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Diffstat (limited to 'archive.c')
-rw-r--r--archive.c167
1 files changed, 114 insertions, 53 deletions
diff --git a/archive.c b/archive.c
index f59afda6ffd..cd083eaf9aa 100644
--- a/archive.c
+++ b/archive.c
@@ -14,16 +14,15 @@ static char const * const archive_usage[] = {
NULL
};
-#define USES_ZLIB_COMPRESSION 1
-
-static const struct archiver {
- const char *name;
- write_archive_fn_t write_archive;
- unsigned int flags;
-} archivers[] = {
- { "tar", write_tar_archive },
- { "zip", write_zip_archive, USES_ZLIB_COMPRESSION },
-};
+static const struct archiver **archivers;
+static int nr_archivers;
+static int alloc_archivers;
+
+void register_archiver(struct archiver *ar)
+{
+ ALLOC_GROW(archivers, nr_archivers + 1, alloc_archivers);
+ archivers[nr_archivers++] = ar;
+}
static void format_subst(const struct commit *commit,
const char *src, size_t len,
@@ -60,12 +59,15 @@ static void format_subst(const struct commit *commit,
free(to_free);
}
-static void *sha1_file_to_archive(const char *path, const unsigned char *sha1,
- unsigned int mode, enum object_type *type,
- unsigned long *sizep, const struct commit *commit)
+void *sha1_file_to_archive(const struct archiver_args *args,
+ const char *path, const unsigned char *sha1,
+ unsigned int mode, enum object_type *type,
+ unsigned long *sizep)
{
void *buffer;
+ const struct commit *commit = args->convert ? args->commit : NULL;
+ path += args->baselen;
buffer = read_sha1_file(sha1, type, sizep);
if (buffer && S_ISREG(mode)) {
struct strbuf buf = STRBUF_INIT;
@@ -110,12 +112,9 @@ static int write_archive_entry(const unsigned char *sha1, const char *base,
write_archive_entry_fn_t write_entry = c->write_entry;
struct git_attr_check check[2];
const char *path_without_prefix;
- int convert = 0;
int err;
- enum object_type type;
- unsigned long size;
- void *buffer;
+ args->convert = 0;
strbuf_reset(&path);
strbuf_grow(&path, PATH_MAX);
strbuf_add(&path, args->base, args->baselen);
@@ -124,31 +123,25 @@ static int write_archive_entry(const unsigned char *sha1, const char *base,
path_without_prefix = path.buf + args->baselen;
setup_archive_check(check);
- if (!git_checkattr(path_without_prefix, ARRAY_SIZE(check), check)) {
+ if (!git_check_attr(path_without_prefix, ARRAY_SIZE(check), check)) {
if (ATTR_TRUE(check[0].value))
return 0;
- convert = ATTR_TRUE(check[1].value);
+ args->convert = ATTR_TRUE(check[1].value);
}
if (S_ISDIR(mode) || S_ISGITLINK(mode)) {
strbuf_addch(&path, '/');
if (args->verbose)
fprintf(stderr, "%.*s\n", (int)path.len, path.buf);
- err = write_entry(args, sha1, path.buf, path.len, mode, NULL, 0);
+ err = write_entry(args, sha1, path.buf, path.len, mode);
if (err)
return err;
return (S_ISDIR(mode) ? READ_TREE_RECURSIVE : 0);
}
- buffer = sha1_file_to_archive(path_without_prefix, sha1, mode,
- &type, &size, convert ? args->commit : NULL);
- if (!buffer)
- return error("cannot read %s", sha1_to_hex(sha1));
if (args->verbose)
fprintf(stderr, "%.*s\n", (int)path.len, path.buf);
- err = write_entry(args, sha1, path.buf, path.len, mode, buffer, size);
- free(buffer);
- return err;
+ return write_entry(args, sha1, path.buf, path.len, mode);
}
int write_archive_entries(struct archiver_args *args,
@@ -157,6 +150,7 @@ int write_archive_entries(struct archiver_args *args,
struct archiver_context context;
struct unpack_trees_options opts;
struct tree_desc t;
