diff options
Diffstat (limited to 'src/tag.c')
-rw-r--r-- | src/tag.c | 273 |
1 files changed, 146 insertions, 127 deletions
@@ -1,5 +1,5 @@ /* - * Copyright (C) 2009-2011 the libgit2 contributors + * Copyright (C) 2009-2012 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. @@ -9,6 +9,7 @@ #include "commit.h" #include "tag.h" #include "signature.h" +#include "message.h" #include "git2/object.h" #include "git2/repository.h" #include "git2/signature.h" @@ -61,24 +62,32 @@ const char *git_tag_message(git_tag *t) return t->message; } -static int parse_tag_buffer(git_tag *tag, const char *buffer, const char *buffer_end) +static int tag_error(const char *str) +{ + giterr_set(GITERR_TAG, "Failed to parse tag. %s", str); + return -1; +} + +int git_tag__parse_buffer(git_tag *tag, const char *buffer, size_t length) { static const char *tag_types[] = { NULL, "commit\n", "tree\n", "blob\n", "tag\n" }; - unsigned int i, text_len; + unsigned int i; + size_t 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"); + const char *buffer_end = buffer + length; + + if (git_oid__parse(&tag->target, &buffer, buffer_end, "object ") < 0) + return tag_error("Object field invalid"); if (buffer + 5 >= buffer_end) - return git__throw(GIT_EOBJCORRUPTED, "Failed to parse tag. Object too short"); + return tag_error("Object too short"); if (memcmp(buffer, "type ", 5) != 0) - return git__throw(GIT_EOBJCORRUPTED, "Failed to parse tag. Type field not found"); + return tag_error("Type field not found"); buffer += 5; tag->type = GIT_OBJ_BAD; @@ -87,7 +96,7 @@ static int parse_tag_buffer(git_tag *tag, const char *buffer, const char *buffer 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"); + return tag_error("Object too short"); if (memcmp(buffer, tag_types[i], type_length) == 0) { tag->type = i; @@ -97,25 +106,24 @@ static int parse_tag_buffer(git_tag *tag, const char *buffer, const char *buffer } if (tag->type == GIT_OBJ_BAD) - return git__throw(GIT_EOBJCORRUPTED, "Failed to parse tag. Invalid object type"); + return tag_error("Invalid object type"); if (buffer + 4 >= buffer_end) - return git__throw(GIT_EOBJCORRUPTED, "Failed to parse tag. Object too short"); + return tag_error("Object too short"); if (memcmp(buffer, "tag ", 4) != 0) - return git__throw(GIT_EOBJCORRUPTED, "Failed to parse tag. Tag field not found"); + return tag_error("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"); + return tag_error("Object too short"); text_len = search - buffer; tag->tag_name = git__malloc(text_len + 1); - if (tag->tag_name == NULL) - return GIT_ENOMEM; + GITERR_CHECK_ALLOC(tag->tag_name); memcpy(tag->tag_name, buffer, text_len); tag->tag_name[text_len] = '\0'; @@ -125,27 +133,24 @@ static int parse_tag_buffer(git_tag *tag, const char *buffer, const char *buffer tag->tagger = NULL; if (*buffer != '\n') { tag->tagger = git__malloc(sizeof(git_signature)); - if (tag->tagger == NULL) - return GIT_ENOMEM; + GITERR_CHECK_ALLOC(tag->tagger); - if ((error = git_signature__parse(tag->tagger, &buffer, buffer_end, "tagger ", '\n') != 0)) { - return git__rethrow(error, "Failed to parse tag"); - } + if (git_signature__parse(tag->tagger, &buffer, buffer_end, "tagger ", '\n') < 0) + return -1; } if( *buffer != '\n' ) - return git__throw(GIT_EOBJCORRUPTED, "Failed to parse tag. No new line before message"); + return tag_error("No new line before message"); text_len = buffer_end - ++buffer; tag->message = git__malloc(text_len + 1); - if (tag->message == NULL) - return GIT_ENOMEM; + GITERR_CHECK_ALLOC(tag->message); memcpy(tag->message, buffer, text_len); tag->message[text_len] = '\0'; - return GIT_SUCCESS; + return 0; } static int retrieve_tag_reference( @@ -159,17 +164,28 @@ static