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-rw-r--r--archive.c325
1 files changed, 255 insertions, 70 deletions
diff --git a/archive.c b/archive.c
index 55b2732..96057ed 100644
--- a/archive.c
+++ b/archive.c
@@ -5,25 +5,26 @@
#include "archive.h"
#include "parse-options.h"
#include "unpack-trees.h"
+#include "dir.h"
static char const * const archive_usage[] = {
- "git archive [options] <tree-ish> [path...]",
- "git archive --list",
- "git archive --remote <repo> [--exec <cmd>] [options] <tree-ish> [path...]",
- "git archive --remote <repo> [--exec <cmd>] --list",
+ N_("git archive [<options>] <tree-ish> [<path>...]"),
+ N_("git archive --list"),
+ N_("git archive --remote <repo> [--exec <cmd>] [<options>] <tree-ish> [<path>...]"),
+ N_("git archive --remote <repo> [--exec <cmd>] --list"),
NULL
};
-#define USES_ZLIB_COMPRESSION 1
+static const struct archiver **archivers;
+static int nr_archivers;
+static int alloc_archivers;
+static int remote_allow_unreachable;
-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 },
-};
+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,
@@ -33,6 +34,7 @@ static void format_subst(const struct commit *commit,
struct strbuf fmt = STRBUF_INIT;
struct pretty_print_context ctx = {0};
ctx.date_mode = DATE_NORMAL;
+ ctx.abbrev = DEFAULT_ABBREV;
if (src == buf->buf)
to_free = strbuf_detach(buf, NULL);
@@ -59,12 +61,15 @@ 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;
@@ -87,16 +92,26 @@ static void setup_archive_check(struct git_attr_check *check)
static struct git_attr *attr_export_subst;
if (!attr_export_ignore) {
- attr_export_ignore = git_attr("export-ignore", 13);
- attr_export_subst = git_attr("export-subst", 12);
+ attr_export_ignore = git_attr("export-ignore");
+ attr_export_subst = git_attr("export-subst");
}
check[0].attr = attr_export_ignore;
check[1].attr = attr_export_subst;
}
+struct directory {
+ struct directory *up;
+ unsigned char sha1[20];
+ int baselen, len;
+ unsigned mode;
+ int stage;
+ char path[FLEX_ARRAY];
+};
+
struct archiver_context {
struct archiver_args *args;
write_archive_entry_fn_t write_entry;
+ struct directory *bottom;
};
static int write_archive_entry(const unsigned char *sha1, const char *base,
@@ -109,45 +124,104 @@ 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);
strbuf_add(&path, base, baselen);
strbuf_addstr(&path, filename);
+ if (S_ISDIR(mode) || S_ISGITLINK(mode))
+ strbuf_addch(&path, '/');
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);
+}
+
+static int write_archive_entry_buf(const unsigned char *sha1, struct strbuf *base,
+ const char *filename, unsigned mode, int stage,
+ void *context)
+{
+ return write_archive_entry(sha1, base->buf, base->len,
+ filename, mode, stage, context);
+}
+
+static void queue_directory(const unsigned char *sha1,
+ struct strbuf *base, const char *filename,
+ unsigned mode, int stage, struct archiver_context *c)
+{
+ struct directory *d;
+ d = xmallocz(sizeof(*d) + base->len + 1 + strlen(filename));
+ d->up = c->bottom;
+ d->baselen = base->len;
+ d->mode = mode;
+ d->stage = stage;
+ c->bottom = d;
+ d->len = sprintf(d->path, "%.*s%s/", (int)base->len, base->buf, filename);
+ hashcpy(d->sha1, sha1);
+}
+
+static int write_directory(struct archiver_context *c)
+{
+ struct directory *d = c->bottom;
+ int ret;
+
+ if (!d)
+ return 0;
+ c->bottom = d->up;
+ d->path[d->len - 1] = '\0'; /* no trailing slash */
+ ret =
+ write_directory(c) ||
+ write_archive_entry(d->sha1, d->path, d->baselen,
+ d->path + d->baselen, d->mode,
+ d->stage, c) != READ_TREE_RECURSIVE;
+ free(d);
+ return ret ? -1 : 0;
+}
+
+static int queue_or_write_archive_entry(const unsigned char *sha1,
+ struct strbuf *base, const char *filename,
+ unsigned mode, int stage, void *context)
+{
+ struct archiver_context *c = context;
+
+ while (c->bottom &&
+ !(base->len >= c->bottom->len &&
+ !strncmp(base->buf, c->bottom->path, c->bottom->len))) {
+ struct directory *next = c->bottom->up;
+ free(c->bottom);
+ c->bottom = next;
+ }
+
+ if (S_ISDIR(mode)) {
+ queue_directory(sha1, base, filename,
+ mode, stage, c);
+ return READ_TREE_RECURSIVE;
+ }
+
+ if (write_directory(c))
+ return -1;
+ return write_archive_entry(sha1, base->buf, base->len, filename, mode,
+ stage, context);
}
int write_archive_entries(struct archiver_args *args,
@@ -166,11 +240,12 @@ 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;
}
+ memset(&context, 0, sizeof(context));
context.args = args;
context.write_entry = write_entry;
@@ -190,10 +265,18 @@ 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,
- write_archive_entry, &context);
+ err = read_tree_recursive(args->tree, "", 0, 0, &args->pathspec,
+ args->pathspec.has_wildcard ?
