File: [local] / src / usr.bin / vim / Attic / misccmds.c (download)
Revision 1.4, Mon Oct 14 03:55:18 1996 UTC (27 years, 7 months ago) by downsj
Branch: MAIN
CVS Tags: OPENBSD_2_2_BASE, OPENBSD_2_2, OPENBSD_2_1_BASE, OPENBSD_2_1
Changes since 1.3: +5 -1 lines
Backout a previous change that didn't work, and update to version 4.5.
|
/* $OpenBSD: misccmds.c,v 1.4 1996/10/14 03:55:18 downsj Exp $ */
/* vi:set ts=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.
*/
/*
* misccmds.c: functions that didn't seem to fit elsewhere
*/
#include "vim.h"
#include "globals.h"
#include "proto.h"
#include "option.h"
#ifdef HAVE_FCNTL_H
# include <fcntl.h> /* for chdir() */
#endif
static int get_indent_str __ARGS((char_u *ptr));
static void check_status __ARGS((BUF *));
/*
* count the size of the indent in the current line
*/
int
get_indent()
{
return get_indent_str(ml_get_curline());
}
/*
* count the size of the indent in line "lnum"
*/
int
get_indent_lnum(lnum)
linenr_t lnum;
{
return get_indent_str(ml_get(lnum));
}
/*
* count the size of the indent in line "ptr"
*/
static int
get_indent_str(ptr)
register char_u *ptr;
{
register int count = 0;
for ( ; *ptr; ++ptr)
{
if (*ptr == TAB) /* count a tab for what it is worth */
count += (int)curbuf->b_p_ts - (count % (int)curbuf->b_p_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
*/
void
set_indent(size, del_first)
register int size;
int del_first;
{
int oldstate = State;
register int c;
State = INSERT; /* don't want REPLACE for State */
curwin->w_cursor.col = 0;
if (del_first) /* delete old indent */
{
/* vim_iswhite() is a define! */
while ((c = gchar_cursor()), vim_iswhite(c))
(void)delchar(FALSE);
}
if (!curbuf->b_p_et) /* if 'expandtab' is set, don't use TABs */
while (size >= (int)curbuf->b_p_ts)
{
ins_char(TAB);
size -= (int)curbuf->b_p_ts;
}
while (size)
{
ins_char(' ');
--size;
}
State = oldstate;
}
#if defined(CINDENT) || defined(SMARTINDENT)
static int is_cinword __ARGS((char_u *line));
/*
* Return TRUE if the string "line" starts with a word from 'cinwords'.
*/
static int
is_cinword(line)
char_u *line;
{
char_u *cinw;
char_u *cinw_buf;
int cinw_len;
int retval = FALSE;
int len;
cinw_len = 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 &&
(!iswordchar(line[len]) || !iswordchar(line[len - 1])))
{
retval = TRUE;
break;
}
}
vim_free(cinw_buf);
}
return retval;
}
#endif
/*
* Opencmd
*
* Add a new line below or above the current line.
* Caller must take care of undo.
*
* Return TRUE for success, FALSE for failure
*/
int
Opencmd(dir, redraw, del_spaces)
int dir; /* FORWARD or BACKWARD */
int redraw; /* redraw afterwards */
int del_spaces; /* delete spaces after cursor */
{
char_u *saved_line; /* copy of the original line */
char_u *p_extra = NULL; /* what goes to next line */
int extra_len = 0; /* length of p_extra string */
FPOS 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 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 */
FPOS *pos;
int old_plines = 0; /* init for GCC */
int new_plines = 0; /* init for GCC */
#ifdef SMARTINDENT
int no_si = FALSE; /* reset did_si afterwards */
int first_char = NUL; /* init for GCC */
#endif
/*
* make a copy of the current line so we can mess with it
*/
saved_line = strsave(ml_get_curline());
if (saved_line == NULL) /* out of memory! */
return FALSE;
if (State == INSERT || State == REPLACE)
{
p_extra = saved_line + curwin->w_cursor.col;
#ifdef SMARTINDENT
if (curbuf->b_p_si) /* need first char after new line break */
{
p = skipwhite(p_extra);
first_char = *p;
}
#endif
extra_len = STRLEN(p_extra);
saved_char = *p_extra;
*p_extra = NUL;
}
u_clearline(); /* cannot do "U" command when adding lines */
#ifdef SMARTINDENT
did_si = FALSE;
#endif
/*
* 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 SMARTINDENT
|| curbuf->b_p_si
#endif
)
{
/*
* count white space on current line
*/
newindent = get_indent();
if (newindent == 0)
newindent = old_indent; /* for ^^D command in insert mode */
old_indent = 0;
/*
* If we just did an auto-indent, then we didn't type anything on
* the prior line, and it should be truncated.
*/
if (dir == FORWARD && did_ai)
trunc_line = TRUE;
#ifdef 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) {"
*/
else if (curbuf->b_p_si && *saved_line != NUL &&
(p_extra == NULL || first_char != '{'))
{
char_u *ptr;
char_u last_char;
old_cursor = curwin->w_cursor;
ptr = saved_line;
lead_len = get_leader_len(ptr, NULL);
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();
}
lead_len = get_leader_len(ptr, NULL);
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 = p - ptr;
if ((pos = findmatch(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 = p - ptr;
if ((pos = findmatch('(')) != 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 != '}' &&
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 (curbuf->b_p_si)
can_si = TRUE;
#endif /* SMARTINDENT */
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.
*/
lead_len = get_leader_len(saved_line, &lead_flags);
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;
/*
* 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_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, ",");
}
/*
* Isolate the strings of the middle and end leader.
*/
while (*p && p[-1] != ':') /* find end of middle flags */
++p;
(void)copy_option_part(&p, lead_middle, COM_MAX_LEN, ",");
while (*p && p[-1] != ':') /* find end of end flags */
++p;
(void)copy_option_part(&p, lead_end, COM_MAX_LEN, ",");
/*
* If the end of the comment is in the same line, don't use
* the comment leader.
*/
if (dir == FORWARD)
{
n = STRLEN(lead_end);
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)
{
if (current_flag == COM_START)
{
lead_repl = lead_middle;
lead_repl_len = 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)))
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 = p - lead_repl;
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_exta later) */
leader = alloc(lead_len + lead_repl_len + extra_space +
extra_len + 1);
allocated = leader; /* remember to free it later */
if (leader == NULL)
lead_len = 0;
else
{
STRNCPY(leader, saved_line, lead_len);
leader[lead_len] = NUL;
/*
* Replace leader with lead_repl, right or left adjusted
*/
if (lead_repl != NULL)
{
for (p = lead_flags; *p && *p != ':'; ++p)
if (*p == COM_RIGHT || *p == COM_LEFT)
break;
if (*p == 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;
if (p < leader + lead_repl_len)
p = leader;
else
p -= lead_repl_len;
vim_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)
if (!vim_iswhite(*p))
*p = ' ';
}
else /* left adjusted leader */
{
p = skipwhite(leader);
vim_memmove(p, lead_repl, (size_t)lead_repl_len);
/* blank-out any other chars from the old leader. */
for (p += lead_repl_len; p < leader + lead_len; ++p)
if (!vim_iswhite(*p))
*p = ' ';
*p = NUL;
}
/* Recompute the indent, it may have changed. */
if (curbuf->b_p_ai
#ifdef SMARTINDENT
|| curbuf->b_p_si
#endif
)
newindent = get_indent_str(leader);
}
lead_len = STRLEN(leader);
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 SMARTINDENT
|| did_si
#endif
)
{
while (lead_len && vim_iswhite(*leader))
{
--lead_len;
--newcol;
++leader;
}
}
}
#ifdef 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 SMARTINDENT
|| curbuf->b_p_si
#endif
))
{
old_cursor = curwin->w_cursor;
curwin->w_cursor.col = comment_end - saved_line;
if ((pos = findmatch(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 "del_spaces" TRUE, skip to the first non-blank.
*
* When in REPLACE mode, put the deleted blanks on the replace
* stack, followed by a NUL, so they can be put back when
* a BS is entered.
*/
if (State == REPLACE)
replace_push(NUL); /* end of extra blanks */
if (curbuf->b_p_ai || del_spaces)
{
while (*p_extra == ' ' || *p_extra == '\t')
{
if (State == REPLACE)
replace_push(*p_extra);
++p_extra;
}
}
if (*p_extra != NUL)
did_ai = FALSE; /* append some text, don't trucate now */
}
if (p_extra == NULL)
p_extra = (char_u *)""; /* append empty line */
/* concatenate leader and p_extra, if there is a leader */
if (lead_len)
{
STRCAT(leader, p_extra);
p_extra = leader;
}
old_cursor = curwin->w_cursor;
if (dir == BACKWARD)
--curwin->w_cursor.lnum;
if (ml_append(curwin->w_cursor.lnum, p_extra, (colnr_t)0, FALSE) == FAIL)
goto theend;
mark_adjust(curwin->w_cursor.lnum + 1, MAXLNUM, 1L, 0L);
if (newindent
#ifdef SMARTINDENT
|| did_si
#endif
)
{
++curwin->w_cursor.lnum;
#ifdef SMARTINDENT
if (did_si)
{
if (p_sr)
newindent -= newindent % (int)curbuf->b_p_sw;
newindent += (int)curbuf->b_p_sw;
}
#endif
set_indent(newindent, FALSE);
/*
* In REPLACE mode the new indent must be put on
* the replace stack for when it is deleted with BS
*/
if (State == REPLACE)
for (n = 0; n < (int)curwin->w_cursor.col; ++n)
replace_push(NUL);
newcol += curwin->w_cursor.col;
#ifdef SMARTINDENT
if (no_si)
did_si = FALSE;
#endif
}
/*
* In REPLACE mode the extra leader must be put on the replace stack for
* when it is deleted with BS.
