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/*
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* Copyright (C) the libgit2 contributors. All rights reserved.
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*
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* This file is part of libgit2, distributed under the GNU GPL v2 with
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* a Linking Exception. For full terms see the included COPYING file.
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*/
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#include "git2/errors.h"
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#include "common.h"
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#include "refspec.h"
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#include "util.h"
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#include "posix.h"
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#include "refs.h"
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#include "vector.h"
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int git_refspec__parse(git_refspec *refspec, const char *input, bool is_fetch)
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{
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// Ported from https://github.com/git/git/blob/f06d47e7e0d9db709ee204ed13a8a7486149f494/remote.c#L518-636
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size_t llen;
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int is_glob = 0;
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const char *lhs, *rhs;
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int flags;
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assert(refspec && input);
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memset(refspec, 0x0, sizeof(git_refspec));
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refspec->push = !is_fetch;
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lhs = input;
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if (*lhs == '+') {
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refspec->force = 1;
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lhs++;
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}
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rhs = strrchr(lhs, ':');
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/*
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* Before going on, special case ":" (or "+:") as a refspec
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* for matching refs.
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*/
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if (!is_fetch && rhs == lhs && rhs[1] == '\0') {
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refspec->matching = 1;
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refspec->string = git__strdup(input);
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GITERR_CHECK_ALLOC(refspec->string);
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refspec->src = git__strdup("");
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GITERR_CHECK_ALLOC(refspec->src);
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refspec->dst = git__strdup("");
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GITERR_CHECK_ALLOC(refspec->dst);
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return 0;
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}
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if (rhs) {
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size_t rlen = strlen(++rhs);
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if (rlen || !is_fetch) {
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is_glob = (1 <= rlen && strchr(rhs, '*'));
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refspec->dst = git__strndup(rhs, rlen);
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}
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}
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llen = (rhs ? (size_t)(rhs - lhs - 1) : strlen(lhs));
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if (1 <= llen && memchr(lhs, '*', llen)) {
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if ((rhs && !is_glob) || (!rhs && is_fetch))
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goto invalid;
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is_glob = 1;
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} else if (rhs && is_glob)
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goto invalid;
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refspec->pattern = is_glob;
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refspec->src = git__strndup(lhs, llen);
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flags = GIT_REF_FORMAT_ALLOW_ONELEVEL | GIT_REF_FORMAT_REFSPEC_SHORTHAND
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| (is_glob ? GIT_REF_FORMAT_REFSPEC_PATTERN : 0);
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if (is_fetch) {
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/*
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* LHS
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* - empty is allowed; it means HEAD.
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* - otherwise it must be a valid looking ref.
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*/
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if (!*refspec->src)
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; /* empty is ok */
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else if (!git_reference__is_valid_name(refspec->src, flags))
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goto invalid;
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/*
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* RHS
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* - missing is ok, and is same as empty.
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* - empty is ok; it means not to store.
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* - otherwise it must be a valid looking ref.
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*/
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if (!refspec->dst)
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; /* ok */
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else if (!*refspec->dst)
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; /* ok */
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else if (!git_reference__is_valid_name(refspec->dst, flags))
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goto invalid;
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} else {
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/*
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* LHS
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* - empty is allowed; it means delete.
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* - when wildcarded, it must be a valid looking ref.
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* - otherwise, it must be an extended SHA-1, but
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* there is no existing way to validate this.
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*/
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if (!*refspec->src)
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; /* empty is ok */
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else if (is_glob) {
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if (!git_reference__is_valid_name(refspec->src, flags))
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goto invalid;
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}
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else {
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; /* anything goes, for now */
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}
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/*
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* RHS
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* - missing is allowed, but LHS then must be a
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* valid looking ref.
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* - empty is not allowed.
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* - otherwise it must be a valid looking ref.
