| /* |
| * 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 "git2/common.h" |
| #include "git2/object.h" |
| #include "git2/repository.h" |
| #include "git2/signature.h" |
| #include "git2/sys/commit.h" |
| |
| #include "common.h" |
| #include "odb.h" |
| #include "commit.h" |
| #include "signature.h" |
| #include "message.h" |
| |
| #include <stdarg.h> |
| |
| void git_commit__free(void *_commit) |
| { |
| git_commit *commit = _commit; |
| |
| git_array_clear(commit->parent_ids); |
| |
| git_signature_free(commit->author); |
| git_signature_free(commit->committer); |
| |
| git__free(commit->raw_header); |
| git__free(commit->message); |
| git__free(commit->message_encoding); |
| |
| git__free(commit); |
| } |
| |
| int git_commit_create_v( |
| git_oid *oid, |
| git_repository *repo, |
| const char *update_ref, |
| const git_signature *author, |
| const git_signature *committer, |
| const char *message_encoding, |
| const char *message, |
| const git_tree *tree, |
| int parent_count, |
| ...) |
| { |
| va_list ap; |
| int i, res; |
| const git_commit **parents; |
| |
| parents = git__malloc(parent_count * sizeof(git_commit *)); |
| GITERR_CHECK_ALLOC(parents); |
| |
| va_start(ap, parent_count); |
| for (i = 0; i < parent_count; ++i) |
| parents[i] = va_arg(ap, const git_commit *); |
| va_end(ap); |
| |
| res = git_commit_create( |
| oid, repo, update_ref, author, committer, |
| message_encoding, message, |
| tree, parent_count, parents); |
| |
| git__free((void *)parents); |
| return res; |
| } |
| |
| int git_commit_create_from_oids( |
| git_oid *oid, |
| git_repository *repo, |
| const char *update_ref, |
| const git_signature *author, |
| const git_signature *committer, |
| const char *message_encoding, |
| const char *message, |
| const git_oid *tree, |
| int parent_count, |
| const git_oid *parents[]) |
| { |
| git_buf commit = GIT_BUF_INIT; |
| int i; |
| git_odb *odb; |
| |
| assert(oid && repo && tree && parent_count >= 0); |
| |
| git_oid__writebuf(&commit, "tree ", tree); |
| |
| for (i = 0; i < parent_count; ++i) |
| git_oid__writebuf(&commit, "parent ", parents[i]); |
| |
| git_signature__writebuf(&commit, "author ", author); |
| git_signature__writebuf(&commit, "committer ", committer); |
| |
| if (message_encoding != NULL) |
| git_buf_printf(&commit, "encoding %s\n", message_encoding); |
| |
| git_buf_putc(&commit, '\n'); |
| |
| if (git_buf_puts(&commit, message) < 0) |
| goto on_error; |
| |
| if (git_repository_odb__weakptr(&odb, repo) < 0) |
| goto on_error; |
| |
| if (git_odb_write(oid, odb, commit.ptr, commit.size, GIT_OBJ_COMMIT) < 0) |
| goto on_error; |
| |
| git_buf_free(&commit); |
| |
| if (update_ref != NULL) |
| return git_reference__update_terminal(repo, update_ref, oid); |
| |
| return 0; |
| |
| on_error: |
| git_buf_free(&commit); |
| giterr_set(GITERR_OBJECT, "Failed to create commit."); |
| return -1; |
| } |
| |
| int git_commit_create( |
| git_oid *oid, |
| git_repository *repo, |
| const char *update_ref, |
| const git_signature *author, |
| const git_signature *committer, |
| const char *message_encoding, |
| const char *message, |
| const git_tree *tree, |
| int parent_count, |
| const git_commit *parents[]) |
| { |
| int retval, i; |
| const git_oid **parent_oids; |
| |
| assert(parent_count >= 0); |
| assert(git_object_owner((const git_object *)tree) == repo); |
| |
| parent_oids = git__malloc(parent_count * sizeof(git_oid *)); |
| GITERR_CHECK_ALLOC(parent_oids); |
| |
| for (i = 0; i < parent_count; ++i) { |
| assert(git_object_owner((const git_object *)parents[i]) == repo); |
| parent_oids[i] = git_object_id((const git_object *)parents[i]); |
| } |
| |
| retval = git_commit_create_from_oids( |
| oid, repo, update_ref, author, committer, |
| message_encoding, message, |
| git_object_id((const git_object *)tree), parent_count, parent_oids); |
| |
| git__free((void *)parent_oids); |
| |
| return retval; |
| } |
| |
| int git_commit__parse(void *_commit, git_odb_object *odb_obj) |
| { |
| git_commit *commit = _commit; |
| const char *buffer_start = git_odb_object_data(odb_obj), *buffer; |
| const char *buffer_end = buffer_start + git_odb_object_size(odb_obj); |
| git_oid parent_id; |
| uint32_t parent_count = 0; |
| size_t header_len; |
| |
| /* find end-of-header (counting parents as we go) */ |
| for (buffer = buffer_start; buffer < buffer_end; ++buffer) { |
| if (!strncmp("\n\n", buffer, 2)) { |
| ++buffer; |
| break; |
| } |
| if (!strncmp("\nparent ", buffer, strlen("\nparent "))) |
| ++parent_count; |
| } |
| |
