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/* vi:set ts=8 sts=4 sw=4:
*
* 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 "vim.h"
#include "version.h"
static char_u *vim_version_dir __ARGS((char_u *vimdir));
static char_u *remove_tail __ARGS((char_u *p, char_u *pend, char_u *name));
static int copy_indent __ARGS((int size, char_u *src));
/*
* Count the size (in window cells) of the indent in the current line.
*/
int
get_indent()
{
return get_indent_str(ml_get_curline(), (int)curbuf->b_p_ts);
}
/*
* Count the size (in window cells) of the indent in line "lnum".
*/
int
get_indent_lnum(lnum)
linenr_T lnum;
{
return get_indent_str(ml_get(lnum), (int)curbuf->b_p_ts);
}
#if defined(FEAT_FOLDING) || defined(PROTO)
/*
* Count the size (in window cells) of the indent in line "lnum" of buffer
* "buf".
*/
int
get_indent_buf(buf, lnum)
buf_T *buf;
linenr_T lnum;
{
return get_indent_str(ml_get_buf(buf, lnum, FALSE), (int)buf->b_p_ts);
}
#endif
/*
* count the size (in window cells) of the indent in line "ptr", with
* 'tabstop' at "ts"
*/
int
get_indent_str(ptr, ts)
char_u *ptr;
int ts;
{
int count = 0;
for ( ; *ptr; ++ptr)
{
if (*ptr == TAB) /* count a tab for what it is worth */
count += ts - (count % ts);
else if (*ptr == ' ')
++count; /* count a space for one */
else
break;
}
return count;
}
/*
* Set the indent of the current line.
* Leaves the cursor on the first non-blank in the line.
* Caller must take care of undo.
* "flags":
* SIN_CHANGED: call changed_bytes() if the line was changed.
* SIN_INSERT: insert the indent in front of the line.
* SIN_UNDO: save line for undo before changing it.
* Returns TRUE if the line was changed.
*/
int
set_indent(size, flags)
int size; /* measured in spaces */
int flags;
{
char_u *p;
char_u *newline;
char_u *oldline;
char_u *s;
int todo;
int ind_len; /* measured in characters */
int line_len;
int doit = FALSE;
int ind_done = 0; /* measured in spaces */
int tab_pad;
int retval = FALSE;
int orig_char_len = -1; /* number of initial whitespace chars when
'et' and 'pi' are both set */
/*
* First check if there is anything to do and compute the number of
* characters needed for the indent.
*/
todo = size;
ind_len = 0;
p = oldline = ml_get_curline();
/* Calculate the buffer size for the new indent, and check to see if it
* isn't already set */
/* if 'expandtab' isn't set: use TABs; if both 'expandtab' and
* 'preserveindent' are set count the number of characters at the
* beginning of the line to be copied */
if (!curbuf->b_p_et || (!(flags & SIN_INSERT) && curbuf->b_p_pi))
{
/* If 'preserveindent' is set then reuse as much as possible of
* the existing indent structure for the new indent */
if (!(flags & SIN_INSERT) && curbuf->b_p_pi)
{
ind_done = 0;
/* count as many characters as we can use */
while (todo > 0 && vim_iswhite(*p))
{
if (*p == TAB)
{
tab_pad = (int)curbuf->b_p_ts
- (ind_done % (int)curbuf->b_p_ts);
/* stop if this tab will overshoot the target */
if (todo < tab_pad)
break;
todo -= tab_pad;
++ind_len;
ind_done += tab_pad;
}
else
{
--todo;
++ind_len;
++ind_done;
}
++p;
}
/* Set initial number of whitespace chars to copy if we are
* preserving indent but expandtab is set */
if (curbuf->b_p_et)
orig_char_len = ind_len;
/* Fill to next tabstop with a tab, if possible */
tab_pad = (int)curbuf->b_p_ts - (ind_done % (int)curbuf->b_p_ts);
if (todo >= tab_pad && orig_char_len == -1)
{
doit = TRUE;
todo -= tab_pad;
++ind_len;
/* ind_done += tab_pad; */
}
}
/* count tabs required for indent */
while (todo >= (int)curbuf->b_p_ts)
{
if (*p != TAB)
doit = TRUE;
else
++p;
todo -= (int)curbuf->b_p_ts;
++ind_len;
/* ind_done += (int)curbuf->b_p_ts; */
}
}
/* count spaces required for indent */
while (todo > 0)
{
if (*p != ' ')
doit = TRUE;
else
++p;
--todo;
++ind_len;
/* ++ind_done; */
}
/* Return if the indent is OK already. */
if (!doit && !vim_iswhite(*p) && !(flags & SIN_INSERT))
return FALSE;
/* Allocate memory for the new line. */
if (flags & SIN_INSERT)
p = oldline;
else
p = skipwhite(p);
line_len = (int)STRLEN(p) + 1;
/* If 'preserveindent' and 'expandtab' are both set keep the original
* characters and allocate accordingly. We will fill the rest with spaces
* after the if (!curbuf->b_p_et) below. */
if (orig_char_len != -1)
{
newline = alloc(orig_char_len + size - ind_done + line_len);
if (newline == NULL)
return FALSE;
todo = size - ind_done;
ind_len = orig_char_len + todo; /* Set total length of indent in
* characters, which may have been
* undercounted until now */
p = oldline;
s = newline;
while (orig_char_len > 0)
{
*s++ = *p++;
orig_char_len--;
}
/* Skip over any additional white space (useful when newindent is less
* than old) */
while (vim_iswhite(*p))
++p;
}
else
{
todo = size;
newline = alloc(ind_len + line_len);
if (newline == NULL)
return FALSE;
s = newline;
}
/* Put the characters in the new line. */
/* if 'expandtab' isn't set: use TABs */
if (!curbuf->b_p_et)
{
/* If 'preserveindent' is set then reuse as much as possible of
* the existing indent structure for the new indent */
if (!(flags & SIN_INSERT) && curbuf->b_p_pi)
{
p = oldline;
ind_done = 0;
while (todo > 0 && vim_iswhite(*p))
{
if (*p == TAB)
{
tab_pad = (int)curbuf->b_p_ts
- (ind_done % (int)curbuf->b_p_ts);
/* stop if this tab will overshoot the target */
if (todo < tab_pad)
break;
todo -= tab_pad;
ind_done += tab_pad;
}
else
{
--todo;
++ind_done;
}
*s++ = *p++;
}
/* Fill to next tabstop with a tab, if possible */
tab_pad = (int)curbuf->b_p_ts - (ind_done % (int)curbuf->b_p_ts);
if (todo >= tab_pad)
{
*s++ = TAB;
todo -= tab_pad;
}
p = skipwhite(p);
}
while (todo >= (int)curbuf->b_p_ts)
{
*s++ = TAB;
todo -= (int)curbuf->b_p_ts;
}
}
while (todo > 0)
{
*s++ = ' ';
--todo;
}
mch_memmove(s, p, (size_t)line_len);
/* Replace the line (unless undo fails). */
if (!(flags & SIN_UNDO) || u_savesub(curwin->w_cursor.lnum) == OK)
{
ml_replace(curwin->w_cursor.lnum, newline, FALSE);
if (flags & SIN_CHANGED)
changed_bytes(curwin->w_cursor.lnum, 0);
/* Correct saved cursor position if it's after the indent. */
if (saved_cursor.lnum == curwin->w_cursor.lnum
&& saved_cursor.col >= (colnr_T)(p - oldline))
saved_cursor.col += ind_len - (colnr_T)(p - oldline);
retval = TRUE;
}
else
vim_free(newline);
curwin->w_cursor.col = ind_len;
return retval;
}
/*
* Copy the indent from ptr to the current line (and fill to size)
* Leaves the cursor on the first non-blank in the line.
