[PATCHv2 20/36] attr.c: pass struct git_attr_check down the callchain

[Stefan Beller <sbeller@google.com>]

From: Junio C Hamano <gitster@pobox.com>

The callchain that starts from git_check_attrs() down to
collect_some_attrs() used to take an array of git_attr_check_elem
as their parameters.  Pass the enclosing git_attr_check instance
instead, so that they will have access to new fields we will add to
the data structure.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
---
 attr.c | 36 ++++++++++++++++++++++++------------
 1 file changed, 24 insertions(+), 12 deletions(-)

diff --git a/attr.c b/attr.c
index 0a8ed5b582..47ab59c157 100644
--- a/attr.c
+++ b/attr.c
@@ -755,14 +755,25 @@ static int attr_check_is_dynamic(const struct git_attr_check *check)
  * check_all_attr. If num is non-zero, only attributes in check[] are
  * collected. Otherwise all attributes are collected.
  */
-static void collect_some_attrs(const char *path, int pathlen, int num,
-			       struct git_attr_check_elem *check)
+static void collect_some_attrs(const char *path, int pathlen,
+			       struct git_attr_check *check)
 
 {
 	struct attr_stack *stk;
 	int i, rem, dirlen;
 	const char *cp, *last_slash = NULL;
 	int basename_offset;
+	int num;
+	struct git_attr_check_elem *celem;
+
+	if (!check) {
+		/* Yuck - ugly git_all_attrs() hack! */
+		celem = NULL;
+		num = 0;
+	} else {
+		celem = check->check;
+		num = check->check_nr;
+	}
 
 	for (cp = path; cp < path + pathlen; cp++) {
 		if (*cp == '/' && cp[1])
@@ -782,9 +793,9 @@ static void collect_some_attrs(const char *path, int pathlen, int num,
 	if (num && !cannot_trust_maybe_real) {
 		rem = 0;
 		for (i = 0; i < num; i++) {
-			if (!check[i].attr->maybe_real) {
+			if (!celem[i].attr->maybe_real) {
 				struct git_attr_check_elem *c;
-				c = check_all_attr + check[i].attr->attr_nr;
+				c = check_all_attr + celem[i].attr->attr_nr;
 				c->value = ATTR__UNSET;
 				rem++;
 			}
@@ -798,18 +809,19 @@ static void collect_some_attrs(const char *path, int pathlen, int num,
 		rem = fill(path, pathlen, basename_offset, stk, rem);
 }
 
-static int git_check_attrs(const char *path, int pathlen, int num,
-			   struct git_attr_check_elem *check)
+static int git_check_attrs(const char *path, int pathlen,
+			   struct git_attr_check *check)
 {
 	int i;
+	struct git_attr_check_elem *celem = check->check;
 
-	collect_some_attrs(path, pathlen, num, check);
+	collect_some_attrs(path, pathlen, check);
 
-	for (i = 0; i < num; i++) {
-		const char *value = check_all_attr[check[i].attr->attr_nr].value;
+	for (i = 0; i < check->check_nr; i++) {
+		const char *value = check_all_attr[celem[i].attr->attr_nr].value;
 		if (value == ATTR__UNKNOWN)
 			value = ATTR__UNSET;
-		check[i].value = value;
+		celem[i].value = value;
 	}
 
 	return 0;
@@ -820,7 +832,7 @@ void git_all_attrs(const char *path, struct git_attr_check *check)
 	int i;
 
 	git_attr_check_clear(check);
-	collect_some_attrs(path, strlen(path), 0, NULL);
+	collect_some_attrs(path, strlen(path), NULL);
 
 	for (i = 0; i < attr_nr; i++) {
 		const char *name = check_all_attr[i].attr->name;
@@ -849,7 +861,7 @@ int git_check_attr_counted(const char *path, int pathlen,
 			   struct git_attr_check *check)
 {
 	check->finalized = 1;
-	return git_check_attrs(path, pathlen, check->check_nr, check->check);
+	return git_check_attrs(path, pathlen, check);
 }
 
 int git_check_attr(const char *path, struct git_attr_check *check)
-- 
2.10.1.714.ge3da0db