| /* |
| * Copyright (C) 2009-2011 the libgit2 contributors |
| * |
| * This file is part of libgit2, distributed under the GNU GPL v2 with |
| * a Linking Exception. For full terms see the included COPYING file. |
| */ |
| |
| #include "common.h" |
| #include "commit.h" |
| #include "tag.h" |
| #include "signature.h" |
| #include "git2/object.h" |
| #include "git2/repository.h" |
| #include "git2/signature.h" |
| |
| void git_tag__free(git_tag *tag) |
| { |
| git_signature_free(tag->tagger); |
| git__free(tag->message); |
| git__free(tag->tag_name); |
| git__free(tag); |
| } |
| |
| const git_oid *git_tag_id(git_tag *c) |
| { |
| return git_object_id((git_object *)c); |
| } |
| |
| int git_tag_target(git_object **target, git_tag *t) |
| { |
| assert(t); |
| return git_object_lookup(target, t->object.repo, &t->target, t->type); |
| } |
| |
| const git_oid *git_tag_target_oid(git_tag *t) |
| { |
| assert(t); |
| return &t->target; |
| } |
| |
| git_otype git_tag_type(git_tag *t) |
| { |
| assert(t); |
| return t->type; |
| } |
| |
| const char *git_tag_name(git_tag *t) |
| { |
| assert(t); |
| return t->tag_name; |
| } |
| |
| const git_signature *git_tag_tagger(git_tag *t) |
| { |
| return t->tagger; |
| } |
| |
| const char *git_tag_message(git_tag *t) |
| { |
| assert(t); |
| return t->message; |
| } |
| |
| static int parse_tag_buffer(git_tag *tag, const char *buffer, const char *buffer_end) |
| { |
| static const char *tag_types[] = { |
| NULL, "commit\n", "tree\n", "blob\n", "tag\n" |
| }; |
| |
| unsigned int i, text_len; |
| char *search; |
| int error; |
| |
| if ((error = git_oid__parse(&tag->target, &buffer, buffer_end, "object ")) < 0) |
| return git__rethrow(error, "Failed to parse tag. Object field invalid"); |
| |
| if (buffer + 5 >= buffer_end) |
| return git__throw(GIT_EOBJCORRUPTED, "Failed to parse tag. Object too short"); |
| |
| if (memcmp(buffer, "type ", 5) != 0) |
| return git__throw(GIT_EOBJCORRUPTED, "Failed to parse tag. Type field not found"); |
| buffer += 5; |
| |
| tag->type = GIT_OBJ_BAD; |
| |
| for (i = 1; i < ARRAY_SIZE(tag_types); ++i) { |
| size_t type_length = strlen(tag_types[i]); |
| |
| if (buffer + type_length >= buffer_end) |
| return git__throw(GIT_EOBJCORRUPTED, "Failed to parse tag. Object too short"); |
| |
| if (memcmp(buffer, tag_types[i], type_length) == 0) { |
| tag->type = i; |
| buffer += type_length; |
| break; |
| } |
| } |
| |
| if (tag->type == GIT_OBJ_BAD) |
| return git__throw(GIT_EOBJCORRUPTED, "Failed to parse tag. Invalid object type"); |
| |
| if (buffer + 4 >= buffer_end) |
| return git__throw(GIT_EOBJCORRUPTED, "Failed to parse tag. Object too short"); |
| |
| if (memcmp(buffer, "tag ", 4) != 0) |
| return git__throw(GIT_EOBJCORRUPTED, "Failed to parse tag. Tag field not found"); |
| |
| buffer += 4; |
| |
| search = memchr(buffer, '\n', buffer_end - buffer); |
| if (search == NULL) |
| return git__throw(GIT_EOBJCORRUPTED, "Failed to parse tag. Object too short"); |
| |
| text_len = search - buffer; |
| |
| tag->tag_name = git__malloc(text_len + 1); |
| if (tag->tag_name == NULL) |
| return GIT_ENOMEM; |
| |
