diff options
Diffstat (limited to 'builtin/fast-export.c')
| -rw-r--r-- | builtin/fast-export.c | 630 |
1 files changed, 512 insertions, 118 deletions
diff --git a/builtin/fast-export.c b/builtin/fast-export.c index c8fd46b872..8164b581a6 100644 --- a/builtin/fast-export.c +++ b/builtin/fast-export.c @@ -5,6 +5,7 @@ */ #include "builtin.h" #include "cache.h" +#include "refs.h" #include "commit.h" #include "object.h" #include "tag.h" @@ -16,18 +17,26 @@ #include "string-list.h" #include "utf8.h" #include "parse-options.h" +#include "quote.h" +#include "remote.h" +#include "blob.h" static const char *fast_export_usage[] = { - "git fast-export [rev-list-opts]", + N_("git fast-export [rev-list-opts]"), NULL }; static int progress; -static enum { ABORT, VERBATIM, WARN, STRIP } signed_tag_mode = ABORT; -static enum { ERROR, DROP, REWRITE } tag_of_filtered_mode = ABORT; +static enum { ABORT, VERBATIM, WARN, WARN_STRIP, STRIP } signed_tag_mode = ABORT; +static enum { ERROR, DROP, REWRITE } tag_of_filtered_mode = ERROR; static int fake_missing_tagger; +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 anonymize; static int parse_opt_signed_tag_mode(const struct option *opt, const char *arg, int unset) @@ -38,10 +47,12 @@ static int parse_opt_signed_tag_mode(const struct option *opt, signed_tag_mode = VERBATIM; else if (!strcmp(arg, "warn")) signed_tag_mode = WARN; + else if (!strcmp(arg, "warn-strip")) + signed_tag_mode = WARN_STRIP; else if (!strcmp(arg, "strip")) signed_tag_mode = STRIP; else - return error("Unknown signed-tag mode: %s", arg); + return error("Unknown signed-tags mode: %s", arg); return 0; } @@ -49,7 +60,7 @@ 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; + tag_of_filtered_mode = ERROR; else if (!strcmp(arg, "drop")) tag_of_filtered_mode = DROP; else if (!strcmp(arg, "rewrite")) @@ -73,6 +84,76 @@ static int has_unshown_parent(struct commit *commit) return 0; } +struct anonymized_entry { + struct hashmap_entry hash; + const char *orig; + size_t orig_len; + const char *anon; + size_t anon_len; +}; + +static int anonymized_entry_cmp(const void *va, const void *vb, + const void *data) +{ + const struct anonymized_entry *a = va, *b = vb; + return a->orig_len != b->orig_len || + memcmp(a->orig, b->orig, a->orig_len); +} + +/* + * Basically keep a cache of X->Y so that we can repeatedly replace + * the same anonymized string with another. The actual generation + * is farmed out to the generate function. + */ +static const void *anonymize_mem(struct hashmap *map, + void *(*generate)(const void *, size_t *), + const void *orig, size_t *len) +{ + struct anonymized_entry key, *ret; + + if (!map->cmpfn) + hashmap_init(map, anonymized_entry_cmp, 0); + + hashmap_entry_init(&key, memhash(orig, *len)); + key.orig = orig; + key.orig_len = *len; + ret = hashmap_get(map, &key, NULL); + + if (!ret) { + ret = xmalloc(sizeof(*ret)); + hashmap_entry_init(&ret->hash, key.hash.hash); + ret->orig = xstrdup(orig); + ret->orig_len = *len; + ret->anon = generate(orig, len); + ret->anon_len = *len; + hashmap_put(map, ret); + } + + *len = ret->anon_len; + return ret->anon; +} + +/* + * We anonymize each component of a path individually, + * so that paths a/b and a/c will share a common root. + * The paths are cached via anonymize_mem so that repeated + * lookups for "a" will yield the same value. + */ +static void anonymize_path(struct strbuf *out, const char *path, + struct hashmap *map, + void *(*generate)(const void *, size_t *)) +{ + while (*path) { + const char *end_of_component = strchrnul(path, '/'); + size_t len = end_of_component - path; + const char *c = anonymize_mem(map, generate, path, &len); + strbuf_add(out, c, len); + path = end_of_component; + if (*path) + strbuf_addch(out, *path++); + } +} + /* Since intptr_t is C99, we