/*
* Magic pathspec
*
- * NEEDSWORK: These need to be moved to dir.h or even to a new
- * pathspec.h when we restructure get_pathspec() users to use the
- * "struct pathspec" interface.
- *
* Possible future magic semantics include stuff like:
*
* { PATHSPEC_NOGLOB, '!', "noglob" },
* { PATHSPEC_REGEXP, '\0', "regexp" },
*
*/
-#define PATHSPEC_FROMTOP (1<<0)
static struct pathspec_magic {
unsigned bit;
/*
* Take an element of a pathspec and check for magic signatures.
- * Append the result to the prefix.
+ * 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.
* the prefix part must always match literally, and a single stupid
* string cannot express such a case.
*/
-static const char *prefix_pathspec(const char *prefix, int prefixlen, const char *elt)
+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;
+ unsigned magic = 0, short_magic = 0;
const char *copyfrom = elt;
+ char *match;
int i;
if (elt[0] != ':') {
break;
for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++)
if (pathspec_magic[i].mnemonic == ch) {
- magic |= pathspec_magic[i].bit;
+ short_magic |= pathspec_magic[i].bit;
break;
}
if (ARRAY_SIZE(pathspec_magic) <= i)
copyfrom++;
}
+ magic |= short_magic;
+ *p_short_magic = short_magic;
+
if (magic & PATHSPEC_FROMTOP)
- return xstrdup(copyfrom);
+ match = xstrdup(copyfrom);
else
- return prefix_path(prefix, prefixlen, copyfrom);
+ 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);
}
/*
* N.B. get_pathspec() is deprecated in favor of the "struct pathspec"
- * based interface - see pathspec_magic above.
+ * based interface - see pathspec.c:parse_pathspec().
*
* Arguments:
* - prefix - a path relative to the root of the working tree
*/
const char **get_pathspec(const char *prefix, const char **pathspec)
{
- const char *entry = *pathspec;
- const char **src, **dst;
- int prefixlen;
-
- if (!prefix && !entry)
- return NULL;
-
- if (!entry) {
- static const char *spec[2];
- spec[0] = prefix;
- spec[1] = NULL;
- return spec;
- }
-
- /* Otherwise we have to re-write the entries.. */
- src = pathspec;
- dst = pathspec;
- prefixlen = prefix ? strlen(prefix) : 0;
- while (*src) {
- *(dst++) = prefix_pathspec(prefix, prefixlen, *src);
- src++;
- }
- *dst = NULL;
- if (!*pathspec)
- return NULL;
- return pathspec;
+ struct pathspec ps;
+ parse_pathspec(&ps,
+ PATHSPEC_ALL_MAGIC & ~PATHSPEC_FROMTOP,
+ 0, prefix, pathspec);
+ return ps.raw;
}
void copy_pathspec(struct pathspec *dst, const struct pathspec *src)
projects / thirdparty / git.git / blobdiff