| memcpy(tag->tag_name, buffer, text_len); |
| tag->tag_name[text_len] = '\0'; |
| |
| buffer = search + 1; |
| |
| tag->tagger = NULL; |
| if (*buffer != '\n') { |
| tag->tagger = git__malloc(sizeof(git_signature)); |
| if (tag->tagger == NULL) |
| return GIT_ENOMEM; |
| |
| if ((error = git_signature__parse(tag->tagger, &buffer, buffer_end, "tagger ", '\n') != 0)) { |
| return git__rethrow(error, "Failed to parse tag"); |
| } |
| } |
| |
| if( *buffer != '\n' ) |
| return git__throw(GIT_EOBJCORRUPTED, "Failed to parse tag. No new line before message"); |
| |
| text_len = buffer_end - ++buffer; |
| |
| tag->message = git__malloc(text_len + 1); |
| if (tag->message == NULL) |
| return GIT_ENOMEM; |
| |
| memcpy(tag->message, buffer, text_len); |
| tag->message[text_len] = '\0'; |
| |
| return GIT_SUCCESS; |
| } |
| |
| static int retrieve_tag_reference( |
| git_reference **tag_reference_out, |
| git_buf *ref_name_out, |
| git_repository *repo, |
| const char *tag_name) |
| { |
| git_reference *tag_ref; |
| int error; |
| |
| *tag_reference_out = NULL; |
| |
| error = git_buf_joinpath(ref_name_out, GIT_REFS_TAGS_DIR, tag_name); |
| if (error < GIT_SUCCESS) |
| return git__rethrow(error, "Failed to retrieve tag reference"); |
| |
| error = git_reference_lookup(&tag_ref, repo, ref_name_out->ptr); |
| if (error < GIT_SUCCESS) |
| return git__rethrow(error, "Failed to retrieve tag reference"); |
| |
| *tag_reference_out = tag_ref; |
| |
| return GIT_SUCCESS; |
| } |
| |
| static int write_tag_annotation( |
| git_oid *oid, |
| git_repository *repo, |
| const char *tag_name, |
| const git_object *target, |
| const git_signature *tagger, |
| const char *message) |
| { |
| int error = GIT_SUCCESS; |
| git_buf tag = GIT_BUF_INIT; |
| git_odb *odb; |
| |
| git_oid__writebuf(&tag, "object ", git_object_id(target)); |
| git_buf_printf(&tag, "type %s\n", git_object_type2string(git_object_type(target))); |
| git_buf_printf(&tag, "tag %s\n", tag_name); |
| git_signature__writebuf(&tag, "tagger ", tagger); |
| git_buf_putc(&tag, '\n'); |
| git_buf_puts(&tag, message); |
| |
| error = git_buf_lasterror(&tag); |
| if (error < GIT_SUCCESS) { |
| git_buf_free(&tag); |
| return git__rethrow(error, "Not enough memory to build the tag data"); |
| } |
| |
| error = git_repository_odb__weakptr(&odb, repo); |
| if (error < GIT_SUCCESS) { |
| git_buf_free(&tag); |
| return error; |
| } |
| |
| error = git_odb_write(oid, odb, tag.ptr, tag.size, GIT_OBJ_TAG); |
| git_buf_free(&tag); |
| |
| if (error < GIT_SUCCESS) |
| return git__rethrow(error, "Failed to create tag annotation"); |
| |
| return error; |
| } |
| |
| static int git_tag_create__internal( |
| git_oid *oid, |
| git_repository *repo, |
| const char *tag_name, |
| const git_object *target, |
| const git_signature *tagger, |
| const char *message, |
| int allow_ref_overwrite, |
| int create_tag_annotation) |
| { |
| git_reference *new_ref = NULL; |
| git_buf ref_name = GIT_BUF_INIT; |
| |
| int error, should_update_ref = 0; |
| const char *errmsg = "Failed to create tag"; |
| |
| assert(repo && tag_name && target); |
