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minix/commands/elvis/cmd1.c
Tomas Hruby ae75f9d4e5 Removal of the executable flag from files that cannot be executed 
- 755 -> 644
2009-11-09 10:26:00 +00:00

1774 lines
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/* cmd1.c */
/* Author:
* Steve Kirkendall
* 14407 SW Teal Blvd. #C
* Beaverton, OR 97005
* kirkenda@cs.pdx.edu
*/
/* 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 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() */
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 (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";
close(fd);
}
/*ARGSUSED*/
void cmd_shell(frommark, tomark, cmd, bang, extra)
MARK frommark, tomark;
CMD cmd;
int bang;
char *extra;
{
static char prevextra[80];
/* special case: ":sh" means ":!sh" */
if (cmd == CMD_SHELL)
{
extra = o_shell;
frommark = tomark = 0L;
}
/* if extra is "!", substitute previous command */
if (*extra == '!')
{
if (!*prevextra)
{
msg("No previous shell command to substitute for '!'");
return;
}
extra = prevextra;
}
else if (cmd == CMD_BANG && 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 != '/' && *extra != '?')
{
msg("Usage: %c /regular expression/ command", cmd == CMD_GLOBAL ? 'g' : 'v');
return;
}
/* parse & compile the search pattern */
cmdptr = parseptrn(extra);
if (!extra[1])
{
msg("Can't use empty regular expression with '%c' command", cmd == CMD_GLOBAL ? 'g' : 'v');
return;
}
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 %ld lines, line %ld [%ld%%]",
#else
msg("\"%s\" %s%s %ld lines, line %ld [%ld%%]",
#endif
*origname ? origname : "[NO FILE]",
tstflag(file, MODIFIED) ? "[MODIFIED]" : "",
#ifndef CRUNCH
tstflag(file, NOTEDITED) ?"[NOT EDITED]":"",
#endif
tstflag(file, READONLY) ? "[READONLY]" : "",
nlines,
markline(frommark),
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 = (char *)0;
#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 == '+')
{
for (init = ++extra; !isspace(*extra); extra++)
{
}
while (isspace(*extra))
{
*extra++ = '\0';
}
if (!*init)
{
init = "$";
}
if (!extra)
{
extra = origname;
}
}
#endif /* not CRUNCH */
/* switch files */
if (tmpabort(bang))
{
tmpstart(extra);
if (line <= nlines && line >= 1L)
{
cursor = MARK_AT_LINE(line);
}
#ifndef CRUNCH
if (init)
{
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 from :wq -- always writes back in this 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;
/* if there are more files to edit, then warn user */
if (argno >= 0 && argno + 1 < nargs && whenwarned != changes && (!bang || cmd != CMD_QUIT))
{
msg("More files to edit -- Use \":n\" to go to next file");
whenwarned = changes;
return;
}
if (cmd == CMD_QUIT)
{
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;
}
else
{
/* else try to save this file */
oldflag = tstflag(file, MODIFIED);
if (cmd == CMD_WQUIT)
setflag(file, MODIFIED);
if (tmpend(bang))
{
mode = MODE_QUIT;
}
else
{
msg("Could not save file -- use quit! to abort changes, or w filename");
}
if (!oldflag)
clrflag(file, MODIFIED);
}
}
/*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
{