do not use it here */ static inline uint32_t *mark_to_ptr(uint32_t mark) { @@ -111,12 +192,33 @@ static void show_progress(void) printf("progress %d objects\n", counter); } -static void handle_object(const unsigned char *sha1) +/* + * Ideally we would want some transformation of the blob data here + * that is unreversible, but would still be the same size and have + * the same data relationship to other blobs (so that we get the same + * delta and packing behavior as the original). But the first and last + * requirements there are probably mutually exclusive, so let's take + * the easy way out for now, and just generate arbitrary content. + * + * There's no need to cache this result with anonymize_mem, since + * we already handle blob content caching with marks. + */ +static char *anonymize_blob(unsigned long *size) +{ + static int counter; + struct strbuf out = STRBUF_INIT; + strbuf_addf(&out, "anonymous blob %d", counter++); + *size = out.len; + return strbuf_detach(&out, NULL); +} + +static void export_blob(const unsigned char *sha1) { unsigned long size; enum object_type type; char *buf; struct object *object; + int eaten; if (no_data) return; @@ -124,16 +226,25 @@ static void handle_object(const unsigned char *sha1) if (is_null_sha1(sha1)) return; - object = parse_object(sha1); - if (!object) - die ("Could not read blob %s", sha1_to_hex(sha1)); - - if (object->flags & SHOWN) + object = lookup_object(sha1); + if (object && object->flags & SHOWN) return; - buf = read_sha1_file(sha1, &type, &size); - if (!buf) - die ("Could not read blob %s", sha1_to_hex(sha1)); + if (anonymize) { + buf = anonymize_blob(&size); + object = (struct object *)lookup_blob(sha1); + eaten = 0; + } else { + buf = read_sha1_file(sha1, &type, &size); + if (!buf) + die ("Could not read blob %s", sha1_to_hex(sha1)); + if (check_sha1_signature(sha1, buf, size, typename(type)) < 0) + die("sha1 mismatch in blob %s", sha1_to_hex(sha1)); + object = parse_object_buffer(sha1, type, size, buf, &eaten); + } + + if (!object) + die("Could not read blob %s", sha1_to_hex(sha1)); mark_next_object(object); @@ -145,7 +256,8 @@ static void handle_object(const unsigned char *sha1) show_progress(); object->flags |= SHOWN; - free(buf); + if (!eaten) + free(buf); } static int depth_first(const void *a_, const void *b_) @@ -178,6 +290,54 @@ static int depth_first(const void *a_, const void *b_) return (a->status == 'R') - (b->status == 'R'); } +static void print_path_1(const char *path) +{ + int need_quote = quote_c_style(path, NULL, NULL, 0); + if (need_quote) + quote_c_style(path, NULL, stdout, 0); + else if (strchr(path, ' ')) + printf("\"%s\"", path); + else + printf("%s", path); +} + +static void *anonymize_path_component(const void *path, size_t *len) +{ + static int counter; + struct strbuf out = STRBUF_INIT; + strbuf_addf(&out, "path%d", counter++); + return strbuf_detach(&out, len); +} + +static void print_path(const char *path) +{ + if (!anonymize) + print_path_1(path); + else { + static struct hashmap paths; + static struct strbuf anon = STRBUF_INIT; + + anonymize_path(&anon, path, &paths, anonymize_path_component); + print_path_1(anon.buf); + strbuf_reset(&anon); + } +} + +static void *generate_fake_sha1(const void *old, size_t *len) +{ + static uint32_t counter = 1; /* avoid null sha1 */ + unsigned char *out = xcalloc(20, 1); + put_be32(out + 16, counter++); + return out; +} + +static const unsigned char *anonymize_sha1(const unsigned char *sha1) +{ + static struct hashmap sha1s; + size_t len = 20; + return anonymize_mem(&sha1s, generate_fake_sha1, sha1, &len); +} + static void show_filemodify(struct diff_queue_struct *q, struct diff_options *options, void *data) { @@ -195,13 +355,18 @@ static void show_filemodify(struct diff_queue_struct *q, switch (q->queue[i]->status) { case DIFF_STATUS_DELETED: - printf("D %s\n", spec->path); + printf("D "); + print_path(spec->path); + putchar('\n'); break; case DIFF_STATUS_COPIED: case DIFF_STATUS_RENAMED: - printf("%c \"%s\" \"%s\"\n", q->queue[i]->status, - ospec->path, spec->path); + printf("%c ", q->queue[i]->status); + print_path(ospec->path); + putchar(' '); + print_path(spec->path); + putchar('\n'); if (!hashcmp(ospec->sha1, spec->sha1) && ospec->mode == spec->mode) @@ -216,13 +381,17 @@ static void show_filemodify(struct diff_queue_struct *q, * output the SHA-1 verbatim. */ if (no_data || S_ISGITLINK(spec->mode)) - printf("M %06o %s %s\n", spec->mode, - sha1_to_hex(spec->sha1), spec->path); + printf("M %06o %s ", spec->mode, + sha1_to_hex(anonymize ? + anonymize_sha1(spec->sha1) : + spec->sha1)); else { struct object *object = lookup_object(spec->sha1); - printf("M %06o :%d %s\n", spec->mode, - get_object_mark(object), spec->path); + printf("M %06o :%d ", spec->mode, + get_object_mark(object)); } + print_path(spec->path); + putchar('\n'); break; default: @@ -249,28 +418,139 @@ static const char *find_encoding(const char *begin, const char *end) return bol; } +static void *anonymize_ref_component(const void *old, size_t *len) +{ + static int counter; + struct strbuf out = STRBUF_INIT; + strbuf_addf(&out, "ref%d", counter++); + return strbuf_detach(&out, len); +} + +static const char *anonymize_refname(const char *refname) +{ + /* + * If any of these prefixes is found, we will leave it intact + * so that tags remain tags and so forth. + */ + static const char *prefixes[] = { + "refs/heads/", + "refs/tags/", + "refs/remotes/", + "refs/" + }; + static struct hashmap refs; + static struct strbuf anon = STRBUF_INIT; + int i; + + /* + * We also leave "master" as a special case, since it does not reveal + * anything interesting. + */ + if (!strcmp(refname, "refs/heads/master")) + return refname; + + strbuf_reset(&anon); + for (i = 0; i < ARRAY_SIZE(prefixes); i++) { + if (skip_prefix(refname, prefixes[i], &refname)) { + strbuf_addstr(&anon, prefixes[i]); + break; + } + } + + anonymize_path(&anon, refname, &refs, anonymize_ref_component); + return anon.buf; +} + +/* + * We do not even bother to cache commit messages, as they are unlikely + * to be repeated verbatim, and it is not that interesting when they are. + */ +static char *anonymize_commit_message(const char *old) +{ + static int counter; + return xstrfmt("subject %d\n\nbody\n", counter++); +} + +static struct hashmap idents; +static void *anonymize_ident(const void *old, size_t *len) +{ + static int counter; + struct strbuf out = STRBUF_INIT; + strbuf_addf(&out, "User %d <user%d@example.com>", counter, counter); + counter++; + return strbuf_detach(&out, len); +} + +/* + * Our strategy here is to anonymize the names and email addresses, + * but keep timestamps intact, as they influence things like traversal + * order (and by themselves should not be too revealing). + */ +static void anonymize_ident_line(const char **beg, const char **end) +{ + static struct strbuf buffers[] = { STRBUF_INIT, STRBUF_INIT }; + static unsigned which_buffer; + + struct strbuf *out; + struct ident_split split; + const char *end_of_header; + + out = &buffers[which_buffer++]; + which_buffer %= ARRAY_SIZE(buffers); + strbuf_reset(out); + + /* skip "committer", "author", "tagger", etc */ + end_of_header = strchr(*beg, ' '); + if (!end_of_header) + die("BUG: malformed line fed to anonymize_ident_line: %.