fast-export: add new --refspec option

So that we can convert the exported ref names.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/git-fast-export.txt b/Documentation/git-fast-export.txt
index 85f1f30fdf5c0a741c3c575bfa393fc7d88d308f..221506b04ba55fac2151d8ac95da7df57eb9d411 100644 (file)
--- a/Documentation/git-fast-export.txt
+++ b/Documentation/git-fast-export.txt
@@ -105,6 +105,10 @@ marks the same across runs.
        in the commit (as opposed to just listing the files which are
        different from the commit's first parent).
 
+--refspec::
+       Apply the specified refspec to each ref exported. Multiple of them can
+       be specified.
+
 [<git-rev-list-args>...]::
        A list of arguments, acceptable to 'git rev-parse' and
        'git rev-list', that specifies the specific objects and references

diff --git a/builtin/fast-export.c b/builtin/fast-export.c
index bc3490cd56ebeaae7322261766be460d09646b5b..ad9c17e8e78bb86066aea807d8e0ce9ba68c5897 100644 (file)
--- a/builtin/fast-export.c
+++ b/builtin/fast-export.c
@@ -17,6 +17,7 @@
 #include "utf8.h"
 #include "parse-options.h"
 #include "quote.h"
+#include "remote.h"
 
 static const char *fast_export_usage[] = {
        N_("git fast-export [rev-list-opts]"),
@@ -31,6 +32,8 @@ static int use_done_feature;
 static int no_data;
 static int full_tree;
 static struct string_list extra_refs = STRING_LIST_INIT_NODUP;
+static struct refspec *refspecs;
+static int refspecs_nr;
 
 static int parse_opt_signed_tag_mode(const struct option *opt,
                                     const char *arg, int unset)
@@ -525,6 +528,15 @@ static void get_tags_and_duplicates(struct rev_cmdline_info *info)
                if (dwim_ref(e->name, strlen(e->name), sha1, &full_name) != 1)
                        continue;
 
+               if (refspecs) {
+                       char *private;
+                       private = apply_refspecs(refspecs, refspecs_nr, full_name);
+                       if (private) {
+                               free(full_name);
+                               full_name = private;
+                       }
+               }
+
                commit = get_commit(e, full_name);
                if (!commit) {
                        warning("%s: Unexpected object of type %s, skipping.",
@@ -668,6 +680,7 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix)
        struct commit *commit;
        char *export_filename = NULL, *import_filename = NULL;
        uint32_t lastimportid;
+       struct string_list refspecs_list = STRING_LIST_INIT_NODUP;
        struct option options[] = {
                OPT_INTEGER(0, "progress", &progress,
                            N_("show progress after <n> objects")),
@@ -688,6 +701,8 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix)
                OPT_BOOL(0, "use-done-feature", &use_done_feature,
                             N_("Use the done feature to terminate the stream")),
                OPT_BOOL(0, "no-data", &no_data, N_("Skip output of blob data")),
+               OPT_STRING_LIST(0, "refspec", &refspecs_list, N_("refspec"),
+                            N_("Apply refspec to exported refs")),
                OPT_END()
        };
 
@@ -707,6 +722,21 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix)
        if (argc > 1)
                usage_with_options (fast_export_usage, options);
 
+       if (refspecs_list.nr) {
+               const char **refspecs_str;
+               int i;
+
+               refspecs_str = xmalloc(sizeof(*refspecs_str) * refspecs_list.nr);
+               for (i = 0; i < refspecs_list.nr; i++)
+                       refspecs_str[i] = refspecs_list.items[i].string;
+
+               refspecs_nr = refspecs_list.nr;
+               refspecs = parse_fetch_refspec(refspecs_nr, refspecs_str);
+
+               string_list_clear(&refspecs_list, 1);
+               free(refspecs_str);
+       }
+
        if (use_done_feature)
                printf("feature done\n");
 
@@ -741,5 +771,7 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix)
        if (use_done_feature)
                printf("done\n");
 
+       free_refspec(refspecs_nr, refspecs);
+
        return 0;
 }

diff --git a/t/t9350-fast-export.sh b/t/t9350-fast-export.sh
index 2312dec8f096fe7e36feeabd0e1cd85b5e421d4a..3d475af173fffbc0b85f8cbc9950bcec58b9daa5 100755 (executable)
--- a/t/t9350-fast-export.sh
+++ b/t/t9350-fast-export.sh
@@ -504,4 +504,11 @@ test_expect_success 'refs are updated even if no commits need to be exported' '
        test_cmp expected actual
 '
 
+test_expect_success 'use refspec' '
+       git fast-export --refspec refs/heads/master:refs/heads/foobar master | \
+               grep "^commit " | sort | uniq > actual &&
+       echo "commit refs/heads/foobar" > expected &&
+       test_cmp expected actual
+'
+
 test_done