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-rw-r--r--Documentation/git-archive.txt33
-rw-r--r--archive-tar.c135
-rw-r--r--archive-zip.c14
-rw-r--r--archive.c90
-rw-r--r--archive.h23
-rw-r--r--builtin/archive.c51
-rw-r--r--builtin/upload-archive.c2
-rwxr-xr-xt/t5000-tar-tree.sh100
8 files changed, 375 insertions, 73 deletions
diff --git a/Documentation/git-archive.txt b/Documentation/git-archive.txt
index 9c750e2..1320c87 100644
--- a/Documentation/git-archive.txt
+++ b/Documentation/git-archive.txt
@@ -101,6 +101,25 @@ tar.umask::
details. If `--remote` is used then only the configuration of
the remote repository takes effect.
+tar.<format>.command::
+ This variable specifies a shell command through which the tar
+ output generated by `git archive` should be piped. The command
+ is executed using the shell with the generated tar file on its
+ standard input, and should produce the final output on its
+ standard output. Any compression-level options will be passed
+ to the command (e.g., "-9"). An output file with the same
+ extension as `<format>` will be use this format if no other
+ format is given.
++
+The "tar.gz" and "tgz" formats are defined automatically and default to
+`gzip -cn`. You may override them with custom commands.
+
+tar.<format>.remote::
+ If true, enable `<format>` for use by remote clients via
+ linkgit:git-upload-archive[1]. Defaults to false for
+ user-defined formats, but true for the "tar.gz" and "tgz"
+ formats.
+
ATTRIBUTES
----------
@@ -133,6 +152,14 @@ git archive --format=tar --prefix=git-1.4.0/ v1.4.0 | gzip >git-1.4.0.tar.gz::
Create a compressed tarball for v1.4.0 release.
+git archive --format=tar.gz --prefix=git-1.4.0/ v1.4.0 >git-1.4.0.tar.gz::
+
+ Same as above, but using the builtin tar.gz handling.
+
+git archive --prefix=git-1.4.0/ -o git-1.4.0.tar.gz v1.4.0::
+
+ Same as above, but the format is inferred from the output file.
+
git archive --format=tar --prefix=git-1.4.0/ v1.4.0{caret}\{tree\} | gzip >git-1.4.0.tar.gz::
Create a compressed tarball for v1.4.0 release, but without a
@@ -149,6 +176,12 @@ git archive -o latest.zip HEAD::
commit on the current branch. Note that the output format is
inferred by the extension of the output file.
+git config tar.tar.xz.command "xz -c"::
+
+ Configure a "tar.xz" format for making LZMA-compressed tarfiles.
+ You can use it specifying `--format=tar.xz`, or by creating an
+ output file like `-o foo.tar.xz`.
+
SEE ALSO
--------
diff --git a/archive-tar.c b/archive-tar.c
index cee06ce..20af005 100644
--- a/archive-tar.c
+++ b/archive-tar.c
@@ -4,6 +4,7 @@
#include "cache.h"
#include "tar.h"
#include "archive.h"
+#include "run-command.h"
#define RECORDSIZE (512)
#define BLOCKSIZE (RECORDSIZE * 20)
@@ -13,6 +14,9 @@ static unsigned long offset;
static int tar_umask = 002;
+static int write_tar_filter_archive(const struct archiver *ar,
+ struct archiver_args *args);
+
/* writes out the whole block, but only if it is full */
static void write_if_needed(void)
{
@@ -220,6 +224,67 @@ static int write_global_extended_header(struct archiver_args *args)
return err;
}
+static struct archiver **tar_filters;
+static int nr_tar_filters;
+static int alloc_tar_filters;
+
+static struct archiver *find_tar_filter(const char *name, int len)
+{
+ int i;
+ for (i = 0; i < nr_tar_filters; i++) {
+ struct archiver *ar = tar_filters[i];
+ if (!strncmp(ar->name, name, len) && !ar->name[len])
+ return ar;
+ }
+ return NULL;
+}
+
+static int tar_filter_config(const char *var, const char *value, void *data)
+{
+ struct archiver *ar;
+ const char *dot;
+ const char *name;
+ const char *type;
+ int namelen;
+
+ if (prefixcmp(var, "tar."))
