API/ABI break for June 2011.

Rename some functions to reflect its description a bit better.

--HG--
rename : lib/repository_plist.c => lib/plist_fetch.c

lib/plist_fetch.c

@@ -0,0 +1,194 @@
+/*-
+ * Copyright (c) 2009-2011 Juan Romero Pardines.
+ * Copyright (c) 2008, 2009 Joerg Sonnenberger <joerg (at) NetBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *-
+ * From: $NetBSD: pkg_io.c,v 1.9 2009/08/16 21:10:15 joerg Exp $
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#include <xbps_api.h>
+#include "xbps_api_impl.h"
+#include "fetch.h"
+
+/**
+ * @file lib/plist_fetch.c
+ * @brief Package URL metadata files handling
+ * @defgroup plist_fetch Package URL metadata files handling
+ */
+
+struct fetch_archive {
+	struct url *url;
+	struct fetchIO *fetch;
+	char buffer[32768];
+};
+
+static int
+fetch_archive_open(struct archive *a, void *client_data)
+{
+	struct fetch_archive *f = client_data;
+
+	(void)a;
+
+	f->fetch = fetchGet(f->url, NULL);
+	if (f->fetch == NULL)
+		return ENOENT;
+
+	return 0;
+}
+
+static ssize_t
+fetch_archive_read(struct archive *a, void *client_data, const void **buf)
+{
+	struct fetch_archive *f = client_data;
+
+	(void)a;
+	*buf = f->buffer;
+
+	return fetchIO_read(f->fetch, f->buffer, sizeof(f->buffer));
+}
+
+static int
+fetch_archive_close(struct archive *a, void *client_data)
+{
+	struct fetch_archive *f = client_data;
+
+	(void)a;
+
+	if (f->fetch != NULL)
+		fetchIO_close(f->fetch);
+	free(f);
+
+	return 0;
+}
+
+static struct archive *
+open_archive_by_url(struct url *url)
+{
+	struct fetch_archive *f;
+	struct archive *a;
+
+	f = malloc(sizeof(struct fetch_archive));
+	if (f == NULL)
+		return NULL;
+
+	f->url = url;
+	if ((a = archive_read_new()) == NULL) {
+		free(f);
+		return NULL;
+	}
+	archive_read_support_compression_all(a);
+	archive_read_support_format_tar(a);
+
+	if (archive_read_open(a, f, fetch_archive_open, fetch_archive_read,
+	    fetch_archive_close)) {
+		archive_read_finish(a);
+		return NULL;
+	}
+
+	return a;
+}
+
+static struct archive *
+open_archive(const char *url)
+{
+	struct url *u;
+	struct archive *a;
+
+	if (!xbps_check_is_repository_uri_remote(url)) {
+		if ((a = archive_read_new()) == NULL)
+			return NULL;
+
+		archive_read_support_compression_all(a);
+		archive_read_support_format_tar(a);
+
+		if (archive_read_open_filename(a, url,
+		    ARCHIVE_READ_BLOCKSIZE)) {
+			archive_read_close(a);
+			return NULL;
+		}
+		return a;
+	}
+	
+	if ((u = fetchParseURL(url)) == NULL)
+		return NULL;
+
+	a = open_archive_by_url(u);
+	fetchFreeURL(u);
+
+	return a;
+}
+
+prop_dictionary_t
+xbps_dictionary_metadata_plist_by_url(const char *url, const char *plistf)
+{
+	prop_dictionary_t plistd = NULL;
+	struct archive *a;
+	struct archive_entry *entry;
+	const char *curpath, *comptype;
+	int i = 0;
+
+	assert(url != NULL);
+	assert(plistf != NULL);
+
+	if ((a = open_archive(url)) == NULL)
+		return NULL;
+
+	/*
+	 * Save compression type string for future use.
+	 */
+	comptype = archive_compression_name(a);
+
+	while ((archive_read_next_header(a, &entry)) == ARCHIVE_OK) {
+		curpath = archive_entry_pathname(entry);
+		if (strstr(curpath, plistf) == 0) {
+			archive_read_data_skip(a);
+			if (i >= 3) {
+				/*
+				 * Archive does not contain required
+				 * plist file, discard it completely.
+				 */
+				errno = ENOENT;
+				break;
+			}
+			i++;
+			continue;
+		}
+		plistd = xbps_read_dict_from_archive_entry(a, entry);
+		if (plistd == NULL) {
+			errno = EINVAL;
+			break;
+		}
+		prop_dictionary_set_cstring_nocopy(plistd,
+		    "archive-compression-type", comptype);
+
+		break;
+	}
+	archive_read_finish(a);
+
+	return plistd;
+}