+++ /dev/null
-/*
- * 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 "common.h"
-
-#include "str.h"
-#include "tree.h"
-#include "refdb.h"
-#include "regexp.h"
-#include "date.h"
-
-#include "git2.h"
-
-static int maybe_sha_or_abbrev(git_object **out, git_repository *repo, const char *spec, size_t speclen)
-{
- git_oid oid;
-
- if (git_oid_fromstrn(&oid, spec, speclen) < 0)
- return GIT_ENOTFOUND;
-
- return git_object_lookup_prefix(out, repo, &oid, speclen, GIT_OBJECT_ANY);
-}
-
-static int maybe_sha(git_object **out, git_repository *repo, const char *spec)
-{
- size_t speclen = strlen(spec);
-
- if (speclen != GIT_OID_HEXSZ)
- return GIT_ENOTFOUND;
-
- return maybe_sha_or_abbrev(out, repo, spec, speclen);
-}
-
-static int maybe_abbrev(git_object **out, git_repository *repo, const char *spec)
-{
- size_t speclen = strlen(spec);
-
- return maybe_sha_or_abbrev(out, repo, spec, speclen);
-}
-
-static int build_regex(git_regexp *regex, const char *pattern)
-{
- int error;
-
- if (*pattern == '\0') {
- git_error_set(GIT_ERROR_REGEX, "empty pattern");
- return GIT_EINVALIDSPEC;
- }
-
- error = git_regexp_compile(regex, pattern, 0);
- if (!error)
- return 0;
-
- git_regexp_dispose(regex);
-
- return error;
-}
-
-static int maybe_describe(git_object**out, git_repository *repo, const char *spec)
-{
- const char *substr;
- int error;
- git_regexp regex;
-
- substr = strstr(spec, "-g");
-
- if (substr == NULL)
- return GIT_ENOTFOUND;
-
- if (build_regex(®ex, ".+-[0-9]+-g[0-9a-fA-F]+") < 0)
- return -1;
-
- error = git_regexp_match(®ex, spec);
- git_regexp_dispose(®ex);
-
- if (error)
- return GIT_ENOTFOUND;
-
- return maybe_abbrev(out, repo, substr+2);
-}
-
-static int revparse_lookup_object(
- git_object **object_out,
- git_reference **reference_out,
- git_repository *repo,
- const char *spec)
-{
- int error;
- git_reference *ref;
-
- if ((error = maybe_sha(object_out, repo, spec)) != GIT_ENOTFOUND)
- return error;
-
- error = git_reference_dwim(&ref, repo, spec);
- if (!error) {
-
- error = git_object_lookup(
- object_out, repo, git_reference_target(ref), GIT_OBJECT_ANY);
-
- if (!error)
- *reference_out = ref;
-
- return error;
- }
-
- if (error != GIT_ENOTFOUND)
- return error;
-
- if ((strlen(spec) < GIT_OID_HEXSZ) &&
- ((error = maybe_abbrev(object_out, repo, spec)) != GIT_ENOTFOUND))
- return error;
-
- if ((error = maybe_describe(object_out, repo, spec)) != GIT_ENOTFOUND)
- return error;
-
- git_error_set(GIT_ERROR_REFERENCE, "revspec '%s' not found", spec);
- return GIT_ENOTFOUND;
-}
-
-static int try_parse_numeric(int *n, const char *curly_braces_content)
-{
- int32_t content;
- const char *end_ptr;
-
- if (git__strntol32(&content, curly_braces_content, strlen(curly_braces_content),