+ queue_or_write_archive_entry :
+ write_archive_entry_buf,
+ &context);
if (err == READ_TREE_RECURSIVE)
err = 0;
+ while (context.bottom) {
+ struct directory *next = context.bottom->up;
+ free(context.bottom);
+ context.bottom = next;
+ }
return err;
}
@@ -204,21 +287,67 @@ 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;
}
+static int reject_entry(const unsigned char *sha1, struct strbuf *base,
+ const char *filename, unsigned mode,
+ int stage, void *context)
+{
+ int ret = -1;
+ if (S_ISDIR(mode)) {
+ struct strbuf sb = STRBUF_INIT;
+ strbuf_addbuf(&sb, base);
+ strbuf_addstr(&sb, filename);
+ if (!match_pathspec(context, sb.buf, sb.len, 0, NULL, 1))
+ ret = READ_TREE_RECURSIVE;
+ strbuf_release(&sb);
+ }
+ return ret;
+}
+
+static int path_exists(struct tree *tree, const char *path)
+{
+ const char *paths[] = { path, NULL };
+ struct pathspec pathspec;
+ int ret;
+
+ parse_pathspec(&pathspec, 0, 0, "", paths);
+ pathspec.recursive = 1;
+ ret = read_tree_recursive(tree, "", 0, 0, &pathspec,
+ reject_entry, &pathspec);
+ free_pathspec(&pathspec);
+ return ret != 0;
+}
+
static void parse_pathspec_arg(const char **pathspec,
struct archiver_args *ar_args)
{
- ar_args->pathspec = get_pathspec("", pathspec);
+ /*
+ * must be consistent with parse_pathspec in path_exists()
+ * Also if pathspec patterns are dependent, we're in big
+ * trouble as we test each one separately
+ */
+ parse_pathspec(&ar_args->pathspec, 0,
+ PATHSPEC_PREFER_FULL,
+ "", pathspec);
+ ar_args->pathspec.recursive = 1;
+ if (pathspec) {
+ while (*pathspec) {
+ if (**pathspec && !path_exists(ar_args->tree, *pathspec))
+ die(_("pathspec '%s' did not match any files"), *pathspec);
+ 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;
@@ -227,6 +356,17 @@ 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 && !remote_allow_unreachable) {
+ char *ref = NULL;
+ const char *colon = strchrnul(name, ':');
+ int refnamelen = colon - name;
+
+ if (!dwim_ref(name, refnamelen, sha1, &ref))
+ die("no such ref: %.*s", refnamelen, name);
+ free(ref);
+ }
+
if (get_sha1(name, sha1))
die("Not a valid object name");
@@ -269,9 +409,10 @@ 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;
@@ -283,16 +424,16 @@ static int parse_archive_args(int argc, const char **argv,
int worktree_attributes = 0;
struct option opts[] = {
OPT_GROUP(""),
- OPT_STRING(0, "format", &format, "fmt", "archive format"),
- OPT_STRING(0, "prefix", &base, "prefix",
- "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,
- "read .gitattributes in working directory"),
- OPT__VERBOSE(&verbose),
- OPT__COMPR('0', &compression_level, "store only", 0),
- OPT__COMPR('1', &compression_level, "compress faster", 1),
+ OPT_STRING(0, "format", &format, N_("fmt"), N_("archive format")),
+ OPT_STRING(0, "prefix", &base, N_("prefix"),
+ N_("prepend prefix to each pathname in the archive")),
+ OPT_STRING('o', "output", &output, N_("file"),
+ N_("write the archive to this file")),
+ OPT_BOOL(0, "worktree-attributes", &worktree_attributes,
+ N_("read .gitattributes in working directory")),
+ OPT__VERBOSE(&verbose, N_("report archived files on stderr")),
+ OPT__COMPR('0', &compression_level, N_("store only"), 0),
+ OPT__COMPR('1', &compression_level, N_("compress faster"), 1),
OPT__COMPR_HIDDEN('2', &compression_level, 2),
OPT__COMPR_HIDDEN('3', &compression_level, 3),
OPT__COMPR_HIDDEN('4', &compression_level, 4),
@@ -300,15 +441,15 @@ static int parse_archive_args(int argc, const char **argv,
OPT__COMPR_HIDDEN('6', &compression_level, 6),
OPT__COMPR_HIDDEN('7', &compression_level, 7),
OPT__COMPR_HIDDEN('8', &compression_level, 8),
- OPT__COMPR('9', &compression_level, "compress better", 9),
+ OPT__COMPR('9', &compression_level, N_("compress better"), 9),
OPT_GROUP(""),
- OPT_BOOLEAN('l', "list", &list,
- "list supported archive formats"),
+ OPT_BOOL('l', "list", &list,
+ N_("list supported archive formats")),
OPT_GROUP(""),
- OPT_STRING(0, "remote", &remote, "repo",
- "retrieve the archive from remote repository <repo>"),
- OPT_STRING(0, "exec", &exec, "cmd",
- "path to the remote git-upload-archive command"),
+ OPT_STRING(0, "remote", &remote, N_("repo"),
+ N_("retrieve the archive from remote repository <repo>")),
+ OPT_STRING(0, "exec", &exec, N_("command"),
+ N_("path to the remote git-upload-archive command")),
OPT_END()
};
@@ -325,21 +466,27 @@ 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",
@@ -355,19 +502,57 @@ 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_get_bool("uploadarchive.allowunreachable", &remote_allow_unreachable);
+ 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);
- return ar->write_archive(&args);
+ /*
+ * 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;
+
+ for (i = 0; i < nr_archivers; i++)
+ if (match_extension(filename, archivers[i]->name))
+ return archivers[i]->name;
+ return NULL;
}
generated by cgit v0.10.2-6-g49f6 at 2024-05-13 09:17:51 (GMT)