1
0
mirror of https://github.com/rkd77/elinks.git synced 2024-12-04 14:46:47 -05:00
elinks/src/config/opttypes.c

513 lines
12 KiB
C

/* Option variables types handlers */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <string.h>
#include "elinks.h"
#include "bfu/dialog.h"
#include "config/options.h"
#include "config/opttypes.h"
#include "intl/charsets.h"
#include "intl/libintl.h"
#include "util/color.h"
#include "util/conv.h"
#include "util/error.h"
#include "util/memory.h"
#include "util/string.h"
/* Commandline handlers. */
/* TAKE CARE! Remember that your _rd handler can be used for commandline
* parameters as well - probably, you don't want to be so syntactically
* strict, and _ESPECIALLY_ you don't want to move any file pointers ahead,
* since you will parse the commandline _TWO TIMES_! Remember! :-) */
int commandline = 0;
static const char *
gen_cmd(struct option *o, char ***argv, int *argc)
{
char *str;
int dummy_line = 0;
if (!*argc) return gettext("Parameter expected");
/* FIXME!! We will modify argv! (maybe) */
commandline = 1;
str = option_types[o->type].read2(o, *argv, &dummy_line);
commandline = 0;
if (str) {
/* We ate parameter */
(*argv)++; (*argc)--;
if (option_types[o->type].set(o, str)) {
mem_free(str);
return NULL;
}
mem_free(str);
}
return gettext("Read error");
}
/* If 0 follows, disable option and eat 0. If 1 follows, enable option and
* eat 1. If anything else follow, enable option and don't eat anything. */
static const char *
bool_cmd(struct option *o, char ***argv, int *argc)
{
o->value.number = 1;
if (!*argc) return NULL;
/* Argument is empty or longer than 1 char.. */
if (!(*argv)[0][0] || (*argv)[0][1]) return NULL;
switch ((*argv)[0][0]) {
case '0': o->value.number = 0; break;
case '1': o->value.number = 1; break;
default: return NULL;
}
/* We ate parameter */
(*argv)++; (*argc)--;
return NULL;
}
static const char *
exec_cmd(struct option *o, char ***argv, int *argc)
{
return o->value.command(o, argv, argc);
}
/* Wrappers for OPT_ALIAS. */
/* Note that they can wrap only to config_options now. I don't think it could be
* a problem, but who knows.. however, changing that will be pretty tricky -
* possibly changing ptr to structure containing target name and pointer to
* options list? --pasky */
static const char *
redir_cmd(struct option *opt, char ***argv, int *argc)
{
struct option *real = get_opt_rec(config_options, opt->value.string);
const char *ret = NULL;
assertm(real != NULL, "%s aliased to unknown option %s!", opt->name, opt->value.string);
if_assert_failed { return ret; }
if (option_types[real->type].cmdline) {
ret = option_types[real->type].cmdline(real, argv, argc);
if ((opt->flags & OPT_ALIAS_NEGATE) && real->type == OPT_BOOL) {
real->value.number = !real->value.number;
}
}
return ret;
}
static char *
redir_rd(struct option *opt, char **file, int *line)
{
struct option *real = get_opt_rec(config_options, opt->value.string);
char *ret = NULL;
assertm(real != NULL, "%s aliased to unknown option %s!", opt->name, opt->value.string);
if_assert_failed { return ret; }
if (option_types[real->type].read2) {
ret = option_types[real->type].read2(real, file, line);
if (ret && (opt->flags & OPT_ALIAS_NEGATE) && real->type == OPT_BOOL) {
*(long *) ret = !*(long *) ret;
}
}
return ret;
}
static void
redir_wr(struct option *opt, struct string *string)
{
struct option *real = get_opt_rec(config_options, opt->value.string);
assertm(real != NULL, "%s aliased to unknown option %s!", opt->name, opt->value.string);
if_assert_failed { return; }
if (option_types[real->type].write2)
option_types[real->type].write2(real, string);
}
static int
redir_set(struct option *opt, char *str)
{
struct option *real = get_opt_rec(config_options, opt->value.string);
int ret = 0;
assertm(real != NULL, "%s aliased to unknown option %s!", opt->name, opt->value.string);
if_assert_failed { return ret; }
if (option_types[real->type].set) {
long negated;
