prepare_packed_git_one: refactor duplicate-pack check

diff --git a/git-compat-util.h b/git-compat-util.h
index 892032bc79b88c9180f9f4c8ba171407d7c784ed..47a49c355dd579fdb2d8b48d3d89ea9e9c058085 100644 (file)
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -339,7 +339,6 @@ extern void set_error_routine(void (*routine)(const char *err, va_list params));
 extern void set_die_is_recursing_routine(int (*routine)(void));
 
 extern int starts_with(const char *str, const char *prefix);
-extern int ends_with(const char *str, const char *suffix);
 
 static inline const char *skip_prefix(const char *str, const char *prefix)
 {
@@ -350,6 +349,39 @@ static inline const char *skip_prefix(const char *str, const char *prefix)
        return NULL;
 }
 
+/*
+ * If buf ends with suffix, return 1 and subtract the length of the suffix
+ * from *len. Otherwise, return 0 and leave *len untouched.
+ */
+static inline int strip_suffix_mem(const char *buf, size_t *len,
+                                  const char *suffix)
+{
+       size_t suflen = strlen(suffix);
+       if (*len < suflen || memcmp(buf + (*len - suflen), suffix, suflen))
+               return 0;
+       *len -= suflen;
+       return 1;
+}
+
+/*
+ * If str ends with suffix, return 1 and set *len to the size of the string
+ * without the suffix. Otherwise, return 0 and set *len to the size of the
+ * string.
+ *
+ * Note that we do _not_ NUL-terminate str to the new length.
+ */
+static inline int strip_suffix(const char *str, const char *suffix, size_t *len)
+{
+       *len = strlen(str);
+       return strip_suffix_mem(str, len, suffix);
+}
+
+static inline int ends_with(const char *str, const char *suffix)
+{
+       size_t len;
+       return strip_suffix(str, suffix, &len);
+}
+
 #if defined(NO_MMAP) || defined(USE_WIN32_MMAP)
 
 #ifndef PROT_READ
@@ -531,12 +563,13 @@ extern void *xcalloc(size_t nmemb, size_t size);
 extern void *xmmap(void *start, size_t length, int prot, int flags, int fd, off_t offset);
 extern ssize_t xread(int fd, void *buf, size_t len);
 extern ssize_t xwrite(int fd, const void *buf, size_t len);
+extern ssize_t xpread(int fd, void *buf, size_t len, off_t offset);
 extern int xdup(int fd);
 extern FILE *xfdopen(int fd, const char *mode);
 extern int xmkstemp(char *template);
 extern int xmkstemp_mode(char *template, int mode);
 extern int odb_mkstemp(char *template, size_t limit, const char *pattern);
-extern int odb_pack_keep(char *name, size_t namesz, unsigned char *sha1);
+extern int odb_pack_keep(char *name, size_t namesz, const unsigned char *sha1);
 
 static inline size_t xsize_t(off_t len)
 {
@@ -545,13 +578,6 @@ static inline size_t xsize_t(off_t len)
        return (size_t)len;
 }
 
-static inline int has_extension(const char *filename, const char *ext)
-{
-       size_t len = strlen(filename);
-       size_t extlen = strlen(ext);
-       return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
-}
-
 /* in ctype.c, for kwset users */
 extern const char tolower_trans_tbl[256];
 
@@ -716,4 +742,11 @@ void warn_on_inaccessible(const char *path);
 /* Get the passwd entry for the UID of the current process. */
 struct passwd *xgetpwuid_self(void);
 
+#ifdef GMTIME_UNRELIABLE_ERRORS
+struct tm *git_gmtime(const time_t *);
+struct tm *git_gmtime_r(const time_t *, struct tm *);
+#define gmtime git_gmtime
+#define gmtime_r git_gmtime_r
+#endif
+
 #endif