www.pudn.com > vim53src.zip > ex_cmds.c
/* 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.
*/
/*
* ex_cmds.c: functions for command line commands
*/
#include "vim.h"
#ifdef EX_EXTRA
static int linelen __ARGS((int *has_tab));
#endif
static void do_filter __ARGS((linenr_t line1, linenr_t line2,
char_u *buff, int do_in, int do_out));
#ifdef VIMINFO
static char_u *viminfo_filename __ARGS((char_u *));
static void do_viminfo __ARGS((FILE *fp_in, FILE *fp_out, int want_info,
int want_marks, int force_read));
static int read_viminfo_up_to_marks __ARGS((char_u *line, FILE *fp,
int forceit, int writing));
#endif
static int do_sub_msg __ARGS((void));
static int
#ifdef __BORLANDC__
_RTLENTRYF
#endif
help_compare __ARGS((const void *s1, const void *s2));
void
do_ascii()
{
int c;
char buf1[20];
char buf2[20];
char_u buf3[3];
#ifdef MULTI_BYTE
int c2 = NUL;
#endif
c = gchar_cursor();
if (c == NUL)
{
MSG("empty line");
return;
}
#ifdef MULTI_BYTE
/* split lead from trail */
c2 = (((unsigned)c >> 8) & 0xff);
c = (c & 0xff);
if (c2)
{
buf2[0] = c;
buf2[1] = c2;
buf2[2] = NUL;
sprintf((char *)IObuff, "%s %d %d, Hex %02x %02x, Octal %03o %03o",
buf2, c,c2, c,c2, c,c2);
}
else
#endif
{
if (c == NL) /* NUL is stored as NL */
c = NUL;
if (vim_isprintc(c) && (c < ' ' || c > '~'))
{
transchar_nonprint(buf3, c);
sprintf(buf1, " <%s>", (char *)buf3);
}
else
buf1[0] = NUL;
if (c >= 0x80)
sprintf(buf2, " ", transchar(c & 0x7f));
else
buf2[0] = NUL;
sprintf((char *)IObuff, "<%s>%s%s %d, Hex %02x, Octal %03o",
transchar(c), buf1, buf2, c, c, c);
}
msg(IObuff);
}
#ifdef EX_EXTRA
/*
* Handle ":left", ":center" and ":right" commands: align text.
*/
void
do_align(eap)
EXARG *eap;
{
FPOS save_curpos;
int len;
int indent = 0;
int new_indent;
int has_tab;
int width;
#ifdef RIGHTLEFT
if (curwin->w_p_rl)
{
/* switch left and right aligning */
if (eap->cmdidx == CMD_right)
eap->cmdidx = CMD_left;
else if (eap->cmdidx == CMD_left)
eap->cmdidx = CMD_right;
}
#endif
width = atoi((char *)eap->arg);
save_curpos = curwin->w_cursor;
if (eap->cmdidx == CMD_left) /* width is used for new indent */
{
if (width >= 0)
indent = width;
}
else
{
/*
* if 'textwidth' set, use it
* else if 'wrapmargin' set, use it
* if invalid value, use 80
*/
if (width <= 0)
width = curbuf->b_p_tw;
if (width == 0 && curbuf->b_p_wm > 0)
width = Columns - curbuf->b_p_wm;
if (width <= 0)
width = 80;
}
if (u_save((linenr_t)(eap->line1 - 1), (linenr_t)(eap->line2 + 1)) == FAIL)
return;
#ifdef SYNTAX_HL
/* recompute syntax hl., starting with first line */
syn_changed(eap->line1);
#endif
for (curwin->w_cursor.lnum = eap->line1;
curwin->w_cursor.lnum <= eap->line2; ++curwin->w_cursor.lnum)
{
if (eap->cmdidx == CMD_left) /* left align */
new_indent = indent;
else
{
len = linelen(eap->cmdidx == CMD_right ? &has_tab
: NULL) - get_indent();
if (len <= 0) /* skip blank lines */
continue;
if (eap->cmdidx == CMD_center)
new_indent = (width - len) / 2;
else
{
new_indent = width - len; /* right align */
/*
* Make sure that embedded TABs don't make the text go too far
* to the right.
*/
if (has_tab)
while (new_indent > 0)
{
set_indent(new_indent, TRUE); /* set indent */
if (linelen(NULL) <= width)
{
/*
* Now try to move the line as much as possible to
* the right. Stop when it moves too far.
*/
do
set_indent(++new_indent, TRUE); /* set indent */
while (linelen(NULL) <= width);
--new_indent;
break;
}
--new_indent;
}
}
}
if (new_indent < 0)
new_indent = 0;
set_indent(new_indent, TRUE); /* set indent */
}
curwin->w_cursor = save_curpos;
beginline(BL_WHITE | BL_FIX);
/*
* If the cursor is after the first changed line, its position needs to be
* updated.
*/
if (curwin->w_cursor.lnum > eap->line1)
{
changed_line_abv_curs();
invalidate_botline();
}
else if (curwin->w_cursor.lnum == eap->line1)
changed_cline_bef_curs();
/*
* If the start of the aligned lines is before botline, it may have become
* approximated (lines got longer or shorter).
*/
if (botline_approximated() && eap->line1 < curwin->w_botline)
approximate_botline();
update_screen(NOT_VALID);
}
/*
* Get the length of the current line, excluding trailing white space.
*/
static int
linelen(has_tab)
int *has_tab;
{
char_u *line;
char_u *first;
char_u *last;
int save;
int len;
/* find the first non-blank character */
line = ml_get_curline();
first = skipwhite(line);
/* find the character after the last non-blank character */
for (last = first + STRLEN(first);
last > first && vim_iswhite(last[-1]); --last)
;
save = *last;
*last = NUL;
len = linetabsize(line); /* get line length */
if (has_tab != NULL) /* check for embedded TAB */
*has_tab = (vim_strrchr(first, TAB) != NULL);
*last = save;
return len;
}
/*
* Handle ":retab" command.
*/
void
do_retab(eap)
EXARG *eap;
{
linenr_t lnum;
int got_tab = FALSE;
long num_spaces = 0;
long num_tabs;
long len;
long col;
long vcol;
long start_col = 0; /* For start of white-space string */
long start_vcol = 0; /* For start of white-space string */
int temp;
long old_len;
char_u *ptr;
char_u *new_line = (char_u *)1; /* init to non-NULL */
int did_something = FALSE;
int did_undo; /* called u_save for current line */
int new_ts;
int save_list;
save_list = curwin->w_p_list;
curwin->w_p_list = 0; /* don't want list mode here */
#ifdef SYNTAX_HL
/* recompute syntax hl. starting with line1 */
syn_changed(eap->line1);
#endif
new_ts = getdigits(&(eap->arg));
if (new_ts == 0)
new_ts = curbuf->b_p_ts;
for (lnum = eap->line1; !got_int && lnum <= eap->line2; ++lnum)
{
ptr = ml_get(lnum);
col = 0;
vcol = 0;
did_undo = FALSE;
for (;;)
{
if (vim_iswhite(ptr[col]))
{
if (!got_tab && num_spaces == 0)
{
/* First consecutive white-space */
start_vcol = vcol;
start_col = col;
}
if (ptr[col] == ' ')
num_spaces++;
else
got_tab = TRUE;
}
else
{
if (got_tab || (eap->forceit && num_spaces > 1))
{
/* Retabulate this string of white-space */
/* len is virtual length of white string */
len = num_spaces = vcol - start_vcol;
num_tabs = 0;
if (!curbuf->b_p_et)
{
temp = new_ts - (start_vcol % new_ts);
if (num_spaces >= temp)
{
num_spaces -= temp;
num_tabs++;
}
num_tabs += num_spaces / new_ts;
num_spaces -= (num_spaces / new_ts) * new_ts;
}
if (curbuf->b_p_et || got_tab ||
(num_spaces + num_tabs < len))
{
if (did_undo == FALSE)
{
did_undo = TRUE;
if (u_save((linenr_t)(lnum - 1),
(linenr_t)(lnum + 1)) == FAIL)
{
new_line = NULL; /* flag out-of-memory */
break;
}
}
/* len is actual number of white characters used */
len = num_spaces + num_tabs;
old_len = STRLEN(ptr);
new_line = lalloc(old_len - col + start_col + len + 1,
TRUE);
if (new_line == NULL)
break;
if (start_col > 0)
mch_memmove(new_line, ptr, (size_t)start_col);
mch_memmove(new_line + start_col + len,
ptr + col, (size_t)(old_len - col + 1));
ptr = new_line + start_col;
for (col = 0; col < len; col++)
ptr[col] = (col < num_tabs) ? '\t' : ' ';
ml_replace(lnum, new_line, FALSE);
did_something = TRUE;
ptr = new_line;
col = start_col + len;
}
}
got_tab = FALSE;
num_spaces = 0;
}
if (ptr[col] == NUL)
break;
vcol += chartabsize(ptr[col++], (colnr_t)vcol);
}
if (new_line == NULL) /* out of memory */
break;
line_breakcheck();
}
if (got_int)
emsg(e_interr);
if (did_something)
changed();
curwin->w_p_list = save_list; /* restore 'list' */
if (curbuf->b_p_ts != new_ts || did_something)
{
/*
* Cursor may need updating when change is before or at the cursor
* line. w_botline may be wrong a bit now.
*/
if (curbuf->b_p_ts != new_ts || eap->line1 < curwin->w_cursor.lnum)
changed_line_abv_curs(); /* recompute cursor pos compl. */
else if (eap->line1 == curwin->w_cursor.lnum)
changed_cline_bef_curs(); /* recompute curosr pos partly */
approximate_botline();
}
curbuf->b_p_ts = new_ts;
coladvance(curwin->w_curswant);
u_clearline();
update_screen(NOT_VALID);
}
#endif
/*
* :move command - move lines line1-line2 to line dest
*
* return FAIL for failure, OK otherwise
*/
int
do_move(line1, line2, dest)
linenr_t line1;
linenr_t line2;
linenr_t dest;
{
char_u *str;
linenr_t l;
linenr_t extra; /* Num lines added before line1 */
linenr_t num_lines; /* Num lines moved */
linenr_t last_line; /* Last line in file after adding new text */
if (dest >= line1 && dest < line2)
{
EMSG("Move lines into themselves");
return FAIL;
}
num_lines = line2 - line1 + 1;
/*
* First we copy the old text to its new location -- webb
* Also copy the flag that ":global" command uses.
