4.4BSD/usr/src/contrib/nvi/nvi/options.c
/*-
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char sccsid[] = "@(#)options.c 8.1 (Berkeley) 6/9/93";
#endif /* not lint */
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <ctype.h>
#include <curses.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "vi.h"
#include "excmd.h"
#include "pathnames.h"
static int opts_abbcmp __P((const void *, const void *));
static int opts_cmp __P((const void *, const void *));
static OPTLIST const *opts_prefix __P((char *));
static int opts_print __P((SCR *, OPTLIST const *, OPTION *));
static OPTLIST const optlist[] = {
/* O_AUTOINDENT */
{"autoindent", NULL, OPT_0BOOL, 0},
/* O_AUTOPRINT */
{"autoprint", NULL, OPT_1BOOL, 0},
/* O_AUTOWRITE */
{"autowrite", NULL, OPT_0BOOL, 0},
/* O_BEAUTIFY */
{"beautify", NULL, OPT_0BOOL, 0},
/* O_CC */
{"cc", NULL, OPT_STR, 0},
/* O_COLUMNS */
{"columns", f_columns, OPT_NUM, OPT_NOSAVE},
/* O_COMMENT */
{"comment", NULL, OPT_0BOOL, 0},
/* O_DIGRAPH */
{"digraph", NULL, OPT_0BOOL, 0},
/* O_DIRECTORY */
{"directory", NULL, OPT_STR, OPT_NOSAVE},
/* O_EDCOMPATIBLE */
{"edcompatible",NULL, OPT_0BOOL, 0},
/* O_ERRORBELLS */
{"errorbells", NULL, OPT_0BOOL, 0},
/* O_EXRC */
{"exrc", NULL, OPT_0BOOL, 0},
/* O_EXTENDED */
{"extended", NULL, OPT_0BOOL, 0},
/* O_FLASH */
{"flash", f_flash, OPT_1BOOL, 0},
/* O_IGNORECASE */
{"ignorecase", NULL, OPT_0BOOL, 0},
/* O_KEYTIME */
{"keytime", f_keytime, OPT_NUM, 0},
/* O_LEFTRIGHT */
{"leftright", f_leftright, OPT_0BOOL, 0},
/* O_LINES */
{"lines", f_lines, OPT_NUM, OPT_NOSAVE},
/* O_LIST */
{"list", f_list, OPT_0BOOL, 0},
/* O_MAGIC */
{"magic", NULL, OPT_1BOOL, 0},
/* O_MAKE */
{"make", NULL, OPT_STR, 0},
/* O_MESG */
{"mesg", f_mesg, OPT_1BOOL, 0},
/* O_MODELINES */
{"modelines", f_modelines, OPT_0BOOL, 0},
/* O_NUMBER */
{"number", f_number, OPT_0BOOL, 0},
/* O_NUNDO */
{"nundo", NULL, OPT_0BOOL, 0},
/* O_OPTIMIZE */
{"optimize", NULL, OPT_1BOOL, 0},
/* O_PARAGRAPHS */
{"paragraphs", f_paragraph, OPT_STR, 0},
/* O_PROMPT */
{"prompt", NULL, OPT_1BOOL, 0},
/* O_READONLY */
{"readonly", f_readonly, OPT_0BOOL, 0},
/* O_REDRAW */
