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-rw-r--r--pathspec.c449
1 files changed, 410 insertions, 39 deletions
diff --git a/pathspec.c b/pathspec.c
index 6ea0867..4b32cc3 100644
--- a/pathspec.c
+++ b/pathspec.c
@@ -15,8 +15,8 @@
* If seen[] has not already been written to, it may make sense
* to use find_pathspecs_matching_against_index() instead.
*/
-void add_pathspec_matches_against_index(const char **pathspec,
- char *seen, int specs)
+void add_pathspec_matches_against_index(const struct pathspec *pathspec,
+ char *seen)
{
int num_unmatched = 0, i;
@@ -26,14 +26,14 @@ void add_pathspec_matches_against_index(const char **pathspec,
* mistakenly think that the user gave a pathspec that did not match
* anything.
*/
- for (i = 0; i < specs; i++)
+ for (i = 0; i < pathspec->nr; i++)
if (!seen[i])
num_unmatched++;
if (!num_unmatched)
return;
for (i = 0; i < active_nr; i++) {
const struct cache_entry *ce = active_cache[i];
- match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen);
+ match_pathspec_depth(pathspec, ce->name, ce_namelen(ce), 0, seen);
}
}
@@ -45,57 +45,428 @@ void add_pathspec_matches_against_index(const char **pathspec,
* nature of the "closest" (i.e. most specific) matches which each of the
* given pathspecs achieves against all items in the index.
*/
-char *find_pathspecs_matching_against_index(const char **pathspec)
+char *find_pathspecs_matching_against_index(const struct pathspec *pathspec)
{
- char *seen;
- int i;
-
- for (i = 0; pathspec[i]; i++)
- ; /* just counting */
- seen = xcalloc(i, 1);
- add_pathspec_matches_against_index(pathspec, seen, i);
+ char *seen = xcalloc(pathspec->nr, 1);
+ add_pathspec_matches_against_index(pathspec, seen);
return seen;
}
/*
- * Check the index to see whether path refers to a submodule, or
- * something inside a submodule. If the former, returns the path with
- * any trailing slash stripped. If the latter, dies with an error
- * message.
+ * Magic pathspec
+ *
+ * Possible future magic semantics include stuff like:
+ *
+ * { 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" },
+ { PATHSPEC_LITERAL, 0, "literal" },
+ { PATHSPEC_GLOB, '\0', "glob" },
+ { PATHSPEC_ICASE, '\0', "icase" },
+};
+
+/*
+ * 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.
*/
-const char *check_path_for_gitlink(const char *path)
+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)
{
- int i, path_len = strlen(path);
- for (i = 0; i < active_nr; i++) {
- const struct cache_entry *ce = active_cache[i];
- if (S_ISGITLINK(ce->ce_mode)) {
- int ce_len = ce_namelen(ce);
- if (path_len <= ce_len || path[ce_len] != '/' ||
- memcmp(ce->name, path, ce_len))
- /* path does not refer to this
- * submodule or anything inside it */
+ static int literal_global = -1;
+ static int glob_global = -1;
+ static int noglob_global = -1;
+ static int icase_global = -1;
+ unsigned magic = 0, short_magic = 0, global_magic = 0;
+ const char *copyfrom = elt, *long_magic_end = NULL;
+ char *match;
+ int i, pathspec_prefix = -1;
+
+ if (literal_global < 0)
+ literal_global = git_env_bool(GIT_LITERAL_PATHSPECS_ENVIRONMENT, 0);
+ if (literal_global)
+ global_magic |= PATHSPEC_LITERAL;
+
+ if (glob_global < 0)
+ glob_global = git_env_bool(GIT_GLOB_PATHSPECS_ENVIRONMENT, 0);
+ if (glob_global)
+ global_magic |= PATHSPEC_GLOB;
+
+ if (noglob_global < 0)
+ noglob_global = git_env_bool(GIT_NOGLOB_PATHSPECS_ENVIRONMENT, 0);
+
+ if (glob_global && noglob_global)
+ die(_("global 'glob' and 'noglob' pathspec settings are incompatible"));
+
+
+ if (icase_global < 0)
+ icase_global = git_env_bool(GIT_ICASE_PATHSPECS_ENVIRONMENT, 0);
+ if (icase_global)
+ global_magic |= PATHSPEC_ICASE;
+
+ if ((global_magic & PATHSPEC_LITERAL) &&
+ (global_magic & ~PATHSPEC_LITERAL))
+ die(_("global 'literal' pathspec setting is incompatible "
+ "with all other global pathspec settings"));
+
+ if (elt[0] != ':' || literal_global) {
+ ; /* 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;
- if (path_len == ce_len + 1) {
- /* path refers to submodule;
- * strip trailing slash */
- return xstrndup(ce->name, ce_len);
+ 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 (!prefixcmp(copyfrom, "prefix:")) {
+ char *endptr;
+ pathspec_prefix = strtol(copyfrom + 7,
+ &endptr, 10);
+ if (endptr - copyfrom != len)
+ die(_("invalid parameter for pathspec magic 'prefix'"));
+ /* "i" would be wrong, but it does not matter */
+ 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);
+ long_magic_end = copyfrom;
+ 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;
+
+ /* --noglob-pathspec adds :(literal) _unless_ :(glob) is specifed */
+ if (noglob_global && !(magic & PATHSPEC_GLOB))
+ global_magic |= PATHSPEC_LITERAL;
+
+ /* --glob-pathspec is overriden by :(literal) */
+ if ((global_magic & PATHSPEC_GLOB) && (magic & PATHSPEC_LITERAL))
+ global_magic &= ~PATHSPEC_GLOB;
+
+ magic |= global_magic;
+
+ if (pathspec_prefix >= 0 &&
+ (prefixlen || (prefix && *prefix)))
+ die("BUG: 'prefix' magic is supposed to be used at worktree's root");
+
+ if ((magic & PATHSPEC_LITERAL) && (magic & PATHSPEC_GLOB))
+ die(_("%s: 'literal' and 'glob' are incompatible"), elt);
+
+ if (pathspec_prefix >= 0) {
+ match = xstrdup(copyfrom);
+ prefixlen = pathspec_prefix;
+ } else if (magic & PATHSPEC_FROMTOP) {
+ match = xstrdup(copyfrom);
+ prefixlen = 0;
+ } else {
+ match = prefix_path_gently(prefix, prefixlen, &prefixlen, copyfrom);
+ if (!match)
+ die(_("%s: '%s' is outside repository"), elt, copyfrom);
+ }
+ *raw = item->match = match;
+ /*
+ * Prefix the pathspec (keep all magic) and assign to
+ * original. Useful for passing to another command.