*/
if (u_save(dest, dest + 1) == FAIL)
return FAIL;
for (extra = 0, l = line1; l <= line2; l++)
{
str = vim_strsave(ml_get(l + extra));
if (str != NULL)
{
ml_append(dest + l - line1, str, (colnr_t)0, FALSE);
vim_free(str);
if (dest < line1)
extra++;
}
}
/*
* Now we must be careful adjusting our marks so that we don't overlap our
* mark_adjust() calls.
*
* We adjust the marks within the old text so that they refer to the
* last lines of the file (temporarily), because we know no other marks
* will be set there since these line numbers did not exist until we added
* our new lines.
*
* Then we adjust the marks on lines between the old and new text positions
* (either forwards or backwards).
*
* And Finally we adjust the marks we put at the end of the file back to
* their final destination at the new text position -- webb
*/
last_line = curbuf->b_ml.ml_line_count;
mark_adjust(line1, line2, last_line - line2, 0L);
if (dest >= line2)
{
mark_adjust(line2 + 1, dest, -num_lines, 0L);
curbuf->b_op_start.lnum = dest - num_lines + 1;
curbuf->b_op_end.lnum = dest;
}
else
{
mark_adjust(dest + 1, line1 - 1, num_lines, 0L);
curbuf->b_op_start.lnum = dest + 1;
curbuf->b_op_end.lnum = dest + num_lines;
}
curbuf->b_op_start.col = curbuf->b_op_end.col = 0;
mark_adjust(last_line - num_lines + 1, last_line,
-(last_line - dest - extra), 0L);
/*
* Now we delete the original text -- webb
*/
if (u_save(line1 + extra - 1, line2 + extra + 1) == FAIL)
return FAIL;
for (l = line1; l <= line2; l++)
ml_delete(line1 + extra, TRUE);
changed();
if (!global_busy && num_lines > p_report)
smsg((char_u *)"%ld line%s moved", num_lines, plural(num_lines));
/*
* Leave the cursor on the last of the moved lines.
*/
if (dest >= line1)
curwin->w_cursor.lnum = dest;
else
curwin->w_cursor.lnum = dest + (line2 - line1) + 1;
changed_line_abv_curs();
/*
* TODO: should recompute w_botline for simple situations.
*/
invalidate_botline();
return OK;
}
/*
* :copy command - copy lines line1-line2 to line n
*/
void
do_copy(line1, line2, n)
linenr_t line1;
linenr_t line2;
linenr_t n;
{
linenr_t lnum;
char_u *p;
lnum = line2 - line1 + 1;
mark_adjust(n + 1, (linenr_t)MAXLNUM, lnum, 0L);
curbuf->b_op_start.lnum = n + 1;
curbuf->b_op_end.lnum = n + lnum;
curbuf->b_op_start.col = curbuf->b_op_end.col = 0;
/*
* there are three situations:
* 1. destination is above line1
* 2. destination is between line1 and line2
* 3. destination is below line2
*
* n = destination (when starting)
* curwin->w_cursor.lnum = destination (while copying)
* line1 = start of source (while copying)
* line2 = end of source (while copying)
*/
if (u_save(n, n + 1) == FAIL)
return;
curwin->w_cursor.lnum = n;
while (line1 <= line2)
{
/* need to use vim_strsave() because the line will be unlocked
within ml_append */
p = vim_strsave(ml_get(line1));
if (p != NULL)
{
ml_append(curwin->w_cursor.lnum, p, (colnr_t)0, FALSE);
vim_free(p);
}
/* situation 2: skip already copied lines */
if (line1 == n)
line1 = curwin->w_cursor.lnum;
++line1;
if (curwin->w_cursor.lnum < line1)
++line1;
if (curwin->w_cursor.lnum < line2)
++line2;
++curwin->w_cursor.lnum;
}
changed();
changed_line_abv_curs();
/*
* TODO: should recompute w_botline for simple situations.
*/
invalidate_botline();
msgmore((long)lnum);
}
/*
* Handle the ":!cmd" command. Also for ":r !cmd" and ":w !cmd"
* Bangs in the argument are replaced with the previously entered command.
* Remember the argument.
*
* RISCOS: Bangs only replaced when followed by a space, since many
* pathnames contain one.
*/
void
do_bang(addr_count, line1, line2, forceit, arg, do_in, do_out)
int addr_count;
linenr_t line1, line2;
int forceit;
char_u *arg;
int do_in, do_out;
{
static char_u *prevcmd = NULL; /* the previous command */
char_u *newcmd = NULL; /* the new command */
int free_newcmd = FALSE; /* need to free() newcmd */
int ins_prevcmd;
char_u *t;
char_u *p;
char_u *trailarg;
int len;
int scroll_save = msg_scroll;
/*
* Disallow shell commands for "rvim".
* Disallow shell commands from .exrc and .vimrc in current directory for
* security reasons.
*/
if (check_restricted() || check_secure())
return;
if (addr_count == 0) /* :! */
{
msg_scroll = FALSE; /* don't scroll here */
autowrite_all();
msg_scroll = scroll_save;
}
/*
* Try to find an embedded bang, like in :! ! [args]
* (:!! is indicated by the 'forceit' variable)
*/
ins_prevcmd = forceit;
trailarg = arg;
do
{
len = STRLEN(trailarg) + 1;
if (newcmd != NULL)
len += STRLEN(newcmd);
if (ins_prevcmd)
{
if (prevcmd == NULL)
{
emsg(e_noprev);
vim_free(newcmd);
return;
}
len += STRLEN(prevcmd);
}
if ((t = alloc(len)) == NULL)
{
vim_free(newcmd);
return;
}
*t = NUL;
if (newcmd != NULL)
STRCAT(t, newcmd);
if (ins_prevcmd)
STRCAT(t, prevcmd);
p = t + STRLEN(t);
STRCAT(t, trailarg);
vim_free(newcmd);
newcmd = t;
/*
* Scan the rest of the argument for '!', which is replaced by the
* previous command. "\!" is replaced by "!" (this is vi compatible).
*/
trailarg = NULL;
while (*p)
{
if (*p == '!'
#ifdef RISCOS
&& (p[1] == ' ' || p[1] == NUL)
#endif
)
{
if (p > newcmd && p[-1] == '\\')
mch_memmove(p - 1, p, (size_t)(STRLEN(p) + 1));
else
{
trailarg = p;
*trailarg++ = NUL;
ins_prevcmd = TRUE;
break;
}
}
++p;
}
} while (trailarg != NULL);
vim_free(prevcmd);
prevcmd = newcmd;
if (bangredo) /* put cmd in redo buffer for ! command */
{
AppendToRedobuff(prevcmd);
AppendToRedobuff((char_u *)"\n");
bangredo = FALSE;
}
/*
* Add quotes around the command, for shells that need them.
*/
if (*p_shq != NUL)
{
newcmd = alloc((unsigned)(STRLEN(prevcmd) + 2 * STRLEN(p_shq) + 1));
if (newcmd == NULL)
return;
STRCPY(newcmd, p_shq);
STRCAT(newcmd, prevcmd);
STRCAT(newcmd, p_shq);
free_newcmd = TRUE;
}
if (addr_count == 0) /* :! */
{
/* echo the command */
msg_start();
msg_putchar(':');
msg_putchar('!');
msg_outtrans(newcmd);
msg_clr_eos();
windgoto(msg_row, msg_col);
do_shell(newcmd, 0);
}
else /* :range! */
/* Careful: This may recursively call do_bang() again! (because of
* autocommands) */
do_filter(line1, line2, newcmd, do_in, do_out);
if (free_newcmd)
vim_free(newcmd);
}
/*
* call a shell to execute a command
*
* RISCOS GUI: If cmd starts with '~' then don't output anything, and don't
* wait for afterwards.
*/
void
do_shell(cmd, flags)
char_u *cmd;
int flags; /* may be SHELL_DOOUT when output is redirected */
{
BUF *buf;
#ifndef USE_GUI_WIN32
int save_nwr;
#endif
#ifdef WIN32
int winstart;
#endif
#ifdef RISCOS
int silent = FALSE;
#endif
/*
* Disallow shell commands for "rvim".
* Disallow shell commands from .exrc and .vimrc in current directory for
* security reasons.
*/
if (check_restricted() || check_secure())
{
msg_end();
return;
}
#ifdef RISCOS
while (*cmd == ' ')
cmd++;
if (*cmd == '~')
{
/* Useful for commands with no output, or those which open
* another window for their output.
*/
cmd++;
# ifdef USE_GUI
if (gui.in_use)
{
silent = TRUE;
flags |= SHELL_FILTER; /* Makes call_shell() silent too */
}
# endif
}
#endif
#ifdef WIN32
/*
* Check if external commands are allowed now.
*/
if (can_end_termcap_mode(TRUE) == FALSE)
return;
/*
* Check if ":!start" is used.
*/
if (cmd)
winstart = (STRNICMP(cmd, "start ", 6) == 0);
#endif
/*
* For autocommands we want to get the output on the current screen, to
* avoid having to type return below.
