diff options
Diffstat (limited to 'src/refspec.c')
-rw-r--r-- | src/refspec.c | 425 |
1 files changed, 0 insertions, 425 deletions
diff --git a/src/refspec.c b/src/refspec.c deleted file mode 100644 index c72721a43..000000000 --- a/src/refspec.c +++ /dev/null @@ -1,425 +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 "refspec.h" - -#include "git2/errors.h" - -#include "refs.h" -#include "util.h" -#include "vector.h" -#include "wildmatch.h" - -int git_refspec__parse(git_refspec *refspec, const char *input, bool is_fetch) -{ - /* Ported from https://github.com/git/git/blob/f06d47e7e0d9db709ee204ed13a8a7486149f494/remote.c#L518-636 */ - - size_t llen; - int is_glob = 0; - const char *lhs, *rhs; - int valid = 0; - unsigned int flags; - - GIT_ASSERT_ARG(refspec); - GIT_ASSERT_ARG(input); - - memset(refspec, 0x0, sizeof(git_refspec)); - refspec->push = !is_fetch; - - lhs = input; - if (*lhs == '+') { - refspec->force = 1; - lhs++; - } - - rhs = strrchr(lhs, ':'); - - /* - * Before going on, special case ":" (or "+:") as a refspec - * for matching refs. - */ - if (!is_fetch && rhs == lhs && rhs[1] == '\0') { - refspec->matching = 1; - refspec->string = git__strdup(input); - GIT_ERROR_CHECK_ALLOC(refspec->string); - refspec->src = git__strdup(""); - GIT_ERROR_CHECK_ALLOC(refspec->src); - refspec->dst = git__strdup(""); - GIT_ERROR_CHECK_ALLOC(refspec->dst); - return 0; - } - - if (rhs) { - size_t rlen = strlen(++rhs); - if (rlen || !is_fetch) { - is_glob = (1 <= rlen && strchr(rhs, '*')); - refspec->dst = git__strndup(rhs, rlen); - } - } - - llen = (rhs ? (size_t)(rhs - lhs - 1) : strlen(lhs)); - if (1 <= llen && memchr(lhs, '*', llen)) { - if ((rhs && !is_glob) || (!rhs && is_fetch)) - goto invalid; - is_glob = 1; - } else if (rhs && is_glob) - goto invalid; - - refspec->pattern = is_glob; - refspec->src = git__strndup(lhs, llen); - flags = GIT_REFERENCE_FORMAT_ALLOW_ONELEVEL | - GIT_REFERENCE_FORMAT_REFSPEC_SHORTHAND | - (is_glob ? GIT_REFERENCE_FORMAT_REFSPEC_PATTERN : 0); - - if (is_fetch) { - /* - * LHS - * - empty is allowed; it means HEAD. - * - otherwise it must be a valid looking ref. - */ - if (!*refspec->src) - ; /* empty is ok */ - else if (git_reference__name_is_valid(&valid, refspec->src, flags) < 0) - goto on_error; - else if (!valid) - goto invalid; - - /* - * RHS - * - missing is ok, and is same as empty. - * - empty is ok; it means not to store. - * - otherwise it must be a valid looking ref. - */ - if (!refspec->dst) - ; /* ok */ - else if (!*refspec->dst) - ; /* ok */ - else if (git_reference__name_is_valid(&valid, refspec->dst, flags) < 0) - goto on_error; - else if (!valid) - goto invalid; - } else { - /* - * LHS - * - empty is allowed; it means delete. - * - when wildcarded, it must be a valid looking ref. - * - otherwise, it must be an extended SHA-1, but - * there is no existing way to validate this. - */ - if (!*refspec->src) - ; /* empty is ok */ - else if (is_glob) { - if (git_reference__name_is_valid(&valid, refspec->src, flags) < 0) - goto on_error; - else if (!valid) - goto invalid; - } - else { - ; /* anything goes, for now */ - } - - /* - * RHS - * - missing is allowed, but LHS then must be a - * valid looking ref. - * - empty is not allowed. - * - otherwise it must be a valid looking ref. - */ - if (!refspec->dst) { - if (git_reference__name_is_valid(&valid, refspec->src, flags) < 0) - goto on_error; - else if (!valid) - goto invalid; - } else if (!