nofold(win_T *wp, linenr_T lnum)
{
char_u *s;
long col;
int width;
s = ml_get_buf(wp->w_buffer, lnum, FALSE);
if (*s == NUL) /* empty line */
return 1;
col = win_linetabsize(wp, s, (colnr_T)MAXCOL);
/*
* If list mode is on, then the '$' at the end of the line may take up one
* extra column.
*/
if (wp->w_p_list && lcs_eol != NUL)
col += 1;
/*
* Add column offset for 'number', 'relativenumber' and 'foldcolumn'.
*/
width = wp->w_width - win_col_off(wp);
if (width <= 0)
return 32000;
if (col <= width)
return 1;
col -= width;
width += win_col_off2(wp);
return (col + (width - 1)) / width + 1;
}
/*
* Like plines_win(), but only reports the number of physical screen lines
* used from the start of the line to the given column number.
*/
int plines_win_col(win_T *wp, linenr_T lnum, long column)
{
long col;
char_u *s;
int lines = 0;
int width;
/* Check for filler lines above this buffer line. When folded the result
* is one line anyway. */
lines = diff_check_fill(wp, lnum);
if (!wp->w_p_wrap)
return lines + 1;
if (wp->w_width == 0)
return lines + 1;
s = ml_get_buf(wp->w_buffer, lnum, FALSE);
col = 0;
while (*s != NUL && --column >= 0) {
col += win_lbr_chartabsize(wp, s, (colnr_T)col, NULL);
mb_ptr_adv(s);
}
/*
* If *s is a TAB, and the TAB is not displayed as ^I, and we're not in
* INSERT mode, then col must be adjusted so that it represents the last
* screen position of the TAB. This only fixes an error when the TAB wraps
* from one screen line to the next (when 'columns' is not a multiple of
* 'ts') -- webb.
*/
if (*s == TAB && (State & NORMAL) && (!wp->w_p_list || lcs_tab1))
col += win_lbr_chartabsize(wp, s, (colnr_T)col, NULL) - 1;
/*
* Add column offset for 'number', 'relativenumber', 'foldcolumn', etc.
*/
width = wp->w_width - win_col_off(wp);
if (width <= 0)
return 9999;
lines += 1;
if (col > width)
lines += (col - width) / (width + win_col_off2(wp)) + 1;
return lines;
}
int plines_m_win(win_T *wp, linenr_T first, linenr_T last)
{
int count = 0;
while (first <= last) {
int x;
/* Check if there are any really folded lines, but also included lines
* that are maybe folded. */
x = foldedCount(wp, first, NULL);
if (x > 0) {
++count; /* count 1 for "+-- folded" line */
first += x;
} else {
if (first == wp->w_topline)
count += plines_win_nofill(wp, first, TRUE) + wp->w_topfill;
else
count += plines_win(wp, first, TRUE);
++first;
}
}
return count;
}
/*
* Insert string "p" at the cursor position. Stops at a NUL byte.
* Handles Replace mode and multi-byte characters.
*/
void ins_bytes(char_u *p)
{
ins_bytes_len(p, (int)STRLEN(p));
}
/*
* Insert string "p" with length "len" at the cursor position.
* Handles Replace mode and multi-byte characters.
*/
void ins_bytes_len(char_u *p, int len)
{
int i;
int n;
if (has_mbyte)
for (i = 0; i < len; i += n) {
if (enc_utf8)
/* avoid reading past p[len] */
n = utfc_ptr2len_len(p + i, len - i);
else
n = (*mb_ptr2len)(p + i);
ins_char_bytes(p + i, n);
}
else
for (i = 0; i < len; ++i)
ins_char(p[i]);
}
/*
* Insert or replace a single character at the cursor position.
* When in REPLACE or VREPLACE mode, replace any existing character.
* Caller must have prepared for undo.
* For multi-byte characters we get the whole character, the caller must
* convert bytes to a character.
*/
void ins_char(int c)
{
char_u buf[MB_MAXBYTES + 1];
int n;
n = (*mb_char2bytes)(c, buf);
/* When "c" is 0x100, 0x200, etc. we don't want to insert a NUL byte.
* Happens for CTRL-Vu9900. */
if (buf[0] == 0)
buf[0] = '\n';
ins_char_bytes(buf, n);
}
void ins_char_bytes(char_u *buf, int charlen)
{
int c = buf[0];
int newlen; /* nr of bytes inserted */
int oldlen; /* nr of bytes deleted (0 when not replacing) */
char_u *p;
char_u *newp;
char_u *oldp;
int linelen; /* length of old line including NUL */
colnr_T col;
linenr_T lnum = curwin->w_cursor.lnum;
int i;
/* Break tabs if needed. */
if (virtual_active() && curwin->w_cursor.coladd > 0)
coladvance_force(getviscol());
col = curwin->w_cursor.col;
oldp = ml_get(lnum);
linelen = (int)STRLEN(oldp) + 1;
/* The lengths default to the values for when not replacing. */
oldlen = 0;
newlen = charlen;
if (State & REPLACE_FLAG) {
if (State & VREPLACE_FLAG) {
colnr_T new_vcol = 0; /* init for GCC */
colnr_T vcol;
int old_list;
/*
* Disable 'list' temporarily, unless 'cpo' contains the 'L' flag.
* Returns the old value of list, so when finished,
* curwin->w_p_list should be set back to this.
*/
old_list = curwin->w_p_list;
if (old_list && vim_strchr(p_cpo, CPO_LISTWM) == NULL)
curwin->w_p_list = FALSE;
/*
* In virtual replace mode each character may replace one or more
* characters (zero if it's a TAB). Count the number of bytes to
* be deleted to make room for the new character, counting screen
* cells. May result in adding spaces to fill a gap.
*/
getvcol(curwin, &curwin->w_cursor, NULL, &vcol, NULL);
new_vcol = vcol + chartabsize(buf, vcol);
while (oldp[col + oldlen] != NUL && vcol < new_vcol) {
vcol += chartabsize(oldp + col + oldlen, vcol);
/* Don't need to remove a TAB that takes us to the right
* position. */
if (vcol > new_vcol && oldp[col + oldlen] == TAB)
break;
oldlen += (*mb_ptr2len)(oldp + col + oldlen);
/* Deleted a bit too much, insert spaces. */
if (vcol > new_vcol)
newlen += vcol - new_vcol;
}
curwin->w_p_list = old_list;
} else if (oldp[col] != NUL) {
/* normal replace */
oldlen = (*mb_ptr2len)(oldp + col);
}
/* Push the replaced bytes onto the replace stack, so that they can be
* put back when BS is used. The bytes of a multi-byte character are
* done the other way around, so that the first byte is popped off
* first (it tells the byte length of the character). */
replace_push(NUL);
for (i = 0; i < oldlen; ++i) {
if (has_mbyte)
i += replace_push_mb(oldp + col + i) - 1;
else
replace_push(oldp[col + i]);
}
}
newp = (char_u *) xmalloc((size_t)(linelen + newlen - oldlen));
/* Copy bytes before the cursor. */
if (col > 0)
memmove(newp, oldp, (size_t)col);
/* Copy bytes after the changed character(s). */
p = newp + col;
memmove(p + newlen, oldp + col + oldlen,
(size_t)(linelen - col - oldlen));
/* Insert or overwrite the new character. */
memmove(p, buf, charlen);
i = charlen;
/* Fill with spaces when necessary. */
while (i < newlen)
p[i++] = ' ';
/* Replace the line in the buffer. */
ml_replace(lnum, newp, FALSE);
/* mark the buffer as changed and prepare for displaying */
changed_bytes(lnum, col);
/*
* If we're in Insert or Replace mode and 'showmatch' is set, then briefly
* show the match for right parens and braces.