*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;
{
char *getenv();
#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 = getenv("HOME");
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 && (*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 */
#ifdef INTERNAL_TAGS
char *cmp; /* char of tag name we're comparing, or NULL */
char *end; /* marks the end of chars in tmpblk.c */
#else
int i;
#endif
#ifndef NO_MAGIC
char wasmagic; /* preserves the original state of o_magic */
#endif
static char prevtag[30];
/* if no tag is given, use the previous tag */
if (!extra || !*extra)
{
if (!*prevtag)
{
msg("No previous tag");
return;
}
extra = prevtag;
}
else
{
strncpy(prevtag, extra, sizeof prevtag);
prevtag[sizeof prevtag - 1] = '\0';
}
#ifndef INTERNAL_TAGS
/* use "ref" to look up the tag info for this tag */
sprintf(tmpblk.c, "ref -t %s%s %s", (*origname ? "-f" : ""),origname, prevtag);
fd = rpipe(tmpblk.c, 0);
if (fd < 0)
{
msg("Can't run \"%s\"", tmpblk.c);
return;
}
/* try to read the tag info */
for (scan = tmpblk.c;
(i = tread(fd, scan, scan - tmpblk.c + BLKSIZE)) > 0;
scan += i)
{
}
*scan = '\0';
/* close the pipe. abort if error */
if (rpclose(fd) != 0 || scan < tmpblk.c + 3)
{
msg("tag \"%s\" not found", extra);
return;
}
#else /* use internal code to look up the tag */
/* open the tags file */
fd = open(TAGS, O_RDONLY);
if (fd < 0)
{
msg("No tags file");
return;
}
/* Hmmm... this would have been a lot easier with <stdio.h> */
/* find the line with our tag in it */
for(scan = end = tmpblk.c, cmp = extra; ; scan++)
{
/* read a block, if necessary */
if (scan >= end)
{
end = tmpblk.c + tread(fd, tmpblk.c, BLKSIZE);
scan = tmpblk.c;
if (scan >= end)
{
msg("tag \"%s\" not found", extra);
close(fd);
return;
}
}
/* if we're comparing, compare... */
if (cmp)
{
/* matched??? wow! */
if (!*cmp && *scan == '\t')
{
break;
}
if (*cmp++ != *scan)
{
/* failed! skip to newline */
cmp = (char *)0;
}
}
/* if we're skipping to newline, do it fast! */
if (!cmp)
{
while (scan < end && *scan != '\n')
{
scan++;
}
if (scan < end)
{
cmp = extra;
}
}
}
/* found it! get the rest of the line into memory */
for (cmp = tmpblk.c, scan++; scan < end && *scan != '\n'; )
{
*cmp++ = *scan++;
}
if (scan == end)
{
tread(fd, cmp, BLKSIZE - (int)(cmp - tmpblk.c));
}
else
*cmp = *scan;
/* we can close the tags file now */
close(fd);
#endif /* INTERNAL_TAGS */
/* extract the filename from the line, and edit the file */
for (scan = tmpblk.c; *scan != '\t'; scan++)
{
}
*scan++ = '\0';
if (strcmp(origname, tmpblk.c) != 0)
{
if (!tmpabort(bang))
{
msg("Use :tag! to abort changes, or :w to save changes");
return;
}
tmpstart(tmpblk.c);
}
/* move to the desired line (or to line 1 if that fails) */
#ifndef NO_MAGIC
wasmagic = *o_magic;
*o_magic = FALSE;
#endif
cursor = MARK_FIRST;
linespec(scan, &cursor);
if (cursor == MARK_UNSET)
{
cursor = MARK_FIRST;
msg("Tag's address is out of date");
}
#ifndef NO_MAGIC
*o_magic = wasmagic;
#endif
}
/* describe this version of the program */
/*ARGSUSED*/
void cmd_version(frommark, tomark, cmd, bang, extra)
MARK frommark;
MARK tomark;
