From: Michael Tremer <michael.tremer@ipfire.org>
Date: Sun, 23 May 2021 15:08:53 +0000 (+0000)
Subject: parser: Add function to list all namespaces
X-Git-Tag: 0.9.28~1285^2~94
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fa3cff8db6d18a10893dcac4c15778cc0942c099;p=pakfire.git

parser: Add function to list all namespaces

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/libpakfire/include/pakfire/parser.h b/src/libpakfire/include/pakfire/parser.h
index f7313b472..d572a1f87 100644
--- a/src/libpakfire/include/pakfire/parser.h
+++ b/src/libpakfire/include/pakfire/parser.h
@@ -49,6 +49,7 @@ char* pakfire_parser_expand(PakfireParser parser, const char* namespace, const c
 char* pakfire_parser_get(PakfireParser parser, const char* namespace, const char* name);
 char** pakfire_parser_get_split(PakfireParser parser,
 	const char* namespace, const char* name, char delim);
+char** pakfire_parser_list_namespaces(PakfireParser parser, const char* filter);
 
 int pakfire_parser_merge(PakfireParser parser1, PakfireParser parser2);
 
diff --git a/src/libpakfire/libpakfire.sym b/src/libpakfire/libpakfire.sym
index dea1a6a57..48d51b9f3 100644
--- a/src/libpakfire/libpakfire.sym
+++ b/src/libpakfire/libpakfire.sym
@@ -239,6 +239,7 @@ global:
 	pakfire_parser_get_namespace;
 	pakfire_parser_get_parent;
 	pakfire_parser_get_split;
+	pakfire_parser_list_namespaces;
 	pakfire_parser_merge;
 	pakfire_parser_parse;
 	pakfire_parser_read;
diff --git a/src/libpakfire/parser.c b/src/libpakfire/parser.c
index e03eca14a..e6b6714f2 100644
--- a/src/libpakfire/parser.c
+++ b/src/libpakfire/parser.c
@@ -19,6 +19,7 @@
 #############################################################################*/
 
 #include <errno.h>
+#include <fnmatch.h>
 #include <linux/limits.h>
 #include <regex.h>
 #include <stdlib.h>
@@ -613,6 +614,62 @@ PAKFIRE_EXPORT char** pakfire_parser_get_split(PakfireParser parser,
 	return list;
 }
 
+PAKFIRE_EXPORT char** pakfire_parser_list_namespaces(PakfireParser parser,
+		const char* filter) {
+	char** namespaces = NULL;
+	unsigned int counter = 0;
+
+	for (unsigned int i = 0; i < parser->num_declarations; i++) {
+		struct pakfire_parser_declaration* d = parser->declarations[i];
+	
+		if (filter) {
+			int r = fnmatch(filter, d->namespace, 0);
+
+			// Skip declaration if it does not match
+			if (r == FNM_NOMATCH)
+				continue;
+
+			// Check for any errors
+			else if (r > 0) {
+				ERROR(parser->pakfire, "fnmatch failed: %s\n", strerror(errno));
+				if (namespaces)
+					free(namespaces);
+
+				return NULL;
+			}
+		}
+
+		// Does this already exist on the list?
+		if (namespaces) {
+			int found = 0;
+
+			for (const char** namespace = namespaces; *namespace; namespace++) {
+				if (strcmp(d->namespace, *namespace) == 0) {
+					found = 1;
+					break;
+				}
+			}
+
+			// Skip adding if it already exists
+			if (found)
+				continue;
+		}
+
+		namespaces = reallocarray(namespaces, counter + 2, sizeof(*namespaces));
+		if (!namespaces)
+			return NULL;
+
+		// Add namespace
+		namespaces[counter++] = d->namespace;
+	}
+
+	// Terminate array
+	if (namespaces)
+		namespaces[counter] = NULL;
+
+	return namespaces;
+}
+
 PAKFIRE_EXPORT int pakfire_parser_merge(PakfireParser parser1, PakfireParser parser2) {
 	DEBUG(parser1->pakfire, "Merging parsers %p and %p\n", parser1, parser2);
 	char namespace[NAME_MAX*2+1];