*/
if (p_sm && (State & INSERT)
&& msg_silent == 0
&& !ins_compl_active()
) {
if (has_mbyte)
showmatch(mb_ptr2char(buf));
else
showmatch(c);
}
if (!p_ri || (State & REPLACE_FLAG)) {
/* Normal insert: move cursor right */
curwin->w_cursor.col += charlen;
}
/*
* TODO: should try to update w_row here, to avoid recomputing it later.
*/
}
/*
* Insert a string at the cursor position.
* Note: Does NOT handle Replace mode.
* Caller must have prepared for undo.
*/
void ins_str(char_u *s)
{
char_u *oldp, *newp;
int newlen = (int)STRLEN(s);
int oldlen;
colnr_T col;
linenr_T lnum = curwin->w_cursor.lnum;
if (virtual_active() && curwin->w_cursor.coladd > 0)
coladvance_force(getviscol());
col = curwin->w_cursor.col;
oldp = ml_get(lnum);
oldlen = (int)STRLEN(oldp);
newp = (char_u *) xmalloc((size_t)(oldlen + newlen + 1));
if (col > 0)
memmove(newp, oldp, (size_t)col);
memmove(newp + col, s, (size_t)newlen);
memmove(newp + col + newlen, oldp + col, (size_t)(oldlen - col + 1));
ml_replace(lnum, newp, FALSE);
changed_bytes(lnum, col);
curwin->w_cursor.col += newlen;
}
/*
* Delete one character under the cursor.
* If "fixpos" is TRUE, don't leave the cursor on the NUL after the line.
* Caller must have prepared for undo.
*
* return FAIL for failure, OK otherwise
*/
int del_char(int fixpos)
{
if (has_mbyte) {
/* Make sure the cursor is at the start of a character. */
mb_adjust_cursor();
if (*get_cursor_pos_ptr() == NUL)
return FAIL;
return del_chars(1L, fixpos);
}
return del_bytes(1L, fixpos, TRUE);
}
/*
* Like del_bytes(), but delete characters instead of bytes.
*/
int del_chars(long count, int fixpos)
{
long bytes = 0;
long i;
char_u *p;
int l;
p = get_cursor_pos_ptr();
for (i = 0; i < count && *p != NUL; ++i) {
l = (*mb_ptr2len)(p);
bytes += l;
p += l;
}
return del_bytes(bytes, fixpos, TRUE);
}
/*
* Delete "count" bytes under the cursor.
* If "fixpos" is TRUE, don't leave the cursor on the NUL after the line.
* Caller must have prepared for undo.
*
* return FAIL for failure, OK otherwise
*/
int
del_bytes (
long count,
int fixpos_arg,
int use_delcombine /* 'delcombine' option applies */
)
{
char_u *oldp, *newp;
colnr_T oldlen;
linenr_T lnum = curwin->w_cursor.lnum;
colnr_T col = curwin->w_cursor.col;
int was_alloced;
long movelen;
int fixpos = fixpos_arg;
oldp = ml_get(lnum);
oldlen = (int)STRLEN(oldp);
/*
* Can't do anything when the cursor is on the NUL after the line.
*/
if (col >= oldlen)
return FAIL;
/* If 'delcombine' is set and deleting (less than) one character, only
* delete the last combining character. */
if (p_deco && use_delcombine && enc_utf8
&& utfc_ptr2len(oldp + col) >= count) {
int cc[MAX_MCO];
int n;
(void)utfc_ptr2char(oldp + col, cc);
if (cc[0] != NUL) {
/* Find the last composing char, there can be several. */
n = col;
do {
col = n;
count = utf_ptr2len(oldp + n);
n += count;
} while (UTF_COMPOSINGLIKE(oldp + col, oldp + n));
fixpos = 0;
}
}
/*
* When count is too big, reduce it.
*/
movelen = (long)oldlen - (long)col - count + 1; /* includes trailing NUL */
if (movelen <= 1) {
/*
* If we just took off the last character of a non-blank line, and
* fixpos is TRUE, we don't want to end up positioned at the NUL,
* unless "restart_edit" is set or 'virtualedit' contains "onemore".
*/
if (col > 0 && fixpos && restart_edit == 0
&& (ve_flags & VE_ONEMORE) == 0
) {
--curwin->w_cursor.col;
curwin->w_cursor.coladd = 0;
if (has_mbyte)
curwin->w_cursor.col -=
(*mb_head_off)(oldp, oldp + curwin->w_cursor.col);
}
count = oldlen - col;
movelen = 1;
}
/*
* If the old line has been allocated the deletion can be done in the
* existing line. Otherwise a new line has to be allocated.
*/
was_alloced = ml_line_alloced(); /* check if oldp was allocated */
if (was_alloced)
newp = oldp; /* use same allocated memory */
else { /* need to allocate a new line */
newp = xmalloc(oldlen + 1 - count);
memmove(newp, oldp, (size_t)col);
}
memmove(newp + col, oldp + col + count, (size_t)movelen);
if (!was_alloced)
ml_replace(lnum, newp, FALSE);
/* mark the buffer as changed and prepare for displaying */
changed_bytes(lnum, curwin->w_cursor.col);
return OK;
}
/*
* Delete from cursor to end of line.
* Caller must have prepared for undo.
*/
void
truncate_line (
int fixpos /* if TRUE fix the cursor position when done */
)
{
char_u *newp;
linenr_T lnum = curwin->w_cursor.lnum;
colnr_T col = curwin->w_cursor.col;
if (col == 0)
newp = vim_strsave((char_u *)"");
else
newp = vim_strnsave(ml_get(lnum), col);
ml_replace(lnum, newp, FALSE);
/* mark the buffer as changed and prepare for displaying */
changed_bytes(lnum, curwin->w_cursor.col);
/*
* If "fixpos" is TRUE we don't want to end up positioned at the NUL.
*/
if (fixpos && curwin->w_cursor.col > 0)
--curwin->w_cursor.col;
}
/*
* Delete "nlines" lines at the cursor.
* Saves the lines for undo first if "undo" is TRUE.
*/
void
del_lines (
long nlines, /* number of lines to delete */
int undo /* if TRUE, prepare for undo */
)
{
long n;
linenr_T first = curwin->w_cursor.lnum;
if (nlines <= 0)
return;
/* save the deleted lines for undo */
if (undo && u_savedel(first, nlines) == FAIL)
return;
for (n = 0; n < nlines; ) {
if (curbuf->b_ml.ml_flags & ML_EMPTY) /* nothing to delete */
break;
ml_delete(first, TRUE);
++n;
/* If we delete the last line in the file, stop */
if (first > curbuf->b_ml.ml_line_count)
break;
}
/* Correct the cursor position before calling deleted_lines_mark(), it may
* trigger a callback to display the cursor. */
curwin->w_cursor.col = 0;
check_cursor_lnum();
/* adjust marks, mark the buffer as changed and prepare for displaying */
deleted_lines_mark(first, n);
}
int gchar_pos(pos_T *pos)
{
char_u *ptr = ml_get_pos(pos);
if (has_mbyte)
return (*mb_ptr2char)(ptr);
return (int)*ptr;
}
/*
* Skip to next part of an option argument: Skip space and comma.
*/
char_u *skip_to_option_part(char_u *p)
{
if (*p == ',')
++p;
while (*p == ' ')
++p;
return p;
}
/*
* Call this function when something in the current buffer is changed.
*
* Most often called through changed_bytes() and changed_lines(), which also
* mark the area of the display to be redrawn.
*
* Careful: may trigger autocommands that reload the buffer.
*/
void changed(void)
{
if (!curbuf->b_changed) {
int save_msg_scroll = msg_scroll;
/* Give a warning about changing a read-only file. This may also
* check-out the file, thus change "curbuf"! */
change_warning(0);
/* Create a swap file if that is wanted.
* Don't do this for "nofile" and "nowrite" buffer types. */
if (curbuf->b_may_swap
&& !bt_dontwrite(curbuf)
) {
ml_open_file(curbuf);
/* The ml_open_file() can cause an ATTENTION message.
