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-rw-r--r--attr.c195
1 files changed, 152 insertions, 43 deletions
diff --git a/attr.c b/attr.c
index 17f6a4dca5..6aff6951d3 100644
--- a/attr.c
+++ b/attr.c
@@ -1,4 +1,6 @@
+#define NO_THE_INDEX_COMPATIBILITY_MACROS
#include "cache.h"
+#include "exec_cmd.h"
#include "attr.h"
const char git_attr__true[] = "(builtin)true";
@@ -9,6 +11,8 @@ static const char git_attr__unknown[] = "(builtin)unknown";
#define ATTR__UNSET NULL
#define ATTR__UNKNOWN git_attr__unknown
+static const char *attributes_file;
+
/*
* The basic design decision here is that we are not going to have
* insanely large number of attributes.
@@ -34,8 +38,7 @@ static struct git_attr *(git_attr_hash[HASHSIZE]);
static unsigned hash_name(const char *name, int namelen)
{
- unsigned val = 0;
- unsigned char c;
+ unsigned val = 0, c;
while (namelen--) {
c = *name++;
@@ -65,7 +68,7 @@ static int invalid_attr_name(const char *name, int namelen)
return 0;
}
-struct git_attr *git_attr(const char *name, int len)
+static struct git_attr *git_attr_internal(const char *name, int len)
{
unsigned hval = hash_name(name, len);
unsigned pos = hval % HASHSIZE;
@@ -95,6 +98,11 @@ struct git_attr *git_attr(const char *name, int len)
return a;
}
+struct git_attr *git_attr(const char *name)
+{
+ return git_attr_internal(name, strlen(name));
+}
+
/*
* .gitattributes file is one line per record, each of which is
*
@@ -162,7 +170,7 @@ static const char *parse_attr(const char *src, int lineno, const char *cp,
else {
e->setto = xmemdupz(equals + 1, ep - equals - 1);
}
- e->attr = git_attr(cp, len);
+ e->attr = git_attr_internal(cp, len);
}
(*num_attr)++;
return ep + strspn(ep, blank);
@@ -221,9 +229,9 @@ static struct match_attr *parse_attr_line(const char *line, const char *src,
sizeof(struct attr_state) * num_attr +
(is_macro ? 0 : namelen + 1));
if (is_macro)
- res->u.attr = git_attr(name, namelen);
+ res->u.attr = git_attr_internal(name, namelen);
else {
- res->u.pattern = (char*)&(res->state[num_attr]);
+ res->u.pattern = (char *)&(res->state[num_attr]);
memcpy(res->u.pattern, name, namelen);
res->u.pattern[namelen] = 0;
}
@@ -274,7 +282,7 @@ static void free_attr_elem(struct attr_stack *e)
setto == ATTR__UNKNOWN)
;
else
- free((char*) setto);
+ free((char *) setto);
}
free(a);
}
@@ -282,7 +290,7 @@ static void free_attr_elem(struct attr_stack *e)
}
static const char *builtin_attr[] = {
- "[attr]binary -diff -crlf",
+ "[attr]binary -diff -text",
NULL,
};
@@ -318,6 +326,9 @@ static struct attr_stack *read_attr_from_array(const char **list)
return res;
}
+static enum git_attr_direction direction;
+static struct index_state *use_index;
+
static struct attr_stack *read_attr_from_file(const char *path, int macro_ok)
{
FILE *fp = fopen(path, "r");
@@ -340,9 +351,10 @@ static void *read_index_data(const char *path)
unsigned long sz;
enum object_type type;
void *data;
+ struct index_state *istate = use_index ? use_index : &the_index;
len = strlen(path);
- pos = cache_name_pos(path, len);
+ pos = index_name_pos(istate, path, len);
if (pos < 0) {
/*
* We might be in the middle of a merge, in which
@@ -350,15 +362,15 @@ static void *read_index_data(const char *path)
*/
int i;
for (i = -pos - 1;
- (pos < 0 && i < active_nr &&
- !strcmp(active_cache[i]->name, path));
+ (pos < 0 && i < istate->cache_nr &&
+ !strcmp(istate->cache[i]->name, path));
i++)
- if (ce_stage(active_cache[i]) == 2)
+ if (ce_stage(istate->cache[i]) == 2)
pos = i;
}
if (pos < 0)
return NULL;
- data = read_sha1_file(active_cache[pos]->sha1, &type, &sz);
+ data = read_sha1_file(istate->cache[pos]->sha1, &type, &sz);
if (!data || type != OBJ_BLOB) {
free(data);
return NULL;
@@ -366,27 +378,17 @@ static void *read_index_data(const char *path)
return data;
}
-static struct attr_stack *read_attr(const char *path, int macro_ok)
+static struct attr_stack *read_attr_from_index(const char *path, int macro_ok)
{
struct attr_stack *res;
char *buf, *sp;
int lineno = 0;
- res = read_attr_from_file(path, macro_ok);
- if (res)
- return res;
-
- res = xcalloc(1, sizeof(*res));
-
- /*
- * There is no checked out .gitattributes file there, but
- * we might have it in the index. We allow operation in a
- * sparsely checked out work tree, so read from it.
