+ match = prefix_path(prefix, prefixlen, copyfrom);
+ *raw = item->match = match;
+ item->len = strlen(item->match);
+ 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));
+
+ /* No arguments, no prefix -> no pathspec */
+ if (!entry && !prefix)
+ return;
+
+ /* No arguments with prefix -> prefix pathspec */
+ if (!entry) {
+ static const char *raw[2];
+
+ pathspec->items = item = xmalloc(sizeof(*item));
+ memset(item, 0, sizeof(*item));
+ item->match = 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;
+ }
+
+ qsort(pathspec->items, pathspec->nr,
+ sizeof(struct pathspec_item), pathspec_item_cmp);