* Wait two seconds, to make sure the user reads this unexpected
* message. Since we could be anywhere, call wait_return() now,
* and don't let the emsg() set msg_scroll. */
if (need_wait_return && emsg_silent == 0) {
out_flush();
ui_delay(2000L, TRUE);
wait_return(TRUE);
msg_scroll = save_msg_scroll;
}
}
changed_int();
}
++curbuf->b_changedtick;
}
/*
* Internal part of changed(), no user interaction.
*/
void changed_int(void)
{
curbuf->b_changed = TRUE;
ml_setflags(curbuf);
check_status(curbuf);
redraw_tabline = TRUE;
need_maketitle = TRUE; /* set window title later */
}
/*
* Changed bytes within a single line for the current buffer.
* - marks the windows on this buffer to be redisplayed
* - marks the buffer changed by calling changed()
* - invalidates cached values
* Careful: may trigger autocommands that reload the buffer.
*/
void changed_bytes(linenr_T lnum, colnr_T col)
{
changedOneline(curbuf, lnum);
changed_common(lnum, col, lnum + 1, 0L);
/* Diff highlighting in other diff windows may need to be updated too. */
if (curwin->w_p_diff) {
win_T *wp;
linenr_T wlnum;
for (wp = firstwin; wp != NULL; wp = wp->w_next)
if (wp->w_p_diff && wp != curwin) {
redraw_win_later(wp, VALID);
wlnum = diff_lnum_win(lnum, wp);
if (wlnum > 0)
changedOneline(wp->w_buffer, wlnum);
}
}
}
static void changedOneline(buf_T *buf, linenr_T lnum)
{
if (buf->b_mod_set) {
/* find the maximum area that must be redisplayed */
if (lnum < buf->b_mod_top)
buf->b_mod_top = lnum;
else if (lnum >= buf->b_mod_bot)
buf->b_mod_bot = lnum + 1;
} else {
/* set the area that must be redisplayed to one line */
buf->b_mod_set = TRUE;
buf->b_mod_top = lnum;
buf->b_mod_bot = lnum + 1;
buf->b_mod_xlines = 0;
}
}
/*
* Appended "count" lines below line "lnum" in the current buffer.
* Must be called AFTER the change and after mark_adjust().
* Takes care of marking the buffer to be redrawn and sets the changed flag.
*/
void appended_lines(linenr_T lnum, long count)
{
changed_lines(lnum + 1, 0, lnum + 1, count);
}
/*
* Like appended_lines(), but adjust marks first.
*/
void appended_lines_mark(linenr_T lnum, long count)
{
mark_adjust(lnum + 1, (linenr_T)MAXLNUM, count, 0L);
changed_lines(lnum + 1, 0, lnum + 1, count);
}
/*
* Deleted "count" lines at line "lnum" in the current buffer.
* Must be called AFTER the change and after mark_adjust().
* Takes care of marking the buffer to be redrawn and sets the changed flag.
*/
void deleted_lines(linenr_T lnum, long count)
{
changed_lines(lnum, 0, lnum + count, -count);
}
/*
* Like deleted_lines(), but adjust marks first.
* Make sure the cursor is on a valid line before calling, a GUI callback may
* be triggered to display the cursor.
*/
void deleted_lines_mark(linenr_T lnum, long count)
{
mark_adjust(lnum, (linenr_T)(lnum + count - 1), (long)MAXLNUM, -count);
changed_lines(lnum, 0, lnum + count, -count);
}
/*
* Changed lines for the current buffer.
* Must be called AFTER the change and after mark_adjust().
* - mark the buffer changed by calling changed()
* - mark the windows on this buffer to be redisplayed
* - invalidate cached values
* "lnum" is the first line that needs displaying, "lnume" the first line
* below the changed lines (BEFORE the change).
* When only inserting lines, "lnum" and "lnume" are equal.
* Takes care of calling changed() and updating b_mod_*.
* Careful: may trigger autocommands that reload the buffer.
*/
void
changed_lines (
linenr_T lnum, /* first line with change */
colnr_T col, /* column in first line with change */
linenr_T lnume, /* line below last changed line */
long xtra /* number of extra lines (negative when deleting) */
)
{
changed_lines_buf(curbuf, lnum, lnume, xtra);
if (xtra == 0 && curwin->w_p_diff) {
/* When the number of lines doesn't change then mark_adjust() isn't
* called and other diff buffers still need to be marked for
* displaying. */
win_T *wp;
linenr_T wlnum;
for (wp = firstwin; wp != NULL; wp = wp->w_next)
if (wp->w_p_diff && wp != curwin) {
redraw_win_later(wp, VALID);
wlnum = diff_lnum_win(lnum, wp);
if (wlnum > 0)
changed_lines_buf(wp->w_buffer, wlnum,
lnume - lnum + wlnum, 0L);
}
}
changed_common(lnum, col, lnume, xtra);
}
static void
changed_lines_buf (
buf_T *buf,
linenr_T lnum, /* first line with change */
linenr_T lnume, /* line below last changed line */
long xtra /* number of extra lines (negative when deleting) */
)
{
if (buf->b_mod_set) {
/* find the maximum area that must be redisplayed */
if (lnum < buf->b_mod_top)
buf->b_mod_top = lnum;
if (lnum < buf->b_mod_bot) {
/* adjust old bot position for xtra lines */
buf->b_mod_bot += xtra;
if (buf->b_mod_bot < lnum)
buf->b_mod_bot = lnum;
}
if (lnume + xtra > buf->b_mod_bot)
buf->b_mod_bot = lnume + xtra;
buf->b_mod_xlines += xtra;
} else {
/* set the area that must be redisplayed */
buf->b_mod_set = TRUE;
buf->b_mod_top = lnum;
buf->b_mod_bot = lnume + xtra;
buf->b_mod_xlines = xtra;
}
}
/*
* Common code for when a change is was made.
* See changed_lines() for the arguments.
* Careful: may trigger autocommands that reload the buffer.
*/
static void changed_common(linenr_T lnum, colnr_T col, linenr_T lnume, long xtra)
{
win_T *wp;
tabpage_T *tp;
int i;
int cols;
pos_T *p;
int add;
/* mark the buffer as modified */
changed();
/* set the '. mark */
if (!cmdmod.keepjumps) {
curbuf->b_last_change.lnum = lnum;
curbuf->b_last_change.col = col;
/* Create a new entry if a new undo-able change was started or we
* don't have an entry yet. */
if (curbuf->b_new_change || curbuf->b_changelistlen == 0) {
if (curbuf->b_changelistlen == 0)
add = TRUE;
else {
/* Don't create a new entry when the line number is the same
* as the last one and the column is not too far away. Avoids
* creating many entries for typing "xxxxx". */
p = &curbuf->b_changelist[curbuf->b_changelistlen - 1];
if (p->lnum != lnum)
add = TRUE;
else {
cols = comp_textwidth(FALSE);
if (cols == 0)
cols = 79;
add = (p->col + cols < col || col + cols < p->col);
}
}
if (add) {
/* This is the first of a new sequence of undo-able changes
* and it's at some distance of the last change. Use a new
* position in the changelist. */
curbuf->b_new_change = FALSE;
if (curbuf->b_changelistlen == JUMPLISTSIZE) {
/* changelist is full: remove oldest entry */
curbuf->b_changelistlen = JUMPLISTSIZE - 1;
memmove(curbuf->b_changelist, curbuf->b_changelist + 1,
sizeof(pos_T) * (JUMPLISTSIZE - 1));
FOR_ALL_TAB_WINDOWS(tp, wp)
{
/* Correct position in changelist for other windows on
* this buffer. */
if (wp->w_buffer == curbuf && wp->w_changelistidx > 0)
--wp->w_changelistidx;
}
}
FOR_ALL_TAB_WINDOWS(tp, wp)
{
/* For other windows, if the position in the changelist is
* at the end it stays at the end. */
if (wp->w_buffer == curbuf
&& wp->w_changelistidx == curbuf->b_changelistlen)
++wp->w_changelistidx;
}
++curbuf->b_changelistlen;
}
}
curbuf->b_changelist[curbuf->b_changelistlen - 1] =
curbuf->b_last_change;
/* The current window is always after the last change, so that "g,"
* takes you back to it. */
curwin->w_changelistidx = curbuf->b_changelistlen;
}
FOR_ALL_TAB_WINDOWS(tp, wp)
{
if (wp->w_buffer == curbuf) {
/* Mark this window to be redrawn later. */
if (wp->w_redr_type < VALID)
wp->w_redr_type = VALID;
/* Check if a change in the buffer has invalidated the cached
* values for the cursor. */
/*
* Update the folds for this window. Can't postpone this, because
* a following operator might work on the whole fold: ">>dd".
