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cmd1.c
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cmd1.c
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/* cmd1.c */
/* Author:
* Steve Kirkendall
* 1500 SW Park #326
* Portland OR, 97201
*/
/* This file contains some of the EX commands - mostly ones that deal with
* files, options, etc. -- anything except text.
*/
#include "config.h"
#include "ctype.h"
#include "vi.h"
#include "regexp.h"
#ifdef INTERNAL_TAGS
# ifdef __STDC__
# include "string.h"
# else
extern char *strrchr();
# endif
#endif
#ifndef NO_TAGSTACK
/* These describe the current state of the tag related commands */
#define MAXTAGS 15
struct Tag_item {
MARK tag_mark;
char *tag_file;
};
static struct Tag_item tag_stack[MAXTAGS];
static int curr_tag = -1;
#endif /* !NO_TAGSTACK */
#ifdef DEBUG
/* print the selected lines with info on the blocks */
/*ARGSUSED*/
void cmd_debug(frommark, tomark, cmd, bang, extra)
MARK frommark;
MARK tomark;
CMD cmd;
int bang;
char *extra;
{
REG char *scan;
REG long l;
REG int i;
int len;
/* scan lnum[] to determine which block its in */
l = markline(frommark);
for (i = 1; l > lnum[i]; i++)
{
}
do
{
/* fetch text of the block containing that line */
scan = blkget(i)->c;
/* calculate its length */
if (scan[BLKSIZE - 1])
{
len = BLKSIZE;
}
else
{
len = strlen(scan);
}
/* print block stats */
msg("##### hdr[%d]=%d, lnum[%d-1]=%ld, lnum[%d]=%ld (%ld lines)",
i, hdr.n[i], i, lnum[i-1], i, lnum[i], lnum[i] - lnum[i - 1]);
msg("##### len=%d, buf=0x%lx, %sdirty",
len, scan, ((int *)scan)[MAXBLKS + 1] ? "" : "not ");
if (bang)
{
while (--len >= 0)
{
addch(*scan);
scan++;
}
}
exrefresh();
/* next block */
i++;
} while (i < MAXBLKS && lnum[i] && lnum[i - 1] < markline(tomark));
}
/* This function checks a lot of conditions to make sure they aren't screwy */
/*ARGSUSED*/
void cmd_validate(frommark, tomark, cmd, bang, extra)
MARK frommark;
MARK tomark;
CMD cmd;
int bang;
char *extra;
{
char *scan;
int i;
int nlcnt; /* used to count newlines */
int len; /* counts non-NUL characters */
/* check lnum[0] */
if (lnum[0] != 0L)
{
msg("lnum[0] = %ld", lnum[0]);
}
/* check each block */
for (i = 1; lnum[i] <= nlines; i++)
{
scan = blkget(i)->c;
if (scan[BLKSIZE - 1])
{
msg("block %d has no NUL at the end", i);
}
else
{
for (nlcnt = len = 0; *scan; scan++, len++)
{
if (*scan == '\n')
{
nlcnt++;
}
}
if (scan[-1] != '\n')
{
msg("block %d doesn't end with '\\n' (length %d)", i, len);
}
if (bang || nlcnt != lnum[i] - lnum[i - 1])
{
msg("block %d (line %ld?) has %d lines, but should have %ld",
i, lnum[i - 1] + 1L, nlcnt, lnum[i] - lnum[i - 1]);
}
}
exrefresh();
}
/* check lnum again */
if (lnum[i] != INFINITY)
{
msg("hdr.n[%d] = %d, but lnum[%d] = %ld",
i, hdr.n[i], i, lnum[i]);
}
msg("# = \"%s\", %% = \"%s\"", prevorig, origname);
msg("V_from=%ld.%d, cursor=%ld.%d", markline(V_from), markidx(V_from), markline(cursor), markidx(cursor));
}
#endif /* DEBUG */
/*ARGSUSED*/
void cmd_mark(frommark, tomark, cmd, bang, extra)
MARK frommark;
MARK tomark;
CMD cmd;
int bang;
char *extra;
{
/* validate the name of the mark */
if (*extra == '"')
{
extra++;
}
/* valid mark names are lowercase ascii characters */
if (!isascii(*extra) || !islower(*extra) || extra[1])
{
msg("Invalid mark name");
return;
}
mark[*extra - 'a'] = tomark;
}
/*ARGSUSED*/
void cmd_write(frommark, tomark, cmd, bang, extra)
MARK frommark;
MARK tomark;
CMD cmd;
int bang;
char *extra;
{
int fd;
int append; /* boolean: write in "append" mode? */
REG long l;
REG char *scan;
REG int i;
/* if writing to a filter, then let filter() handle it */
if (*extra == '!')