if ((opt->flags & OPT_ALIAS_NEGATE) && real->type == OPT_BOOL) {
negated = !*(long *) str;
str = (char *) &negated;
}
ret = option_types[real->type].set(real, str);
}
return ret;
}
static int
redir_eq(struct option *opt, const char *str)
{
struct option *real = get_opt_rec(config_options, opt->value.string);
int ret = 0;
assertm(real != NULL, "%s aliased to unknown option %s!", opt->name, opt->value.string);
if_assert_failed { return ret; }
if (option_types[real->type].equals) {
long negated;
if ((opt->flags & OPT_ALIAS_NEGATE) && real->type == OPT_BOOL) {
negated = !*(const long *) str;
str = (char *) &negated;
}
ret = option_types[real->type].equals(real, str);
}
return ret;
}
/* Support functions for config file parsing. */
static void
add_optstring_to_string(struct string *s, const char *q, int qlen)
{
if (!commandline) add_char_to_string(s, '"');
add_quoted_to_string(s, q, qlen);
if (!commandline) add_char_to_string(s, '"');
}
/* Config file handlers. */
static char *
num_rd(struct option *opt, char **file, int *line)
{
char *end = *file;
long *value = (long *)mem_alloc(sizeof(*value));
if (!value) return NULL;
/* We don't want to move file if (commandline), but strtolx() second
* parameter must not be NULL. */
*value = strtolx(*file, &end);
if (!commandline) *file = end;
/* Another trap for unwary - we need to check *end, not **file - reason
* is left as an exercise to the reader. */
if ((*end != 0 && (commandline || (!isspace((unsigned char)*end) && *end != '#')))
|| (*value < opt->min || *value > opt->max)) {
mem_free(value);
return NULL;
}
return (char *) value;
}
static int
num_set(struct option *opt, char *str)
{
/* In num_rd(), num_set(), and num_eq(), str always points
* to a long, even though these functions are only used for
* OPT_BOOL and OPT_INT, which use int option_value.number.
* redir_rd(), redir_set(), and redir_eq() expect this.
* So does l_set_option() in the Lua scripting backend. */
opt->value.number = *((long *) str);
return 1;
}
static int
num_eq(struct option *opt, const char *str)
{
return str && opt->value.number == *(const long *) str;
}
static void
num_wr(struct option *option, struct string *string)
{
add_knum_to_string(string, option->value.number);
}
static int
long_set(struct option *opt, char *str)
{
opt->value.big_number = *((long *) str);
return 1;
}
static int
long_eq(struct option *opt, const char *str)
{
return str && opt->value.big_number == *(const long *) str;
}
static void
long_wr(struct option *option, struct string *string)
{
add_knum_to_string(string, option->value.big_number);
}
static char *
str_rd(struct option *opt, char **file, int *line)
{
char *str = *file;
struct string str2;
if (!init_string(&str2)) return NULL;
/* We're getting used in some parser functions in conf.c as well, and
* that's w/ opt == NULL; so don't rely on opt to point anywhere. */
if (!commandline) {
if (!isquote(*str)) {
done_string(&str2);
return NULL;
}
str++;
}
while (*str && (commandline || !isquote(*str))) {
if (*str == '\\') {
/* FIXME: This won't work on crlf systems. */
if (str[1] == '\n') { str[1] = ' '; str++; (*line)++; }
/* When there's quote char, we will just move on there,
* thus we will never test for it in while () condition
* and we will treat it just as '"', ignoring the
* backslash itself. */
else if (isquote(str[1])) str++;
/* \\ means \. */
else if (str[1] == '\\') str++;
}
if (*str == '\n') (*line)++;
add_char_to_string(&str2, *str);
str++;
}
if (!commandline && !*str) {
done_string(&str2);
*file = str;
return NULL;
}
str++; /* Skip the quote. */
if (!commandline) *file = str;
if (opt && opt->max && str2.length >= opt->max) {
done_string(&str2);
return NULL;
}
return str2.source;
}
static int
str_set(struct option *opt, char *str)
{
assert(opt->value.string);
safe_strncpy(opt->value.string, str, MAX_STR_LEN);
return 1;
}
static int
str_eq(struct option *opt, const char *str)
{
return str && strcmp(opt->value.string, str) == 0;