*/
msg_putchar('\r'); /* put cursor at start of line */
#ifdef AUTOCMD
if (!autocmd_busy)
#endif
{
#ifdef WIN32
if (!winstart)
#endif
stoptermcap();
}
#ifdef RISCOS
if (!silent)
#endif
msg_putchar('\n'); /* may shift screen one line up */
/* warning message before calling the shell */
if (p_warn
#ifdef AUTOCMD
&& !autocmd_busy
#endif
#ifdef RISCOS
&& !silent
#endif
)
for (buf = firstbuf; buf; buf = buf->b_next)
if (buf_changed(buf))
{
#ifdef USE_GUI_WIN32
if (!winstart)
starttermcap(); /* don't want a message box here */
#endif
MSG_PUTS("[No write since last change]\n");
#ifdef USE_GUI_WIN32
if (!winstart)
stoptermcap();
#endif
break;
}
/* This windgoto is required for when the '\n' resulted in a "delete line 1"
* command to the terminal. */
if (!swapping_screen())
windgoto(msg_row, msg_col);
cursor_on();
(void)call_shell(cmd, SHELL_COOKED | flags);
need_check_timestamps = TRUE;
/*
* put the message cursor at the end of the screen, avoids wait_return() to
* overwrite the text that the external command showed
*/
if (!swapping_screen())
{
msg_row = Rows - 1;
msg_col = 0;
}
#ifdef AUTOCMD
if (autocmd_busy)
must_redraw = CLEAR;
else
#endif
{
/*
* For ":sh" there is no need to call wait_return(), just redraw.
* Also for the Win32 GUI (the output is in a console window).
* Otherwise there is probably text on the screen that the user wants
* to read before redrawing, so call wait_return().
*/
#ifndef USE_GUI_WIN32
# ifdef WIN32
if ((cmd == NULL) || (winstart && !need_wait_return))
{
must_redraw = CLEAR;
# elif defined(RISCOS)
if (cmd == NULL || silent)
{
if (!silent)
must_redraw = CLEAR;
# else
if (cmd == NULL)
{
must_redraw = CLEAR;
# endif
#endif
need_wait_return = FALSE;
dont_wait_return = TRUE;
#ifndef USE_GUI_WIN32
}
else
{
/*
* If we switch screens when starttermcap() is called, we really
* want to wait for "hit return to continue".
*/
save_nwr = no_wait_return;
if (swapping_screen())
no_wait_return = FALSE;
#ifdef AMIGA
wait_return(term_console ? -1 : TRUE); /* see below */
#else
wait_return(TRUE);
#endif
no_wait_return = save_nwr;
}
#endif /* USE_GUI_WIN32 */
#ifdef WIN32
if (!winstart) /*if winstart==TRUE, never stopped termcap!*/
#endif
starttermcap(); /* start termcap if not done by wait_return() */
/*
* In an Amiga window redrawing is caused by asking the window size.
* If we got an interrupt this will not work. The chance that the
* window size is wrong is very small, but we need to redraw the
* screen. Don't do this if ':' hit in wait_return(). THIS IS UGLY
* but it saves an extra redraw.
*/
#ifdef AMIGA
if (skip_redraw) /* ':' hit in wait_return() */
must_redraw = CLEAR;
else if (term_console)
{
OUT_STR("\033[0 q"); /* get window size */
if (got_int)
must_redraw = CLEAR; /* if got_int is TRUE, redraw needed */
else
must_redraw = 0; /* no extra redraw needed */
}
#endif /* AMIGA */
}
/* display any error messages now */
mch_display_error();
}
/*
* do_filter: filter lines through a command given by the user
*
* We use temp files and the call_shell() routine here. This would normally
* be done using pipes on a UNIX machine, but this is more portable to
* non-unix machines. The call_shell() routine needs to be able
* to deal with redirection somehow, and should handle things like looking
* at the PATH env. variable, and adding reasonable extensions to the
* command name given by the user. All reasonable versions of call_shell()
* do this.
* We use input redirection if do_in is TRUE.
* We use output redirection if do_out is TRUE.
*/
static void
do_filter(line1, line2, buff, do_in, do_out)
linenr_t line1, line2;
char_u *buff;
int do_in, do_out;
{
char_u *itmp = NULL;
char_u *otmp = NULL;
linenr_t linecount;
FPOS cursor_save;
#ifdef AUTOCMD
BUF *old_curbuf = curbuf;
#endif
if (*buff == NUL) /* no filter command */
return;
#ifdef WIN32
/*
* Check if external commands are allowed now.
*/
if (can_end_termcap_mode(TRUE) == FALSE)
return;
#endif
cursor_save = curwin->w_cursor;
linecount = line2 - line1 + 1;
curwin->w_cursor.lnum = line1;
curwin->w_cursor.col = 0;
changed_line_abv_curs();
invalidate_botline();
/*
* 1. Form temp file names
* 2. Write the lines to a temp file
* 3. Run the filter command on the temp file
* 4. Read the output of the command into the buffer
* 5. Delete the original lines to be filtered
* 6. Remove the temp files
*/
if ((do_in && (itmp = vim_tempname('i')) == NULL) ||
(do_out && (otmp = vim_tempname('o')) == NULL))
{
emsg(e_notmp);
goto filterend;
}
/*
* The writing and reading of temp files will not be shown.
* Vi also doesn't do this and the messages are not very informative.
*/
++no_wait_return; /* don't call wait_return() while busy */
if (do_in && buf_write(curbuf, itmp, NULL, line1, line2,
FALSE, FALSE, FALSE, TRUE) == FAIL)
{
msg_putchar('\n'); /* keep message from buf_write() */
--no_wait_return;
(void)emsg2(e_notcreate, itmp); /* will call wait_return */
goto filterend;
}
#ifdef AUTOCMD
if (curbuf != old_curbuf)
goto filterend;
#endif
if (!do_out)
msg_putchar('\n');
#if (defined(UNIX) && !defined(ARCHIE)) || defined(OS2)
/*
* put braces around the command (for concatenated commands)
*/
sprintf((char *)IObuff, "(%s)", (char *)buff);
if (do_in)
{
STRCAT(IObuff, " < ");
STRCAT(IObuff, itmp);
}
#else
/*
* for shells that don't understand braces around commands, at least allow
* the use of commands in a pipe.
*/
STRCPY(IObuff, buff);
if (do_in)
{
char_u *p;
/*
* If there is a pipe, we have to put the '<' in front of it.
* Don't do this when 'shellquote' is not empty, otherwise the
* redirection would be inside the quotes.
*/
p = vim_strchr(IObuff, '|');
if (p && *p_shq == NUL)
*p = NUL;
#ifdef RISCOS
STRCAT(IObuff, " { < "); /* Use RISC OS notation for input. */
STRCAT(IObuff, itmp);
STRCAT(IObuff, " } ");
#else
STRCAT(IObuff, " <"); /* " < " causes problems on Amiga */
STRCAT(IObuff, itmp);
#endif
p = vim_strchr(buff, '|');
if (p && *p_shq == NUL)
STRCAT(IObuff, p);
}
#endif
if (do_out)
{
char_u *p;
if ((p = vim_strchr(p_srr, '%')) != NULL && p[1] == 's')
{
p = IObuff + STRLEN(IObuff);
*p++ = ' '; /* not really needed? Not with sh, ksh or bash */
sprintf((char *)p, (char *)p_srr, (char *)otmp);
}
else
sprintf((char *)IObuff + STRLEN(IObuff),
#ifndef RISCOS
" %s%s", /* " %s %s" causes problems on Amiga */
#else
" %s %s", /* But is needed for RISC OS */
#endif
(char *)p_srr, (char *)otmp);
}
windgoto((int)Rows - 1, 0);
cursor_on();
/*
* When not redirecting the output the command can write anything to the
* screen. If 'shellredir' is equal to ">", screen may be messed up by
* stderr output of external command. Clear the screen later.
* If do_in is FALSE, this could be something like ":r !cat", which may
* also mess up the screen, clear it later.
*/
if (!do_out || STRCMP(p_srr, ">") == 0 || !do_in)
must_redraw = CLEAR;
else
redraw_later(NOT_VALID);
/*
* When call_shell() fails wait_return() is called to give the user a
* chance to read the error messages. Otherwise errors are ignored, so you
* can see the error messages from the command that appear on stdout; use
* 'u' to fix the text
* Switch to cooked mode when not redirecting stdin, avoids that something
* like ":r !cat" hangs.
* Pass on the SHELL_DOOUT flag when the output is being redirected.
*/
if (call_shell(IObuff, SHELL_FILTER | SHELL_COOKED |
(do_out ? SHELL_DOOUT : 0)))
{
must_redraw = CLEAR;
wait_return(FALSE);
}
need_check_timestamps = TRUE;
if (do_out)
{
if (u_save((linenr_t)(line2), (linenr_t)(line2 + 1)) == FAIL)
{
goto error;
}
if (readfile(otmp, NULL, line2, (linenr_t)0, (linenr_t)MAXLNUM,
READ_FILTER) == FAIL)
{
msg_putchar('\n');
emsg2(e_notread, otmp);
goto error;
}
#ifdef AUTOCMD
if (curbuf != old_curbuf)
goto filterend;
#endif
if (do_in)
{
/*
* Put cursor on first filtered line for ":range!cmd".
* Adjust '[ and '] (set by buf_write()).
*/
curwin->w_cursor.lnum = line1;
del_lines(linecount, TRUE, TRUE);
curbuf->b_op_start.lnum -= linecount; /* adjust '[ */
curbuf->b_op_end.lnum -= linecount; /* adjust '] */
write_lnum_adjust(-linecount); /* adjust last line
for next write */
}
else
{
/*
* Put cursor on last new line for ":r !cmd".