*/
if (State == REPLACE)
while (lead_len-- > 0)
replace_push(NUL);
curwin->w_cursor = old_cursor;
if (dir == FORWARD)
{
if (redraw) /* want to know the old number of screen lines */
{
old_plines = plines(curwin->w_cursor.lnum);
new_plines = old_plines;
}
if (trunc_line || State == INSERT || State == REPLACE)
{
if (trunc_line)
{
/* find start of trailing white space */
for (n = STRLEN(saved_line); n > 0 &&
vim_iswhite(saved_line[n - 1]); --n)
;
saved_line[n] = NUL;
}
else /* truncate current line at cursor */
*(saved_line + curwin->w_cursor.col) = NUL;
ml_replace(curwin->w_cursor.lnum, saved_line, FALSE);
saved_line = NULL;
new_plines = plines(curwin->w_cursor.lnum);
}
/*
* Get the cursor to the start of the line, so that 'curwin->w_row'
* gets set to the right physical line number for the stuff that
* follows...
*/
curwin->w_cursor.col = 0;
if (redraw)
{
/*
* Call cursupdate() to compute w_row.
* But we don't want it to update the srceen.
*/
++RedrawingDisabled;
cursupdate();
--RedrawingDisabled;
/*
* If we're doing an open on the last logical line, then go ahead
* and scroll the screen up. Otherwise, just insert a blank line
* at the right place if the number of screen lines changed.
* We use calls to plines() in case the cursor is resting on a
* long line, we want to know the row below the line.
*/
n = curwin->w_row + new_plines;
if (n == curwin->w_winpos + curwin->w_height)
scrollup(1L);
else
win_ins_lines(curwin, n,
plines(curwin->w_cursor.lnum + 1) + new_plines - old_plines,
TRUE, TRUE);
}
/*
* Put the cursor on the new line. Careful: the cursupdate() and
* scrollup() above may have moved w_cursor, we must use old_cursor.
*/
curwin->w_cursor.lnum = old_cursor.lnum + 1;
}
else if (redraw) /* insert physical line above current line */
win_ins_lines(curwin, curwin->w_row, 1, TRUE, TRUE);
curwin->w_cursor.col = newcol;
#ifdef LISPINDENT
/*
* May do lisp indenting.
*/
if (leader == NULL && curbuf->b_p_lisp && curbuf->b_p_ai)
fixthisline(get_lisp_indent);
#endif
#ifdef CINDENT
/*
* May do indenting after opening a new line.
*/
if (leader == NULL && curbuf->b_p_cin &&
in_cinkeys(dir == FORWARD ? KEY_OPEN_FORW :
KEY_OPEN_BACK, ' ', linewhite(curwin->w_cursor.lnum)))
fixthisline(get_c_indent);
#endif
if (redraw)
{
updateScreen(VALID_TO_CURSCHAR);
cursupdate(); /* update curwin->w_row */
}
CHANGED;
retval = TRUE; /* success! */
theend:
vim_free(saved_line);
vim_free(allocated);
return retval;
}
/*
* 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 non-zero, it is set to point to the flags of the recognized
* comment leader.
*/
int
get_leader_len(line, flags)
char_u *line;
char_u **flags;
{
int i, j;
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;
if (!fo_do_comments) /* don't format comments at all */
return 0;
i = 0;
while (vim_iswhite(line[i])) /* leading white space is ignored */
++i;
/*
* Repeat to match several nested comment strings.
*/
while (line[i])
{
/*
* 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) /* remember where flags started */
*flags = 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 */
/*
* When already found a nested comment, only accept further
* nested comments.
*/
if (got_com && vim_strchr(part_buf, COM_NEST) == NULL)
continue;
/*
* Line contents and string must match.
*/
for (j = 0; string[j] != NUL && string[j] == line[i + j]; ++j)
;
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.
*/
i += j;
got_com = TRUE;
found_one = TRUE;
break;
}
/*
* No match found, stop scanning.
*/
if (!found_one)
break;
/*
* Include any trailing white space.
*/
while (vim_iswhite(line[i]))
++i;
/*
* If this comment doesn't nest, stop here.
*/
if (vim_strchr(part_buf, COM_NEST) == NULL)
break;
}
return (got_com ? i : 0);
}
/*
* plines(p) - return the number of physical screen lines taken by line 'p'
*/
int
plines(p)
linenr_t p;
{
return plines_win(curwin, p);
}
int
plines_win(wp, p)
WIN *wp;
linenr_t p;
{
register long col;
register char_u *s;
register int lines;
if (!wp->w_p_wrap)
return 1;
s = ml_get_buf(wp->w_buffer, p, FALSE);
if (*s == NUL) /* empty line */
return 1;
col = linetabsize(s);
/*
* If list mode is on, then the '$' at the end of the line takes up one
* extra column.
*/
if (wp->w_p_list)
col += 1;
/*
* If 'number' mode is on, add another 8.
*/
if (wp->w_p_nu)
col += 8;
lines = (col + (Columns - 1)) / Columns;
if (lines <= wp->w_height)
return lines;
return (int)(wp->w_height); /* maximum length */
}
/*
* Count the physical lines (rows) for the lines "first" to "last" inclusive.
*/
int
plines_m(first, last)
linenr_t first, last;
{
return plines_m_win(curwin, first, last);
}
int
plines_m_win(wp, first, last)
WIN *wp;
linenr_t first, last;
{
int count = 0;
while (first <= last)
count += plines_win(wp, first++);
return (count);
}
/*
* Insert or replace a single character at the cursor position.
* When in REPLACE mode, replace any existing character.
*/
void
ins_char(c)
int c;
{
register char_u *p;
char_u *newp;
char_u *oldp;
int oldlen;
int extra;
colnr_t col = curwin->w_cursor.col;
linenr_t lnum = curwin->w_cursor.lnum;
oldp = ml_get(lnum);
oldlen = STRLEN(oldp) + 1;
if (State != REPLACE || *(oldp + col) == NUL)
extra = 1;
else
extra = 0;
/*
* a character has to be put on the replace stack if there is a
* character that is replaced, so it can be put back when BS is used.
* Otherwise a 0 is put on the stack, indicating that a new character
* was inserted, which can be deleted when BS is used.
*/
if (State == REPLACE)
replace_push(!extra ? *(oldp + col) : 0);
newp = alloc_check((unsigned)(oldlen + extra));
if (newp == NULL)
return;
vim_memmove(newp, oldp, (size_t)col);
p = newp + col;
vim_memmove(p + extra, oldp + col, (size_t)(oldlen - col));
*p = c;
ml_replace(lnum, newp, FALSE);
/*
* If we're in insert or replace mode and 'showmatch' is set, then check for
* right parens and braces. If there isn't a match, then beep. If there
* is a match AND it's on the screen, then flash to it briefly. If it
* isn't on the screen, don't do anything.
*/
#ifdef RIGHTLEFT
if (p_sm && (State & INSERT) &&
((!curwin->w_p_rl && (c == ')' || c == '}' || c == ']')) ||
(curwin->w_p_rl && (c == '(' || c == '{' || c == '['))))
#else
if (p_sm && (State & INSERT) && (c == ')' || c == '}' || c == ']'))
#endif
showmatch();
#ifdef RIGHTLEFT
if (!p_ri || State == REPLACE) /* normal insert: cursor right */
#endif
++curwin->w_cursor.col;
CHANGED;
}
/*
* Insert a string at the cursor position.
* Note: Nothing special for replace mode.
*/
void
ins_str(s)
char_u *s;
{
register char_u *oldp, *newp;
register int newlen = STRLEN(s);
int oldlen;
colnr_t col = curwin->w_cursor.col;
linenr_t lnum = curwin->w_cursor.lnum;
oldp = ml_get(lnum);
oldlen = STRLEN(oldp);
newp = alloc_check((unsigned)(oldlen + newlen + 1));
if (newp == NULL)
return;
vim_memmove(newp, oldp, (size_t)col);
vim_memmove(newp + col, s, (size_t)newlen);
vim_memmove(newp + col + newlen, oldp + col, (size_t)(oldlen - col + 1));
ml_replace(lnum, newp, FALSE);
curwin->w_cursor.col += newlen;
CHANGED;
}
/*
* delete one character under the cursor
*
* return FAIL for failure, OK otherwise
*/
int
delchar(fixpos)
int fixpos; /* if TRUE fix the cursor position when done */
{
char_u *oldp, *newp;
colnr_t oldlen;
linenr_t lnum = curwin->w_cursor.lnum;
colnr_t col = curwin->w_cursor.col;
int was_alloced;
oldp = ml_get(lnum);
oldlen = STRLEN(oldp);
if (col >= oldlen) /* can't do anything (happens with replace mode) */
return FAIL;
/*
* 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
{
newp = alloc((unsigned)oldlen); /* need to allocated a new line */
if (newp == NULL)
return FAIL;
vim_memmove(newp, oldp, (size_t)col);
}
vim_memmove(newp + col, oldp + col + 1, (size_t)(oldlen - col));
if (!was_alloced)
ml_replace(lnum, newp, FALSE);
/*
* If we just took off the last character of a non-blank line, we don't
* want to end up positioned at the NUL.
*/
if (fixpos && curwin->w_cursor.col > 0 && col == oldlen - 1)
--curwin->w_cursor.col;
CHANGED;
return OK;
}
/*
* Delete from cursor to end of line.
*
* 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 = strsave((char_u *)"");
else
newp = strnsave(ml_get(lnum), col);
if (newp == NULL)
return FAIL;
ml_replace(lnum, newp, FALSE);
/*
* 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;
CHANGED;
return OK;
}
void
dellines(nlines, dowindow, undo)
long nlines; /* number of lines to delete */
int dowindow; /* if true, update the window */
int undo; /* if true, prepare for undo */
{
int num_plines = 0;
if (nlines <= 0)
return;
/*
* There's no point in keeping the window updated if redrawing is disabled
* or we're deleting more than a window's worth of lines.