int retrieve_tag_reference( *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"); + 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 < GIT_SUCCESS) - return git__rethrow(error, "Failed to retrieve tag reference"); + if (error < 0) + return error; /* Be it not foundo or corrupted */ *tag_reference_out = tag_ref; - return GIT_SUCCESS; + 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_oid(oid, repo, ref_name_out->ptr); } static int write_tag_annotation( @@ -180,8 +196,7 @@ static int write_tag_annotation( const git_signature *tagger, const char *message) { - int error = GIT_SUCCESS; - git_buf tag = GIT_BUF_INIT; + git_buf tag = GIT_BUF_INIT, cleaned_message = GIT_BUF_INIT; git_odb *odb; git_oid__writebuf(&tag, "object ", git_object_id(target)); @@ -189,27 +204,30 @@ static int write_tag_annotation( 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"); - } + /* Remove comments by default */ + if (git_message_prettify(&cleaned_message, message, 1) < 0) + goto on_error; - error = git_repository_odb__weakptr(&odb, repo); - if (error < GIT_SUCCESS) { - git_buf_free(&tag); - return error; - } + if (git_buf_puts(&tag, git_buf_cstr(&cleaned_message)) < 0) + goto on_error; - error = git_odb_write(oid, odb, tag.ptr, tag.size, GIT_OBJ_TAG); - git_buf_free(&tag); + git_buf_free(&cleaned_message); - if (error < GIT_SUCCESS) - return git__rethrow(error, "Failed to create tag annotation"); + if (git_repository_odb__weakptr(&odb, repo) < 0) + goto on_error; - return error; + if (git_odb_write(oid, odb, tag.ptr, tag.size, GIT_OBJ_TAG) < 0) + goto on_error; + + git_buf_free(&tag); + return 0; + +on_error: + git_buf_free(&tag); + git_buf_free(&cleaned_message); + giterr_set(GITERR_OBJECT, "Failed to create tag annotation."); + return -1; } static int git_tag_create__internal( @@ -225,51 +243,38 @@ static int git_tag_create__internal( 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"; + int error; 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"); + if (git_object_owner(target) != repo) { + giterr_set(GITERR_INVALID, "The given target does not belong to this repository"); + return -1; + } - error = retrieve_tag_reference(&new_ref, &ref_name, repo, tag_name); - if (error < GIT_SUCCESS && error != GIT_ENOTFOUND) - goto cleanup; + error = retrieve_tag_reference_oid(oid, &ref_name, repo, tag_name); + if (error < 0 && error != GIT_ENOTFOUND) + return -1; /** 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 (error == 0 && !allow_ref_overwrite) { + git_buf_free(&ref_name); + giterr_set(GITERR_TAG, "Tag already exists"); + return GIT_EEXISTS; } if (create_tag_annotation) { - if ((error = write_tag_annotation(oid, repo, tag_name, target, tagger, message)) < GIT_SUCCESS) - goto cleanup; + if (write_tag_annotation(oid, repo, tag_name, target, tagger, message) < 0) + return -1; } 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); + error = git_reference_create_oid(&new_ref, repo, ref_name.ptr, oid, allow_ref_overwrite); -cleanup: git_reference_free(new_ref); git_buf_free(&ref_name); - - if (error < GIT_SUCCESS) - git__rethrow(error, "%s", errmsg); - return error; } @@ -298,8 +303,7 @@ int git_tag_create_lightweight( 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"; + int error; git_odb *odb; git_odb_stream *stream; git_odb_object *target_obj; @@ -311,71 +315,66 @@ int git_tag_create_frombuffer(git_oid *oid, git_repository *repo, const char *bu memset(&tag, 0, sizeof(tag)); - error = git_repository_odb__weakptr(&odb, repo); - if (error < GIT_SUCCESS) - return error; + if (git_repository_odb__weakptr(&odb, repo) < 0) + return -1; /* validate the buffer */ - if ((error = parse_tag_buffer(&tag, buffer, buffer + strlen(buffer))) < GIT_SUCCESS) - goto