[PATCH 2/9] Make sure setup_git_directory is called before accessing repository

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Right now setup_git_env is called automatically when needed and
will not die out if $GIT_DIR is invalid. The next patch no longer
guarantee that, so make sure all commands have environment properly
setup before using.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
 fast-import.c |    1 +
 hash-object.c |   10 +++++-----
 index-pack.c  |    2 ++
 3 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/fast-import.c b/fast-import.c
index 0d3449f..7f197d5 100644
--- a/fast-import.c
+++ b/fast-import.c
@@ -2377,6 +2377,7 @@ int main(int argc, const char **argv)
 {
 	unsigned int i, show_stats = 1;
 
+	setup_git_directory();
 	git_config(git_pack_config);
 	if (!pack_compression_seen && core_compression_seen)
 		pack_compression_level = core_compression_level;
diff --git a/hash-object.c b/hash-object.c
index 61e7160..46d57ad 100644
--- a/hash-object.c
+++ b/hash-object.c
@@ -42,7 +42,10 @@ int main(int argc, char **argv)
 	int prefix_length = -1;
 	int no_more_flags = 0;
 	int hashstdin = 0;
+	int nongit = 0;
 
+	prefix = setup_git_directory_gently(&nongit);
+	prefix_length = prefix ? strlen(prefix) : 0;
 	git_config(git_default_config);
 
 	for (i = 1 ; i < argc; i++) {
@@ -53,11 +56,8 @@ int main(int argc, char **argv)
 				type = argv[i];
 			}
 			else if (!strcmp(argv[i], "-w")) {
-				if (prefix_length < 0) {
-					prefix = setup_git_directory();
-					prefix_length =
-						prefix ? strlen(prefix) : 0;
-				}
+				if (nongit)
+					die("Not a git repository");
 				write_object = 1;
 			}
 			else if (!strcmp(argv[i], "--")) {
diff --git a/index-pack.c b/index-pack.c
index 9fd6982..b4c2310 100644
--- a/index-pack.c
+++ b/index-pack.c
@@ -703,7 +703,9 @@ int main(int argc, char **argv)
 	char *index_name_buf = NULL, *keep_name_buf = NULL;
 	struct pack_idx_entry **idx_objects;
 	unsigned char sha1[20];
+	int nongit = 0;
 
+	setup_git_directory_gently(&nongit);
 	git_config(git_index_pack_config);
 
 	for (i = 1; i < argc; i++) {
-- 
1.5.4.2.281.g28d0e
-
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