*s", + (int)(*end - *beg), *beg); + end_of_header++; + strbuf_add(out, *beg, end_of_header - *beg); + + if (!split_ident_line(&split, end_of_header, *end - end_of_header) && + split.date_begin) { + const char *ident; + size_t len; + + len = split.mail_end - split.name_begin; + ident = anonymize_mem(&idents, anonymize_ident, + split.name_begin, &len); + strbuf_add(out, ident, len); + strbuf_addch(out, ' '); + strbuf_add(out, split.date_begin, split.tz_end - split.date_begin); + } else { + strbuf_addstr(out, "Malformed Ident <malformed@example.com> 0 -0000"); + } + + *beg = out->buf; + *end = out->buf + out->len; +} + static void handle_commit(struct commit *commit, struct rev_info *rev) { int saved_output_format = rev->diffopt.output_format; + const char *commit_buffer; const char *author, *author_end, *committer, *committer_end; const char *encoding, *message; char *reencoded = NULL; struct commit_list *p; + const char *refname; int i; rev->diffopt.output_format = DIFF_FORMAT_CALLBACK; - parse_commit(commit); - author = strstr(commit->buffer, "\nauthor "); + parse_commit_or_die(commit); + commit_buffer = get_commit_buffer(commit, NULL); + author = strstr(commit_buffer, "\nauthor "); if (!author) die ("Could not find author in commit %s", - sha1_to_hex(commit->object.sha1)); + oid_to_hex(&commit->object.oid)); author++; author_end = strchrnul(author, '\n'); committer = strstr(author_end, "\ncommitter "); if (!committer) die ("Could not find committer in commit %s", - sha1_to_hex(commit->object.sha1)); + oid_to_hex(&commit->object.oid)); committer++; committer_end = strchrnul(committer, '\n'); message = strstr(committer_end, "\n\n"); @@ -281,26 +561,35 @@ static void handle_commit(struct commit *commit, struct rev_info *rev) if (commit->parents && get_object_mark(&commit->parents->item->object) != 0 && !full_tree) { - parse_commit(commit->parents->item); - diff_tree_sha1(commit->parents->item->tree->object.sha1, - commit->tree->object.sha1, "", &rev->diffopt); + parse_commit_or_die(commit->parents->item); + diff_tree_sha1(commit->parents->item->tree->object.oid.hash, + commit->tree->object.oid.hash, "", &rev->diffopt); } else - diff_root_tree_sha1(commit->tree->object.sha1, + diff_root_tree_sha1(commit->tree->object.oid.hash, "", &rev->diffopt); /* Export the referenced blobs, and remember the marks. */ for (i = 0; i < diff_queued_diff.nr; i++) if (!S_ISGITLINK(diff_queued_diff.queue[i]->two->mode)) - handle_object(diff_queued_diff.queue[i]->two->sha1); + export_blob(diff_queued_diff.queue[i]->two->sha1); + + refname = commit->util; + if (anonymize) { + refname = anonymize_refname(refname); + anonymize_ident_line(&committer, &committer_end); + anonymize_ident_line(&author, &author_end); + } mark_next_object(&commit->object); - if (!is_encoding_utf8(encoding)) + if (anonymize) + reencoded = anonymize_commit_message(message); + else if (!is_encoding_utf8(encoding)) reencoded = reencode_string(message, "UTF-8", encoding); if (!commit->parents) - printf("reset %s\n", (const char*)commit->util); + printf("reset %s\n", refname); printf("commit %s\nmark :%"PRIu32"\n%.*s\n%.*s\ndata %u\n%s", - (const char *)commit->util, last_idnum, + refname, last_idnum, (int)(author_end - author), author, (int)(committer_end - committer), committer, (unsigned)(reencoded @@ -308,6 +597,7 @@ static void handle_commit(struct commit *commit, struct rev_info *rev) ? strlen(message) : 0), reencoded ? reencoded : message ? message : ""); free(reencoded); + unuse_commit_buffer(commit, commit_buffer); for (i = 0, p = commit->parents; p; p = p->next) { int mark = get_object_mark(&p->item->object); @@ -330,6 +620,14 @@ static void handle_commit(struct commit *commit, struct rev_info *rev) show_progress(); } +static void *anonymize_tag(const void *old, size_t *len) +{ + static int counter; + struct strbuf out = STRBUF_INIT; + strbuf_addf(&out, "tag message %d", counter++); + return strbuf_detach(&out, len); +} + static void handle_tail(struct object_array *commits, struct rev_info *revs) { struct commit *commit; @@ -353,7 +651,7 @@ static void handle_tag(const char *name, struct