* Returns TRUE if the line was changed.
*/
static int
copy_indent(size, src)
int size;
char_u *src;
{
char_u *p = NULL;
char_u *line = NULL;
char_u *s;
int todo;
int ind_len;
int line_len = 0;
int tab_pad;
int ind_done;
int round;
/* Round 1: compute the number of characters needed for the indent
* Round 2: copy the characters. */
for (round = 1; round <= 2; ++round)
{
todo = size;
ind_len = 0;
ind_done = 0;
s = src;
/* Count/copy the usable portion of the source line */
while (todo > 0 && vim_iswhite(*s))
{
if (*s == TAB)
{
tab_pad = (int)curbuf->b_p_ts
- (ind_done % (int)curbuf->b_p_ts);
/* Stop if this tab will overshoot the target */
if (todo < tab_pad)
break;
todo -= tab_pad;
ind_done += tab_pad;
}
else
{
--todo;
++ind_done;
}
++ind_len;
if (p != NULL)
*p++ = *s;
++s;
}
/* Fill to next tabstop with a tab, if possible */
tab_pad = (int)curbuf->b_p_ts - (ind_done % (int)curbuf->b_p_ts);
if (todo >= tab_pad && !curbuf->b_p_et)
{
todo -= tab_pad;
++ind_len;
if (p != NULL)
*p++ = TAB;
}
/* Add tabs required for indent */
while (todo >= (int)curbuf->b_p_ts && !curbuf->b_p_et)
{
todo -= (int)curbuf->b_p_ts;
++ind_len;
if (p != NULL)
*p++ = TAB;
}
/* Count/add spaces required for indent */
while (todo > 0)
{
--todo;
++ind_len;
if (p != NULL)
*p++ = ' ';
}
if (p == NULL)
{
/* Allocate memory for the result: the copied indent, new indent
* and the rest of the line. */
line_len = (int)STRLEN(ml_get_curline()) + 1;
line = alloc(ind_len + line_len);
if (line == NULL)
return FALSE;
p = line;
}
}
/* Append the original line */
mch_memmove(p, ml_get_curline(), (size_t)line_len);
/* Replace the line */
ml_replace(curwin->w_cursor.lnum, line, FALSE);
/* Put the cursor after the indent. */
curwin->w_cursor.col = ind_len;
return TRUE;
}
/*
* Return the indent of the current line after a number. Return -1 if no
* number was found. Used for 'n' in 'formatoptions': numbered list.
* Since a pattern is used it can actually handle more than numbers.
*/
int
get_number_indent(lnum)
linenr_T lnum;
{
colnr_T col;
pos_T pos;
regmatch_T regmatch;
int lead_len = 0; /* length of comment leader */
if (lnum > curbuf->b_ml.ml_line_count)
return -1;
pos.lnum = 0;
#ifdef FEAT_COMMENTS
/* In format_lines() (i.e. not insert mode), fo+=q is needed too... */
if ((State & INSERT) || has_format_option(FO_Q_COMS))
lead_len = get_leader_len(ml_get(lnum), NULL, FALSE, TRUE);
#endif
regmatch.regprog = vim_regcomp(curbuf->b_p_flp, RE_MAGIC);
if (regmatch.regprog != NULL)
{
regmatch.rm_ic = FALSE;
/* vim_regexec() expects a pointer to a line. This lets us
* start matching for the flp beyond any comment leader... */
if (vim_regexec(&regmatch, ml_get(lnum) + lead_len, (colnr_T)0))
{
pos.lnum = lnum;
pos.col = (colnr_T)(*regmatch.endp - ml_get(lnum));
#ifdef FEAT_VIRTUALEDIT
pos.coladd = 0;
#endif
}
}
vim_free(regmatch.regprog);
if (pos.lnum == 0 || *ml_get_pos(&pos) == NUL)
return -1;
getvcol(curwin, &pos, &col, NULL, NULL);
return (int)col;
}
#if defined(FEAT_CINDENT) || defined(FEAT_SMARTINDENT)
static int cin_is_cinword __ARGS((char_u *line));
/*
* Return TRUE if the string "line" starts with a word from 'cinwords'.