CMD cmd;
int bang;
char *extra;
{
msg("%s", VERSION);
#ifdef CREDIT
msg("%s", CREDIT);
#endif
#ifdef CREDIT2
msg("%s", CREDIT2);
#endif
#ifdef COMPILED_BY
msg("Compiled by %s", COMPILED_BY);
#endif
#ifdef COPYING
msg("%s", COPYING);
#endif
}
#ifndef NO_MKEXRC
/* make a .exrc file which describes the current configuration */
/*ARGSUSED*/
void cmd_mkexrc(frommark, tomark, cmd, bang, extra)
MARK frommark;
MARK tomark;
CMD cmd;
int bang;
char *extra;
{
int fd;
/* the default name for the .exrc file EXRC */
if (!*extra)
{
extra = EXRC;
}
/* create the .exrc file */
fd = creat(extra, FILEPERMS);
if (fd < 0)
{
msg("Couldn't create a new \"%s\" file", extra);
return;
}
/* save stuff */
saveopts(fd);
savemaps(fd, FALSE);
#ifndef NO_ABBR
savemaps(fd, TRUE);
#endif
#ifndef NO_DIGRAPH
savedigs(fd);
#endif
#ifndef NO_COLOR
savecolor(fd);
#endif
/* close the file */
close(fd);
msg("Configuration saved");
}
#endif
#ifndef NO_DIGRAPH
/*ARGSUSED*/
void cmd_digraph(frommark, tomark, cmd, bang, extra)
MARK frommark;
MARK tomark;
CMD cmd;
int bang;
char *extra;
{
do_digraph(bang, extra);
}
#endif
#ifndef NO_ERRLIST
static char errfile[256]; /* the name of a file containing an error */
static long errline; /* the line number for an error */
static int errfd = -2; /* fd of the errlist file */
/* This static function tries to parse an error message.
*
* For most compilers, the first word is taken to be the name of the erroneous
* file, and the first number after that is taken to be the line number where
* the error was detected. The description of the error follows, possibly
* preceded by an "error ... :" or "warning ... :" label which is skipped.
*
* For Coherent, error messages look like "line#: filename: message".
*
* For non-error lines, or unparsable error lines, this function returns NULL.
* Normally, though, it alters errfile and errline, and returns a pointer to
* the description.
*/
static char *parse_errmsg(text)
REG char *text;
{
REG char *cpy;
long atol();
# if COHERENT || TOS /* any Mark Williams compiler */
/* Get the line number. If no line number, then ignore this line. */
errline = atol(text);
if (errline == 0L)
return (char *)0;
/* Skip to the start of the filename */
while (*text && *text++ != ':')
{
}
if (!*text++)
return (char *)0;
/* copy the filename to errfile */
for (cpy = errfile; *text && (*cpy++ = *text++) != ':'; )
{
}
if (!*text++)
return (char *)0;
cpy[-1] = '\0';
return text;
# else /* not a Mark Williams compiler */
char *errmsg;
/* the error message is the whole line, by default */
errmsg = text;
/* skip leading garbage */
while (*text && !isalnum(*text))
{
text++;
}
/* copy over the filename */
cpy = errfile;
while(isalnum(*text) || *text == '.')
{
*cpy++ = *text++;
}
*cpy = '\0';
/* ignore the name "Error" and filenames that contain a '/' */
if (*text == '/' || !*errfile || !strcmp(errfile + 1, "rror") || access(errfile, 0) < 0)
{
return (char *)0;
}
/* skip garbage between filename and line number */
while (*text && !isdigit(*text))
{
text++;
}
/* if the number is part of a larger word, then ignore this line */