- */
buf = read_index_data(path);
if (!buf)
- return res;
+ return NULL;
+ res = xcalloc(1, sizeof(*res));
for (sp = buf; *sp; ) {
char *ep;
int more;
@@ -401,6 +403,32 @@ static struct attr_stack *read_attr(const char *path, int macro_ok)
return res;
}
+static struct attr_stack *read_attr(const char *path, int macro_ok)
+{
+ struct attr_stack *res;
+
+ if (direction == GIT_ATTR_CHECKOUT) {
+ res = read_attr_from_index(path, macro_ok);
+ if (!res)
+ res = read_attr_from_file(path, macro_ok);
+ }
+ else if (direction == GIT_ATTR_CHECKIN) {
+ res = read_attr_from_file(path, macro_ok);
+ if (!res)
+ /*
+ * There is no checked out .gitattributes file there, but
+ * we might have it in the index. We allow operation in a
+ * sparsely checked out work tree, so read from it.
+ */
+ res = read_attr_from_index(path, macro_ok);
+ }
+ else
+ res = read_attr_from_index(path, macro_ok);
+ if (!res)
+ res = xcalloc(1, sizeof(*res));
+ return res;
+}
+
#if DEBUG_ATTR
static void debug_info(const char *what, struct attr_stack *elem)
{
@@ -428,6 +456,41 @@ static void debug_set(const char *what, const char *match, struct git_attr *attr
#define debug_set(a,b,c,d) do { ; } while (0)
#endif
+static void drop_attr_stack(void)
+{
+ while (attr_stack) {
+ struct attr_stack *elem = attr_stack;
+ attr_stack = elem->prev;
+ free_attr_elem(elem);
+ }
+}
+
+const char *git_etc_gitattributes(void)
+{
+ static const char *system_wide;
+ if (!system_wide)
+ system_wide = system_path(ETC_GITATTRIBUTES);
+ return system_wide;
+}
+
+int git_attr_system(void)
+{
+ return !git_env_bool("GIT_ATTR_NOSYSTEM", 0);
+}
+
+int git_attr_global(void)
+{
+ return !git_env_bool("GIT_ATTR_NOGLOBAL", 0);
+}
+
+static int git_attr_config(const char *var, const char *value, void *dummy)
+{
+ if (!strcmp(var, "core.attributesfile"))
+ return git_config_pathname(&attributes_file, var, value);
+
+ return 0;
+}
+
static void bootstrap_attr_stack(void)
{
if (!attr_stack) {
@@ -438,7 +501,26 @@ static void bootstrap_attr_stack(void)
elem->prev = attr_stack;
attr_stack = elem;
- if (!is_bare_repository()) {
+ if (git_attr_system()) {
+ elem = read_attr_from_file(git_etc_gitattributes(), 1);
+ if (elem) {
+ elem->origin = NULL;
+ elem->prev = attr_stack;
+ attr_stack = elem;
+ }
+ }
+
+ git_config(git_attr_config, NULL);
+ if (git_attr_global() && attributes_file) {
+ elem = read_attr_from_file(attributes_file, 1);
+ if (elem) {
+ elem->origin = NULL;
+ elem->prev = attr_stack;
+ attr_stack = elem;
+ }
+ }
+
+ if (!is_bare_repository() || direction == GIT_ATTR_INDEX) {
elem = read_attr(GITATTRIBUTES_FILE, 1);
elem->origin = strdup("");
elem->prev = attr_stack;
@@ -465,7 +547,9 @@ static void prepare_attr_stack(const char *path, int dirlen)
/*
* At the bottom of the attribute stack is the built-in
- * set of attribute definitions. Then, contents from
+ * set of attribute definitions, followed by the contents
+ * of $(prefix)/etc/gitattributes and a file specified by
+ * core.attributesfile. Then, contents from
* .gitattribute files from directories closer to the
* root to the ones in deeper directories are pushed
* to the stack. Finally, at the very top of the stack
@@ -505,7 +589,7 @@ static void prepare_attr_stack(const char *path, int dirlen)
/*
* Read from parent directories and push them down
*/
- if (!is_bare_repository()) {
+ if (!is_bare_repository() || direction == GIT_ATTR_INDEX) {
while (1) {
char *cp;
@@ -526,6 +610,8 @@ static void prepare_attr_stack(const char *path, int dirlen)
}
}
+ strbuf_release(&pathbuf);
+
/*
* Finally push the "info" one at the top of the stack.