*/
static int
cin_is_cinword(line)
char_u *line;
{
char_u *cinw;
char_u *cinw_buf;
int cinw_len;
int retval = FALSE;
int len;
cinw_len = (int)STRLEN(curbuf->b_p_cinw) + 1;
cinw_buf = alloc((unsigned)cinw_len);
if (cinw_buf != NULL)
{
line = skipwhite(line);
for (cinw = curbuf->b_p_cinw; *cinw; )
{
len = copy_option_part(&cinw, cinw_buf, cinw_len, ",");
if (STRNCMP(line, cinw_buf, len) == 0
&& (!vim_iswordc(line[len]) || !vim_iswordc(line[len - 1])))
{
retval = TRUE;
break;
}
}
vim_free(cinw_buf);
}
return retval;
}
#endif
/*
* 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(dir, flags, second_line_indent)
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 */
#ifdef FEAT_COMMENTS
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 */
#endif
char_u *allocated = NULL; /* allocated memory */
#if defined(FEAT_SMARTINDENT) || defined(FEAT_VREPLACE) || defined(FEAT_LISP) \
|| defined(FEAT_CINDENT) || defined(FEAT_COMMENTS)
char_u *p;
#endif
int saved_char = NUL; /* init for GCC */
#if defined(FEAT_SMARTINDENT) || defined(FEAT_COMMENTS)
pos_T *pos;
#endif
#ifdef FEAT_SMARTINDENT
int do_si = (!p_paste && curbuf->b_p_si
# ifdef FEAT_CINDENT
&& !curbuf->b_p_cin
# endif
);
int no_si = FALSE; /* reset did_si afterwards */
int first_char = NUL; /* init for GCC */
#endif
#if defined(FEAT_VREPLACE) && (defined(FEAT_LISP) || defined(FEAT_CINDENT))
int vreplace_mode;
#endif
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(ml_get_curline());
if (saved_line == NULL) /* out of memory! */
return FALSE;
#ifdef FEAT_VREPLACE
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 *)"");
if (next_line == NULL) /* out of memory! */
goto theend;
/*
* 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)
{
#ifdef FEAT_MBYTE
if (has_mbyte)
p += replace_push_mb(p);
else
#endif
replace_push(*p++);
}
saved_line[curwin->w_cursor.col] = NUL;
}
#endif
if ((State & INSERT)
#ifdef FEAT_VREPLACE
&& !(State & VREPLACE_FLAG)
#endif
)
{
p_extra = saved_line + curwin->w_cursor.col;
#ifdef FEAT_SMARTINDENT
if (do_si) /* need first char after new line break */
{
p = skipwhite(p_extra);
first_char = *p;
}
#endif
#ifdef FEAT_COMMENTS
extra_len = (int)STRLEN(p_extra);
#endif
saved_char = *p_extra;
*p_extra = NUL;
}
u_clearline(); /* cannot do "U" command when adding lines */
#ifdef FEAT_SMARTINDENT
did_si = FALSE;
#endif
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
#ifdef FEAT_SMARTINDENT
|| do_si
#endif
)
{
/*
* 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 */
#ifdef FEAT_SMARTINDENT
/*
* 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;
# ifdef FEAT_COMMENTS
if (flags & OPENLINE_DO_COM)
lead_len = get_leader_len(ptr, NULL, FALSE, TRUE);
else
lead_len = 0;
# endif
if (dir == FORWARD)
{
/*
* Skip preprocessor directives, unless they are
* recognised as comments.
*/
if (
# ifdef FEAT_COMMENTS
lead_len == 0 &&
# endif
ptr[0] == '#')
{
while (ptr[0] == '#' && curwin->w_cursor.lnum > 1)
ptr = ml_get(--curwin->w_cursor.lnum);
newindent = get_indent();
}
# ifdef FEAT_COMMENTS
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 */
# endif
{
/* 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 = ml_get_curline();
}
}
/*
* 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 (
# ifdef FEAT_COMMENTS
lead_len == 0 &&
# endif
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;
#endif /* FEAT_SMARTINDENT */
did_ai = TRUE;
}
#ifdef FEAT_COMMENTS
/*
* 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 = alloc(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 */
if (leader == NULL)
lead_len = 0;
else
{
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;
#ifdef FEAT_MBYTE
/* 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)
mch_memmove(endp + l, endp,
(size_t)((leader + lead_len) - endp));
lead_len += l;
}
#else
if (p < leader + lead_repl_len)
p = leader;
else
p -= lead_repl_len;
#endif
mch_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)
{
#ifdef FEAT_MBYTE
int l = mb_head_off(leader, p);
if (l > 1)
{
p -= l;
if (ptr2cells(p) > 1)
{
p[1] = ' ';
--l;
}
mch_memmove(p + 1, p + l + 1,
(size_t)((leader + lead_len) - (p + l + 1)));
lead_len -= l;
*p = ' ';
}
else
#endif
if (!vim_iswhite(*p))
*p = ' ';
}
}
else /* left adjusted leader */
{
p = skipwhite(leader);
#ifdef FEAT_MBYTE
/* 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)
{
mch_memmove(p + lead_repl_len, p + i,
(size_t)(lead_len - i - (p - leader)));
lead_len += lead_repl_len - i;
}
}
#endif
mch_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;
mch_memmove(p, p + 1,
(leader + lead_len) - p);
}
else
{
#ifdef FEAT_MBYTE
int l = (*mb_ptr2len)(p);
if (l > 1)
{
if (ptr2cells(p) > 1)
{
/* Replace a double-wide char with
* two spaces */
--l;
*p++ = ' ';
}
mch_memmove(p + 1, p + l,
(leader + lead_len) - p);
lead_len -= l - 1;
}
#endif
*p = ' ';
}
}
*p = NUL;
}
/* Recompute the indent, it may have changed. */
if (curbuf->b_p_ai
#ifdef FEAT_SMARTINDENT
|| do_si
#endif
)
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
#ifdef FEAT_SMARTINDENT
|| did_si
#endif
)
{
while (lead_len && vim_iswhite(*leader))
{
--lead_len;
--newcol;
++leader;
}
}
}
#ifdef FEAT_SMARTINDENT
did_si = can_si = FALSE;
#endif
}
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
#ifdef FEAT_SMARTINDENT
|| do_si
#endif
))
{
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;
}
}
}
#endif
/* (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')
#ifdef FEAT_MBYTE
&& (!enc_utf8
|| !utf_iscomposing(utf_ptr2char(p_extra + 1)))
#endif
)
{
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 */
#ifdef FEAT_COMMENTS
/* 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, " ");
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 */
#endif
old_cursor = curwin->w_cursor;
if (dir == BACKWARD)
--curwin->w_cursor.lnum;
#ifdef FEAT_VREPLACE
if (!(State & VREPLACE_FLAG) || old_cursor.lnum >= orig_line_count)
#endif
{
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;
}
#ifdef FEAT_VREPLACE
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;
}
#endif
if (newindent
#ifdef FEAT_SMARTINDENT
|| did_si
#endif
)
{
++curwin->w_cursor.lnum;
#ifdef FEAT_SMARTINDENT
if (did_si)
{
if (p_sr)
newindent -= newindent % (int)curbuf->b_p_sw;
newindent += (int)curbuf->b_p_sw;
}
#endif
/* 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;
#ifdef FEAT_SMARTINDENT
if (no_si)
did_si = FALSE;
#endif
}
#ifdef FEAT_COMMENTS
/*
* 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);
#endif
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;
#ifdef FEAT_VIRTUALEDIT
curwin->w_cursor.coladd = 0;
#endif
#if defined(FEAT_VREPLACE) && (defined(FEAT_LISP) || defined(FEAT_CINDENT))
/*
* 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;
#endif
#ifdef FEAT_LISP
/*
* May do lisp indenting.
