+#define NO_THE_INDEX_COMPATIBILITY_MACROS
#include "cache.h"
+#include "config.h"
#include "dir.h"
#include "pathspec.h"
+#include "attr.h"
/*
* Finds which of the given pathspecs match items in the index.
* 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,
+ const struct index_state *istate,
+ char *seen)
{
int num_unmatched = 0, i;
* 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++) {
- struct cache_entry *ce = active_cache[i];
- match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen);
+ for (i = 0; i < istate->cache_nr; i++) {
+ const struct cache_entry *ce = istate->cache[i];
+ ce_path_match(ce, pathspec, seen);
}
}
* 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,
+ const struct index_state *istate)
+{
+ char *seen = xcalloc(pathspec->nr, 1);
+ add_pathspec_matches_against_index(pathspec, istate, seen);
+ return seen;
+}
+
+/*
+ * 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" },
+ { PATHSPEC_EXCLUDE, '!', "exclude" },
+ { PATHSPEC_ATTR, '\0', "attr" },
+};
+
+static void prefix_magic(struct strbuf *sb, int prefixlen, unsigned magic)
{
- char *seen;
int i;
+ strbuf_addstr(sb, ":(");
+ for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++)
+ if (magic & pathspec_magic[i].bit) {
+ if (sb->buf[sb->len - 1] != '(')
+ strbuf_addch(sb, ',');
+ strbuf_addstr(sb, pathspec_magic[i].name);
+ }
+ strbuf_addf(sb, ",prefix:%d)", prefixlen);
+}
- for (i = 0; pathspec[i]; i++)
- ; /* just counting */
- seen = xcalloc(i, 1);
- add_pathspec_matches_against_index(pathspec, seen, i);
- return seen;
+static size_t strcspn_escaped(const char *s, const char *stop)
+{
+ const char *i;
+
+ for (i = s; *i; i++) {
+ /* skip the escaped character */
+ if (i[0] == '\\' && i[1]) {
+ i++;
+ continue;
+ }
+
+ if (strchr(stop, *i))
+ break;
+ }
+ return i - s;
+}
+
+static inline int invalid_value_char(const char ch)
+{
+ if (isalnum(ch) || strchr(",-_", ch))
+ return 0;
+ return -1;
+}
+
+static char *attr_value_unescape(const char *value)
+{
+ const char *src;
+ char *dst, *ret;
+
+ ret = xmallocz(strlen(value));
+ for (src = value, dst = ret; *src; src++, dst++) {
+ if (*src == '\\') {
+ if (!src[1])
+ die(_("Escape character '\\' not allowed as "
+ "last character in attr value"));
+ src++;
+ }
+ if (invalid_value_char(*src))
+ die("cannot use '%c' for value matching", *src);
+ *dst = *src;
+ }
+ *dst = '\0';
+ return ret;
+}
+
+static void parse_pathspec_attr_match(struct pathspec_item *item, const char *value)
+{
+ struct string_list_item *si;
+ struct string_list list = STRING_LIST_INIT_DUP;
+
+ if (item->attr_check || item->attr_match)
+ die(_("Only one 'attr:' specification is allowed."));
+
+ if (!value || !*value)
+ die(_("attr spec must not be empty"));
+
+ string_list_split(&list, value, ' ', -1);
+ string_list_remove_empty_items(&list, 0);
+
+ item->attr_check = attr_check_alloc();
+ item->attr_match = xcalloc(list.nr, sizeof(struct attr_match));
+
+ for_each_string_list_item(si, &list) {
+ size_t attr_len;
+ char *attr_name;
+ const struct git_attr *a;
+
+ int j = item->attr_match_nr++;
+ const char *attr = si->string;
+ struct attr_match *am = &item->attr_match[j];
+
+ switch (*attr) {
+ case '!':
+ am->match_mode = MATCH_UNSPECIFIED;
+ attr++;
+ attr_len = strlen(attr);
+ break;
+ case '-':
+ am->match_mode = MATCH_UNSET;
+ attr++;
+ attr_len = strlen(attr);
+ break;
+ default:
+ attr_len = strcspn(attr, "=");
+ if (attr[attr_len] != '=')