- &end_ptr, 10) < 0)
- return -1;
-
- if (*end_ptr != '\0')
- return -1;
-
- *n = (int)content;
- return 0;
-}
-
-static int retrieve_previously_checked_out_branch_or_revision(git_object **out, git_reference **base_ref, git_repository *repo, const char *identifier, size_t position)
-{
- git_reference *ref = NULL;
- git_reflog *reflog = NULL;
- git_regexp preg;
- int error = -1;
- size_t i, numentries, cur;
- const git_reflog_entry *entry;
- const char *msg;
- git_str buf = GIT_STR_INIT;
-
- cur = position;
-
- if (*identifier != '\0' || *base_ref != NULL)
- return GIT_EINVALIDSPEC;
-
- if (build_regex(&preg, "checkout: moving from (.*) to .*") < 0)
- return -1;
-
- if (git_reference_lookup(&ref, repo, GIT_HEAD_FILE) < 0)
- goto cleanup;
-
- if (git_reflog_read(&reflog, repo, GIT_HEAD_FILE) < 0)
- goto cleanup;
-
- numentries = git_reflog_entrycount(reflog);
-
- for (i = 0; i < numentries; i++) {
- git_regmatch regexmatches[2];
-
- entry = git_reflog_entry_byindex(reflog, i);
- msg = git_reflog_entry_message(entry);
- if (!msg)
- continue;
-
- if (git_regexp_search(&preg, msg, 2, regexmatches) < 0)
- continue;
-
- cur--;
-
- if (cur > 0)
- continue;
-
- if ((git_str_put(&buf, msg+regexmatches[1].start, regexmatches[1].end - regexmatches[1].start)) < 0)
- goto cleanup;
-
- if ((error = git_reference_dwim(base_ref, repo, git_str_cstr(&buf))) == 0)
- goto cleanup;
-
- if (error < 0 && error != GIT_ENOTFOUND)
- goto cleanup;
-
- error = maybe_abbrev(out, repo, git_str_cstr(&buf));
-
- goto cleanup;
- }
-
- error = GIT_ENOTFOUND;
-
-cleanup:
- git_reference_free(ref);
- git_str_dispose(&buf);
- git_regexp_dispose(&preg);
- git_reflog_free(reflog);
- return error;
-}
-
-static int retrieve_oid_from_reflog(git_oid *oid, git_reference *ref, size_t identifier)
-{
- git_reflog *reflog;
- size_t numentries;
- const git_reflog_entry *entry = NULL;
- bool search_by_pos = (identifier <= 100000000);
-
- if (git_reflog_read(&reflog, git_reference_owner(ref), git_reference_name(ref)) < 0)
- return -1;
-
- numentries = git_reflog_entrycount(reflog);
-
- if (search_by_pos) {
- if (numentries < identifier + 1)
- goto notfound;
-
- entry = git_reflog_entry_byindex(reflog, identifier);
- git_oid_cpy(oid, git_reflog_entry_id_new(entry));
- } else {
- size_t i;
- git_time commit_time;
-
- for (i = 0; i < numentries; i++) {
- entry = git_reflog_entry_byindex(reflog, i);
- commit_time = git_reflog_entry_committer(entry)->when;
-
- if (commit_time.time > (git_time_t)identifier)
- continue;
-
- git_oid_cpy(oid, git_reflog_entry_id_new(entry));
- break;
- }
-
- if (i == numentries) {
- if (entry == NULL)
- goto notfound;
-
- /*
- * TODO: emit a warning (log for 'branch' only goes back to ...)