{"redraw", NULL, OPT_0BOOL, 0},
/* O_REMAP */
{"remap", NULL, OPT_1BOOL, 0},
/* O_REPORT */
{"report", NULL, OPT_NUM, 0},
/* O_RULER */
{"ruler", f_ruler, OPT_0BOOL, 0},
/* O_SCROLL */
{"scroll", NULL, OPT_NUM, 0},
/* O_SECTIONS */
{"sections", f_section, OPT_STR, 0},
/* O_SHELL */
{"shell", NULL, OPT_STR, 0},
/* O_SHIFTWIDTH */
{"shiftwidth", f_shiftwidth, OPT_NUM, 0},
/* O_SHOWMATCH */
{"showmatch", NULL, OPT_0BOOL, 0},
/* O_SHOWMODE */
{"showmode", NULL, OPT_0BOOL, 0},
/* O_SIDESCROLL */
{"sidescroll", f_sidescroll, OPT_NUM, 0},
/* O_TABSTOP */
{"tabstop", f_tabstop, OPT_NUM, 0},
/* O_TAGLENGTH */
{"taglength", NULL, OPT_NUM, 0},
/* O_TAGS */
{"tags", f_tags, OPT_STR, 0},
/* O_TERM */
{"term", f_term, OPT_STR, OPT_NOSAVE},
/* O_TERSE */
{"terse", NULL, OPT_0BOOL, 0},
/* O_TIMEOUT */
{"timeout", NULL, OPT_0BOOL, 0},
/* O_VERBOSE */
{"verbose", NULL, OPT_0BOOL, 0},
/* O_WARN */
{"warn", NULL, OPT_1BOOL, 0},
/* O_WRAPMARGIN */
{"wrapmargin", f_wrapmargin, OPT_NUM, 0},
/* O_WRAPSCAN */
{"wrapscan", NULL, OPT_1BOOL, 0},
/* O_WRITEANY */
{"writeany", NULL, OPT_0BOOL, 0},
{NULL},
};
typedef struct abbrev {
char *name;
int offset;
} OABBREV;
static OABBREV const abbrev[] = {
{"ai", O_AUTOINDENT},
{"ap", O_AUTOPRINT},
{"aw", O_AUTOWRITE},
{"bf", O_BEAUTIFY},
{"cc", O_CC},
{"co", O_COLUMNS},
{"dig", O_DIGRAPH},
{"dir", O_DIRECTORY},
{"eb", O_ERRORBELLS},
{"ed", O_EDCOMPATIBLE},
{"fl", O_FLASH},
{"ic", O_IGNORECASE},
{"kt", O_KEYTIME},
{"li", O_LIST},
{"ls", O_LINES},
{"ma", O_MAGIC},
{"me", O_MESG},
{"mk", O_MAKE},
{"modeline", O_MODELINES},
{"nu", O_NUMBER},
{"opt", O_OPTIMIZE},
{"pa", O_PARAGRAPHS},
{"pr", O_PROMPT},
{"re", O_REPORT},
{"ro", O_READONLY},
{"ru", O_RULER},
{"sc", O_SCROLL},
{"se", O_SECTIONS},
{"sh", O_SHELL},
{"sm", O_SHOWMATCH},
{"ss", O_SIDESCROLL},
{"sw", O_SHIFTWIDTH},
{"te", O_TERM},
{"to", O_KEYTIME},
{"tr", O_TERSE},
{"ts", O_TABSTOP},
{"ve", O_VERBOSE},
{"wa", O_WARN},
{"wm", O_WRAPMARGIN},
{"wr", O_WRITEANY},
{"ws", O_WRAPSCAN},
{NULL},
};
/*
* opts_init --
* Initialize some of the options. Since the user isn't really
* "setting" these variables, don't set their OPT_SET bits.