*/
if (!p_paste
# ifdef FEAT_COMMENTS
&& leader == NULL
# endif
&& curbuf->b_p_lisp
&& curbuf->b_p_ai)
{
fixthisline(get_lisp_indent);
p = ml_get_curline();
ai_col = (colnr_T)(skipwhite(p) - p);
}
#endif
#ifdef FEAT_CINDENT
/*
* May do indenting after opening a new line.
*/
if (!p_paste
&& (curbuf->b_p_cin
# ifdef FEAT_EVAL
|| *curbuf->b_p_inde != NUL
# endif
)
&& in_cinkeys(dir == FORWARD
? KEY_OPEN_FORW
: KEY_OPEN_BACK, ' ', linewhite(curwin->w_cursor.lnum)))
{
do_c_expr_indent();
p = ml_get_curline();
ai_col = (colnr_T)(skipwhite(p) - p);
}
#endif
#if defined(FEAT_VREPLACE) && (defined(FEAT_LISP) || defined(FEAT_CINDENT))
if (vreplace_mode != 0)
State = vreplace_mode;
#endif
#ifdef FEAT_VREPLACE
/*
* 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(ml_get_curline());
if (p_extra == NULL)
goto theend;
/* Put back original line */
ml_replace(curwin->w_cursor.lnum, next_line, FALSE);
/* Insert new stuff into line again */
curwin->w_cursor.col = 0;
#ifdef FEAT_VIRTUALEDIT
curwin->w_cursor.coladd = 0;
#endif
ins_bytes(p_extra); /* will call changed_bytes() */
vim_free(p_extra);
next_line = NULL;
}
#endif
retval = TRUE; /* success! */
theend:
curbuf->b_p_pi = saved_pi;
vim_free(saved_line);
vim_free(next_line);
vim_free(allocated);
return retval;
}
#if defined(FEAT_COMMENTS) || defined(PROTO)
/*
* get_leader_len() returns the length 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(line, flags, backward, include_space)
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 shite 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(line, flags)
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;
}
#endif
/*
* Return the number of window lines occupied by buffer line "lnum".
*/
int
plines(lnum)
linenr_T lnum;
{
return plines_win(curwin, lnum, TRUE);
}
int
plines_win(wp, lnum, winheight)
win_T *wp;
linenr_T lnum;
int winheight; /* when TRUE limit to window height */
{
#if defined(FEAT_DIFF) || defined(PROTO)
/* 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(lnum)
linenr_T lnum;
{
return plines_win_nofill(curwin, lnum, TRUE);
}
int
plines_win_nofill(wp, lnum, winheight)
win_T *wp;
linenr_T lnum;
int winheight; /* when TRUE limit to window height */
{
#endif
int lines;
if (!wp->w_p_wrap)
return 1;
#ifdef FEAT_VERTSPLIT
if (wp->w_width == 0)
return 1;
#endif
#ifdef FEAT_FOLDING
/* 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;
#endif
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(wp, lnum)
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 = W_WIDTH(wp) - 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(wp, lnum, column)
win_T *wp;
linenr_T lnum;
long column;
{
long col;
char_u *s;
int lines = 0;
int width;
#ifdef FEAT_DIFF
/* Check for filler lines above this buffer line. When folded the result
* is one line anyway. */
lines = diff_check_fill(wp, lnum);
#endif
if (!wp->w_p_wrap)
return lines + 1;
#ifdef FEAT_VERTSPLIT
if (wp->w_width == 0)
return lines + 1;
#endif
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 = W_WIDTH(wp) - 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(wp, first, last)
win_T *wp;
linenr_T first, last;
{
int count = 0;
while (first <= last)
{
#ifdef FEAT_FOLDING
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
#endif
{
#ifdef FEAT_DIFF
if (first == wp->w_topline)
count += plines_win_nofill(wp, first, TRUE) + wp->w_topfill;
else
#endif
count += plines_win(wp, first, TRUE);
++first;
}
}
return (count);
}
#if defined(FEAT_VREPLACE) || defined(FEAT_INS_EXPAND) || defined(PROTO)
/*
* Insert string "p" at the cursor position. Stops at a NUL byte.
* Handles Replace mode and multi-byte characters.
*/
void
ins_bytes(p)
char_u *p;
{
ins_bytes_len(p, (int)STRLEN(p));
}
#endif
#if defined(FEAT_VREPLACE) || defined(FEAT_INS_EXPAND) \
|| defined(FEAT_COMMENTS) || defined(FEAT_MBYTE) || defined(PROTO)
/*
* Insert string "p" with length "len" at the cursor position.
* Handles Replace mode and multi-byte characters.