*/
curwin->w_cursor.lnum = curbuf->b_op_end.lnum;
linecount = curbuf->b_op_end.lnum - curbuf->b_op_start.lnum + 1;
}
beginline(BL_WHITE | BL_FIX); /* cursor on first non-blank */
--no_wait_return;
if (linecount > p_report)
{
if (do_in)
{
sprintf((char *)msg_buf, "%ld lines filtered", (long)linecount);
if (msg(msg_buf) && !msg_scroll)
{
keep_msg = msg_buf; /* display message after redraw */
keep_msg_attr = 0;
}
}
else
msgmore((long)linecount);
}
}
else
{
error:
/* put cursor back in same position for ":w !cmd" */
curwin->w_cursor = cursor_save;
--no_wait_return;
wait_return(FALSE);
}
filterend:
#ifdef AUTOCMD
if (curbuf != old_curbuf)
{
--no_wait_return;
EMSG("*Filter* Autocommands must not change current buffer");
}
#endif
if (itmp != NULL)
mch_remove(itmp);
if (otmp != NULL)
mch_remove(otmp);
vim_free(itmp);
vim_free(otmp);
}
#ifdef VIMINFO
static int no_viminfo __ARGS((void));
static int viminfo_errcnt;
static int
no_viminfo()
{
/* "vim -i NONE" does not read or write a viminfo file */
return (use_viminfo != NULL && STRCMP(use_viminfo, "NONE") == 0);
}
/*
* Report an error for reading a viminfo file.
* Count the number of errors. When there are more than 10, return TRUE.
*/
int
viminfo_error(message, line)
char *message;
char_u *line;
{
sprintf((char *)IObuff, "viminfo: %s in line: ", message);
STRNCAT(IObuff, line, IOSIZE - STRLEN(IObuff));
emsg(IObuff);
if (++viminfo_errcnt >= 10)
{
EMSG("viminfo: Too many errors, skipping rest of file");
return TRUE;
}
return FALSE;
}
/*
* read_viminfo() -- Read the viminfo file. Registers etc. which are already
* set are not over-written unless force is TRUE. -- webb
*/
int
read_viminfo(file, want_info, want_marks, forceit)
char_u *file;
int want_info;
int want_marks;
int forceit;
{
FILE *fp;
if (no_viminfo())
return FAIL;
file = viminfo_filename(file); /* may set to default if NULL */
if ((fp = fopen((char *)file, READBIN)) == NULL)
return FAIL;
if (p_verbose > 0)
smsg((char_u *)"Reading viminfo file \"%s\"%s%s", file,
want_info ? " info" : "",
want_marks ? " marks" : "");
viminfo_errcnt = 0;
do_viminfo(fp, NULL, want_info, want_marks, forceit);
fclose(fp);
return OK;
}
/*
* write_viminfo() -- Write the viminfo file. The old one is read in first so
* that effectively a merge of current info and old info is done. This allows
* multiple vims to run simultaneously, without losing any marks etc. If
* forceit is TRUE, then the old file is not read in, and only internal info is
* written to the file. -- webb
*/
void
write_viminfo(file, forceit)
char_u *file;
int forceit;
{
FILE *fp_in = NULL; /* input viminfo file, if any */
FILE *fp_out = NULL; /* output viminfo file */
char_u *tempname = NULL; /* name of temp viminfo file */
struct stat st_new; /* stat() of potential new file */
char_u *wp;
#ifdef UNIX
int shortname = FALSE; /* use 8.3 file name */
mode_t umask_save;
struct stat st_old; /* stat() of existing viminfo file */
#endif
if (no_viminfo())
return;
file = viminfo_filename(file); /* may set to default if NULL */
file = vim_strsave(file); /* make a copy, don't want NameBuff */
if (file != NULL)
{
fp_in = fopen((char *)file, READBIN);
if (fp_in == NULL)
{
/* if it does exist, but we can't read it, don't try writing */
if (stat((char *)file, &st_new) == 0)
goto end;
#ifdef UNIX
/*
* For Unix we create the .viminfo non-accessible for others,
* because it may contain text from non-accessible documents.
*/
umask_save = umask(077);
#endif
fp_out = fopen((char *)file, WRITEBIN);
#ifdef UNIX
(void)umask(umask_save);
#endif
}
else
{
/*
* There is an existing viminfo file. Create a temporary file to
* write the new viminfo into, in the same directory as the
* existing viminfo file, which will be renamed later.
*/
#ifdef UNIX
/*
* For Unix we check the owner of the file. It's not very nice to
* overwrite a user's viminfo file after a "su root", with a
* viminfo file that the user can't read.
*/
st_old.st_dev = st_old.st_ino = 0;
st_old.st_mode = 0600;
if (stat((char *)file, &st_old) == 0 && getuid() &&
!(st_old.st_uid == getuid()
? (st_old.st_mode & 0200)
: (st_old.st_gid == getgid()
? (st_old.st_mode & 0020)
: (st_old.st_mode & 0002))))
{
int tt;
/* avoid a wait_return for this message, it's annoying */
tt = msg_didany;
EMSG2("Viminfo file is not writable: %s", file);
msg_didany = tt;
goto end;
}
#endif
/*
* Make tempname.
* May try twice: Once normal and once with shortname set, just in
* case somebody puts his viminfo file in an 8.3 filesystem.
*/
for (;;)
{
tempname = buf_modname(
#ifdef UNIX
shortname,
#else
# ifdef SHORT_FNAME
TRUE,
# else
# ifdef USE_GUI_WIN32
gui_is_win32s(),
# else
FALSE,
# endif
# endif
#endif
file,
#ifdef VMS
(char_u *)"-tmp",
#else
# ifdef RISCOS
(char_u *)"/tmp",
# else
(char_u *)".tmp",
# endif
#endif
FALSE);
if (tempname == NULL) /* out of memory */
break;
/*
* Check if tempfile already exists. Never overwrite an
* existing file!
*/
if (stat((char *)tempname, &st_new) == 0)
{
#ifdef UNIX
/*
* Check if tempfile is same as original file. May happen
* when modname gave the same file back. E.g. silly
* link, or file name-length reached. Try again with
* shortname set.
*/
if (!shortname && st_new.st_dev == st_old.st_dev &&
st_new.st_ino == st_old.st_ino)
{
vim_free(tempname);
tempname = NULL;
shortname = TRUE;
continue;
}
#endif
/*
* Try another name. Change one character, just before
* the extension. This should also work for an 8.3
* file name, when after adding the extension it still is
* the same file as the original.
*/
wp = tempname + STRLEN(tempname) - 5;
if (wp < gettail(tempname)) /* empty file name? */
wp = gettail(tempname);
for (*wp = 'z'; stat((char *)tempname, &st_new) == 0; --*wp)
{
/*
* They all exist? Must be something wrong! Don't
* write the viminfo file then.
*/
if (*wp == 'a')
{
vim_free(tempname);
tempname = NULL;
break;
}
}
}
break;
}
if (tempname != NULL)
{
fp_out = fopen((char *)tempname, WRITEBIN);
/*
* If we can't create in the same directory, try creating a
* "normal" temp file.
*/
if (fp_out == NULL)
{
vim_free(tempname);
if ((tempname = vim_tempname('o')) != NULL)
fp_out = fopen((char *)tempname, WRITEBIN);
}
#ifdef UNIX
/*
* Set file protection same as original file, but strip s-bit
* and make sure the owner can read/write it.
*/
if (fp_out != NULL)
{
(void)mch_setperm(tempname,
(long)((st_old.st_mode & 0777) | 0600));
/* this only works for root: */
(void)chown((char *)tempname, st_old.st_uid, st_old.st_gid);
}
#endif
}
}
}
/*
* Check if the new viminfo file can be written to.
*/
if (file == NULL || fp_out == NULL)
{
EMSG2("Can't write viminfo file %s!", file == NULL ? (char_u *)"" :
fp_in == NULL ? file : tempname);
if (fp_in != NULL)
fclose(fp_in);
goto end;
}
if (p_verbose > 0)
smsg((char_u *)"Writing viminfo file \"%s\"", file);
viminfo_errcnt = 0;
do_viminfo(fp_in, fp_out, !forceit, !forceit, FALSE);
fclose(fp_out); /* errors are ignored !? */
if (fp_in != NULL)
{
fclose(fp_in);
/*
* In case of an error, don't overwrite the original viminfo file.
*/
if (viminfo_errcnt || vim_rename(tempname, file) == -1)
mch_remove(tempname);
}
end:
vim_free(file);
vim_free(tempname);
}
/*
* Get the viminfo file name to use.
* If "file" is given and not empty, use it (has already been expanded by
* cmdline functions).
* Otherwise use "-i file_name", value from 'viminfo' or the default, and
* expand environment variables.
*/
static char_u *
viminfo_filename(file)
char_u *file;
{
if (file == NULL || *file == NUL)
{
if (use_viminfo != NULL)
file = use_viminfo;
else if ((file = find_viminfo_parameter('n')) == NULL || *file == NUL)
{
#ifdef VIMINFO_FILE2
/* don't use $HOME when not defined (turned into "c:/"!). */
if (mch_getenv((char_u *)"HOME") == NULL)
{
/* don't use $VIM when not available. */
expand_env((char_u *)"$VIM", NameBuff, MAXPATHL);
if (STRCMP("$VIM", NameBuff) != 0) /* $VIM was expanded */
file = (char_u *)VIMINFO_FILE2;
else
file = (char_u *)VIMINFO_FILE;
}
else
#endif
file = (char_u *)VIMINFO_FILE;
}
expand_env(file, NameBuff, MAXPATHL);
return NameBuff;
}
return file;
}
/*
* do_viminfo() -- Should only be called from read_viminfo() & write_viminfo().
