xbps-repo: if fetching info from remote repo for the 'show' and 'show-files'

targets and the binary package exists in cachedir, use it.

--HG--
extra : convert_revision : xtraeme%40gmail.com-20091128022129-y6y2tr0vtvy2w745

bin/xbps-bin/install.c

@@ -121,7 +121,7 @@ download_package_list(prop_object_iterator_t iter)
 		    "filename-sha256", &sha256))
 			return errno;
 
-		lbinfile = xbps_get_binpkg_local_path(obj);
+		lbinfile = xbps_get_binpkg_local_path(obj, repoloc);
 		if (lbinfile == NULL)
 			return errno;
 

bin/xbps-repo/xbps-repo.8.txt

@@ -66,8 +66,8 @@ Please note that all targets are *case insensitive*.
 	Shows information about binary package 'pkgname'. This will print
 	the size it takes in filesystem, description, maintainer, architecture
 	and other information. The first repository in the pool wins. *NOTE:
-	if a remote repository is the winner it will have to fetch some info
-	from it.*
+	if a remote repository is the winner and binary package is not available
+	in cachedir, it will fetch remotely and __on-the-fly__ the info*.
 
 *show-deps 'pkgname'*::
 	Shows run time dependencies for binary package 'pkgname'. The first
@@ -75,8 +75,10 @@ Please note that all targets are *case insensitive*.
 
 *show-files 'pkgname'*::
 	Shows the file list for a binary package 'pkgname' by searching it
-	in repository pool. *NOTE: if a remote repository is the winner it will
-	have to fetch some info from it.*
+	in repository pool. The first repository in the pool wins. *NOTE:
+	if a remote repository is the winner and binary package is not
+	available in `cachedir`, it will fetch remotely and __on-the-fly__
+	the info*.
 
 *sync*::
 	Syncs the package index file for all registered remote repositories.

include/xbps_api.h

@@ -238,7 +238,8 @@ int SYMEXPORT		xbps_check_file_hash(const char *, const char *);
 int SYMEXPORT		xbps_check_is_installed_pkg(const char *);
 bool SYMEXPORT		xbps_check_is_installed_pkgname(const char *);
 bool SYMEXPORT		xbps_check_is_repo_string_remote(const char *);
-char SYMEXPORT		*xbps_get_binpkg_local_path(prop_dictionary_t);
+char SYMEXPORT
+	*xbps_get_binpkg_local_path(prop_dictionary_t, const char *);
 char SYMEXPORT		*xbps_get_pkg_index_plist(const char *);
 char SYMEXPORT		*xbps_get_pkg_name(const char *);
 char SYMEXPORT		*xbps_get_pkgdep_name(const char *);

lib/repository_plist.c

@@ -136,10 +136,30 @@ open_archive(const char *url)
 	return a;
 }
 
+static char *
+binpkg_in_cachedir(prop_dictionary_t d, const char *uri)
+{
+	char *lbinfile;
+
+	lbinfile = xbps_get_binpkg_local_path(d, uri);
+	if (lbinfile == NULL)
+		return NULL;
+
+	if (access(lbinfile, R_OK) == 0)
+		return lbinfile;
+
+	return NULL;
+}
+
 char SYMEXPORT *
 xbps_get_path_from_pkg_dict_repo(prop_dictionary_t d, const char *uri)
 {
 	const char *arch, *filen;
+	char *path = NULL;
+
+	path = binpkg_in_cachedir(d, uri);
+	if (path)
+		return path;
 
 	if (!prop_dictionary_get_cstring_nocopy(d, "architecture", &arch))
 		return NULL;

lib/unpack.c

@@ -39,7 +39,7 @@ static void set_extract_flags(int *);
 int SYMEXPORT
 xbps_unpack_binary_pkg(prop_dictionary_t pkg, bool essential)
 {
-	const char *pkgname;
+	const char *pkgname, *repoloc;
 	struct archive *ar = NULL;
 	char *binfile = NULL;
 	int pkg_fd, rv = 0;
@@ -48,8 +48,9 @@ xbps_unpack_binary_pkg(prop_dictionary_t pkg, bool essential)
 
 	if (!prop_dictionary_get_cstring_nocopy(pkg, "pkgname", &pkgname))
 		return errno;
-
-	binfile = xbps_get_binpkg_local_path(pkg);
+	if (!prop_dictionary_get_cstring_nocopy(pkg, "repository", &repoloc))
+		return errno;
+	binfile = xbps_get_binpkg_local_path(pkg, repoloc);
 	if (binfile == NULL)
 		return EINVAL;
 

lib/util.c

@@ -305,12 +305,10 @@ xbps_get_pkg_index_plist(const char *uri)
 }
 
 char SYMEXPORT *
-xbps_get_binpkg_local_path(prop_dictionary_t pkg)
+xbps_get_binpkg_local_path(prop_dictionary_t pkg, const char *repoloc)
 {
-	const char *repoloc, *filen, *arch, *cdir;
+	const char *filen, *arch, *cdir;
 
-	if (!prop_dictionary_get_cstring_nocopy(pkg, "repository", &repoloc))
-		return NULL;
 	if (!prop_dictionary_get_cstring_nocopy(pkg, "filename", &filen))
 		return NULL;
 	if (!prop_dictionary_get_cstring_nocopy(pkg, "architecture", &arch))