+ return 0;
+ dot = strrchr(var, '.');
+ if (dot == var + 9)
+ return 0;
+
+ name = var + 4;
+ namelen = dot - name;
+ type = dot + 1;
+
+ ar = find_tar_filter(name, namelen);
+ if (!ar) {
+ ar = xcalloc(1, sizeof(*ar));
+ ar->name = xmemdupz(name, namelen);
+ ar->write_archive = write_tar_filter_archive;
+ ar->flags = ARCHIVER_WANT_COMPRESSION_LEVELS;
+ ALLOC_GROW(tar_filters, nr_tar_filters + 1, alloc_tar_filters);
+ tar_filters[nr_tar_filters++] = ar;
+ }
+
+ if (!strcmp(type, "command")) {
+ if (!value)
+ return config_error_nonbool(var);
+ free(ar->data);
+ ar->data = xstrdup(value);
+ return 0;
+ }
+ if (!strcmp(type, "remote")) {
+ if (git_config_bool(var, value))
+ ar->flags |= ARCHIVER_REMOTE;
+ else
+ ar->flags &= ~ARCHIVER_REMOTE;
+ return 0;
+ }
+
+ return 0;
+}
+
static int git_tar_config(const char *var, const char *value, void *cb)
{
if (!strcmp(var, "tar.umask")) {
@@ -231,15 +296,15 @@ static int git_tar_config(const char *var, const char *value, void *cb)
}
return 0;
}
- return git_default_config(var, value, cb);
+
+ return tar_filter_config(var, value, cb);
}
-int write_tar_archive(struct archiver_args *args)
+static int write_tar_archive(const struct archiver *ar,
+ struct archiver_args *args)
{
int err = 0;
- git_config(git_tar_config, NULL);
-
if (args->commit_sha1)
err = write_global_extended_header(args);
if (!err)
@@ -248,3 +313,65 @@ int write_tar_archive(struct archiver_args *args)
write_trailer();
return err;
}
+
+static int write_tar_filter_archive(const struct archiver *ar,
+ struct archiver_args *args)
+{
+ struct strbuf cmd = STRBUF_INIT;
+ struct child_process filter;
+ const char *argv[2];
+ int r;
+
+ if (!ar->data)
+ die("BUG: tar-filter archiver called with no filter defined");
+
+ strbuf_addstr(&cmd, ar->data);
+ if (args->compression_level >= 0)
+ strbuf_addf(&cmd, " -%d", args->compression_level);
+
+ memset(&filter, 0, sizeof(filter));
+ argv[0] = cmd.buf;
+ argv[1] = NULL;
+ filter.argv = argv;
+ filter.use_shell = 1;
+ filter.in = -1;
+
+ if (start_command(&filter) < 0)
+ die_errno("unable to start '%s' filter", argv[0]);
+ close(1);
+ if (dup2(filter.in, 1) < 0)
+ die_errno("unable to redirect descriptor");
+ close(filter.in);
+
+ r = write_tar_archive(ar, args);
+
+ close(1);
+ if (finish_command(&filter) != 0)
+ die("'%s' filter reported error", argv[0]);
+
+ strbuf_release(&cmd);
+ return r;
+}
+
+static struct archiver tar_archiver = {
+ "tar",
+ write_tar_archive,
+ ARCHIVER_REMOTE
+};
+
+void init_tar_archiver(void)
+{
+ int i;
+ register_archiver(&tar_archiver);
+
+ tar_filter_config("tar.tgz.command", "gzip -cn", NULL);
+ tar_filter_config("tar.tgz.remote", "true", NULL);
+ tar_filter_config("tar.tar.gz.command", "gzip -cn", NULL);
+ tar_filter_config("tar.tar.gz.remote", "true", NULL);
+ git_config(git_tar_config, NULL);
+ for (i = 0; i < nr_tar_filters; i++) {
+ /* omit any filters that never had a command configured */
+ if (tar_filters[i]->data)
+ register_archiver(tar_filters[i]);
+ }
+}
diff --git a/archive-zip.c b/archive-zip.c
index 72d55a5..02d1f37 100644
--- a/archive-zip.c
+++ b/archive-zip.c
@@ -261,7 +261,8 @@ static void dos_time(time_t *time, int *dos_date, int *dos_time)
*dos_time = t->tm_sec / 2 + t->tm_min * 32 + t->tm_hour * 2048;
}
-int write_zip_archive(struct archiver_args *args)
+static int write_zip_archive(const struct archiver *ar,