*/
static void
do_viminfo(fp_in, fp_out, want_info, want_marks, force_read)
FILE *fp_in;
FILE *fp_out;
int want_info;
int want_marks;
int force_read;
{
int count = 0;
int eof = FALSE;
char_u *line;
if ((line = alloc(LSIZE)) == NULL)
return;
if (fp_in != NULL)
{
if (want_info)
eof = read_viminfo_up_to_marks(line, fp_in, force_read,
fp_out != NULL);
else
/* Skip info, find start of marks */
while (!(eof = vim_fgets(line, LSIZE, fp_in)) && line[0] != '>')
;
}
if (fp_out != NULL)
{
/* Write the info: */
fprintf(fp_out, "# This viminfo file was generated by vim\n");
fprintf(fp_out, "# You may edit it if you're careful!\n\n");
write_viminfo_search_pattern(fp_out);
write_viminfo_sub_string(fp_out);
write_viminfo_history(fp_out);
write_viminfo_registers(fp_out);
write_viminfo_filemarks(fp_out);
write_viminfo_bufferlist(fp_out);
count = write_viminfo_marks(fp_out);
}
if (fp_in != NULL && want_marks)
copy_viminfo_marks(line, fp_in, fp_out, count, eof);
vim_free(line);
}
/*
* read_viminfo_up_to_marks() -- Only called from do_viminfo(). Reads in the
* first part of the viminfo file which contains everything but the marks that
* are local to a file. Returns TRUE when end-of-file is reached. -- webb
*/
static int
read_viminfo_up_to_marks(line, fp, forceit, writing)
char_u *line;
FILE *fp;
int forceit;
int writing;
{
int eof;
prepare_viminfo_history(forceit ? 9999 : 0);
eof = vim_fgets(line, LSIZE, fp);
while (!eof && line[0] != '>')
{
switch (line[0])
{
/* Characters reserved for future expansion, ignored now */
case '+': /* "+40 /path/dir file", for running vim without args */
case '|': /* to be defined */
case '-': /* to be defined */
case '!': /* to be defined */
case '^': /* to be defined */
case '*': /* to be defined */
case '<': /* to be defined */
/* A comment */
case NUL:
case '\r':
case '\n':
case '#':
eof = vim_fgets(line, LSIZE, fp);
break;
case '%': /* entry for buffer list */
eof = read_viminfo_bufferlist(line, fp, writing);
break;
case '"':
eof = read_viminfo_register(line, fp, forceit);
break;
case '/': /* Search string */
case '&': /* Substitute search string */
case '~': /* Last search string, followed by '/' or '&' */
eof = read_viminfo_search_pattern(line, fp, forceit);
break;
case '$':
eof = read_viminfo_sub_string(line, fp, forceit);
break;
case ':':
case '?':
case '=':
case '@':
eof = read_viminfo_history(line, fp);
break;
case '\'':
/* How do we have a file mark when the file is not in the
* buffer list?
*/
eof = read_viminfo_filemark(line, fp, forceit);
break;
default:
if (viminfo_error("Illegal starting char", line))
eof = TRUE;
else
eof = vim_fgets(line, LSIZE, fp);
break;
}
}
finish_viminfo_history();
return eof;
}
/*
* check string read from viminfo file
* remove '\n' at the end of the line
* - replace CTRL-V CTRL-V with CTRL-V
* - replace CTRL-V 'n' with '\n'
*/
void
viminfo_readstring(p)
char_u *p;
{
while (*p != NUL && *p != '\n')
{
if (*p == Ctrl('V'))
{
if (p[1] == 'n')
p[0] = '\n';
mch_memmove(p + 1, p + 2, STRLEN(p));
}
++p;
}
*p = NUL;
}
/*
* write string to viminfo file
* - replace CTRL-V with CTRL-V CTRL-V
* - replace '\n' with CTRL-V 'n'
* - add a '\n' at the end
*/
void
viminfo_writestring(fd, p)
FILE *fd;
char_u *p;
{
int c;
while ((c = *p++) != NUL)
{
if (c == Ctrl('V') || c == '\n')
{
putc(Ctrl('V'), fd);
if (c == '\n')
c = 'n';
}
putc(c, fd);
}
putc('\n', fd);
}
#endif /* VIMINFO */
/*
* Implementation of ":fixdel", also used by get_stty().
* resulting
* ^? ^H
* not ^? ^?
*/
void
do_fixdel()
{
char_u *p;
p = find_termcode((char_u *)"kb");
add_termcode((char_u *)"kD", p != NULL && *p == 0x7f ?
(char_u *)"\010" : (char_u *)"\177");
}
void
print_line_no_prefix(lnum, use_number)
linenr_t lnum;
int use_number;
{
char_u numbuf[20];
if (curwin->w_p_nu || use_number)
{
sprintf((char *)numbuf, "%7ld ", (long)lnum);
msg_puts_attr(numbuf, hl_attr(HLF_N)); /* Highlight line nrs */
}
msg_prt_line(ml_get(lnum));
}
/*
* Print a text line. Also in silent mode ("ex -s").
*/
void
print_line(lnum, use_number)
linenr_t lnum;
int use_number;
{
int save_silent = silent_mode;
silent_mode = FALSE;
msg_start();
print_line_no_prefix(lnum, use_number);
if (save_silent)
{
msg_putchar('\n');
cursor_on(); /* msg_start() switches it off */
out_flush();
silent_mode = save_silent;
}
}
/*
* Implementation of ":file[!] [fname]".
*/
void
do_file(arg, forceit)
char_u *arg;
int forceit;
{
char_u *fname, *sfname, *xfname;
BUF *buf;
if (*arg != NUL)
{
#ifdef AUTOCMD
buf = curbuf;
apply_autocmds(EVENT_BUFFILEPRE, NULL, NULL, FALSE, curbuf);
/* buffer changed, don't change name now */
if (buf != curbuf)
return;
#endif
/*
* The name of the current buffer will be changed.
* A new buffer entry needs to be made to hold the old
* file name, which will become the alternate file name.
*/
fname = curbuf->b_ffname;
sfname = curbuf->b_sfname;
xfname = curbuf->b_fname;
curbuf->b_ffname = NULL;
curbuf->b_sfname = NULL;
if (setfname(arg, NULL, TRUE) == FAIL)
{
curbuf->b_ffname = fname;
curbuf->b_sfname = sfname;
return;
}
curbuf->b_notedited = TRUE;
buf = buflist_new(fname, xfname, curwin->w_cursor.lnum, FALSE);
if (buf != NULL)
curwin->w_alt_fnum = buf->b_fnum;
vim_free(fname);
vim_free(sfname);
#ifdef AUTOCMD
apply_autocmds(EVENT_BUFFILEPOST, NULL, NULL, FALSE, curbuf);
#endif
}
/* print full file name if :cd used */
fileinfo(FALSE, FALSE, forceit);
}
/*
* Do the Ex mode :insert and :append commands.
* "getline" can be NULL, in which case a line is obtained from the user.
*/
void
do_append(lnum, getline, cookie)
linenr_t lnum;
char_u *(*getline) __ARGS((int, void *, int));
void *cookie; /* argument for getline() */
{
char_u *theline;
int did_undo = FALSE;
int lfirst = lnum;
State = INSERT; /* behave like in Insert mode */
while (1)
{
msg_scroll = TRUE;
need_wait_return = FALSE;
if (getline == NULL)
theline = getcmdline(NUL, 0L, 0);
else
theline = getline(NUL, cookie, 0);
lines_left = Rows - 1;
if (theline == NULL || (theline[0] == '.' && theline[1] == NUL))
break;
if (!did_undo && u_save(lnum, lnum + 1) == FAIL)
break;
did_undo = TRUE;
mark_adjust(lnum + 1, (linenr_t)MAXLNUM, 1L, 0L);
ml_append(lnum, theline, (colnr_t)0, FALSE);
changed();
vim_free(theline);
++lnum;
}
State = NORMAL;
/* "start" is set to lfirst+1 unless that position is invalid (when
* lfirst pointed to the end of the buffer and nothig was appended)
* "end" is set to lnum when something has been appended, otherwise
* it is the same than "start" -- Acevedo */
curbuf->b_op_start.lnum = (lfirst < curbuf->b_ml.ml_line_count) ?
lfirst + 1 : curbuf->b_ml.ml_line_count;
curbuf->b_op_end.lnum = (lfirst < lnum) ? lnum : curbuf->b_op_start.lnum;
curbuf->b_op_start.col = curbuf->b_op_end.col = 0;
curwin->w_cursor.lnum = lnum;
check_cursor_lnum();
beginline(BL_SOL | BL_FIX);
changed_line_abv_curs();
invalidate_botline();
dont_wait_return = TRUE; /* don't use wait_return() now */
need_wait_return = FALSE;
update_screen(NOT_VALID);
}
/*
* Do the Ex mode :change command.
* "getline" can be NULL, in which case a line is obtained from the user.
*/
void
do_change(start, end, getline, cookie)
linenr_t start;
linenr_t end;
char_u *(*getline) __ARGS((int, void *, int));
void *cookie; /* argument for getline() */
{
if (end >= start && u_save(start - 1, end + 1) == FAIL)
return;
mark_adjust(start, end, (long)MAXLNUM, (long)(start - end - 1));
while (end >= start)
{
if (curbuf->b_ml.ml_flags & ML_EMPTY) /* nothing to delete */
break;
ml_delete(start, FALSE);
changed();
end--;
}
do_append(start - 1, getline, cookie);
}
void
do_z(line, arg)
linenr_t line;
char_u *arg;
{
char_u *x;
int bigness = curwin->w_height - 3;
char_u kind;
int minus = 0;
linenr_t start, end, curs, i;
if (bigness < 1)
bigness = 1;
x = arg;
if (*x == '-' || *x == '+' || *x == '=' || *x == '^' || *x == '.')
x++;
if (*x != 0)
{
if (!isdigit(*x))
{
EMSG("non-numeric argument to :z");
return;
}
else
bigness = atoi((char *)x);
}
kind = *arg;
switch (kind)
{
case '-':
start = line - bigness;
end = line;
curs = line;
break;
case '=':
start = line - bigness / 2 + 1;
end = line + bigness / 2 - 1;
curs = line;
minus = 1;
break;
case '^':
start = line - bigness * 2;
end = line - bigness;
curs = line - bigness;
break;
case '.':
start = line - bigness / 2;
end = line + bigness / 2;
curs = end;
break;
default: /* '+' */
start = line;
end = line + bigness;
curs = end;
break;
}
if (start < 1)
start = 1;
if (end > curbuf->b_ml.ml_line_count)
end = curbuf->b_ml.ml_line_count;
if (curs > curbuf->b_ml.ml_line_count)
curs = curbuf->b_ml.ml_line_count;
for (i = start; i <= end; i++)
{
int j;
if (minus && (i == line))
{
msg_putchar('\n');
for (j = 1; j < Columns; j++)
msg_putchar('-');
}
print_line(i, FALSE);
if (minus && (i == line))
{
msg_putchar('\n');
for (j = 1; j < Columns; j++)
msg_putchar('-');
}
}
curwin->w_cursor.lnum = curs;
}
/*
* Check if the restricted flag is set.