*/
foldUpdate(wp, lnum, lnume + xtra - 1);
/* The change may cause lines above or below the change to become
* included in a fold. Set lnum/lnume to the first/last line that
* might be displayed differently.
* Set w_cline_folded here as an efficient way to update it when
* inserting lines just above a closed fold. */
i = hasFoldingWin(wp, lnum, &lnum, NULL, FALSE, NULL);
if (wp->w_cursor.lnum == lnum)
wp->w_cline_folded = i;
i = hasFoldingWin(wp, lnume, NULL, &lnume, FALSE, NULL);
if (wp->w_cursor.lnum == lnume)
wp->w_cline_folded = i;
/* If the changed line is in a range of previously folded lines,
* compare with the first line in that range. */
if (wp->w_cursor.lnum <= lnum) {
i = find_wl_entry(wp, lnum);
if (i >= 0 && wp->w_cursor.lnum > wp->w_lines[i].wl_lnum)
changed_line_abv_curs_win(wp);
}
if (wp->w_cursor.lnum > lnum)
changed_line_abv_curs_win(wp);
else if (wp->w_cursor.lnum == lnum && wp->w_cursor.col >= col)
changed_cline_bef_curs_win(wp);
if (wp->w_botline >= lnum) {
/* Assume that botline doesn't change (inserted lines make
* other lines scroll down below botline). */
approximate_botline_win(wp);
}
/* Check if any w_lines[] entries have become invalid.
* For entries below the change: Correct the lnums for
* inserted/deleted lines. Makes it possible to stop displaying
* after the change. */
for (i = 0; i < wp->w_lines_valid; ++i)
if (wp->w_lines[i].wl_valid) {
if (wp->w_lines[i].wl_lnum >= lnum) {
if (wp->w_lines[i].wl_lnum < lnume) {
/* line included in change */
wp->w_lines[i].wl_valid = FALSE;
} else if (xtra != 0) {
/* line below change */
wp->w_lines[i].wl_lnum += xtra;
wp->w_lines[i].wl_lastlnum += xtra;
}
} else if (wp->w_lines[i].wl_lastlnum >= lnum) {
/* change somewhere inside this range of folded lines,
* may need to be redrawn */
wp->w_lines[i].wl_valid = FALSE;
}
}
/* Take care of side effects for setting w_topline when folds have
* changed. Esp. when the buffer was changed in another window. */
if (hasAnyFolding(wp))
set_topline(wp, wp->w_topline);
// relative numbering may require updating more
if (wp->w_p_rnu) {
redraw_win_later(wp, SOME_VALID);
}
}
}
/* Call update_screen() later, which checks out what needs to be redrawn,
* since it notices b_mod_set and then uses b_mod_*. */
if (must_redraw < VALID)
must_redraw = VALID;
/* when the cursor line is changed always trigger CursorMoved */
if (lnum <= curwin->w_cursor.lnum
&& lnume + (xtra < 0 ? -xtra : xtra) > curwin->w_cursor.lnum)
last_cursormoved.lnum = 0;
}
/*
* unchanged() is called when the changed flag must be reset for buffer 'buf'
*/
void
unchanged (
buf_T *buf,
int ff /* also reset 'fileformat' */
)
{
if (buf->b_changed || (ff && file_ff_differs(buf, FALSE))) {
buf->b_changed = 0;
ml_setflags(buf);
if (ff)
save_file_ff(buf);
check_status(buf);
redraw_tabline = TRUE;
need_maketitle = TRUE; /* set window title later */
}
++buf->b_changedtick;
}
/*
* check_status: called when the status bars for the buffer 'buf'
* need to be updated
*/
void check_status(buf_T *buf)
{
win_T *wp;
for (wp = firstwin; wp != NULL; wp = wp->w_next)
if (wp->w_buffer == buf && wp->w_status_height) {
wp->w_redr_status = TRUE;
if (must_redraw < VALID)
must_redraw = VALID;
}
}
/*
* If the file is readonly, give a warning message with the first change.
* Don't do this for autocommands.
* Don't use emsg(), because it flushes the macro buffer.
* If we have undone all changes b_changed will be FALSE, but "b_did_warn"
* will be TRUE.
* Careful: may trigger autocommands that reload the buffer.
*/
void
change_warning (
int col /* column for message; non-zero when in insert
mode and 'showmode' is on */
)
{
static char *w_readonly = N_("W10: Warning: Changing a readonly file");
if (curbuf->b_did_warn == FALSE
&& curbufIsChanged() == 0
&& !autocmd_busy
&& curbuf->b_p_ro) {
++curbuf_lock;
apply_autocmds(EVENT_FILECHANGEDRO, NULL, NULL, FALSE, curbuf);
--curbuf_lock;
if (!curbuf->b_p_ro)
return;
/*
* Do what msg() does, but with a column offset if the warning should
* be after the mode message.
*/
msg_start();
if (msg_row == Rows - 1)
msg_col = col;
msg_source(hl_attr(HLF_W));
MSG_PUTS_ATTR(_(w_readonly), hl_attr(HLF_W) | MSG_HIST);
set_vim_var_string(VV_WARNINGMSG, (char_u *)_(w_readonly), -1);
msg_clr_eos();
(void)msg_end();
if (msg_silent == 0 && !silent_mode) {
out_flush();
ui_delay(1000L, TRUE); /* give the user time to think about it */
}
curbuf->b_did_warn = TRUE;
redraw_cmdline = FALSE; /* don't redraw and erase the message */
if (msg_row < Rows - 1)
showmode();
}
}
/*
* Ask for a reply from the user, a 'y' or a 'n'.
* No other characters are accepted, the message is repeated until a valid
* reply is entered or CTRL-C is hit.
* If direct is TRUE, don't use vgetc() but ui_inchar(), don't get characters
* from any buffers but directly from the user.
*
* return the 'y' or 'n'
*/
int ask_yesno(char_u *str, int direct)
{
int r = ' ';
int save_State = State;
if (exiting) /* put terminal in raw mode for this question */
settmode(TMODE_RAW);
++no_wait_return;
#ifdef USE_ON_FLY_SCROLL
dont_scroll = TRUE; /* disallow scrolling here */
#endif
State = CONFIRM; /* mouse behaves like with :confirm */
setmouse(); /* disables mouse for xterm */
++no_mapping;
++allow_keys; /* no mapping here, but recognize keys */
while (r != 'y' && r != 'n') {
/* same highlighting as for wait_return */
smsg_attr(hl_attr(HLF_R), (char_u *)"%s (y/n)?", str);
if (direct)
r = get_keystroke();
else
r = plain_vgetc();
if (r == Ctrl_C || r == ESC)
r = 'n';
msg_putchar(r); /* show what you typed */
out_flush();
}
--no_wait_return;
State = save_State;
setmouse();
--no_mapping;
--allow_keys;
return r;
}
/*
* Return TRUE if "c" is a mouse key.