*/
void
ins_bytes_len(p, len)
char_u *p;
int len;
{
int i;
# ifdef FEAT_MBYTE
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
# endif
for (i = 0; i < len; ++i)
ins_char(p[i]);
}
#endif
/*
* 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(c)
int c;
{
#if defined(FEAT_MBYTE) || defined(PROTO)
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(buf, charlen)
char_u *buf;
int charlen;
{
int c = buf[0];
#endif
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;
#ifdef FEAT_VIRTUALEDIT
/* Break tabs if needed. */
if (virtual_active() && curwin->w_cursor.coladd > 0)
coladvance_force(getviscol());
#endif
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;
#ifdef FEAT_MBYTE
newlen = charlen;
#else
newlen = 1;
#endif
if (State & REPLACE_FLAG)
{
#ifdef FEAT_VREPLACE
if (State & VREPLACE_FLAG)
{
colnr_T new_vcol = 0; /* init for GCC */
colnr_T vcol;
int old_list;
#ifndef FEAT_MBYTE
char_u buf[2];
#endif
/*
* 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);
#ifndef FEAT_MBYTE
buf[0] = c;
buf[1] = NUL;
#endif
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;
#ifdef FEAT_MBYTE
oldlen += (*mb_ptr2len)(oldp + col + oldlen);
#else
++oldlen;
#endif
/* Deleted a bit too much, insert spaces. */
if (vcol > new_vcol)
newlen += vcol - new_vcol;
}
curwin->w_p_list = old_list;
}
else
#endif
if (oldp[col] != NUL)
{
/* normal replace */
#ifdef FEAT_MBYTE
oldlen = (*mb_ptr2len)(oldp + col);
#else
oldlen = 1;
#endif
}
/* 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)
{
#ifdef FEAT_MBYTE
if (has_mbyte)
i += replace_push_mb(oldp + col + i) - 1;
else
#endif
replace_push(oldp[col + i]);
}
}
newp = alloc_check((unsigned)(linelen + newlen - oldlen));
if (newp == NULL)
return;
/* Copy bytes before the cursor. */
if (col > 0)
mch_memmove(newp, oldp, (size_t)col);
/* Copy bytes after the changed character(s). */
p = newp + col;
mch_memmove(p + newlen, oldp + col + oldlen,
(size_t)(linelen - col - oldlen));
/* Insert or overwrite the new character. */
#ifdef FEAT_MBYTE
mch_memmove(p, buf, charlen);
i = charlen;
#else
*p = c;
i = 1;
#endif
/* 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
#ifdef FEAT_MBYTE
&& charlen == 1
#endif
#ifdef FEAT_INS_EXPAND
&& !ins_compl_active()
#endif
)
showmatch(c);
#ifdef FEAT_RIGHTLEFT
if (!p_ri || (State & REPLACE_FLAG))
#endif
{
/* Normal insert: move cursor right */
#ifdef FEAT_MBYTE
curwin->w_cursor.col += charlen;
#else
++curwin->w_cursor.col;
#endif
}
/*
* 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(s)
char_u *s;
{
char_u *oldp, *newp;
int newlen = (int)STRLEN(s);
int oldlen;
colnr_T col;
linenr_T lnum = curwin->w_cursor.lnum;
#ifdef FEAT_VIRTUALEDIT
if (virtual_active() && curwin->w_cursor.coladd > 0)
coladvance_force(getviscol());
#endif
col = curwin->w_cursor.col;
oldp = ml_get(lnum);
oldlen = (int)STRLEN(oldp);
newp = alloc_check((unsigned)(oldlen + newlen + 1));
if (newp == NULL)
return;
if (col > 0)
mch_memmove(newp, oldp, (size_t)col);
mch_memmove(newp + col, s, (size_t)newlen);
mch_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(fixpos)
int fixpos;
{
#ifdef FEAT_MBYTE
if (has_mbyte)
{
/* Make sure the cursor is at the start of a character. */
mb_adjust_cursor();
if (*ml_get_cursor() == NUL)
return FAIL;
return del_chars(1L, fixpos);
}
#endif
return del_bytes(1L, fixpos, TRUE);
}
#if defined(FEAT_MBYTE) || defined(PROTO)
/*
* Like del_bytes(), but delete characters instead of bytes.
*/
int
del_chars(count, fixpos)
long count;
int fixpos;
{
long bytes = 0;
long i;
char_u *p;
int l;
p = ml_get_cursor();
for (i = 0; i < count && *p != NUL; ++i)
{
l = (*mb_ptr2len)(p);
bytes += l;
p += l;
}
return del_bytes(bytes, fixpos, TRUE);
}
#endif
/*
* 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(count, fixpos_arg, use_delcombine)
long count;
int fixpos_arg;
int use_delcombine UNUSED; /* '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;
#ifdef FEAT_MBYTE
/* 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;
}
}
#endif
/*
* 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
#ifdef FEAT_VIRTUALEDIT
&& (ve_flags & VE_ONEMORE) == 0
#endif
)
{
--curwin->w_cursor.col;
#ifdef FEAT_VIRTUALEDIT
curwin->w_cursor.coladd = 0;
#endif
#ifdef FEAT_MBYTE
if (has_mbyte)
curwin->w_cursor.col -=
(*mb_head_off)(oldp, oldp + curwin->w_cursor.col);
#endif
}
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
* Can't do this when using Netbeans, because we would need to invoke
* netbeans_removed(), which deallocates the line. Let ml_replace() take
* care of notifying Netbeans.
*/
#ifdef FEAT_NETBEANS_INTG
if (netbeans_active())
was_alloced = FALSE;
else
#endif
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 = alloc((unsigned)(oldlen + 1 - count));
if (newp == NULL)
return FAIL;
mch_memmove(newp, oldp, (size_t)col);
}
mch_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.
*
* return FAIL for failure, OK otherwise
*/
int
truncate_line(fixpos)
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);
if (newp == NULL)
return FAIL;
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;
return OK;
}
/*
* Delete "nlines" lines at the cursor.
* Saves the lines for undo first if "undo" is TRUE.
*/
void
del_lines(nlines, undo)
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)
pos_T *pos;
{
char_u *ptr = ml_get_pos(pos);
#ifdef FEAT_MBYTE
if (has_mbyte)
return (*mb_ptr2char)(ptr);
#endif
return (int)*ptr;
}
int
gchar_cursor()
{
#ifdef FEAT_MBYTE
if (has_mbyte)
return (*mb_ptr2char)(ml_get_cursor());
#endif
return (int)*ml_get_cursor();
}
/*
* Write a character at the current cursor position.
* It is directly written into the block.