* If so, give an error message and return TRUE.
* Otherwise, return FALSE.
*/
int
check_restricted()
{
if (restricted)
{
EMSG("Shell commands not allowed in rvim");
return TRUE;
}
return FALSE;
}
/*
* Check if the secure flag is set (.exrc or .vimrc in current directory).
* If so, give an error message and return TRUE.
* Otherwise, return FALSE.
*/
int
check_secure()
{
if (secure)
{
secure = 2;
emsg(e_curdir);
return TRUE;
}
return FALSE;
}
static char_u *old_sub = NULL; /* previous substitute pattern */
/*
* When ":global" is used to number of substitutions and changed lines is
* accumulated until it's finished.
*/
static long sub_nsubs; /* total number of substitutions */
static linenr_t sub_nlines; /* total number of lines changed */
/* do_sub()
*
* Perform a substitution from line eap->line1 to line eap->line2 using the
* command pointed to by eap->arg which should be of the form:
*
* /pattern/substitution/{flags}
*
* The usual escapes are supported as described in the regexp docs.
*/
void
do_sub(eap)
EXARG *eap;
{
linenr_t lnum;
long i;
char_u *ptr;
char_u *old_line;
vim_regexp *prog;
static int do_all = FALSE; /* do multiple substitutions per line */
static int do_ask = FALSE; /* ask for confirmation */
int do_error = TRUE; /* if false, ignore errors */
int do_print = FALSE; /* print last line with subst. */
int do_ic = 0; /* ignore case flag */
char_u *pat = NULL, *sub = NULL; /* init for GCC */
int delimiter;
int sublen;
int got_quit = FALSE;
int got_match = FALSE;
int temp;
int which_pat;
char_u *cmd;
int save_reg_ic;
int save_State;
cmd = eap->arg;
if (!global_busy)
{
sub_nsubs = 0;
sub_nlines = 0;
}
#ifdef FKMAP /* reverse the flow of the Farsi characters */
if (p_altkeymap && curwin->w_p_rl)
lrF_sub(cmd);
#endif
if (eap->cmdidx == CMD_tilde)
which_pat = RE_LAST; /* use last used regexp */
else
which_pat = RE_SUBST; /* use last substitute regexp */
/* new pattern and substitution */
if (eap->cmd[0] == 's' && *cmd != NUL && !vim_iswhite(*cmd)
&& vim_strchr((char_u *)"0123456789gcr|\"", *cmd) == NULL)
{
/* don't accept alphanumeric for separator */
if (isalpha(*cmd))
{
EMSG("Regular expressions can't be delimited by letters");
return;
}
/*
* undocumented vi feature:
* "\/sub/" and "\?sub?" use last used search pattern (almost like
* //sub/r). "\&sub&" use last substitute pattern (like //sub/).
*/
if (*cmd == '\\')
{
++cmd;
if (vim_strchr((char_u *)"/?&", *cmd) == NULL)
{
emsg(e_backslash);
return;
}
if (*cmd != '&')
which_pat = RE_SEARCH; /* use last '/' pattern */
pat = (char_u *)""; /* empty search pattern */
delimiter = *cmd++; /* remember delimiter character */
}
else /* find the end of the regexp */
{
which_pat = RE_LAST; /* use last used regexp */
delimiter = *cmd++; /* remember delimiter character */
pat = cmd; /* remember start of search pat */
cmd = skip_regexp(cmd, delimiter, p_magic);
if (cmd[0] == delimiter) /* end delimiter found */
*cmd++ = NUL; /* replace it with a NUL */
}
/*
* Small incompatibility: vi sees '\n' as end of the command, but in
* Vim we want to use '\n' to find/substitute a NUL.
*/
sub = cmd; /* remember the start of the substitution */
while (cmd[0])
{
if (cmd[0] == delimiter) /* end delimiter found */
{
*cmd++ = NUL; /* replace it with a NUL */
break;
}
if (cmd[0] == '\\' && cmd[1] != 0) /* skip escaped characters */
++cmd;
++cmd;
}
if (!eap->skip)
{
vim_free(old_sub);
old_sub = vim_strsave(sub);
}
}
else if (!eap->skip) /* use previous pattern and substitution */
{
if (old_sub == NULL) /* there is no previous command */
{
emsg(e_nopresub);
return;
}
pat = NULL; /* search_regcomp() will use previous pattern */
sub = old_sub;
}
/*
* find trailing options
*/
if (!p_ed)
{
if (p_gd) /* default is global on */
do_all = TRUE;
else
do_all = FALSE;
do_ask = FALSE;
}
while (*cmd)
{
/*
* Note that 'g' and 'c' are always inverted, also when p_ed is off.
* 'r' is never inverted.
*/
if (*cmd == 'g')
do_all = !do_all;
else if (*cmd == 'c')
do_ask = !do_ask;
else if (*cmd == 'e')
do_error = !do_error;
else if (*cmd == 'r') /* use last used regexp */
which_pat = RE_LAST;
else if (*cmd == 'p')
do_print = TRUE;
else if (*cmd == 'i') /* ignore case */
do_ic = 'i';
else if (*cmd == 'I') /* don't ignore case */
do_ic = 'I';
else
break;
++cmd;
}
/*
* check for a trailing count
*/
cmd = skipwhite(cmd);
if (isdigit(*cmd))
{
i = getdigits(&cmd);
if (i <= 0 && !eap->skip && do_error)
{
emsg(e_zerocount);
return;
}
eap->line1 = eap->line2;
eap->line2 += i - 1;
}
/*
* check for trailing command or garbage
*/
cmd = skipwhite(cmd);
if (*cmd && *cmd != '\"') /* if not end-of-line or comment */
{
eap->nextcmd = check_nextcmd(cmd);
if (eap->nextcmd == NULL)
{
emsg(e_trailing);
return;
}
}
if (eap->skip) /* not executing commands, only parsing */
return;
if ((prog = search_regcomp(pat, RE_SUBST, which_pat, SEARCH_HIS)) == NULL)
{
if (do_error)
emsg(e_invcmd);
return;
}
/* the 'i' or 'I' flag overrules 'ignorecase' and 'smartcase' */
if (do_ic == 'i')
reg_ic = TRUE;
else if (do_ic == 'I')
reg_ic = FALSE;
/*
* ~ in the substitute pattern is replaced with the old pattern.
* We do it here once to avoid it to be replaced over and over again.
*/
sub = regtilde(sub, p_magic);
old_line = NULL;
for (lnum = eap->line1; lnum <= eap->line2 && !(got_int || got_quit);
++lnum)
{
ptr = ml_get(lnum);
if (vim_regexec(prog, ptr, TRUE)) /* a match on this line */
{
char_u *new_end, *new_start = NULL;
char_u *old_match, *old_copy;
char_u *prev_old_match = NULL;
char_u *p1;
int did_sub = FALSE;
int match, lastone;
unsigned len, needed_len;
unsigned new_start_len = 0;
/* make a copy of the line, so it won't be taken away when updating
the screen */
if ((old_line = vim_strsave(ptr)) == NULL)
continue;
vim_regexec(prog, old_line, TRUE); /* match again on this line to
* update the pointers. TODO:
* remove extra vim_regexec() */
if (!got_match)
{
setpcmark();
got_match = TRUE;
}
old_copy = old_match = old_line;
for (;;) /* loop until nothing more to replace */
{
/*
* Save the position of the last change for the final cursor
* position (just like the real vi).
*/
curwin->w_cursor.lnum = lnum;
curwin->w_cursor.col = (int)(prog->startp[0] - old_line);
changed_cline_bef_curs();
/*
* Match empty string does not count, except for first match.
* This reproduces the strange vi behaviour.
* This also catches endless loops.
*/
if (old_match == prev_old_match && old_match == prog->endp[0])
{
++old_match;
goto skip;
}
old_match = prog->endp[0];
prev_old_match = old_match;
/* update_screen() may change reg_ic: save it */
save_reg_ic = reg_ic;
/* change State to CONFIRM, so that the mouse works properly */
save_State = State;
State = CONFIRM;
#ifdef USE_MOUSE
setmouse(); /* disable mouse in xterm */
#endif
/*
* Loop until 'y', 'n', 'q', CTRL-E or CTRL-Y typed.
*/
while (do_ask)
{
temp = RedrawingDisabled;
RedrawingDisabled = FALSE;
search_match_len = prog->endp[0] - prog->startp[0];
/* invert the matched string
* remove the inversion afterwards */
if (search_match_len == 0)
search_match_len = 1; /* show something! */
highlight_match = TRUE;
update_topline();
validate_cursor();
update_screen(NOT_VALID);
highlight_match = FALSE;
redraw_later(NOT_VALID);
if (msg_row == Rows - 1)
msg_didout = FALSE; /* avoid a scroll-up */
/* write message same highlighting as for wait_return */
smsg_attr(hl_attr(HLF_R),
(char_u *)"replace with %s (y/n/a/q/^E/^Y)?",
sub);
showruler(TRUE);
RedrawingDisabled = temp;
#ifdef USE_GUI_WIN32
dont_scroll = FALSE; /* allow scrolling here */
#endif
++no_mapping; /* don't map this key */
++allow_keys; /* allow special keys */
i = vgetc();
--allow_keys;
--no_mapping;
/* clear the question */
msg_didout = FALSE; /* don't scroll up */
msg_col = 0;
gotocmdline(TRUE);
if (i == 'q' || i == ESC || i == Ctrl('C')
#ifdef UNIX
|| i == intr_char
#endif
)
{
got_quit = TRUE;
break;
}
else if (i == 'n')
goto skip;
else if (i == 'y')
break;
else if (i == 'a')
{
do_ask = FALSE;
break;
}
else if (i == Ctrl('E'))
scrollup_clamp();
else if (i == Ctrl('Y'))
scrolldown_clamp();
}
if (got_quit)
break;
reg_ic = save_reg_ic;
State = save_State;
#ifdef USE_MOUSE
setmouse();
#endif
/* get length of substitution part */
sublen = vim_regsub(prog, sub, old_line, FALSE, p_magic);
if (new_start == NULL)
{
/*
* Get some space for a temporary buffer to do the
* substitution into (and some extra space to avoid
* too many calls to alloc()/free()).