| header_len = buffer - buffer_start; |
| commit->raw_header = git__strndup(buffer_start, header_len); |
| GITERR_CHECK_ALLOC(commit->raw_header); |
| |
| /* point "buffer" to header data */ |
| buffer = commit->raw_header; |
| buffer_end = commit->raw_header + header_len; |
| |
| if (parent_count < 1) |
| parent_count = 1; |
| |
| git_array_init_to_size(commit->parent_ids, parent_count); |
| GITERR_CHECK_ARRAY(commit->parent_ids); |
| |
| if (git_oid__parse(&commit->tree_id, &buffer, buffer_end, "tree ") < 0) |
| goto bad_buffer; |
| |
| /* |
| * TODO: commit grafts! |
| */ |
| |
| while (git_oid__parse(&parent_id, &buffer, buffer_end, "parent ") == 0) { |
| git_oid *new_id = git_array_alloc(commit->parent_ids); |
| GITERR_CHECK_ALLOC(new_id); |
| |
| git_oid_cpy(new_id, &parent_id); |
| } |
| |
| commit->author = git__malloc(sizeof(git_signature)); |
| GITERR_CHECK_ALLOC(commit->author); |
| |
| if (git_signature__parse(commit->author, &buffer, buffer_end, "author ", '\n') < 0) |
| return -1; |
| |
| /* Always parse the committer; we need the commit time */ |
| commit->committer = git__malloc(sizeof(git_signature)); |
| GITERR_CHECK_ALLOC(commit->committer); |
| |
| if (git_signature__parse(commit->committer, &buffer, buffer_end, "committer ", '\n') < 0) |
| return -1; |
| |
| /* Parse add'l header entries */ |
| while (buffer < buffer_end) { |
| const char *eoln = buffer; |
| while (eoln < buffer_end && *eoln != '\n') |
| ++eoln; |
| |
| if (git__prefixcmp(buffer, "encoding ") == 0) { |
| buffer += strlen("encoding "); |
| |
| commit->message_encoding = git__strndup(buffer, eoln - buffer); |
| GITERR_CHECK_ALLOC(commit->message_encoding); |
| } |
| |
| if (eoln < buffer_end && *eoln == '\n') |
| ++eoln; |
| buffer = eoln; |
| } |
| |
| /* point "buffer" to data after header */ |
| buffer = git_odb_object_data(odb_obj); |
| buffer_end = buffer + git_odb_object_size(odb_obj); |
| |
| buffer += header_len; |
| if (*buffer == '\n') |
| ++buffer; |
| |
| /* extract commit message */ |
| if (buffer <= buffer_end) { |
| commit->message = git__strndup(buffer, buffer_end - buffer); |
| GITERR_CHECK_ALLOC(commit->message); |
| } |
| |
| return 0; |
| |
| bad_buffer: |
| giterr_set(GITERR_OBJECT, "Failed to parse bad commit object"); |
| return -1; |
| } |
| |
| #define GIT_COMMIT_GETTER(_rvalue, _name, _return) \ |
| _rvalue git_commit_##_name(const git_commit *commit) \ |
| {\ |
| assert(commit); \ |
| return _return; \ |
| } |
| |
| GIT_COMMIT_GETTER(const git_signature *, author, commit->author) |
| GIT_COMMIT_GETTER(const git_signature *, committer, commit->committer) |
| GIT_COMMIT_GETTER(const char *, message, commit->message) |
| GIT_COMMIT_GETTER(const char *, message_encoding, commit->message_encoding) |
| GIT_COMMIT_GETTER(const char *, raw_header, commit->raw_header) |
| GIT_COMMIT_GETTER(git_time_t, time, commit->committer->when.time) |
| GIT_COMMIT_GETTER(int, time_offset, commit->committer->when.offset) |
| GIT_COMMIT_GETTER(unsigned int, parentcount, (unsigned int)git_array_size(commit->parent_ids)) |
| GIT_COMMIT_GETTER(const git_oid *, tree_id, &commit->tree_id); |
| |
| int git_commit_tree(git_tree **tree_out, const git_commit *commit) |
| { |
| assert(commit); |
| return git_tree_lookup(tree_out, commit->object.repo, &commit->tree_id); |
| } |
| |
| const git_oid *git_commit_parent_id( |
| const git_commit *commit, unsigned int n) |
| { |
| assert(commit); |
| |
| return git_array_get(commit->parent_ids, n); |
| } |
| |
| int git_commit_parent( |
| git_commit **parent, const git_commit *commit, unsigned int n) |
| { |
| const git_oid *parent_id; |
| assert(commit); |
| |
| parent_id = git_commit_parent_id(commit, n); |
| if (parent_id == NULL) { |
| giterr_set(GITERR_INVALID, "Parent %u does not exist", n); |
| return GIT_ENOTFOUND; |
| } |
| |
| return git_commit_lookup(parent, commit->object.repo, parent_id); |
| } |
| |
| int git_commit_nth_gen_ancestor( |
| git_commit **ancestor, |
| const git_commit *commit, |
| unsigned int n) |
| { |
| git_commit *current, *parent = NULL; |
| int error; |
| |
| assert(ancestor && commit); |
| |
| current = (git_commit *)commit; |
| |
| if (n == 0) |
| return git_commit_lookup( |
| ancestor, |
| commit->object.repo, |
| git_object_id((const git_object *)commit)); |
| |
| while (n--) { |
| error = git_commit_parent(&parent, (git_commit *)current, 0); |
| |
| if (current != commit) |
| git_commit_free(current); |
| |
| if (error < 0) |
| return error; |
| |
| current = parent; |
| } |
| |
| *ancestor = parent; |
| return 0; |
| } |