lib/repo: add xbps_repo_remove and use it in xbps_rpool_foreach

https://github.com/void-linux/xbps/issues/3

include/xbps.h.in

@@ -48,7 +48,7 @@
  *
  * This header documents the full API for the XBPS Library.
  */
-#define XBPS_API_VERSION	"20190614"
+#define XBPS_API_VERSION	"20190615"
 
 #ifndef XBPS_VERSION
  #define XBPS_VERSION		"UNSET"
@@ -1476,6 +1476,16 @@ xbps_dictionary_t xbps_rpool_get_pkg_plist(struct xbps_handle *xhp,
  */
 bool xbps_repo_store(struct xbps_handle *xhp, const char *url);
 
+/**
+ * Removes repository \a url from the repository pool.
+ *
+ * @param[in] xhp Pointer to the xbps_handle struct.
+ * @param[in] uri Repository URI to remove.
+ *
+ * @return True on success, false otherwise.
+ */
+bool xbps_repo_remove(struct xbps_handle *xhp, const char *url);
+
 /**
  * Creates a lock for a local repository to obtain exclusive access (write).
  *

lib/repo.c

@@ -294,6 +294,29 @@ xbps_repo_store(struct xbps_handle *xhp, const char *repo)
 	return false;
 }
 
+bool
+xbps_repo_remove(struct xbps_handle *xhp, const char *repo)
+{
+	char *url;
+	bool rv = false;
+
+	assert(xhp);
+	assert(repo);
+
+	if (xhp->repositories == NULL)
+		return false;
+
+	url = strdup(repo);
+	if (xbps_remove_string_from_array(xhp->repositories, repo)) {
+		if (url)
+			xbps_dbg_printf(xhp, "[repo] `%s' removed\n", url);
+		rv = true;
+	}
+	free(url);
+
+	return rv;
+}
+
 struct xbps_repo *
 xbps_repo_stage_open(struct xbps_handle *xhp, const char *url)
 {

lib/rpool.c

@@ -148,8 +148,10 @@ xbps_rpool_foreach(struct xbps_handle *xhp,
 		xbps_array_get_cstring_nocopy(xhp->repositories, i, &repouri);
 		if ((repo = xbps_rpool_get_repo(repouri)) == NULL) {
 			repo = xbps_repo_open(xhp, repouri);
-			if (!repo)
+			if (!repo) {
+				xbps_repo_remove(xhp, repouri);
 				continue;
+			}
 			SIMPLEQ_INSERT_TAIL(&rpool_queue, repo, entries);
 			xbps_dbg_printf(xhp, "[rpool] `%s' registered.\n", repouri);
 		}