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NetBSD/usr.bin/vi/common/options.c

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/* $NetBSD: options.c,v 1.4 2000/06/19 20:09:37 aymeric Exp $ */
/*-
* Copyright (c) 1991, 1993, 1994
* The Regents of the University of California. All rights reserved.
* Copyright (c) 1991, 1993, 1994, 1995, 1996
* Keith Bostic. All rights reserved.
*
* See the LICENSE file for redistribution information.
*/
#include "config.h"
#ifndef lint
static const char sccsid[] = "@(#)options.c 10.43 (Berkeley) 5/16/96";
#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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "common.h"
#include "../vi/vi.h"
#include "pathnames.h"
static int opts_abbcmp __P((const void *, const void *));
static int opts_cmp __P((const void *, const void *));
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.
*/
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_BACKUP 4.4BSD */
{"backup", NULL, OPT_STR, 0},
/* O_BEAUTIFY 4BSD */
{"beautify", NULL, OPT_0BOOL, 0},
/* O_CDPATH 4.4BSD */
{"cdpath", NULL, OPT_STR, 0},
/* O_CEDIT 4.4BSD */
{"cedit", NULL, OPT_STR, 0},
/* O_COLUMNS 4.4BSD */
{"columns", f_columns, OPT_NUM, OPT_NOSAVE},
/* O_COMMENT 4.4BSD */
{"comment", NULL, OPT_0BOOL, 0},
/* O_DIRECTORY 4BSD */
{"directory", NULL, OPT_STR, 0},
/* O_EDCOMPATIBLE 4BSD */
{"edcompatible",NULL, OPT_0BOOL, 0},
/* O_ESCAPETIME 4.4BSD */
{"escapetime", NULL, OPT_NUM, 0},
/* O_ERRORBELLS 4BSD */
{"errorbells", NULL, OPT_0BOOL, 0},
/* O_EXRC System V (undocumented) */
{"exrc", NULL, OPT_0BOOL, 0},
/* O_EXTENDED 4.4BSD */
{"extended", f_recompile, OPT_0BOOL, 0},
/* O_FILEC 4.4BSD */
{"filec", NULL, OPT_STR, 0},
/* O_FLASH HPUX */
{"flash", NULL, OPT_1BOOL, 0},
#ifdef GTAGS
/* O_GTAGSMODE FreeBSD, NetBSD */
{"gtagsmode", NULL, OPT_0BOOL, 0},
#endif
/* O_HARDTABS 4BSD */
{"hardtabs", NULL, OPT_NUM, 0},
/* O_ICLOWER 4.4BSD */
{"iclower", f_recompile, OPT_0BOOL, 0},
/* O_IGNORECASE 4BSD */
{"ignorecase", f_recompile, OPT_0BOOL, 0},
/* O_KEYTIME 4.4BSD */
{"keytime", NULL, OPT_NUM, 0},
/* O_LEFTRIGHT 4.4BSD */
{"leftright", f_reformat, 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_reformat, OPT_0BOOL, 0},
/* O_LOCKFILES 4.4BSD
* XXX
* Locking isn't reliable enough over NFS to require it, in addition,
* it's a serious startup performance problem over some remote links.
*/
{"lock", NULL, OPT_1BOOL, 0},
/* O_MAGIC 4BSD */
{"magic", NULL, OPT_1BOOL, 0},
/* O_MATCHTIME 4.4BSD */
{"matchtime", NULL, OPT_NUM, 0},
/* O_MESG 4BSD */
{"mesg", NULL, OPT_1BOOL, 0},
/* O_MODELINE 4BSD
* !!!
* This has been documented in historical systems as both "modeline"
* and as "modelines". Regardless of the name, this option represents
* a security problem of mammoth proportions, not to mention a stunning
* example of what your intro CS professor referred to as the perils of
* mixing code and data. Don't add it, or I will kill you.