*/
int is_mouse_key(int c)
{
return c == K_LEFTMOUSE
|| c == K_LEFTMOUSE_NM
|| c == K_LEFTDRAG
|| c == K_LEFTRELEASE
|| c == K_LEFTRELEASE_NM
|| c == K_MIDDLEMOUSE
|| c == K_MIDDLEDRAG
|| c == K_MIDDLERELEASE
|| c == K_RIGHTMOUSE
|| c == K_RIGHTDRAG
|| c == K_RIGHTRELEASE
|| c == K_MOUSEDOWN
|| c == K_MOUSEUP
|| c == K_MOUSELEFT
|| c == K_MOUSERIGHT
|| c == K_X1MOUSE
|| c == K_X1DRAG
|| c == K_X1RELEASE
|| c == K_X2MOUSE
|| c == K_X2DRAG
|| c == K_X2RELEASE;
}
/*
* Get a key stroke directly from the user.
* Ignores mouse clicks and scrollbar events, except a click for the left
* button (used at the more prompt).
* Doesn't use vgetc(), because it syncs undo and eats mapped characters.
* Disadvantage: typeahead is ignored.
* Translates the interrupt character for unix to ESC.
*/
int get_keystroke(void)
{
char_u *buf = NULL;
int buflen = 150;
int maxlen;
int len = 0;
int n;
int save_mapped_ctrl_c = mapped_ctrl_c;
int waited = 0;
mapped_ctrl_c = FALSE; /* mappings are not used here */
for (;; ) {
cursor_on();
out_flush();
/* Leave some room for check_termcode() to insert a key code into (max
* 5 chars plus NUL). And fix_input_buffer() can triple the number of
* bytes. */
maxlen = (buflen - 6 - len) / 3;
if (buf == NULL)
buf = xmalloc(buflen);
else if (maxlen < 10) {
/* Need some more space. This might happen when receiving a long
* escape sequence. */
buflen += 100;
buf = xrealloc(buf, buflen);
maxlen = (buflen - 6 - len) / 3;
}
/* First time: blocking wait. Second time: wait up to 100ms for a
* terminal code to complete. */
n = ui_inchar(buf + len, maxlen, len == 0 ? -1L : 100L, 0);
if (n > 0) {
/* Replace zero and CSI by a special key code. */
n = fix_input_buffer(buf + len, n, FALSE);
len += n;
waited = 0;
} else if (len > 0)
++waited; /* keep track of the waiting time */
/* Incomplete termcode and not timed out yet: get more characters */
if ((n = check_termcode(1, buf, buflen, &len)) < 0
&& (!p_ttimeout || waited * 100L < (p_ttm < 0 ? p_tm : p_ttm)))
continue;
if (n == KEYLEN_REMOVED) { /* key code removed */
if (must_redraw != 0 && !need_wait_return && (State & CMDLINE) == 0) {
/* Redrawing was postponed, do it now. */
update_screen(0);
setcursor(); /* put cursor back where it belongs */
}
continue;
}
if (n > 0) /* found a termcode: adjust length */
len = n;
if (len == 0) /* nothing typed yet */
continue;
/* Handle modifier and/or special key code. */
n = buf[0];
if (n == K_SPECIAL) {
n = TO_SPECIAL(buf[1], buf[2]);
if (buf[1] == KS_MODIFIER
|| n == K_IGNORE
|| (is_mouse_key(n) && n != K_LEFTMOUSE)
) {
if (buf[1] == KS_MODIFIER)
mod_mask = buf[2];
len -= 3;
if (len > 0)
memmove(buf, buf + 3, (size_t)len);
continue;
}
break;
}
if (has_mbyte) {
if (MB_BYTE2LEN(n) > len)
continue; /* more bytes to get */
buf[len >= buflen ? buflen - 1 : len] = NUL;
n = (*mb_ptr2char)(buf);
}
#ifdef UNIX
if (n == intr_char)
n = ESC;
#endif
break;
}
free(buf);
mapped_ctrl_c = save_mapped_ctrl_c;
return n;
}
/*
* Get a number from the user.
* When "mouse_used" is not NULL allow using the mouse.
*/
int
get_number (
int colon, /* allow colon to abort */
int *mouse_used
)
{
int n = 0;
int c;
int typed = 0;
if (mouse_used != NULL)
*mouse_used = FALSE;
/* When not printing messages, the user won't know what to type, return a
* zero (as if CR was hit). */
if (msg_silent != 0)
return 0;
#ifdef USE_ON_FLY_SCROLL
dont_scroll = TRUE; /* disallow scrolling here */
#endif
++no_mapping;
++allow_keys; /* no mapping here, but recognize keys */
for (;; ) {
windgoto(msg_row, msg_col);
c = safe_vgetc();
if (VIM_ISDIGIT(c)) {
n = n * 10 + c - '0';
msg_putchar(c);
++typed;
} else if (c == K_DEL || c == K_KDEL || c == K_BS || c == Ctrl_H) {
if (typed > 0) {
MSG_PUTS("\b \b");
--typed;
}
n /= 10;
} else if (mouse_used != NULL && c == K_LEFTMOUSE) {
*mouse_used = TRUE;
n = mouse_row + 1;
break;
} else if (n == 0 && c == ':' && colon) {
stuffcharReadbuff(':');
if (!exmode_active)
cmdline_row = msg_row;
skip_redraw = TRUE; /* skip redraw once */
do_redraw = FALSE;
break;
} else if (c == CAR || c == NL || c == Ctrl_C || c == ESC)
break;
}
--no_mapping;
--allow_keys;
return n;
}
/*
* Ask the user to enter a number.
* When "mouse_used" is not NULL allow using the mouse and in that case return
* the line number.
*/
int prompt_for_number(int *mouse_used)
{
int i;
int save_cmdline_row;
int save_State;
/* When using ":silent" assume that <CR> was entered. */
if (mouse_used != NULL)
MSG_PUTS(_("Type number and <Enter> or click with mouse (empty cancels): "));
else
MSG_PUTS(_("Type number and <Enter> (empty cancels): "));
/* Set the state such that text can be selected/copied/pasted and we still
* get mouse events. */
save_cmdline_row = cmdline_row;
cmdline_row = 0;
save_State = State;
State = CMDLINE;
i = get_number(TRUE, mouse_used);
if (KeyTyped) {
/* don't call wait_return() now */
/* msg_putchar('\n'); */
cmdline_row = msg_row - 1;
need_wait_return = FALSE;
msg_didany = FALSE;
msg_didout = FALSE;
} else
cmdline_row = save_cmdline_row;
State = save_State;
return i;
}
void msgmore(long n)
{
long pn;
if (global_busy /* no messages now, wait until global is finished */
|| !messaging()) /* 'lazyredraw' set, don't do messages now */
return;
/* We don't want to overwrite another important message, but do overwrite
* a previous "more lines" or "fewer lines" message, so that "5dd" and
* then "put" reports the last action. */
if (keep_msg != NULL && !keep_msg_more)
return;
if (n > 0)
pn = n;
else
pn = -n;
if (pn > p_report) {
if (pn == 1) {
if (n > 0)
vim_strncpy(msg_buf, (char_u *)_("1 more line"),
MSG_BUF_LEN - 1);
else
vim_strncpy(msg_buf, (char_u *)_("1 line less"),
MSG_BUF_LEN - 1);
} else {
if (n > 0)
vim_snprintf((char *)msg_buf, MSG_BUF_LEN,
_("%" PRId64 " more lines"), (int64_t)pn);
else
vim_snprintf((char *)msg_buf, MSG_BUF_LEN,
_("%" PRId64 " fewer lines"), (int64_t)pn);
}
if (got_int)
vim_strcat(msg_buf, (char_u *)_(" (Interrupted)"), MSG_BUF_LEN);
if (msg(msg_buf)) {
set_keep_msg(msg_buf, 0);
keep_msg_more = TRUE;
}
}
}
/*
* flush map and typeahead buffers and give a warning for an error
*/
void beep_flush(void)
{
if (emsg_silent == 0) {
flush_buffers(FALSE);
vim_beep();
}
}
/*
* give a warning for an error
*/
void vim_beep(void)
{
if (emsg_silent == 0) {
if (p_vb
) {
out_str(T_VB);
} else {
out_char(BELL);
}
/* When 'verbose' is set and we are sourcing a script or executing a
* function give the user a hint where the beep comes from. */
if (vim_strchr(p_debug, 'e') != NULL) {
msg_source(hl_attr(HLF_W));
msg_attr((char_u *)_("Beep!"), hl_attr(HLF_W));
}
}
}
/*
* To get the "real" home directory:
* - get value of $HOME
* For Unix:
* - go to that directory
* - do os_dirname() to get the real name of that directory.