}
static void
str_wr(struct option *o, struct string *s)
{
int len = strlen(o->value.string);
int_upper_bound(&len, o->max - 1);
add_optstring_to_string(s, o->value.string, len);
}
static void
str_dup(struct option *opt, struct option *template_, int flags)
{
char *new_ = (char *)mem_alloc(MAX_STR_LEN);
if (new_) safe_strncpy(new_, template_->value.string, MAX_STR_LEN);
opt->value.string = new_;
}
static int
cp_set(struct option *opt, char *str)
{
int ret = get_cp_index(str);
if (ret < 0) return 0;
opt->value.number = ret;
return 1;
}
static int
cp_eq(struct option *opt, const char *str)
{
return str && get_cp_index(str) == opt->value.number;
}
static void
cp_wr(struct option *o, struct string *s)
{
const char *mime_name = get_cp_config_name(o->value.number);
add_optstring_to_string(s, mime_name, strlen(mime_name));
}
static int
lang_set(struct option *opt, char *str)
{
#ifdef CONFIG_NLS
opt->value.number = name_to_language(str);
set_language(opt->value.number);
#endif
return 1;
}
static int
lang_eq(struct option *opt, const char *str)
{
#ifdef CONFIG_NLS
return str && name_to_language(str) == opt->value.number;
#else
return 1; /* All languages are the same. */
#endif
}
static void
lang_wr(struct option *o, struct string *s)
{
char *lang;
#ifdef CONFIG_NLS
lang = language_to_name(current_language);
#else
lang = "System";
#endif
add_optstring_to_string(s, lang, strlen(lang));
}
static int
color_set(struct option *opt, char *str)
{
return !decode_color(str, strlen(str), &opt->value.color);
}
static int
color_eq(struct option *opt, const char *str)
{
color_T color;
return str && !decode_color(str, strlen(str), &color)
&& color == opt->value.color;
}
static void
color_wr(struct option *opt, struct string *str)
{
color_T color = opt->value.color;
char hexcolor[8];
const char *strcolor = get_color_string(color, hexcolor);
add_optstring_to_string(str, strcolor, strlen(strcolor));
}
static void
tree_dup(struct option *opt, struct option *template_, int flags)
{
LIST_OF(struct option) *new_ = init_options_tree();
LIST_OF(struct option) *tree = template_->value.tree;
struct option *option;
if (!new_) return;
opt->value.tree = new_;
if (flags & CO_SHALLOW) return;
foreachback (option, *tree) {
struct option *new_opt = copy_option(option, flags);
if (!new_opt) continue;
object_nolock(new_opt, "option");
add_to_list_end(*new_, new_opt);
object_lock(new_opt);
new_opt->root = opt;
if (!new_opt->box_item) continue;
if (new_opt->name && !strcmp(new_opt->name, "_template_"))
new_opt->box_item->visible = get_opt_bool("config.show_template", NULL);
if (opt->box_item) {
add_to_list(opt->box_item->child,
new_opt->box_item);
}
}
}
const struct option_type_info option_types[] = {
/* The OPT_ comments below are here to be found by grep. */
/* OPT_BOOL */
{ N_("Boolean"), bool_cmd, num_rd, num_wr, NULL, num_set, num_eq, N_("[0|1]") },
/* OPT_INT */
{ N_("Integer"), gen_cmd, num_rd, num_wr, NULL, num_set, num_eq, N_("<num>") },
/* OPT_LONG */
{ N_("Longint"), gen_cmd, num_rd, long_wr, NULL, long_set, long_eq, N_("<num>") },
/* OPT_STRING */
{ N_("String"), gen_cmd, str_rd, str_wr, str_dup, str_set, str_eq, N_("<str>") },
/* OPT_CODEPAGE */
{ N_("Codepage"), gen_cmd, str_rd, cp_wr, NULL, cp_set, cp_eq, N_("<codepage>") },
/* OPT_LANGUAGE */
{ N_("Language"), gen_cmd, str_rd, lang_wr, NULL, lang_set, lang_eq, N_("<language>") },
/* OPT_COLOR */
{ N_("Color"), gen_cmd, str_rd, color_wr, NULL, color_set, color_eq, N_("<color|#rrggbb>") },
/* OPT_COMMAND */
{ N_("Special"), exec_cmd, NULL, NULL, NULL, NULL, NULL, "" },
/* OPT_ALIAS */
{ N_("Alias"), redir_cmd, redir_rd, redir_wr, NULL, redir_set, redir_eq, "" },
/* OPT_TREE */
{ N_("Folder"), NULL, NULL, NULL, tree_dup, NULL, NULL, "" },
};
const char *
get_option_type_name(enum option_type type)
{
assert(type >= 0 && type < sizeof(option_types)/sizeof(struct option_type_info));
if_assert_failed return "";
return option_types[type].name;
}