*/
{"modeline", NULL, OPT_0BOOL, OPT_NOSET},
/* O_MSGCAT 4.4BSD */
{"msgcat", f_msgcat, OPT_STR, 0},
/* O_NOPRINT 4.4BSD */
{"noprint", f_print, OPT_STR, OPT_EARLYSET},
/* O_NUMBER 4BSD */
{"number", f_reformat, OPT_0BOOL, 0},
/* O_OCTAL 4.4BSD */
{"octal", f_print, OPT_0BOOL, OPT_EARLYSET},
/* 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_PRINT 4.4BSD */
{"print", f_print, OPT_STR, OPT_EARLYSET},
/* O_PROMPT 4BSD */
{"prompt", NULL, OPT_1BOOL, 0},
/* O_READONLY 4BSD (undocumented) */
{"readonly", f_readonly, OPT_0BOOL, OPT_ALWAYS},
/* 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_REPORT 4BSD */
{"report", NULL, OPT_NUM, 0},
/* O_RULER 4.4BSD */
{"ruler", NULL, OPT_0BOOL, 0},
/* O_SCROLL 4BSD */
{"scroll", NULL, OPT_NUM, 0},
/* O_SEARCHINCR 4.4BSD */
{"searchincr", NULL, OPT_0BOOL, 0},
/* O_SECTIONS 4BSD */
{"sections", f_section, OPT_STR, 0},
/* O_SECURE 4.4BSD */
{"secure", NULL, OPT_0BOOL, OPT_NOUNSET},
/* O_SHELL 4BSD */
{"shell", NULL, OPT_STR, 0},
/* O_SHELLMETA 4.4BSD */
{"shellmeta", NULL, OPT_STR, 0},
/* O_SHIFTWIDTH 4BSD */
{"shiftwidth", NULL, OPT_NUM, OPT_NOZERO},
/* O_SHOWMATCH 4BSD */
{"showmatch", NULL, OPT_0BOOL, 0},
/* O_SHOWMODE 4.4BSD */
{"showmode", NULL, OPT_0BOOL, 0},
/* O_SIDESCROLL 4.4BSD */
{"sidescroll", NULL, OPT_NUM, OPT_NOZERO},
/* O_SLOWOPEN 4BSD */
{"slowopen", NULL, OPT_0BOOL, 0},
/* O_SOURCEANY 4BSD (undocumented)
* !!!
* Historic vi, on startup, source'd $HOME/.exrc and ./.exrc, if they
* were owned by the user. The sourceany option was an undocumented
* feature of historic vi which permitted the startup source'ing of
* .exrc files the user didn't own. This is an obvious security problem,
* and we ignore the option.
*/
{"sourceany", NULL, OPT_0BOOL, OPT_NOSET},
/* O_TABSTOP 4BSD */
{"tabstop", f_reformat, OPT_NUM, OPT_NOZERO},
/* O_TAGLENGTH 4BSD */
{"taglength", NULL, OPT_NUM, 0},
/* O_TAGS 4BSD */
{"tags", NULL, OPT_STR, 0},
/* O_TERM 4BSD
* !!!
* By default, the historic vi always displayed information about two
* options, redraw and term. Term seems sufficient.
*/
{"term", NULL, OPT_STR, OPT_ADISP|OPT_NOSAVE},
/* O_TERSE 4BSD */
{"terse", NULL, OPT_0BOOL, 0},
/* O_TILDEOP 4.4BSD */
{"tildeop", 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_NDISP|OPT_NOSAVE},
/* O_W300 4BSD */
{"w300", f_w300, OPT_NUM, OPT_NDISP|OPT_NOSAVE},
/* O_W9600 4BSD */
{"w9600", f_w9600, OPT_NUM, OPT_NDISP|OPT_NOSAVE},
/* O_WARN 4BSD */
{"warn", NULL, OPT_1BOOL, 0},
/* O_WINDOW 4BSD */
{"window", f_window, OPT_NUM, 0},
/* O_WRAPLEN 4.4BSD */
{"wraplen", NULL, OPT_NUM, 0},
/* O_WRAPMARGIN 4BSD */
{"wrapmargin", NULL, OPT_NUM, 0},
/* 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 */
{"ex", O_EXRC}, /* System V (undocumented) */
#ifdef GTAGS
{"gt", O_GTAGSMODE}, /* FreeBSD, NetBSD */
#endif
{"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) */
{"wl", O_WRAPLEN}, /* 4.4BSD */
{"wm", O_WRAPMARGIN}, /* 4BSD */
{"ws", O_WRAPSCAN}, /* 4BSD */
{NULL},
};
/*
* opts_init --
* Initialize some of the options.