+ struct pathspec pathspec;
int err;
if (args->baselen > 0 && args->base[args->baselen - 1] == '/') {
@@ -167,7 +161,7 @@ int write_archive_entries(struct archiver_args *args,
if (args->verbose)
fprintf(stderr, "%.*s\n", (int)len, args->base);
err = write_entry(args, args->tree->object.sha1, args->base,
- len, 040777, NULL, 0);
+ len, 040777);
if (err)
return err;
}
@@ -191,8 +185,10 @@ int write_archive_entries(struct archiver_args *args,
git_attr_set_direction(GIT_ATTR_INDEX, &the_index);
}
- err = read_tree_recursive(args->tree, "", 0, 0, args->pathspec,
+ init_pathspec(&pathspec, args->pathspec);
+ err = read_tree_recursive(args->tree, "", 0, 0, &pathspec,
write_archive_entry, &context);
+ free_pathspec(&pathspec);
if (err == READ_TREE_RECURSIVE)
err = 0;
return err;
@@ -205,9 +201,9 @@ static const struct archiver *lookup_archiver(const char *name)
if (!name)
return NULL;
- for (i = 0; i < ARRAY_SIZE(archivers); i++) {
- if (!strcmp(name, archivers[i].name))
- return &archivers[i];
+ for (i = 0; i < nr_archivers; i++) {
+ if (!strcmp(name, archivers[i]->name))
+ return archivers[i];
}
return NULL;
}
@@ -221,11 +217,14 @@ static int reject_entry(const unsigned char *sha1, const char *base,
static int path_exists(struct tree *tree, const char *path)
{
- const char *pathspec[] = { path, NULL };
-
- if (read_tree_recursive(tree, "", 0, 0, pathspec, reject_entry, NULL))
- return 1;
- return 0;
+ const char *paths[] = { path, NULL };
+ struct pathspec pathspec;
+ int ret;
+
+ init_pathspec(&pathspec, paths);
+ ret = read_tree_recursive(tree, "", 0, 0, &pathspec, reject_entry, NULL);
+ free_pathspec(&pathspec);
+ return ret != 0;
}
static void parse_pathspec_arg(const char **pathspec,
@@ -242,7 +241,8 @@ static void parse_pathspec_arg(const char **pathspec,
}
static void parse_treeish_arg(const char **argv,
- struct archiver_args *ar_args, const char *prefix)
+ struct archiver_args *ar_args, const char *prefix,
+ int remote)
{
const char *name = argv[0];
const unsigned char *commit_sha1;
@@ -251,6 +251,24 @@ static void parse_treeish_arg(const char **argv,
const struct commit *commit;
unsigned char sha1[20];
+ /* Remotes are only allowed to fetch actual refs */
+ if (remote) {
+ char *ref = NULL;
+ const char *refname, *colon = NULL;
+
+ colon = strchr(name, ':');
+ if (colon)
+ refname = xstrndup(name, colon - name);
+ else
+ refname = name;
+
+ if (!dwim_ref(refname, strlen(refname), sha1, &ref))
+ die("no such ref: %s", refname);
+ if (refname != name)
+ free((void *)refname);
+ free(ref);
+ }
+
if (get_sha1(name, sha1))
die("Not a valid object name");
@@ -293,9 +311,10 @@ static void parse_treeish_arg(const char **argv,
PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_HIDDEN, NULL, (p) }
static int parse_archive_args(int argc, const char **argv,
- const struct archiver **ar, struct archiver_args *args)
+ const struct archiver **ar, struct archiver_args *args,
+ const char *name_hint, int is_remote)
{
- const char *format = "tar";
+ const char *format = NULL;
const char *base = NULL;
const char *remote = NULL;
const char *exec = NULL;
@@ -312,9 +331,9 @@ static int parse_archive_args(int argc, const char **argv,
"prepend prefix to each pathname in the archive"),
OPT_STRING('o', "output", &output, "file",
"write the archive to this file"),
- OPT_BOOLEAN(0, "worktree-attributes", &worktree_attributes,
+ OPT_BOOL(0, "worktree-attributes", &worktree_attributes,