*refspec->dst) { - goto invalid; - } else { - if (git_reference__name_is_valid(&valid, refspec->dst, flags) < 0) - goto on_error; - else if (!valid) - goto invalid; - } - - /* if the RHS is empty, then it's a copy of the LHS */ - if (!refspec->dst) { - refspec->dst = git__strdup(refspec->src); - GIT_ERROR_CHECK_ALLOC(refspec->dst); - } - } - - refspec->string = git__strdup(input); - GIT_ERROR_CHECK_ALLOC(refspec->string); - - return 0; - -invalid: - git_error_set(GIT_ERROR_INVALID, - "'%s' is not a valid refspec.", input); - git_refspec__dispose(refspec); - return GIT_EINVALIDSPEC; - -on_error: - git_refspec__dispose(refspec); - return -1; -} - -void git_refspec__dispose(git_refspec *refspec) -{ - if (refspec == NULL) - return; - - git__free(refspec->src); - git__free(refspec->dst); - git__free(refspec->string); - - memset(refspec, 0x0, sizeof(git_refspec)); -} - -int git_refspec_parse(git_refspec **out_refspec, const char *input, int is_fetch) -{ - git_refspec *refspec; - GIT_ASSERT_ARG(out_refspec); - GIT_ASSERT_ARG(input); - - *out_refspec = NULL; - - refspec = git__malloc(sizeof(git_refspec)); - GIT_ERROR_CHECK_ALLOC(refspec); - - if (git_refspec__parse(refspec, input, !!is_fetch) != 0) { - git__free(refspec); - return -1; - } - - *out_refspec = refspec; - return 0; -} - -void git_refspec_free(git_refspec *refspec) -{ - git_refspec__dispose(refspec); - git__free(refspec); -} - -const char *git_refspec_src(const git_refspec *refspec) -{ - return refspec == NULL ? NULL : refspec->src; -} - -const char *git_refspec_dst(const git_refspec *refspec) -{ - return refspec == NULL ? NULL : refspec->dst; -} - -const char *git_refspec_string(const git_refspec *refspec) -{ - return refspec == NULL ? NULL : refspec->string; -} - -int git_refspec_force(const git_refspec *refspec) -{ - GIT_ASSERT_ARG(refspec); - - return refspec->force; -} - -int git_refspec_src_matches(const git_refspec *refspec, const char *refname) -{ - if (refspec == NULL || refspec->src == NULL) - return false; - - return (wildmatch(refspec->src, refname, 0) == 0); -} - -int git_refspec_dst_matches(const git_refspec *refspec, const char *refname) -{ - if (refspec == NULL || refspec->dst == NULL) - return false; - - return (wildmatch(refspec->dst, refname, 0) == 0); -} - -static int refspec_transform( - git_buf *out, const char *from, const char *to, const char *name) -{ - const char *from_star, *to_star; - size_t replacement_len, star_offset; - int error; - - if ((error = git_buf_sanitize(out)) < 0) - return error; - - git_buf_clear(out); - - /* - * There are two parts to each side of a refspec, the bit - * before the star and the bit after it. The star can be in - * the middle of the pattern, so we need to look at each bit - * individually. - */ - from_star = strchr(from, '*'); - to_star = strchr(to, '*'); - - GIT_ASSERT(from_star && to_star); - - /* star offset, both in 'from' and in 'name' */ - star_offset = from_star - from; - - /* the first half is copied over */ - git_buf_put(out, to, to_star - to); - - /* - * Copy over the name, but exclude the trailing part in "from" starting - * after the glob - */ - replacement_len = strlen(name + star_offset) - strlen(from_star + 1); - git_buf_put(out, name + star_offset, replacement_len); - - return git_buf_puts(out, to_star + 1); -} - -int