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*/
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if (!refspec->dst) {
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if (!git_reference__is_valid_name(refspec->src, flags))
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goto invalid;
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} else if (!*refspec->dst) {
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goto invalid;
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} else {
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if (!git_reference__is_valid_name(refspec->dst, flags))
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goto invalid;
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}
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/* if the RHS is empty, then it's a copy of the LHS */
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if (!refspec->dst) {
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refspec->dst = git__strdup(refspec->src);
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GITERR_CHECK_ALLOC(refspec->dst);
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}
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}
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refspec->string = git__strdup(input);
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GITERR_CHECK_ALLOC(refspec->string);
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return 0;
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invalid:
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giterr_set(
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GITERR_INVALID,
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"'%s' is not a valid refspec.", input);
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git_refspec__free(refspec);
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return -1;
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}
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void git_refspec__free(git_refspec *refspec)
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{
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if (refspec == NULL)
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return;
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git__free(refspec->src);
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git__free(refspec->dst);
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git__free(refspec->string);
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memset(refspec, 0x0, sizeof(git_refspec));
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}
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const char *git_refspec_src(const git_refspec *refspec)
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{
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return refspec == NULL ? NULL : refspec->src;
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}
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const char *git_refspec_dst(const git_refspec *refspec)
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{
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return refspec == NULL ? NULL : refspec->dst;
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}
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const char *git_refspec_string(const git_refspec *refspec)
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{
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return refspec == NULL ? NULL : refspec->string;
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}
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int git_refspec_force(const git_refspec *refspec)
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{
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assert(refspec);
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return refspec->force;
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}
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int git_refspec_src_matches(const git_refspec *refspec, const char *refname)
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{
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if (refspec == NULL || refspec->src == NULL)
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return false;
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return (p_fnmatch(refspec->src, refname, 0) == 0);
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}
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int git_refspec_dst_matches(const git_refspec *refspec, const char *refname)
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{
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if (refspec == NULL || refspec->dst == NULL)
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return false;
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return (p_fnmatch(refspec->dst, refname, 0) == 0);
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}
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static int refspec_transform(
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git_buf *out, const char *from, const char *to, const char *name)
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{
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const char *from_star, *to_star;
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const char *name_slash, *from_slash;
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size_t replacement_len, star_offset;
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git_buf_sanitize(out);
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git_buf_clear(out);
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|
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/*
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* There are two parts to each side of a refspec, the bit
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* before the star and the bit after it. The star can be in
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* the middle of the pattern, so we need to look at each bit
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* individually.
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*/
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from_star = strchr(from, '*');
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to_star = strchr(to, '*');
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assert(from_star && to_star);
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|
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/* star offset, both in 'from' and in 'name' */
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star_offset = from_star - from;
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/* the first half is copied over */
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git_buf_put(out, to, to_star - to);
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/* then we copy over the replacement, from the star's offset to the next slash in 'name' */
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name_slash = strchr(name + star_offset, '/');
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if (!name_slash)
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name_slash = strrchr(name, '\0');
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|
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/* if there is no slash after the star in 'from', we want to copy everything over */
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from_slash = strchr(from + star_offset, '/');
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if (!from_slash)
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name_slash = strrchr(name, '\0');
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replacement_len = (name_slash - name) - star_offset;
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git_buf_put(out, name + star_offset, replacement_len);
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return git_buf_puts(out, to_star + 1);
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|
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}
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|
|
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int git_refspec_transform(git_buf *out, const git_refspec *spec, const char *name)
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{
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assert(out && spec && name);
