merge(third_party/git): Merge squashed git subtree at v2.23.0
Merge commit '1b593e1ea4' as 'third_party/git'
This commit is contained in:
Vincent Ambo
commit
7ef0d62730
3629 changed files with 1139935 additions and 0 deletions
698
third_party/git/pathspec.c
vendored
Normal file
698
third_party/git/pathspec.c
vendored
Normal file
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@ -0,0 +1,698 @@
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#include "cache.h"
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#include "config.h"
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#include "dir.h"
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#include "pathspec.h"
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#include "attr.h"
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/*
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* Finds which of the given pathspecs match items in the index.
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*
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* For each pathspec, sets the corresponding entry in the seen[] array
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* (which should be specs items long, i.e. the same size as pathspec)
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* to the nature of the "closest" (i.e. most specific) match found for
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* that pathspec in the index, if it was a closer type of match than
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* the existing entry. As an optimization, matching is skipped
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* altogether if seen[] already only contains non-zero entries.
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*
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* If seen[] has not already been written to, it may make sense
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* to use find_pathspecs_matching_against_index() instead.
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*/
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void add_pathspec_matches_against_index(const struct pathspec *pathspec,
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const struct index_state *istate,
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char *seen)
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{
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int num_unmatched = 0, i;
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/*
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* Since we are walking the index as if we were walking the directory,
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* we have to mark the matched pathspec as seen; otherwise we will
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* mistakenly think that the user gave a pathspec that did not match
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* anything.
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*/
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for (i = 0; i < pathspec->nr; i++)
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if (!seen[i])
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num_unmatched++;
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if (!num_unmatched)
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return;
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for (i = 0; i < istate->cache_nr; i++) {
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const struct cache_entry *ce = istate->cache[i];
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ce_path_match(istate, ce, pathspec, seen);
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}
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}
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/*
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* Finds which of the given pathspecs match items in the index.
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*
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* This is a one-shot wrapper around add_pathspec_matches_against_index()
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* which allocates, populates, and returns a seen[] array indicating the
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* nature of the "closest" (i.e. most specific) matches which each of the
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* given pathspecs achieves against all items in the index.
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*/
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char *find_pathspecs_matching_against_index(const struct pathspec *pathspec,
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const struct index_state *istate)
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{
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char *seen = xcalloc(pathspec->nr, 1);
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add_pathspec_matches_against_index(pathspec, istate, seen);
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return seen;
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}
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/*
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* Magic pathspec
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*
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* Possible future magic semantics include stuff like:
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*
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* { PATHSPEC_RECURSIVE, '*', "recursive" },
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* { PATHSPEC_REGEXP, '\0', "regexp" },
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*
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*/
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static struct pathspec_magic {
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unsigned bit;
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char mnemonic; /* this cannot be ':'! */
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const char *name;
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} pathspec_magic[] = {
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{ PATHSPEC_FROMTOP, '/', "top" },
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{ PATHSPEC_LITERAL, '\0', "literal" },
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{ PATHSPEC_GLOB, '\0', "glob" },
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{ PATHSPEC_ICASE, '\0', "icase" },
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{ PATHSPEC_EXCLUDE, '!', "exclude" },
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{ PATHSPEC_ATTR, '\0', "attr" },
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};
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static void prefix_magic(struct strbuf *sb, int prefixlen, unsigned magic)
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{
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int i;
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strbuf_addstr(sb, ":(");
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for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++)
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if (magic & pathspec_magic[i].bit) {
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if (sb->buf[sb->len - 1] != '(')
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strbuf_addch(sb, ',');
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strbuf_addstr(sb, pathspec_magic[i].name);
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}
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strbuf_addf(sb, ",prefix:%d)", prefixlen);
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}
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static size_t strcspn_escaped(const char *s, const char *stop)
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{
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const char *i;
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for (i = s; *i; i++) {
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/* skip the escaped character */
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if (i[0] == '\\' && i[1]) {
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i++;
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continue;
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}
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if (strchr(stop, *i))