+ am->match_mode = MATCH_SET;
+ else {
+ const char *v = &attr[attr_len + 1];
+ am->match_mode = MATCH_VALUE;
+ am->value = attr_value_unescape(v);
+ }
+ break;
+ }
+
+ attr_name = xmemdupz(attr, attr_len);
+ a = git_attr(attr_name);
+ if (!a)
+ die(_("invalid attribute name %s"), attr_name);
+
+ attr_check_append(item->attr_check, a);
+
+ free(attr_name);
+ }
+
+ if (item->attr_check->nr != item->attr_match_nr)
+ die("BUG: should have same number of entries");
+
+ string_list_clear(&list, 0);
+}
+
+static inline int get_literal_global(void)
+{
+ static int literal = -1;
+
+ if (literal < 0)
+ literal = git_env_bool(GIT_LITERAL_PATHSPECS_ENVIRONMENT, 0);
+
+ return literal;
+}
+
+static inline int get_glob_global(void)
+{
+ static int glob = -1;
+
+ if (glob < 0)
+ glob = git_env_bool(GIT_GLOB_PATHSPECS_ENVIRONMENT, 0);
+
+ return glob;
+}
+
+static inline int get_noglob_global(void)
+{
+ static int noglob = -1;
+
+ if (noglob < 0)
+ noglob = git_env_bool(GIT_NOGLOB_PATHSPECS_ENVIRONMENT, 0);
+
+ return noglob;
+}
+
+static inline int get_icase_global(void)
+{
+ static int icase = -1;
+
+ if (icase < 0)
+ icase = git_env_bool(GIT_ICASE_PATHSPECS_ENVIRONMENT, 0);
+
+ return icase;
+}
+
+static int get_global_magic(int element_magic)
+{
+ int global_magic = 0;
+
+ if (get_literal_global())
+ global_magic |= PATHSPEC_LITERAL;
+
+ /* --glob-pathspec is overridden by :(literal) */
+ if (get_glob_global() && !(element_magic & PATHSPEC_LITERAL))
+ global_magic |= PATHSPEC_GLOB;
+
+ if (get_glob_global() && get_noglob_global())
+ die(_("global 'glob' and 'noglob' pathspec settings are incompatible"));
+
+ if (get_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"));
+
+ /* --noglob-pathspec adds :(literal) _unless_ :(glob) is specified */
+ if (get_noglob_global() && !(element_magic & PATHSPEC_GLOB))
+ global_magic |= PATHSPEC_LITERAL;
+
+ return global_magic;
+}
+
+/*
+ * Parse the pathspec element looking for long magic
+ *
+ * saves all magic in 'magic'
+ * if prefix magic is used, save the prefix length in 'prefix_len'
+ * returns the position in 'elem' after all magic has been parsed
+ */
+static const char *parse_long_magic(unsigned *magic, int *prefix_len,
+ struct pathspec_item *item,
+ const char *elem)
+{
+ const char *pos;
+ const char *nextat;
+
+ for (pos = elem + 2; *pos && *pos != ')'; pos = nextat) {
+ size_t len = strcspn_escaped(pos, ",)");
+ int i;
+
+ if (pos[len] == ',')
+ nextat = pos + len + 1; /* handle ',' */
+ else
+ nextat = pos + len; /* handle ')' and '\0' */
+
+ if (!len)
+ continue;
+
+ if (starts_with(pos, "prefix:")) {
+ char *endptr;
+ *prefix_len = strtol(pos + 7, &endptr, 10);
+ if (endptr - pos != len)
+ die(_("invalid parameter for pathspec magic 'prefix'"));
+ continue;
+ }
+
+ if (starts_with(pos, "attr:")) {
+ char *attr_body = xmemdupz(pos + 5, len - 5);
+ parse_pathspec_attr_match(item, attr_body);
+ *magic |= PATHSPEC_ATTR;
+ free(attr_body);
+ continue;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) {
+ if (strlen(pathspec_magic[i].name) == len &&
+ !strncmp(pathspec_magic[i].name, pos, len)) {
+ *magic |= pathspec_magic[i].bit;
+ break;
+ }
+ }
+
+ if (ARRAY_SIZE(pathspec_magic) <= i)
+ die(_("Invalid pathspec magic '%.*s' in '%s'"),
+ (int) len, pos, elem);
+ }
+
+ if (*pos != ')')
+ die(_("Missing ')' at the end of pathspec magic in '%s'"),
+ elem);
+ pos++;
+
+ return pos;
}
/*
- * 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.
+ * Parse the pathspec element looking for short magic
+ *
+ * saves all magic in 'magic'
+ * returns the position in 'elem' after all magic has been parsed
*/
-const char *check_path_for_gitlink(const char *path)
-{
- int i, path_len = strlen(path);
- for (i = 0; i < active_nr; i++) {
- 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 */
- continue;
- if (path_len == ce_len + 1) {
- /* path refers to submodule;
- * strip trailing slash */
- return xstrndup(ce->name, ce_len);
- } else {
- die (_("Path '%s' is in submodule '%.*s'"),
- path, ce_len, ce->name);
+static const char *parse_short_magic(unsigned *magic, const char *elem)
+{
+ const char *pos;
+
+ for (pos = elem + 1; *pos && *pos != ':'; pos++) {
+ char ch = *pos;
+ int i;
+
+ /* Special case alias for '!' */
+ if (ch == '^') {
+ *magic |= PATHSPEC_EXCLUDE;
+ continue;
+ }
+
+ 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, elem);
}
- return path;
+
+ if (*pos == ':')
+ pos++;
+
+ return pos;
+}
+
+static const char *parse_element_magic(unsigned *magic, int *prefix_len,
+ struct pathspec_item *item,
+ const char *elem)
+{
+ if (elem[0] != ':' || get_literal_global())
+ return elem; /* nothing to do */
+ else if (elem[1] == '(')
+ /* longhand */
+ return parse_long_magic(magic, prefix_len, item, elem);
+ else
+ /* shorthand */
+ return parse_short_magic(magic, elem);
}
/*
- * Dies if the given path refers to a file inside a symlinked
- * directory in the index.
+ * Perform the initialization of a pathspec_item based on a pathspec element.
*/
-void die_if_path_beyond_symlink(const char *path, const char *prefix)
+static void init_pathspec_item(struct pathspec_item *item, unsigned flags,
+ const char *prefix, int prefixlen,
+ const char *elt)
+{
+ unsigned magic = 0, element_magic = 0;
+ const char *copyfrom = elt;
+ char *match;
+ int pathspec_prefix = -1;
+
+ item->attr_check = NULL;
+ item->attr_match = NULL;
+ item->attr_match_nr = 0;
+
+ /* PATHSPEC_LITERAL_PATH ignores magic */
+ if (flags & PATHSPEC_LITERAL_PATH) {
+ magic = PATHSPEC_LITERAL;
+ } else {
+ copyfrom = parse_element_magic(&element_magic,
+ &pathspec_prefix,
+ item,
+ elt);
+ magic |= element_magic;
+ magic |= get_global_magic(element_magic);
+ }
+
+ item->magic = 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);
+
+ /* Create match string which will be used for pathspec matching */
+ 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);
+ }
+
+ item->match = match;
+ item->len = strlen(item->match);
+ item->prefix = prefixlen;
+
+ /*
+ * Prefix the pathspec (keep all magic) and assign to
+ * original. Useful for passing to another command.