{
filter(frommark, tomark, extra + 1, FALSE);
return;
}
/* if all lines are to be written, use tmpsave() since it is faster.
* Exception: if cmd_write was called by the filter() function
* (i.e., cmd == CMD_BANG) then do it the slow way anyway, so we
* can avoid clobbering prevorig.
*/
if (frommark == MARK_FIRST && tomark == MARK_LAST && cmd == CMD_WRITE)
{
tmpsave(extra, bang);
return;
}
/* see if we're going to do this in append mode or not */
append = FALSE;
if (extra[0] == '>' && extra[1] == '>')
{
extra += 2;
append = TRUE;
}
/* either the file must not exist, or we must have a ! or be appending */
if (*extra && access(extra, 0) == 0 && !bang && !append)
{
msg("File already exists - Use :w! to overwrite");
return;
}
/* else do it line-by-line, like cmd_print() */
if (append)
{
#ifdef O_APPEND
fd = open(extra, O_WRONLY|O_APPEND);
#else
fd = open(extra, O_WRONLY);
if (fd >= 0)
{
lseek(fd, 0L, 2);
}
#endif
}
else
{
fd = -1; /* so we know the file isn't open yet */
}
if (fd < 0)
{
fd = creat(extra, FILEPERMS);
if (fd < 0)
{
msg("Can't write to \"%s\"", extra);
return;
}
}
for (l = markline(frommark); l <= markline(tomark); l++)
{
/* get the next line */
scan = fetchline(l);
i = strlen(scan);
scan[i++] = '\n';
/* print the line */
if (twrite(fd, scan, i) < i)
{
msg("Write failed");
break;
}
}
rptlines = markline(tomark) - markline(frommark) + 1;
rptlabel = "written";
#if MSDOS
if (*o_controlz)
{
write(fd, "\032", 1);
}
#endif
#ifndef CRUNCH
/* make # refer to the file we just wrote */
if (strcmp(origname, extra) && cmd != CMD_BANG)
{
strcpy(prevorig, extra);
}
#endif
close(fd);
}
/*ARGSUSED*/
void cmd_shell(frommark, tomark, cmd, bang, extra)
MARK frommark, tomark;
CMD cmd;
int bang;
char *extra;
{
static char prevextra[132];
/* special case: ":sh" means ":!sh" */
if (cmd == CMD_SHELL)
{
extra = o_shell;
frommark = tomark = 0L;
}
/* if already did one or more shell commands, need extra newline to
* avoid overwriting user's command string */
if (mode == MODE_COLON)
{
addch('\n');
}
/* if extra is "!", substitute previous command */
if (*extra == '!')