*/
if (RedrawingDisabled)
dowindow = FALSE;
else if (nlines > (curwin->w_height - curwin->w_row) && dowindow)
{
dowindow = FALSE;
/* flaky way to clear rest of window */
win_del_lines(curwin, curwin->w_row, curwin->w_height, TRUE, TRUE);
}
/* save the deleted lines for undo */
if (undo && u_savedel(curwin->w_cursor.lnum, nlines) == FAIL)
return;
/* adjust marks for deleted lines and lines that follow */
mark_adjust(curwin->w_cursor.lnum, curwin->w_cursor.lnum + nlines - 1,
MAXLNUM, -nlines);
while (nlines-- > 0)
{
if (curbuf->b_ml.ml_flags & ML_EMPTY) /* nothing to delete */
break;
/*
* Set up to delete the correct number of physical lines on the
* window
*/
if (dowindow)
num_plines += plines(curwin->w_cursor.lnum);
ml_delete(curwin->w_cursor.lnum, TRUE);
CHANGED;
/* If we delete the last line in the file, stop */
if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
{
curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
break;
}
}
curwin->w_cursor.col = 0;
/*
* Delete the correct number of physical lines on the window
*/
if (dowindow && num_plines > 0)
win_del_lines(curwin, curwin->w_row, num_plines, TRUE, TRUE);
}
int
gchar(pos)
FPOS *pos;
{
return (int)(*(ml_get_pos(pos)));
}
int
gchar_cursor()
{
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;
}
/*
* Put *pos at end of current buffer
*/
void
goto_endofbuf(pos)
FPOS *pos;
{
char_u *p;
pos->lnum = curbuf->b_ml.ml_line_count;
pos->col = 0;
p = ml_get(pos->lnum);
while (*p++)
++pos->col;
}
/*
* 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;
{
register char_u *ptr;
register 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;
}
/*
* skipwhite: skip over ' ' and '\t'.
*/
char_u *
skipwhite(p)
register char_u *p;
{
while (vim_iswhite(*p)) /* skip to next non-white */
++p;
return p;
}
/*
* skipdigits: skip over digits;
*/
char_u *
skipdigits(p)
register char_u *p;
{
while (isdigit(*p)) /* skip to next non-digit */
++p;
return p;
}
/*
* skiptowhite: skip over text until ' ' or '\t' or NUL.
*/
char_u *
skiptowhite(p)
register char_u *p;
{
while (*p != ' ' && *p != '\t' && *p != NUL)
++p;
return p;
}
/*
* skiptowhite_esc: Like skiptowhite(), but also skip escaped chars
*/
char_u *
skiptowhite_esc(p)
register char_u *p;
{
while (*p != ' ' && *p != '\t' && *p != NUL)
{
if ((*p == '\\' || *p == Ctrl('V')) && *(p + 1) != NUL)
++p;
++p;
}
return p;
}
/*
* getdigits: get a number from a string and skip over it
*
* note: you must give a pointer to a char_u pointer!
*/
long
getdigits(pp)
char_u **pp;
{
register char_u *p;
long retval;
p = *pp;
retval = atol((char *)p);
p = skipdigits(p); /* skip to next non-digit */
*pp = p;
return retval;
}
/*
* 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;
}
char *
plural(n)
long n;
{
static char buf[2] = "s";
if (n == 1)
return &(buf[1]);
return &(buf[0]);
}
/*
* set_Changed is called when something in the current buffer is changed
*/
void
set_Changed()
{
if (!curbuf->b_changed)
{
change_warning(0);
curbuf->b_changed = TRUE;
check_status(curbuf);
}
modified = TRUE; /* used for redrawing */
}
/*
* unset_Changed is called when the changed flag must be reset for buffer 'buf'
*/
void
unset_Changed(buf)
BUF *buf;
{
if (buf->b_changed)
{
buf->b_changed = 0;
check_status(buf);
}
}
/*
* check_status: called when the status bars for the buffer 'buf'
* need to be updated
*/
static void
check_status(buf)
BUF *buf;
{
WIN *wp;
int i;
i = 0;
for (wp = firstwin; wp != NULL; wp = wp->w_next)
if (wp->w_buffer == buf && wp->w_status_height)
{
wp->w_redr_status = TRUE;
++i;
}
if (i)
redraw_later(NOT_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.
*/
void
change_warning(col)
int col; /* column for message; non-zero when in insert
mode and 'showmode' is on */
{
if (curbuf->b_did_warn == FALSE && curbuf->b_changed == 0 &&
#ifdef AUTOCMD
!autocmd_busy &&
#endif
curbuf->b_p_ro)
{
/*
* Do what msg() does, but with a column offset.
*/
msg_start();
msg_col = col;
MSG_OUTSTR("Warning: Changing a readonly file");
msg_clr_eos();
(void)msg_end();
flushbuf();
mch_delay(1000L, TRUE); /* give him some time to think about it */
curbuf->b_did_warn = TRUE;
}
}
/*
* 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 mch_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 = ' ';
char_u buf[20];
int len = 0;
int idx = 0;
if (exiting) /* put terminal in raw mode for this question */
settmode(1);
while (r != 'y' && r != 'n')
{
(void)set_highlight('r'); /* same highlighting as for wait_return */
msg_highlight = TRUE;
smsg((char_u *)"%s (y/n)?", str);
if (direct)
{
flushbuf();
if (idx >= len)
{
len = mch_inchar(buf, 20, -1L);
idx = 0;
}
r = buf[idx++];
}
else
r = vgetc();
if (r == Ctrl('C') || r == ESC)
r = 'n';
msg_outchar(r); /* show what you typed */
flushbuf();
}
return r;
}
/*
* get a number from the user
*/
int
get_number()
{
int n = 0;
int c;
for (;;)
{
windgoto(msg_row, msg_col);
c = vgetc();
if (isdigit(c))
{
n = n * 10 + c - '0';
msg_outchar(c);
}
else if (c == K_DEL || c == K_BS || c == Ctrl('H'))
{
n /= 10;
MSG_OUTSTR("\b \b");
}
else if (c == CR || c == NL || c == Ctrl('C'))
break;
}
return n;
}
void
msgmore(n)
long n;
{
long pn;
if (global_busy || /* no messages now, wait until global is finished */
keep_msg) /* there is a message already, skip this one */
return;
if (n > 0)
pn = n;
else
pn = -n;
if (pn > p_report)
{
sprintf((char *)msg_buf, "%ld %s line%s %s",
pn, n > 0 ? "more" : "fewer", plural(pn),
got_int ? "(Interrupted)" : "");
if (msg(msg_buf))
keep_msg = msg_buf;
}
}
/*
* flush map and typeahead buffers and give a warning for an error
*/
void
beep_flush()
{
flush_buffers(FALSE);
vim_beep();
}
/*
* give a warning for an error
*/
void
vim_beep()
{
if (p_vb)
{
#ifdef DJGPP
ScreenVisualBell();
#else
outstr(T_VB);
#endif
}
else
{
#if defined MSDOS || defined WIN32 /* ? gvr */
/*
* 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)
{
outchar('\007');
beep_count = 1;
}
else
++beep_count;
#else
outchar('\007');
#endif
}
}
/*
* 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;
var = vim_getenv((char_u *)"HOME");
#if defined(OS2) || defined(MSDOS) || defined(WIN32)
/*
* 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
if (mch_dirname(NameBuff, MAXPATHL) == OK)
{
if (!vim_chdir((char *)var) && mch_dirname(IObuff, IOSIZE) == OK)
var = IObuff;
vim_chdir((char *)NameBuff);
}
#endif
homedir = strsave(var);
}
}
/*
* Expand environment variable with path name.
* For Unix and OS/2 "~/" is also expanded, like $HOME.
* If anything fails no expansion is done and dst equals src.
* Note that IObuff must NOT be used as either src or dst! This is because
* vim_getenv() may use IObuff to do its expansion.
*/
void
expand_env(src, dst, dstlen)
char_u *src; /* input string e.g. "$HOME/vim.hlp" */
char_u *dst; /* where to put the result */
int dstlen; /* maximum length of the result */
{
char_u *tail;
int c;
char_u *var;
int copy_char;
#if defined(UNIX) || defined(OS2)
int mustfree;
int at_start = TRUE;
#endif
src = skipwhite(src);
--dstlen; /* leave one char space for "\," */
while (*src && dstlen > 0)
{
copy_char = TRUE;
if (*src == '$'
#if defined(UNIX) || defined(OS2)
|| (*src == '~' && at_start)
#endif
)
{
#if defined(UNIX) || defined(OS2)
mustfree = FALSE;
/*
* The variable name is copied into dst temporarily, because it may
* be a string in read-only memory and a NUL needs to be inserted.
*/
if (*src == '$') /* environment var */
{
#endif
tail = src + 1;
var = dst;
c = dstlen - 1;
while (c-- > 0 && *tail && isidchar(*tail))
#ifdef OS2
{ /* env vars only in uppercase */
*var++ = toupper(*tail); /* toupper() may be a macro! */
tail++;
}
#else
*var++ = *tail++;
#endif
*var = NUL;
#if defined(OS2) || defined(MSDOS) || defined(WIN32)
/* use "C:/" when $HOME is not set */
if (STRCMP(dst, "HOME") == 0)
var = homedir;
else
#endif
var = vim_getenv(dst);
#if defined(UNIX) || defined(OS2)
}
/* home directory */
else if (src[1] == NUL ||
vim_strchr((char_u *)"/ ,\t\n", src[1]) != NULL)
{
var = homedir;
tail = src + 1;
}
else /* user directory */
# ifdef OS2
{
/* cannot expand user's home directory, so don't try */
var = NULL;
tail = ""; /* shut gcc up about "may be used uninitialized" */
}
# else
{
/*
* Copy ~user to dst[], so we can put a NUL after it.