*/
int
opts_init(sp)
SCR *sp;
{
OPTLIST const *op;
int cnt;
char *s, *argv[2], b1[1024];
argv[0] = b1;
argv[1] = NULL;
#define SET_DEF(opt, str) { \
if (str != b1) /* GCC puts strings in text-space. */ \
(void)strcpy(b1, str); \
if (opts_set(sp, argv)) { \
msgq(sp, M_ERR, \
"Unable to set default %s option", optlist[opt]); \
return (1); \
} \
F_CLR(&sp->opts[opt], OPT_SET); \
}
/* Set default values. */
for (op = optlist, cnt = 0; op->name != NULL; ++op, ++cnt)
if (op->type == OPT_0BOOL)
O_CLR(sp, cnt);
else if (op->type == OPT_1BOOL)
O_SET(sp, cnt);
SET_DEF(O_CC, "cc=cc -c");
(void)snprintf(b1, sizeof(b1), "directory=%s", _PATH_TMP);
SET_DEF(O_DIRECTORY, b1);
SET_DEF(O_KEYTIME, "keytime=2");
SET_DEF(O_MAKE, "make=make");
SET_DEF(O_REPORT, "report=5");
SET_DEF(O_PARAGRAPHS, "paragraphs=IPLPPPQPP LIpplpipbp");
(void)snprintf(b1, sizeof(b1), "scroll=%ld", O_VAL(sp, O_LINES) / 2);
SET_DEF(O_SCROLL, b1);
SET_DEF(O_SECTIONS, "sections=NHSHH HUnhsh");
(void)snprintf(b1, sizeof(b1),
"shell=%s", (s = getenv("SHELL")) == NULL ? _PATH_BSHELL : s);
SET_DEF(O_SHELL, b1);
SET_DEF(O_SHIFTWIDTH, "shiftwidth=8");
SET_DEF(O_SIDESCROLL, "sidescroll=16");
SET_DEF(O_TABSTOP, "tabstop=8");
(void)snprintf(b1, sizeof(b1), "tags=%s", _PATH_TAGS);
SET_DEF(O_TAGS, b1);
(void)snprintf(b1, sizeof(b1),
"term=%s", (s = getenv("TERM")) == NULL ? "unknown" : s);
SET_DEF(O_TERM, b1);
SET_DEF(O_WRAPMARGIN, "wrapmargin=0");
/*
* By default, the historic vi displayed information about
* two options, redraw and term. Term seems sufficient.
*/
F_SET(&sp->opts[O_TERM], OPT_SET);
return (0);
}
/*
* opts_set --
* Change the values of one or more options.
*/
int
opts_set(sp, argv)
SCR *sp;
char **argv;
{
register char *p;
OABBREV atmp, *ap;
OPTLIST const *op;
OPTLIST otmp;
OPTION *spo;
u_long value, turnoff;
int all, ch, offset, rval;
char *endp, *equals, *name;
for (all = rval = 0; *argv; ++argv) {
/*
* The historic vi dumped the options for each occurrence of
* "all" in the set list. Puhleeze.
*/
if (!strcmp(*argv, "all")) {
all = 1;
continue;
}
/* Find equals sign or end of set, skipping backquoted chars. */
for (p = name = *argv, equals = NULL; ch = *p; ++p)
switch(ch) {
case '=':
equals = p;
break;
case '\\':
/* Historic vi just used the backslash. */
if (p[1] == '\0')
break;
++p;
break;
}
turnoff = 0;
op = NULL;
if (equals)
*equals++ = '\0';
/* Check list of abbreviations. */
atmp.name = name;
if ((ap = bsearch(&atmp, abbrev,
sizeof(abbrev) / sizeof(OABBREV) - 1,
sizeof(OABBREV), opts_abbcmp)) != NULL) {
op = optlist + ap->offset;
goto found;
}
/* Check list of options. */
otmp.name = name;
if ((op = bsearch(&otmp, optlist,
sizeof(optlist) / sizeof(OPTLIST) - 1,
sizeof(OPTLIST), opts_cmp)) != NULL)
goto found;
/* Try the name without any leading "no". */
if (name[0] == 'n' && name[1] == 'o') {
turnoff = 1;
name += 2;
} else
goto prefix;
/* Check list of abbreviations. */
atmp.name = name;
if ((ap = bsearch(&atmp, abbrev,
sizeof(abbrev) / sizeof(OABBREV) - 1,
sizeof(OABBREV), opts_abbcmp)) != NULL) {
op = optlist + ap->offset;
goto found;
}
/* Check list of options. */
otmp.name = name;
if ((op = bsearch(&otmp, optlist,
sizeof(optlist) / sizeof(OPTLIST) - 1,
sizeof(OPTLIST), opts_cmp)) != NULL)
goto found;
/* Check for prefix match. */
prefix: op = opts_prefix(name);
found: if (op == NULL) {
msgq(sp, M_ERR,
"no %s option: 'set all' gives all option values",
name);
continue;
}
/* Find current option values. */
offset = op - optlist;
spo = sp->opts + offset;
/* Set name, value. */
switch (op->type) {
case OPT_0BOOL:
case OPT_1BOOL:
if (equals) {
msgq(sp, M_ERR,
