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ucm: add If.Condition.RegexMatch

Browse source 
If.1 {
	Condition {
		Type RegexMatch
		String "something to match"
		Regex ".*(thing)"
	}
	...
}

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2019-11-06 10:44:29 +01:00
parent af68b7718a
commit 337144392d
1 changed files with 46 additions and 0 deletions
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46
src/ucm/ucm_cond.c
View file

@ -25,6 +25,7 @@
*/
#include "ucm_local.h"
#include <regex.h>
static int get_string(snd_config_t *compound, const char *key, const char **str)
{
@ -117,6 +118,48 @@ static int if_eval_string(snd_use_case_mgr_t *uc_mgr, snd_config_t *eval)
return -EINVAL;
}
static int if_eval_regex_match(snd_use_case_mgr_t *uc_mgr, snd_config_t *eval)
{
const char *string, *regex_string;
char *s;
regex_t re;
int options = REG_EXTENDED | REG_ICASE;
regmatch_t match[1];
int err;
err = get_string(eval, "String", &string);
if (err < 0) {
uc_error("RegexMatch error (If.Condition.String)");
return -EINVAL;
}
err = get_string(eval, "Regex", &regex_string);
if (err < 0) {
uc_error("RegexMatch error (If.Condition.Regex)");
return -EINVAL;
}
err = uc_mgr_get_substituted_value(uc_mgr, &s, regex_string);
if (err < 0)
return err;
err = regcomp(&re, s, options);
free(s);
if (err) {
uc_error("Regex '%s' compilation failed (code %d)", err);
return -EINVAL;
}
err = uc_mgr_get_substituted_value(uc_mgr, &s, string);
if (err < 0) {
regfree(&re);
return err;
}
err = regexec(&re, s, ARRAY_SIZE(match), match, 0);
free(s);
regfree(&re);
return err == 0;
}
static int if_eval_control_exists(snd_use_case_mgr_t *uc_mgr, snd_config_t *eval)
{
snd_ctl_t *ctl;
@ -198,6 +241,9 @@ static int if_eval(snd_use_case_mgr_t *uc_mgr, snd_config_t *eval)
if (strcmp(type, "String") == 0)
return if_eval_string(uc_mgr, eval);
if (strcmp(type, "RegexMatch") == 0)
return if_eval_regex_match(uc_mgr, eval);
uc_error("unknown If.Condition.Type");
return -EINVAL;
}