- */
- git_oid_cpy(oid, git_reflog_entry_id_new(entry));
- }
- }
-
- git_reflog_free(reflog);
- return 0;
-
-notfound:
- git_error_set(
- GIT_ERROR_REFERENCE,
- "reflog for '%s' has only %"PRIuZ" entries, asked for %"PRIuZ,
- git_reference_name(ref), numentries, identifier);
-
- git_reflog_free(reflog);
- return GIT_ENOTFOUND;
-}
-
-static int retrieve_revobject_from_reflog(git_object **out, git_reference **base_ref, git_repository *repo, const char *identifier, size_t position)
-{
- git_reference *ref;
- git_oid oid;
- int error = -1;
-
- if (*base_ref == NULL) {
- if ((error = git_reference_dwim(&ref, repo, identifier)) < 0)
- return error;
- } else {
- ref = *base_ref;
- *base_ref = NULL;
- }
-
- if (position == 0) {
- error = git_object_lookup(out, repo, git_reference_target(ref), GIT_OBJECT_ANY);
- goto cleanup;
- }
-
- if ((error = retrieve_oid_from_reflog(&oid, ref, position)) < 0)
- goto cleanup;
-
- error = git_object_lookup(out, repo, &oid, GIT_OBJECT_ANY);
-
-cleanup:
- git_reference_free(ref);
- return error;
-}
-
-static int retrieve_remote_tracking_reference(git_reference **base_ref, const char *identifier, git_repository *repo)
-{
- git_reference *tracking, *ref;
- int error = -1;
-
- if (*base_ref == NULL) {
- if ((error = git_reference_dwim(&ref, repo, identifier)) < 0)
- return error;
- } else {
- ref = *base_ref;
- *base_ref = NULL;
- }
-
- if (!git_reference_is_branch(ref)) {
- error = GIT_EINVALIDSPEC;
- goto cleanup;
- }
-
- if ((error = git_branch_upstream(&tracking, ref)) < 0)
- goto cleanup;
-
- *base_ref = tracking;
-
-cleanup:
- git_reference_free(ref);
- return error;
-}
-
-static int handle_at_syntax(git_object **out, git_reference **ref, const char *spec, size_t identifier_len, git_repository *repo, const char *curly_braces_content)
-{
- bool is_numeric;
- int parsed = 0, error = -1;
- git_str identifier = GIT_STR_INIT;
- git_time_t timestamp;
-
- GIT_ASSERT(*out == NULL);
-
- if (git_str_put(&identifier, spec, identifier_len) < 0)
- return -1;
-
- is_numeric = !try_parse_numeric(&parsed, curly_braces_content);
-
- if (*curly_braces_content == '-' && (!is_numeric || parsed == 0)) {
- error = GIT_EINVALIDSPEC;
- goto cleanup;
- }
-
- if (is_numeric) {
- if (parsed < 0)
- error = retrieve_previously_checked_out_branch_or_revision(out, ref, repo, git_str_cstr(&identifier), -parsed);
- else
- error = retrieve_revobject_from_reflog(out, ref, repo, git_str_cstr(&identifier), parsed);
-
- goto cleanup;
- }
-
- if (!strcmp(curly_braces_content, "u") || !strcmp(curly_braces_content, "upstream")) {
- error = retrieve_remote_tracking_reference(ref, git_str_cstr(&identifier), repo);
-
- goto cleanup;
- }
-
- if (git_date_parse(×tamp, curly_braces_content) < 0) {
- error = GIT_EINVALIDSPEC;
- goto cleanup;
- }
-
- error = retrieve_revobject_from_reflog(out, ref, repo, git_str_cstr(&identifier), (size_t)timestamp);
-
-cleanup:
- git_str_dispose(&identifier);
- return error;
-}
-
-static git_object_t parse_obj_type(const char *str)
-{
- if (!strcmp(str, "commit"))
- return GIT_OBJECT_COMMIT;
-
- if (!strcmp(str, "tree"))
- return GIT_OBJECT_TREE;
-
- if (!strcmp(str, "blob"))
- return GIT_OBJECT_BLOB;
-
- if (!strcmp(str, "tag"))
- return GIT_OBJECT_TAG;
-
- return GIT_OBJECT_INVALID;
-}
-
-static int dereference_to_non_tag(git_object **out, git_object *obj)
-{
- if (git_object_type(obj) == GIT_OBJECT_TAG)
- return git_tag_peel(out, (git_tag *)obj);
-
- return git_object_dup(out, obj);
-}
-
-static int handle_caret_parent_syntax(git_object **out, git_object *obj, int n)
-{
- git_object *temp_commit = NULL;
- int error;
-
- if ((error = git_object_peel(&temp_commit, obj, GIT_OBJECT_COMMIT)) < 0)
- return (error == GIT_EAMBIGUOUS || error == GIT_ENOTFOUND) ?