*/
tail = src;
var = dst;
c = dstlen - 1;
while (c-- > 0 && *tail &&
isfilechar(*tail) && !ispathsep(*tail))
*var++ = *tail++;
*var = NUL;
/*
* 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;
pw = getpwnam((char *)dst + 1);
if (pw != NULL)
var = (char_u *)pw->pw_dir;
else
var = NULL;
}
if (var == NULL)
# endif
{
var = ExpandOne(dst, NULL, 0, WILD_EXPAND_FREE);
mustfree = TRUE;
}
}
# endif /* OS2 */
#endif /* UNIX || OS2 */
if (var != NULL && *var != NUL &&
(STRLEN(var) + STRLEN(tail) + 1 < (unsigned)dstlen))
{
STRCPY(dst, var);
dstlen -= STRLEN(var);
dst += STRLEN(var);
/* if var[] ends in a path separator and tail[] starts
* with it, skip a character */
if (*var && ispathsep(*(dst-1)) && ispathsep(*tail))
++tail;
src = tail;
copy_char = FALSE;
}
#if defined(UNIX) || defined(OS2)
if (mustfree)
vim_free(var);
#endif
}
if (copy_char) /* copy at least one char */
{
#if defined(UNIX) || defined(OS2)
/*
* Recogize the start of a new name, for '~'.
*/
at_start = FALSE;
#endif
if (src[0] == '\\')
{
*dst++ = *src++;
--dstlen;
}
#if defined(UNIX) || defined(OS2)
else if (src[0] == ' ' || src[0] == ',')
at_start = TRUE;
#endif
*dst++ = *src++;
--dstlen;
}
}
*dst = NUL;
}
/*
* Replace home directory by "~" in each space or comma separated filename in
* 'src'. If anything fails (except when out of space) dst equals src.
*/
void
home_replace(buf, src, dst, dstlen)
BUF *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 */
{
size_t dirlen = 0, envlen = 0;
size_t len;
char_u *homedir_env;
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, gettail(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 = vim_getenv((char_u *)"HOME");
if (homedir_env != NULL)
envlen = STRLEN(homedir_env);
src = skipwhite(src);
while (*src && dstlen > 0)
{
/*
* Here we are at the beginning of a filename.
* First, check to see if the beginning of the filename 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 && (ispathsep(src[len]) ||
src[len] == ',' || src[len] == ' ' || src[len] == NUL))
{
src += len;
if (--dstlen > 0)
*dst++ = '~';
/*
* If it's just the home directory, add "/".
*/
if (!ispathsep(src[0]) && --dstlen > 0)
*dst++ = '/';
}
if (p == homedir_env)
break;
p = homedir_env;
len = envlen;
}
/* skip to separator: space or comma */
while (*src && *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;
}
/*
* Like home_replace, store the replaced string in allocated memory.
* When something fails, NULL is returned.
*/
char_u *
home_replace_save(buf, src)
BUF *buf; /* when not NULL, check for help files */
char_u *src; /* input file name */
{
char_u *dst;
unsigned len;
len = 3; /* space for "~/" and trailing NUL */
if (src != NULL) /* just in case */
len += STRLEN(src);
dst = alloc(len);
if (dst != NULL)
home_replace(buf, src, dst, len);
return dst;
}
/*
* Compare two file names and return:
* FPC_SAME if they both exist and are the same file.
* FPC_DIFF if they both exist and are different files.
* FPC_NOTX if they both don't exist.
* FPC_DIFFX if one of them doesn't exist.
* For the first name environment variables are expanded
*/
int
fullpathcmp(s1, s2)
char_u *s1, *s2;
{
#ifdef UNIX
char_u buf1[MAXPATHL];
struct stat st1, st2;
int r1, r2;
expand_env(s1, buf1, MAXPATHL);
r1 = stat((char *)buf1, &st1);
r2 = stat((char *)s2, &st2);
if (r1 != 0 && r2 != 0)
return FPC_NOTX;
if (r1 != 0 || r2 != 0)
return FPC_DIFFX;
if (st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino)
return FPC_SAME;
return FPC_DIFF;
#else
char_u *buf1 = NULL;
char_u *buf2 = NULL;
int retval = FPC_DIFF;
int r1, r2;
if ((buf1 = alloc(MAXPATHL)) != NULL && (buf2 = alloc(MAXPATHL)) != NULL)
{
expand_env(s1, buf2, MAXPATHL);
/*
* If FullName() failed, the file probably doesn't exist.
*/
r1 = FullName(buf2, buf1, MAXPATHL, FALSE);
r2 = FullName(s2, buf2, MAXPATHL, FALSE);
if (r1 != OK && r2 != OK)
retval = FPC_NOTX;
else if (r1 != OK || r2 != OK)
retval = FPC_DIFFX;
else if (fnamecmp(buf1, buf2))
retval = FPC_DIFF;
else
retval = FPC_SAME;
}
vim_free(buf1);
vim_free(buf2);
return retval;
#endif
}
/*
* get the tail of a path: the file name.
*/
char_u *
gettail(fname)
char_u *fname;
{
register char_u *p1, *p2;
if (fname == NULL)
return (char_u *)"";
for (p1 = p2 = fname; *p2; ++p2) /* find last part of path */
{
if (ispathsep(*p2))
p1 = p2 + 1;
}
return p1;
}
/*
* Get a pointer to one character past the head of a path name.
* Unix: after "/"; DOS: after "c:\"; Amiga: after "disk:/".
* If there is no head, path is returned.
*/
char_u *
get_past_head(path)
char_u *path;
{
char_u *retval;
#if defined(MSDOS) || defined(WIN32) || defined(OS2)
/* may skip "c:" */
if (isalpha(path[0]) && path[1] == ':')
retval = path + 2;
else
retval = path;
#else
# if defined(AMIGA)
/* may skip "label:" */
retval = vim_strchr(path, ':');
if (retval == NULL)
retval = path;
# else /* Unix */
retval = path;
# endif
#endif
while (ispathsep(*retval))
++retval;
return retval;
}
/*
* return TRUE if 'c' is a path separator.
*/
int
ispathsep(c)
int c;
{
#ifdef UNIX
return (c == PATHSEP); /* UNIX has ':' inside file names */
#else
# ifdef BACKSLASH_IN_FILENAME
return (c == ':' || c == PATHSEP || c == '\\');
# else
return (c == ':' || c == PATHSEP);
# endif
#endif
}
/*
* Concatenate filenames fname1 and fname2 into allocated memory.
* Only add a '/' when 'sep' is TRUE and it is neccesary.
*/
char_u *
concat_fnames(fname1, fname2, sep)
char_u *fname1;
char_u *fname2;
int sep;
{
char_u *dest;
dest = alloc((unsigned)(STRLEN(fname1) + STRLEN(fname2) + 2));
if (dest != NULL)
{
STRCPY(dest, fname1);
if (sep && *dest && !ispathsep(*(dest + STRLEN(dest) - 1)))
STRCAT(dest, PATHSEPSTR);
STRCAT(dest, fname2);
}
return dest;
}
/*
* FullName_save - Make an allocated copy of a full file name.
* Returns NULL when failed.
*/
char_u *
FullName_save(fname)
char_u *fname;
{
char_u *buf;
char_u *new_fname = NULL;
buf = alloc((unsigned)MAXPATHL);
if (buf != NULL)
{
if (FullName(fname, buf, MAXPATHL, FALSE) != FAIL)
new_fname = strsave(buf);
vim_free(buf);
}
return new_fname;
}
#ifdef CINDENT
/*
* Functions for C-indenting.
* Most of this originally comes from Eric Fischer.
*/
/*
* Below "XXX" means that this function may unlock the current line.
*/
static int isdefault __ARGS((char_u *));
static char_u *after_label __ARGS((char_u *l));
static int get_indent_nolabel __ARGS((linenr_t lnum));
static int skip_label __ARGS((linenr_t, char_u **pp, int ind_maxcomment));
static int ispreproc __ARGS((char_u *));
static int iscomment __ARGS((char_u *));
static int commentorempty __ARGS((char_u *));
static int isterminated __ARGS((char_u *));
static int isfuncdecl __ARGS((char_u *));
static char_u *skip_string __ARGS((char_u *p));
static int isif __ARGS((char_u *));
static int iselse __ARGS((char_u *));
static int isdo __ARGS((char_u *));
static int iswhileofdo __ARGS((char_u *, linenr_t, int));
static FPOS *find_start_comment __ARGS((int ind_maxcomment));
static FPOS *find_start_brace __ARGS((int));
static FPOS *find_match_paren __ARGS((int, int));
static int find_last_paren __ARGS((char_u *l));
static int find_match __ARGS((int lookfor, linenr_t ourscope,
int ind_maxparen, int ind_maxcomment));
/*
* Recognize a label: "label:".
* Note: curwin->w_cursor must be where we are looking for the label.
*/
int
islabel(ind_maxcomment) /* XXX */
int ind_maxcomment;
{
char_u *s;
s = skipwhite(ml_get_curline());
/*
* Exclude "default" from labels, since it should be indented
* like a switch label.
*/
if (isdefault(s))
return FALSE;
if (!isidchar(*s)) /* need at least one ID character */
return FALSE;
while (isidchar(*s))
s++;
s = skipwhite(s);
/* "::" is not a label, it's C++ */
if (*s == ':' && s[1] != ':')
{
/*
* Only accept a label if the previous line is terminated or is a case
* label.
*/
FPOS cursor_save;
FPOS *trypos;
char_u *line;
cursor_save = curwin->w_cursor;
while (curwin->w_cursor.lnum > 1)
{
--curwin->w_cursor.lnum;
/*
* If we're in a comment now, skip to the start of the comment.
*/
curwin->w_cursor.col = 0;
if ((trypos = find_start_comment(ind_maxcomment)) != NULL) /* XXX */
curwin->w_cursor = *trypos;
line = ml_get_curline();
if (ispreproc(line)) /* ignore #defines, #if, etc. */
continue;
if (commentorempty(line))
continue;
curwin->w_cursor = cursor_save;
if (isterminated(line) || iscase(line))
return TRUE;
return FALSE;
}
curwin->w_cursor = cursor_save;
return TRUE; /* label at start of file??? */
}
return FALSE;
}
/*
* Recognize a switch label: "case .*:" or "default:".
