[PATCH 1/2] add for_each_reflog_ent() iterator
Signed-off-by: Junio C Hamano <junkio@cox.net>
---
refs.c | 25 +++++++++++++++++++++++++
refs.h | 4 ++++
2 files changed, 29 insertions(+), 0 deletions(-)
diff --git a/refs.c b/refs.c
index d911b9e..db8fdd4 100644
--- a/refs.c
+++ b/refs.c
@@ -1093,3 +1093,28 @@ int read_ref_at(const char *ref, unsigned long at_time, int cnt, unsigned char *
logfile, show_rfc2822_date(date, tz));
return 0;
}
+
+void for_each_reflog_ent(const char *ref, each_reflog_ent_fn fn, void *cb_data)
+{
+ const char *logfile;
+ FILE *logfp;
+ char buf[1024];
+
+ logfile = git_path("logs/%s", ref);
+ logfp = fopen(logfile, "r");
+ if (!logfp)
+ return;
+ while (fgets(buf, sizeof(buf), logfp)) {
+ unsigned char osha1[20], nsha1[20];
+ int len;
+
+ /* old SP new SP name <email> SP time TAB msg LF */
+ len = strlen(buf);
+ if (len < 83 || buf[len-1] != '\n' ||
+ get_sha1_hex(buf, osha1) || buf[40] != ' ' ||
+ get_sha1_hex(buf + 41, nsha1) || buf[81] != ' ')
+ continue; /* corrupt? */
+ fn(osha1, nsha1, buf+82, cb_data);
+ }
+ fclose(logfp);
+}
diff --git a/refs.h b/refs.h
index 51aab1e..de43cc7 100644
--- a/refs.h
+++ b/refs.h
@@ -44,6 +44,10 @@ extern int write_ref_sha1(struct ref_lock *lock, const unsigned char *sha1, cons
/** Reads log for the value of ref during at_time. **/
extern int read_ref_at(const char *ref, unsigned long at_time, int cnt, unsigned char *sha1);
+/* iterate over reflog entries */
+typedef int each_reflog_ent_fn(unsigned char *osha1, unsigned char *nsha1, char *, void *);
+void for_each_reflog_ent(const char *ref, each_reflog_ent_fn fn, void *cb_data);
+
/** Returns 0 if target has the right format for a ref. **/
extern int check_ref_format(const char *target);
--
1.4.4.2.gc30f
Junio C Hamano <junkio@cox.net>