[pulseaudio-discuss] [PATCH 2/3] conf-parser: Add support for parsing property lists.
Tanu Kaskinen
tanuk at iki.fi
Sat Dec 3 02:26:09 PST 2011
---
src/daemon/daemon-conf.c | 2 +-
src/modules/alsa/alsa-mixer.c | 4 +-
src/modules/module-augment-properties.c | 2 +-
src/pulse/client-conf.c | 2 +-
src/pulsecore/conf-parser.c | 46 ++++++++++++++++++++++++++++---
src/pulsecore/conf-parser.h | 17 ++++++++++-
6 files changed, 62 insertions(+), 11 deletions(-)
diff --git a/src/daemon/daemon-conf.c b/src/daemon/daemon-conf.c
index 3ef7f81..4532e9e 100644
--- a/src/daemon/daemon-conf.c
+++ b/src/daemon/daemon-conf.c
@@ -645,7 +645,7 @@ int pa_daemon_conf_load(pa_daemon_conf *c, const char *filename) {
ci.default_channel_map_set = ci.default_sample_spec_set = FALSE;
ci.conf = c;
- r = f ? pa_config_parse(c->config_file, f, table, NULL) : 0;
+ r = f ? pa_config_parse(c->config_file, f, table, NULL, NULL) : 0;
if (r >= 0) {
diff --git a/src/modules/alsa/alsa-mixer.c b/src/modules/alsa/alsa-mixer.c
index 36f3351..c646f31 100644
--- a/src/modules/alsa/alsa-mixer.c
+++ b/src/modules/alsa/alsa-mixer.c
@@ -2390,7 +2390,7 @@ pa_alsa_path* pa_alsa_path_new(const char *paths_dir, const char *fname, pa_alsa
fn = pa_maybe_prefix_path(fname, paths_dir);
- r = pa_config_parse(fn, NULL, items, p);
+ r = pa_config_parse(fn, NULL, items, NULL, p);
pa_xfree(fn);
if (r < 0)
@@ -4123,7 +4123,7 @@ pa_alsa_profile_set* pa_alsa_profile_set_new(const char *fname, const pa_channel
pa_run_from_build_tree() ? PA_BUILDDIR "/modules/alsa/mixer/profile-sets/" :
PA_ALSA_PROFILE_SETS_DIR);
- r = pa_config_parse(fn, NULL, items, ps);
+ r = pa_config_parse(fn, NULL, items, NULL, ps);
pa_xfree(fn);
if (r < 0)
diff --git a/src/modules/module-augment-properties.c b/src/modules/module-augment-properties.c
index 05f6f0a..d45bcdc 100644
--- a/src/modules/module-augment-properties.c
+++ b/src/modules/module-augment-properties.c
@@ -228,7 +228,7 @@ static void update_rule(struct rule *r) {
table[0].data = &r->application_name;
table[1].data = &r->icon_name;
- if (pa_config_parse(fn, NULL, table, r) < 0)
+ if (pa_config_parse(fn, NULL, table, NULL, r) < 0)
pa_log_warn("Failed to parse .desktop file %s.", fn);
pa_xfree(fn);
diff --git a/src/pulse/client-conf.c b/src/pulse/client-conf.c
index e2c2aae..3641e3e 100644
--- a/src/pulse/client-conf.c
+++ b/src/pulse/client-conf.c
@@ -127,7 +127,7 @@ int pa_client_conf_load(pa_client_conf *c, const char *filename) {
goto finish;
}
- r = f ? pa_config_parse(fn, f, table, NULL) : 0;
+ r = f ? pa_config_parse(fn, f, table, NULL, NULL) : 0;
if (!r)
r = pa_client_conf_load_cookie(c);
diff --git a/src/pulsecore/conf-parser.c b/src/pulsecore/conf-parser.c
index 41849c2..6602766 100644
--- a/src/pulsecore/conf-parser.c
+++ b/src/pulsecore/conf-parser.c
@@ -44,15 +44,17 @@ struct parser_state {
unsigned lineno;
char *section;
const pa_config_item *item_table;
+ pa_proplist *proplist;
char buf[4096];
void *userdata;
char *lvalue;
char *rvalue;
+ pa_bool_t in_proplist;
};
/* Run the user supplied parser for an assignment */
-static int next_assignment(struct parser_state *state) {
+static int normal_assignment(struct parser_state *state) {
const pa_config_item *item;
pa_assert(state);
@@ -76,6 +78,19 @@ static int next_assignment(struct parser_state *state) {
return -1;
}
+/* Parse a proplist entry. */
+static int proplist_assignment(struct parser_state *state) {
+ pa_assert(state);
+ pa_assert(state->proplist);
+
+ if (pa_proplist_sets(state->proplist, state->lvalue, state->rvalue) < 0) {
+ pa_log("[%s:%u] Failed to parse a proplist entry: %s = %s", state->filename, state->lineno, state->lvalue, state->rvalue);
+ return -1;
+ }
+
+ return 0;
+}
+
/* Parse a variable assignment line */
static int parse_line(struct parser_state *state) {
char *c;
@@ -102,7 +117,7 @@ static int parse_line(struct parser_state *state) {
}
}
- r = pa_config_parse(fn, NULL, state->item_table, state->userdata);
+ r = pa_config_parse(fn, NULL, state->item_table, state->proplist, state->userdata);
pa_xfree(path);
return r;
}
@@ -120,6 +135,17 @@ static int parse_line(struct parser_state *state) {
pa_xfree(state->section);
state->section = pa_xstrndup(state->lvalue + 1, k-2);
+
+ if (pa_streq(state->section, "Property List")) {
+ if (!state->proplist) {
+ pa_log("[%s:%u] \"Property List\" section is not allowed in this file.", state->filename, state->lineno);
+ return -1;
+ }
+
+ state->in_proplist = TRUE;
+ } else
+ state->in_proplist = FALSE;
+
return 0;
}
@@ -134,11 +160,14 @@ static int parse_line(struct parser_state *state) {
state->lvalue = pa_strip(state->lvalue);
state->rvalue = pa_strip(state->rvalue);
- return next_assignment(state);
+ if (state->in_proplist)
+ return proplist_assignment(state);
+ else
+ return normal_assignment(state);
}
/* Go through the file and parse each line */
-int pa_config_parse(const char *filename, FILE *f, const pa_config_item *t, void *userdata) {
+int pa_config_parse(const char *filename, FILE *f, const pa_config_item *t, pa_proplist *proplist, void *userdata) {
int r = -1;
pa_bool_t do_close = !f;
struct parser_state state;
@@ -162,6 +191,9 @@ int pa_config_parse(const char *filename, FILE *f, const pa_config_item *t, void
state.item_table = t;
state.userdata = userdata;
+ if (proplist)
+ state.proplist = pa_proplist_new();
+
while (!feof(f)) {
if (!fgets(state.buf, sizeof(state.buf), f)) {
if (feof(f))
@@ -177,9 +209,15 @@ int pa_config_parse(const char *filename, FILE *f, const pa_config_item *t, void
goto finish;
}
+ if (proplist)
+ pa_proplist_update(proplist, PA_UPDATE_REPLACE, state.proplist);
+
r = 0;
finish:
+ if (state.proplist)
+ pa_proplist_free(state.proplist);
+
pa_xfree(state.section);
if (do_close && f)
diff --git a/src/pulsecore/conf-parser.h b/src/pulsecore/conf-parser.h
index c6c8a14..9fb0110 100644
--- a/src/pulsecore/conf-parser.h
+++ b/src/pulsecore/conf-parser.h
@@ -24,6 +24,8 @@
#include <stdio.h>
+#include <pulse/proplist.h>
+
/* An abstract parser for simple, line based, shallow configuration
* files consisting of variable assignments only. */
@@ -39,8 +41,19 @@ typedef struct pa_config_item {
/* The configuration file parsing routine. Expects a table of
* pa_config_items in *t that is terminated by an item where lvalue is
- * NULL */
-int pa_config_parse(const char *filename, FILE *f, const pa_config_item *t, void *userdata);
+ * NULL.
+ *
+ * Some configuration files may contain a Property List section, which
+ * is a bit special. Normally all accepted lvalues must be predefined
+ * in the pa_config_item table, but in the Property List section the
+ * pa_config_item table is ignored, and all lvalues are accepted (as
+ * long as they are valid proplist keys). If the proplist pointer is
+ * non-NULL, the parser will parse any section named "Property List" as
+ * properties, and those properties will be merged into the given
+ * proplist. If proplist is NULL, then sections named "Property List"
+ * are not allowed at all in the configuration file.
+ */
+int pa_config_parse(const char *filename, FILE *f, const pa_config_item *t, pa_proplist *proplist, void *userdata);
/* Generic parsers for integers, size_t, booleans and strings */
int pa_config_parse_int(const char *filename, unsigned line, const char *section, const char *lvalue, const char *rvalue, void *data, void *userdata);
--
1.7.7.3
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