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NetBSD/usr.bin/vi/options.c

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/*-
* Copyright (c) 1991, 1993, 1994
* 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 8.52 (Berkeley) 3/24/94";
#endif /* not lint */
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <bitstring.h>
#include <ctype.h>
#include <errno.h>
#include <limits.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include "compat.h"
#include <db.h>
#include <regex.h>
#include <pathnames.h>
#include "vi.h"
#include "excmd.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 *));
/*
* O'Reilly noted options and abbreviations are from "Learning the VI Editor",
* Fifth Edition, May 1992. There's no way of knowing what systems they are
* actually from.
*
* HPUX noted options and abbreviations are from "The Ultimate Guide to the
* VI and EX Text Editors", 1990.
*/
static OPTLIST const optlist[] = {
/* O_ALTWERASE 4.4BSD */
{"altwerase", f_altwerase, OPT_0BOOL, 0},
/* O_AUTOINDENT 4BSD */
{"autoindent", NULL, OPT_0BOOL, 0},
/* O_AUTOPRINT 4BSD */
{"autoprint", NULL, OPT_1BOOL, 0},
/* O_AUTOWRITE 4BSD */
{"autowrite", NULL, OPT_0BOOL, 0},
/* O_BEAUTIFY 4BSD */
{"beautify", NULL, OPT_0BOOL, 0},
/* O_CDPATH 4.4BSD */
{"cdpath", f_cdpath, OPT_STR, 0},
/* O_COLUMNS 4.4BSD */
{"columns", f_columns, OPT_NUM, OPT_NOSAVE},
/* O_COMMENT 4.4BSD */
{"comment", NULL, OPT_0BOOL, 0},
/* O_DIGRAPH XXX: Elvis */
{"digraph", NULL, OPT_0BOOL, 0},
/* O_DIRECTORY 4BSD */
{"directory", NULL, OPT_STR, 0},
/* O_EDCOMPATIBLE 4BSD */
{"edcompatible",NULL, OPT_0BOOL, 0},
/* O_ERRORBELLS 4BSD */
{"errorbells", NULL, OPT_0BOOL, 0},
/* O_EXRC System V (undocumented) */
{"exrc", NULL, OPT_0BOOL, 0},
/* O_EXTENDED 4.4BSD */
{"extended", NULL, OPT_0BOOL, 0},
/* O_FLASH HPUX */
{"flash", NULL, OPT_1BOOL, 0},
/* O_HARDTABS 4BSD */
{"hardtabs", NULL, OPT_NUM, 0},
/* O_IGNORECASE 4BSD */
{"ignorecase", NULL, OPT_0BOOL, 0},
/* O_KEYTIME 4.4BSD */
{"keytime", f_keytime, OPT_NUM, 0},
/* O_LEFTRIGHT 4.4BSD */
{"leftright", f_leftright, OPT_0BOOL, 0},
/* O_LINES 4.4BSD */
{"lines", f_lines, OPT_NUM, OPT_NOSAVE},
/* O_LISP 4BSD */
/*
* XXX
* When the lisp option is implemented, delete
* the OPT_NOSAVE flag, so that :mkexrc dumps it.