- GIT_EINVALIDSPEC : error;
-
- if (n == 0) {
- *out = temp_commit;
- return 0;
- }
-
- error = git_commit_parent((git_commit **)out, (git_commit*)temp_commit, n - 1);
-
- git_object_free(temp_commit);
- return error;
-}
-
-static int handle_linear_syntax(git_object **out, git_object *obj, int n)
-{
- git_object *temp_commit = NULL;
- int error;
-
- if ((error = git_object_peel(&temp_commit, obj, GIT_OBJECT_COMMIT)) < 0)
- return (error == GIT_EAMBIGUOUS || error == GIT_ENOTFOUND) ?
- GIT_EINVALIDSPEC : error;
-
- error = git_commit_nth_gen_ancestor((git_commit **)out, (git_commit*)temp_commit, n);
-
- git_object_free(temp_commit);
- return error;
-}
-
-static int handle_colon_syntax(
- git_object **out,
- git_object *obj,
- const char *path)
-{
- git_object *tree;
- int error = -1;
- git_tree_entry *entry = NULL;
-
- if ((error = git_object_peel(&tree, obj, GIT_OBJECT_TREE)) < 0)
- return error == GIT_ENOTFOUND ? GIT_EINVALIDSPEC : error;
-
- if (*path == '\0') {
- *out = tree;
- return 0;
- }
-
- /*
- * TODO: Handle the relative path syntax
- * (:./relative/path and :../relative/path)
- */
- if ((error = git_tree_entry_bypath(&entry, (git_tree *)tree, path)) < 0)
- goto cleanup;
-
- error = git_tree_entry_to_object(out, git_object_owner(tree), entry);
-
-cleanup:
- git_tree_entry_free(entry);
- git_object_free(tree);
-
- return error;
-}
-
-static int walk_and_search(git_object **out, git_revwalk *walk, git_regexp *regex)
-{
- int error;
- git_oid oid;
- git_object *obj;
-
- while (!(error = git_revwalk_next(&oid, walk))) {
-
- error = git_object_lookup(&obj, git_revwalk_repository(walk), &oid, GIT_OBJECT_COMMIT);
- if ((error < 0) && (error != GIT_ENOTFOUND))
- return -1;
-
- if (!git_regexp_match(regex, git_commit_message((git_commit*)obj))) {
- *out = obj;
- return 0;
- }
-
- git_object_free(obj);
- }
-
- if (error < 0 && error == GIT_ITEROVER)
- error = GIT_ENOTFOUND;
-
- return error;
-}
-
-static int handle_grep_syntax(git_object **out, git_repository *repo, const git_oid *spec_oid, const char *pattern)
-{
- git_regexp preg;
- git_revwalk *walk = NULL;
- int error;
-
- if ((error = build_regex(&preg, pattern)) < 0)
- return error;
-
- if ((error = git_revwalk_new(&walk, repo)) < 0)
- goto cleanup;
-
- git_revwalk_sorting(walk, GIT_SORT_TIME);
-
- if (spec_oid == NULL) {
- if ((error = git_revwalk_push_glob(walk, "refs/*")) < 0)
- goto cleanup;
- } else if ((error = git_revwalk_push(walk, spec_oid)) < 0)
- goto cleanup;
-
- error = walk_and_search(out, walk, &preg);
-
-cleanup:
- git_regexp_dispose(&preg);
- git_revwalk_free(walk);
-
- return error;
-}
-
-static int handle_caret_curly_syntax(git_object **out, git_object *obj, const char *curly_braces_content)
-{
- git_object_t expected_type;
-
- if (*curly_braces_content == '\0')
- return dereference_to_non_tag(out, obj);
-
- if (*curly_braces_content == '/')
- return handle_grep_syntax(out, git_object_owner(obj), git_object_id(obj), curly_braces_content + 1);
-
- expected_type = parse_obj_type(curly_braces_content);
-
- if (expected_type == GIT_OBJECT_INVALID)