"read .gitattributes in working directory"),
- OPT__VERBOSE(&verbose),
+ OPT__VERBOSE(&verbose, "report archived files on stderr"),
OPT__COMPR('0', &compression_level, "store only", 0),
OPT__COMPR('1', &compression_level, "compress faster", 1),
OPT__COMPR_HIDDEN('2', &compression_level, 2),
@@ -326,7 +345,7 @@ static int parse_archive_args(int argc, const char **argv,
OPT__COMPR_HIDDEN('8', &compression_level, 8),
OPT__COMPR('9', &compression_level, "compress better", 9),
OPT_GROUP(""),
- OPT_BOOLEAN('l', "list", &list,
+ OPT_BOOL('l', "list", &list,
"list supported archive formats"),
OPT_GROUP(""),
OPT_STRING(0, "remote", &remote, "repo",
@@ -349,21 +368,27 @@ static int parse_archive_args(int argc, const char **argv,
base = "";
if (list) {
- for (i = 0; i < ARRAY_SIZE(archivers); i++)
- printf("%s\n", archivers[i].name);
+ for (i = 0; i < nr_archivers; i++)
+ if (!is_remote || archivers[i]->flags & ARCHIVER_REMOTE)
+ printf("%s\n", archivers[i]->name);
exit(0);
}
+ if (!format && name_hint)
+ format = archive_format_from_filename(name_hint);
+ if (!format)
+ format = "tar";
+
/* We need at least one parameter -- tree-ish */
if (argc < 1)
usage_with_options(archive_usage, opts);
*ar = lookup_archiver(format);
- if (!*ar)
+ if (!*ar || (is_remote && !((*ar)->flags & ARCHIVER_REMOTE)))
die("Unknown archive format '%s'", format);
args->compression_level = Z_DEFAULT_COMPRESSION;
if (compression_level != -1) {
- if ((*ar)->flags & USES_ZLIB_COMPRESSION)
+ if ((*ar)->flags & ARCHIVER_WANT_COMPRESSION_LEVELS)
args->compression_level = compression_level;
else {
die("Argument not supported for format '%s': -%d",
@@ -379,19 +404,55 @@ static int parse_archive_args(int argc, const char **argv,
}
int write_archive(int argc, const char **argv, const char *prefix,
- int setup_prefix)
+ int setup_prefix, const char *name_hint, int remote)
{
+ int nongit = 0;
const struct archiver *ar = NULL;
struct archiver_args args;
- argc = parse_archive_args(argc, argv, &ar, &args);
if (setup_prefix && prefix == NULL)
- prefix = setup_git_directory();
+ prefix = setup_git_directory_gently(&nongit);
+
+ git_config(git_default_config, NULL);
+ init_tar_archiver();
+ init_zip_archiver();
+
+ argc = parse_archive_args(argc, argv, &ar, &args, name_hint, remote);
+ if (nongit) {
+ /*
+ * We know this will die() with an error, so we could just
+ * die ourselves; but its error message will be more specific
+ * than what we could write here.
+ */
+ setup_git_directory();
+ }
- parse_treeish_arg(argv, &args, prefix);
+ parse_treeish_arg(argv, &args, prefix, remote);
parse_pathspec_arg(argv + 1, &args);
- git_config(git_default_config, NULL);
+ return ar->write_archive(ar, &args);
+}
+
+static int match_extension(const char *filename, const char *ext)
+{
+ int prefixlen = strlen(filename) - strlen(ext);
+
+ /*
+ * We need 1 character for the '.', and 1 character to ensure that the
+ * prefix is non-empty (k.e., we don't match .tar.gz with no actual
+ * filename).
+ */
+ if (prefixlen < 2 || filename[prefixlen-1] != '.')
+ return 0;
+ return !strcmp(filename + prefixlen, ext);
+}
+
+const char *archive_format_from_filename(const char *filename)
+{
+ int i;
- return ar->write_archive(&args);
+ for (i = 0; i < nr_archivers; i++)
+ if (match_extension(filename, archivers[i]->name))
+ return archivers[i]->name;
+ return NULL;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-07 02:13:38 +0300