+ struct archiver_args *args)
{
int err;
@@ -278,3 +279,14 @@ int write_zip_archive(struct archiver_args *args)
return err;
}
+
+static struct archiver zip_archiver = {
+ "zip",
+ write_zip_archive,
+ ARCHIVER_WANT_COMPRESSION_LEVELS|ARCHIVER_REMOTE
+};
+
+void init_zip_archiver(void)
+{
+ register_archiver(&zip_archiver);
+}
diff --git a/archive.c b/archive.c
index 42f2d2f..2a7a28e 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,
@@ -208,9 +207,9 @@ 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;
}
@@ -299,9 +298,10 @@ 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;
@@ -355,21 +355,27 @@ 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",
@@ -385,19 +391,55 @@ 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_pathspec_arg(argv + 1, &args);
- git_config(git_default_config, NULL);
+ return ar->write_archive(ar, &args);
+}
- return ar->write_archive(&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;
+
+ for (i = 0; i < nr_archivers; i++)
+ if (match_extension(filename, archivers[i]->name))
+ return archivers[i]->name;
+ return NULL;
}
diff --git a/archive.h b/archive.h
index 038ac35..2b0884f 100644
--- a/archive.h
+++ b/archive.h
@@ -14,17 +14,24 @@ struct archiver_args {
int compression_level;
};
-typedef int (*write_archive_fn_t)(struct archiver_args *);
+#define ARCHIVER_WANT_COMPRESSION_LEVELS 1
+#define ARCHIVER_REMOTE 2
+struct archiver {
+ const char *name;
+ int (*write_archive)(const struct archiver *, struct archiver_args *);
+ unsigned flags;
+ void *data;
+};
+extern void register_archiver(struct archiver *);
-typedef int (*write_archive_entry_fn_t)(struct archiver_args *args, const unsigned char *sha1, const char *path, size_t pathlen, unsigned int mode, void *buffer, unsigned long size);
+extern void init_tar_archiver(void);
+extern void init_zip_archiver(void);
-/*
- * Archive-format specific backends.
- */
-extern int write_tar_archive(struct archiver_args *);
-extern int write_zip_archive(struct archiver_args *);
+typedef int (*write_archive_entry_fn_t)(struct archiver_args *args, const unsigned char *sha1, const char *path, size_t pathlen, unsigned int mode, void *buffer, unsigned long size);
extern int write_archive_entries(struct archiver_args *args, write_archive_entry_fn_t write_entry);
-extern int write_archive(int argc, const char **argv, const char *prefix, int setup_prefix);
+extern int write_archive(int argc, const char **argv, const char *prefix, int setup_prefix, const char *name_hint, int remote);
+
+const char *archive_format_from_filename(const char *filename);
#endif /* ARCHIVE_H */
diff --git a/builtin/archive.c b/builtin/archive.c
index b14eaba..883c009 100644
--- a/builtin/archive.c
+++ b/builtin/archive.c
@@ -24,7 +24,8 @@ static void create_output_file(const char *output_file)
}
static int run_remote_archiver(int argc, const char **argv,
- const char *remote, const char *exec)
+ const char *remote, const char *exec,
+ const char *name_hint)
{
char buf[LARGE_PACKET_MAX];
int fd[2], i, len, rv;
@@ -37,6 +38,17 @@ static int run_remote_archiver(int argc, const char **argv,
transport = transport_get(_remote, _remote->url[0]);
transport_connect(transport, "git-upload-archive", exec, fd);
+ /*
+ * Inject a fake --format field at the beginning of the
+ * arguments, with the format inferred from our output
+ * filename. This way explicit --format options can override
+ * it.