*/
void
pchar_cursor(c)
int c;
{
*(ml_get_buf(curbuf, curwin->w_cursor.lnum, TRUE)
+ curwin->w_cursor.col) = c;
}
/*
* When extra == 0: Return TRUE if the cursor is before or on the first
* non-blank in the line.
* When extra == 1: Return TRUE if the cursor is before the first non-blank in
* the line.
*/
int
inindent(extra)
int extra;
{
char_u *ptr;
colnr_T col;
for (col = 0, ptr = ml_get_curline(); vim_iswhite(*ptr); ++col)
++ptr;
if (col >= curwin->w_cursor.col + extra)
return TRUE;
else
return FALSE;
}
/*
* Skip to next part of an option argument: Skip space and comma.
*/
char_u *
skip_to_option_part(p)
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()
{
#if defined(FEAT_XIM) && (defined(FEAT_GUI_GTK) || defined(FEAT_GUI_MACVIM))
/* The text of the preediting area is inserted, but this doesn't
* mean a change of the buffer yet. That is delayed until the
* text is committed. (this means preedit becomes empty) */
if (im_is_preediting() && !xim_changed_while_preediting)
return;
xim_changed_while_preediting = FALSE;
#endif
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
#ifdef FEAT_QUICKFIX
&& !bt_dontwrite(curbuf)
#endif
)
{
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()
{
curbuf->b_changed = TRUE;
ml_setflags(curbuf);
#ifdef FEAT_WINDOWS
check_status(curbuf);
redraw_tabline = TRUE;
#endif
#ifdef FEAT_TITLE
need_maketitle = TRUE; /* set window title later */
#endif
}
static void changedOneline __ARGS((buf_T *buf, linenr_T lnum));
static void changed_lines_buf __ARGS((buf_T *buf, linenr_T lnum, linenr_T lnume, long xtra));
static void changed_common __ARGS((linenr_T lnum, colnr_T col, linenr_T lnume, long xtra));
/*
* 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(lnum, col)
linenr_T lnum;
colnr_T col;
{
changedOneline(curbuf, lnum);
changed_common(lnum, col, lnum + 1, 0L);
#ifdef FEAT_DIFF
/* 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);
}
}
#endif
}
static void
changedOneline(buf, lnum)
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(lnum, count)
linenr_T lnum;
long count;
{
changed_lines(lnum + 1, 0, lnum + 1, count);
}
/*
* Like appended_lines(), but adjust marks first.
*/
void
appended_lines_mark(lnum, count)
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(lnum, count)
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(lnum, count)
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(lnum, col, lnume, xtra)
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);
#ifdef FEAT_DIFF
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);
}
}
#endif
changed_common(lnum, col, lnume, xtra);
}
static void
changed_lines_buf(buf, lnum, lnume, xtra)
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(lnum, col, lnume, xtra)
linenr_T lnum;
colnr_T col;
linenr_T lnume;
long xtra;
{
win_T *wp;
#ifdef FEAT_WINDOWS
tabpage_T *tp;
#endif
int i;
#ifdef FEAT_JUMPLIST
int cols;
pos_T *p;
int add;
#endif
/* mark the buffer as modified */
changed();
/* set the '. mark */
if (!cmdmod.keepjumps)
{
curbuf->b_last_change.lnum = lnum;
curbuf->b_last_change.col = col;
#ifdef FEAT_JUMPLIST
/* 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;
mch_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;
#endif
}
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. */
#ifdef FEAT_FOLDING
/*
* 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);
}
#endif
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;
#ifdef FEAT_FOLDING
wp->w_lines[i].wl_lastlnum += xtra;
#endif
}
}
#ifdef FEAT_FOLDING
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;
}
#endif
}
#ifdef FEAT_FOLDING
/* 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);
#endif
}
}
/* 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;
#ifdef FEAT_AUTOCMD
/* 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;
#endif
}
/*
* unchanged() is called when the changed flag must be reset for buffer 'buf'
*/
void
unchanged(buf, ff)
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);
#ifdef FEAT_WINDOWS
check_status(buf);
redraw_tabline = TRUE;
#endif
#ifdef FEAT_TITLE
need_maketitle = TRUE; /* set window title later */
#endif
}
++buf->b_changedtick;
#ifdef FEAT_NETBEANS_INTG
netbeans_unmodified(buf);
#endif
}
#if defined(FEAT_WINDOWS) || defined(PROTO)
/*
* check_status: called when the status bars for the buffer 'buf'
* need to be updated
*/
void
check_status(buf)
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;
}
}
#endif
/*
* 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(col)
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
#ifdef FEAT_AUTOCMD
&& !autocmd_busy
#endif
&& curbuf->b_p_ro)
{
#ifdef FEAT_AUTOCMD
++curbuf_lock;
apply_autocmds(EVENT_FILECHANGEDRO, NULL, NULL, FALSE, curbuf);
--curbuf_lock;
if (!curbuf->b_p_ro)
return;
#endif
/*
* 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);
#ifdef FEAT_EVAL
set_vim_var_string(VV_WARNINGMSG, (char_u *)_(w_readonly), -1);
#endif
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(str, direct)
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 */
#ifdef FEAT_MOUSE
setmouse(); /* disables mouse for xterm */
#endif
++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;
#ifdef FEAT_MOUSE
setmouse();
#endif
--no_mapping;
--allow_keys;
return r;
}
/*
* 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()
{
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 = alloc(buflen);
else if (maxlen < 10)
{
/* Need some more space. This might happen when receiving a long
* escape sequence. */
buflen += 100;
buf = vim_realloc(buf, buflen);
maxlen = (buflen - 6 - len) / 3;