if (*text && isalpha(text[-1]))
{
return (char *)0;
}
/* get the error line */
errline = 0L;
while (isdigit(*text))
{
errline *= 10;
errline += (*text - '0');
text++;
}
/* any line which lacks a filename or line number should be ignored */
if (!errfile[0] || !errline)
{
return (char *)0;
}
/* locate the beginning of the error description */
while (*text && !isspace(*text))
{
text++;
}
while (*text)
{
# ifndef CRUNCH
/* skip "error #:" and "warning #:" clauses */
if (!strncmp(text + 1, "rror ", 5)
|| !strncmp(text + 1, "arning ", 7)
|| !strncmp(text + 1, "atal error", 10))
{
do
{
text++;
} while (*text && *text != ':');
continue;
}
# endif
/* anything other than whitespace or a colon is important */
if (!isspace(*text) && *text != ':')
{
errmsg = text;
break;
}
/* else keep looking... */
text++;
}
return errmsg;
# endif /* not COHERENT */
}
/*ARGSUSED*/
void cmd_errlist(frommark, tomark, cmd, bang, extra)
MARK frommark, tomark;
CMD cmd;
int bang;
char *extra;
{
static long endline;/* original number of lines in this file */
static long offset; /* offset of the next line in the errlist file */
int i;
char *errmsg;
/* if a new errlist file is named, open it */
if (extra && extra[0])
{
/* close the old one */
if (errfd >= 0)
{
close(errfd);
}
/* open the new one */
errfd = open(extra, O_RDONLY);
offset = 0L;
endline = nlines;
}
else if (errfd < 0)
{
/* open the default file */
errfd = open(ERRLIST, O_RDONLY);
offset = 0L;
endline = nlines;
}
/* do we have an errlist file now? */
if (errfd < 0)
{
msg("There is no errlist file");
beep();
return;
}
/* find the next error message in the file */
do
{
/* read the next line from the errlist */
lseek(errfd, offset, 0);
if (tread(errfd, tmpblk.c, (unsigned)BLKSIZE) <= 0)
{
msg("No more errors");
beep();
close(errfd);
errfd = -2;
return;
}
for (i = 0; tmpblk.c[i] != '\n'; i++)
{
}
tmpblk.c[i++] = 0;
/* look for an error message in the line */
errmsg = parse_errmsg(tmpblk.c);
if (!errmsg)
{
offset += i;
}
} while (!errmsg);
/* switch to the file containing the error, if this isn't it */
if (strcmp(origname, errfile))
{
if (!tmpabort(bang))
{
msg("Use :er! to abort changes, or :w to save changes");
beep();
return;
}
tmpstart(errfile);
endline = nlines;
}
else if (endline == 0L)
{
endline = nlines;
}
/* go to the line where the error was detected */
cursor = MARK_AT_LINE(errline + (nlines - endline));
if (cursor > MARK_LAST)
{
cursor = MARK_LAST;
}
if (mode == MODE_VI)
{
redraw(cursor, FALSE);
}
/* display the error message */
#ifdef CRUNCH
msg("%.70s", errmsg);
#else
if (nlines > endline)
{
msg("line %ld(+%ld): %.60s", errline, nlines - endline, errmsg);
}
else if (nlines < endline)
{
msg("line %ld(-%ld): %.60s", errline, endline - nlines, errmsg);
}
else
{
msg("line %ld: %.65s", errline, errmsg);
}
#endif
/* remember where the NEXT error line will start */
offset += i;
}
/*ARGSUSED*/
void cmd_make(frommark, tomark, cmd, bang, extra)
MARK frommark, tomark;
CMD cmd;
int bang;
char *extra;
{
BLK buf;
/* if the file hasn't been saved, then complain unless ! */
if (tstflag(file, MODIFIED) && !bang)
{