| assert(!create_tag_annotation || (tagger && message)); |
| |
| if (git_object_owner(target) != repo) |
| return git__throw(GIT_EINVALIDARGS, |
| "The given target does not belong to this repository"); |
| |
| error = retrieve_tag_reference(&new_ref, &ref_name, repo, tag_name); |
| if (error < GIT_SUCCESS && error != GIT_ENOTFOUND) |
| goto cleanup; |
| |
| /** Ensure the tag name doesn't conflict with an already existing |
| * reference unless overwriting has explictly been requested **/ |
| if (new_ref != NULL) { |
| if (!allow_ref_overwrite) { |
| git_oid_cpy(oid, git_reference_oid(new_ref)); |
| error = GIT_EEXISTS; |
| errmsg = "Tag already exists"; |
| goto cleanup; |
| } else { |
| should_update_ref = 1; |
| } |
| } |
| |
| if (create_tag_annotation) { |
| if ((error = write_tag_annotation(oid, repo, tag_name, target, tagger, message)) < GIT_SUCCESS) |
| goto cleanup; |
| } else |
| git_oid_cpy(oid, git_object_id(target)); |
| |
| if (!should_update_ref) |
| error = git_reference_create_oid(&new_ref, repo, ref_name.ptr, oid, 0); |
| else |
| error = git_reference_set_oid(new_ref, oid); |
| |
| cleanup: |
| git_reference_free(new_ref); |
| git_buf_free(&ref_name); |
| |
| if (error < GIT_SUCCESS) |
| git__rethrow(error, "%s", errmsg); |
| |
| return error; |
| } |
| |
| int git_tag_create( |
| git_oid *oid, |
| git_repository *repo, |
| const char *tag_name, |
| const git_object *target, |
| const git_signature *tagger, |
| const char *message, |
| int allow_ref_overwrite) |
| { |
| return git_tag_create__internal(oid, repo, tag_name, target, tagger, message, allow_ref_overwrite, 1); |
| } |
| |
| int git_tag_create_lightweight( |
| git_oid *oid, |
| git_repository *repo, |
| const char *tag_name, |
| const git_object *target, |
| int allow_ref_overwrite) |
| { |
| return git_tag_create__internal(oid, repo, tag_name, target, NULL, NULL, allow_ref_overwrite, 0); |
| } |
| |
| int git_tag_create_frombuffer(git_oid *oid, git_repository *repo, const char *buffer, int allow_ref_overwrite) |
| { |
| git_tag tag; |
| int error, should_update_ref = 0; |
| const char *errmsg = "Failed to create tag"; |
| git_odb *odb; |
| git_odb_stream *stream; |
| git_odb_object *target_obj; |
| |
| git_reference *new_ref = NULL; |
| git_buf ref_name = GIT_BUF_INIT; |
| |
| assert(oid && buffer); |
| |
| memset(&tag, 0, sizeof(tag)); |
| |
| error = git_repository_odb__weakptr(&odb, repo); |
| if (error < GIT_SUCCESS) |
| return error; |
| |
| /* validate the buffer */ |
| if ((error = parse_tag_buffer(&tag, buffer, buffer + strlen(buffer))) < GIT_SUCCESS) |
| goto cleanup; |
| |
| /* validate the target */ |
| if ((error = git_odb_read(&target_obj, odb, &tag.target)) < GIT_SUCCESS) |
| goto cleanup; |
| |
| if (tag.type != target_obj->raw.type) { |
| error = GIT_EINVALIDTYPE; |
| errmsg = "The type for the given target is invalid"; |
| goto cleanup; |
| } |
| |
| git_odb_object_free(target_obj); |
| |
| error = retrieve_tag_reference(&new_ref, &ref_name, repo, tag.tag_name); |
| if (error < GIT_SUCCESS && error != GIT_ENOTFOUND) |
| goto cleanup; |
| |
| /** Ensure the tag name doesn't conflict with an already existing |