* This also works with mounts and links.
* Don't do this for MS-DOS, it will change the "current dir" for a drive.
*/
static char_u *homedir = NULL;
void init_homedir(void)
{
char_u *var;
/* In case we are called a second time (when 'encoding' changes). */
free(homedir);
homedir = NULL;
var = (char_u *)os_getenv("HOME");
if (var != NULL && *var == NUL) /* empty is same as not set */
var = NULL;
if (var != NULL) {
#ifdef UNIX
/*
* Change to the directory and get the actual path. This resolves
* links. Don't do it when we can't return.
*/
if (os_dirname(NameBuff, MAXPATHL) == OK
&& os_chdir((char *)NameBuff) == 0) {
if (!os_chdir((char *)var) && os_dirname(IObuff, IOSIZE) == OK)
var = IObuff;
if (os_chdir((char *)NameBuff) != 0)
EMSG(_(e_prev_dir));
}
#endif
homedir = vim_strsave(var);
}
}
#if defined(EXITFREE) || defined(PROTO)
void free_homedir(void)
{
free(homedir);
}
void free_users(void)
{
ga_clear_strings(&ga_users);
}
#endif
/*
* Call expand_env() and store the result in an allocated string.
* This is not very memory efficient, this expects the result to be freed
* again soon.
*/
char_u *expand_env_save(char_u *src)
{
return expand_env_save_opt(src, FALSE);
}
/*
* Idem, but when "one" is TRUE handle the string as one file name, only
* expand "~" at the start.
*/
char_u *expand_env_save_opt(char_u *src, int one)
{
char_u *p = xmalloc(MAXPATHL);
expand_env_esc(src, p, MAXPATHL, FALSE, one, NULL);
return p;
}
/*
* Expand environment variable with path name.
* "~/" is also expanded, using $HOME. For Unix "~user/" is expanded.
* Skips over "\ ", "\~" and "\$" (not for Win32 though).
* If anything fails no expansion is done and dst equals src.
*/
void
expand_env (
char_u *src, /* input string e.g. "$HOME/vim.hlp" */
char_u *dst, /* where to put the result */
int dstlen /* maximum length of the result */
)
{
expand_env_esc(src, dst, dstlen, FALSE, FALSE, NULL);
}
void
expand_env_esc (
char_u *srcp, /* input string e.g. "$HOME/vim.hlp" */
char_u *dst, /* where to put the result */
int dstlen, /* maximum length of the result */
int esc, /* escape spaces in expanded variables */
int one, /* "srcp" is one file name */
char_u *startstr /* start again after this (can be NULL) */
)
{
char_u *src;
char_u *tail;
int c;
char_u *var;
int copy_char;
int mustfree; /* var was allocated, need to free it later */
int at_start = TRUE; /* at start of a name */
int startstr_len = 0;
if (startstr != NULL)
startstr_len = (int)STRLEN(startstr);
src = skipwhite(srcp);
--dstlen; /* leave one char space for "\," */
while (*src && dstlen > 0) {
copy_char = TRUE;
if ((*src == '$'
)
|| (*src == '~' && at_start)) {
mustfree = FALSE;
/*
* The variable name is copied into dst temporarily, because it may
* be a string in read-only memory and a NUL needs to be appended.
*/
if (*src != '~') { /* environment var */
tail = src + 1;
var = dst;
c = dstlen - 1;
#ifdef UNIX
/* Unix has ${var-name} type environment vars */
if (*tail == '{' && !vim_isIDc('{')) {
tail++; /* ignore '{' */
while (c-- > 0 && *tail && *tail != '}')
*var++ = *tail++;
} else
#endif
{
while (c-- > 0 && *tail != NUL && ((vim_isIDc(*tail))
)) {
*var++ = *tail++;
}
}
#if defined(MSWIN) || defined(UNIX)
# ifdef UNIX
if (src[1] == '{' && *tail != '}')
# else
if (*src == '%' && *tail != '%')
# endif
var = NULL;
else {
# ifdef UNIX
if (src[1] == '{')
# else
if (*src == '%')
#endif
++tail;
#endif
*var = NUL;
var = vim_getenv(dst, &mustfree);
#if defined(MSWIN) || defined(UNIX)
}
#endif
}
/* home directory */
else if ( src[1] == NUL
|| vim_ispathsep(src[1])
|| vim_strchr((char_u *)" ,\t\n", src[1]) != NULL) {
var = homedir;
tail = src + 1;
} else { /* user directory */
#if defined(UNIX)
/*
* Copy ~user to dst[], so we can put a NUL after it.
*/
tail = src;
var = dst;
c = dstlen - 1;
while ( c-- > 0
&& *tail
&& vim_isfilec(*tail)
&& !vim_ispathsep(*tail))
*var++ = *tail++;
*var = NUL;
/*
* Use os_get_user_directory() to get the user directory.
* If this function fails, the shell is used to
* expand ~user. This is slower and may fail if the shell
* does not support ~user (old versions of /bin/sh).
*/
var = (char_u *)os_get_user_directory((char *)dst + 1);
mustfree = TRUE;
if (var == NULL)
{
expand_T xpc;
ExpandInit(&xpc);
xpc.xp_context = EXPAND_FILES;
var = ExpandOne(&xpc, dst, NULL,
WILD_ADD_SLASH|WILD_SILENT, WILD_EXPAND_FREE);
mustfree = TRUE;
}
#else
/* cannot expand user's home directory, so don't try */
var = NULL;
tail = (char_u *)""; /* for gcc */
#endif /* UNIX */
}
#ifdef BACKSLASH_IN_FILENAME
/* If 'shellslash' is set change backslashes to forward slashes.
* Can't use slash_adjust(), p_ssl may be set temporarily. */
if (p_ssl && var != NULL && vim_strchr(var, '\\') != NULL) {
char_u *p = vim_strsave(var);
if (mustfree) {
free(var);
}
var = p;
mustfree = TRUE;
forward_slash(var);
}
#endif
/* If "var" contains white space, escape it with a backslash.
* Required for ":e ~/tt" when $HOME includes a space. */
if (esc && var != NULL && vim_strpbrk(var, (char_u *)" \t") != NULL) {
char_u *p = vim_strsave_escaped(var, (char_u *)" \t");
if (p != NULL) {
if (mustfree)
free(var);
var = p;
mustfree = TRUE;
}
}
if (var != NULL && *var != NUL
&& (STRLEN(var) + STRLEN(tail) + 1 < (unsigned)dstlen)) {
STRCPY(dst, var);
dstlen -= (int)STRLEN(var);
c = (int)STRLEN(var);
/* if var[] ends in a path separator and tail[] starts
* with it, skip a character */
if (*var != NUL && after_pathsep(dst, dst + c)
#if defined(BACKSLASH_IN_FILENAME)
&& dst[-1] != ':'
#endif
&& vim_ispathsep(*tail))
++tail;
dst += c;
src = tail;
copy_char = FALSE;
}
if (mustfree)
free(var);
}
if (copy_char) { /* copy at least one char */
/*
* Recognize the start of a new name, for '~'.
* Don't do this when "one" is TRUE, to avoid expanding "~" in
* ":edit foo ~ foo".
*/
at_start = FALSE;
if (src[0] == '\\' && src[1] != NUL) {
*dst++ = *src++;
--dstlen;
} else if ((src[0] == ' ' || src[0] == ',') && !one)
at_start = TRUE;
*dst++ = *src++;
--dstlen;
if (startstr != NULL && src - startstr_len >= srcp
&& STRNCMP(src - startstr_len, startstr, startstr_len) == 0)
at_start = TRUE;
}
}
*dst = NUL;
}
/*
* Vim's version of getenv().