+ */
+ if (name_hint) {
+ const char *format = archive_format_from_filename(name_hint);
+ if (format)
+ packet_write(fd[1], "argument --format=%s\n", format);
+ }
for (i = 1; i < argc; i++)
packet_write(fd[1], "argument %s\n", argv[i]);
packet_flush(fd[1]);
@@ -63,17 +75,6 @@ static int run_remote_archiver(int argc, const char **argv,
return !!rv;
}
-static const char *format_from_name(const char *filename)
-{
- const char *ext = strrchr(filename, '.');
- if (!ext)
- return NULL;
- ext++;
- if (!strcasecmp(ext, "zip"))
- return "--format=zip";
- return NULL;
-}
-
#define PARSE_OPT_KEEP_ALL ( PARSE_OPT_KEEP_DASHDASH | \
PARSE_OPT_KEEP_ARGV0 | \
PARSE_OPT_KEEP_UNKNOWN | \
@@ -84,7 +85,6 @@ int cmd_archive(int argc, const char **argv, const char *prefix)
const char *exec = "git-upload-archive";
const char *output = NULL;
const char *remote = NULL;
- const char *format_option = NULL;
struct option local_opts[] = {
OPT_STRING('o', "output", &output, "file",
"write the archive to this file"),
@@ -98,32 +98,13 @@ int cmd_archive(int argc, const char **argv, const char *prefix)
argc = parse_options(argc, argv, prefix, local_opts, NULL,
PARSE_OPT_KEEP_ALL);
- if (output) {
+ if (output)
create_output_file(output);
- format_option = format_from_name(output);
- }
-
- /*
- * We have enough room in argv[] to muck it in place, because
- * --output must have been given on the original command line
- * if we get to this point, and parse_options() must have eaten
- * it, i.e. we can add back one element to the array.
- *
- * We add a fake --format option at the beginning, with the
- * format inferred from our output filename. This way explicit
- * --format options can override it, and the fake option is
- * inserted before any "--" that might have been given.
- */
- if (format_option) {
- memmove(argv + 2, argv + 1, sizeof(*argv) * argc);
- argv[1] = format_option;
- argv[++argc] = NULL;
- }
if (remote)
- return run_remote_archiver(argc, argv, remote, exec);
+ return run_remote_archiver(argc, argv, remote, exec, output);
setvbuf(stderr, NULL, _IOLBF, BUFSIZ);
- return write_archive(argc, argv, prefix, 1);
+ return write_archive(argc, argv, prefix, 1, output, 0);
}
diff --git a/builtin/upload-archive.c b/builtin/upload-archive.c
index 73f788e..2d0b383 100644
--- a/builtin/upload-archive.c
+++ b/builtin/upload-archive.c
@@ -64,7 +64,7 @@ static int run_upload_archive(int argc, const char **argv, const char *prefix)
sent_argv[sent_argc] = NULL;
/* parse all options sent by the client */
- return write_archive(sent_argc, sent_argv, prefix, 0);
+ return write_archive(sent_argc, sent_argv, prefix, 0, NULL, 1);
}
__attribute__((format (printf, 1, 2)))
diff --git a/t/t5000-tar-tree.sh b/t/t5000-tar-tree.sh
index cff1b3e..9e3ba98 100755
--- a/t/t5000-tar-tree.sh
+++ b/t/t5000-tar-tree.sh
@@ -26,6 +26,8 @@ commit id embedding:
. ./test-lib.sh
UNZIP=${UNZIP:-unzip}
+GZIP=${GZIP:-gzip}
+GUNZIP=${GUNZIP:-gzip -d}
SUBSTFORMAT=%H%n
