1 files changed, 107 insertions, 0 deletions
diff --git a/commit.h b/commit.h
new file mode 100644
index 0000000000..c9de1677e9
--- /dev/null
+++ b/commit.h
@@ -0,0 +1,107 @@
+#ifndef COMMIT_H
+#define COMMIT_H
+
+#include "object.h"
+#include "tree.h"
+
+struct commit_list {
+	struct commit *item;
+	struct commit_list *next;
+};
+
+struct commit {
+	struct object object;
+	unsigned long date;
+	struct commit_list *parents;
+	struct tree *tree;
+	char *buffer;
+};
+
+extern int save_commit_buffer;
+extern const char *commit_type;
+
+struct commit *lookup_commit(const unsigned char *sha1);
+struct commit *lookup_commit_reference(const unsigned char *sha1);
+struct commit *lookup_commit_reference_gently(const unsigned char *sha1,
+					      int quiet);
+
+int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size);
+
+int parse_commit(struct commit *item);
+
+struct commit_list * commit_list_insert(struct commit *item, struct commit_list **list_p);
+struct commit_list * insert_by_date(struct commit *item, struct commit_list **list);
+
+void free_commit_list(struct commit_list *list);
+
+void sort_by_date(struct commit_list **list);
+
+/* Commit formats */
+enum cmit_fmt {
+	CMIT_FMT_RAW,
+	CMIT_FMT_MEDIUM,
+	CMIT_FMT_DEFAULT = CMIT_FMT_MEDIUM,
+	CMIT_FMT_SHORT,
+	CMIT_FMT_FULL,
+	CMIT_FMT_FULLER,
+	CMIT_FMT_ONELINE,
+	CMIT_FMT_EMAIL,
+
+	CMIT_FMT_UNSPECIFIED,
+};
+
+extern enum cmit_fmt get_commit_format(const char *arg);
+extern unsigned long pretty_print_commit(enum cmit_fmt fmt, const struct commit *, unsigned long len, char *buf, unsigned long space, int abbrev, const char *subject, const char *after_subject);
+
+/** Removes the first commit from a list sorted by date, and adds all
+ * of its parents.
+ **/
+struct commit *pop_most_recent_commit(struct commit_list **list, 
+				      unsigned int mark);
+
+struct commit *pop_commit(struct commit_list **stack);
+
+void clear_commit_marks(struct commit *commit, unsigned int mark);
+
+int count_parents(struct commit * commit);
+
+/*
+ * Performs an in-place topological sort of list supplied.
+ *
+ * Pre-conditions for sort_in_topological_order:
+ *   all commits in input list and all parents of those
+ *   commits must have object.util == NULL
+ *
+ * Pre-conditions for sort_in_topological_order_fn:
+ *   all commits in input list and all parents of those
+ *   commits must have getter(commit) == NULL
+ *
+ * Post-conditions:
+ *   invariant of resulting list is:
+ *      a reachable from b => ord(b) < ord(a)
+ *   in addition, when lifo == 0, commits on parallel tracks are
+ *   sorted in the dates order.
+ */
+
+typedef void (*topo_sort_set_fn_t)(struct commit*, void *data);
+typedef void* (*topo_sort_get_fn_t)(struct commit*);
+
+void topo_sort_default_setter(struct commit *c, void *data);
+void *topo_sort_default_getter(struct commit *c);
+
+void sort_in_topological_order(struct commit_list ** list, int lifo);
+void sort_in_topological_order_fn(struct commit_list ** list, int lifo,
+				  topo_sort_set_fn_t setter,
+				  topo_sort_get_fn_t getter);
+
+struct commit_graft {
+	unsigned char sha1[20];
+	int nr_parent;
+	unsigned char parent[FLEX_ARRAY][20]; /* more */
+};
+
+struct commit_graft *read_graft_line(char *buf, int len);
+int register_commit_graft(struct commit_graft *, int);
+int read_graft_file(const char *graft_file);
+
+#endif /* COMMIT_H */