#include "cache.h"
#include "tar.h"
#include "archive.h"
+#include "run-command.h"
#define RECORDSIZE (512)
#define BLOCKSIZE (RECORDSIZE * 20)
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)
{
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")) {
}
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)
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]);
+ }
+}