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git_buf_sanitize(out);
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20376f |
|
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if (!git_refspec_src_matches(spec, name)) {
|
|
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giterr_set(GITERR_INVALID, "ref '%s' doesn't match the source", name);
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|
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return -1;
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|
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}
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|
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|
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if (!spec->pattern)
|
|
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return git_buf_puts(out, spec->dst);
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20376f |
|
|
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return refspec_transform(out, spec->src, spec->dst, name);
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|
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20376f |
}
|
|
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20376f |
|
|
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int git_refspec_rtransform(git_buf *out, const git_refspec *spec, const char *name)
|
|
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20376f |
{
|
|
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20376f |
assert(out && spec && name);
|
|
Packit Service |
20376f |
git_buf_sanitize(out);
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|
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20376f |
|
|
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20376f |
if (!git_refspec_dst_matches(spec, name)) {
|
|
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giterr_set(GITERR_INVALID, "ref '%s' doesn't match the destination", name);
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|
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return -1;
|
|
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20376f |
}
|
|
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20376f |
|
|
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20376f |
if (!spec->pattern)
|
|
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20376f |
return git_buf_puts(out, spec->src);
|
|
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20376f |
|
|
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20376f |
return refspec_transform(out, spec->dst, spec->src, name);
|
|
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20376f |
}
|
|
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20376f |
|
|
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20376f |
int git_refspec__serialize(git_buf *out, const git_refspec *refspec)
|
|
Packit Service |
20376f |
{
|
|
Packit Service |
20376f |
if (refspec->force)
|
|
Packit Service |
20376f |
git_buf_putc(out, '+');
|
|
Packit Service |
20376f |
|
|
Packit Service |
20376f |
git_buf_printf(out, "%s:%s",
|
|
Packit Service |
20376f |
refspec->src != NULL ? refspec->src : "",
|
|
Packit Service |
20376f |
refspec->dst != NULL ? refspec->dst : "");
|
|
Packit Service |
20376f |
|
|
Packit Service |
20376f |
return git_buf_oom(out) == false;
|
|
Packit Service |
20376f |
}
|
|
Packit Service |
20376f |
|
|
Packit Service |
20376f |
int git_refspec_is_wildcard(const git_refspec *spec)
|
|
Packit Service |
20376f |
{
|
|
Packit Service |
20376f |
assert(spec && spec->src);
|
|
Packit Service |
20376f |
|
|
Packit Service |
20376f |
return (spec->src[strlen(spec->src) - 1] == '*');
|
|
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20376f |
}
|
|
Packit Service |
20376f |
|
|
Packit Service |
20376f |
git_direction git_refspec_direction(const git_refspec *spec)
|
|
Packit Service |
20376f |
{
|
|
Packit Service |
20376f |
assert(spec);
|
|
Packit Service |
20376f |
|
|
Packit Service |
20376f |
return spec->push;
|
|
Packit Service |
20376f |
}
|
|
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int git_refspec__dwim_one(git_vector *out, git_refspec *spec, git_vector *refs)
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{
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git_buf buf = GIT_BUF_INIT;
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size_t j, pos;
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git_remote_head key;
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const char* formatters[] = {
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GIT_REFS_DIR "%s",
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GIT_REFS_TAGS_DIR "%s",
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GIT_REFS_HEADS_DIR "%s",
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NULL
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};
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git_refspec *cur = git__calloc(1, sizeof(git_refspec));
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GITERR_CHECK_ALLOC(cur);
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cur->force = spec->force;
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cur->push = spec->push;
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cur->pattern = spec->pattern;
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cur->matching = spec->matching;
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cur->string = git__strdup(spec->string);
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/* shorthand on the lhs */
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if (git__prefixcmp(spec->src, GIT_REFS_DIR)) {
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for (j = 0; formatters[j]; j++) {
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git_buf_clear(&buf;;
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git_buf_printf(&buf, formatters[j], spec->src);
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GITERR_CHECK_ALLOC_BUF(&buf;;
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key.name = (char *) git_buf_cstr(&buf;;
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if (!git_vector_search(&pos, refs, &key)) {
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/* we found something to match the shorthand, set src to that */
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cur->src = git_buf_detach(&buf;;
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}
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}
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}
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/* No shorthands found, copy over the name */
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if (cur->src == NULL && spec->src != NULL) {
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cur->src = git__strdup(spec->src);
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GITERR_CHECK_ALLOC(cur->src);
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}
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if (spec->dst && git__prefixcmp(spec->dst, GIT_REFS_DIR)) {
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/* if it starts with "remotes" then we just prepend "refs/" */
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if (!git__prefixcmp(spec->dst, "remotes/")) {
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git_buf_puts(&buf, GIT_REFS_DIR);
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} else {
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git_buf_puts(&buf, GIT_REFS_HEADS_DIR);
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}
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git_buf_puts(&buf, spec->dst);
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GITERR_CHECK_ALLOC_BUF(&buf;;
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cur->dst = git_buf_detach(&buf;;
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}
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git_buf_free(&buf;;
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if (cur->dst == NULL && spec->dst != NULL) {
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cur->dst = git__strdup(spec->dst);
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GITERR_CHECK_ALLOC(cur->dst);
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}
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return git_vector_insert(out, cur);
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}
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