@@ -252,4 +254,102 @@ test_expect_success 'git-archive --prefix=olde-' '
test -f h/olde-a/bin/sh
'
+test_expect_success 'setup tar filters' '
+ git config tar.tar.foo.command "tr ab ba" &&
+ git config tar.bar.command "tr ab ba" &&
+ git config tar.bar.remote true
+'
+
+test_expect_success 'archive --list mentions user filter' '
+ git archive --list >output &&
+ grep "^tar\.foo\$" output &&
+ grep "^bar\$" output
+'
+
+test_expect_success 'archive --list shows only enabled remote filters' '
+ git archive --list --remote=. >output &&
+ ! grep "^tar\.foo\$" output &&
+ grep "^bar\$" output
+'
+
+test_expect_success 'invoke tar filter by format' '
+ git archive --format=tar.foo HEAD >config.tar.foo &&
+ tr ab ba <config.tar.foo >config.tar &&
+ test_cmp b.tar config.tar &&
+ git archive --format=bar HEAD >config.bar &&
+ tr ab ba <config.bar >config.tar &&
+ test_cmp b.tar config.tar
+'
+
+test_expect_success 'invoke tar filter by extension' '
+ git archive -o config-implicit.tar.foo HEAD &&
+ test_cmp config.tar.foo config-implicit.tar.foo &&
+ git archive -o config-implicit.bar HEAD &&
+ test_cmp config.tar.foo config-implicit.bar
+'
+
+test_expect_success 'default output format remains tar' '
+ git archive -o config-implicit.baz HEAD &&
+ test_cmp b.tar config-implicit.baz
+'
+
+test_expect_success 'extension matching requires dot' '
+ git archive -o config-implicittar.foo HEAD &&
+ test_cmp b.tar config-implicittar.foo
+'
+
+test_expect_success 'only enabled filters are available remotely' '
+ test_must_fail git archive --remote=. --format=tar.foo HEAD \
+ >remote.tar.foo &&
+ git archive --remote=. --format=bar >remote.bar HEAD &&
+ test_cmp remote.bar config.bar
+'
+
+if $GZIP --version >/dev/null 2>&1; then
+ test_set_prereq GZIP
+else
+ say "Skipping some tar.gz tests because gzip not found"
+fi
+
+test_expect_success GZIP 'git archive --format=tgz' '
+ git archive --format=tgz HEAD >j.tgz
+'
+
+test_expect_success GZIP 'git archive --format=tar.gz' '
+ git archive --format=tar.gz HEAD >j1.tar.gz &&
+ test_cmp j.tgz j1.tar.gz
+'
+
+test_expect_success GZIP 'infer tgz from .tgz filename' '
+ git archive --output=j2.tgz HEAD &&
+ test_cmp j.tgz j2.tgz
+'
+
+test_expect_success GZIP 'infer tgz from .tar.gz filename' '
+ git archive --output=j3.tar.gz HEAD &&
+ test_cmp j.tgz j3.tar.gz
+'
+
+if $GUNZIP --version >/dev/null 2>&1; then
+ test_set_prereq GUNZIP
+else
+ say "Skipping some tar.gz tests because gunzip was not found"
+fi
+
+test_expect_success GZIP,GUNZIP 'extract tgz file' '
+ $GUNZIP -c <j.tgz >j.tar &&
+ test_cmp b.tar j.tar
+'
+
+test_expect_success GZIP 'remote tar.gz is allowed by default' '
+ git archive --remote=. --format=tar.gz HEAD >remote.tar.gz &&
+ test_cmp j.tgz remote.tar.gz
+'
+
+test_expect_success GZIP 'remote tar.gz can be disabled' '
+ git config tar.tar.gz.remote false &&
+ test_must_fail git archive --remote=. --format=tar.gz HEAD \
+ >remote.tar.gz
+'
+
test_done