"set: [no]%s option doesn't take a value",
name);
break;
}
if (op->func != NULL) {
if (op->func(sp, spo, NULL, turnoff)) {
rval = 1;
break;
}
} else if (turnoff)
O_CLR(sp, offset);
else
O_SET(sp, offset);
F_SET(&sp->opts[offset], OPT_SET);
break;
case OPT_NUM:
if (turnoff) {
msgq(sp, M_ERR,
"set: %s option isn't a boolean", name);
break;
}
if (!equals) {
msgq(sp, M_ERR,
"set: %s option requires a value", name);
break;
}
value = strtol(equals, &endp, 10);
if (*endp && !isspace(*endp)) {
msgq(sp, M_ERR,
"set %s: illegal number %s", name, equals);
break;
}
if (op->func != NULL) {
if (op->func(sp, spo, equals, value)) {
rval = 1;
break;
}
} else
O_VAL(sp, offset) = value;
F_SET(&sp->opts[offset], OPT_SET);
break;
case OPT_STR:
if (turnoff) {
msgq(sp, M_ERR,
"set: %s option isn't a boolean", name);
break;
}
if (!equals) {
msgq(sp, M_ERR,
"set: %s option requires a value", name);
break;
}
if (op->func != NULL) {
if (op->func(sp, spo, equals, (u_long)0)) {
rval = 1;
break;
}
} else {
if (F_ISSET(&sp->opts[offset], OPT_ALLOCATED))
free(O_STR(sp, offset));
if ((O_STR(sp, offset) =
strdup(equals)) == NULL) {
msgq(sp, M_ERR,
"Error: %s", strerror(errno));
rval = 1;
break;
} else
F_SET(&sp->opts[offset], OPT_ALLOCATED);
}
F_SET(&sp->opts[offset], OPT_SET);
break;
default:
abort();
}
}
if (all)
opts_dump(sp, 1);
return (rval);
}
/*
* opt_dump --
* List the current values of selected options.
*/
void
opts_dump(sp, all)
SCR *sp;
int all;
{
OPTLIST const *op;
int base, b_num, chcnt, cnt, col, colwidth, curlen, endcol, s_num;
int numcols, numrows, row, tablen, termwidth;
int b_op[O_OPTIONCOUNT], s_op[O_OPTIONCOUNT];
char nbuf[20];
/*
* Options are output in two groups -- those that fit at least two to
* a line and those that don't. We do output on tab boundaries for no
* particular reason. First get the set of options to list, keeping
* track of the length of each. No error checking, because we know
* that O_TERM was set so at least one option has the OPT_SET bit on.
* Termwidth is the tab stop before half of the line in the first loop,
* and the full line length later on.
*/
colwidth = -1;
tablen = O_VAL(sp, O_TABSTOP);
termwidth = (sp->cols - 1) / 2 & ~(tablen - 1);
for (b_num = s_num = 0, op = optlist; op->name; ++op) {
cnt = op - optlist;
if (!all && !F_ISSET(&sp->opts[cnt], OPT_SET))
continue;
curlen = strlen(op->name);
switch (op->type) {
case OPT_0BOOL:
case OPT_1BOOL:
if (!O_ISSET(sp, cnt))
curlen += 2;
break;
case OPT_NUM:
(void)snprintf(nbuf,
sizeof(nbuf), "%ld", O_VAL(sp, cnt));
curlen += strlen(nbuf);
break;
case OPT_STR:
curlen += strlen(O_STR(sp, cnt)) + 3;
break;
}
if (curlen < termwidth) {
if (colwidth < curlen)
colwidth = curlen;
s_op[s_num++] = cnt;
} else
b_op[b_num++] = cnt;
}
colwidth = (colwidth + tablen) & ~(tablen - 1);
termwidth = sp->cols - 1;
numcols = termwidth / colwidth;
if (s_num > numcols) {
numrows = s_num / numcols;
if (s_num % numcols)
++numrows;
} else
numrows = 1;
for (row = 0; row < numrows;) {
endcol = colwidth;
for (base = row, chcnt = col = 0; col < numcols; ++col) {
chcnt += opts_print(sp,
&optlist[s_op[base]], &sp->opts[s_op[base]]);
if ((base += numrows) >= s_num)
break;
while ((cnt =
(chcnt + tablen & ~(tablen - 1))) <= endcol) {
(void)putc('\t', sp->stdfp);
chcnt = cnt;
}
endcol += colwidth;
}
if (++row < numrows || b_num)
(void)putc('\n', sp->stdfp);
}
for (row = 0; row < b_num;) {
(void)opts_print(sp, &optlist[b_op[row]], &sp->opts[b_op[row]]);
if (++row < b_num)
(void)putc('\n', sp->stdfp);
}
(void)putc('\n', sp->stdfp);
}
/*
* opts_save --
* Write the current configuration to a file.