*/
int
iscase(s)
char_u *s;
{
s = skipwhite(s);
if (STRNCMP(s, "case", 4) == 0 && !isidchar(s[4]))
{
for (s += 4; *s; ++s)
if (*s == ':')
{
if (s[1] == ':') /* skip over "::" for C++ */
++s;
else
return TRUE;
}
return FALSE;
}
if (isdefault(s))
return TRUE;
return FALSE;
}
/*
* Recognize a "default" switch label.
*/
static int
isdefault(s)
char_u *s;
{
return (STRNCMP(s, "default", 7) == 0 &&
*(s = skipwhite(s + 7)) == ':' &&
s[1] != ':');
}
/*
* Return a pointer to the first non-empty non-comment character after a ':'.
* Return NULL if not found.
* case 234: a = b;
* ^
*/
static char_u *
after_label(l)
char_u *l;
{
for ( ; *l; ++l)
if (*l == ':')
{
if (l[1] == ':') /* skip over "::" for C++ */
++l;
else
break;
}
if (*l == NUL)
return NULL;
l = skipwhite(l + 1);
if (commentorempty(l))
return NULL;
return l;
}
/*
* Get indent of line "lnum", skipping a label.
* Return 0 if there is nothing after the label.
*/
static int
get_indent_nolabel(lnum) /* XXX */
linenr_t lnum;
{
char_u *l;
FPOS fp;
colnr_t col;
char_u *p;
l = ml_get(lnum);
p = after_label(l);
if (p == NULL)
return 0;
fp.col = p - l;
fp.lnum = lnum;
getvcol(curwin, &fp, &col, NULL, NULL);
return (int)col;
}
/*
* Find indent for line "lnum", ignoring any case or jump label.
* Also return a pointer to the text (after the label).
* label: if (asdf && asdfasdf)
* ^
*/
static int
skip_label(lnum, pp, ind_maxcomment)
linenr_t lnum;
char_u **pp;
int ind_maxcomment;
{
char_u *l;
int amount;
FPOS cursor_save;
cursor_save = curwin->w_cursor;
curwin->w_cursor.lnum = lnum;
l = ml_get_curline();
if (iscase(l) || islabel(ind_maxcomment)) /* XXX */
{
amount = get_indent_nolabel(lnum);
l = after_label(ml_get_curline());
if (l == NULL) /* just in case */
l = ml_get_curline();
}
else
{
amount = get_indent();
l = ml_get_curline();
}
*pp = l;
curwin->w_cursor = cursor_save;
return amount;
}
/*
* Recognize a preprocessor statement: Any line that starts with '#'.
*/
static int
ispreproc(s)
char_u *s;
{
s = skipwhite(s);
if (*s == '#')
return TRUE;
return 0;
}
/*
* Recognize the start of a C or C++ comment.
*/
static int
iscomment(p)
char_u *p;
{
return (p[0] == '/' && (p[1] == '*' || p[1] == '/'));
}
/*
* Recognize an empty or comment line.
*/
static int
commentorempty(s)
char_u *s;
{
s = skipwhite(s);
if (*s == NUL || iscomment(s))
return TRUE;
return FALSE;
}
/*
* Recognize a line that starts with '{' or '}', or ends with ';' or '}'.
* Don't consider "} else" a terminated line.
* Also consider a line terminated if it ends in ','. This is not 100%
* correct, but this mostly means we are in initializations and then it's OK.
*/
static int
isterminated(s)
char_u *s;
{
s = skipwhite(s);
if (*s == '{' || (*s == '}' && !iselse(s)))
return TRUE;
while (*s)
{
if (iscomment(s)) /* at start of comment ignore rest of line */
return FALSE;
s = skip_string(s);
if ((*s == ';' || *s == '{' || *s == ',') && commentorempty(s + 1))
return TRUE;
s++;
}
return FALSE;
}
/*
* Recognize the basic picture of a function declaration -- it needs to
* have an open paren somewhere and a close paren at the end of the line and
* no semicolons anywhere.
*/
static int
isfuncdecl(s)
char_u *s;
{
while (*s && *s != '(' && *s != ';')
if (iscomment(s++))
return FALSE; /* comment before () ??? */
if (*s != '(')
return FALSE; /* ';' before any () or no '(' */
while (*s && *s != ';')
{
if (*s == ')' && commentorempty(s + 1))
return TRUE;
if (iscomment(s++))
return FALSE; /* comment between ( and ) ??? */
}
return FALSE;
}
/*
* Skip over a "string" and a 'c' character.
*/
static char_u *
skip_string(p)
char_u *p;
{
int i;
/*
* We loop, because strings may be concatenated: "date""time".
*/
for ( ; ; ++p)
{
if (p[0] == '\'') /* 'c' or '\n' or '\000' */
{
if (!p[1]) /* ' at end of line */
break;
i = 2;
if (p[1] == '\\') /* '\n' or '\000' */
{
++i;
while (isdigit(p[i - 1])) /* '\000' */
++i;
}
if (p[i] == '\'') /* check for trailing ' */
{
p += i;
continue;
}
}
else if (p[0] == '"') /* start of string */
{
for (++p; p[0]; ++p)
{
if (p[0] == '\\' && p[1])
++p;
else if (p[0] == '"') /* end of string */
break;
}
continue;
}
break; /* no string found */
}
if (!*p)
--p; /* backup from NUL */
return p;
}
static int
isif(p)
char_u *p;
{
return (STRNCMP(p, "if", 2) == 0 && !isidchar(p[2]));
}
static int
iselse(p)
char_u *p;
{
if (*p == '}') /* accept "} else" */
p = skipwhite(p + 1);
return (STRNCMP(p, "else", 4) == 0 && !isidchar(p[4]));
}
static int
isdo(p)
char_u *p;
{
return (STRNCMP(p, "do", 2) == 0 && !isidchar(p[2]));
}
/*
* Check if this is a "while" that should have a matching "do".
* We only accept a "while (condition) ;", with only white space between the
* ')' and ';'. The condition may be spread over several lines.
*/
static int
iswhileofdo(p, lnum, ind_maxparen) /* XXX */
char_u *p;
linenr_t lnum;
int ind_maxparen;
{
FPOS cursor_save;
FPOS *trypos;
int retval = FALSE;
p = skipwhite(p);
if (*p == '}') /* accept "} while (cond);" */
p = skipwhite(p + 1);
if (STRNCMP(p, "while", 5) == 0 && !isidchar(p[5]))
{
cursor_save = curwin->w_cursor;
curwin->w_cursor.lnum = lnum;
curwin->w_cursor.col = 0;
p = ml_get_curline();
while (*p && *p != 'w') /* skip any '}', until the 'w' of the "while" */
{
++p;
++curwin->w_cursor.col;
}
if ((trypos = findmatchlimit(0, 0, ind_maxparen)) != NULL)
{
p = ml_get_pos(trypos) + 1;
p = skipwhite(p);
if (*p == ';')
retval = TRUE;
}
curwin->w_cursor = cursor_save;
}
return retval;
}
/*
* Find the start of a comment, not knowing if we are in a comment right now.
* Search starts at w_cursor.lnum and goes backwards.
*/
static FPOS *
find_start_comment(ind_maxcomment) /* XXX */
int ind_maxcomment;
{
FPOS *pos;
char_u *line;
char_u *p;
if ((pos = findmatchlimit('*', FM_BACKWARD, ind_maxcomment)) == NULL)
return NULL;
/*
* Check if the comment start we found is inside a string.
*/
line = ml_get(pos->lnum);
for (p = line; *p && (unsigned)(p - line) < pos->col; ++p)
p = skip_string(p);
if ((unsigned)(p - line) > pos->col)
return NULL;
return pos;
}
/*
* Find the '{' at the start of the block we are in.
* Return NULL of no match found.
* Ignore a '{' that is in a comment, makes indenting the next three lines
* work. */
/* foo() */
/* { */
/* } */
static FPOS *
find_start_brace(ind_maxcomment) /* XXX */
int ind_maxcomment;
{
FPOS cursor_save;
FPOS *trypos;
FPOS *pos;
static FPOS pos_copy;
cursor_save = curwin->w_cursor;
while ((trypos = findmatchlimit('{', FM_BLOCKSTOP, 0)) != NULL)
{
pos_copy = *trypos; /* copy FPOS, next findmatch will change it */
trypos = &pos_copy;
curwin->w_cursor = *trypos;
pos = NULL;
if (!iscomment(skipwhite(ml_get(trypos->lnum))) &&
(pos = find_start_comment(ind_maxcomment)) == NULL) /* XXX */
break;
if (pos != NULL)
curwin->w_cursor.lnum = pos->lnum;
}
curwin->w_cursor = cursor_save;
return trypos;
}
/*
* Find the matching '(', failing if it is in a comment.
* Return NULL of no match found.
*/
static FPOS *
find_match_paren(ind_maxparen, ind_maxcomment) /* XXX */
int ind_maxparen;
int ind_maxcomment;
{
FPOS cursor_save;
FPOS *trypos;
static FPOS pos_copy;
cursor_save = curwin->w_cursor;
if ((trypos = findmatchlimit('(', 0, ind_maxparen)) != NULL)
{
if (iscomment(skipwhite(ml_get(trypos->lnum))))
trypos = NULL;
else
{
pos_copy = *trypos; /* copy trypos, findmatch will change it */
trypos = &pos_copy;
curwin->w_cursor = *trypos;
if (find_start_comment(ind_maxcomment) != NULL) /* XXX */
trypos = NULL;
}
}
curwin->w_cursor = cursor_save;
return trypos;
}
/*
* Set w_cursor.col to the column number of the last ')' in line "l".