msg("\"%s\" not saved yet", origname);
return;
}
/* build the command */
sprintf(buf.c, "%s %s %s%s", (cmd == CMD_CC ? o_cc : o_make), extra, REDIRECT, ERRLIST);
qaddstr(buf.c);
addch('\n');
/* close the old errlist file, if any */
if (errfd >= 0)
{
close(errfd);
errfd = -3;
}
/* run the command, with curses temporarily disabled */
suspend_curses();
system(buf.c);
resume_curses(mode == MODE_EX);
if (mode == MODE_COLON)
mode = MODE_VI;
/* run the "errlist" command */
cmd_errlist(MARK_UNSET, MARK_UNSET, cmd, bang, ERRLIST);
}
#endif
#ifndef NO_COLOR
/* figure out the number of text colors we use with this configuration */
# ifndef NO_POPUP
# ifndef NO_VISIBLE
# define NCOLORS 7
# else
# define NCOLORS 6
# endif
# else
# ifndef NO_VISIBLE
# define NCOLORS 6
# else
# define NCOLORS 5
# endif
# endif
/* the attribute bytes used in each of "when"s */
static char bytes[NCOLORS];
static struct
{
char *word; /* a legal word */
int type; /* what type of word this is */
int val; /* some other value */
}
words[] =
{
{"normal", 1, A_NORMAL}, /* all "when" names must come */
{"standout", 1, A_STANDOUT}, /* at the top of the list. */
{"bold", 1, A_BOLD}, /* The first 3 must be normal,*/
{"underlined", 1, A_UNDERLINE}, /* standout, and bold; the */
{"italics", 1, A_ALTCHARSET}, /* remaining names follow. */
#ifndef NO_POPUP
{"popup", 1, A_POPUP},
#endif
#ifndef NO_VISIBLE
{"visible", 1, A_VISIBLE},
#endif
{"black", 3, 0x00}, /* The color names start right*/
{"blue", 3, 0x01}, /* after the "when" names. */
{"green", 3, 0x02},
{"cyan", 3, 0x03},
{"red", 3, 0x04},
{"magenta", 3, 0x05},
{"brown", 3, 0x06},
{"white", 3, 0x07},
{"yellow", 3, 0x0E}, /* bright brown */
{"gray", 3, 0x08}, /* bright black? of course! */
{"grey", 3, 0x08},
{"bright", 2, 0x08},
{"light", 2, 0x08},
{"blinking", 2, 0x80},
{"on", 0, 0},
{"n", 1, A_NORMAL},
{"s", 1, A_STANDOUT},
{"b", 1, A_BOLD},
{"u", 1, A_UNDERLINE},
{"i", 1, A_ALTCHARSET},
#ifndef NO_POPUP
{"p", 1, A_POPUP},
{"menu", 1, A_POPUP},
#endif
#ifndef NO_VISIBLE
{"v", 1, A_VISIBLE},
#endif
{(char *)0, 0, 0}
};
/*ARGSUSED*/
void cmd_color(frommark, tomark, cmd, bang, extra)
MARK frommark, tomark;
CMD cmd;
int bang;
char *extra;
{
int attrbyte;
int cmode;
int nowbg; /* BOOLEAN: is the next color background? */
REG char *scan;
REG i;
#ifndef CRUNCH
/* if no args are given, then report the current colors */
if (!*extra)
{
/* if no colors are set, then say so */
if (!bytes[0])
{
msg("no colors have been set");
return;
}
/* report all five color combinations */
for (i = 0; i < NCOLORS; i++)
{
qaddstr("color ");
qaddstr(words[i].word);
qaddch(' ');
if (bytes[i] & 0x80)
qaddstr("blinking ");
switch (bytes[i] & 0xf)
{
case 0x08: qaddstr("gray"); break;
case 0x0e: qaddstr("yellow"); break;
case 0x0f: qaddstr("bright white");break;
default:
if (bytes[i] & 0x08)
qaddstr("light ");
qaddstr(words[(bytes[i] & 0x07) + NCOLORS].word);
}
qaddstr(" on ");
qaddstr(words[((bytes[i] >> 4) & 0x07) + NCOLORS].word);
addch('\n');
exrefresh();
}
return;
}
#endif
/* The default background color is the same as "normal" chars.
* There is no default foreground color.
