die(_("'%s' is beyond a symbolic link"), path + len);
}
}
+
+/*
+ * Magic pathspec
+ *
+ * Possible future magic semantics include stuff like:
+ *
+ * { PATHSPEC_NOGLOB, '!', "noglob" },
+ * { PATHSPEC_ICASE, '\0', "icase" },
+ * { PATHSPEC_RECURSIVE, '*', "recursive" },
+ * { PATHSPEC_REGEXP, '\0', "regexp" },
+ *
+ */
+
+static struct pathspec_magic {
+ unsigned bit;
+ char mnemonic; /* this cannot be ':'! */
+ const char *name;
+} pathspec_magic[] = {
+ { PATHSPEC_FROMTOP, '/', "top" },
+};
+
+/*
+ * Take an element of a pathspec and check for magic signatures.
+ * Append the result to the prefix. Return the magic bitmap.
+ *
+ * For now, we only parse the syntax and throw out anything other than
+ * "top" magic.
+ *
+ * NEEDSWORK: This needs to be rewritten when we start migrating
+ * get_pathspec() users to use the "struct pathspec" interface. For
+ * example, a pathspec element may be marked as case-insensitive, but
+ * the prefix part must always match literally, and a single stupid
+ * string cannot express such a case.
+ */
+static unsigned prefix_pathspec(struct pathspec_item *item,
+ unsigned *p_short_magic,
+ const char **raw, unsigned flags,
+ const char *prefix, int prefixlen,
+ const char *elt)
+{
+ unsigned magic = 0, short_magic = 0;
+ const char *copyfrom = elt;
+ char *match;
+ int i;
+
+ if (elt[0] != ':') {
+ ; /* nothing to do */
+ } else if (elt[1] == '(') {
+ /* longhand */
+ const char *nextat;
+ for (copyfrom = elt + 2;
+ *copyfrom && *copyfrom != ')';
+ copyfrom = nextat) {
+ size_t len = strcspn(copyfrom, ",)");
+ if (copyfrom[len] == ',')
+ nextat = copyfrom + len + 1;
+ else
+ /* handle ')' and '\0' */
+ nextat = copyfrom + len;
+ if (!len)
+ continue;
+ for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++)
+ if (strlen(pathspec_magic[i].name) == len &&
+ !strncmp(pathspec_magic[i].name, copyfrom, len)) {
+ magic |= pathspec_magic[i].bit;
+ break;
+ }
+ if (ARRAY_SIZE(pathspec_magic) <= i)
+ die(_("Invalid pathspec magic '%.*s' in '%s'"),
+ (int) len, copyfrom, elt);
+ }
+ if (*copyfrom != ')')
+ die(_("Missing ')' at the end of pathspec magic in '%s'"), elt);
+ copyfrom++;
+ } else {
+ /* shorthand */
+ for (copyfrom = elt + 1;
+ *copyfrom && *copyfrom != ':';
+ copyfrom++) {
+ char ch = *copyfrom;
+
+ if (!is_pathspec_magic(ch))
+ break;
+ for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++)
+ if (pathspec_magic[i].mnemonic == ch) {
+ short_magic |= pathspec_magic[i].bit;
+ break;
+ }
+ if (ARRAY_SIZE(pathspec_magic) <= i)
+ die(_("Unimplemented pathspec magic '%c' in '%s'"),
+ ch, elt);
+ }
+ if (*copyfrom == ':')
+ copyfrom++;
+ }
+
+ magic |= short_magic;
+ *p_short_magic = short_magic;
+
+ if (magic & PATHSPEC_FROMTOP)
+ match = xstrdup(copyfrom);
+ else
+ match = prefix_path(prefix, prefixlen, copyfrom);
+ *raw = item->match = match;
+ item->original = elt;
+ item->len = strlen(item->match);
+
+ if ((flags & PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP) &&
+ (item->len >= 1 && item->match[item->len - 1] == '/') &&
+ (i = cache_name_pos(item->match, item->len - 1)) >= 0 &&
+ S_ISGITLINK(active_cache[i]->ce_mode)) {
+ item->len--;
+ match[item->len] = '\0';
+ }
+
+ if (limit_pathspec_to_literal())
+ item->nowildcard_len = item->len;
+ else
+ item->nowildcard_len = simple_length(item->match);
+ item->flags = 0;
+ if (item->nowildcard_len < item->len &&
+ item->match[item->nowildcard_len] == '*' &&
+ no_wildcard(item->match + item->nowildcard_len + 1))
+ item->flags |= PATHSPEC_ONESTAR;
+ return magic;
+}
+
+static int pathspec_item_cmp(const void *a_, const void *b_)
+{
+ struct pathspec_item *a, *b;
+
+ a = (struct pathspec_item *)a_;
+ b = (struct pathspec_item *)b_;
+ return strcmp(a->match, b->match);
+}
+
+static void NORETURN unsupported_magic(const char *pattern,
+ unsigned magic,
+ unsigned short_magic)
+{
+ struct strbuf sb = STRBUF_INIT;
+ int i, n;
+ for (n = i = 0; i < ARRAY_SIZE(pathspec_magic); i++) {
+ const struct pathspec_magic *m = pathspec_magic + i;
+ if (!(magic & m->bit))
+ continue;
+ if (sb.len)
+ strbuf_addstr(&sb, " ");
+ if (short_magic & m->bit)
+ strbuf_addf(&sb, "'%c'", m->mnemonic);
+ else
+ strbuf_addf(&sb, "'%s'", m->name);
+ n++;
+ }
+ /*
+ * We may want to substitute "this command" with a command
+ * name. E.g. when add--interactive dies when running
+ * "checkout -p"
+ */
+ die(_("%s: pathspec magic not supported by this command: %s"),
+ pattern, sb.buf);
+}
+
+/*
+ * Given command line arguments and a prefix, convert the input to
+ * pathspec. die() if any magic in magic_mask is used.