{
if (!*prevextra)
{
msg("No previous shell command to substitute for '!'");
return;
}
strcat(prevextra, extra + 1);
extra = prevextra;
}
else if (cmd == CMD_BANG && (unsigned)strlen(extra) < sizeof(prevextra) - 1)
{
strcpy(prevextra, extra);
}
/* warn the user if the file hasn't been saved yet */
if (*o_warn && tstflag(file, MODIFIED))
{
if (mode == MODE_VI)
{
mode = MODE_COLON;
}
msg("Warning: \"%s\" has been modified but not yet saved", origname);
}
/* if no lines were specified, just run the command */
suspend_curses();
if (frommark == 0L)
{
system(extra);
}
else /* pipe lines from the file through the command */
{
filter(frommark, tomark, extra, TRUE);
}
/* resume curses quietly for MODE_EX, but noisily otherwise */
resume_curses(mode == MODE_EX);
}
/*ARGSUSED*/
void cmd_global(frommark, tomark, cmd, bang, extra)
MARK frommark, tomark;
CMD cmd;
int bang;
char *extra; /* rest of the command line */
{
char *cmdptr; /* the command from the command line */
char cmdln[100]; /* copy of the command from the command line */
char *line; /* a line from the file */
long l; /* used as a counter to move through lines */
long lqty; /* quantity of lines to be scanned */
long nchanged; /* number of lines changed */
regexp *re; /* the compiled search expression */
/* can't nest global commands */
if (doingglobal)
{
msg("Can't nest global commands.");
rptlines = -1L;
return;
}
/* ":g! ..." is the same as ":v ..." */
if (bang)
{
cmd = CMD_VGLOBAL;
}
/* make sure we got a search pattern */
if (!*extra)
{
msg("Usage: %c /regular expression/ command", cmd == CMD_GLOBAL ? 'g' : 'v');
return;
}
/* parse & compile the search pattern */
cmdptr = parseptrn(extra);
#if 0
if (!extra[1])
{
msg("Can't use empty regular expression with '%c' command", cmd == CMD_GLOBAL ? 'g' : 'v');
return;
}
#endif
re = regcomp(extra + 1);
if (!re)
{
/* regcomp found & described an error */
return;
}
/* for each line in the range */
doingglobal = TRUE;
ChangeText
{
/* NOTE: we have to go through the lines in a forward order,
* otherwise "g/re/p" would look funny. *BUT* for "g/re/d"
* to work, simply adding 1 to the line# on each loop won't
* work. The solution: count lines relative to the end of
* the file. Think about it.
*/
for (l = nlines - markline(frommark),
lqty = markline(tomark) - markline(frommark) + 1L,
nchanged = 0L;
lqty > 0 && nlines - l >= 0 && nchanged >= 0L;
l--, lqty--)
{
/* fetch the line */
line = fetchline(nlines - l);
/* if it contains the search pattern... */
if ((!regexec(re, line, 1)) == (cmd != CMD_GLOBAL))
{
/* move the cursor to that line */
cursor = MARK_AT_LINE(nlines - l);
/* do the ex command (without mucking up
* the original copy of the command line)
*/
strcpy(cmdln, cmdptr);
rptlines = 0L;
doexcmd(cmdln, '\\');
nchanged += rptlines;
}
}
}
doingglobal = FALSE;
/* free the regexp */
_free_(re);
/* Reporting...*/
rptlines = nchanged;
}
/*ARGSUSED*/
void cmd_file(frommark, tomark, cmd, bang, extra)
MARK frommark, tomark;
CMD cmd;
int bang;
char *extra;
{
#ifndef CRUNCH
/* if we're given a new filename, use it as this file's name */
if (extra && *extra)
{
strcpy(origname, extra);
storename(origname);
setflag(file, NOTEDITED);
}
#endif
if (cmd == CMD_FILE)
{
#ifndef CRUNCH
msg("\"%s\" %s%s%s line %ld of %ld [%ld%%]",
#else
msg("\"%s\" %s%s line %ld of %ld [%ld%%]",
#endif
*origname ? origname : "[NO FILE]",
tstflag(file, MODIFIED) ? "[MODIFIED]" : "",
#ifndef CRUNCH
tstflag(file, NOTEDITED) ?"[NOT EDITED]":"",
#endif
tstflag(file, READONLY) ? "[READONLY]" : "",
markline(frommark),
nlines,
markline(frommark) * 100 / nlines);
}
#ifndef CRUNCH
else if (markline(frommark) != markline(tomark))
{
msg("range \"%ld,%ld\" contains %ld lines",
markline(frommark),
markline(tomark),
markline(tomark) - markline(frommark) + 1L);
}
#endif
else
{
msg("%ld", markline(frommark));
}
}
/*ARGSUSED*/
void cmd_edit(frommark, tomark, cmd, bang, extra)
MARK frommark, tomark;
CMD cmd;
int bang;
char *extra;
{
long line = 1L; /* might be set to prevline */
#ifndef CRUNCH
char init[100];
int i;
#endif
/* if ":vi", then switch to visual mode, and if no file is named
* then don't switch files.