*/
static int
find_last_paren(l)
char_u *l;
{
int i;
int retval = FALSE;
curwin->w_cursor.col = 0; /* default is start of line */
for (i = 0; l[i]; i++)
{
i = skip_string(l + i) - l; /* ignore parens in quotes */
if (l[i] == ')')
{
curwin->w_cursor.col = i;
retval = TRUE;
}
}
return retval;
}
int
get_c_indent()
{
/*
* spaces from a block's opening brace the prevailing indent for that
* block should be
*/
int ind_level = curbuf->b_p_sw;
/*
* spaces from the edge of the line an open brace that's at the end of a
* line is imagined to be.
*/
int ind_open_imag = 0;
/*
* spaces from the prevailing indent for a line that is not precededof by
* an opening brace.
*/
int ind_no_brace = 0;
/*
* column where the first { of a function should be located
*/
int ind_first_open = 0;
/*
* spaces from the prevailing indent a leftmost open brace should be
* located
*/
int ind_open_extra = 0;
/*
* spaces from the matching open brace (real location for one at the left
* edge; imaginary location from one that ends a line) the matching close
* brace should be located
*/
int ind_close_extra = 0;
/*
* spaces from the edge of the line an open brace sitting in the leftmost
* column is imagined to be
*/
int ind_open_left_imag = 0;
/*
* spaces from the switch() indent a "case xx" label should be located
*/
int ind_case = curbuf->b_p_sw;
/*
* spaces from the "case xx:" code after a switch() should be located
*/
int ind_case_code = curbuf->b_p_sw;
/*
* amount K&R-style parameters should be indented
*/
int ind_param = curbuf->b_p_sw;
/*
* amount a function type spec should be indented
*/
int ind_func_type = curbuf->b_p_sw;
/*
* additional spaces beyond the prevailing indent a continuation line
* should be located
*/
int ind_continuation = curbuf->b_p_sw;
/*
* spaces from the indent of the line with an unclosed parentheses
*/
int ind_unclosed = curbuf->b_p_sw * 2;
/*
* spaces from the comment opener when there is nothing after it.
*/
int ind_in_comment = 3;
/*
* max lines to search for an open paren
*/
int ind_maxparen = 20;
/*
* max lines to search for an open comment
*/
int ind_maxcomment = 30;
FPOS cur_curpos;
int amount;
int scope_amount;
int cur_amount;
colnr_t col;
char_u *theline;
char_u *linecopy;
FPOS *trypos;
FPOS our_paren_pos;
char_u *start;
int start_brace;
#define BRACE_IN_COL0 1 /* '{' is in comumn 0 */
#define BRACE_AT_START 2 /* '{' is at start of line */
#define BRACE_AT_END 3 /* '{' is at end of line */
linenr_t ourscope;
char_u *l;
char_u *look;
int lookfor;
#define LOOKFOR_IF 1
#define LOOKFOR_DO 2
#define LOOKFOR_CASE 3
#define LOOKFOR_ANY 4
#define LOOKFOR_TERM 5
#define LOOKFOR_UNTERM 6
int whilelevel;
linenr_t lnum;
char_u *options;
int fraction = 0; /* init for GCC */
int divider;
int n;
for (options = curbuf->b_p_cino; *options; )
{
l = options++;
if (*options == '-')
++options;
n = getdigits(&options);
divider = 0;
if (*options == '.') /* ".5s" means a fraction */
{
fraction = atol((char *)++options);
while (isdigit(*options))
{
++options;
if (divider)
divider *= 10;
else
divider = 10;
}
}
if (*options == 's') /* "2s" means two times 'shiftwidth' */
{
if (n == 0 && fraction == 0)
n = curbuf->b_p_sw; /* just "s" is one 'shiftwidth' */
else
{
n *= curbuf->b_p_sw;
if (divider)
n += (curbuf->b_p_sw * fraction + divider / 2) / divider;
}
++options;
}
if (l[1] == '-')
n = -n;
switch (*l)
{
case '>': ind_level = n; break;
case 'e': ind_open_imag = n; break;
case 'n': ind_no_brace = n; break;
case 'f': ind_first_open = n; break;
case '{': ind_open_extra = n; break;
case '}': ind_close_extra = n; break;
case '^': ind_open_left_imag = n; break;
case ':': ind_case = n; break;
case '=': ind_case_code = n; break;
case 'p': ind_param = n; break;
case 't': ind_func_type = n; break;
case 'c': ind_in_comment = n; break;
case '+': ind_continuation = n; break;
case '(': ind_unclosed = n; break;
case ')': ind_maxparen = n; break;
case '*': ind_maxcomment = n; break;
}
}
/* remember where the cursor was when we started */
cur_curpos = curwin->w_cursor;
/* get the current contents of the line.
* This is required, because onle the most recent line obtained with
* ml_get is valid! */
linecopy = strsave(ml_get(cur_curpos.lnum));
if (linecopy == NULL)
return 0;
/*
* In insert mode and the cursor is on a ')' trunctate the line at the
* cursor position. We don't want to line up with the matching '(' when
* inserting new stuff.
*/
if ((State & INSERT) && linecopy[curwin->w_cursor.col] == ')')
linecopy[curwin->w_cursor.col] = NUL;
theline = skipwhite(linecopy);
/* move the cursor to the start of the line */
curwin->w_cursor.col = 0;
/*
* #defines and so on always go at the left when included in 'cinkeys'.
*/
if (*theline == '#' && (*linecopy == '#' || in_cinkeys('#', ' ', TRUE)))
{
amount = 0;
}
/*
* Is it a non-case label? Then that goes at the left margin too.
*/
else if (islabel(ind_maxcomment)) /* XXX */
{
amount = 0;
}
/*
* If we're inside a comment and not looking at the start of the
* comment...
*/
else if (!iscomment(theline) &&
(trypos = find_start_comment(ind_maxcomment)) != NULL) /* XXX */
{
/* find how indented the line beginning the comment is */
getvcol(curwin, trypos, &col, NULL, NULL);
amount = col;
/* if our line starts with an asterisk, line up with the
* asterisk in the comment opener; otherwise, line up
* with the first character of the comment text.
*/
if (theline[0] == '*')
{
amount += 1;
}
else
{
/*
* If we are more than one line away from the comment opener, take
* the indent of the previous non-empty line.
* If we are just below the comment opener and there are any
* white characters after it line up with the text after it.
* up with them; otherwise, just use a single space.
*/
amount = -1;
for (lnum = cur_curpos.lnum - 1; lnum > trypos->lnum; --lnum)
{
if (linewhite(lnum)) /* skip blank lines */
continue;
amount = get_indent_lnum(lnum); /* XXX */
break;
}
if (amount == -1) /* use the comment opener */
{
start = ml_get(trypos->lnum);
look = start + trypos->col + 2; /* skip / and * */
if (*look) /* if something after it */
trypos->col = skipwhite(look) - start;
getvcol(curwin, trypos, &col, NULL, NULL);
amount = col;
if (!*look)
amount += ind_in_comment;
}
}
}
/*
* Are we inside parentheses?
*/ /* XXX */
else if ((trypos = find_match_paren(ind_maxparen, ind_maxcomment)) != NULL)
{
/*
* If the matching paren is more than one line away, use the indent of
* a previous non-empty line that matches the same paren.
*/
amount = -1;
our_paren_pos = *trypos;
if (theline[0] != ')')
{
for (lnum = cur_curpos.lnum - 1; lnum > our_paren_pos.lnum; --lnum)
{
l = skipwhite(ml_get(lnum));
if (commentorempty(l)) /* skip comment lines */
continue;
if (ispreproc(l)) /* ignore #defines, #if, etc. */
continue;
curwin->w_cursor.lnum = lnum;
/* XXX */
if ((trypos = find_match_paren(ind_maxparen,
ind_maxcomment)) != NULL &&
trypos->lnum == our_paren_pos.lnum &&
trypos->col == our_paren_pos.col)
{
amount = get_indent_lnum(lnum); /* XXX */
break;
}
}
}
/*
* Line up with line where the matching paren is.
* If the line starts with a '(' or the indent for unclosed
* parentheses is zero, line up with the unclosed parentheses.
*/
if (amount == -1)
{
amount = skip_label(our_paren_pos.lnum, &look, ind_maxcomment);
if (theline[0] == ')' || ind_unclosed == 0 ||
*skipwhite(look) == '(')
{
/*
* If we're looking at a close paren, line up right there;
* otherwise, line up with the next non-white character.
*/
if (theline[0] != ')')
{
col = our_paren_pos.col + 1;
look = ml_get(our_paren_pos.lnum);
while (vim_iswhite(look[col]))
col++;
if (look[col] != NUL) /* In case of trailing space */
our_paren_pos.col = col;
else
our_paren_pos.col++;
}
/*
* Find how indented the paren is, or the character after it if
* we did the above "if".
*/
getvcol(curwin, &our_paren_pos, &col, NULL, NULL);
amount = col;
}
else
amount += ind_unclosed;
}
}
/*
* Are we at least inside braces, then?
*/
else if ((trypos = find_start_brace(ind_maxcomment)) != NULL) /* XXX */
{
ourscope = trypos->lnum;
start = ml_get(ourscope);
/*
* Now figure out how indented the line is in general.
* If the brace was at the start of the line, we use that;
* otherwise, check out the indentation of the line as
* a whole and then add the "imaginary indent" to that.
*/
look = skipwhite(start);
if (*look == '{')
{
getvcol(curwin, trypos, &col, NULL, NULL);
amount = col;
if (*start == '{')
start_brace = BRACE_IN_COL0;
else
start_brace = BRACE_AT_START;
}
else
{
/*
* that opening brace might have been on a continuation
* line. if so, find the start of the line.
*/
curwin->w_cursor.lnum = ourscope;
/*
* position the cursor over the rightmost paren, so that
* matching it will take us back to the start of the line.
*/
lnum = ourscope;
if (find_last_paren(start) &&
(trypos = find_match_paren(ind_maxparen,
ind_maxcomment)) != NULL)
lnum = trypos->lnum;
/*
* It could have been something like
* case 1: if (asdf &&
* ldfd) {
* }
*/
amount = skip_label(lnum, &l, ind_maxcomment);
start_brace = BRACE_AT_END;
}
/*
* if we're looking at a closing brace, that's where
* we want to be. otherwise, add the amount of room
* that an indent is supposed to be.