* Special handling of $HOME, $VIM and $VIMRUNTIME.
* Also does ACP to 'enc' conversion for Win32.
* "mustfree" is set to TRUE when returned is allocated, it must be
* initialized to FALSE by the caller.
*/
char_u *vim_getenv(char_u *name, int *mustfree)
{
char_u *p;
char_u *pend;
int vimruntime;
p = (char_u *)os_getenv((char *)name);
if (p != NULL && *p == NUL) /* empty is the same as not set */
p = NULL;
if (p != NULL) {
return p;
}
vimruntime = (STRCMP(name, "VIMRUNTIME") == 0);
if (!vimruntime && STRCMP(name, "VIM") != 0)
return NULL;
/*
* When expanding $VIMRUNTIME fails, try using $VIM/vim<version> or $VIM.
* Don't do this when default_vimruntime_dir is non-empty.
*/
if (vimruntime
#ifdef HAVE_PATHDEF
&& *default_vimruntime_dir == NUL
#endif
) {
p = (char_u *)os_getenv("VIM");
if (p != NULL && *p == NUL) /* empty is the same as not set */
p = NULL;
if (p != NULL) {
p = vim_version_dir(p);
if (p != NULL)
*mustfree = TRUE;
else
p = (char_u *)os_getenv("VIM");
}
}
/*
* When expanding $VIM or $VIMRUNTIME fails, try using:
* - the directory name from 'helpfile' (unless it contains '$')
* - the executable name from argv[0]
*/
if (p == NULL) {
if (p_hf != NULL && vim_strchr(p_hf, '$') == NULL)
p = p_hf;
#ifdef USE_EXE_NAME
/*
* Use the name of the executable, obtained from argv[0].
*/
else
p = exe_name;
#endif
if (p != NULL) {
/* remove the file name */
pend = path_tail(p);
/* remove "doc/" from 'helpfile', if present */
if (p == p_hf)
pend = remove_tail(p, pend, (char_u *)"doc");
#ifdef USE_EXE_NAME
/* remove "src/" from exe_name, if present */
if (p == exe_name)
pend = remove_tail(p, pend, (char_u *)"src");
#endif
/* for $VIM, remove "runtime/" or "vim54/", if present */
if (!vimruntime) {
pend = remove_tail(p, pend, (char_u *)RUNTIME_DIRNAME);
pend = remove_tail(p, pend, (char_u *)VIM_VERSION_NODOT);
}
/* remove trailing path separator */
/* With MacOS path (with colons) the final colon is required */
/* to avoid confusion between absolute and relative path */
if (pend > p && after_pathsep(p, pend))
--pend;
/* check that the result is a directory name */
p = vim_strnsave(p, (int)(pend - p));
if (!os_isdir(p)) {
free(p);
p = NULL;
} else {
#ifdef USE_EXE_NAME
/* may add "/vim54" or "/runtime" if it exists */
if (vimruntime && (pend = vim_version_dir(p)) != NULL) {
free(p);
p = pend;
}
#endif
*mustfree = TRUE;
}
}
}
#ifdef HAVE_PATHDEF
/* When there is a pathdef.c file we can use default_vim_dir and
* default_vimruntime_dir */
if (p == NULL) {
/* Only use default_vimruntime_dir when it is not empty */
if (vimruntime && *default_vimruntime_dir != NUL) {
p = default_vimruntime_dir;
*mustfree = FALSE;
} else if (*default_vim_dir != NUL) {
if (vimruntime && (p = vim_version_dir(default_vim_dir)) != NULL)
*mustfree = TRUE;
else {
p = default_vim_dir;
*mustfree = FALSE;
}
}
}
#endif
/*
* Set the environment variable, so that the new value can be found fast
* next time, and others can also use it (e.g. Perl).
*/
if (p != NULL) {
if (vimruntime) {
vim_setenv((char_u *)"VIMRUNTIME", p);
didset_vimruntime = TRUE;
} else {
vim_setenv((char_u *)"VIM", p);
didset_vim = TRUE;
}
}
return p;
}
/*
* Check if the directory "vimdir/<version>" or "vimdir/runtime" exists.
* Return NULL if not, return its name in allocated memory otherwise.
*/
static char_u *vim_version_dir(char_u *vimdir)
{
char_u *p;
if (vimdir == NULL || *vimdir == NUL)
return NULL;
p = concat_fnames(vimdir, (char_u *)VIM_VERSION_NODOT, TRUE);
if (os_isdir(p))
return p;
free(p);
p = concat_fnames(vimdir, (char_u *)RUNTIME_DIRNAME, TRUE);
if (os_isdir(p))
return p;
free(p);
return NULL;
}
/*
* If the string between "p" and "pend" ends in "name/", return "pend" minus
* the length of "name/". Otherwise return "pend".
*/
static char_u *remove_tail(char_u *p, char_u *pend, char_u *name)
{
int len = (int)STRLEN(name) + 1;
char_u *newend = pend - len;
if (newend >= p
&& fnamencmp(newend, name, len - 1) == 0
&& (newend == p || after_pathsep(p, newend)))
return newend;
return pend;
}
/*
* Our portable version of setenv.
*/
void vim_setenv(char_u *name, char_u *val)
{
os_setenv((char *)name, (char *)val, 1);
/*
* When setting $VIMRUNTIME adjust the directory to find message
* translations to $VIMRUNTIME/lang.
*/
if (*val != NUL && STRICMP(name, "VIMRUNTIME") == 0) {
char_u *buf = concat_str(val, (char_u *)"/lang");
bindtextdomain(VIMPACKAGE, (char *)buf);
free(buf);
}
}
/*
* Function given to ExpandGeneric() to obtain an environment variable name.
*/
char_u *get_env_name(expand_T *xp, int idx)
{
# define ENVNAMELEN 100
// this static buffer is needed to avoid a memory leak in ExpandGeneric
static char_u name[ENVNAMELEN];
char *envname = os_getenvname_at_index(idx);
if (envname) {
vim_strncpy(name, (char_u *)envname, ENVNAMELEN - 1);
free(envname);
return name;
} else {
return NULL;
}
}
/*
* Find all user names for user completion.
* Done only once and then cached.
*/
static void init_users(void)
{
static int lazy_init_done = FALSE;
if (lazy_init_done) {
return;
}
lazy_init_done = TRUE;
os_get_usernames(&ga_users);
}
/*
* Function given to ExpandGeneric() to obtain an user names.
*/
char_u *get_users(expand_T *xp, int idx)
{
init_users();
if (idx < ga_users.ga_len)
return ((char_u **)ga_users.ga_data)[idx];
return NULL;
}
/*
* Check whether name matches a user name. Return:
* 0 if name does not match any user name.
* 1 if name partially matches the beginning of a user name.
* 2 is name fully matches a user name.
*/
int match_user(char_u *name)
{
int n = (int)STRLEN(name);
int result = 0;
init_users();
for (int i = 0; i < ga_users.ga_len; i++) {
if (STRCMP(((char_u **)ga_users.ga_data)[i], name) == 0)
return 2; /* full match */
if (STRNCMP(((char_u **)ga_users.ga_data)[i], name, n) == 0)
result = 1; /* partial match */
}
return result;
}
/*
* Replace home directory by "~" in each space or comma separated file name in
* 'src'.
* If anything fails (except when out of space) dst equals src.
*/
void
home_replace (
buf_T *buf, /* when not NULL, check for help files */
char_u *src, /* input file name */
char_u *dst, /* where to put the result */
int dstlen, /* maximum length of the result */
int one /* if TRUE, only replace one file name, include
spaces and commas in the file name. */
)
{
size_t dirlen = 0, envlen = 0;
size_t len;
char_u *homedir_env, *homedir_env_orig;
char_u *p;
if (src == NULL) {
*dst = NUL;
return;
}
/*
* If the file is a help file, remove the path completely.
