fast-export: support done feature

If fast-export is being used to generate a fast-import stream that
will be used afterwards it is desirable to indicate the end of the
stream with the new 'done' command.

Add a flag that causes fast-export to end with 'done'.

Signed-off-by: Sverre Rabbelier <srabbelier@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/git-fast-export.txt b/Documentation/git-fast-export.txt
index 781bd6edc3cce9d1488bf793231d08119e142948..e3f845371a9f4385cc36590023b18a5aba97a6ad 100644 (file)
--- a/Documentation/git-fast-export.txt
+++ b/Documentation/git-fast-export.txt
@@ -82,6 +82,10 @@ marks the same across runs.
        allow that.  So fake a tagger to be able to fast-import the
        output.
 
+--use-done-feature::
+       Start the stream with a 'feature done' stanza, and terminate
+       it with a 'done' command.
+
 --no-data::
        Skip output of blob objects and instead refer to blobs via
        their original SHA-1 hash.  This is useful when rewriting the

diff --git a/builtin/fast-export.c b/builtin/fast-export.c
index daf19451ba7df541d1314c880679749232ccce35..becef8578283ea0a8620041ce7e974baf7b6e27d 100644 (file)
--- a/builtin/fast-export.c
+++ b/builtin/fast-export.c
@@ -26,6 +26,7 @@ static int progress;
 static enum { ABORT, VERBATIM, WARN, STRIP } signed_tag_mode = ABORT;
 static enum { ERROR, DROP, REWRITE } tag_of_filtered_mode = ABORT;
 static int fake_missing_tagger;
+static int use_done_feature;
 static int no_data;
 static int full_tree;
 
@@ -627,6 +628,8 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix)
                             "Fake a tagger when tags lack one"),
                OPT_BOOLEAN(0, "full-tree", &full_tree,
                             "Output full tree for each commit"),
+               OPT_BOOLEAN(0, "use-done-feature", &use_done_feature,
+                            "Use the done feature to terminate the stream"),
                { OPTION_NEGBIT, 0, "data", &no_data, NULL,
                        "Skip output of blob data",
                        PARSE_OPT_NOARG | PARSE_OPT_NEGHELP, NULL, 1 },
@@ -648,6 +651,9 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix)
        if (argc > 1)
                usage_with_options (fast_export_usage, options);
 
+       if (use_done_feature)
+               printf("feature done\n");
+
        if (import_filename)
                import_marks(import_filename);
 
@@ -675,5 +681,8 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix)
        if (export_filename)
                export_marks(export_filename);
 
+       if (use_done_feature)
+               printf("done\n");
+
        return 0;
 }