*/
if (theline[0] == '}')
{
/*
* they may want closing braces to line up with something
* other than the open brace. indulge them, if so.
*/
amount += ind_close_extra;
}
else
{
/*
* If we're looking at an "else", try to find an "if"
* to match it with.
* If we're looking at a "while", try to find a "do"
* to match it with.
*/
lookfor = 0;
if (iselse(theline))
lookfor = LOOKFOR_IF;
else if (iswhileofdo(theline, cur_curpos.lnum, ind_maxparen))
/* XXX */
lookfor = LOOKFOR_DO;
if (lookfor)
{
curwin->w_cursor.lnum = cur_curpos.lnum;
if (find_match(lookfor, ourscope, ind_maxparen,
ind_maxcomment) == OK)
{
amount = get_indent(); /* XXX */
goto theend;
}
}
/*
* We get here if we are not on an "while-of-do" or "else" (or
* failed to find a matching "if").
* Search backwards for something to line up with.
* First set amount for when we don't find anything.
*/
/*
* if the '{' is _really_ at the left margin, use the imaginary
* location of a left-margin brace. Otherwise, correct the
* location for ind_open_extra.
*/
if (start_brace == BRACE_IN_COL0) /* '{' is in column 0 */
{
amount = ind_open_left_imag;
}
else
{
if (start_brace == BRACE_AT_END) /* '{' is at end of line */
amount += ind_open_imag;
else
{
amount -= ind_open_extra;
if (amount < 0)
amount = 0;
}
}
if (iscase(theline)) /* it's a switch() label */
{
lookfor = LOOKFOR_CASE; /* find a previous switch() label */
amount += ind_case;
}
else
{
lookfor = LOOKFOR_ANY;
amount += ind_level; /* ind_level from start of block */
}
scope_amount = amount;
whilelevel = 0;
/*
* Search backwards. If we find something we recognize, line up
* with that.
*
* if we're looking at an open brace, indent
* the usual amount relative to the conditional
* that opens the block.
*/
curwin->w_cursor = cur_curpos;
for (;;)
{
curwin->w_cursor.lnum--;
curwin->w_cursor.col = 0;
/*
* If we went all the way back to the start of our scope, line
* up with it.
*/
if (curwin->w_cursor.lnum <= ourscope)
{
if (lookfor == LOOKFOR_UNTERM)
amount += ind_continuation;
else if (lookfor != LOOKFOR_TERM)
amount = scope_amount;
break;
}
/*
* If we're in a comment now, skip to the start of the comment.
*/ /* XXX */
if ((trypos = find_start_comment(ind_maxcomment)) != NULL)
{
curwin->w_cursor.lnum = trypos->lnum + 1;
continue;
}
l = ml_get_curline();
/*
* If this is a switch() label, may line up relative to that.
*/
if (iscase(l))
{
/*
* case xx:
* c = 99 + <- this indent plus continuation
*-> here;
*/
if (lookfor == LOOKFOR_UNTERM)
{
amount += ind_continuation;
break;
}
/*
* case xx: <- line up with this case
* x = 333;
* case yy:
*/
if (lookfor == LOOKFOR_CASE)
{
/*
* Check that this case label is not for another
* switch()
*/ /* XXX */
if ((trypos = find_start_brace(ind_maxcomment)) ==
NULL || trypos->lnum == ourscope)
{
amount = get_indent(); /* XXX */
break;
}
continue;
}
n = get_indent_nolabel(curwin->w_cursor.lnum); /* XXX */
/*
* case xx: if (cond) <- line up with this if
* y = y + 1;
* -> s = 99;
*
* case xx:
* if (cond) <- line up with this line
* y = y + 1;
* -> s = 99;
*/
if (lookfor == LOOKFOR_TERM)
{
if (n)
amount = n;
break;
}
/*
* case xx: x = x + 1; <- line up with this x
* -> y = y + 1;
*
* case xx: if (cond) <- line up with this if
* -> y = y + 1;
*/
if (n)
{
amount = n;
l = after_label(ml_get_curline());
if (l != NULL && is_cinword(l))
amount += ind_level + ind_no_brace;
break;
}
/*
* Try to get the indent of a statement before the
* switch label. If nothing is found, line up relative
* to the switch label.
* break; <- may line up with this line
* case xx:
* -> y = 1;
*/
scope_amount = get_indent() + ind_case_code; /* XXX */
lookfor = LOOKFOR_ANY;
continue;
}
/*
* Looking for a switch() label, ignore other lines.
*/
if (lookfor == LOOKFOR_CASE)
continue;
/*
* Ignore jump labels with nothing after them.
*/
if (islabel(ind_maxcomment))
{
l = after_label(ml_get_curline());
if (l == NULL || commentorempty(l))
continue;
}
/*
* Ignore #defines, #if, etc.
* Ignore comment and empty lines.
* (need to get the line again, islabel() may have unlocked it)
*/
l = ml_get_curline();
if (ispreproc(l) || commentorempty(l))
continue;
/*
* What happens next depends on the line being terminated.
*/
if (!isterminated(l))
{
/*
* if we're in the middle of a paren thing,
* go back to the line that starts it so
* we can get the right prevailing indent
* if ( foo &&
* bar )
*/
/*
* position the cursor over the rightmost paren, so that
* matching it will take us back to the start of the line.
*/
(void)find_last_paren(l);
if ((trypos = find_match_paren(ind_maxparen,
ind_maxcomment)) != NULL)
{
/*
* Check if we are on a case label now. This is
* handled above.
* case xx: if ( asdf &&
* asdf)
*/
curwin->w_cursor.lnum = trypos->lnum;
l = ml_get_curline();
if (iscase(l))
{
++curwin->w_cursor.lnum;
continue;
}
}
/*
* Get indent and pointer to text for current line,
* ignoring any jump label. XXX
*/
cur_amount = skip_label(curwin->w_cursor.lnum,
&l, ind_maxcomment);
/*
* If this is just above the line we are indenting, and it
* starts with a '{', line it up with this line.
* while (not)
* -> {
* }
*/
if (lookfor != LOOKFOR_TERM && theline[0] == '{')
{
amount = cur_amount + ind_open_extra;
break;
}
/*
* Check if we are after an "if", "while", etc.
* Also allow "} else".
*/
if (is_cinword(l) || iselse(l))
{
/*
* Found an unterminated line after an if (), line up
* with the last one.
* if (cond)
* 100 +
* -> here;
*/
if (lookfor == LOOKFOR_UNTERM)
{
amount += ind_continuation;
break;
}
/*
* If this is just above the line we are indenting, we
* are finished.
* while (not)
* -> here;
* Otherwise this indent can be used when the line
* before this is terminated.
* yyy;
* if (stat)
* while (not)
* xxx;
* -> here;
*/
amount = cur_amount;
if (lookfor != LOOKFOR_TERM)
{
amount += ind_level + ind_no_brace;
break;
}
/*
* Special trick: when expecting the while () after a
* do, line up with the while()
* do
* x = 1;
* -> here
*/
l = skipwhite(ml_get_curline());
if (isdo(l))
{
if (whilelevel == 0)
break;
--whilelevel;
}
/*
* When searching for a terminated line, don't use the
* one between the "if" and the "else".
*/
if (iselse(l))
{
if (find_match(LOOKFOR_IF, ourscope,
ind_maxparen, ind_maxcomment) == FAIL)
break;
}
}
/*
* If we're below an unterminated line that is not an
* "if" or something, we may line up with this line or
* add someting for a continuation line, depending on
* the line before this one.
*/
else
{
/*
* Found two unterminated lines on a row, line up with
* the last one.
* c = 99 +
* 100 +
* -> here;
*/
if (lookfor == LOOKFOR_UNTERM)
break;
/*
* Found first unterminated line on a row, may line up
* with this line, remember its indent
* 100 +
* -> here;
*/
amount = cur_amount;
if (lookfor != LOOKFOR_TERM)
lookfor = LOOKFOR_UNTERM;
}
}
/*
* Check if we are after a while (cond);
* If so: Ignore until the matching "do".
*/
/* XXX */
else if (iswhileofdo(l, curwin->w_cursor.lnum, ind_maxparen))
{
/*
* Found an unterminated line after a while ();, line up
* with the last one.
* while (cond);
* 100 + <- line up with this one
* -> here;
*/
if (lookfor == LOOKFOR_UNTERM)
{
amount += ind_continuation;
break;
}
if (whilelevel == 0)
{
lookfor = LOOKFOR_TERM;
amount = get_indent(); /* XXX */
if (theline[0] == '{')
amount += ind_open_extra;
}
++whilelevel;
}
/*
* We are after a "normal" statement.
* If we had another statement we can stop now and use the
* indent of that other statement.
* Otherwise the indent of the current statement may be used,
* search backwards for the next "normal" statement.
*/
else
{
/*
* Found a terminated line above an unterminated line. Add
* the amount for a continuation line.
* x = 1;
* y = foo +
* -> here;
*/
if (lookfor == LOOKFOR_UNTERM)
{
amount += ind_continuation;
break;
}
/*
* Found a terminated line above a terminated line or "if"
* etc. line. Use the amount of the line below us.
* x = 1; x = 1;
* if (asdf) y = 2;
* while (asdf) ->here;
* here;
* ->foo;
*/
if (lookfor == LOOKFOR_TERM)
{
if (whilelevel == 0)
break;
}
/*
* First line above the one we're indenting is terminated.
* To know what needs to be done look further backward for
* a terminated line.
*/
else
{
/*
* position the cursor over the rightmost paren, so
* that matching it will take us back to the start of
* the line. Helps for:
* func(asdr,
* asdfasdf);
* here;
*/
term_again:
l = ml_get_curline();
if (find_last_paren(l) &&
(trypos = find_match_paren(ind_maxparen,
ind_maxcomment)) != NULL)
{
/*
* Check if we are on a case label now. This is
* handled above.
