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ucm: optimize if_eval_string with common comparison helper

Browse source 
Refactor if_eval_string() to eliminate code duplication by introducing
a compare_strings() helper function that handles the common pattern of
retrieving, substituting, and comparing string pairs.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2026-02-06 18:25:01 +01:00
parent 27aa3e41ef
commit 30d1ae7221
1 changed files with 65 additions and 67 deletions
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132
src/ucm/ucm_cond.c
View file

@ -38,10 +38,70 @@ static int get_string(snd_config_t *compound, const char *key, const char **str)
return snd_config_get_string(node, str);
}
static int if_eval_string(snd_use_case_mgr_t *uc_mgr, snd_config_t *eval)
typedef int (*string_compare_t)(const char *s1, const char *s2);
static int compare_strings(snd_use_case_mgr_t *uc_mgr, snd_config_t *eval,
const char *key1, const char *key2,
string_compare_t compare)
{
const char *string1 = NULL, *string2 = NULL;
char *s1, *s2;
int err, result;
err = get_string(eval, key1, &string1);
if (err < 0 && err != -ENOENT) {
snd_error(UCM, "String error (If.Condition.%s)", key1);
return -EINVAL;
}
err = get_string(eval, key2, &string2);
if (err < 0 && err != -ENOENT) {
snd_error(UCM, "String error (If.Condition.%s)", key2);
return -EINVAL;
}
if (!string1 && !string2)
return -ENOENT; /* not found */
if (!string1) {
snd_error(UCM, "If.Condition.%s not defined", key1);
return -EINVAL;
}
if (!string2) {
snd_error(UCM, "If.Condition.%s not defined", key2);
return -EINVAL;
}
err = uc_mgr_get_substituted_value(uc_mgr, &s1, string1);
if (err < 0)
return err;
err = uc_mgr_get_substituted_value(uc_mgr, &s2, string2);
if (err < 0) {
free(s1);
return err;
}
result = compare(s1, s2);
free(s2);
free(s1);
return result;
}
static int string_equal(const char *s1, const char *s2)
{
return strcasecmp(s1, s2) == 0;
}
static int string_contains(const char *s1, const char *s2)
{
return strstr(s1, s2) != NULL;
}
static int if_eval_string(snd_use_case_mgr_t *uc_mgr, snd_config_t *eval)
{
const char *string1 = NULL;
char *s1;
int err;
if (uc_mgr->conf_format >= 3) {
@ -61,75 +121,13 @@ static int if_eval_string(snd_use_case_mgr_t *uc_mgr, snd_config_t *eval)
}
}
err = get_string(eval, "String1", &string1);
if (err < 0 && err != -ENOENT) {
snd_error(UCM, "String error (If.Condition.String1)");
return -EINVAL;
}
err = get_string(eval, "String2", &string2);
if (err < 0 && err != -ENOENT) {
snd_error(UCM, "String error (If.Condition.String2)");
return -EINVAL;
}
if (string1 || string2) {
if (string1 == NULL) {
snd_error(UCM, "If.Condition.String1 not defined");
return -EINVAL;
}
if (string2 == NULL) {
snd_error(UCM, "If.Condition.String2 not defined");
return -EINVAL;
}
err = uc_mgr_get_substituted_value(uc_mgr, &s1, string1);
if (err < 0)
return err;
err = uc_mgr_get_substituted_value(uc_mgr, &s2, string2);
if (err < 0) {
free(s1);
return err;
}
err = strcasecmp(s1, s2) == 0;
free(s2);
free(s1);
err = compare_strings(uc_mgr, eval, "String1", "String2", string_equal);
if (err != -ENOENT) /* -ENOENT means not found, continue checking */
return err;
}
err = get_string(eval, "Haystack", &string1);
if (err < 0 && err != -ENOENT) {
snd_error(UCM, "String error (If.Condition.Haystack)");
return -EINVAL;
}
err = get_string(eval, "Needle", &string2);
if (err < 0 && err != -ENOENT) {
snd_error(UCM, "String error (If.Condition.Needle)");
return -EINVAL;
}
if (string1 || string2) {
if (string1 == NULL) {
snd_error(UCM, "If.Condition.Haystack not defined");
return -EINVAL;
}
if (string2 == NULL) {
snd_error(UCM, "If.Condition.Needle not defined");
return -EINVAL;
}
err = uc_mgr_get_substituted_value(uc_mgr, &s1, string1);
if (err < 0)
return err;
err = uc_mgr_get_substituted_value(uc_mgr, &s2, string2);
if (err < 0) {
free(s1);
return err;
}
err = strstr(s1, s2) != NULL;
free(s2);
free(s1);
err = compare_strings(uc_mgr, eval, "Haystack", "Needle", string_contains);
if (err != -ENOENT)
return err;
}
snd_error(UCM, "Unknown String condition arguments");
return -EINVAL;