*/
new_start_len = STRLEN(old_copy) + sublen + 25;
if ((new_start = alloc_check(new_start_len)) == NULL)
goto outofmem;
*new_start = NUL;
new_end = new_start;
}
else
{
/*
* Extend the temporary buffer to do the substitution into.
* Avoid an alloc()/free(), it takes a lot of time.
*/
len = STRLEN(new_start);
needed_len = len + STRLEN(old_copy) + sublen + 1;
if (needed_len > new_start_len)
{
needed_len += 20; /* get some extra */
if ((p1 = alloc_check(needed_len)) == NULL)
goto outofmem;
STRCPY(p1, new_start);
vim_free(new_start);
new_start = p1;
new_start_len = needed_len;
}
new_end = new_start + len;
}
/*
* copy the text up to the part that matched
*/
i = prog->startp[0] - old_copy;
mch_memmove(new_end, old_copy, (size_t)i);
new_end += i;
vim_regsub(prog, sub, new_end, TRUE, p_magic);
sub_nsubs++;
did_sub = TRUE;
/*
* Now the trick is to replace CTRL-Ms with a real line break.
* This would make it impossible to insert CTRL-Ms in the text.
* That is the way vi works. In Vim the line break can be
* avoided by preceding the CTRL-M with a CTRL-V. Now you can't
* precede a line break with a CTRL-V, big deal.
*/
while ((p1 = vim_strchr(new_end, CR)) != NULL)
{
if (p1 == new_end || p1[-1] != Ctrl('V'))
{
if (u_inssub(lnum) == OK) /* prepare for undo */
{
*p1 = NUL; /* truncate up to the CR */
mark_adjust(lnum, (linenr_t)MAXLNUM, 1L, 0L);
ml_append(lnum - 1, new_start,
(colnr_t)(p1 - new_start + 1), FALSE);
++lnum;
++eap->line2; /* number of lines increases */
STRCPY(new_start, p1 + 1); /* copy the rest */
new_end = new_start;
}
}
else /* remove CTRL-V */
{
STRCPY(p1 - 1, p1);
new_end = p1;
}
}
/* remember next character to be copied */
old_copy = prog->endp[0];
/*
* continue searching after the match
* prevent endless loop with patterns that match empty strings,
* e.g. :s/$/pat/g or :s/[a-z]* /(&)/g
*/
skip:
match = -1;
lastone = (*old_match == NUL || got_int || got_quit || !do_all);
if (lastone || do_ask ||
(match = vim_regexec(prog, old_match, (int)FALSE)) == 0)
{
if (new_start)
{
/*
* Copy the rest of the line, that didn't match.
* Old_match has to be adjusted, we use the end of the
* line as reference, because the substitute may have
* changed the number of characters.
*/
STRCAT(new_start, old_copy);
i = old_line + STRLEN(old_line) - old_match;
if (u_savesub(lnum) == OK)
ml_replace(lnum, new_start, TRUE);
/* When asking, undo is saved each time, must also set
* changed flag each time. */
if (do_ask)
changed();
#ifdef SYNTAX_HL
/* recompute syntax hl. for this line */
syn_changed(lnum);
#endif
vim_free(old_line); /* free the temp buffer */
old_line = new_start;
new_start = NULL;
old_match = old_line + STRLEN(old_line) - i;
if (old_match < old_line) /* safety check */
{
EMSG("do_sub internal error: old_match < old_line");
old_match = old_line;
}
old_copy = old_line;
}
if (match == -1 && !lastone)
match = vim_regexec(prog, old_match, (int)FALSE);
if (match <= 0) /* quit loop if there is no more match */
break;
}
line_breakcheck();
}
if (did_sub)
++sub_nlines;
vim_free(old_line); /* free the copy of the original line */
old_line = NULL;
}
line_breakcheck();
}
curbuf->b_op_start.lnum = eap->line1;
curbuf->b_op_end.lnum = eap->line2;
curbuf->b_op_start.col = curbuf->b_op_end.col = 0;
outofmem:
vim_free(old_line); /* may have to free an allocated copy of the line */
if (sub_nsubs)
{
changed();
approximate_botline();
if (!global_busy)
{
update_topline();
beginline(BL_WHITE | BL_FIX);
update_screen(NOT_VALID); /* need this to update LineSizes */
if (!do_sub_msg() && do_ask)
MSG("");
}
if (do_print)
print_line(curwin->w_cursor.lnum, FALSE);
}
else if (!global_busy)
{
if (got_int) /* interrupted */
emsg(e_interr);
else if (got_match) /* did find something but nothing substituted */
MSG("");
else if (do_error) /* nothing found */
emsg2(e_patnotf2, pat);
}
vim_free(prog);
}
/*
* Give message for number of substitutions.
* Can also be used after a ":global" command.
* Return TRUE if a message was given.
*/
static int
do_sub_msg()
{
/*
* Only report substitutions when:
* - more than 'report' substitutions
* - command was typed by user, or number of changed lines > 'report'
* - giving messages is not disabled by 'lazyredraw'
*/
if (sub_nsubs > p_report &&
(KeyTyped || sub_nlines > 1 || p_report < 1) &&
messaging())
{
sprintf((char *)msg_buf, "%s%ld substitution%s on %ld line%s",
got_int ? "(Interrupted) " : "",
sub_nsubs, plural(sub_nsubs),
(long)sub_nlines, plural((long)sub_nlines));
if (msg(msg_buf))
{
keep_msg = msg_buf;
keep_msg_attr = 0;
}
return TRUE;
}
if (got_int)
{
emsg(e_interr);
return TRUE;
}
return FALSE;
}
/*
* do_glob(cmd)
*
* Execute a global command of the form:
*
* g/pattern/X : execute X on all lines where pattern matches
* v/pattern/X : execute X on all lines where pattern does not match
*
* where 'X' is an EX command
*
* The command character (as well as the trailing slash) is optional, and
* is assumed to be 'p' if missing.
*
* This is implemented in two passes: first we scan the file for the pattern and
* set a mark for each line that (not) matches. secondly we execute the command
* for each line that has a mark. This is required because after deleting
* lines we do not know where to search for the next match.
*/
void
do_glob(eap)
EXARG *eap;
{
linenr_t lnum; /* line number according to old situation */
linenr_t old_lcount; /* b_ml.ml_line_count before the command */
int ndone;
int type; /* first char of cmd: 'v' or 'g' */
char_u *cmd; /* command argument */
char_u delim; /* delimiter, normally '/' */
char_u *pat;
vim_regexp *prog;
int match;
int which_pat;
if (global_busy)
{
EMSG("Cannot do :global recursive"); /* will increment global_busy */
return;
}
type = *eap->cmd;
cmd = eap->arg;
which_pat = RE_LAST; /* default: use last used regexp */
sub_nsubs = 0;
sub_nlines = 0;
/*
* undocumented vi feature:
* "\/" and "\?": use previous search pattern.
* "\&": use previous substitute pattern.
*/
if (*cmd == '\\')
{
++cmd;
if (vim_strchr((char_u *)"/?&", *cmd) == NULL)
{
emsg(e_backslash);
return;
}
if (*cmd == '&')
which_pat = RE_SUBST; /* use previous substitute pattern */
else
which_pat = RE_SEARCH; /* use previous search pattern */
++cmd;
pat = (char_u *)"";
}
else if (*cmd == NUL)
{
EMSG("Regular expression missing from global");
return;
}
else
{
delim = *cmd; /* get the delimiter */
if (delim)
++cmd; /* skip delimiter if there is one */
pat = cmd; /* remember start of pattern */
cmd = skip_regexp(cmd, delim, p_magic);
if (cmd[0] == delim) /* end delimiter found */
*cmd++ = NUL; /* replace it with a NUL */
}
#ifdef FKMAP /* when in Farsi mode, reverse the character flow */
if (p_altkeymap && curwin->w_p_rl)
lrFswap(pat,0);
#endif
if ((prog = search_regcomp(pat, RE_BOTH, which_pat, SEARCH_HIS)) == NULL)
{
emsg(e_invcmd);
return;
}
/*
* pass 1: set marks for each (not) matching line
*/
ndone = 0;
for (lnum = eap->line1; lnum <= eap->line2 && !got_int; ++lnum)
{
/* a match on this line? */
match = vim_regexec(prog, ml_get(lnum), (int)TRUE);
if ((type == 'g' && match) || (type == 'v' && !match))
{
ml_setmarked(lnum);
ndone++;
}
line_breakcheck();
}
/*
* pass 2: execute the command for each line that has been marked
*/
if (got_int)
MSG(e_interr);
else if (ndone == 0)
smsg(e_patnotf2, pat);
else
{
/*
* Set current position only once for a global command.
* If global_busy is set, setpcmark() will not do anything.
* If there is an error, global_busy will be incremented.
*/
setpcmark();
global_busy = 1;
old_lcount = curbuf->b_ml.ml_line_count;
while (!got_int && (lnum = ml_firstmarked()) != 0 && global_busy == 1)
{
curwin->w_cursor.lnum = lnum;
curwin->w_cursor.col = 0;
if (*cmd == NUL || *cmd == '\n')
do_cmdline((char_u *)"p", NULL, NULL, DOCMD_NOWAIT);
else
do_cmdline(cmd, NULL, NULL, DOCMD_NOWAIT);
ui_breakcheck();
}
global_busy = 0;
adjust_cursor(); /* cursor may be beyond the end of the line */
/*
* Redraw everything. Could use CLEAR, which is faster in some
* situations, but when there are few changes this makes the display
* flicker.
