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config: Report errors before the line number is lost.

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This commit is contained in:
Kalle Olavi Niemitalo 2008-02-03 03:15:57 +02:00 committed by Kalle Olavi Niemitalo
parent 1f0c361ead
commit edad2ddccd
1 changed files with 66 additions and 48 deletions
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112
src/config/conf.c
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@ -76,8 +76,33 @@ struct conf_parsing_state {
*
* @invariant @c mirrored @<= @c pos.look */
unsigned char *mirrored;
/** File name for error messages. If NULL then do not display
* error messages. */
const unsigned char *filename;
};
/** Tell the user about an error in the configuration file.
* @return @a err, for convenience. */
static enum parse_error
show_parse_error(const struct conf_parsing_state *state, enum parse_error err)
{
static const unsigned char error_msg[][40] = {
"no error", /* ERROR_NONE */
"unknown command", /* ERROR_COMMAND */
"parse error", /* ERROR_PARSE */
"unknown option", /* ERROR_OPTION */
"bad value", /* ERROR_VALUE */
"no memory left", /* ERROR_NOMEM */
};
if (state->filename) {
fprintf(stderr, "%s:%d: %s\n",
state->filename, state->pos.line, error_msg[err]);
}
return err;
}
/** Skip comments and whitespace. */
static void
skip_white(struct conf_parsing_pos *pos)
@ -116,7 +141,7 @@ parse_set(struct option *opt_tree, struct conf_parsing_state *state,
unsigned char *optname;
skip_white(&state->pos);
if (!*state->pos.look) return ERROR_PARSE;
if (!*state->pos.look) return show_parse_error(state, ERROR_PARSE);
/* Option name */
optname = state->pos.look;
@ -125,15 +150,21 @@ parse_set(struct option *opt_tree, struct conf_parsing_state *state,
state->pos.look++;
optname = memacpy(optname, state->pos.look - optname);
if (!optname) return ERROR_NOMEM;
if (!optname) return show_parse_error(state, ERROR_NOMEM);
skip_white(&state->pos);
/* Equal sign */
if (*state->pos.look != '=') { mem_free(optname); return ERROR_PARSE; }
if (*state->pos.look != '=') {
mem_free(optname);
return show_parse_error(state, ERROR_PARSE);
}
state->pos.look++; /* '=' */
skip_white(&state->pos);
if (!*state->pos.look) { mem_free(optname); return ERROR_VALUE; }
if (!*state->pos.look) {
mem_free(optname);
return show_parse_error(state, ERROR_VALUE);
}
/* Mirror what we already have */
if (mirror) {
@ -151,14 +182,14 @@ parse_set(struct option *opt_tree, struct conf_parsing_state *state,
mem_free(optname);
if (!opt || (opt->flags & OPT_HIDDEN))
return ERROR_OPTION;
return show_parse_error(state, ERROR_OPTION);
if (!option_types[opt->type].read)
return ERROR_VALUE;
return show_parse_error(state, ERROR_VALUE);
val = option_types[opt->type].read(opt, &state->pos.look,
&state->pos.line);
if (!val) return ERROR_VALUE;
if (!val) return show_parse_error(state, ERROR_VALUE);
if (mirror) {
if (opt->flags & OPT_DELETED)
@ -172,7 +203,7 @@ parse_set(struct option *opt_tree, struct conf_parsing_state *state,
} else if (!option_types[opt->type].set
|| !option_types[opt->type].set(opt, val)) {
mem_free(val);
return ERROR_VALUE;
return show_parse_error(state, ERROR_VALUE);
}
/* This is not needed since this will be WATERMARK'd when
* saving it. We won't need to save it as touched. */
@ -193,7 +224,7 @@ parse_unset(struct option *opt_tree, struct conf_parsing_state *state,
* quick hack than anything now. --pasky */
skip_white(&state->pos);
if (!*state->pos.look) return ERROR_PARSE;
if (!*state->pos.look) return show_parse_error(state, ERROR_PARSE);
/* Option name */
optname = state->pos.look;
@ -202,12 +233,12 @@ parse_unset(struct option *opt_tree, struct conf_parsing_state *state,
state->pos.look++;
optname = memacpy(optname, state->pos.look - optname);
if (!optname) return ERROR_NOMEM;
if (!optname) return show_parse_error(state, ERROR_NOMEM);
/* Mirror what we have */
if (mirror) {
add_bytes_to_string(mirror, state->mirrored,
state->pos.look - state->mirrored))
state->pos.look - state->mirrored);
state->mirrored = state->pos.look;
}
@ -218,7 +249,7 @@ parse_unset(struct option *opt_tree, struct conf_parsing_state *state,
mem_free(optname);
if (!opt || (opt->flags & OPT_HIDDEN))
return ERROR_OPTION;
return show_parse_error(state, ERROR_OPTION);
if (!mirror) {
if (opt->flags & OPT_ALLOC) delete_option(opt);
@ -242,14 +273,14 @@ parse_bind(struct option *opt_tree, struct conf_parsing_state *state,
enum parse_error err = ERROR_NONE;
skip_white(&state->pos);
if (!*state->pos.look) return ERROR_PARSE;
if (!*state->pos.look) return show_parse_error(state, ERROR_PARSE);
/* Keymap */
keymap = option_types[OPT_STRING].read(NULL, &state->pos.look,
&state->pos.line);
skip_white(&state->pos);
if (!keymap || !*state->pos.look)
return ERROR_OPTION;