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break;
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}
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return i - s;
|
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}
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static inline int invalid_value_char(const char ch)
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{
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if (isalnum(ch) || strchr(",-_", ch))
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return 0;
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return -1;
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}
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static char *attr_value_unescape(const char *value)
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{
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const char *src;
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char *dst, *ret;
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ret = xmallocz(strlen(value));
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for (src = value, dst = ret; *src; src++, dst++) {
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if (*src == '\\') {
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if (!src[1])
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die(_("Escape character '\\' not allowed as "
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"last character in attr value"));
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src++;
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}
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if (invalid_value_char(*src))
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die("cannot use '%c' for value matching", *src);
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*dst = *src;
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}
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*dst = '\0';
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return ret;
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}
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static void parse_pathspec_attr_match(struct pathspec_item *item, const char *value)
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{
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struct string_list_item *si;
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struct string_list list = STRING_LIST_INIT_DUP;
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if (item->attr_check || item->attr_match)
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die(_("Only one 'attr:' specification is allowed."));
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if (!value || !*value)
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die(_("attr spec must not be empty"));
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string_list_split(&list, value, ' ', -1);
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string_list_remove_empty_items(&list, 0);
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item->attr_check = attr_check_alloc();
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item->attr_match = xcalloc(list.nr, sizeof(struct attr_match));
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for_each_string_list_item(si, &list) {
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size_t attr_len;
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char *attr_name;
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const struct git_attr *a;
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int j = item->attr_match_nr++;
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const char *attr = si->string;
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struct attr_match *am = &item->attr_match[j];
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switch (*attr) {
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case '!':
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am->match_mode = MATCH_UNSPECIFIED;
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attr++;
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attr_len = strlen(attr);
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break;
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case '-':
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am->match_mode = MATCH_UNSET;
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attr++;
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attr_len = strlen(attr);
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break;
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default:
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attr_len = strcspn(attr, "=");
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if (attr[attr_len] != '=')
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am->match_mode = MATCH_SET;
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else {
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const char *v = &attr[attr_len + 1];
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am->match_mode = MATCH_VALUE;
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am->value = attr_value_unescape(v);
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}
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break;
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}
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attr_name = xmemdupz(attr, attr_len);
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a = git_attr(attr_name);
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if (!a)
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die(_("invalid attribute name %s"), attr_name);
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attr_check_append(item->attr_check, a);
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free(attr_name);
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}
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if (item->attr_check->nr != item->attr_match_nr)
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BUG("should have same number of entries");
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string_list_clear(&list, 0);
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}
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static inline int get_literal_global(void)
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{
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static int literal = -1;
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if (literal < 0)
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literal = git_env_bool(GIT_LITERAL_PATHSPECS_ENVIRONMENT, 0);
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return literal;
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}
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static inline int get_glob_global(void)
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{
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static int glob = -1;
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if (glob < 0)
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glob = git_env_bool(GIT_GLOB_PATHSPECS_ENVIRONMENT, 0);
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return glob;
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}
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static inline int get_noglob_global(void)
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{
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static int noglob = -1;
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if (noglob < 0)
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noglob = git_env_bool(GIT_NOGLOB_PATHSPECS_ENVIRONMENT, 0);
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return noglob;
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}
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static inline int get_icase_global(void)
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{
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static int icase = -1;
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if (icase < 0)
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icase = git_env_bool(GIT_ICASE_PATHSPECS_ENVIRONMENT, 0);
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return icase;
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}