*
* PUBLIC: int opts_init __P((SCR *, int *));
*/
int
opts_init(sp, oargs)
SCR *sp;
int *oargs;
{
ARGS *argv[2], a, b;
OPTLIST const *op;
u_long v;
int cnt, optindx;
char *s, b1[1024];
a.bp = b1;
b.bp = NULL;
a.len = b.len = 0;
argv[0] = &a;
argv[1] = &b;
/* Set numeric and string default values. */
#define OI(indx, str) { \
if (str != b1) /* GCC puts strings in text-space. */ \
(void)strcpy(b1, str); \
a.len = strlen(b1); \
if (opts_set(sp, argv, NULL)) { \
optindx = indx; \
goto err; \
} \
}
/*
* Indirect global options to global space. Specifically, set up
* terminal, lines, columns first, they're used by other options.
* Note, don't set the flags until we've set up the indirection.
*/
if (o_set(sp, O_TERM, 0, NULL, GO_TERM))
goto err;
F_SET(&sp->opts[O_TERM], OPT_GLOBAL);
if (o_set(sp, O_LINES, 0, NULL, GO_LINES))
goto err;
F_SET(&sp->opts[O_LINES], OPT_GLOBAL);
if (o_set(sp, O_COLUMNS, 0, NULL, GO_COLUMNS))
goto err;
F_SET(&sp->opts[O_COLUMNS], OPT_GLOBAL);
if (o_set(sp, O_SECURE, 0, NULL, GO_SECURE))
goto err;
F_SET(&sp->opts[O_SECURE], OPT_GLOBAL);
/* Initialize string values. */
(void)snprintf(b1, sizeof(b1),
"cdpath=%s", (s = getenv("CDPATH")) == NULL ? ":" : s);
OI(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);
OI(O_DIRECTORY, b1);
OI(O_ESCAPETIME, "escapetime=1");
OI(O_KEYTIME, "keytime=6");
OI(O_MATCHTIME, "matchtime=7");
(void)snprintf(b1, sizeof(b1), "msgcat=%s", _PATH_MSGCAT);
OI(O_MSGCAT, b1);
OI(O_REPORT, "report=5");
OI(O_PARAGRAPHS, "paragraphs=IPLPPPQPP LIpplpipbp");
(void)snprintf(b1, sizeof(b1), "recdir=%s", _PATH_PRESERVE);
OI(O_RECDIR, b1);
OI(O_SECTIONS, "sections=NHSHH HUnhsh");
(void)snprintf(b1, sizeof(b1),
"shell=%s", (s = getenv("SHELL")) == NULL ? _PATH_BSHELL : s);
OI(O_SHELL, b1);
OI(O_SHELLMETA, "shellmeta=~{[*?$`'\"\\");
OI(O_SHIFTWIDTH, "shiftwidth=8");
OI(O_SIDESCROLL, "sidescroll=16");
OI(O_TABSTOP, "tabstop=8");
(void)snprintf(b1, sizeof(b1), "tags=%s", _PATH_TAGS);
OI(O_TAGS, b1);
/*
* XXX
* Initialize O_SCROLL here, after term; initializing term should
* have created a LINES/COLUMNS value.
*/
if ((v = (O_VAL(sp, O_LINES) - 1) / 2) == 0)
v = 1;
(void)snprintf(b1, sizeof(b1), "scroll=%ld", v);
OI(O_SCROLL, b1);
/*
* The default window option values are:
* 8 if baud rate <= 600
* 16 if baud rate <= 1200
* LINES - 1 if baud rate > 1200
*
* Note, the windows option code will correct any too-large value
* or when the O_LINES value is 1.
*/
if (sp->gp->scr_baud(sp, &v))
return (1);
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);
OI(O_WINDOW, b1);
/*
* Set boolean default values, and copy all settings into the
* the default information.
