diff options
Diffstat (limited to 'src/tag.c')
| -rw-r--r-- | src/tag.c | 578 |
1 files changed, 0 insertions, 578 deletions
diff --git a/src/tag.c b/src/tag.c deleted file mode 100644 index f9b647439..000000000 --- a/src/tag.c +++ /dev/null @@ -1,578 +0,0 @@ -/* - * Copyright (C) the libgit2 contributors. All rights reserved. - * - * 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 "tag.h" - -#include "commit.h" -#include "signature.h" -#include "message.h" -#include "wildmatch.h" -#include "git2/object.h" -#include "git2/repository.h" -#include "git2/signature.h" -#include "git2/odb_backend.h" - -void git_tag__free(void *_tag) -{ - git_tag *tag = _tag; - git_signature_free(tag->tagger); - git__free(tag->message); - git__free(tag->tag_name); - git__free(tag); -} - -int git_tag_target(git_object **target, const git_tag *t) -{ - GIT_ASSERT_ARG(t); - return git_object_lookup(target, t->object.repo, &t->target, t->type); -} - -const git_oid *git_tag_target_id(const git_tag *t) -{ - GIT_ASSERT_ARG_WITH_RETVAL(t, NULL); - return &t->target; -} - -git_object_t git_tag_target_type(const git_tag *t) -{ - GIT_ASSERT_ARG_WITH_RETVAL(t, GIT_OBJECT_INVALID); - return t->type; -} - -const char *git_tag_name(const git_tag *t) -{ - GIT_ASSERT_ARG_WITH_RETVAL(t, NULL); - return t->tag_name; -} - -const git_signature *git_tag_tagger(const git_tag *t) -{ - return t->tagger; -} - -const char *git_tag_message(const git_tag *t) -{ - GIT_ASSERT_ARG_WITH_RETVAL(t, NULL); - return t->message; -} - -static int tag_error(const char *str) -{ - git_error_set(GIT_ERROR_TAG, "failed to parse tag: %s", str); - return -1; -} - -static int tag_parse(git_tag *tag, const char *buffer, const char *buffer_end) -{ - static const char *tag_types[] = { - NULL, "commit\n", "tree\n", "blob\n", "tag\n" - }; - size_t text_len, alloc_len; - const char *search; - unsigned int i; - - if (git_oid__parse(&tag->target, &buffer, buffer_end, "object ") < 0) - return tag_error("object field invalid"); - - if (buffer + 5 >= buffer_end) - return tag_error("object too short"); - - if (memcmp(buffer, "type ", 5) != 0) - return tag_error("type field not found"); - buffer += 5; - - tag->type = GIT_OBJECT_INVALID; - - for (i = 1; i < ARRAY_SIZE(tag_types); ++i) { - size_t type_length = strlen(tag_types[i]); - - if (buffer + type_length >= buffer_end) - return tag_error("object too short"); - - if (memcmp(buffer, tag_types[i], type_length) == 0) { - tag->type = i; - buffer += type_length; - break; - } - } - - if (tag->type == GIT_OBJECT_INVALID) - return tag_error("invalid object type"); - - if (buffer + 4 >= buffer_end) - return tag_error("object too short"); - - if (memcmp(buffer, "tag ", 4) != 0) - return tag_error("tag field not found"); - - buffer += 4; - - search = memchr(buffer, '\n', buffer_end - buffer); - if (search == NULL) - return tag_error("object too short"); - - text_len = search - buffer; - - GIT_ERROR_CHECK_ALLOC_ADD(&alloc_len, text_len, 1); - tag->tag_name = git__malloc(alloc_len); - GIT_ERROR_CHECK_ALLOC(tag->tag_name); - - memcpy(tag->tag_name, buffer, text_len); - tag->tag_name[text_len] = '\0'; - - buffer = search + 1; - - tag->tagger = NULL; - if (buffer < buffer_end && *buffer != '\n') { - tag->tagger = git__malloc(sizeof(git_signature)); - GIT_ERROR_CHECK_ALLOC(tag->tagger); - - if (git_signature__parse(tag->tagger, &buffer, buffer_end, "tagger ", '\n') < 0) - return -1; - } - - tag->message = NULL; - if (buffer < buffer_end) { - /* If we're not at the end of the header, search for it */ - if(*buffer != '\n') { - search = git__memmem(buffer, buffer_end - buffer, - "\n\n", 2); - if (search) - buffer = search + 1; - else - return tag_error("tag contains no message"); - } - - text_len = buffer_end - ++buffer; - - GIT_ERROR_CHECK_ALLOC_ADD(&alloc_len, text_len, 1); - tag->message = git__malloc(alloc_len); - GIT_ERROR_CHECK_ALLOC(tag->message); - - memcpy(tag->message, buffer, text_len); - tag->message[text_len] = '\0'; - } - - return 0; -} - -int git_tag__parse_raw(void *_tag, const char *data, size_t size) -{ - return tag_parse(_tag, data, data + size); -} - -int git_tag__parse(void *_tag, git_odb_object *odb_obj) -{ - git_tag *tag = _tag; - const char *buffer = git_odb_object_data(odb_obj); - const char *buffer_end = buffer + git_odb_object_size(odb_obj); - - return tag_parse(tag, buffer, buffer_end); -} - -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; - - if (git_buf_joinpath(ref_name_out, GIT_REFS_TAGS_DIR, tag_name) < 0) - return -1; - - error = git_reference_lookup(&tag_ref, repo, ref_name_out->ptr); - if (error < 0) - return error; /* Be it not foundo or corrupted */ - - *tag_reference_out = tag_ref; - - return 0; -} - -static int retrieve_tag_reference_oid( - git_oid *oid, - git_buf *ref_name_out, - git_repository *repo, - const char *tag_name) -{ - if (git_buf_joinpath(ref_name_out, GIT_REFS_TAGS_DIR, tag_name) < 0) - return -1; - - return git_reference_name_to_id(oid, repo, ref_name_out->ptr); -} - -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) -{ - 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'); - - if (git_buf_puts(&tag, message) < 0) - goto on_error; - - if (git_repository_odb__weakptr(&odb, repo) < 0) - goto on_error; - - if (git_odb_write(oid, odb, tag.ptr, tag.size, GIT_OBJECT_TAG) < 0) - goto on_error; - - git_buf_dispose(&tag); - return 0; - -on_error: - git_buf_dispose(&tag); - git_error_set(GIT_ERROR_OBJECT, "failed to create tag annotation"); - return -1; -} - -static bool tag_name_follows_pattern(const char *tag_name) -{ - /* - * Discourage tag name starting with dash, - * https://github.com/git/git/commit/4f0accd638b8d2 - */ - return tag_name[0] != '-'; -} - -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; - - GIT_ASSERT_ARG(repo); - GIT_ASSERT_ARG(tag_name); - GIT_ASSERT_ARG(target); - GIT_ASSERT_ARG(!create_tag_annotation || (tagger && message)); - - if (git_object_owner(target) != repo) { - git_error_set(GIT_ERROR_INVALID, "the given target does not belong to this repository"); - return -1; - } - - if (!tag_name_follows_pattern(tag_name)) { - git_error_set(GIT_ERROR_TAG, "'%s' is not a valid tag name", tag_name); - return -1; - } - - error = retrieve_tag_reference_oid(oid, &ref_name, repo, tag_name); - if (error < 0 && error != GIT_ENOTFOUND) - goto cleanup; - - /** Ensure the tag name doesn't conflict with an already existing - * reference unless overwriting has explicitly been requested **/ - if (error == 0 && !allow_ref_overwrite) { - git_buf_dispose(&ref_name); - git_error_set(GIT_ERROR_TAG, "tag already exists"); - return GIT_EEXISTS; - } - - if (create_tag_annotation) { - if (write_tag_annotation(oid, repo, tag_name, target, tagger, message) < 0) - return -1; - } else - git_oid_cpy(oid, git_object_id(target)); - - error = git_reference_create(&new_ref, repo, ref_name.ptr, oid, allow_ref_overwrite, NULL); - -cleanup: - git_reference_free(new_ref); - git_buf_dispose(&ref_name); - 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_annotation_create( - git_oid *oid, - git_repository *repo, - const char *tag_name, - const git_object *target, - const git_signature *tagger, - const char *message) -{ - GIT_ASSERT_ARG(oid); - GIT_ASSERT_ARG(repo); - GIT_ASSERT_ARG(tag_name); - GIT_ASSERT_ARG(target); - GIT_ASSERT_ARG(tagger); - GIT_ASSERT_ARG(message); - - return write_tag_annotation(oid, repo, tag_name, target, tagger, message); -} - -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_from_buffer(git_oid *oid, git_repository *repo, const char *buffer, int allow_ref_overwrite) -{ - git_tag tag; - int error; - git_odb *odb; - git_odb_stream *stream; - git_odb_object *target_obj; - - git_reference *new_ref = NULL; - git_buf ref_name = GIT_BUF_INIT; - - GIT_ASSERT_ARG(oid); - GIT_ASSERT_ARG(buffer); - - memset(&tag, 0, sizeof(tag)); - - if (git_repository_odb__weakptr(&odb, repo) < 0) - return -1; - - /* validate the buffer */ - if (tag_parse(&tag, buffer, buffer + strlen(buffer)) < 0) - return -1; - - /* validate the target */ - if (git_odb_read(&target_obj, odb, &tag.target) < 0) - goto on_error; - - if (tag.type != target_obj->cached.type) { - git_error_set(GIT_ERROR_TAG, "the type for the given target is invalid"); - goto on_error; - } - - error = retrieve_tag_reference_oid(oid, &ref_name, repo, tag.tag_name); - if (error < 0 && error != GIT_ENOTFOUND) - goto on_error; - - /* We don't need these objects after this */ - git_signature_free(tag.tagger); - git__free(tag.tag_name); - git__free(tag.message); - git_odb_object_free(target_obj); - - /** Ensure the tag name doesn't conflict with an already existing - * reference unless overwriting has explicitly been requested **/ - if (error == 0 && !allow_ref_overwrite) { - git_error_set(GIT_ERROR_TAG, "tag already exists"); - return GIT_EEXISTS; - } - - /* write the buffer */ - if ((error = git_odb_open_wstream( - &stream, odb, strlen(buffer), GIT_OBJECT_TAG)) < 0) - return error; - - if (!