*/
cmode = A_NORMAL;
attrbyte = bytes[0] & 0x70;
nowbg = FALSE;
/* parse each word in the "extra" text */
for (scan = extra; *extra; extra = scan)
{
/* locate the end of the word */
while (*scan && *scan != ' ')
{
scan++;
}
/* skip whitespace at the end of the word */
while(*scan == ' ')
{
*scan++ = '\0';
}
/* lookup the word */
for (i = 0; words[i].word && strcmp(words[i].word, extra); i++)
{
}
/* if not a word, then complain */
if (!words[i].word)
{
msg("Invalid color name: %s", extra);
return;
}
/* process the word */
switch (words[i].type)
{
case 1:
cmode = words[i].val;
break;
case 2:
attrbyte |= words[i].val;
break;
case 3:
if (nowbg)
attrbyte = ((attrbyte & ~0x70) | ((words[i].val & 0x07) << 4));
else
attrbyte |= words[i].val;
nowbg = TRUE;
break;
}
}
/* if nowbg isn't set now, then we were never given a foreground color */
if (!nowbg)
{
msg("usage: color [when] [\"bright\"] [\"blinking\"] foreground [background]");
return;
}
/* the first ":color" command MUST define the "normal" colors */
if (!bytes[0])
cmode = A_NORMAL;
/* we should now have a cmode and an attribute byte... */
/* set the color */
setcolor(cmode, attrbyte);
/* remember what we just did */
bytes[cmode] = attrbyte;
/* if the other colors haven't been set yet, then set them to defaults */
if (!bytes[1])
{
/* standout is the opposite of normal */
bytes[1] = ((attrbyte << 4) & 0x70 | (attrbyte >> 4) & 0x07);
setcolor(A_STANDOUT, bytes[1]);
/* if "normal" isn't bright, then bold defaults to normal+bright
* else bold defaults to bright white.
*/
bytes[2] = attrbyte | ((attrbyte & 0x08) ? 0x0f : 0x08);
setcolor(A_BOLD, bytes[2]);
/* all others default to the "standout" colors, without blinking */
for (i = 3; i < NCOLORS; i++)
{
bytes[i] = (bytes[1] & 0x7f);
setcolor(words[i].val, bytes[i]);
}
}
/* force a redraw, so we see the new colors */
redraw(MARK_UNSET, FALSE);
}
void savecolor(fd)
int fd; /* file descriptor to write colors to */
{
int i;
char buf[80];
/* if no colors are set, then return */
if (!bytes[0])
{
return;
}
/* save all five color combinations */
for (i = 0; i < NCOLORS; i++)
{
strcpy(buf, "color ");
strcat(buf, words[i].word);
strcat(buf, " ");
if (bytes[i] & 0x80)
strcat(buf, "blinking ");
switch (bytes[i] & 0xf)
{
case 0x08: strcat(buf, "gray"); break;
case 0x0e: strcat(buf, "yellow"); break;
case 0x0f: strcat(buf, "bright white");break;
default:
if (bytes[i] & 0x08)
strcat(buf, "light ");
strcat(buf, words[(bytes[i] & 0x07) + NCOLORS].word);
}
strcat(buf, " on ");
strcat(buf, words[((bytes[i] >> 4) & 0x07) + NCOLORS].word);
strcat(buf, "\n");
twrite(fd, buf, (unsigned)strlen(buf));
}
}
#endif
#ifdef SIGTSTP
/* temporarily suspend elvis */
/*ARGSUSED*/
void cmd_suspend(frommark, tomark, cmd, bang, extra)
MARK frommark;
MARK tomark;
CMD cmd;
int bang;
char *extra;
{
void (*func)(); /* stores the previous setting of SIGTSTP */
#if ANY_UNIX
/* the Bourne shell can't handle ^Z */
if (!strcmp(o_shell, "/bin/sh"))
{
msg("The /bin/sh shell doesn't support ^Z");
return;
}
#endif
move(LINES - 1, 0);
if (tstflag(file, MODIFIED))
{
addstr("Warning: \"");
addstr(origname);
addstr("\" modified but not yet saved");
clrtoeol();
}
refresh();
suspend_curses();
func = signal(SIGTSTP, SIG_DFL);
kill (0, SIGTSTP);
/* the process stops and resumes here */
signal(SIGTSTP, func);
resume_curses(TRUE);
if (mode == MODE_VI || mode == MODE_COLON)
redraw(MARK_UNSET, FALSE);
else
refresh ();
}
#endif
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