diff options
| -rw-r--r-- | Documentation/git-fast-export.txt | 11 | ||||
| -rw-r--r-- | builtin-fast-export.c | 59 |
2 files changed, 68 insertions, 2 deletions
diff --git a/Documentation/git-fast-export.txt b/Documentation/git-fast-export.txt index 0c9eb567cb..194abdeeba 100644 --- a/Documentation/git-fast-export.txt +++ b/Documentation/git-fast-export.txt @@ -36,6 +36,17 @@ when encountering a signed tag. With 'strip', the tags will be made unsigned, with 'verbatim', they will be silently exported and with 'warn', they will be exported, but you will see a warning. +--tag-of-filtered-object=(abort|drop|rewrite):: + Specify how to handle tags whose tagged objectis filtered out. + Since revisions and files to export can be limited by path, + tagged objects may be filtered completely. ++ +When asking to 'abort' (which is the default), this program will die +when encountering such a tag. With 'drop' it will omit such tags from +the output. With 'rewrite', if the tagged object is a commit, it will +rewrite the tag to tag an ancestor commit (via parent rewriting; see +linkgit:git-rev-list[1]) + -M:: -C:: Perform move and/or copy detection, as described in the diff --git a/builtin-fast-export.c b/builtin-fast-export.c index 9b8bd37290..dc2c6ab173 100644 --- a/builtin-fast-export.c +++ b/builtin-fast-export.c @@ -23,7 +23,8 @@ static const char *fast_export_usage[] = { }; static int progress; -static enum { VERBATIM, WARN, STRIP, ABORT } signed_tag_mode = ABORT; +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 parse_opt_signed_tag_mode(const struct option *opt, @@ -42,6 +43,20 @@ static int parse_opt_signed_tag_mode(const struct option *opt, return 0; } +static int parse_opt_tag_of_filtered_mode(const struct option *opt, + const char *arg, int unset) +{ + if (unset || !strcmp(arg, "abort")) + tag_of_filtered_mode = ABORT; + else if (!strcmp(arg, "drop")) + tag_of_filtered_mode = DROP; + else if (!strcmp(arg, "rewrite")) + tag_of_filtered_mode = REWRITE; + else + return error("Unknown tag-of-filtered mode: %s", arg); + return 0; +} + static struct decoration idnums; static uint32_t last_idnum; @@ -290,6 +305,8 @@ static void handle_tag(const char *name, struct tag *tag) const char *tagger, *tagger_end, *message; size_t message_size = 0; struct object *tagged; + int tagged_mark; + struct commit *p; /* Trees have no identifer in fast-export output, thus we have no way * to output tags of trees, tags of tags of trees, etc. Simply omit @@ -348,10 +365,45 @@ static void handle_tag(const char *name, struct tag *tag) } } + /* handle tag->tagged having been filtered out due to paths specified */ + tagged = tag->tagged; + tagged_mark = get_object_mark(tagged); + if (!tagged_mark) { + switch(tag_of_filtered_mode) { + case ABORT: + die ("Tag %s tags unexported object; use " + "--tag-of-filtered-object=<mode> to handle it.", + sha1_to_hex(tag->object.sha1)); + case DROP: + /* Ignore this tag altogether */ + return; + case REWRITE: + if (tagged->type != OBJ_COMMIT) { + die ("Tag %s tags unexported %s!", + sha1_to_hex(tag->object.sha1), + typename(tagged->type)); + } + p = (struct commit *)tagged; + for (;;) { + if (p->parents && p->parents->next) + break; + if (p->object.flags & UNINTERESTING) + break; + if (!(p->object.flags & TREESAME)) + break; + if (!p->parents) + die ("Can't find replacement commit for tag %s\n", + sha1_to_hex(tag->object.sha1)); + p = p->parents->item; + } + tagged_mark = get_object_mark(&p->object); + } + } + if (!prefixcmp(name, "refs/tags/")) name += 10; printf("tag %s\nfrom :%d\n%.*s%sdata %d\n%.*s\n", - name, get_object_mark(tag->tagged), + name, tagged_mark, (int)(tagger_end - tagger), tagger, tagger == tagger_end ? "" : "\n", (int)message_size, (int)message_size, message ? message : ""); @@ -513,6 +565,9 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix) OPT_CALLBACK(0, "signed-tags", &signed_tag_mode, "mode", "select handling of signed tags", parse_opt_signed_tag_mode), + OPT_CALLBACK(0, "tag-of-filtered-object", &tag_of_filtered_mode, "mode", + "select handling of tags that tag filtered objects", + parse_opt_tag_of_filtered_mode), OPT_STRING(0, "export-marks", &export_filename, "FILE", "Dump marks to this file"), OPT_STRING(0, "import-marks", &import_filename, "FILE", |