* case xx: if ( asdf &&
* asdf)
*/
curwin->w_cursor.lnum = trypos->lnum;
l = ml_get_curline();
if (iscase(l))
{
++curwin->w_cursor.lnum;
continue;
}
}
/*
* Get indent and pointer to text for current line,
* ignoring any jump label.
*/
amount = skip_label(curwin->w_cursor.lnum,
&l, ind_maxcomment);
if (theline[0] == '{')
amount += ind_open_extra;
lookfor = LOOKFOR_TERM;
/*
* If we're at the end of a block, skip to the start of
* that block.
*/
if (*skipwhite(l) == '}' &&
(trypos = find_start_brace(ind_maxcomment))
!= NULL) /* XXX */
{
curwin->w_cursor.lnum = trypos->lnum;
goto term_again;
}
}
}
}
}
}
/*
* ok -- we're not inside any sort of structure at all!
*
* this means we're at the top level, and everything should
* basically just match where the previous line is, except
* for the lines immediately following a function declaration,
* which are K&R-style parameters and need to be indented.
*/
else
{
/*
* if our line starts with an open brace, forget about any
* prevailing indent and make sure it looks like the start
* of a function
*/
if (theline[0] == '{')
{
amount = ind_first_open;
}
/*
* If the NEXT line is a function declaration, the current
* line needs to be indented as a function type spec.
* Don't do this if the current line looks like a comment.
*/
else if (cur_curpos.lnum < curbuf->b_ml.ml_line_count &&
!commentorempty(theline) &&
isfuncdecl(ml_get(cur_curpos.lnum + 1)))
{
amount = ind_func_type;
}
else
{
amount = 0;
curwin->w_cursor = cur_curpos;
/* search backwards until we find something we recognize */
while (curwin->w_cursor.lnum > 1)
{
curwin->w_cursor.lnum--;
curwin->w_cursor.col = 0;
l = ml_get_curline();
/*
* If we're in a comment now, skip to the start of the comment.
*/ /* XXX */
if ((trypos = find_start_comment(ind_maxcomment)) != NULL)
{
curwin->w_cursor.lnum = trypos->lnum + 1;
continue;
}
/*
* If the line looks like a function declaration, and we're
* not in a comment, put it the left margin.
*/
if (isfuncdecl(theline))
break;
/*
* Skip preprocessor directives and blank lines.
*/
if (ispreproc(l))
continue;
if (commentorempty(l))
continue;
/*
* If the PREVIOUS line is a function declaration, the current
* line (and the ones that follow) needs to be indented as
* parameters.
*/
if (isfuncdecl(l))
{
amount = ind_param;
break;
}
/*
* Doesn't look like anything interesting -- so just
* use the indent of this line.
*
* Position the cursor over the rightmost paren, so that
* matching it will take us back to the start of the line.
*/
find_last_paren(l);
if ((trypos = find_match_paren(ind_maxparen,
ind_maxcomment)) != NULL)
curwin->w_cursor.lnum = trypos->lnum;
amount = get_indent(); /* XXX */
break;
}
}
}
theend:
/* put the cursor back where it belongs */
curwin->w_cursor = cur_curpos;
vim_free(linecopy);
if (amount < 0)
return 0;
return amount;
}
static int
find_match(lookfor, ourscope, ind_maxparen, ind_maxcomment)
int lookfor;
linenr_t ourscope;
int ind_maxparen;
int ind_maxcomment;
{
char_u *look;
FPOS *theirscope;
char_u *mightbeif;
int elselevel;
int whilelevel;
if (lookfor == LOOKFOR_IF)
{
elselevel = 1;
whilelevel = 0;
}
else
{
elselevel = 0;
whilelevel = 1;
}
curwin->w_cursor.col = 0;
while (curwin->w_cursor.lnum > ourscope + 1)
{
curwin->w_cursor.lnum--;
curwin->w_cursor.col = 0;
look = skipwhite(ml_get_curline());
if (iselse(look) || isif(look) || isdo(look) ||
iswhileofdo(look, curwin->w_cursor.lnum, ind_maxparen)) /* XXX */
{
/*
* if we've gone outside the braces entirely,
* we must be out of scope...
*/
theirscope = find_start_brace(ind_maxcomment); /* XXX */
if (theirscope == NULL)
break;
/*
* and if the brace enclosing this is further
* back than the one enclosing the else, we're
* out of luck too.
*/
if (theirscope->lnum < ourscope)
break;
/*
* and if they're enclosed in a *deeper* brace,
* then we can ignore it because it's in a
* different scope...
*/
if (theirscope->lnum > ourscope)
continue;
/*
* if it was an "else" (that's not an "else if")
* then we need to go back to another if, so
* increment elselevel
*/
look = skipwhite(ml_get_curline());
if (iselse(look))
{
mightbeif = skipwhite(look + 4);
if (!isif(mightbeif))
++elselevel;
continue;
}
/*
* if it was a "while" then we need to go back to
* another "do", so increment whilelevel.
*/
if (iswhileofdo(look, curwin->w_cursor.lnum, ind_maxparen))/* XXX */
{
++whilelevel;
continue;
}
/* If it's an "if" decrement elselevel */
look = skipwhite(ml_get_curline());
if (isif(look))
{
elselevel--;
/*
* When looking for an "if" ignore "while"s that
* get in the way.
*/
if (elselevel == 0 && lookfor == LOOKFOR_IF)
whilelevel = 0;
}
/* If it's a "do" decrement whilelevel */
if (isdo(look))
whilelevel--;
/*
* if we've used up all the elses, then
* this must be the if that we want!
* match the indent level of that if.
*/
if (elselevel <= 0 && whilelevel <= 0)
{
return OK;
}
}
}
return FAIL;
}
#endif /* CINDENT */
#ifdef LISPINDENT
int
get_lisp_indent()
{
FPOS *pos, realpos;
long amount = 0;
char_u *that;
colnr_t col;
colnr_t maybe;
colnr_t firsttry;
realpos = curwin->w_cursor;
curwin->w_cursor.col = 0;
if ((pos = findmatch('(')) != NULL)
{
curwin->w_cursor.lnum = pos->lnum;
curwin->w_cursor.col = pos->col;
col = pos->col;
that = ml_get_curline();
maybe = get_indent(); /* XXX */
if (maybe == 0)
amount = 2;
else
{
while (*that && col)
{
amount += lbr_chartabsize(that, (colnr_t)amount);
col--;
that++;
}
that++;
amount++;
firsttry = amount;
/*
* Go to the start of the second word.
* If there is no second word, go back to firsttry.
* Also stop at a '('.
*/
while (vim_iswhite(*that))
{
amount += lbr_chartabsize(that, (colnr_t)amount);
that++;
}
while (*that && !vim_iswhite(*that) && *that != '(')
{
amount += lbr_chartabsize(that, (colnr_t)amount);
that++;
}
while (vim_iswhite(*that))
{
amount += lbr_chartabsize(that, (colnr_t)amount);
that++;
}
if (! *that)
amount = firsttry;
}
}
else /* no matching '(' found, use indent of previous non-empty line */
{
while (curwin->w_cursor.lnum > 1)
{
--curwin->w_cursor.lnum;
if (!linewhite(curwin->w_cursor.lnum))
break;
}
amount = get_indent(); /* XXX */
}
curwin->w_cursor = realpos;
if (amount < 0)
amount = 0;
return (int)amount;
}
#endif /* LISPINDENT */
#if defined(UNIX) || defined(WIN32) || defined(__EMX__)
/*
* Preserve files and exit.
* When called IObuff must contain a message.
*/
void
preserve_exit()
{
BUF *buf;
#ifdef USE_GUI
if (gui.in_use)
{
gui.dying = TRUE;
trash_output_buf(); /* trash any pending output */
}
else
#endif
{
windgoto((int)Rows - 1, 0);
/*
* Switch terminal mode back now, so these messages end up on the
* "normal" screen (if there are two screens).
*/
settmode(0);
#ifdef WIN32
if (can_end_termcap_mode(FALSE) == TRUE)
#endif
stoptermcap();
flushbuf();
}
outstr(IObuff);
screen_start(); /* don't know where cursor is now */
flushbuf();
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)
{
OUTSTR("Vim: preserving files...\n");
screen_start(); /* don't know where cursor is now */
flushbuf();
ml_sync_all(FALSE, FALSE); /* preserve all swap files */
break;
}
}
ml_close_all(FALSE); /* close all memfiles, without deleting */
OUTSTR("Vim: Finished.\n");
getout(1);
}
#endif /* defined(UNIX) || defined(WIN32) || defined(__EMX__) */
/*
* return TRUE if "fname" exists.
*/
int
vim_fexists(fname)
char_u *fname;
{
struct stat st;
if (stat((char *)fname, &st))
return FALSE;
return TRUE;
}
/*
* Check for CTRL-C pressed, but only once in a while.
* Should be used instead of mch_breakcheck() for functions that check for
* each line in the file. Calling mch_breakcheck() each time takes too much
* time, because it can be a system call.
*/
#ifndef BREAKCHECK_SKIP
# define BREAKCHECK_SKIP 32
#endif
void
line_breakcheck()
{
static int count = 0;
if (++count == BREAKCHECK_SKIP)
{
count = 0;
mch_breakcheck();
}
}
/*
* Free the list of files returned by ExpandWildCards() or other expansion
* functions.
*/
void
FreeWild(num, file)
int num;
char_u **file;
{
if (file == NULL || num == 0)
return;
#if defined(__EMX__) && defined(__ALWAYS_HAS_TRAILING_NULL_POINTER) /* XXX */
/*
* Is this still OK for when other functions thatn ExpandWildCards() have
* been used???
*/
_fnexplodefree((char **)file);
#else
while (num--)
vim_free(file[num]);
vim_free(file);
#endif
}
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