X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=builtin-fast-export.c;h=fdf4ae9ebdba7832a0ac736d56a7b564bba41baa;hb=a797b02f3925c4a6324472e2edaf4a58d4ffc097;hp=4ab93fcf780c100f9af3bb6d4ddf3cbe86f73b3d;hpb=92798702cf6d201f80e257a07d0a0c40565c79fe;p=git.git diff --git a/builtin-fast-export.c b/builtin-fast-export.c index 4ab93fcf7..fdf4ae9eb 100644 --- a/builtin-fast-export.c +++ b/builtin-fast-export.c @@ -13,17 +13,18 @@ #include "log-tree.h" #include "revision.h" #include "decorate.h" -#include "path-list.h" +#include "string-list.h" #include "utf8.h" #include "parse-options.h" static const char *fast_export_usage[] = { - "git-fast-export [rev-list-opts]", + "git fast-export [rev-list-opts]", NULL }; static int progress; static enum { VERBATIM, WARN, STRIP, ABORT } signed_tag_mode = ABORT; +static int fake_missing_tagger; static int parse_opt_signed_tag_mode(const struct option *opt, const char *arg, int unset) @@ -56,10 +57,24 @@ static int has_unshown_parent(struct commit *commit) } /* Since intptr_t is C99, we do not use it here */ -static void mark_object(struct object *object) +static inline uint32_t *mark_to_ptr(uint32_t mark) { - last_idnum++; - add_decoration(&idnums, object, ((uint32_t *)NULL) + last_idnum); + return ((uint32_t *)NULL) + mark; +} + +static inline uint32_t ptr_to_mark(void * mark) +{ + return (uint32_t *)mark - (uint32_t *)NULL; +} + +static inline void mark_object(struct object *object, uint32_t mark) +{ + add_decoration(&idnums, object, mark_to_ptr(mark)); +} + +static inline void mark_next_object(struct object *object) +{ + mark_object(object, ++last_idnum); } static int get_object_mark(struct object *object) @@ -67,7 +82,7 @@ static int get_object_mark(struct object *object) void *decoration = lookup_decoration(&idnums, object); if (!decoration) return 0; - return (uint32_t *)decoration - (uint32_t *)NULL; + return ptr_to_mark(decoration); } static void show_progress(void) @@ -100,9 +115,9 @@ static void handle_object(const unsigned char *sha1) if (!buf) die ("Could not read blob %s", sha1_to_hex(sha1)); - mark_object(object); + mark_next_object(object); - printf("blob\nmark :%d\ndata %lu\n", last_idnum, size); + printf("blob\nmark :%"PRIu32"\ndata %lu\n", last_idnum, size); if (size && fwrite(buf, size, 1, stdout) != 1) die ("Could not write blob %s", sha1_to_hex(sha1)); printf("\n"); @@ -118,13 +133,46 @@ static void show_filemodify(struct diff_queue_struct *q, { int i; for (i = 0; i < q->nr; i++) { + struct diff_filespec *ospec = q->queue[i]->one; struct diff_filespec *spec = q->queue[i]->two; - if (is_null_sha1(spec->sha1)) + + switch (q->queue[i]->status) { + case DIFF_STATUS_DELETED: printf("D %s\n", spec->path); - else { - struct object *object = lookup_object(spec->sha1); - printf("M %06o :%d %s\n", spec->mode, - get_object_mark(object), spec->path); + break; + + case DIFF_STATUS_COPIED: + case DIFF_STATUS_RENAMED: + printf("%c \"%s\" \"%s\"\n", q->queue[i]->status, + ospec->path, spec->path); + + if (!hashcmp(ospec->sha1, spec->sha1) && + ospec->mode == spec->mode) + break; + /* fallthrough */ + + case DIFF_STATUS_TYPE_CHANGED: + case DIFF_STATUS_MODIFIED: + case DIFF_STATUS_ADDED: + /* + * Links refer to objects in another repositories; + * output the SHA-1 verbatim. + */ + if (S_ISGITLINK(spec->mode)) + printf("M %06o %s %s\n", spec->mode, + sha1_to_hex(spec->sha1), spec->path); + else { + struct object *object = lookup_object(spec->sha1); + printf("M %06o :%d %s\n", spec->mode, + get_object_mark(object), spec->path); + } + break; + + default: + die("Unexpected comparison status '%c' for %s, %s", + q->queue[i]->status, + ospec->path ? ospec->path : "none", + spec->path ? spec->path : "none"); } } } @@ -182,13 +230,17 @@ static void handle_commit(struct commit *commit, struct rev_info *rev) diff_root_tree_sha1(commit->tree->object.sha1, "", &rev->diffopt); + /* Export the referenced blobs, and remember the marks. */ for (i = 0; i < diff_queued_diff.nr; i++) - handle_object(diff_queued_diff.queue[i]->two->sha1); + if (!S_ISGITLINK(diff_queued_diff.queue[i]->two->mode)) + handle_object(diff_queued_diff.queue[i]->two->sha1); - mark_object(&commit->object); + mark_next_object(&commit->object); if (!is_encoding_utf8(encoding)) reencoded = reencode_string(message, "UTF-8", encoding); - printf("commit %s\nmark :%d\n%.*s\n%.*s\ndata %u\n%s", + if (!commit->parents) + printf("reset %s\n", (const char*)commit->util); + printf("commit %s\nmark :%"PRIu32"\n%.*s\n%.