- return GIT_EINVALIDSPEC;
-
- return git_object_peel(out, obj, expected_type);
-}
-
-static int extract_curly_braces_content(git_str *buf, const char *spec, size_t *pos)
-{
- git_str_clear(buf);
-
- GIT_ASSERT_ARG(spec[*pos] == '^' || spec[*pos] == '@');
-
- (*pos)++;
-
- if (spec[*pos] == '\0' || spec[*pos] != '{')
- return GIT_EINVALIDSPEC;
-
- (*pos)++;
-
- while (spec[*pos] != '}') {
- if (spec[*pos] == '\0')
- return GIT_EINVALIDSPEC;
-
- if (git_str_putc(buf, spec[(*pos)++]) < 0)
- return -1;
- }
-
- (*pos)++;
-
- return 0;
-}
-
-static int extract_path(git_str *buf, const char *spec, size_t *pos)
-{
- git_str_clear(buf);
-
- GIT_ASSERT_ARG(spec[*pos] == ':');
-
- (*pos)++;
-
- if (git_str_puts(buf, spec + *pos) < 0)
- return -1;
-
- *pos += git_str_len(buf);
-
- return 0;
-}
-
-static int extract_how_many(int *n, const char *spec, size_t *pos)
-{
- const char *end_ptr;
- int parsed, accumulated;
- char kind = spec[*pos];
-
- GIT_ASSERT_ARG(spec[*pos] == '^' || spec[*pos] == '~');
-
- accumulated = 0;
-
- do {
- do {
- (*pos)++;
- accumulated++;
- } while (spec[(*pos)] == kind && kind == '~');
-
- if (git__isdigit(spec[*pos])) {
- if (git__strntol32(&parsed, spec + *pos, strlen(spec + *pos), &end_ptr, 10) < 0)
- return GIT_EINVALIDSPEC;
-
- accumulated += (parsed - 1);
- *pos = end_ptr - spec;
- }
-
- } while (spec[(*pos)] == kind && kind == '~');
-
- *n = accumulated;
-
- return 0;
-}
-
-static int object_from_reference(git_object **object, git_reference *reference)
-{
- git_reference *resolved = NULL;
- int error;
-
- if (git_reference_resolve(&resolved, reference) < 0)
- return -1;
-
- error = git_object_lookup(object, reference->db->repo, git_reference_target(resolved), GIT_OBJECT_ANY);
- git_reference_free(resolved);
-
- return error;
-}
-
-static int ensure_base_rev_loaded(git_object **object, git_reference **reference, const char *spec, size_t identifier_len, git_repository *repo, bool allow_empty_identifier)
-{
- int error;
- git_str identifier = GIT_STR_INIT;
-
- if (*object != NULL)
- return 0;
-
- if (*reference != NULL)
- return object_from_reference(object, *reference);
-
- if (!allow_empty_identifier && identifier_len == 0)
- return GIT_EINVALIDSPEC;
-
- if (git_str_put(&identifier, spec, identifier_len) < 0)
- return -1;
-
- error = revparse_lookup_object(object, reference, repo, git_str_cstr(&identifier));
- git_str_dispose(&identifier);
-
- return error;
-}
-
-static int ensure_base_rev_is_not_known_yet(git_object *object)
-{
- if (object == NULL)
- return 0;
-
- return GIT_EINVALIDSPEC;
-}
-
-static bool any_left_hand_identifier(git_object *object, git_reference *reference, size_t identifier_len)
-{
- if (object != NULL)
- return true;
-
- if (reference != NULL)
- return true;
-
- if (identifier_len > 0)
- return true;
-
- return false;
-}
-
-static int ensure_left_hand_identifier_is_not_known_yet(git_object *object, git_reference *reference)
-{
- if (!ensure_base_rev_is_not_known_yet(object) && reference == NULL)
- return 0;
-
- return GIT_EINVALIDSPEC;
-}
-