return show_parse_error(state, ERROR_OPTION);
/* Keystroke */
keystroke = option_types[OPT_STRING].read(NULL, &state->pos.look,
@ -257,21 +288,21 @@ parse_bind(struct option *opt_tree, struct conf_parsing_state *state,
skip_white(&state->pos);
if (!keystroke || !*state->pos.look) {
mem_free(keymap); mem_free_if(keystroke);
return ERROR_OPTION;
return show_parse_error(state, ERROR_OPTION);
}
/* Equal sign */
skip_white(&state->pos);
if (*state->pos.look != '=') {
mem_free(keymap); mem_free(keystroke);
return ERROR_PARSE;
return show_parse_error(state, ERROR_PARSE);
}
state->pos.look++; /* '=' */
skip_white(&state->pos);
if (!*state->pos.look) {
mem_free(keymap); mem_free(keystroke);
return ERROR_PARSE;
return show_parse_error(state, ERROR_PARSE);
}
/* Action */
@ -280,7 +311,7 @@ parse_bind(struct option *opt_tree, struct conf_parsing_state *state,
&state->pos.line);
if (!action) {
mem_free(keymap); mem_free(keystroke);
return ERROR_VALUE;
return show_parse_error(state, ERROR_VALUE);
}
if (mirror) {
@ -294,14 +325,14 @@ parse_bind(struct option *opt_tree, struct conf_parsing_state *state,
mem_free(act_str);
state->mirrored = state->pos.look;
} else {
err = ERROR_VALUE;
err = show_parse_error(state, ERROR_VALUE);
}
} else {
/* We don't bother to bind() if -default-keys. */
if (!get_cmd_opt_bool("default-keys")
&& bind_do(keymap, keystroke, action, is_system_conf)) {
/* bind_do() tried but failed. */
err = ERROR_VALUE;
err = show_parse_error(state, ERROR_VALUE);
} else {
err = ERROR_NONE;
}
@ -320,12 +351,13 @@ parse_include(struct option *opt_tree, struct conf_parsing_state *state,
unsigned char *fname;
struct string dumbstring;
if (!init_string(&dumbstring)) return ERROR_NOMEM;
if (!init_string(&dumbstring))
return show_parse_error(state, ERROR_NOMEM);
skip_white(&state->pos);
if (!*state->pos.look) {
done_string(&dumbstring);
return ERROR_PARSE;
return show_parse_error(state, ERROR_PARSE);
}
/* File name */
@ -333,7 +365,7 @@ parse_include(struct option *opt_tree, struct conf_parsing_state *state,
&state->pos.line);
if (!fname) {
done_string(&dumbstring);
return ERROR_VALUE;
return show_parse_error(state, ERROR_VALUE);
}
/* We want load_config_file() to watermark stuff, but not to load
@ -348,7 +380,7 @@ parse_include(struct option *opt_tree, struct conf_parsing_state *state,
fname, opt_tree, &dumbstring, is_system_conf)) {
done_string(&dumbstring);
mem_free(fname);
return ERROR_VALUE;
return show_parse_error(state, ERROR_VALUE);
}
done_string(&dumbstring);
@ -382,7 +414,7 @@ parse_config_command(struct option *options, struct conf_parsing_state *state,
/* If we're mirroring, then everything up to this point must
* have already been mirrored. */
assert(mirror == NULL || state->mirrored == state->pos.look);
if_assert_failed return ERROR_PARSE;
if_assert_failed return show_parse_error(state, ERROR_PARSE);
for (handler = parse_handlers; handler->command;
handler++) {
@ -406,7 +438,7 @@ parse_config_command(struct option *options, struct conf_parsing_state *state,
}
}
return ERROR_COMMAND;
return show_parse_error(state, ERROR_COMMAND);
}
#ifdef CONFIG_EXMODE
@ -418,6 +450,7 @@ parse_config_exmode_command(unsigned char *cmd)
state.pos.look = cmd;
state.pos.line = 0;
state.mirrored = NULL; /* not read because mirror is NULL too */
state.filename = NULL; /* prevent error messages */
return parse_config_command(config_options, &state, NULL, 0);
}
@ -430,22 +463,16 @@ parse_config_file(struct option *options, unsigned char *name,
{
struct conf_parsing_state state = {{ 0 }};
int error_occurred = 0;
enum parse_error err = 0;
enum verbose_level verbose = get_cmd_opt_int("verbose");
static const unsigned char error_msg[][40] = {
"no error", /* ERROR_NONE */
"unknown command", /* ERROR_COMMAND */
"parse error", /* ERROR_PARSE */
"unknown option", /* ERROR_OPTION */
"bad value", /* ERROR_VALUE */
"no memory left", /* ERROR_NOMEM */
};
state.pos.look = file;
state.pos.line = 1;
state.mirrored = file;
if (!mirror && get_cmd_opt_int("verbose") >= VERBOSE_WARNINGS)
state.filename = name;
while (state.pos.look && *state.pos.look) {
enum parse_error err = ERROR_NONE;
/* Skip all possible comments and whitespace. */
skip_white(&state.pos);
@ -476,20 +503,11 @@ parse_config_file(struct option *options, unsigned char *name,
}
}
if (!mirror && err) {
/* TODO: Make this a macro and report error directly
* as it's stumbled upon; line info may not be accurate
* anymore now (?). --pasky */
if (verbose >= VERBOSE_WARNINGS) {
fprintf(stderr, "%s:%d: %s\n",
name, state.pos.line, error_msg[err]);
if (err != ERROR_NONE)
error_occurred = 1;
}
err = 0;
}
}
if (!error_occurred) return;
if (!error_occurred || !state.filename) return;
/* If an error occurred make sure that the user is notified and is able
* to see it. First sound the bell. Then, if the text viewer is going to