*/
for (op = optlist, cnt = 0; op->name != NULL; ++op, ++cnt)
switch (op->type) {
case OPT_0BOOL:
break;
case OPT_1BOOL:
O_SET(sp, cnt);
O_D_SET(sp, cnt);
break;
case OPT_NUM:
o_set(sp, cnt, OS_DEF, NULL, O_VAL(sp, cnt));
break;
case OPT_STR:
if (O_STR(sp, cnt) != NULL && o_set(sp,
cnt, OS_DEF | OS_STRDUP, O_STR(sp, cnt), 0))
goto err;
break;
default:
abort();
}
/*
* !!!
* Some options can be initialized by the command name or the
* command-line arguments. They don't set the default values,
* it's historic practice.
*/
for (; *oargs != -1; ++oargs)
OI(*oargs, optlist[*oargs].name);
return (0);
#undef OI
err: msgq(sp, M_ERR,
"031|Unable to set default %s option", optlist[optindx].name);
return (1);
}
/*
* opts_set --
* Change the values of one or more options.
*
* PUBLIC: int opts_set __P((SCR *, ARGS *[], char *));
*/
int
opts_set(sp, argv, usage)
SCR *sp;
ARGS *argv[];
char *usage;
{
enum optdisp disp;
enum nresult nret;
OPTLIST const *op;
OPTION *spo;
u_long value, turnoff;
int ch, equals, nf, nf2, offset, qmark, rval;
char *endp, *name, *p, *sep, *t;
disp = NO_DISPLAY;
for (rval = 0; argv[0]->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 question mark. */
for (sep = NULL, equals = qmark = 0,
p = name = argv[0]->bp; (ch = *p) != '\0'; ++p)
if (ch == '=' || ch == '?') {
if (p == name) {
if (usage != NULL)
msgq(sp, M_ERR,
"032|Usage: %s", usage);
return (1);
}
sep = p;
if (ch == '=')
equals = 1;
else
qmark = 1;
break;
}
turnoff = 0;
op = NULL;
if (sep != NULL)
*sep++ = '\0';
/* Search for the name, then name without any leading "no". */
if ((op = opts_search(name)) == NULL &&
name[0] == 'n' && name[1] == 'o') {
turnoff = 1;
name += 2;
op = opts_search(name);
}
if (op == NULL) {
msgq_str(sp, M_ERR, name,
"033|set: no %s option: 'set all' gives all option values");
rval = 1;
continue;
}
/* Find current option values. */
offset = op - optlist;
spo = sp->opts + offset;
/*
* !!!
* Historically, the question mark could be a separate
* argument.
*/
if (!equals && !qmark &&
argv[1]->len == 1 && argv[1]->bp[0] == '?') {
++argv;
qmark = 1;
}
/* Set name, value. */
switch (op->type) {
case OPT_0BOOL:
case OPT_1BOOL:
/* Some options may not be reset. */
if (F_ISSET(op, OPT_NOUNSET) && turnoff) {
msgq_str(sp, M_ERR, name,
"291|set: the %s option may not be turned off");
rval = 1;
break;
}
/* Some options may not be set. */
if (F_ISSET(op, OPT_NOSET) && !turnoff) {
msgq_str(sp, M_ERR, name,
"313|set: the %s option may never be turned on");
rval = 1;
break;
}
if (equals) {
msgq_str(sp, M_ERR, name,
"034|set: [no]%s option doesn't take a value");
rval = 1;
break;
}
if (qmark) {
if (!disp)
disp = SELECT_DISPLAY;
F_SET(spo, OPT_SELECTED);
break;
}
/*
* Do nothing if the value is unchanged, the underlying
* functions can be expensive.
