mirrors/git
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Merge branch 'en/fast-export'

Browse Source 
* en/fast-export:
  fast-export: Document the fact that git-rev-list arguments are accepted
  Add new fast-export testcases
  fast-export: Add a --tag-of-filtered-object option for newly dangling tags
  fast-export: Do parent rewriting to avoid dropping relevant commits
  fast-export: Make sure we show actual ref names instead of "(null)"
  fast-export: Omit tags that tag trees
  fast-export: Set revs.topo_order before calling setup_revisions
This commit is contained in:
Junio C Hamano
2009-07-26 11:23:52 -07:00
parent d8f7be2ebc 8af15d282e
commit feab68cd91
3 changed files with 187 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

82
builtin-fast-export.c
View File

@ -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;
@ -289,6 +304,23 @@ static void handle_tag(const char *name, struct tag *tag)
char *buf;
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
* such tags.
*/
tagged = tag->tagged;
while (tagged->type == OBJ_TAG) {
tagged = ((struct tag *)tagged)->tagged;
}
if (tagged->type == OBJ_TREE) {
warning("Omitting tag %s,\nsince tags of trees (or tags of tags of trees, etc.) are not supported.",
sha1_to_hex(tag->object.sha1));
return;
}
buf = read_sha1_file(tag->object.sha1, &type, &size);
if (!buf)
@ -333,10 +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 : "");
@ -504,6 +571,9 @@ 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",
@ -520,6 +590,9 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix)
git_config(git_default_config, NULL);
init_revisions(&revs, prefix);
revs.topo_order = 1;
revs.show_source = 1;
revs.rewrite_parents = 1;
argc = setup_revisions(argc, argv, &revs, NULL);
argc = parse_options(argc, argv, prefix, options, fast_export_usage, 0);
if (argc > 1)
@ -530,18 +603,13 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix)
get_tags_and_duplicates(&revs.pending, &extra_refs);
revs.topo_order = 1;
if (prepare_revision_walk(&revs))
die("revision walk setup failed");
revs.diffopt.format_callback = show_filemodify;
DIFF_OPT_SET(&revs.diffopt, RECURSIVE);
while ((commit = get_revision(&revs))) {
if (has_unshown_parent(commit)) {
struct commit_list *parent = commit->parents;
add_object_array(&commit->object, NULL, &commits);
for (; parent; parent = parent->next)
if (!parent->item->util)
parent->item->util = commit->util;
}
else {
handle_commit(commit, &revs);