-static int revparse(
- git_object **object_out,
- git_reference **reference_out,
- size_t *identifier_len_out,
- git_repository *repo,
- const char *spec)
-{
- size_t pos = 0, identifier_len = 0;
- int error = -1, n;
- git_str buf = GIT_STR_INIT;
-
- git_reference *reference = NULL;
- git_object *base_rev = NULL;
-
- bool should_return_reference = true;
-
- GIT_ASSERT_ARG(object_out);
- GIT_ASSERT_ARG(reference_out);
- GIT_ASSERT_ARG(repo);
- GIT_ASSERT_ARG(spec);
-
- *object_out = NULL;
- *reference_out = NULL;
-
- while (spec[pos]) {
- switch (spec[pos]) {
- case '^':
- should_return_reference = false;
-
- if ((error = ensure_base_rev_loaded(&base_rev, &reference, spec, identifier_len, repo, false)) < 0)
- goto cleanup;
-
- if (spec[pos+1] == '{') {
- git_object *temp_object = NULL;
-
- if ((error = extract_curly_braces_content(&buf, spec, &pos)) < 0)
- goto cleanup;
-
- if ((error = handle_caret_curly_syntax(&temp_object, base_rev, git_str_cstr(&buf))) < 0)
- goto cleanup;
-
- git_object_free(base_rev);
- base_rev = temp_object;
- } else {
- git_object *temp_object = NULL;
-
- if ((error = extract_how_many(&n, spec, &pos)) < 0)
- goto cleanup;
-
- if ((error = handle_caret_parent_syntax(&temp_object, base_rev, n)) < 0)
- goto cleanup;
-
- git_object_free(base_rev);
- base_rev = temp_object;
- }
- break;
-
- case '~':
- {
- git_object *temp_object = NULL;
-
- should_return_reference = false;
-
- if ((error = extract_how_many(&n, spec, &pos)) < 0)
- goto cleanup;
-
- if ((error = ensure_base_rev_loaded(&base_rev, &reference, spec, identifier_len, repo, false)) < 0)
- goto cleanup;
-
- if ((error = handle_linear_syntax(&temp_object, base_rev, n)) < 0)
- goto cleanup;
-
- git_object_free(base_rev);
- base_rev = temp_object;
- break;
- }
-
- case ':':
- {
- git_object *temp_object = NULL;
-
- should_return_reference = false;
-
- if ((error = extract_path(&buf, spec, &pos)) < 0)
- goto cleanup;
-
- if (any_left_hand_identifier(base_rev, reference, identifier_len)) {
- if ((error = ensure_base_rev_loaded(&base_rev, &reference, spec, identifier_len, repo, true)) < 0)
- goto cleanup;
-
- if ((error = handle_colon_syntax(&temp_object, base_rev, git_str_cstr(&buf))) < 0)
- goto cleanup;
- } else {
- if (*git_str_cstr(&buf) == '/') {
- if ((error = handle_grep_syntax(&temp_object, repo, NULL, git_str_cstr(&buf) + 1)) < 0)
- goto cleanup;
- } else {
-
- /*
- * TODO: support merge-stage path lookup (":2:Makefile")
- * and plain index blob lookup (:i-am/a/blob)
- */
- git_error_set(GIT_ERROR_INVALID, "unimplemented");
- error = GIT_ERROR;
- goto cleanup;
- }
- }
-
- git_object_free(base_rev);
- base_rev = temp_object;
- break;
- }
-
- case '@':
- if (spec[pos+1] == '{') {
- git_object *temp_object = NULL;
-
- if ((error = extract_curly_braces_content(&buf, spec, &pos)) < 0)
- goto cleanup;
-
- if ((error = ensure_base_rev_is_not_known_yet(base_rev)) < 0)
- goto cleanup;
-
- if ((error = handle_at_syntax(&temp_object, &reference, spec, identifier_len, repo, git_str_cstr(&buf))) < 0)
- goto cleanup;
-
- if (temp_object != NULL)