*/
if (!F_ISSET(op, OPT_ALWAYS))
if (turnoff) {
if (!O_ISSET(sp, offset))
break;
} else {
if (O_ISSET(sp, offset))
break;
}
if (F_ISSET(op, OPT_EARLYSET)) {
/* Set the value. */
if (turnoff)
O_CLR(sp, offset);
else
O_SET(sp, offset);
}
/* Report to subsystems. */
if (op->func != NULL &&
op->func(sp, spo, NULL, &turnoff) ||
ex_optchange(sp, offset, NULL, &turnoff) ||
v_optchange(sp, offset, NULL, &turnoff) ||
sp->gp->scr_optchange(sp, offset, NULL, &turnoff)) {
rval = 1;
break;
}
if (!F_ISSET(op, OPT_EARLYSET)) {
/* Set the value. */
if (turnoff)
O_CLR(sp, offset);
else
O_SET(sp, offset);
}
break;
case OPT_NUM:
if (turnoff) {
msgq_str(sp, M_ERR, name,
"035|set: %s option isn't a boolean");
rval = 1;
break;
}
if (qmark || !equals) {
if (!disp)
disp = SELECT_DISPLAY;
F_SET(spo, OPT_SELECTED);
break;
}
if (!isdigit(sep[0]))
goto badnum;
if ((nret =
nget_uslong(&value, sep, &endp, 10)) != NUM_OK) {
p = msg_print(sp, name, &nf);
t = msg_print(sp, sep, &nf2);
switch (nret) {
case NUM_ERR:
msgq(sp, M_SYSERR,
"036|set: %s option: %s", p, t);
break;
case NUM_OVER:
msgq(sp, M_ERR,
"037|set: %s option: %s: value overflow", p, t);
break;
case NUM_OK:
case NUM_UNDER:
abort();
}
if (nf)
FREE_SPACE(sp, p, 0);
if (nf2)
FREE_SPACE(sp, t, 0);
rval = 1;
break;
}
if (*endp && !isblank(*endp)) {
badnum: p = msg_print(sp, name, &nf);
t = msg_print(sp, sep, &nf2);
msgq(sp, M_ERR,
"038|set: %s option: %s is an illegal number", p, t);
if (nf)
FREE_SPACE(sp, p, 0);
if (nf2)
FREE_SPACE(sp, t, 0);
rval = 1;
break;
}
/* Some options may never be set to zero. */
if (F_ISSET(op, OPT_NOZERO) && value == 0) {
msgq_str(sp, M_ERR, name,
"314|set: the %s option may never be set to 0");
rval = 1;
break;
}
/*
* Do nothing if the value is unchanged, the underlying
* functions can be expensive.
*/
if (!F_ISSET(op, OPT_ALWAYS) &&
O_VAL(sp, offset) == value)
break;
if (F_ISSET(op, OPT_EARLYSET)) {
/* Set the value. */
if (o_set(sp, offset, 0, NULL, value)) {
rval = 1;
break;
}
}
/* Report to subsystems. */
if (op->func != NULL &&
op->func(sp, spo, sep, &value) ||
ex_optchange(sp, offset, sep, &value) ||
v_optchange(sp, offset, sep, &value) ||
sp->gp->scr_optchange(sp, offset, sep, &value)) {
rval = 1;
break;
}
if (!F_ISSET(op, OPT_EARLYSET)) {
/* Set the value. */
if (o_set(sp, offset, 0, NULL, value))
rval = 1;
}
break;
case OPT_STR:
if (turnoff) {
msgq_str(sp, M_ERR, name,
"039|set: %s option isn't a boolean");
rval = 1;
break;
}
if (qmark || !equals) {
if (!disp)
disp = SELECT_DISPLAY;
F_SET(spo, OPT_SELECTED);
break;
}
/*
* Do nothing if the value is unchanged, the underlying
* functions can be expensive.
*/
if (!F_ISSET(op, OPT_ALWAYS) &&
O_STR(sp, offset) != NULL &&
!strcmp(O_STR(sp, offset), sep))
break;
if (F_ISSET(op, OPT_EARLYSET)) {
/* Set the value. */
if (o_set(sp, offset,
OS_FREE | OS_STRDUP, sep, 0)) {
rval = 1;
break;
}
}
/* Report to subsystems. */
if (op->func != NULL &&
op->func(sp, spo, sep, NULL) ||
ex_optchange(sp, offset, sep, NULL) ||
v_optchange(sp, offset, sep, NULL) ||
sp->gp->scr_optchange(sp, offset, sep, NULL)) {
rval = 1;
break;
}
if (!F_ISSET(op, OPT_EARLYSET)) {
/* Set the value. */
if (o_set(sp, offset, OS_FREE | OS_STRDUP, sep, 0))
rval = 1;
}
break;
default:
abort();
}
}
if (disp != NO_DISPLAY)
opts_dump(sp, disp);
return (rval);
}
/*
* o_set --
* Set an option's value.