| * reference unless overwriting has explictly been requested **/ |
| if (new_ref != NULL) { |
| if (!allow_ref_overwrite) { |
| git_oid_cpy(oid, git_reference_oid(new_ref)); |
| error = GIT_EEXISTS; |
| errmsg = "Tag already exists"; |
| goto cleanup; |
| } else { |
| should_update_ref = 1; |
| } |
| } |
| |
| /* write the buffer */ |
| if ((error = git_odb_open_wstream(&stream, odb, strlen(buffer), GIT_OBJ_TAG)) < GIT_SUCCESS) |
| goto cleanup; |
| |
| stream->write(stream, buffer, strlen(buffer)); |
| |
| error = stream->finalize_write(oid, stream); |
| stream->free(stream); |
| |
| if (error < GIT_SUCCESS) |
| goto cleanup; |
| |
| if (!should_update_ref) |
| error = git_reference_create_oid(&new_ref, repo, ref_name.ptr, oid, 0); |
| else |
| error = git_reference_set_oid(new_ref, oid); |
| |
| cleanup: |
| git_reference_free(new_ref); |
| git_signature_free(tag.tagger); |
| git__free(tag.tag_name); |
| git__free(tag.message); |
| git_buf_free(&ref_name); |
| |
| if (error < GIT_SUCCESS) |
| git__rethrow(error, "%s", errmsg); |
| |
| return error; |
| } |
| |
| int git_tag_delete(git_repository *repo, const char *tag_name) |
| { |
| int error; |
| git_reference *tag_ref; |
| git_buf ref_name = GIT_BUF_INIT; |
| |
| error = retrieve_tag_reference(&tag_ref, &ref_name, repo, tag_name); |
| |
| git_buf_free(&ref_name); |
| |
| if (error < GIT_SUCCESS) |
| return git__rethrow(error, "Failed to delete tag"); |
| |
| return git_reference_delete(tag_ref); |
| } |
| |
| int git_tag__parse(git_tag *tag, git_odb_object *obj) |
| { |
| assert(tag); |
| return parse_tag_buffer(tag, obj->raw.data, (char *)obj->raw.data + obj->raw.len); |
| } |
| |
| typedef struct { |
| git_vector *taglist; |
| const char *pattern; |
| } tag_filter_data; |
| |
| #define GIT_REFS_TAGS_DIR_LEN strlen(GIT_REFS_TAGS_DIR) |
| |
| static int tag_list_cb(const char *tag_name, void *payload) |
| { |
| tag_filter_data *filter; |
| |
| if (git__prefixcmp(tag_name, GIT_REFS_TAGS_DIR) != 0) |
| return GIT_SUCCESS; |
| |
| filter = (tag_filter_data *)payload; |
| if (!*filter->pattern || p_fnmatch(filter->pattern, tag_name + GIT_REFS_TAGS_DIR_LEN, 0) == GIT_SUCCESS) |
| return git_vector_insert(filter->taglist, git__strdup(tag_name)); |
| |
| return GIT_SUCCESS; |
| } |
| |
| int git_tag_list_match(git_strarray *tag_names, const char *pattern, git_repository *repo) |
| { |
| int error; |
| tag_filter_data filter; |
| git_vector taglist; |
| |
| assert(tag_names && repo && pattern); |
| |
| if (git_vector_init(&taglist, 8, NULL) < GIT_SUCCESS) |
| return GIT_ENOMEM; |
| |
| filter.taglist = &taglist; |
| filter.pattern = pattern; |
| |
| error = git_reference_foreach(repo, GIT_REF_OID|GIT_REF_PACKED, &tag_list_cb, (void *)&filter); |
| if (error < GIT_SUCCESS) { |
| git_vector_free(&taglist); |
| return git__rethrow(error, "Failed to list tags"); |
| } |
| |
| tag_names->strings = (char **)taglist.contents; |
| tag_names->count = taglist.length; |
| return GIT_SUCCESS; |
| } |
| |
| int git_tag_list(git_strarray *tag_names, git_repository *repo) |
| { |
| return git_tag_list_match(tag_names, "", repo); |
| } |