*/
{"lisp", f_lisp, OPT_0BOOL, OPT_NOSAVE},
/* O_LIST 4BSD */
{"list", f_list, OPT_0BOOL, 0},
/* O_MAGIC 4BSD */
{"magic", NULL, OPT_1BOOL, 0},
/* O_MATCHTIME 4.4BSD */
{"matchtime", f_matchtime, OPT_NUM, 0},
/* O_MESG 4BSD */
{"mesg", f_mesg, OPT_1BOOL, 0},
/* O_MODELINE 4BSD */
{"modeline", f_modeline, OPT_0BOOL, 0},
/* O_NUMBER 4BSD */
{"number", f_number, OPT_0BOOL, 0},
/* O_OPEN 4BSD */
{"open", NULL, OPT_1BOOL, 0},
/* O_OPTIMIZE 4BSD */
{"optimize", NULL, OPT_1BOOL, 0},
/* O_PARAGRAPHS 4BSD */
{"paragraphs", f_paragraph, OPT_STR, 0},
/* O_PROMPT 4BSD */
{"prompt", NULL, OPT_1BOOL, 0},
/* O_READONLY 4BSD (undocumented) */
{"readonly", f_readonly, OPT_0BOOL, 0},
/* O_RECDIR 4.4BSD */
{"recdir", NULL, OPT_STR, 0},
/* O_REDRAW 4BSD */
{"redraw", NULL, OPT_0BOOL, 0},
/* O_REMAP 4BSD */
{"remap", NULL, OPT_1BOOL, 0},
/* O_REMAPMAX 4.4BSD */
{"remapmax", NULL, OPT_1BOOL, 0},
/* O_REPORT 4BSD */
{"report", NULL, OPT_NUM, OPT_NOSTR},
/* O_RULER 4.4BSD */
{"ruler", f_ruler, OPT_0BOOL, 0},
/* O_SCROLL 4BSD */
{"scroll", NULL, OPT_NUM, 0},
/* O_SECTIONS 4BSD */
{"sections", f_section, OPT_STR, 0},
/* O_SHELL 4BSD */
{"shell", NULL, OPT_STR, 0},
/* O_SHIFTWIDTH 4BSD */
{"shiftwidth", f_shiftwidth, OPT_NUM, 0},
/* O_SHOWDIRTY 4.4BSD */
{"showdirty", NULL, OPT_0BOOL, 0},
/* O_SHOWMATCH 4BSD */
{"showmatch", NULL, OPT_0BOOL, 0},
/* O_SHOWMODE 4.4BSD */
{"showmode", NULL, OPT_0BOOL, 0},
/* O_SIDESCROLL 4.4BSD */
{"sidescroll", f_sidescroll, OPT_NUM, 0},
/* O_SLOWOPEN 4BSD */
{"slowopen", NULL, OPT_0BOOL, 0},
/* O_SOURCEANY 4BSD (undocumented) */
{"sourceany", f_sourceany, OPT_0BOOL, 0},
/* O_TABSTOP 4BSD */
{"tabstop", f_tabstop, OPT_NUM, 0},
/* O_TAGLENGTH 4BSD */
{"taglength", NULL, OPT_NUM, OPT_NOSTR},
/* O_TAGS 4BSD */
{"tags", f_tags, OPT_STR, 0},
/* O_TERM 4BSD */
{"term", f_term, OPT_STR, OPT_NOSAVE},
/* O_TERSE 4BSD */
{"terse", NULL, OPT_0BOOL, 0},
/* O_TIMEOUT 4BSD (undocumented) */
{"timeout", NULL, OPT_1BOOL, 0},
/* O_TTYWERASE 4.4BSD */
{"ttywerase", f_ttywerase, OPT_0BOOL, 0},
/* O_VERBOSE 4.4BSD */
{"verbose", NULL, OPT_0BOOL, 0},
/* O_W1200 4BSD */
{"w1200", f_w1200, OPT_NUM, OPT_NEVER|OPT_NOSAVE},
/* O_W300 4BSD */
{"w300", f_w300, OPT_NUM, OPT_NEVER|OPT_NOSAVE},
/* O_W9600 4BSD */
{"w9600", f_w9600, OPT_NUM, OPT_NEVER|OPT_NOSAVE},
/* O_WARN 4BSD */
{"warn", NULL, OPT_1BOOL, 0},
/* O_WINDOW 4BSD */
{"window", f_window, OPT_NUM, 0},
/* O_WRAPMARGIN 4BSD */
{"wrapmargin", f_wrapmargin, OPT_NUM, OPT_NOSTR},
/* O_WRAPSCAN 4BSD */
{"wrapscan", NULL, OPT_1BOOL, 0},
/* O_WRITEANY 4BSD */
{"writeany", NULL, OPT_0BOOL, 0},
{NULL},
};
typedef struct abbrev {
char *name;
int offset;
} OABBREV;
static OABBREV const abbrev[] = {
{"ai", O_AUTOINDENT}, /* 4BSD */
{"ap", O_AUTOPRINT}, /* 4BSD */
{"aw", O_AUTOWRITE}, /* 4BSD */
{"bf", O_BEAUTIFY}, /* 4BSD */
{"co", O_COLUMNS}, /* 4.4BSD */
{"dir", O_DIRECTORY}, /* 4BSD */
{"eb", O_ERRORBELLS}, /* 4BSD */
{"ed", O_EDCOMPATIBLE}, /* 4BSD (undocumented) */