+ */
+ if (flags & PATHSPEC_PREFIX_ORIGIN) {
+ struct strbuf sb = STRBUF_INIT;
+ const char *start = elt;
+ if (prefixlen && !literal_global) {
+ /* Preserve the actual prefix length of each pattern */
+ if (long_magic_end) {
+ strbuf_add(&sb, start, long_magic_end - start);
+ strbuf_addf(&sb, ",prefix:%d", prefixlen);
+ start = long_magic_end;
} else {
- die (_("Path '%s' is in submodule '%.*s'"),
- path, ce_len, ce->name);
+ if (*start == ':')
+ start++;
+ strbuf_addf(&sb, ":(prefix:%d)", prefixlen);
}
}
+ strbuf_add(&sb, start, copyfrom - start);
+ strbuf_addstr(&sb, match);
+ item->original = strbuf_detach(&sb, NULL);
+ } else
+ item->original = elt;
+ item->len = strlen(item->match);
+ item->prefix = prefixlen;
+
+ 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 (flags & PATHSPEC_STRIP_SUBMODULE_SLASH_EXPENSIVE)
+ for (i = 0; i < active_nr; i++) {
+ struct cache_entry *ce = active_cache[i];
+ int ce_len = ce_namelen(ce);
+
+ if (!S_ISGITLINK(ce->ce_mode))
+ continue;
+
+ if (item->len <= ce_len || match[ce_len] != '/' ||
+ memcmp(ce->name, match, ce_len))
+ continue;
+ if (item->len == ce_len + 1) {
+ /* strip trailing slash */
+ item->len--;
+ match[item->len] = '\0';
+ } else
+ die (_("Pathspec '%s' is in submodule '%.*s'"),
+ elt, ce_len, ce->name);
+ }
+
+ if (magic & PATHSPEC_LITERAL)
+ item->nowildcard_len = item->len;
+ else {
+ item->nowildcard_len = simple_length(item->match);
+ if (item->nowildcard_len < prefixlen)
+ item->nowildcard_len = prefixlen;
+ }
+ item->flags = 0;
+ if (magic & PATHSPEC_GLOB) {
+ /*
+ * FIXME: should we enable ONESTAR in _GLOB for
+ * pattern "* * / * . c"?
+ */
+ } else {
+ if (item->nowildcard_len < item->len &&
+ item->match[item->nowildcard_len] == '*' &&
+ no_wildcard(item->match + item->nowildcard_len + 1))
+ item->flags |= PATHSPEC_ONESTAR;
}
- return path;
+
+ /* sanity checks, pathspec matchers assume these are sane */
+ assert(item->nowildcard_len <= item->len &&
+ item->prefix <= item->len);
+ 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);
}
/*
- * Dies if the given path refers to a file inside a symlinked
- * directory in the index.
+ * Given command line arguments and a prefix, convert the input to
+ * pathspec. die() if any magic in magic_mask is used.
*/
-void die_if_path_beyond_symlink(const char *path, const char *prefix)
+void parse_pathspec(struct pathspec *pathspec,
+ unsigned magic_mask, unsigned flags,
+ const char *prefix, const char **argv)
{
- if (has_symlink_leading_path(path, strlen(path))) {
- int len = prefix ? strlen(prefix) : 0;
- die(_("'%s' is beyond a symbolic link"), path + len);
+ 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);
+ item->prefix = item->len;
+ 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 ((flags & PATHSPEC_SYMLINK_LEADING_PATH) &&
+ has_symlink_leading_path(item[i].match, item[i].len)) {
+ die(_("pathspec '%s' is beyond a symbolic link"), entry);
+ }
+
+ if (item[i].nowildcard_len < item[i].len)
+ pathspec->has_wildcard = 1;
+ pathspec->magic |= item[i].magic;
+ }
+
+
+ if (pathspec->magic & PATHSPEC_MAXDEPTH) {
+ if (flags & PATHSPEC_KEEP_ORDER)
+ die("BUG: PATHSPEC_MAXDEPTH_VALID and PATHSPEC_KEEP_ORDER are incompatible");
+ 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_LITERAL),
+ 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);
+}
+
+void free_pathspec(struct pathspec *pathspec)
+{
+ free(pathspec->items);
+ pathspec->items = NULL;
}