diff options
| -rw-r--r-- | Documentation/git-rev-parse.txt | 7 | ||||
| -rw-r--r-- | builtin/rev-parse.c | 7 | ||||
| -rw-r--r-- | cache.h | 1 | ||||
| -rw-r--r-- | environment.c | 19 | ||||
| -rw-r--r-- | path.c | 49 | ||||
| -rwxr-xr-x | t/t0060-path-utils.sh | 19 |
6 files changed, 95 insertions, 7 deletions
diff --git a/Documentation/git-rev-parse.txt b/Documentation/git-rev-parse.txt index d6de42f74e..2103bbf48a 100644 --- a/Documentation/git-rev-parse.txt +++ b/Documentation/git-rev-parse.txt @@ -233,6 +233,13 @@ print a message to stderr and exit with nonzero status. repository. If <path> is a gitfile then the resolved path to the real repository is printed. +--git-path <path>:: + Resolve "$GIT_DIR/<path>" and takes other path relocation + variables such as $GIT_OBJECT_DIRECTORY, + $GIT_INDEX_FILE... into account. For example, if + $GIT_OBJECT_DIRECTORY is set to /foo/bar then "git rev-parse + --git-path objects/abc" returns /foo/bar/abc. + --show-cdup:: When the command is invoked from a subdirectory, show the path of the top-level directory relative to the current diff --git a/builtin/rev-parse.c b/builtin/rev-parse.c index 35d3c43ed6..4cd44aa45d 100644 --- a/builtin/rev-parse.c +++ b/builtin/rev-parse.c @@ -533,6 +533,13 @@ int cmd_rev_parse(int argc, const char **argv, const char *prefix) for (i = 1; i < argc; i++) { const char *arg = argv[i]; + if (!strcmp(arg, "--git-path")) { + if (!argv[i + 1]) + die("--git-path requires an argument"); + puts(git_path("%s", argv[i + 1])); + i++; + continue; + } if (as_is) { if (show_file(arg, output_prefix) && as_is < 2) verify_filename(prefix, arg, 0); @@ -617,6 +617,7 @@ extern int fsync_object_files; extern int core_preload_index; extern int core_apply_sparse_checkout; extern int precomposed_unicode; +extern int git_db_env, git_index_env, git_graft_env; /* * The character that begins a commented line in user-editable file diff --git a/environment.c b/environment.c index 565f65293b..fee12a605d 100644 --- a/environment.c +++ b/environment.c @@ -83,6 +83,7 @@ static size_t namespace_len; static const char *git_dir; static char *git_object_dir, *git_index_file, *git_graft_file; +int git_db_env, git_index_env, git_graft_env; /* * Repository-local GIT_* environment variables; see cache.h for details. @@ -124,10 +125,18 @@ static char *expand_namespace(const char *raw_namespace) return strbuf_detach(&buf, NULL); } -static char *git_path_from_env(const char *envvar, const char *path) +static char *git_path_from_env(const char *envvar, const char *path, + int *fromenv) { const char *value = getenv(envvar); - return value ? xstrdup(value) : git_pathdup("%s", path); + if (!value) { + char *buf = xmalloc(strlen(git_dir) + strlen(path) + 2); + sprintf(buf, "%s/%s", git_dir, path); + return buf; + } + if (fromenv) + *fromenv = 1; + return xstrdup(value); } static void setup_git_env(void) @@ -140,9 +149,9 @@ static void setup_git_env(void) git_dir = DEFAULT_GIT_DIR_ENVIRONMENT; gitfile = read_gitfile(git_dir); git_dir = xstrdup(gitfile ? gitfile : git_dir); - git_object_dir = git_path_from_env(DB_ENVIRONMENT, "objects"); - git_index_file = git_path_from_env(INDEX_ENVIRONMENT, "index"); - git_graft_file = git_path_from_env(GRAFT_ENVIRONMENT, "info/grafts"); + git_object_dir = git_path_from_env(DB_ENVIRONMENT, "objects", &git_db_env); + git_index_file = git_path_from_env(INDEX_ENVIRONMENT, "index", &git_index_env); + git_graft_file = git_path_from_env(GRAFT_ENVIRONMENT, "info/grafts", &git_graft_env); if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT)) check_replace_refs = 0; namespace = expand_namespace(getenv(GIT_NAMESPACE_ENVIRONMENT)); @@ -60,13 +60,58 @@ char *mksnpath(char *buf, size_t n, const char *fmt, ...) return cleanup_path(buf); } +static int dir_prefix(const char *buf, const char *dir) +{ + int len = strlen(dir); + return !strncmp(buf, dir, len) && + (is_dir_sep(buf[len]) || buf[len] == '\0'); +} + +/* $buf =~ m|$dir/+$file| but without regex */ +static int is_dir_file(const char *buf, const char *dir, const char *file) +{ + int len = strlen(dir); + if (strncmp(buf, dir, len) || !is_dir_sep(buf[len])) + return 0; + while (is_dir_sep(buf[len])) + len++; + return !strcmp(buf + len, file); +} + +static void replace_dir(struct strbuf *buf, int len, const char *newdir) +{ + int newlen = strlen(newdir); + int need_sep = (buf->buf[len] && !is_dir_sep(buf->buf[len])) && + !is_dir_sep(newdir[newlen - 1]); + if (need_sep) + len--; /* keep one char, to be replaced with '/' */ + strbuf_splice(buf, 0, len, newdir, newlen); + if (need_sep) + buf->buf[newlen] = '/'; +} + +static void adjust_git_path(struct strbuf *buf, int git_dir_len) +{ + const char *base = buf->buf + git_dir_len; + if (git_graft_env && is_dir_file(base, "info", "grafts")) + strbuf_splice(buf, 0, buf->len, + get_graft_file(), strlen(get_graft_file())); + else if (git_index_env && !strcmp(base, "index")) + strbuf_splice(buf, 0, buf->len, + get_index_file(), strlen(get_index_file())); + else if (git_db_env && dir_prefix(base, "objects")) + replace_dir(buf, git_dir_len + 7, get_object_directory()); +} + static void do_git_path(struct strbuf *buf, const char *fmt, va_list args) { - const char *git_dir = get_git_dir(); - strbuf_addstr(buf, git_dir); + int gitdir_len; + strbuf_addstr(buf, get_git_dir()); if (buf->len && !is_dir_sep(buf->buf[buf->len - 1])) strbuf_addch(buf, '/'); + gitdir_len = buf->len; strbuf_vaddf(buf, fmt, args); + adjust_git_path(buf, gitdir_len); strbuf_cleanup_path(buf); } diff --git a/t/t0060-path-utils.sh b/t/t0060-path-utils.sh index c0143a0a70..33d2818d02 100755 --- a/t/t0060-path-utils.sh +++ b/t/t0060-path-utils.sh @@ -19,6 +19,14 @@ relative_path() { "test \"\$(test-path-utils relative_path '$1' '$2')\" = '$expected'" } +test_git_path() { + test_expect_success "git-path $1 $2 => $3" " + $1 git rev-parse --git-path $2 >actual && + echo $3 >expect && + test_cmp expect actual + " +} + # On Windows, we are using MSYS's bash, which mangles the paths. # Absolute paths are anchored at the MSYS installation directory, # which means that the path / accounts for this many characters: @@ -244,4 +252,15 @@ relative_path "<null>" "<empty>" ./ relative_path "<null>" "<null>" ./ relative_path "<null>" /foo/a/b ./ +test_git_path A=B info/grafts .git/info/grafts +test_git_path GIT_GRAFT_FILE=foo info/grafts foo +test_git_path GIT_GRAFT_FILE=foo info/////grafts foo +test_git_path GIT_INDEX_FILE=foo index foo +test_git_path GIT_INDEX_FILE=foo index/foo .git/index/foo +test_git_path GIT_INDEX_FILE=foo index2 .git/index2 +test_expect_success 'setup fake objects directory foo' 'mkdir foo' +test_git_path GIT_OBJECT_DIRECTORY=foo objects foo +test_git_path GIT_OBJECT_DIRECTORY=foo objects/foo foo/foo +test_git_path GIT_OBJECT_DIRECTORY=foo objects2 .git/objects2 + test_done |