*s\ndata %u\n%s", (const char *)commit->util, last_idnum, (int)(author_end - author), author, (int)(committer_end - committer), committer, @@ -246,10 +298,17 @@ static void handle_tag(const char *name, struct tag *tag) message_size = strlen(message); } tagger = memmem(buf, message ? message - buf : size, "\ntagger ", 8); - if (!tagger) - die ("No tagger for tag %s", sha1_to_hex(tag->object.sha1)); - tagger++; - tagger_end = strchrnul(tagger, '\n'); + if (!tagger) { + if (fake_missing_tagger) + tagger = "tagger Unspecified Tagger " + " 0 +0000"; + else + tagger = ""; + tagger_end = tagger + strlen(tagger); + } else { + tagger++; + tagger_end = strchrnul(tagger, '\n'); + } /* handle signed tags */ if (message) { @@ -275,14 +334,15 @@ static void handle_tag(const char *name, struct tag *tag) if (!prefixcmp(name, "refs/tags/")) name += 10; - printf("tag %s\nfrom :%d\n%.*s\ndata %d\n%.*s\n", + printf("tag %s\nfrom :%d\n%.*s%sdata %d\n%.*s\n", name, get_object_mark(tag->tagged), (int)(tagger_end - tagger), tagger, + tagger == tagger_end ? "" : "\n", (int)message_size, (int)message_size, message ? message : ""); } static void get_tags_and_duplicates(struct object_array *pending, - struct path_list *extra_refs) + struct string_list *extra_refs) { struct tag *tag; int i; @@ -303,7 +363,7 @@ static void get_tags_and_duplicates(struct object_array *pending, case OBJ_TAG: tag = (struct tag *)e->item; while (tag && tag->object.type == OBJ_TAG) { - path_list_insert(full_name, extra_refs)->util = tag; + string_list_append(full_name, extra_refs)->util = tag; tag = (struct tag *)tag->tagged; } if (!tag) @@ -323,19 +383,19 @@ static void get_tags_and_duplicates(struct object_array *pending, } if (commit->util) /* more than one name for the same object */ - path_list_insert(full_name, extra_refs)->util = commit; + string_list_append(full_name, extra_refs)->util = commit; else commit->util = full_name; } } -static void handle_tags_and_duplicates(struct path_list *extra_refs) +static void handle_tags_and_duplicates(struct string_list *extra_refs) { struct commit *commit; int i; for (i = extra_refs->nr - 1; i >= 0; i--) { - const char *name = extra_refs->items[i].path; + const char *name = extra_refs->items[i].string; struct object *object = extra_refs->items[i].util; switch (object->type) { case OBJ_TAG: @@ -352,23 +412,96 @@ static void handle_tags_and_duplicates(struct path_list *extra_refs) } } +static void export_marks(char *file) +{ + unsigned int i; + uint32_t mark; + struct object_decoration *deco = idnums.hash; + FILE *f; + + f = fopen(file, "w"); + if (!f) + error("Unable to open marks file %s for writing", file); + + for (i = 0; i < idnums.size; i++) { + if (deco->base && deco->base->type == 1) { + mark = ptr_to_mark(deco->decoration); + fprintf(f, ":%"PRIu32" %s\n", mark, + sha1_to_hex(deco->base->sha1)); + } + deco++; + } + + if (ferror(f) || fclose(f)) + error("Unable to write marks file %s.", file); +} + +static void import_marks(char *input_file) +{ + char line[512]; + FILE *f = fopen(input_file, "r"); + if (!f) + die("cannot read %s: %s", input_file, strerror(errno)); + + while (fgets(line, sizeof(line), f)) { + uint32_t mark; + char *line_end, *mark_end; + unsigned char sha1[20]; + struct object *object; + + line_end = strchr(line, '\n'); + if (line[0] != ':' || !line_end) + die("corrupt mark line: %s", line); + *line_end = '\0'; + + mark = strtoumax(line + 1, &mark_end, 10); + if (!mark || mark_end == line + 1 + || *mark_end != ' ' || get_sha1(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 (object->flags & SHOWN) + error("Object %s already has a mark", sha1); + + mark_object(object, mark); + if (last_idnum < mark) + last_idnum = mark; + + object->flags |= SHOWN; + } + fclose(f); +} + int cmd_fast_export(int argc, const char **argv, const char *prefix) { struct rev_info revs; struct object_array commits = { 0, 0, NULL }; - struct path_list extra_refs = { NULL, 0, 0, 0 }; + struct string_list extra_refs = { NULL, 0, 0, 0 }; struct commit *commit; + char *export_filename = NULL, *import_filename = NULL; struct option options[] = { OPT_INTEGER(0, "progress", &progress, "show progress after objects"), OPT_CALLBACK(0, "signed-tags", &signed_tag_mode, "mode", "select handling of signed tags", parse_opt_signed_tag_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_END() }; + if (argc == 1) + usage_with_options (fast_export_usage, options); + /* we handle encodings */ - git_config(git_default_config); + git_config(git_default_config, NULL); init_revisions(&revs, prefix); argc = setup_revisions(argc, argv, &revs, NULL); @@ -376,8 +509,12 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix) if (argc > 1) usage_with_options (fast_export_usage, options); + if (import_filename) + import_marks(import_filename); + 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; @@ -398,5 +535,8 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix) handle_tags_and_duplicates(&extra_refs); + if (export_filename) + export_marks(export_filename); + return 0; }