reset: allow reset on unborn branch

diff --git a/dir.c b/dir.c
index ee8e7115a8a37ca5c096dc3548b13e3761e4cac5..095ea7ebabfa25f1ff1aba199c09daaac984dbaa 100644 (file)
--- a/dir.c
+++ b/dir.c
@@ -34,10 +34,33 @@ int fnmatch_icase(const char *pattern, const char *string, int flags)
        return fnmatch(pattern, string, flags | (ignore_case ? FNM_CASEFOLD : 0));
 }
 
+inline int git_fnmatch(const char *pattern, const char *string,
+                      int flags, int prefix)
+{
+       int fnm_flags = 0;
+       if (flags & GFNM_PATHNAME)
+               fnm_flags |= FNM_PATHNAME;
+       if (prefix > 0) {
+               if (strncmp(pattern, string, prefix))
+                       return FNM_NOMATCH;
+               pattern += prefix;
+               string += prefix;
+       }
+       if (flags & GFNM_ONESTAR) {
+               int pattern_len = strlen(++pattern);
+               int string_len = strlen(string);
+               return string_len < pattern_len ||
+                      strcmp(pattern,
+                             string + string_len - pattern_len);
+       }
+       return fnmatch(pattern, string, fnm_flags);
+}
+
 static size_t common_prefix_len(const char **pathspec)
 {
        const char *n, *first;
        size_t max = 0;
+       int literal = limit_pathspec_to_literal();
 
        if (!pathspec)
                return max;
@@ -47,7 +70,7 @@ static size_t common_prefix_len(const char **pathspec)
                size_t i, len = 0;
                for (i = 0; first == n || i < max; i++) {
                        char c = n[i];
-                       if (!c || c != first[i] || is_glob_special(c))
+                       if (!c || c != first[i] || (!literal && is_glob_special(c)))
                                break;
                        if (c == '/')
                                len = i + 1;
@@ -117,6 +140,7 @@ int within_depth(const char *name, int namelen,
 static int match_one(const char *match, const char *name, int namelen)
 {
        int matchlen;
+       int literal = limit_pathspec_to_literal();
 
        /* If the match was just the prefix, we matched */
        if (!*match)
@@ -126,7 +150,7 @@ static int match_one(const char *match, const char *name, int namelen)
                for (;;) {
                        unsigned char c1 = tolower(*match);
                        unsigned char c2 = tolower(*name);
-                       if (c1 == '\0' || is_glob_special(c1))
+                       if (c1 == '\0' || (!literal && is_glob_special(c1)))
                                break;
                        if (c1 != c2)
                                return 0;
@@ -138,7 +162,7 @@ static int match_one(const char *match, const char *name, int namelen)
                for (;;) {
                        unsigned char c1 = *match;
                        unsigned char c2 = *name;
-                       if (c1 == '\0' || is_glob_special(c1))
+                       if (c1 == '\0' || (!literal && is_glob_special(c1)))
                                break;
                        if (c1 != c2)
                                return 0;
@@ -148,14 +172,16 @@ static int match_one(const char *match, const char *name, int namelen)
                }
        }
 
-
        /*
         * If we don't match the matchstring exactly,
         * we need to match by fnmatch
         */
        matchlen = strlen(match);
-       if (strncmp_icase(match, name, matchlen))
+       if (strncmp_icase(match, name, matchlen)) {
+               if (literal)
+                       return 0;
                return !fnmatch_icase(match, name, 0) ? MATCHED_FNMATCH : 0;
+       }
 
        if (namelen == matchlen)
                return MATCHED_EXACTLY;
@@ -230,7 +256,10 @@ static int match_pathspec_item(const struct pathspec_item *item, int prefix,
                        return MATCHED_RECURSIVELY;
        }
 
-       if (item->use_wildcard && !fnmatch(match, name, 0))
+       if (item->nowildcard_len < item->len &&
+           !git_fnmatch(match, name,
+                        item->flags & PATHSPEC_ONESTAR ? GFNM_ONESTAR : 0,
+                        item->nowildcard_len - prefix))
                return MATCHED_FNMATCH;
 
        return 0;
@@ -424,6 +453,8 @@ int add_excludes_from_file_to_list(const char *fname,
 
        fd = open(fname, O_RDONLY);
        if (fd < 0 || fstat(fd, &st) < 0) {
+               if (errno != ENOENT)
+                       warn_on_inaccessible(fname);
                if (0 <= fd)
                        close(fd);
                if (!check_index ||
@@ -1363,12 +1394,17 @@ int remove_dir_recursively(struct strbuf *path, int flag)
 void setup_standard_excludes(struct dir_struct *dir)
 {
        const char *path;
+       char *xdg_path;
 
        dir->exclude_per_dir = ".gitignore";
        path = git_path("info/exclude");
-       if (!access(path, R_OK))
+       if (!excludes_file) {
+               home_config_paths(NULL, &xdg_path, "ignore");
+               excludes_file = xdg_path;
+       }
+       if (!access_or_warn(path, R_OK))
                add_excludes_from_file(dir, path);
-       if (excludes_file && !access(excludes_file, R_OK))
+       if (excludes_file && !access_or_warn(excludes_file, R_OK))
                add_excludes_from_file(dir, excludes_file);
 }
 
@@ -1422,9 +1458,18 @@ int init_pathspec(struct pathspec *pathspec, const char **paths)
 
                item->match = path;
                item->len = strlen(path);
-               item->use_wildcard = !no_wildcard(path);
-               if (item->use_wildcard)
-                       pathspec->has_wildcard = 1;
+               item->flags = 0;
+               if (limit_pathspec_to_literal()) {
+                       item->nowildcard_len = item->len;
+               } else {
+                       item->nowildcard_len = simple_length(path);
+                       if (item->nowildcard_len < item->len) {
+                               pathspec->has_wildcard = 1;
+                               if (path[item->nowildcard_len] == '*' &&
+                                   no_wildcard(path + item->nowildcard_len + 1))
+                                       item->flags |= PATHSPEC_ONESTAR;
+                       }
+               }
        }
 
        qsort(pathspec->items, pathspec->nr,
@@ -1438,3 +1483,11 @@ void free_pathspec(struct pathspec *pathspec)
        free(pathspec->items);
        pathspec->items = NULL;
 }
+
+int limit_pathspec_to_literal(void)
+{
+       static int flag = -1;
+       if (flag < 0)
+               flag = git_env_bool(GIT_LITERAL_PATHSPECS_ENVIRONMENT, 0);
+       return flag;
+}