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static int get_global_magic(int element_magic)
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{
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int global_magic = 0;
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if (get_literal_global())
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global_magic |= PATHSPEC_LITERAL;
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/* --glob-pathspec is overridden by :(literal) */
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if (get_glob_global() && !(element_magic & PATHSPEC_LITERAL))
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global_magic |= PATHSPEC_GLOB;
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if (get_glob_global() && get_noglob_global())
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die(_("global 'glob' and 'noglob' pathspec settings are incompatible"));
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if (get_icase_global())
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global_magic |= PATHSPEC_ICASE;
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if ((global_magic & PATHSPEC_LITERAL) &&
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(global_magic & ~PATHSPEC_LITERAL))
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die(_("global 'literal' pathspec setting is incompatible "
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"with all other global pathspec settings"));
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/* --noglob-pathspec adds :(literal) _unless_ :(glob) is specified */
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if (get_noglob_global() && !(element_magic & PATHSPEC_GLOB))
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global_magic |= PATHSPEC_LITERAL;
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return global_magic;
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}
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/*
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* Parse the pathspec element looking for long magic
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*
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* saves all magic in 'magic'
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* if prefix magic is used, save the prefix length in 'prefix_len'
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* returns the position in 'elem' after all magic has been parsed
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*/
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static const char *parse_long_magic(unsigned *magic, int *prefix_len,
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struct pathspec_item *item,
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const char *elem)
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{
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const char *pos;
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const char *nextat;
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for (pos = elem + 2; *pos && *pos != ')'; pos = nextat) {
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size_t len = strcspn_escaped(pos, ",)");
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int i;
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if (pos[len] == ',')
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nextat = pos + len + 1; /* handle ',' */
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else
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nextat = pos + len; /* handle ')' and '\0' */
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if (!len)
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continue;
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if (starts_with(pos, "prefix:")) {
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char *endptr;
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*prefix_len = strtol(pos + 7, &endptr, 10);
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if (endptr - pos != len)
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die(_("invalid parameter for pathspec magic 'prefix'"));
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continue;
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}
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if (starts_with(pos, "attr:")) {
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char *attr_body = xmemdupz(pos + 5, len - 5);
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parse_pathspec_attr_match(item, attr_body);
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*magic |= PATHSPEC_ATTR;
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free(attr_body);
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continue;
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}
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for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) {
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if (strlen(pathspec_magic[i].name) == len &&
|
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!strncmp(pathspec_magic[i].name, pos, len)) {
|
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*magic |= pathspec_magic[i].bit;
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break;
|
||||
}
|
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}
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|
||||
if (ARRAY_SIZE(pathspec_magic) <= i)
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||||
die(_("Invalid pathspec magic '%.*s' in '%s'"),
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(int) len, pos, elem);
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}
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||||
|
||||
if (*pos != ')')
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die(_("Missing ')' at the end of pathspec magic in '%s'"),
|
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elem);
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pos++;
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||||
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return pos;
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}
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|
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/*
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* Parse the pathspec element looking for short magic
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*
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||||
* saves all magic in 'magic'
|
||||
* returns the position in 'elem' after all magic has been parsed
|
||||
*/
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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);
|
||||
}
|
||||
|
||||
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);
|
||||
}
|
||||
|
||||
/*
|
||||
* Perform the initialization of a pathspec_item based on a pathspec element.
|
||||
*/
|
||||
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)))
|
||||
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) {
|
||||
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)
|
||||
{
|
||||
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))
|
||||
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))
|
||||
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)
|
||||
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;
|
||||
}
|
||||
|
||||
int match_pathspec_attrs(const struct index_state *istate,
|
||||
const char *name, int namelen,
|
||||
const struct pathspec_item *item)
|
||||
{
|
||||
int i;
|
||||
char *to_free = NULL;
|
||||
|
||||
if (name[namelen])
|
||||
name = to_free = xmemdupz(name, namelen);
|
||||
|
||||
git_check_attr(istate, name, item->attr_check);
|
||||
|
||||
free(to_free);
|
||||
|
||||
for (i = 0; i < item->attr_match_nr; i++) {
|
||||
const char *value;
|
||||
int matched;
|
||||
enum attr_match_mode match_mode;
|
||||
|
||||
value = item->attr_check->items[i].value;
|
||||
match_mode = item->attr_match[i].match_mode;
|
||||
|
||||
if (ATTR_TRUE(value))
|
||||
matched = (match_mode == MATCH_SET);
|
||||
else if (ATTR_FALSE(value))
|
||||
matched = (match_mode == MATCH_UNSET);
|
||||
else if (ATTR_UNSET(value))
|
||||
matched = (match_mode == MATCH_UNSPECIFIED);
|
||||
else
|
||||
matched = (match_mode == MATCH_VALUE &&
|
||||
!strcmp(item->attr_match[i].value, value));
|
||||
if (!matched)
|
||||
return 0;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue