Don't expose libsigrokdecode's interal GSList.

Instead, add a libsigrokdecode_list_decoders() API call which gives you
the list of known protocol decoders.

2 files changed, 14 insertions, 4 deletions

diff --git a/decode.c b/decode.c
index 536be2c..7125d32 100644
--- a/decode.c
+++ b/decode.c
@@ -31,7 +31,7 @@
 #endif
 
 /* The list of protocol decoders. */
-GSList *list_pds;
+GSList *list_pds = NULL;
 
 /**
  * Initialize libsigrokdecode.
@@ -71,6 +71,18 @@ int sigrokdecode_init(void)
 }
 
 /**
+ * Returns the list of supported/loaded protocol decoders.
+ *
+ * This is a GSList containing the names of the decoders as strings.
+ *
+ * @return List of decoders, NULL if none are supported or loaded.
+ */
+GSList *sigrokdecode_list_decoders(void)
+{
+	return list_pds;
+}
+
+/**
  * Helper function to handle Python strings.
  *
  * TODO: @param entries.
diff --git a/sigrokdecode.h b/sigrokdecode.h
index ecd141a..8877611 100644
--- a/sigrokdecode.h
+++ b/sigrokdecode.h
@@ -49,9 +49,6 @@
 #define SIGROKDECODE_ERR_PYTHON		-4 /* Python C API error */
 #define SIGROKDECODE_ERR_DECODERS_DIR	-5 /* Protocol decoder path invalid */
 
-/* The list of loaded protocol decoders. */
-GSList *list_pds;
-
 /* TODO: Documentation. */
 struct sigrokdecode_decoder {
 	char *id;
@@ -66,6 +63,7 @@ struct sigrokdecode_decoder {
 };
 
 int sigrokdecode_init(void);
+GSList *sigrokdecode_list_decoders(void);
 int sigrokdecode_load_decoder(const char *name, struct sigrokdecode_decoder **dec);
 int sigrokdecode_run_decoder(struct sigrokdecode_decoder *dec,
 			     uint8_t *inbuf, uint64_t inbuflen,