{"ex", O_EXRC}, /* System V (undocumented) */
{"ht", O_HARDTABS}, /* 4BSD */
{"ic", O_IGNORECASE}, /* 4BSD */
{"li", O_LINES}, /* 4.4BSD */
{"modelines", O_MODELINE}, /* HPUX */
{"nu", O_NUMBER}, /* 4BSD */
{"opt", O_OPTIMIZE}, /* 4BSD */
{"para", O_PARAGRAPHS}, /* 4BSD */
{"re", O_REDRAW}, /* O'Reilly */
{"ro", O_READONLY}, /* 4BSD (undocumented) */
{"scr", O_SCROLL}, /* 4BSD (undocumented) */
{"sect", O_SECTIONS}, /* O'Reilly */
{"sh", O_SHELL}, /* 4BSD */
{"slow", O_SLOWOPEN}, /* 4BSD */
{"sm", O_SHOWMATCH}, /* 4BSD */
{"sw", O_SHIFTWIDTH}, /* 4BSD */
{"tag", O_TAGS}, /* 4BSD (undocumented) */
{"tl", O_TAGLENGTH}, /* 4BSD */
{"to", O_TIMEOUT}, /* 4BSD (undocumented) */
{"ts", O_TABSTOP}, /* 4BSD */
{"tty", O_TERM}, /* 4BSD (undocumented) */
{"ttytype", O_TERM}, /* 4BSD (undocumented) */
{"w", O_WINDOW}, /* O'Reilly */
{"wa", O_WRITEANY}, /* 4BSD */
{"wi", O_WINDOW}, /* 4BSD (undocumented) */
{"wm", O_WRAPMARGIN}, /* 4BSD */
{"ws", O_WRAPSCAN}, /* 4BSD */
{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;
{
ARGS *argv[2], a, b;
OPTLIST const *op;
u_long v;
int cnt;
char *s, b1[1024];
a.bp = b1;
a.len = 0;
b.bp = NULL;
b.len = 0;
argv[0] = &a;
argv[1] = &b;
#define SET_DEF(opt, str) { \
if (str != b1) /* GCC puts strings in text-space. */ \
(void)strcpy(b1, str); \
a.len = strlen(b1); \
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);
(void)snprintf(b1, sizeof(b1), "cdpath=%s",
(s = getenv("CDPATH")) == NULL ? ":" : s);
SET_DEF(O_CDPATH, b1);
/*
* !!!
* Vi historically stored temporary files in /var/tmp. We store them
* in /tmp by default, hoping it's a memory based file system. There
* are two ways to change this -- the user can set either the directory
* option or the TMPDIR environmental variable.
*/
(void)snprintf(b1, sizeof(b1), "directory=%s",
(s = getenv("TMPDIR")) == NULL ? _PATH_TMP : s);
SET_DEF(O_DIRECTORY, b1);
SET_DEF(O_KEYTIME, "keytime=6");
SET_DEF(O_MATCHTIME, "matchtime=7");
SET_DEF(O_REPORT, "report=5");
SET_DEF(O_PARAGRAPHS, "paragraphs=IPLPPPQPP LIpplpipbp");
(void)snprintf(b1, sizeof(b1), "recdir=%s", _PATH_PRESERVE);
SET_DEF(O_RECDIR, b1);
(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);
/*
* The default window option values are:
* 8 if baud rate <= 600
* 16 if baud rate <= 1200
* LINES - 1 if baud rate > 1200
*/
v = baud_from_bval(sp);
if (v <= 600)
v = 8;
else if (v <= 1200)
v = 16;
else
v = O_VAL(sp, O_LINES) - 1;
(void)snprintf(b1, sizeof(b1), "window=%lu", v);
SET_DEF(O_WINDOW, b1);
SET_DEF(O_WRAPMARGIN, "wrapmargin=0");
/*
* By default, the historic vi always 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;
ARGS *argv[];
{
enum optdisp disp;
OABBREV atmp, *ap;
OPTLIST const *op;
OPTLIST otmp;
OPTION *spo;
u_long value, turnoff;
int ch, offset, rval;
char *endp, *equals, *name, *p;
disp = NO_DISPLAY;
for (rval = 0; (*argv)->len != 0; ++argv) {
/*
* The historic vi dumped the options for each occurrence of
* "all" in the set list. Puhleeze.