*/
if (buf != NULL && buf->b_help) {
STRCPY(dst, path_tail(src));
return;
}
/*
* We check both the value of the $HOME environment variable and the
* "real" home directory.
*/
if (homedir != NULL)
dirlen = STRLEN(homedir);
homedir_env_orig = homedir_env = (char_u *)os_getenv("HOME");
/* Empty is the same as not set. */
if (homedir_env != NULL && *homedir_env == NUL)
homedir_env = NULL;
if (homedir_env != NULL && vim_strchr(homedir_env, '~') != NULL) {
int usedlen = 0;
int flen;
char_u *fbuf = NULL;
flen = (int)STRLEN(homedir_env);
(void)modify_fname((char_u *)":p", &usedlen,
&homedir_env, &fbuf, &flen);
flen = (int)STRLEN(homedir_env);
if (flen > 0 && vim_ispathsep(homedir_env[flen - 1]))
/* Remove the trailing / that is added to a directory. */
homedir_env[flen - 1] = NUL;
}
if (homedir_env != NULL)
envlen = STRLEN(homedir_env);
if (!one)
src = skipwhite(src);
while (*src && dstlen > 0) {
/*
* Here we are at the beginning of a file name.
* First, check to see if the beginning of the file name matches
* $HOME or the "real" home directory. Check that there is a '/'
* after the match (so that if e.g. the file is "/home/pieter/bla",
* and the home directory is "/home/piet", the file does not end up
* as "~er/bla" (which would seem to indicate the file "bla" in user
* er's home directory)).
*/
p = homedir;
len = dirlen;
for (;; ) {
if ( len
&& fnamencmp(src, p, len) == 0
&& (vim_ispathsep(src[len])
|| (!one && (src[len] == ',' || src[len] == ' '))
|| src[len] == NUL)) {
src += len;
if (--dstlen > 0)
*dst++ = '~';
/*
* If it's just the home directory, add "/".
*/
if (!vim_ispathsep(src[0]) && --dstlen > 0)
*dst++ = '/';
break;
}
if (p == homedir_env)
break;
p = homedir_env;
len = envlen;
}
/* if (!one) skip to separator: space or comma */
while (*src && (one || (*src != ',' && *src != ' ')) && --dstlen > 0)
*dst++ = *src++;
/* skip separator */
while ((*src == ' ' || *src == ',') && --dstlen > 0)
*dst++ = *src++;
}
/* if (dstlen == 0) out of space, what to do??? */
*dst = NUL;
if (homedir_env != homedir_env_orig)
free(homedir_env);
}
/*
* Like home_replace, store the replaced string in allocated memory.
* When something fails, NULL is returned.
*/
char_u *
home_replace_save (
buf_T *buf, /* when not NULL, check for help files */
char_u *src /* input file name */
)
{
char_u *dst;
size_t len = 3; /* space for "~/" and trailing NUL */
if (src != NULL) /* just in case */
len += STRLEN(src);
dst = xmalloc(len);
home_replace(buf, src, dst, (int)len, TRUE);
return dst;
}
void prepare_to_exit(void)
{
#if defined(SIGHUP) && defined(SIG_IGN)
/* Ignore SIGHUP, because a dropped connection causes a read error, which
* makes Vim exit and then handling SIGHUP causes various reentrance
* problems. */
signal(SIGHUP, SIG_IGN);
#endif
{
windgoto((int)Rows - 1, 0);
/*
* Switch terminal mode back now, so messages end up on the "normal"
* screen (if there are two screens).
*/
settmode(TMODE_COOK);
stoptermcap();
out_flush();
}
}
/*
* Preserve files and exit.
* When called IObuff must contain a message.
* NOTE: This may be called from deathtrap() in a signal handler, avoid unsafe
* functions, such as allocating memory.
*/
void preserve_exit(void)
{
buf_T *buf;
// Prevent repeated calls into this method.
if (really_exiting) {
exit(2);
}
really_exiting = TRUE;
prepare_to_exit();
out_str(IObuff);
screen_start(); /* don't know where cursor is now */
out_flush();
ml_close_notmod(); /* close all not-modified buffers */
for (buf = firstbuf; buf != NULL; buf = buf->b_next) {
if (buf->b_ml.ml_mfp != NULL && buf->b_ml.ml_mfp->mf_fname != NULL) {
OUT_STR("Vim: preserving files...\n");
screen_start(); /* don't know where cursor is now */
out_flush();
ml_sync_all(FALSE, FALSE); /* preserve all swap files */
break;
}
}
ml_close_all(FALSE); /* close all memfiles, without deleting */
OUT_STR("Vim: Finished.\n");
getout(1);
}
/*
* Check for CTRL-C pressed, but only once in a while.
* Should be used instead of ui_breakcheck() for functions that check for
* each line in the file. Calling ui_breakcheck() each time takes too much
* time, because it can be a system call.
*/
#ifndef BREAKCHECK_SKIP
# define BREAKCHECK_SKIP 32
#endif
static int breakcheck_count = 0;
void line_breakcheck(void)
{
if (++breakcheck_count >= BREAKCHECK_SKIP) {
breakcheck_count = 0;
ui_breakcheck();
}
}
/*
* Like line_breakcheck() but check 10 times less often.
*/
void fast_breakcheck(void)
{
if (++breakcheck_count >= BREAKCHECK_SKIP * 10) {
breakcheck_count = 0;
ui_breakcheck();
}
}
#ifndef SEEK_SET
# define SEEK_SET 0
#endif
#ifndef SEEK_END
# define SEEK_END 2
#endif
/*
* Get the stdout of an external command.
* Returns an allocated string, or NULL for error.
*/
char_u *
get_cmd_output (
char_u *cmd,
char_u *infile, /* optional input file name */
int flags /* can be SHELL_SILENT */
)
{
char_u *tempname;
char_u *command;
char_u *buffer = NULL;
int len;
int i = 0;
FILE *fd;
if (check_restricted() || check_secure())
return NULL;
/* get a name for the temp file */
if ((tempname = vim_tempname('o')) == NULL) {
EMSG(_(e_notmp));
return NULL;
}
/* Add the redirection stuff */
command = make_filter_cmd(cmd, infile, tempname);
/*
* Call the shell to execute the command (errors are ignored).
* Don't check timestamps here.
*/
++no_check_timestamps;
call_shell(command, kShellOptDoOut | kShellOptExpand | flags, NULL);
--no_check_timestamps;
free(command);
/*
* read the names from the file into memory
*/
fd = mch_fopen((char *)tempname, READBIN);
if (fd == NULL) {
EMSG2(_(e_notopen), tempname);
goto done;
}
fseek(fd, 0L, SEEK_END);
len = ftell(fd); /* get size of temp file */
fseek(fd, 0L, SEEK_SET);
buffer = xmalloc(len + 1);
i = (int)fread((char *)buffer, (size_t)1, (size_t)len, fd);
fclose(fd);
os_remove((char *)tempname);
if (buffer == NULL)
goto done;
if (i != len) {
EMSG2(_(e_notread), tempname);
free(buffer);
buffer = NULL;
} else {
/* Change NUL into SOH, otherwise the string is truncated. */
for (i = 0; i < len; ++i)
if (buffer[i] == NUL)
buffer[i] = 1;
buffer[len] = NUL; /* make sure the buffer is terminated */
}
done:
free(tempname);
return buffer;
}
/*
* Free the list of files returned by expand_wildcards() or other expansion
* functions.
*/
void FreeWild(int count, char_u **files)
{
if (count <= 0 || files == NULL)
return;
while (count--)
free(files[count]);
free(files);
}
/*
* Return TRUE when need to go to Insert mode because of 'insertmode'.
* Don't do this when still processing a command or a mapping.
* Don't do this when inside a ":normal" command.
*/
int goto_im(void)
{
return p_im && stuff_empty() && typebuf_typed();
}
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