*/
if (cmd == CMD_VISUAL)
{
mode = MODE_VI;
msg("");
if (!*extra)
{
return;
}
}
/* Editing previous file? Then start at previous line */
if (!strcmp(extra, prevorig))
{
line = prevline;
}
#ifndef CRUNCH
/* if we were given an explicit starting line, then start there */
if (*extra == '+')
{
/* copy the command into init */
for (i = 0, ++extra; i < sizeof(init) - 1 && !isspace(*extra); extra++)
{
init[i++] = *extra;
}
if (i == 0)
{
init[i++] = '$';
}
init[i] = '\0';
/* leave "extra" pointing to filename */
while (isspace(*extra))
{
extra++;
}
if (!*extra)
{
extra = origname;
}
}
else
{
init[0] = '\0';
}
#endif /* not CRUNCH */
/* switch files */
if (tmpabort(bang))
{
tmpstart(extra);
if (line <= nlines && line >= 1L)
{
cursor = MARK_AT_LINE(line);
}
#ifndef CRUNCH
if (init[0])
{
doexcmd(init, '\\');
}
#endif
}
else
{
msg("Use edit! to abort changes, or w to save changes");
/* so we can say ":e!#" next time... */
strcpy(prevorig, extra);
prevline = 1L;
}
}
/* This code is also used for rewind -- GB */
/*ARGSUSED*/
void cmd_next(frommark, tomark, cmd, bang, extra)
MARK frommark, tomark;
CMD cmd;
int bang;
char *extra;
{
int i, j;
char *scan;
/* if extra stuff given, use ":args" to define a new args list */
if (cmd == CMD_NEXT && extra && *extra)
{
cmd_args(frommark, tomark, cmd, bang, extra);
}
/* move to the next arg */
if (cmd == CMD_NEXT)
{
i = argno + 1;
}
else if (cmd == CMD_PREVIOUS)
{
i = argno - 1;
}
else /* cmd == CMD_REWIND */
{
i = 0;
}
if (i < 0 || i >= nargs)
{
msg("No %sfiles to edit", cmd == CMD_REWIND ? "" : "more ");
return;
}
/* find & isolate the name of the file to edit */
for (j = i, scan = args; j > 0; j--)
{
while(*scan++)
{
}
}
/* switch to the next file */
if (tmpabort(bang))
{
tmpstart(scan);
argno = i;
}
else
{
msg("Use :%s! to abort changes, or w to save changes",
cmd == CMD_NEXT ? "next" :
cmd == CMD_PREVIOUS ? "previous" :
"rewind");
}
}
/* also called for :wq -- always writes back in this case */
/* also called for :q -- never writes back in that case */
/*ARGSUSED*/
void cmd_xit(frommark, tomark, cmd, bang, extra)
MARK frommark, tomark;
CMD cmd;
int bang;
char *extra;
{
static long whenwarned; /* when the user was last warned of extra files */
int oldflag;
/* Handle :wq! command */
if (cmd == CMD_WQUIT && bang && tstflag(file, MODIFIED)) {
if (!tmpsave(extra, bang)) {
msg("Could not save file");
return;
}
mode = MODE_QUIT;
return;
}
/* Unless the command is ":q", save the file if it has been modified */
if (cmd != CMD_QUIT
&& (cmd == CMD_WQUIT || tstflag(file, MODIFIED))
&& !tmpsave((char *)0, FALSE) && !bang)
{
msg("Could not save file -- use quit! to abort changes, or w filename");
return;
}
/* If there are more files to edit, then warn user */
if (argno >= 0 && argno + 1 < nargs /* more args */
&& whenwarned != changes /* user not already warned */
&& (!bang || cmd != CMD_QUIT)) /* command not ":q!" */
{
msg("More files to edit -- Use \":n\" to go to next file");
whenwarned = changes;
return;
}
/* Discard the temp file. Note that we should already have saved the
* the file, unless the command is ":q", so the only way that tmpabort
* could fail would be if you did a ":q" on a modified file.
