index: write out only packages specified in command line

Ignore /etc/apk/repositories, so additional repositories that depend
on other repositories need to have explicit --repository reference on
command line when generating the index (to avoid warnings).

src/apk_database.h

@@ -108,7 +108,7 @@ struct apk_package *apk_db_pkg_add_file(struct apk_database *db, const char *fil
 struct apk_package *apk_db_get_pkg(struct apk_database *db, csum_t sum);
 struct apk_package *apk_db_get_file_owner(struct apk_database *db, apk_blob_t filename);
 
-void apk_db_index_write(struct apk_database *db, struct apk_ostream *os);
+int apk_db_index_write(struct apk_database *db, struct apk_ostream *os);
 
 int apk_db_add_repository(apk_database_t db, apk_blob_t repository);
 int apk_db_recalculate_and_commit(struct apk_database *db);

src/database.c

@@ -645,6 +645,15 @@ int apk_db_open(struct apk_database *db, const char *root)
 			free(db->root);
 			return -errno;
 		}
+
+		if (apk_repos == NULL)
+			apk_repos = "/etc/apk/repositories";
+		blob = apk_blob_from_file(apk_repos);
+		if (!APK_BLOB_IS_NULL(blob)) {
+			apk_blob_for_each_segment(blob, "\n",
+						  apk_db_add_repository, db);
+			free(blob.ptr);
+		}
 	}
 
 	blob = APK_BLOB_STR("etc:-etc/init.d");
@@ -654,14 +663,6 @@ int apk_db_open(struct apk_database *db, const char *root)
 	if (r != 0)
 		return r;
 
-	if (apk_repos == NULL)
-		apk_repos="/etc/apk/repositories";
-	blob = apk_blob_from_file(apk_repos);
-	if (!APK_BLOB_IS_NULL(blob)) {
-		apk_blob_for_each_segment(blob, "\n", apk_db_add_repository, db);
-		free(blob.ptr);
-	}
-
 	if (apk_repository != NULL)
 		apk_db_add_repository(db, APK_BLOB_STR(apk_repository));
 
@@ -775,25 +776,39 @@ struct apk_package *apk_db_pkg_add_file(struct apk_database *db, const char *fil
 	return info;
 }
 
+struct index_write_ctx {
+	struct apk_ostream *os;
+	int count;
+};
+
 static int write_index_entry(apk_hash_item item, void *ctx)
 {
-	struct apk_ostream *os = (struct apk_ostream *) ctx;
+	struct index_write_ctx *iwctx = (struct index_write_ctx *) ctx;
+	struct apk_package *pkg = (struct apk_package *) item;
 	char buf[1024];
 	apk_blob_t blob;
 
-	blob = apk_pkg_format_index_entry(item, sizeof(buf), buf);
+	if (pkg->repos != 0)
+		return 0;
+
+	blob = apk_pkg_format_index_entry(pkg, sizeof(buf), buf);
 	if (APK_BLOB_IS_NULL(blob))
 		return 0;
 
-	if (os->write(os, blob.ptr, blob.len) != blob.len)
+	if (iwctx->os->write(iwctx->os, blob.ptr, blob.len) != blob.len)
 		return -1;
 
+	iwctx->count++;
 	return 0;
 }
 
-void apk_db_index_write(struct apk_database *db, struct apk_ostream *os)
+int apk_db_index_write(struct apk_database *db, struct apk_ostream *os)
 {
-	apk_hash_foreach(&db->available.packages, write_index_entry, (void *) os);
+	struct index_write_ctx ctx = { os, 0 };
+
+	apk_hash_foreach(&db->available.packages, write_index_entry, &ctx);
+
+	return ctx.count;
 }
 
 int apk_db_add_repository(apk_database_t _db, apk_blob_t repository)

src/index.c

@@ -16,7 +16,6 @@
 #include "apk_database.h"
 
 struct counts {
-	int total;
 	int unsatisfied;
 };
 
@@ -34,7 +33,6 @@ static int warn_if_no_providers(apk_hash_item item, void *ctx)
 				    "not reporting the rest.");
 		}
 	}
-	counts->total++;
 
 	return 0;
 }
@@ -42,16 +40,16 @@ static int warn_if_no_providers(apk_hash_item item, void *ctx)
 static int index_main(void *ctx, int argc, char **argv)
 {
 	struct apk_database db;
-	struct counts counts = {0,0};
+	struct counts counts = {0};
 	struct apk_ostream *os;
-	int i;
+	int total, i;
 
 	apk_db_open(&db, NULL);
 	for (i = 0; i < argc; i++)
 		apk_db_pkg_add_file(&db, argv[i]);
 
 	os = apk_ostream_to_fd(STDOUT_FILENO);
-	apk_db_index_write(&db, os);
+	total = apk_db_index_write(&db, os);
 	os->close(os);
 
 	apk_hash_foreach(&db.available.names, warn_if_no_providers, &counts);
@@ -61,7 +59,7 @@ static int index_main(void *ctx, int argc, char **argv)
 		apk_warning("Total of %d unsatisfiable package "
 			    "names. Your repository maybe broken.",
 			    counts.unsatisfied);
-	apk_message("Index has %d packages", counts.total);
+	apk_message("Index has %d packages", total);
 
 	return 0;
 }