(error = git_odb_stream_write(stream, buffer, strlen(buffer)))) - error = git_odb_stream_finalize_write(oid, stream); - - git_odb_stream_free(stream); - - if (error < 0) { - git_buf_dispose(&ref_name); - return error; - } - - error = git_reference_create( - &new_ref, repo, ref_name.ptr, oid, allow_ref_overwrite, NULL); - - git_reference_free(new_ref); - git_buf_dispose(&ref_name); - - return error; - -on_error: - git_signature_free(tag.tagger); - git__free(tag.tag_name); - git__free(tag.message); - git_odb_object_free(target_obj); - return -1; -} - -int git_tag_delete(git_repository *repo, const char *tag_name) -{ - git_reference *tag_ref; - git_buf ref_name = GIT_BUF_INIT; - int error; - - error = retrieve_tag_reference(&tag_ref, &ref_name, repo, tag_name); - - git_buf_dispose(&ref_name); - - if (error < 0) - return error; - - error = git_reference_delete(tag_ref); - - git_reference_free(tag_ref); - - return error; -} - -typedef struct { - git_repository *repo; - git_tag_foreach_cb cb; - void *cb_data; -} tag_cb_data; - -static int tags_cb(const char *ref, void *data) -{ - int error; - git_oid oid; - tag_cb_data *d = (tag_cb_data *)data; - - if (git__prefixcmp(ref, GIT_REFS_TAGS_DIR) != 0) - return 0; /* no tag */ - - if (!(error = git_reference_name_to_id(&oid, d->repo, ref))) { - if ((error = d->cb(ref, &oid, d->cb_data)) != 0) - git_error_set_after_callback_function(error, "git_tag_foreach"); - } - - return error; -} - -int git_tag_foreach(git_repository *repo, git_tag_foreach_cb cb, void *cb_data) -{ - tag_cb_data data; - - GIT_ASSERT_ARG(repo); - GIT_ASSERT_ARG(cb); - - data.cb = cb; - data.cb_data = cb_data; - data.repo = repo; - - return git_reference_foreach_name(repo, &tags_cb, &data); -} - -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, git_oid *oid, void *data) -{ - tag_filter_data *filter = (tag_filter_data *)data; - GIT_UNUSED(oid); - - if (!*filter->pattern || - wildmatch(filter->pattern, tag_name + GIT_REFS_TAGS_DIR_LEN, 0) == 0) - { - char *matched = git__strdup(tag_name + GIT_REFS_TAGS_DIR_LEN); - GIT_ERROR_CHECK_ALLOC(matched); - - return git_vector_insert(filter->taglist, matched); - } - - return 0; -} - -int git_tag_list_match(git_strarray *tag_names, const char *pattern, git_repository *repo) -{ - int error; - tag_filter_data filter; - git_vector taglist; - - GIT_ASSERT_ARG(tag_names); - GIT_ASSERT_ARG(repo); - GIT_ASSERT_ARG(pattern); - - if ((error = git_vector_init(&taglist, 8, NULL)) < 0) - return error; - - filter.taglist = &taglist; - filter.pattern = pattern; - - error = git_tag_foreach(repo, &tag_list_cb, (void *)&filter); - - if (error < 0) - git_vector_free(&taglist); - - tag_names->strings = - (char **)git_vector_detach(&tag_names->count, NULL, &taglist); - - return 0; -} - -int git_tag_list(git_strarray *tag_names, git_repository *repo) -{ - return git_tag_list_match(tag_names, "", repo); -} - -int git_tag_peel(git_object **tag_target, const git_tag *tag) -{ - return git_object_peel(tag_target, (const git_object *)tag, GIT_OBJECT_ANY); -} - -int git_tag_name_is_valid(int *valid, const char *name) -{ - git_buf ref_name = GIT_BUF_INIT; - int error = 0; - - GIT_ASSERT(valid); - - if (!name || !tag_name_follows_pattern(name)) - goto done; - - if ((error = git_buf_puts(&ref_name, GIT_REFS_TAGS_DIR)) < 0 || - (error = git_buf_puts(&ref_name, name)) < 0) - goto done; - - error = git_reference_name_is_valid(valid, ref_name.ptr); - -done: - git_buf_dispose(&ref_name); - return error; -} - -/* Deprecated Functions */ - -#ifndef GIT_DEPRECATE_HARD -int git_tag_create_frombuffer(git_oid *oid, git_repository *repo, const char *buffer, int allow_ref_overwrite) -{ - return git_tag_create_from_buffer(oid, repo, buffer, allow_ref_overwrite); -} -#endif |