*/
if (!strcmp(argv[0]->bp, "all")) {
disp = ALL_DISPLAY;
continue;
}
/* Find equals sign or end of set, skipping backquoted chars. */
for (equals = NULL,
p = name = argv[0]->bp; (ch = *p) != '\0'; ++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);
goto change;
case OPT_NUM:
/*
* !!!
* Extension to historic vi. If the OPT_NOSTR flag is
* set, a numeric option may be turned off by using a
* "no" prefix, e.g. "nowrapmargin". (We assume that
* setting the value to 0 turns a numeric option off.)
*/
if (turnoff) {
if (F_ISSET(op, OPT_NOSTR)) {
value = 0;
goto nostr;
}
msgq(sp, M_ERR,
"set: %s option isn't a boolean", name);
break;
}
if (!equals) {
if (!disp)
disp = SELECT_DISPLAY;
F_SET(spo, OPT_SELECTED);
break;
}
value = strtol(equals, &endp, 10);
if (*endp && !isblank(*endp)) {
msgq(sp, M_ERR,
"set %s: illegal number %s", name, equals);
break;
}
nostr: if (op->func != NULL) {
if (op->func(sp, spo, equals, value)) {
rval = 1;
break;
}
} else
O_VAL(sp, offset) = value;
goto change;
case OPT_STR:
if (turnoff) {
msgq(sp, M_ERR,
"set: %s option isn't a boolean", name);
break;
}
if (!equals) {
if (!disp)
disp = SELECT_DISPLAY;
F_SET(spo, OPT_SELECTED);
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_SYSERR, NULL);
rval = 1;
break;
} else
F_SET(&sp->opts[offset], OPT_ALLOCATED);
}
change: if (sp->s_optchange != NULL)
(void)sp->s_optchange(sp, offset);
F_SET(&sp->opts[offset], OPT_SET);
break;
default:
abort();
}
}
if (disp != NO_DISPLAY)
opts_dump(sp, disp);
return (rval);
}
/*
* opts_dump --
* List the current values of selected options.
*/
void
opts_dump(sp, type)
SCR *sp;
enum optdisp type;
{
OPTLIST const *op;
int base, b_num, cnt, col, colwidth, curlen, s_num;
int numcols, numrows, row;
int b_op[O_OPTIONCOUNT], s_op[O_OPTIONCOUNT];
char nbuf[20];
/*
* XXX
* It's possible to get here by putting "set option" in the
* .exrc file. I can't think of a clean way to layer this,
* or a reasonable check to make, so we block it here.
*/
if (sp->stdfp == NULL) {
msgq(sp, M_ERR,
"Option display requires that the screen be initialized.");
return;
}
/*
* Options are output in two groups -- those that fit in a column and
* those that don't. Output is done on 6 character "tab" boundaries
* for no particular reason. (Since we don't output tab characters,
* we can ignore the terminal's tab settings.) Ignore the user's tab
* setting because we have no idea how reasonable it is.
*
* Find a column width we can live with.
*/
for (cnt = 6; cnt > 1; --cnt) {
colwidth = (sp->cols - 1) / cnt & ~(STANDARD_TAB - 1);
if (colwidth >= 10) {
colwidth =
(colwidth + STANDARD_TAB) & ~(STANDARD_TAB - 1);
break;
}
colwidth = 0;
}
/*
* Get the set of options to list, entering them into
* the column list or the overflow list.