*/
redraw_later(NOT_VALID);
/* If subsitutes done, report number of substitues, otherwise report
* number of extra or deleted lines. */
if (!do_sub_msg())
msgmore(curbuf->b_ml.ml_line_count - old_lcount);
}
ml_clearmarked(); /* clear rest of the marks */
vim_free(prog);
}
#ifdef VIMINFO
int
read_viminfo_sub_string(line, fp, force)
char_u *line;
FILE *fp;
int force;
{
if (old_sub != NULL && force)
vim_free(old_sub);
if (force || old_sub == NULL)
{
viminfo_readstring(line);
old_sub = vim_strsave(line + 1);
}
return vim_fgets(line, LSIZE, fp);
}
void
write_viminfo_sub_string(fp)
FILE *fp;
{
if (get_viminfo_parameter('/') != 0 && old_sub != NULL)
{
fprintf(fp, "\n# Last Substitute String:\n$");
viminfo_writestring(fp, old_sub);
}
}
#endif /* VIMINFO */
/*
* ":help": open a read-only window on the help.txt file
*/
void
do_help(eap)
EXARG *eap;
{
char_u *arg;
FILE *helpfd; /* file descriptor of help file */
int n;
WIN *wp;
int num_matches;
char_u **matches;
int need_free = FALSE;
if (eap != NULL)
{
/*
* A ":help" command ends at the first LF, or at a '|' that is
* followed by some text. Set nextcmd to the following command.
*/
for (arg = eap->arg; *arg; ++arg)
{
if (*arg == '\n' || *arg == '\r' || (*arg == '|' && arg[1] != NUL))
{
*arg++ = NUL;
eap->nextcmd = arg;
break;
}
}
arg = eap->arg;
if (eap->skip) /* not executing commands */
return;
}
else
arg = (char_u *)"";
/*
* If an argument is given, check if there is a match for it.
*/
if (*arg != NUL)
{
n = find_help_tags(arg, &num_matches, &matches);
if (num_matches == 0 || n == FAIL)
{
EMSG2("Sorry, no help for %s", arg);
return;
}
/* The first match is the best match. */
arg = vim_strsave(matches[0]);
need_free = TRUE;
FreeWild(num_matches, matches);
}
#ifdef USE_GUI
need_mouse_correct = TRUE;
#endif
/*
* If there is already a help window open, use that one.
*/
if (!curwin->w_buffer->b_help)
{
for (wp = firstwin; wp != NULL; wp = wp->w_next)
if (wp->w_buffer != NULL && wp->w_buffer->b_help)
break;
if (wp != NULL && wp->w_buffer->b_nwindows > 0)
win_enter(wp, TRUE);
else
{
/*
* There is no help buffer yet.
* Try to open the file specified by the "helpfile" option.
*/
if ((helpfd = fopen((char *)p_hf, READBIN)) == NULL)
{
smsg((char_u *)"Sorry, help file \"%s\" not found", p_hf);
goto erret;
}
fclose(helpfd);
if (win_split(0, FALSE, FALSE) == FAIL)
goto erret;
if (curwin->w_height < p_hh)
win_setheight((int)p_hh);
#ifdef RIGHTLEFT
curwin->w_p_rl = 0; /* help window is left-to-right */
#endif
curwin->w_p_nu = 0; /* no line numbers */
/* Save the values of the options we will change. Do this before
* do_ecmd(), because there could be modelines in the help file */
vim_free(help_save_isk);
help_save_isk = vim_strsave(curbuf->b_p_isk);
help_save_ts = curbuf->b_p_ts;
/*
* open help file (do_ecmd() will set b_help flag, readfile() will
* set b_p_ro flag)
*/
(void)do_ecmd(0, p_hf, NULL, NULL, (linenr_t)0,
ECMD_HIDE + ECMD_SET_HELP);
/* accept all chars for keywords, except ' ', '*', '"', '|' */
set_string_option_direct((char_u *)"isk", -1,
(char_u *)"!-~,^*,^|,^\"", TRUE);
curbuf->b_p_ts = 8;
curwin->w_p_list = FALSE;
check_buf_options(curbuf);
(void)init_chartab(); /* needed because 'isk' changed */
}
}
if (!p_im)
restart_edit = 0; /* don't want insert mode in help file */
if (arg == NULL || *arg == NUL)
{
arg = (char_u *)"help.txt"; /* go to the index */
need_free = FALSE;
}
do_tag(arg, DT_HELP, 1, FALSE, TRUE);
erret:
if (need_free)
vim_free(arg);
}
/*
* Return a heuristic indicating how well the given string matches. The
* smaller the number, the better the match. This is the order of priorities,
* from best match to worst match:
* - Match with least alpha-numeric characters is better.
* - Match with least total characters is better.
* - Match towards the start is better.
* - Match starting with "+" is worse (feature instead of command)
* Assumption is made that the matched_string passed has already been found to
* match some string for which help is requested. webb.
*/
int
help_heuristic(matched_string, offset, wrong_case)
char_u *matched_string;
int offset; /* offset for match */
int wrong_case; /* no matching case */
{
int num_letters;
char_u *p;
num_letters = 0;
for (p = matched_string; *p; p++)
if (isalnum(*p))
num_letters++;
/*
* Multiply the number of letters by 100 to give it a much bigger
* weighting than the number of characters.
* If there only is a match while ignoring case, add 5000.
* If the match starts in the middle of a word, add 10000 to put it
* somewhere in the last half.
* If the match is more than 2 chars from the start, multiply by 200 to
* put it after matches at the start.
*/
if (isalnum(matched_string[offset]) && offset > 0 &&
isalnum(matched_string[offset - 1]))
offset += 10000;
else if (offset > 2)
offset *= 200;
if (wrong_case)
offset += 5000;
if (matched_string[0] == '+')
offset += 100;
return (int)(100 * num_letters + STRLEN(matched_string) + offset);
}
/*
* Compare functions for qsort() below, that checks the help heuristics number
* that has been put after the tagname by find_tags().
*/
static int
#ifdef __BORLANDC__
_RTLENTRYF
#endif
help_compare(s1, s2)
const void *s1;
const void *s2;
{
char *p1;
char *p2;
p1 = *(char **)s1 + strlen(*(char **)s1) + 1;
p2 = *(char **)s2 + strlen(*(char **)s2) + 1;
return strcmp(p1, p2);
}
/*
* Find all help tags matching "arg", sort them and return in matches[], with
* the number of matches in num_matches.
* The matches will be sorted with a "best" match algorithm.
*/
int
find_help_tags(arg, num_matches, matches)
char_u *arg;
int *num_matches;
char_u ***matches;
{
char_u *s, *d;
int i;
static char *(mtable[]) = {"*", "g*", "[*", "]*", ":*",
"/*", "/\\*", "/\\(\\)",
"?", ":?", "?", "\"*",
"[count]", "[quotex]", "[range]",
"[pattern]"};
static char *(rtable[]) = {"star", "gstar", "[star", "]star", ":star",
"/star", "/\\\\star", "/\\\\(\\\\)",
"?", ":?", "?", "quotestar",
"\\[count]", "\\[quotex]", "\\[range]",
"\\[pattern]"};
d = IObuff; /* assume IObuff is long enough! */
/*
* Recognize a few exceptions to the rule. Some strings that contain '*'
* with "star". Otherwise '*' is recognized as a wildcard.
*/
for (i = sizeof(mtable) / sizeof(char *); --i >= 0; )
{
if (STRCMP(arg, mtable[i]) == 0)
{
STRCPY(d, rtable[i]);
break;
}
}
if (i < 0) /* no match in table, replace single characters */
{
for (s = arg; *s; ++s)
{
/*
* Replace "|" with "bar" and '"' with "quote" to match the name of
* the tags for these commands.
* Replace "*" with ".*" and "?" with "." to match command line
* completion.
* Insert a backslash before '~', '$' and '.' to avoid their
* special meaning.
*/
if (d - IObuff > IOSIZE - 10) /* getting too long!? */
break;
switch (*s)
{
case '|': STRCPY(d, "bar");
d += 3;
continue;
case '\"': STRCPY(d, "quote");
d += 5;
continue;
case '*': *d++ = '.';
break;
case '?': *d++ = '.';
continue;
case '$':
case '.':
case '~': *d++ = '\\';
break;
}
/*
* Replace "^x" by "CTRL-X". Don't do this for "^_" to make
* ":help i_^_CTRL-D" work.
*/
if (*s < ' ' || (*s == '^' && s[1] && s[1] != '_')) /* ^x */
{
if (d > IObuff && d[-1] != '_')
*d++ = '_'; /* prepend a '_' */
STRCPY(d, "CTRL-");
d += 5;
if (*s < ' ')
*d++ = *s + '@';
else
*d++ = *++s;
if (s[1] != NUL && s[1] != '_')
*d++ = '_'; /* append a '_' */
continue;
}
else if (*s == '^') /* "^" or "CTRL-^" or "^_" */
*d++ = '\\';
/*
* Insert a backslash before a backslash after a slash, for search
* pattern tags: "/\|" --> "/\\|".
*/
else if (s[0] == '\\' && s[1] != '\\' &&
*arg == '/' && s == arg + 1)
*d++ = '\\';
*d++ = *s;
/*
* If tag starts with ', toss everything after a second '. Fixes
* CTRL-] on 'option'. (would include the trailing '.').
*/
if (*s == '\'' && s > arg && *arg == '\'')
break;
}
*d = NUL;
}
*matches = (char_u **)"";
*num_matches = 0;
if (find_tags(IObuff, num_matches, matches,
TAG_HELP | TAG_REGEXP | TAG_NAMES | TAG_VERBOSE, MAXCOL) == OK)
#ifdef HAVE_QSORT
/*
* Sort the matches found on the heuristic number that is after the
* tag name. If there is no qsort, the output will be messy!
*/
qsort((void *)*matches, (size_t)*num_matches,
sizeof(char_u *), help_compare)
#endif
;
return OK;
}