tag *tag) int tagged_mark; struct commit *p; - /* Trees have no identifer in fast-export output, thus we have no way + /* Trees have no identifier in fast-export output, thus we have no way * to output tags of trees, tags of tags of trees, etc. Simply omit * such tags. */ @@ -363,13 +661,13 @@ static void handle_tag(const char *name, struct tag *tag) } 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)); + oid_to_hex(&tag->object.oid)); return; } - buf = read_sha1_file(tag->object.sha1, &type, &size); + buf = read_sha1_file(tag->object.oid.hash, &type, &size); if (!buf) - die ("Could not read tag %s", sha1_to_hex(tag->object.sha1)); + die ("Could not read tag %s", oid_to_hex(&tag->object.oid)); message = memmem(buf, size, "\n\n", 2); if (message) { message += 2; @@ -386,6 +684,17 @@ static void handle_tag(const char *name, struct tag *tag) } else { tagger++; tagger_end = strchrnul(tagger, '\n'); + if (anonymize) + anonymize_ident_line(&tagger, &tagger_end); + } + + if (anonymize) { + name = anonymize_refname(name); + if (message) { + static struct hashmap tags; + message = anonymize_mem(&tags, anonymize_tag, + message, &message_size); + } } /* handle signed tags */ @@ -396,14 +705,18 @@ static void handle_tag(const char *name, struct tag *tag) switch(signed_tag_mode) { case ABORT: die ("Encountered signed tag %s; use " - "--signed-tag=<mode> to handle it.", - sha1_to_hex(tag->object.sha1)); + "--signed-tags=<mode> to handle it.", + oid_to_hex(&tag->object.oid)); case WARN: warning ("Exporting signed tag %s", - sha1_to_hex(tag->object.sha1)); + oid_to_hex(&tag->object.oid)); /* fallthru */ case VERBATIM: break; + case WARN_STRIP: + warning ("Stripping signature from tag %s", + oid_to_hex(&tag->object.oid)); + /* fallthru */ case STRIP: message_size = signature + 1 - message; break; @@ -418,14 +731,14 @@ static void handle_tag(const char *name, struct tag *tag) case ABORT: die ("Tag %s tags unexported object; use " "--tag-of-filtered-object=<mode> to handle it.", - sha1_to_hex(tag->object.sha1)); + oid_to_hex(&tag->object.oid)); 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), + oid_to_hex(&tag->object.oid), typename(tagged->type)); } p = (struct commit *)tagged; @@ -438,14 +751,14 @@ static void handle_tag(const char *name, struct tag *tag) break; if (!p->parents) die ("Can't find replacement commit for tag %s\n", - sha1_to_hex(tag->object.sha1)); + oid_to_hex(&tag->object.oid)); p = p->parents->item; } tagged_mark = get_object_mark(&p->object); } } - if (!prefixcmp(name, "refs/tags/")) + if (starts_with(name, "refs/tags/")) name += 10; printf("tag %s\nfrom :%d\n%.*s%sdata %d\n%.*s\n", name, tagged_mark, @@ -454,76 +767,101 @@ static void handle_tag(const char *name, struct tag *tag) (int)message_size, (int)message_size, message ? message : ""); } -static void get_tags_and_duplicates(struct object_array *pending, - struct string_list *extra_refs) +static struct commit *get_commit(struct rev_cmdline_entry *e, char *full_name) +{ + switch (e->item->type) { + case OBJ_COMMIT: + return (struct commit *)e->item; + case OBJ_TAG: { + struct tag *tag = (struct tag *)e->item; + + /* handle nested tags */ + while (tag && tag->object.type == OBJ_TAG) { + parse_object(tag->object.oid.hash); + string_list_append(&extra_refs, full_name)->util = tag; + tag = (struct tag *)tag->tagged; + } + if (!tag) + die("Tag %s points nowhere?", e->name); + return (struct commit *)tag; + break; + } + default: + return NULL; + } +} + +static void get_tags_and_duplicates(struct rev_cmdline_info *info) { - struct tag *tag; int i; - for (i = 0; i < pending->nr; i++) { - struct object_array_entry *e = pending->objects + i; + for (i = 0; i < info->nr; i++) { + struct rev_cmdline_entry *e = info->rev + i; unsigned char sha1[20]; - struct commit *commit = commit; + struct commit *commit; char *full_name; - if (dwim_ref(e->name, strlen(e->name), sha1, &full_name) != 1) + if (e->flags & UNINTERESTING) continue; - switch (e->item->type) { - case OBJ_COMMIT: - commit = (struct commit *)e->item; - break; - case OBJ_TAG: - tag = (struct tag *)e->item; + if (dwim_ref(e->name, strlen(e->name), sha1, &full_name) != 1) + continue; - /* handle nested tags */ - while (tag && tag->object.type == OBJ_TAG) { - parse_object(tag->object.sha1); - string_list_append(extra_refs, full_name)->util = tag; - tag = (struct tag *)tag->tagged; + if (refspecs) { + char *private; + private = apply_refspecs(refspecs, refspecs_nr, full_name); + if (private) { + free(full_name); + full_name = private; } - if (!tag) - die ("Tag %s points nowhere?", e->name); - switch(tag->object.type) { - case OBJ_COMMIT: - commit = (struct commit *)tag; - break; - case OBJ_BLOB: - handle_object(tag->object.sha1); - continue; - default: /* OBJ_TAG (nested tags) is already handled */ - warning("Tag points to object of unexpected type %s, skipping.", - typename(tag->object.type)); - continue; - } - break; - default: + } + + commit = get_commit(e, full_name); + if (!commit) { warning("%s: Unexpected object of type %s, skipping.", e->name, typename(e->item->type)); continue; } - if (commit->util) - /* more than one name for the same object */ - string_list_append(extra_refs, full_name)->util = commit; - else + + switch(commit->object.type) { + case OBJ_COMMIT: + break; + case OBJ_BLOB: + export_blob(commit->object.oid.hash); + continue; + default: /* OBJ_TAG (nested tags) is already handled */ + warning("Tag points to object of unexpected type %s, skipping.", + typename(commit->object.type)); + continue; + } + + /* + * This ref will not be updated through a commit, lets make + * sure it gets properly updated eventually. + */ + if (commit->util || commit->object.flags & SHOWN) + string_list_append(&extra_refs, full_name)->util = commit; + if (!commit->util) commit->util = full_name; } } -static void handle_tags_and_duplicates(struct string_list *extra_refs) +static void handle_tags_and_duplicates(void) { struct commit *commit; int i; - for (i = extra_refs->nr - 1; i >= 0; i--) { - const char *name = extra_refs->items[i].string; - struct object *object = extra_refs->items[i].util; + for (i = extra_refs.nr - 1; i >= 0; i--) { + const char *name = extra_refs.items[i].string; + struct object *object = extra_refs.items[i].util; switch (object->type) { case OBJ_TAG: handle_tag(name, (struct tag *)object); break; case OBJ_COMMIT: + if (anonymize) + name = anonymize_refname(name); /* create refs pointing to already seen commits */ commit = (struct commit *)object; printf("reset %s\nfrom :%d\n\n", name, @@ -542,7 +880,7 @@ static void export_marks(char *file) FILE *f; int e = 0; - f = fopen(file, "w"); + f = fopen_for_writing(file); if (!f) die_errno("Unable to open marks file %s for writing.", file); @@ -550,7 +888,7 @@ static void export_marks(char *file) if (deco->base && deco->base->type == 1) { mark = ptr_to_mark(deco->decoration); if (fprintf(f, ":%"PRIu32" %s\n", mark, - sha1_to_hex(deco->base->sha1)) < 0) { + oid_to_hex(&deco->base->oid)) < 0) { e = 1; break; } @@ -576,6 +914,8 @@ static void import_marks(char *input_file) char *line_end, *mark_end; unsigned char sha1[20]; struct object *object; + struct commit *commit; + enum object_type type; line_end = strchr(line, '\n'); if (line[0] != ':' || !line_end) @@ -584,52 +924,80 @@ static void import_marks(char *input_file) mark = strtoumax(line + 1, &mark_end, 10); if (!mark || mark_end == line + 1 - || *mark_end != ' ' || get_sha1(mark_end + 1, sha1)) + || *mark_end != ' ' || get_sha1_hex(mark_end + 1, sha1)) die("corrupt mark line: %s", line); - object = parse_object(sha1); - if (!object) - die ("Could not read blob %s", sha1_to_hex(sha1)); + if (last_idnum < mark) + last_idnum = mark; + + type = sha1_object_info(sha1, NULL); + if (type < 0) + die("object not found: %s", sha1_to_hex(sha1)); + + if (type != OBJ_COMMIT) + /* only commits */ + continue; + + commit = lookup_commit(sha1); + if (!commit) + die("not a commit? can't happen: %s", sha1_to_hex(sha1)); + + object = &commit->object; if (object->flags & SHOWN) - error("Object %s already has a mark", sha1); + error("Object %s already has a mark", sha1_to_hex(sha1)); mark_object(object, mark); - if (last_idnum < mark) - last_idnum = mark; object->flags |= SHOWN; } fclose(f); } +static void handle_deletes(void) +{ + int i; + for (i = 0; i < refspecs_nr; i++) { + struct refspec *refspec = &refspecs[i]; + if (*refspec->src) + continue; + + printf("reset %s\nfrom %s\n\n", + refspec->dst, sha1_to_hex(null_sha1)); + } +} + int cmd_fast_export(int argc, const char **argv, const char *prefix) { struct rev_info revs; struct object_array commits = OBJECT_ARRAY_INIT; - struct string_list extra_refs = STRING_LIST_INIT_NODUP; 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, - "show progress after <n> objects"), - OPT_CALLBACK(0, "signed-tags", &signed_tag_mode, "mode", - "select handling of signed tags", + N_("show progress after <n> objects")), + OPT_CALLBACK(0, "signed-tags", &signed_tag_mode, N_("mode"), + N_("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", + OPT_CALLBACK(0, "tag-of-filtered-object", &tag_of_filtered_mode, N_("mode"), + N_("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", - "Import marks from this file"), - OPT_BOOLEAN(0, "fake-missing-tagger", &fake_missing_tagger, - "Fake a tagger when tags lack one"), - OPT_BOOLEAN(0, "full-tree", &full_tree, - "Output full tree for each commit"), - { OPTION_NEGBIT, 0, "data", &no_data, NULL, - "Skip output of blob data", - PARSE_OPT_NOARG | PARSE_OPT_NEGHELP, NULL, 1 }, + OPT_STRING(0, "export-marks", &export_filename, N_("file"), + N_("Dump marks to this file")), + OPT_STRING(0, "import-marks", &import_filename, N_("file"), + N_("Import marks from this file")), + OPT_BOOL(0, "fake-missing-tagger", &fake_missing_tagger, + N_("Fake a tagger when tags lack one")), + OPT_BOOL(0, "full-tree", &full_tree, + N_("Output full tree for each commit")), + 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_BOOL(0, "anonymize", &anonymize, N_("anonymize output")), OPT_END() }; @@ -643,18 +1011,38 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix) revs.topo_order = 1; revs.show_source = 1; revs.rewrite_parents = 1; + argc = parse_options(argc, argv, prefix, options, fast_export_usage, + PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_UNKNOWN); argc = setup_revisions(argc, argv, &revs, NULL); - argc = parse_options(argc, argv, prefix, options, fast_export_usage, 0); if (argc > 1) usage_with_options (fast_export_usage, options); + if (refspecs_list.nr) { + const char **refspecs_str; + int i; + + ALLOC_ARRAY(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"); + if (import_filename) import_marks(import_filename); + lastimportid = last_idnum; - if (import_filename && revs.prune_data) + if (import_filename && revs.prune_data.nr) full_tree = 1; - get_tags_and_duplicates(&revs.pending, &extra_refs); + get_tags_and_duplicates(&revs.cmdline); if (prepare_revision_walk(&revs)) die("revision walk setup failed"); @@ -670,10 +1058,16 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix) } } - handle_tags_and_duplicates(&extra_refs); + handle_tags_and_duplicates(); + handle_deletes(); - if (export_filename) + if (export_filename && lastimportid != last_idnum) export_marks(export_filename); + if (use_done_feature) + printf("done\n"); + + free_refspec(refspecs_nr, refspecs); + return 0; } |