+ */
+void parse_pathspec(struct pathspec *pathspec,
+ unsigned magic_mask, unsigned flags,
+ const char *prefix, const char **argv)
+{
+ struct pathspec_item *item;
+ const char *entry = argv ? *argv : NULL;
+ int i, n, prefixlen;
+
+ memset(pathspec, 0, sizeof(*pathspec));
+
+ if (flags & PATHSPEC_MAXDEPTH_VALID)
+ pathspec->magic |= PATHSPEC_MAXDEPTH;
+
+ /* No arguments, no prefix -> no pathspec */
+ if (!entry && !prefix)
+ return;
+
+ if ((flags & PATHSPEC_PREFER_CWD) &&
+ (flags & PATHSPEC_PREFER_FULL))
+ die("BUG: PATHSPEC_PREFER_CWD and PATHSPEC_PREFER_FULL are incompatible");
+
+ /* No arguments with prefix -> prefix pathspec */
+ if (!entry) {
+ static const char *raw[2];
+
+ if (flags & PATHSPEC_PREFER_FULL)
+ return;
+
+ if (!(flags & PATHSPEC_PREFER_CWD))
+ die("BUG: PATHSPEC_PREFER_CWD requires arguments");
+
+ pathspec->items = item = xmalloc(sizeof(*item));
+ memset(item, 0, sizeof(*item));
+ item->match = prefix;
+ item->original = prefix;
+ item->nowildcard_len = item->len = strlen(prefix);
+ raw[0] = prefix;
+ raw[1] = NULL;
+ pathspec->nr = 1;
+ pathspec->raw = raw;
+ return;
+ }
+
+ n = 0;
+ while (argv[n])
+ n++;
+
+ pathspec->nr = n;
+ pathspec->items = item = xmalloc(sizeof(*item) * n);
+ pathspec->raw = argv;
+ prefixlen = prefix ? strlen(prefix) : 0;
+
+ for (i = 0; i < n; i++) {
+ unsigned short_magic;
+ entry = argv[i];
+
+ item[i].magic = prefix_pathspec(item + i, &short_magic,
+ argv + i, flags,
+ prefix, prefixlen, entry);
+ if (item[i].magic & magic_mask)
+ unsupported_magic(entry,
+ item[i].magic & magic_mask,
+ short_magic);
+ if (item[i].nowildcard_len < item[i].len)
+ pathspec->has_wildcard = 1;
+ pathspec->magic |= item[i].magic;
+ }
+
+ if (pathspec->magic & PATHSPEC_MAXDEPTH)
+ qsort(pathspec->items, pathspec->nr,
+ sizeof(struct pathspec_item), pathspec_item_cmp);
+}
+
+/*
+ * N.B. get_pathspec() is deprecated in favor of the "struct pathspec"
+ * based interface - see pathspec.c:parse_pathspec().
+ *
+ * Arguments:
+ * - prefix - a path relative to the root of the working tree
+ * - pathspec - a list of paths underneath the prefix path
+ *
+ * Iterates over pathspec, prepending each path with prefix,
+ * and return the resulting list.
+ *
+ * If pathspec is empty, return a singleton list containing prefix.
+ *
+ * If pathspec and prefix are both empty, return an empty list.
+ *
+ * This is typically used by built-in commands such as add.c, in order
+ * to normalize argv arguments provided to the built-in into a list of
+ * paths to process, all relative to the root of the working tree.
+ */
+const char **get_pathspec(const char *prefix, const char **pathspec)
+{
+ struct pathspec ps;
+ parse_pathspec(&ps,
+ PATHSPEC_ALL_MAGIC & ~PATHSPEC_FROMTOP,
+ PATHSPEC_PREFER_CWD,
+ prefix, pathspec);
+ return ps.raw;
+}
+
+void copy_pathspec(struct pathspec *dst, const struct pathspec *src)
+{
+ *dst = *src;
+ dst->items = xmalloc(sizeof(struct pathspec_item) * dst->nr);
+ memcpy(dst->items, src->items,
+ sizeof(struct pathspec_item) * dst->nr);
+}