fast-import: introduce "feature notes" command

[thirdparty/git.git] / setup.c

diff --git a/setup.c b/setup.c
index 01e1a6a7c5cb23909a8cc5050a1f7470abfff9eb..68605954b45435e5b98bcebd87cfcd74bc3d92d5 100644 (file)
--- a/setup.c
+++ b/setup.c
@@ -18,9 +18,12 @@ const char *prefix_path(const char *prefix, int len, const char *path)
        if (normalize_path_copy(sanitized, sanitized))
                goto error_out;
        if (is_absolute_path(orig)) {
+               size_t len, total;
                const char *work_tree = get_git_work_tree();
-               size_t len = strlen(work_tree);
-               size_t total = strlen(sanitized) + 1;
+               if (!work_tree)
+                       goto error_out;
+               len = strlen(work_tree);
+               total = strlen(sanitized) + 1;
                if (strncmp(sanitized, work_tree, len) ||
                    (sanitized[len] != '\0' && sanitized[len] != '/')) {
                error_out:
@@ -41,7 +44,7 @@ const char *prefix_path(const char *prefix, int len, const char *path)
 const char *prefix_filename(const char *pfx, int pfx_len, const char *arg)
 {
        static char path[PATH_MAX];
-#ifndef __MINGW32__
+#ifndef WIN32
        if (!pfx || !*pfx || is_absolute_path(arg))
                return arg;
        memcpy(path, pfx, pfx_len);
@@ -61,6 +64,31 @@ const char *prefix_filename(const char *pfx, int pfx_len, const char *arg)
        return path;
 }
 
+int check_filename(const char *prefix, const char *arg)
+{
+       const char *name;
+       struct stat st;
+
+       name = prefix ? prefix_filename(prefix, strlen(prefix), arg) : arg;
+       if (!lstat(name, &st))
+               return 1; /* file exists */
+       if (errno == ENOENT || errno == ENOTDIR)
+               return 0; /* file does not exist */
+       die_errno("failed to stat '%s'", arg);
+}
+
+static void NORETURN die_verify_filename(const char *prefix, const char *arg)
+{
+       unsigned char sha1[20];
+       unsigned mode;
+       /* try a detailed diagnostic ... */
+       get_sha1_with_mode_1(arg, sha1, &mode, 0, prefix);
+       /* ... or fall back the most general message. */
+       die("ambiguous argument '%s': unknown revision or path not in the working tree.\n"
+           "Use '--' to separate paths from revisions", arg);
+
+}
+
 /*
  * Verify a filename that we got as an argument for a pathspec
  * entry. Note that a filename that begins with "-" never verifies
@@ -70,18 +98,11 @@ const char *prefix_filename(const char *pfx, int pfx_len, const char *arg)
  */
 void verify_filename(const char *prefix, const char *arg)
 {
-       const char *name;
-       struct stat st;
-
        if (*arg == '-')
                die("bad flag '%s' used after filename", arg);
-       name = prefix ? prefix_filename(prefix, strlen(prefix), arg) : arg;
-       if (!lstat(name, &st))
+       if (check_filename(prefix, arg))
                return;
-       if (errno == ENOENT)
-               die("ambiguous argument '%s': unknown revision or path not in the working tree.\n"
-                   "Use '--' to separate paths from revisions", arg);
-       die_errno("failed to stat '%s'", arg);
+       die_verify_filename(prefix, arg);
 }
 
 /*
@@ -91,19 +112,14 @@ void verify_filename(const char *prefix, const char *arg)
  */
 void verify_non_filename(const char *prefix, const char *arg)
 {
-       const char *name;
-       struct stat st;
-
        if (!is_inside_work_tree() || is_inside_git_dir())
                return;
        if (*arg == '-')
                return; /* flag */
-       name = prefix ? prefix_filename(prefix, strlen(prefix), arg) : arg;
-       if (!lstat(name, &st))
-               die("ambiguous argument '%s': both revision and filename\n"
-                   "Use '--' to separate filenames from revisions", arg);
-       if (errno != ENOENT && errno != ENOTDIR)
-               die_errno("failed to stat '%s'", arg);
+       if (!check_filename(prefix, arg))
+               return;
+       die("ambiguous argument '%s': both revision and filename\n"
+           "Use '--' to separate filenames from revisions", arg);
 }
 
 const char **get_pathspec(const char *prefix, const char **pathspec)
@@ -192,7 +208,7 @@ int is_inside_work_tree(void)
 }
 
 /*
- * set_work_tree() is only ever called if you set GIT_DIR explicitely.
+ * set_work_tree() is only ever called if you set GIT_DIR explicitly.
  * The old behaviour (which we retain here) is to set the work tree root
  * to the cwd, unless overridden by the config, the command line, or
  * GIT_WORK_TREE.
@@ -249,6 +265,8 @@ static int check_repository_format_gently(int *nongit_ok)
 const char *read_gitfile_gently(const char *path)
 {
        char *buf;
+       char *dir;
+       const char *slash;
        struct stat st;
        int fd;
        size_t len;
@@ -273,9 +291,23 @@ const char *read_gitfile_gently(const char *path)
        if (len < 9)
                die("No path in gitfile: %s", path);
        buf[len] = '\0';
-       if (!is_git_directory(buf + 8))
-               die("Not a git repository: %s", buf + 8);
-       path = make_absolute_path(buf + 8);
+       dir = buf + 8;
+
+       if (!is_absolute_path(dir) && (slash = strrchr(path, '/'))) {
+               size_t pathlen = slash+1 - path;
+               size_t dirlen = pathlen + len - 8;
+               dir = xmalloc(dirlen + 1);
+               strncpy(dir, path, pathlen);
+               strncpy(dir + pathlen, buf + 8, len - 8);
+               dir[dirlen] = '\0';
+               free(buf);
+               buf = dir;
+       }
+
+       if (!is_git_directory(dir))
+               die("Not a git repository: %s", dir);
+       path = make_absolute_path(dir);
+
        free(buf);
        return path;
 }