*/
int
opts_save(sp, fp)
SCR *sp;
FILE *fp;
{
OPTION *spo;
OPTLIST const *op;
int cnt;
for (spo = sp->opts, op = optlist; op->name; ++op) {
if (F_ISSET(op, OPT_NOSAVE))
continue;
cnt = op - optlist;
switch (op->type) {
case OPT_0BOOL:
case OPT_1BOOL:
if (O_ISSET(sp, cnt))
(void)fprintf(fp, "set %s\n", op->name);
else
(void)fprintf(fp, "set no%s\n", op->name);
break;
case OPT_NUM:
(void)fprintf(fp,
"set %s=%-3d\n", op->name, O_VAL(sp, cnt));
break;
case OPT_STR:
(void)fprintf(fp,
"set %s=\"%s\"\n", op->name, O_STR(sp, cnt));
break;
}
if (ferror(fp)) {
msgq(sp, M_ERR, "I/O error: %s", strerror(errno));
return (1);
}
}
return (0);
}
/*
* opts_print --
* Print out an option.
*/
static int
opts_print(sp, op, spo)
SCR *sp;
OPTLIST const *op;
OPTION *spo;
{
int curlen, offset;
curlen = 0;
offset = op - optlist;
switch (op->type) {
case OPT_0BOOL:
case OPT_1BOOL:
if (!O_ISSET(sp, offset)) {
curlen += 2;
(void)putc('n', sp->stdfp);
(void)putc('o', sp->stdfp);
}
curlen += fprintf(sp->stdfp, "%s", op->name);
break;
case OPT_NUM:
curlen += fprintf(sp->stdfp, "%s", op->name);
curlen += 1;
(void)putc('=', sp->stdfp);
curlen += fprintf(sp->stdfp, "%ld", O_VAL(sp, offset));
break;
case OPT_STR:
curlen += fprintf(sp->stdfp, "%s", op->name);
curlen += 1;
(void)putc('=', sp->stdfp);
curlen += 1;
(void)putc('"', sp->stdfp);
curlen += fprintf(sp->stdfp, "%s", O_STR(sp, offset));
curlen += 1;
(void)putc('"', sp->stdfp);
break;
}
return (curlen);
}
/*
* opts_prefix --
* Check to see if the name is the prefix of one (and only one)
* option. If so, return the option.
*/
static OPTLIST const *
opts_prefix(name)
char *name;
{
OPTLIST const *op, *save_op;
size_t len;
save_op = NULL;
len = strlen(name);
for (op = optlist; op->name != NULL; ++op) {
if (op->name[0] < name[0])
continue;
if (op->name[0] > name[0])
break;
if (!memcmp(op->name, name, len)) {
if (save_op != NULL)
return (NULL);
save_op = op;
}
}
return (save_op);
}
static int
opts_abbcmp(a, b)
const void *a, *b;
{
return(strcmp(((OABBREV *)a)->name, ((OABBREV *)b)->name));
}
static int
opts_cmp(a, b)
const void *a, *b;
{
return(strcmp(((OPTLIST *)a)->name, ((OPTLIST *)b)->name));
}