*/
@@ -558,20 +644,25 @@ static int path_matches(const char *pathname, int pathlen,
return fnmatch(pattern, pathname + baselen, FNM_PATHNAME) == 0;
}
+static int macroexpand_one(int attr_nr, int rem);
+
static int fill_one(const char *what, struct match_attr *a, int rem)
{
struct git_attr_check *check = check_all_attr;
int i;
- for (i = 0; 0 < rem && i < a->num_attr; i++) {
+ for (i = a->num_attr - 1; 0 < rem && 0 <= i; i--) {
struct git_attr *attr = a->state[i].attr;
const char **n = &(check[attr->attr_nr].value);
const char *v = a->state[i].setto;
if (*n == ATTR__UNKNOWN) {
- debug_set(what, a->u.pattern, attr, v);
+ debug_set(what,
+ a->is_macro ? a->u.attr->name : a->u.pattern,
+ attr, v);
*n = v;
rem--;
+ rem = macroexpand_one(attr->attr_nr, rem);
}
}
return rem;
@@ -593,19 +684,27 @@ static int fill(const char *path, int pathlen, struct attr_stack *stk, int rem)
return rem;
}
-static int macroexpand(struct attr_stack *stk, int rem)
+static int macroexpand_one(int attr_nr, int rem)
{
+ struct attr_stack *stk;
+ struct match_attr *a = NULL;
int i;
- struct git_attr_check *check = check_all_attr;
- for (i = stk->num_matches - 1; 0 < rem && 0 <= i; i--) {
- struct match_attr *a = stk->attrs[i];
- if (!a->is_macro)
- continue;
- if (check[a->u.attr->attr_nr].value != ATTR__TRUE)
- continue;
+ if (check_all_attr[attr_nr].value != ATTR__TRUE)
+ return rem;
+
+ for (stk = attr_stack; !a && stk; stk = stk->prev)
+ for (i = stk->num_matches - 1; !a && 0 <= i; i--) {
+ struct match_attr *ma = stk->attrs[i];
+ if (!ma->is_macro)
+ continue;
+ if (ma->u.attr->attr_nr == attr_nr)
+ a = ma;
+ }
+
+ if (a)
rem = fill_one("expand", a, rem);
- }
+
return rem;
}
@@ -630,9 +729,6 @@ int git_checkattr(const char *path, int num, struct git_attr_check *check)
for (stk = attr_stack; 0 < rem && stk; stk = stk->prev)
rem = fill(path, pathlen, stk, rem);
- for (stk = attr_stack; 0 < rem && stk; stk = stk->prev)
- rem = macroexpand(stk, rem);
-
for (i = 0; i < num; i++) {
const char *value = check_all_attr[check[i].attr->attr_nr].value;
if (value == ATTR__UNKNOWN)
@@ -642,3 +738,16 @@ int git_checkattr(const char *path, int num, struct git_attr_check *check)
return 0;
}
+
+void git_attr_set_direction(enum git_attr_direction new, struct index_state *istate)
+{
+ enum git_attr_direction old = direction;
+
+ if (is_bare_repository() && new != GIT_ATTR_INDEX)
+ die("BUG: non-INDEX attr direction in a bare repo");
+
+ direction = new;
+ if (new != old)
+ drop_attr_stack();
+ use_index = istate;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-19 00:31:05 +0000