*
* PUBLIC: int o_set __P((SCR *, int, u_int, char *, u_long));
*/
int
o_set(sp, opt, flags, str, val)
SCR *sp;
int opt;
u_int flags;
char *str;
u_long val;
{
OPTION *op;
/* Set a pointer to the options area. */
op = F_ISSET(&sp->opts[opt], OPT_GLOBAL) ?
&sp->gp->opts[sp->opts[opt].o_cur.val] : &sp->opts[opt];
/* Copy the string, if requested. */
if (LF_ISSET(OS_STRDUP) && (str = strdup(str)) == NULL) {
msgq(sp, M_SYSERR, NULL);
return (1);
}
/* Free the previous string, if requested, and set the value. */
if LF_ISSET(OS_DEF) {
if (LF_ISSET(OS_FREE) && op->o_def.str != NULL)
free(op->o_def.str);
if (LF_ISSET(OS_STR | OS_STRDUP))
op->o_def.str = str;
else
op->o_def.val = val;
} else {
if (LF_ISSET(OS_FREE) && op->o_cur.str != NULL)
free(op->o_cur.str);
if (LF_ISSET(OS_STR | OS_STRDUP))
op->o_cur.str = str;
else
op->o_cur.val = val;
}
return (0);
}
/*
* opts_empty --
* Return 1 if the string option is invalid, 0 if it's OK.
*
* PUBLIC: int opts_empty __P((SCR *, int, int));
*/
int
opts_empty(sp, off, silent)
SCR *sp;
int off, silent;
{
char *p;
if ((p = O_STR(sp, off)) == NULL || p[0] == '\0') {
if (!silent)
msgq_str(sp, M_ERR, optlist[off].name,
"305|No %s edit option specified");
return (1);
}
return (0);
}
/*
* opts_dump --
* List the current values of selected options.
*
* PUBLIC: void opts_dump __P((SCR *, enum optdisp));
*/
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];
/*
* 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, testing from 10 columns to 1.
*/
for (numcols = 10; numcols > 1; --numcols) {
colwidth = sp->cols / numcols & ~(STANDARD_TAB - 1);
if (colwidth >= 10) {
colwidth =
(colwidth + STANDARD_TAB) & ~(STANDARD_TAB - 1);
numcols = sp->cols / colwidth;
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_NDISP set, it's never displayed. */
if (F_ISSET(op, OPT_NDISP))
continue;
switch (type) {
case ALL_DISPLAY: /* Display all. */
break;
case CHANGED_DISPLAY: /* Display changed. */
/* If OPT_ADISP set, it's always "changed". */
if (F_ISSET(op, OPT_ADISP))
break;
switch (op->type) {
case OPT_0BOOL:
case OPT_1BOOL:
case OPT_NUM:
if (O_VAL(sp, cnt) == O_D_VAL(sp, cnt))
continue;
break;
case OPT_STR:
if (O_STR(sp, cnt) == O_D_STR(sp, cnt) ||
O_D_STR(sp, cnt) != NULL &&
!strcmp(O_STR(sp, cnt), O_D_STR(sp, cnt)))
continue;
break;
}
break;
case SELECT_DISPLAY: /* Display selected. */
if (!F_ISSET(&sp->opts[cnt], OPT_SELECTED))
continue;
break;
default:
case NO_DISPLAY:
abort();
}
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:
if (O_STR(sp, cnt) != NULL)
curlen += strlen(O_STR(sp, cnt));
curlen += 3;
break;
}
/* Offset by 2 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 rows. */
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(sp, "%*s",
(int)(colwidth - cnt), "");
}
if (++row < numrows || b_num)
(void)ex_puts(sp, "\n");
}
}
for (row = 0; row < b_num;) {
(void)opts_print(sp, &optlist[b_op[row]]);
if (++row < b_num)
(void)ex_puts(sp, "\n");
}
(void)ex_puts(sp, "\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(sp,
"%s%s", O_ISSET(sp, offset) ? "" : "no", op->name);
break;
case OPT_NUM:
curlen += ex_printf(sp, "%s=%ld", op->name, O_VAL(sp, offset));
break;
case OPT_STR:
curlen += ex_printf(sp, "%s=\"%s\"", op->name,
O_STR(sp, offset) == NULL ? "" : O_STR(sp, offset));
break;
}
return (curlen);
}
/*
* opts_save --
* Write the current configuration to a file.