- base_rev = temp_object;
- break;
- } else if (spec[pos+1] == '\0') {
- spec = "HEAD";
- break;
- }
- /* fall through */
-
- default:
- if ((error = ensure_left_hand_identifier_is_not_known_yet(base_rev, reference)) < 0)
- goto cleanup;
-
- pos++;
- identifier_len++;
- }
- }
-
- if ((error = ensure_base_rev_loaded(&base_rev, &reference, spec, identifier_len, repo, false)) < 0)
- goto cleanup;
-
- if (!should_return_reference) {
- git_reference_free(reference);
- reference = NULL;
- }
-
- *object_out = base_rev;
- *reference_out = reference;
- *identifier_len_out = identifier_len;
- error = 0;
-
-cleanup:
- if (error) {
- if (error == GIT_EINVALIDSPEC)
- git_error_set(GIT_ERROR_INVALID,
- "failed to parse revision specifier - Invalid pattern '%s'", spec);
-
- git_object_free(base_rev);
- git_reference_free(reference);
- }
-
- git_str_dispose(&buf);
- return error;
-}
-
-int git_revparse_ext(
- git_object **object_out,
- git_reference **reference_out,
- git_repository *repo,
- const char *spec)
-{
- int error;
- size_t identifier_len;
- git_object *obj = NULL;
- git_reference *ref = NULL;
-
- if ((error = revparse(&obj, &ref, &identifier_len, repo, spec)) < 0)
- goto cleanup;
-
- *object_out = obj;
- *reference_out = ref;
- GIT_UNUSED(identifier_len);
-
- return 0;
-
-cleanup:
- git_object_free(obj);
- git_reference_free(ref);
- return error;
-}
-
-int git_revparse_single(git_object **out, git_repository *repo, const char *spec)
-{
- int error;
- git_object *obj = NULL;
- git_reference *ref = NULL;
-
- *out = NULL;
-
- if ((error = git_revparse_ext(&obj, &ref, repo, spec)) < 0)
- goto cleanup;
-
- git_reference_free(ref);
-
- *out = obj;
-
- return 0;
-
-cleanup:
- git_object_free(obj);
- git_reference_free(ref);
- return error;
-}
-
-int git_revparse(
- git_revspec *revspec,
- git_repository *repo,
- const char *spec)
-{
- const char *dotdot;
- int error = 0;
-
- GIT_ASSERT_ARG(revspec);
- GIT_ASSERT_ARG(repo);
- GIT_ASSERT_ARG(spec);
-
- memset(revspec, 0x0, sizeof(*revspec));
-
- if ((dotdot = strstr(spec, "..")) != NULL) {
- char *lstr;
- const char *rstr;
- revspec->flags = GIT_REVSPEC_RANGE;
-
- /*
- * Following git.git, don't allow '..' because it makes command line
- * arguments which can be either paths or revisions ambiguous when the
- * path is almost certainly intended. The empty range '...' is still
- * allowed.
- */
- if (!git__strcmp(spec, "..")) {
- git_error_set(GIT_ERROR_INVALID, "Invalid pattern '..'");
- return GIT_EINVALIDSPEC;
- }
-
- lstr = git__substrdup(spec, dotdot - spec);
- rstr = dotdot + 2;
- if (dotdot[2] == '.') {
- revspec->flags |= GIT_REVSPEC_MERGE_BASE;
- rstr++;
- }
-
- error = git_revparse_single(
- &revspec->from,
- repo,
- *lstr == '\0' ? "HEAD" : lstr);
-
- if (!error) {
- error = git_revparse_single(
- &revspec->to,
- repo,
- *rstr == '\0' ? "HEAD" : rstr);
- }
-
- git__free((void*)lstr);
- } else {
- revspec->flags = GIT_REVSPEC_SINGLE;
- error = git_revparse_single(&revspec->from, repo, spec);
- }
-
- return error;
-}
projects / libgit2.git / blobdiff