*/
for (b_num = s_num = 0, op = optlist; op->name != NULL; ++op) {
cnt = op - optlist;
/* If OPT_NEVER set, it's never displayed. */
if (F_ISSET(op, OPT_NEVER))
continue;
switch (type) {
case ALL_DISPLAY: /* Display all. */
break;
case CHANGED_DISPLAY: /* Display changed. */
if (!F_ISSET(&sp->opts[cnt], OPT_SET))
continue;
break;
case SELECT_DISPLAY: /* Display selected. */
if (!F_ISSET(&sp->opts[cnt], OPT_SELECTED))
continue;
break;
default:
case NO_DISPLAY:
abort();
/* NOTREACHED */
}
F_CLR(&sp->opts[cnt], OPT_SELECTED);
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;
}
/* Offset by two so there's a gap. */
if (curlen < colwidth - 2)
s_op[s_num++] = cnt;
else
b_op[b_num++] = cnt;
}
if (s_num > 0) {
/* Figure out the number of columns. */
numcols = (sp->cols - 1) / colwidth;
if (s_num > numcols) {
numrows = s_num / numcols;
if (s_num % numcols)
++numrows;
} else
numrows = 1;
/* Display the options in sorted order. */
for (row = 0; row < numrows;) {
for (base = row, col = 0; col < numcols; ++col) {
cnt = opts_print(sp, &optlist[s_op[base]]);
if ((base += numrows) >= s_num)
break;
(void)ex_printf(EXCOOKIE,
"%*s", (int)(colwidth - cnt), "");
}
if (++row < numrows || b_num)
(void)ex_printf(EXCOOKIE, "\n");
}
}
for (row = 0; row < b_num;) {
(void)opts_print(sp, &optlist[b_op[row]]);
if (++row < b_num)
(void)ex_printf(EXCOOKIE, "\n");
}
(void)ex_printf(EXCOOKIE, "\n");
}
/*
* opts_print --
* Print out an option.
*/
static int
opts_print(sp, op)
SCR *sp;
OPTLIST const *op;
{
int curlen, offset;
curlen = 0;
offset = op - optlist;
switch (op->type) {
case OPT_0BOOL:
case OPT_1BOOL:
curlen += ex_printf(EXCOOKIE,
"%s%s", O_ISSET(sp, offset) ? "" : "no", op->name);
break;
case OPT_NUM:
curlen += ex_printf(EXCOOKIE,
"%s=%ld", op->name, O_VAL(sp, offset));
break;
case OPT_STR:
curlen += ex_printf(EXCOOKIE,
"%s=\"%s\"", op->name, O_STR(sp, offset));
break;
}
return (curlen);
}
/*
* opts_save --
* Write the current configuration to a file.
*/
int
opts_save(sp, fp)
SCR *sp;
FILE *fp;
{
OPTLIST const *op;
int ch, cnt;
char *p;
for (op = optlist; op->name != NULL; ++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 ");
for (p = op->name; (ch = *p) != '\0'; ++p) {
if (isblank(ch))
(void)putc('\\', fp);
(void)putc(ch, fp);
}
(void)putc('=', fp);
for (p = O_STR(sp, cnt); (ch = *p) != '\0'; ++p) {
if (isblank(ch))
(void)putc('\\', fp);
(void)putc(ch, fp);
}
(void)putc('\n', fp);
break;
}
if (ferror(fp)) {
msgq(sp, M_ERR, "I/O error: %s", strerror(errno));
return (1);
}
}
return (0);
}
/*
* 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));
}
/*
* opts_free --
* Free all option strings
*/
void
opts_free(sp)
SCR *sp;
{
int cnt;
char *p;
for (cnt = 0; cnt < O_OPTIONCOUNT; ++cnt)
if (F_ISSET(&sp->opts[cnt], OPT_ALLOCATED)) {
p = O_STR(sp, cnt);
FREE(p, strlen(p) + 1);
}
}
/*
* opts_copy --
* Copy a screen's OPTION array.
*/
int
opts_copy(orig, sp)
SCR *orig, *sp;
{
OPTION *op;
int cnt;
/* Copy most everything without change. */
memmove(sp->opts, orig->opts, sizeof(orig->opts));
/*
* Allocate copies of the strings -- keep trying to reallocate
* after ENOMEM failure, otherwise end up with more than one
* screen referencing the original memory.
*/
for (op = sp->opts, cnt = 0; cnt < O_OPTIONCOUNT; ++cnt, ++op)
if (F_ISSET(&sp->opts[cnt], OPT_ALLOCATED) &&
(O_STR(sp, cnt) = strdup(O_STR(sp, cnt))) == NULL) {
msgq(orig, M_SYSERR, NULL);
return (1);
}
return (0);
}
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