*/
oldflag = *o_autowrite;
*o_autowrite = FALSE;
if (tmpabort(bang))
{
mode = MODE_QUIT;
}
else
{
msg("Use q! to abort changes, or wq to save changes");
}
*o_autowrite = oldflag;
}
/*ARGSUSED*/
void cmd_args(frommark, tomark, cmd, bang, extra)
MARK frommark, tomark;
CMD cmd;
int bang;
char *extra;
{
char *scan;
int col;
int arg;
int scrolled = FALSE;
int width;
/* if no extra names given, or just current name, then report the args
* we have now.
*/
if (!extra || !*extra)
{
/* empty args list? */
if (nargs == 1 && !*args)
{
return;
}
/* list the arguments */
for (scan = args, col = arg = 0;
arg < nargs;
scan += width + 1, col += width, arg++)
{
width = strlen(scan);
if (col + width >= COLS - 4)
{
addch('\n');
col = 0;
scrolled = TRUE;
}
else if (col > 0)
{
addch(' ');
col++;
}
if (arg == argno)
{
addch('[');
addstr(scan);
addch(']');
col += 2;
}
else
{
addstr(scan);
}
}
/* write a trailing newline */
if ((mode == MODE_EX || mode == MODE_COLON || scrolled) && col)
{
addch('\n');
}
exrefresh();
}
else /* new args list given */
{
for (scan = args, nargs = 1; *extra; )
{
if (isspace(*extra))
{
*scan++ = '\0';
while (isspace(*extra))
{
extra++;
}
if (*extra)
{
nargs++;
}
}
else if ((unsigned char)(*extra) == SPACEHOLDER)
{
*scan++ = ' ';
extra++;
}
else
{
*scan++ = *extra++;
}
}
*scan = '\0';
/* reset argno to before the first, so :next will go to first */
argno = -1;
if (nargs != 1)
{
msg("%d files to edit", nargs);
}
}
}
/*ARGSUSED*/
void cmd_cd(frommark, tomark, cmd, bang, extra)
MARK frommark, tomark;
CMD cmd;
int bang;
char *extra;
{
#ifndef CRUNCH
/* if current file is modified, and no '!' was given, then error */
if (tstflag(file, MODIFIED) && !bang)
{
msg("File modified; use \"cd! %s\" to switch anyway", extra);
}
#endif
/* default directory name is $HOME */
if (!*extra)
{
extra = gethome((char *)0);
if (!extra)
{
msg("environment variable $HOME not set");
return;
}
}
/* go to the directory */
if (chdir(extra) < 0)
{
perror(extra);
}
}
/*ARGSUSED*/
void cmd_map(frommark, tomark, cmd, bang, extra)
MARK frommark, tomark;
CMD cmd;
int bang;
char *extra;
{
char *mapto;
char *build, *scan;
#ifndef NO_FKEY
static char *fnames[NFKEYS] =
{
"#10", "#1", "#2", "#3", "#4",
"#5", "#6", "#7", "#8", "#9",
# ifndef NO_SHIFT_FKEY
"#10s", "#1s", "#2s", "#3s", "#4s",
"#5s", "#6s", "#7s", "#8s", "#9s",
# ifndef NO_CTRL_FKEY
"#10c", "#1c", "#2c", "#3c", "#4c",
"#5c", "#6c", "#7c", "#8c", "#9c",
# ifndef NO_ALT_FKEY
"#10a", "#1a", "#2a", "#3a", "#4a",
"#5a", "#6a", "#7a", "#8a", "#9a",
