"'git <command> [<revision>...] -- [<file>...]'", arg);
}
-/*
- * 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_ICASE, '\0', "icase" },
- * { PATHSPEC_RECURSIVE, '*', "recursive" },
- * { PATHSPEC_REGEXP, '\0', "regexp" },
- *
- */
-#define PATHSPEC_FROMTOP (1<<0)
-
-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.
- *
- * 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 const char *prefix_pathspec(const char *prefix, int prefixlen, const char *elt)
-{
- unsigned magic = 0;
- const char *copyfrom = elt;
- 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) {
- magic |= pathspec_magic[i].bit;
- break;
- }
- if (ARRAY_SIZE(pathspec_magic) <= i)
- die("Unimplemented pathspec magic '%c' in '%s'",
- ch, elt);
- }
- if (*copyfrom == ':')
- copyfrom++;
- }
-
- if (magic & PATHSPEC_FROMTOP)
- return xstrdup(copyfrom);
- else
- return prefix_path(prefix, prefixlen, copyfrom);
-}
-
-/*
- * N.B. get_pathspec() is deprecated in favor of the "struct pathspec"
- * based interface - see pathspec_magic above.
- *
- * 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)
-{
- 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;
-}
/*
* Test if it looks like we're at a git directory.