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[PATCH 2/5] don't die immediately when convert an invalid type name

From
LYLiu Yubao <yubao.liu@gmail.com>
Date
Dec 2, 2008, 01:53 UTC
Message-ID
<493494FF.5030001@gmail.com>
In-Reply-To
<7voczws3np.fsf@gitster.siamese.dyndns.org>
Signed-off-by: Liu Yubao <yubao.liu@gmail.com>
---
 object.c    |   14 +++++++++++++-
 object.h    |    1 +
 sha1_file.c |    2 +-
 3 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/object.c b/object.c
index 50b6528..0a18db6 100644
--- a/object.c
+++ b/object.c
@@ -33,13 +33,25 @@ const char *typename(unsigned int type)
 	return object_type_strings[type];
 }
 
-int type_from_string(const char *str)
+int type_from_string_gently(const char *str)
 {
 	int i;
 
 	for (i = 1; i < ARRAY_SIZE(object_type_strings); i++)
 		if (!strcmp(str, object_type_strings[i]))
 			return i;
+
+	return -1;
+}
+
+int type_from_string(const char *str)
+{
+	int i;
+
+	i = type_from_string_gently(str);
+	if (i > 0)
+		return i;
+
 	die("invalid object type \"%s\"", str);
 }
 
diff --git a/object.h b/object.h
index d962ff1..88baf2b 100644
--- a/object.h
+++ b/object.h
@@ -36,6 +36,7 @@ struct object {
 };
 
 extern const char *typename(unsigned int type);
+extern int type_from_string_gently(const char *str);
 extern int type_from_string(const char *str);
 
 extern unsigned int get_max_object_index(void);
diff --git a/sha1_file.c b/sha1_file.c
index efe6967..dccc455 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -1291,7 +1291,7 @@ static int parse_sha1_header(const char *hdr, unsigned long length, unsigned lon
 	/*
 	 * The length must be followed by a zero byte
 	 */
-	return *hdr ? -1 : type_from_string(type);
+	return *hdr ? -1 : type_from_string_gently(type);
 }
 
 static void *unpack_sha1_file(void *map, unsigned long mapsize, enum object_type *type, unsigned long *size, const unsigned char *sha1)
-- 
1.6.1.rc1.5.gde86c
Previous: Liu YubaoNext: Liu Yubao
Message 12 of 27 in “two questions about the format of loose object”
  1. Liu YubaoDec 1, 2008
  2. Junio C HamanoDec 1, 2008
  3. Liu YubaoDec 1, 2008
  4. Jakub NarebskiDec 1, 2008
  5. Liu YubaoDec 2, 2008
  6. Shawn O. PearceDec 1, 2008
  7. Liu YubaoDec 2, 2008
  8. 0/5 support reading and writing uncompressed loose objectLiu Yubao, Dec 2, 2008
  9. 1/5 avoid parse_sha1_header() accessing memory out of boundLiu Yubao, Dec 2, 2008
  10. Shawn O. PearceDec 2, 2008
  11. Liu YubaoDec 3, 2008
  12. 2/5 don't die immediately when convert an invalid type nameLiu Yubao, Dec 2, 2008
  13. 3/5 optimize parse_sha1_header() a little by detecting object typeLiu Yubao, Dec 2, 2008
  14. Shawn O. PearceDec 2, 2008
  15. Liu YubaoDec 3, 2008
  16. 4/5 support reading uncompressed loose objectLiu Yubao, Dec 2, 2008
  17. Shawn O. PearceDec 2, 2008
  18. Liu YubaoDec 3, 2008
  19. 5/5 support writing uncompressed loose objectLiu Yubao, Dec 2, 2008
  20. Shawn O. PearceDec 2, 2008
  21. Liu YubaoDec 3, 2008
  22. Liu YubaoDec 2, 2008
  23. Nick AndrewDec 1, 2008
  24. Liu YubaoDec 2, 2008
  25. Shawn O. PearceDec 1, 2008
  26. Liu YubaoDec 2, 2008
  27. Nicolas PitreDec 4, 2008

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