# endif
# endif
# endif
};
int key;
#endif
/* "map" with no extra will dump the map table contents */
if (!*extra)
{
#ifndef NO_ABBR
if (cmd == CMD_ABBR)
{
dumpkey(bang ? WHEN_EX|WHEN_VIINP|WHEN_VIREP : WHEN_VIINP|WHEN_VIREP, TRUE);
}
else
#endif
{
dumpkey(bang ? WHEN_VIINP|WHEN_VIREP : WHEN_VICMD, FALSE);
}
}
else
{
/* "extra" is key to map, followed by what it maps to */
/* handle quoting inside the "raw" string */
for (build = mapto = extra;
*mapto && (
#ifndef NO_ABBR
cmd == CMD_UNABBR ||
#endif
*mapto != ' ' && *mapto != '\t');
*build++ = *mapto++)
{
if (*mapto == ctrl('V') && mapto[1])
{
mapto++;
}
}
/* skip whitespace, and mark the end of the "raw" string */
while ((*mapto == ' ' || *mapto == '\t'))
{
*mapto++ = '\0';
}
*build = '\0';
/* strip ^Vs from the "cooked" string */
for (scan = build = mapto; *scan; *build++ = *scan++)
{
if (*scan == ctrl('V') && scan[1])
{
scan++;
}
}
*build = '\0';
#ifndef NO_FKEY
/* if the mapped string is '#' and a number, then assume
* the user wanted that function key
*/
if (extra[0] == '#' && isdigit(extra[1]))
{
key = atoi(extra + 1) % 10;
# ifndef NO_SHIFT_FKEY
build = extra + strlen(extra) - 1;
if (*build == 's')
key += 10;
# ifndef NO_CTRL_FKEY
else if (*build == 'c')
key += 20;
# ifndef NO_ALT_FKEY
else if (*build == 'a')
key += 30;
# endif
# endif
# endif
if (FKEY[key])
mapkey(FKEY[key], mapto, bang ? WHEN_VIINP|WHEN_VIREP : WHEN_VICMD, fnames[key]);
else
msg("This terminal has no %s key", fnames[key]);
}
else
#endif
#ifndef NO_ABBR
if (cmd == CMD_ABBR || cmd == CMD_UNABBR)
{
mapkey(extra, mapto, bang ? WHEN_EX|WHEN_VIINP|WHEN_VIREP : WHEN_VIINP|WHEN_VIREP, "abbr");
}
else
#endif
{
mapkey(extra, mapto, bang ? WHEN_VIINP|WHEN_VIREP : WHEN_VICMD, (char *)0);
}
}
}
/*ARGSUSED*/
void cmd_set(frommark, tomark, cmd, bang, extra)
MARK frommark, tomark;
CMD cmd;
int bang;
char *extra;
{
if (!*extra)
{
dumpopts(FALSE);/* "FALSE" means "don't dump all" - only set */
}
else if (!strcmp(extra, "all"))
{
dumpopts(TRUE); /* "TRUE" means "dump all" - even unset vars */
}
else
{
setopts(extra);
/* That option may have affected the appearence of text */
changes++;
}
}
/*ARGSUSED*/
void cmd_tag(frommark, tomark, cmd, bang, extra)
MARK frommark, tomark;
CMD cmd;
int bang;
char *extra;
{
int fd; /* file descriptor used to read the file */
char *scan; /* used to scan through the tmpblk.c */
char search_string[256]; /* Search string used to locate tag */
int length; /* Length of above string */
char *end; /* marks the end of chars in tmpblk.c */