*
* PUBLIC: int opts_save __P((SCR *, 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=%-3ld\n", op->name, O_VAL(sp, cnt));
break;
case OPT_STR:
if (O_STR(sp, cnt) == NULL)
break;
(void)fprintf(fp, "set ");
for (p = op->name; (ch = *p) != '\0'; ++p) {
if (isblank(ch) || ch == '\\')
(void)putc('\\', fp);
(void)putc(ch, fp);
}
(void)putc('=', fp);
for (p = O_STR(sp, cnt); (ch = *p) != '\0'; ++p) {
if (isblank(ch) || ch == '\\')
(void)putc('\\', fp);
(void)putc(ch, fp);
}
(void)putc('\n', fp);
break;
}
if (ferror(fp)) {
msgq(sp, M_SYSERR, NULL);
return (1);
}
}
return (0);
}
/*
* opts_search --
* Search for an option.
*
* PUBLIC: OPTLIST const *opts_search __P((char *));
*/
OPTLIST const *
opts_search(name)
char *name;
{
OPTLIST const *op, *found;
OABBREV atmp, *ap;
OPTLIST otmp;
size_t len;
/* Check list of abbreviations. */
atmp.name = name;
if ((ap = bsearch(&atmp, abbrev, sizeof(abbrev) / sizeof(OABBREV) - 1,
sizeof(OABBREV), opts_abbcmp)) != NULL)
return (optlist + ap->offset);
/* Check list of options. */
otmp.name = name;
if ((op = bsearch(&otmp, optlist, sizeof(optlist) / sizeof(OPTLIST) - 1,
sizeof(OPTLIST), opts_cmp)) != NULL)
return (op);
/*
* Check to see if the name is the prefix of one (and only one)
* option. If so, return the option.
*/
len = strlen(name);
for (found = NULL, 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 (found != NULL)
return (NULL);
found = op;
}
}
return (found);
}
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_copy --
* Copy a screen's OPTION array.
*
* PUBLIC: int opts_copy __P((SCR *, SCR *));
*/
int
opts_copy(orig, sp)
SCR *orig, *sp;
{
int cnt, rval;
/* Copy most everything without change. */
memmove(sp->opts, orig->opts, sizeof(orig->opts));
/* Copy the string edit options. */
for (cnt = rval = 0; cnt < O_OPTIONCOUNT; ++cnt) {
if (optlist[cnt].type != OPT_STR ||
F_ISSET(&optlist[cnt], OPT_GLOBAL))
continue;
/*
* If never set, or already failed, NULL out the entries --
* have to continue after failure, otherwise would have two
* screens referencing the same memory.
*/
if (rval || O_STR(sp, cnt) == NULL) {
o_set(sp, cnt, OS_STR, NULL, 0);
o_set(sp, cnt, OS_DEF | OS_STR, NULL, 0);
continue;
}
/* Copy the current string. */
if (o_set(sp, cnt, OS_STRDUP, O_STR(sp, cnt), 0)) {
o_set(sp, cnt, OS_DEF | OS_STR, NULL, 0);
goto nomem;
}
/* Copy the default string. */
if (O_D_STR(sp, cnt) != NULL &&
o_set(sp, cnt, OS_DEF | OS_STRDUP, O_D_STR(sp, cnt), 0)) {
nomem: msgq(orig, M_SYSERR, NULL);
rval = 1;
}
}
return (rval);
}
/*
* opts_free --
* Free all option strings
*
* PUBLIC: void opts_free __P((SCR *));
*/
void
opts_free(sp)
SCR *sp;
{
int cnt;
for (cnt = 0; cnt < O_OPTIONCOUNT; ++cnt) {
if (optlist[cnt].type != OPT_STR ||
F_ISSET(&optlist[cnt], OPT_GLOBAL))
continue;
if (O_STR(sp, cnt) != NULL)
free(O_STR(sp, cnt));
if (O_D_STR(sp, cnt) != NULL)
free(O_D_STR(sp, cnt));
}
}
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