+ */
+ if ((flags & PATHSPEC_PREFIX_ORIGIN) &&
+ !get_literal_global()) {
+ struct strbuf sb = STRBUF_INIT;
+
+ /* Preserve the actual prefix length of each pattern */
+ prefix_magic(&sb, prefixlen, element_magic);
+
+ strbuf_addstr(&sb, match);
+ item->original = strbuf_detach(&sb, NULL);
+ } else {
+ item->original = xstrdup(elt);
+ }
+
+ 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;
+ }
+
+ /* sanity checks, pathspec matchers assume these are sane */
+ if (item->nowildcard_len > item->len ||
+ item->prefix > item->len) {
+ die ("BUG: error initializing pathspec_item");
+ }
+}
+
+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)
+{
+ struct strbuf sb = STRBUF_INIT;
+ int i;
+ for (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 (m->mnemonic)
+ strbuf_addf(&sb, _("'%s' (mnemonic: '%c')"),
+ m->name, m->mnemonic);
+ else
+ strbuf_addf(&sb, "'%s'", m->name);
+ }
+ /*
+ * 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);
+}
+
+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, nr_exclude = 0;
+
+ 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) {
+ if (flags & PATHSPEC_PREFER_FULL)
+ return;
+
+ if (!(flags & PATHSPEC_PREFER_CWD))
+ die("BUG: PATHSPEC_PREFER_CWD requires arguments");
+
+ pathspec->items = item = xcalloc(1, sizeof(*item));
+ item->match = xstrdup(prefix);
+ item->original = xstrdup(prefix);
+ item->nowildcard_len = item->len = strlen(prefix);
+ item->prefix = item->len;
+ pathspec->nr = 1;
+ return;
+ }
+
+ n = 0;
+ while (argv[n]) {
+ if (*argv[n] == '\0')
+ die("empty string is not a valid pathspec. "
+ "please use . instead if you meant to match all paths");
+ n++;
+ }
+
+ pathspec->nr = n;
+ ALLOC_ARRAY(pathspec->items, n + 1);
+ item = pathspec->items;
+ prefixlen = prefix ? strlen(prefix) : 0;
+
+ for (i = 0; i < n; i++) {
+ entry = argv[i];
+
+ init_pathspec_item(item + i, flags, prefix, prefixlen, entry);
+
+ if (item[i].magic & PATHSPEC_EXCLUDE)
+ nr_exclude++;
+ if (item[i].magic & magic_mask)
+ unsupported_magic(entry, item[i].magic & magic_mask);
+
+ 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 everything is an exclude pattern, add one positive pattern
+ * that matches everything. We allocated an extra one for this.
+ */
+ if (nr_exclude == n) {
+ int plen = (!(flags & PATHSPEC_PREFER_CWD)) ? 0 : prefixlen;
+ init_pathspec_item(item + n, 0, prefix, plen, "");
+ pathspec->nr++;
+ }
+
+ 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, pathspec_item_cmp);
+ }
+}
+
+void copy_pathspec(struct pathspec *dst, const struct pathspec *src)
+{
+ int i, j;
+
+ *dst = *src;
+ ALLOC_ARRAY(dst->items, dst->nr);
+ COPY_ARRAY(dst->items, src->items, dst->nr);
+
+ for (i = 0; i < dst->nr; i++) {
+ struct pathspec_item *d = &dst->items[i];
+ struct pathspec_item *s = &src->items[i];
+
+ d->match = xstrdup(s->match);
+ d->original = xstrdup(s->original);
+
+ ALLOC_ARRAY(d->attr_match, d->attr_match_nr);
+ COPY_ARRAY(d->attr_match, s->attr_match, d->attr_match_nr);
+ for (j = 0; j < d->attr_match_nr; j++) {
+ const char *value = s->attr_match[j].value;
+ d->attr_match[j].value = xstrdup_or_null(value);
+ }
+
+ d->attr_check = attr_check_dup(s->attr_check);
+ }
+}
+
+void clear_pathspec(struct pathspec *pathspec)
+{
+ int i, j;
+
+ for (i = 0; i < pathspec->nr; i++) {
+ free(pathspec->items[i].match);
+ free(pathspec->items[i].original);
+
+ for (j = 0; j < pathspec->items[i].attr_match_nr; j++)
+ free(pathspec->items[i].attr_match[j].value);
+ free(pathspec->items[i].attr_match);
+
+ if (pathspec->items[i].attr_check)
+ attr_check_free(pathspec->items[i].attr_check);
+ }
+
+ FREE_AND_NULL(pathspec->items);
+ pathspec->nr = 0;
}