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ucm: fix variant issue where variables or macros are overwritten

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It is necessary to reset the state logic before each verb variant
is parsed. So save the original variable list and macros and
restore them before each parser iteration.

BugLink: https://github.com/alsa-project/alsa-ucm-conf/pull/633
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2025-11-07 17:59:12 +01:00
parent f6dce4f9d0
commit bd0ce670c2
3 changed files with 82 additions and 1 deletions
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4
src/ucm/ucm_local.h
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@ -327,6 +327,8 @@ struct ctl_list *uc_mgr_get_ctl_by_name(snd_use_case_mgr_t *uc_mgr,
snd_ctl_t *uc_mgr_get_ctl(snd_use_case_mgr_t *uc_mgr);
void uc_mgr_free_ctl_list(snd_use_case_mgr_t *uc_mgr);
void uc_mgr_free_value(struct list_head *base);
int uc_mgr_add_value(struct list_head *base, const char *key, char *val);
const char *uc_mgr_get_variable(snd_use_case_mgr_t *uc_mgr,
@ -338,6 +340,8 @@ int uc_mgr_set_variable(snd_use_case_mgr_t *uc_mgr,
int uc_mgr_delete_variable(snd_use_case_mgr_t *uc_mgr, const char *name);
int uc_mgr_duplicate_variables(struct list_head *dst, struct list_head *src);
int uc_mgr_get_substituted_value(snd_use_case_mgr_t *uc_mgr,
char **_rvalue,
const char *value);