1 files changed, 106 insertions, 0 deletions

diff --git a/git.h b/git.h
index a3f977c..922a167 100644
--- a/git.h
+++ b/git.h
@@ -130,2 +130,4 @@ static inline ssize_t xwrite(int fd, const void *buf, size_t len)
 
+extern const unsigned char null_sha1[20];
+
 extern int sha1_object_info(const unsigned char *, char *, unsigned long *);
@@ -138,2 +140,20 @@ extern char *sha1_to_hex(const unsigned char *sha1);	/* static buffer result! */
 
+static inline int is_null_sha1(const unsigned char *sha1)
+{
+        return !memcmp(sha1, null_sha1, 20);
+}
+static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
+{
+        return memcmp(sha1, sha2, 20);
+}
+static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
+{
+        memcpy(sha_dst, sha_src, 20);
+}
+static inline void hashclr(unsigned char *hash)
+{
+        memset(hash, 0, 20);
+}
+
+
 
@@ -259,2 +279,57 @@ typedef void* (*topo_sort_get_fn_t)(struct commit*);
 
+/*
+ * from git:diffcore.h
+ */
+
+struct diff_filespec {
+        unsigned char sha1[20];
+        char *path;
+        void *data;
+        void *cnt_data;
+        unsigned long size;
+                int xfrm_flags;          /* for use by the xfrm */
+                unsigned short mode; /* file mode */
+        unsigned sha1_valid : 1; /* if true, use sha1 and trust mode;
+                                  * if false, use the name and read from
+                                  * the filesystem.
+                                  */
+#define DIFF_FILE_VALID(spec) (((spec)->mode) != 0)
+        unsigned should_free : 1; /* data should be free()'ed */
+        unsigned should_munmap : 1; /* data should be munmap()'ed */
+};
+
+struct diff_filepair {
+        struct diff_filespec *one;
+        struct diff_filespec *two;
+        unsigned short int score;
+        char status; /* M C R N D U (see Documentation/diff-format.txt) */
+        unsigned source_stays : 1; /* all of R/C are copies */
+        unsigned broken_pair : 1;
+        unsigned renamed_pair : 1;
+};
+
+#define DIFF_PAIR_UNMERGED(p) \
+        (!DIFF_FILE_VALID((p)->one) && !DIFF_FILE_VALID((p)->two))
+
+#define DIFF_PAIR_RENAME(p) ((p)->renamed_pair)
+
+#define DIFF_PAIR_BROKEN(p) \
+        ( (!DIFF_FILE_VALID((p)->one) != !DIFF_FILE_VALID((p)->two)) && \
+          ((p)->broken_pair != 0) )
+
+#define DIFF_PAIR_TYPE_CHANGED(p) \
+        ((S_IFMT & (p)->one->mode) != (S_IFMT & (p)->two->mode))
+
+#define DIFF_PAIR_MODE_CHANGED(p) ((p)->one->mode != (p)->two->mode)
+
+extern void diff_free_filepair(struct diff_filepair *);
+
+extern int diff_unmodified_pair(struct diff_filepair *);
+
+struct diff_queue_struct {
+        struct diff_filepair **queue;
+        int alloc;
+        int nr;
+};
+
 
@@ -354,2 +429,28 @@ enum color_diff {
 
+extern int diff_tree_sha1(const unsigned char *old, const unsigned char *new,
+                          const char *base, struct diff_options *opt);
+
+extern int diff_root_tree_sha1(const unsigned char *new, const char *base,
+                               struct diff_options *opt);
+
+extern int git_diff_ui_config(const char *var, const char *value);
+extern void diff_setup(struct diff_options *);
+extern int diff_opt_parse(struct diff_options *, const char **, int);
+extern int diff_setup_done(struct diff_options *);
+
+
+extern void diffcore_std(struct diff_options *);
+extern void diff_flush(struct diff_options*);
+
+
+/* diff-raw status letters */
+        #define DIFF_STATUS_ADDED       'A'
+        #define DIFF_STATUS_COPIED      'C'
+        #define DIFF_STATUS_DELETED     'D'
+        #define DIFF_STATUS_MODIFIED    'M'
+        #define DIFF_STATUS_RENAMED     'R'
+        #define DIFF_STATUS_TYPE_CHANGED'T'
+        #define DIFF_STATUS_UNKNOWN     'X'
+        #define DIFF_STATUS_UNMERGED    'U'
+
 
@@ -460,2 +561,7 @@ extern struct commit *get_revision(struct rev_info *revs);
 
+/* from git:log-tree.h */
+
+int log_tree_commit(struct rev_info *, struct commit *);
+
+