}
if (buf == NULL)
{
do_outofmem_msg((long_u)buflen);
return ESC; /* panic! */
}
/* 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
#ifdef FEAT_MOUSE
|| n == K_LEFTMOUSE_NM
|| n == K_LEFTDRAG
|| n == K_LEFTRELEASE
|| n == K_LEFTRELEASE_NM
|| n == K_MIDDLEMOUSE
|| n == K_MIDDLEDRAG
|| n == K_MIDDLERELEASE
|| n == K_RIGHTMOUSE
|| n == K_RIGHTDRAG
|| n == K_RIGHTRELEASE
|| n == K_MOUSEDOWN
|| n == K_MOUSEUP
|| n == K_MOUSELEFT
|| n == K_MOUSERIGHT
|| n == K_X1MOUSE
|| n == K_X1DRAG
|| n == K_X1RELEASE
|| n == K_X2MOUSE
|| n == K_X2DRAG
|| n == K_X2RELEASE
# ifdef FEAT_GUI
|| n == K_VER_SCROLLBAR
|| n == K_HOR_SCROLLBAR
# endif
# ifdef FEAT_GUI_MACVIM
|| n == K_SWIPELEFT
|| n == K_SWIPERIGHT
|| n == K_SWIPEUP
|| n == K_SWIPEDOWN
# endif
#endif
)
{
if (buf[1] == KS_MODIFIER)
mod_mask = buf[2];
len -= 3;
if (len > 0)
mch_memmove(buf, buf + 3, (size_t)len);
continue;
}
break;
}
#ifdef FEAT_MBYTE
if (has_mbyte)
{
if (MB_BYTE2LEN(n) > len)
continue; /* more bytes to get */
buf[len >= buflen ? buflen - 1 : len] = NUL;
n = (*mb_ptr2char)(buf);
}
#endif
#ifdef UNIX
if (n == intr_char)
n = ESC;
#endif
break;
}
vim_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(colon, mouse_used)
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;
}
#ifdef FEAT_MOUSE
else if (mouse_used != NULL && c == K_LEFTMOUSE)
{
*mouse_used = TRUE;
n = mouse_row + 1;
break;
}
#endif
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(mouse_used)
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(n)
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,
_("%ld more lines"), pn);
else
vim_snprintf((char *)msg_buf, MSG_BUF_LEN,
_("%ld fewer lines"), 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()
{
if (emsg_silent == 0)
{
flush_buffers(FALSE);
vim_beep();
}
}
/*
* give a warning for an error
*/
void
vim_beep()
{
if (emsg_silent == 0)
{
if (p_vb
#ifdef FEAT_GUI
/* While the GUI is starting up the termcap is set for the GUI
* but the output still goes to a terminal. */
&& !(gui.in_use && gui.starting)
#endif
)
{
out_str(T_VB);
}
else
{
#ifdef MSDOS
/*
* The number of beeps outputted is reduced to avoid having to wait
* for all the beeps to finish. This is only a problem on systems
* where the beeps don't overlap.
*/
if (beep_count == 0 || beep_count == 10)
{
out_char(BELL);
beep_count = 1;
}
else
++beep_count;
#else
out_char(BELL);
#endif
}
/* 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 $HOME
* For Unix:
* - go to that directory
* - do mch_dirname() to get the real name of that directory.
* This also works with mounts and links.
* Don't do this for MS-DOS, it will change the "current dir" for a drive.
*/
static char_u *homedir = NULL;
void
init_homedir()
{
char_u *var;
/* In case we are called a second time (when 'encoding' changes). */
vim_free(homedir);
homedir = NULL;
#ifdef VMS
var = mch_getenv((char_u *)"SYS$LOGIN");
#else
var = mch_getenv((char_u *)"HOME");
#endif
if (var != NULL && *var == NUL) /* empty is same as not set */
var = NULL;
#ifdef WIN3264
/*
* Weird but true: $HOME may contain an indirect reference to another
* variable, esp. "%USERPROFILE%". Happens when $USERPROFILE isn't set
* when $HOME is being set.
*/
if (var != NULL && *var == '%')
{
char_u *p;
char_u *exp;
p = vim_strchr(var + 1, '%');
if (p != NULL)
{
vim_strncpy(NameBuff, var + 1, p - (var + 1));
exp = mch_getenv(NameBuff);
if (exp != NULL && *exp != NUL
&& STRLEN(exp) + STRLEN(p) < MAXPATHL)
{
vim_snprintf((char *)NameBuff, MAXPATHL, "%s%s", exp, p + 1);
var = NameBuff;
/* Also set $HOME, it's needed for _viminfo. */
vim_setenv((char_u *)"HOME", NameBuff);
}
}
}
/*
* Typically, $HOME is not defined on Windows, unless the user has
* specifically defined it for Vim's sake. However, on Windows NT
* platforms, $HOMEDRIVE and $HOMEPATH are automatically defined for
* each user. Try constructing $HOME from these.
*/
if (var == NULL)
{
char_u *homedrive, *homepath;
homedrive = mch_getenv((char_u *)"HOMEDRIVE");
homepath = mch_getenv((char_u *)"HOMEPATH");
if (homepath == NULL || *homepath == NUL)
homepath = "\\";
if (homedrive != NULL
&& STRLEN(homedrive) + STRLEN(homepath) < MAXPATHL)
{
sprintf((char *)NameBuff, "%s%s", homedrive, homepath);
if (NameBuff[0] != NUL)
{
var = NameBuff;
/* Also set $HOME, it's needed for _viminfo. */
vim_setenv((char_u *)"HOME", NameBuff);
}
}
}
# if defined(FEAT_MBYTE)
if (enc_utf8 && var != NULL)
{
int len;
char_u *pp = NULL;
/* Convert from active codepage to UTF-8. Other conversions are
* not done, because they would fail for non-ASCII characters. */
acp_to_enc(var, (int)STRLEN(var), &pp, &len);
if (pp != NULL)
{
homedir = pp;
return;
}
}
# endif
#endif
#if defined(OS2) || defined(MSDOS) || defined(MSWIN)
/*
* Default home dir is C:/
* Best assumption we can make in such a situation.
*/
if (var == NULL)
var = "C:/";
#endif
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 (mch_dirname(NameBuff, MAXPATHL) == OK
&& mch_chdir((char *)NameBuff) == 0)
{
if (!mch_chdir((char *)var) && mch_dirname(IObuff, IOSIZE) == OK)
var = IObuff;
if (mch_chdir((char *)NameBuff) != 0)
EMSG(_(e_prev_dir));
}
#endif
homedir = vim_strsave(var);
}
}
#if defined(EXITFREE) || defined(PROTO)
void
free_homedir()
{
vim_free(homedir);
}
#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(src)
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(src, one)
char_u *src;
int one;
{
char_u *p;
p = alloc(MAXPATHL);
if (p != NULL)
expand_env_esc(src, p, MAXPATHL, FALSE, one, NULL);
return p;
}
/*
* Expand environment variable with path name.
* "~/" is also expanded, using $HOME. For Unix "~user/" is expanded.
* Skips over "\ ", "\~" and "\$" (not for Win32 though).
* If anything fails no expansion is done and dst equals src.
*/
void
expand_env(src, dst, dstlen)
char_u *src; /* input string e.g. "$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(srcp, dst, dstlen, esc, one, startstr)
char_u *srcp; /* input string e.g. "$HOME/vim.hlp" */
char_u *dst; /* where to put the result */
int dstlen; /* maximum length of the result */
int esc; /* escape spaces in expanded variables */
int one; /* "srcp" is one file name */
char_u *startstr; /* start again after this (can be NULL) */
{
char_u *src;
char_u *tail;
int c;
char_u *var;
int copy_char;
int mustfree; /* var was allocated, need to free it later */
int at_start = TRUE; /* at start of a name */
int startstr_len = 0;
if (startstr != NULL)
startstr_len = (int)STRLEN(startstr);
src = skipwhite(srcp);
--dstlen; /* leave one char space for "\," */
while (*src && dstlen > 0)
{
copy_char = TRUE;
if ((*src == '$'
#ifdef VMS
&& at_start
#endif
)
#if defined(MSDOS) || defined(MSWIN) || defined(OS2)
|| *src == '%'
#endif
|| (*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))
#if defined(MSDOS) || defined(MSWIN) || defined(OS2)
|| (*src == '%' && *tail != '%')
#endif
))
{
#ifdef OS2 /* env vars only in uppercase */
*var++ = TOUPPER_LOC(*tail);
tail++; /* toupper() may be a macro! */
#else
*var++ = *tail++;
#endif
}
}
#if defined(MSDOS) || defined(MSWIN) || defined(OS2) || 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(MSDOS) || defined(MSWIN) || defined(OS2) || 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) || (defined(VMS) && defined(USER_HOME))
/*
* 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;
# ifdef UNIX
/*
* If the system supports getpwnam(), use it.
* Otherwise, or if getpwnam() 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).
*/
# if defined(HAVE_GETPWNAM) && defined(HAVE_PWD_H)
{
struct passwd *pw;
/* Note: memory allocated by getpwnam() is never freed.
* Calling endpwent() apparently doesn't help. */
pw = getpwnam((char *)dst + 1);
if (pw != NULL)
var = (char_u *)pw->pw_dir;
else
var = NULL;
}
if (var == NULL)
# endif
{
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 /* !UNIX, thus VMS */
/*
* USER_HOME is a comma-separated list of
* directories to search for the user account in.
*/
{
char_u test[MAXPATHL], paths[MAXPATHL];
char_u *path, *next_path, *ptr;
struct stat st;
STRCPY(paths, USER_HOME);
next_path = paths;
while (*next_path)
{
for (path = next_path; *next_path && *next_path != ',';
next_path++);
if (*next_path)
*next_path++ = NUL;
STRCPY(test, path);
STRCAT(test, "/");
STRCAT(test, dst + 1);
if (mch_stat(test, &st) == 0)
{
var = alloc(STRLEN(test) + 1);
STRCPY(var, test);
mustfree = TRUE;
break;
}
}
}
# endif /* UNIX */
#else
/* cannot expand user's home directory, so don't try */
var = NULL;
tail = (char_u *)""; /* for gcc */
#endif /* UNIX || VMS */
}
#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 (p != NULL)
{
if (mustfree)
vim_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)
vim_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) || defined(AMIGA)
&& dst[-1] != ':'
#endif
&& vim_ispathsep(*tail))
++tail;
dst += c;
src = tail;
copy_char = FALSE;
}
if (mustfree)
vim_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(name, mustfree)
char_u *name;
int *mustfree;
{
char_u *p;
char_u *pend;
int vimruntime;
#if defined(OS2) || defined(MSDOS) || defined(MSWIN)
/* use "C:/" when $HOME is not set */
if (STRCMP(name, "HOME") == 0)
return homedir;
#endif
p = mch_getenv(name);
if (p != NULL && *p == NUL) /* empty is the same as not set */
p = NULL;
if (p != NULL)
{
#if defined(FEAT_MBYTE) && defined(WIN3264)
if (enc_utf8)
{
int len;
char_u *pp = NULL;
/* Convert from active codepage to UTF-8. Other conversions are
* not done, because they would fail for non-ASCII characters. */
acp_to_enc(p, (int)STRLEN(p), &pp, &len);
if (pp != NULL)
{
p = pp;
*mustfree = TRUE;
}
}
#endif
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 = mch_getenv((char_u *)"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 = mch_getenv((char_u *)"VIM");
#if defined(FEAT_MBYTE) && defined(WIN3264)
if (enc_utf8)
{
int len;
char_u *pp = NULL;
/* Convert from active codepage to UTF-8. Other conversions
* are not done, because they would fail for non-ASCII
* characters. */
acp_to_enc(p, (int)STRLEN(p), &pp, &len);
if (pp != NULL)
{
if (*mustfree)
vim_free(p);
p = pp;
*mustfree = TRUE;
}
}
#endif
}
}
/*
* 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 = gettail(p);
/* remove "doc/" from 'helpfile', if present */
if (p == p_hf)
pend = remove_tail(p, pend, (char_u *)"doc");
#ifdef USE_EXE_NAME
# ifdef MACOS_X
/* remove "MacOS" from exe_name and add "Resources/vim" */
if (p == exe_name)
{
char_u *pend1;
char_u *pnew;
pend1 = remove_tail(p, pend, (char_u *)"MacOS");
if (pend1 != pend)
{
pnew = alloc((unsigned)(pend1 - p) + 15);
if (pnew != NULL)
{
STRNCPY(pnew, p, (pend1 - p));
STRCPY(pnew + (pend1 - p), "Resources/vim");
p = pnew;
pend = p + STRLEN(p);
}
}
}
# endif
/* remove "src/" from exe_name, if present */
if (p == exe_name)
pend = remove_tail(p, pend, (char_u *)"src");