git_refspec_transform(git_buf *out, const git_refspec *spec, const char *name) -{ - int error; - - GIT_ASSERT_ARG(out); - GIT_ASSERT_ARG(spec); - GIT_ASSERT_ARG(name); - - if ((error = git_buf_sanitize(out)) < 0) - return error; - - if (!git_refspec_src_matches(spec, name)) { - git_error_set(GIT_ERROR_INVALID, "ref '%s' doesn't match the source", name); - return -1; - } - - if (!spec->pattern) - return git_buf_puts(out, spec->dst ? spec->dst : ""); - - return refspec_transform(out, spec->src, spec->dst, name); -} - -int git_refspec_rtransform(git_buf *out, const git_refspec *spec, const char *name) -{ - int error; - - GIT_ASSERT_ARG(out); - GIT_ASSERT_ARG(spec); - GIT_ASSERT_ARG(name); - - if ((error = git_buf_sanitize(out)) < 0) - return error; - - if (!git_refspec_dst_matches(spec, name)) { - git_error_set(GIT_ERROR_INVALID, "ref '%s' doesn't match the destination", name); - return -1; - } - - if (!spec->pattern) - return git_buf_puts(out, spec->src); - - return refspec_transform(out, spec->dst, spec->src, name); -} - -int git_refspec__serialize(git_buf *out, const git_refspec *refspec) -{ - if (refspec->force) - git_buf_putc(out, '+'); - - git_buf_printf(out, "%s:%s", - refspec->src != NULL ? refspec->src : "", - refspec->dst != NULL ? refspec->dst : ""); - - return git_buf_oom(out) == false; -} - -int git_refspec_is_wildcard(const git_refspec *spec) -{ - GIT_ASSERT_ARG(spec); - GIT_ASSERT_ARG(spec->src); - - return (spec->src[strlen(spec->src) - 1] == '*'); -} - -git_direction git_refspec_direction(const git_refspec *spec) -{ - GIT_ASSERT_ARG(spec); - - return spec->push; -} - -int git_refspec__dwim_one(git_vector *out, git_refspec *spec, git_vector *refs) -{ - git_buf buf = GIT_BUF_INIT; - size_t j, pos; - git_remote_head key; - git_refspec *cur; - - const char *formatters[] = { - GIT_REFS_DIR "%s", - GIT_REFS_TAGS_DIR "%s", - GIT_REFS_HEADS_DIR "%s", - NULL - }; - - GIT_ASSERT_ARG(out); - GIT_ASSERT_ARG(spec); - GIT_ASSERT_ARG(refs); - - cur = git__calloc(1, sizeof(git_refspec)); - GIT_ERROR_CHECK_ALLOC(cur); - - cur->force = spec->force; - cur->push = spec->push; - cur->pattern = spec->pattern; - cur->matching = spec->matching; - cur->string = git__strdup(spec->string); - - /* shorthand on the lhs */ - if (git__prefixcmp(spec->src, GIT_REFS_DIR)) { - for (j = 0; formatters[j]; j++) { - git_buf_clear(&buf); - git_buf_printf(&buf, formatters[j], spec->src); - GIT_ERROR_CHECK_ALLOC_BUF(&buf); - - key.name = (char *) git_buf_cstr(&buf); - if (!git_vector_search(&pos, refs, &key)) { - /* we found something to match the shorthand, set src to that */ - cur->src = git_buf_detach(&buf); - } - } - } - - /* No shorthands found, copy over the name */ - if (cur->src == NULL && spec->src != NULL) { - cur->src = git__strdup(spec->src); - GIT_ERROR_CHECK_ALLOC(cur->src); - } - - if (spec->dst && git__prefixcmp(spec->dst, GIT_REFS_DIR)) { - /* if it starts with "remotes" then we just prepend "refs/" */ - if (!git__prefixcmp(spec->dst, "remotes/")) { - git_buf_puts(&buf, GIT_REFS_DIR); - } else { - git_buf_puts(&buf, GIT_REFS_HEADS_DIR); - } - - git_buf_puts(&buf, spec->dst); - GIT_ERROR_CHECK_ALLOC_BUF(&buf); - - cur->dst = git_buf_detach(&buf); - } - - git_buf_dispose(&buf); - - if (cur->dst == NULL && spec->dst != NULL) { - cur->dst = git__strdup(spec->dst); - GIT_ERROR_CHECK_ALLOC(cur->dst); - } - - return git_vector_insert(out, cur); -} |