cleanup; + if (git_tag__parse_buffer(&tag, buffer, strlen(buffer)) < 0) + return -1; /* validate the target */ - if ((error = git_odb_read(&target_obj, odb, &tag.target)) < GIT_SUCCESS) - goto cleanup; + if (git_odb_read(&target_obj, odb, &tag.target) < 0) + goto on_error; if (tag.type != target_obj->raw.type) { - error = GIT_EINVALIDTYPE; - errmsg = "The type for the given target is invalid"; - goto cleanup; + giterr_set(GITERR_TAG, "The type for the given target is invalid"); + goto on_error; } - git_odb_object_free(target_obj); + error = retrieve_tag_reference_oid(oid, &ref_name, repo, tag.tag_name); + if (error < 0 && error != GIT_ENOTFOUND) + goto on_error; - error = retrieve_tag_reference(&new_ref, &ref_name, repo, tag.tag_name); - if (error < GIT_SUCCESS && error != GIT_ENOTFOUND) - goto cleanup; + /* 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 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 (error == 0 && !allow_ref_overwrite) { + giterr_set(GITERR_TAG, "Tag already exists"); + return GIT_EEXISTS; } /* write the buffer */ - if ((error = git_odb_open_wstream(&stream, odb, strlen(buffer), GIT_OBJ_TAG)) < GIT_SUCCESS) - goto cleanup; + if (git_odb_open_wstream(&stream, odb, strlen(buffer), GIT_OBJ_TAG) < 0) + return -1; stream->write(stream, buffer, strlen(buffer)); error = stream->finalize_write(oid, stream); stream->free(stream); - if (error < GIT_SUCCESS) - goto cleanup; + if (error < 0) { + git_buf_free(&ref_name); + return -1; + } - 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); + error = git_reference_create_oid(&new_ref, repo, ref_name.ptr, oid, allow_ref_overwrite); -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; + +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) @@ -388,8 +387,8 @@ int git_tag_delete(git_repository *repo, const char *tag_name) git_buf_free(&ref_name); - if (error < GIT_SUCCESS) - return git__rethrow(error, "Failed to delete tag"); + if (error < 0) + return -1; return git_reference_delete(tag_ref); } @@ -397,7 +396,7 @@ int git_tag_delete(git_repository *repo, const char *tag_name) 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); + return git_tag__parse_buffer(tag, obj->raw.data, obj->raw.len); } typedef struct { @@ -412,13 +411,13 @@ 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; + return 0; filter = (tag_filter_data *)payload; - if (!*filter->pattern || p_fnmatch(filter->pattern, tag_name + GIT_REFS_TAGS_DIR_LEN, 0) == GIT_SUCCESS) + if (!*filter->pattern || p_fnmatch(filter->pattern, tag_name + GIT_REFS_TAGS_DIR_LEN, 0) == 0) return git_vector_insert(filter->taglist, git__strdup(tag_name)); - return GIT_SUCCESS; + return 0; } int git_tag_list_match(git_strarray *tag_names, const char *pattern, git_repository *repo) @@ -429,24 +428,44 @@ int git_tag_list_match(git_strarray *tag_names, const char *pattern, git_reposit assert(tag_names && repo && pattern); - if (git_vector_init(&taglist, 8, NULL) < GIT_SUCCESS) - return GIT_ENOMEM; + if (git_vector_init(&taglist, 8, NULL) < 0) + return -1; 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) { + if (error < 0) { git_vector_free(&taglist); - return git__rethrow(error, "Failed to list tags"); + return -1; } tag_names->strings = (char **)taglist.contents; tag_names->count = taglist.length; - return GIT_SUCCESS; + 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, git_tag *tag) +{ + int error; + git_object *target; + + assert(tag_target && tag); + + if (git_tag_target(&target, tag) < 0) + return -1; + + if (git_object_type(target) == GIT_OBJ_TAG) { + error = git_tag_peel(tag_target, (git_tag *)target); + git_object_free(target); + return error; + } + + *tag_target = target; + return 0; +} |