test_cmp: do not use "diff -u" on platforms that lack one

diff --git a/refs.c b/refs.c
index 5a860c41eb53b22f43163a86ccee71b24edfc099..a7ad3fd8fa4f9f57776ba933f6976af661cb17e7 100644 (file)
--- a/refs.c
+++ b/refs.c
@@ -6,6 +6,7 @@
 
 /* ISSYMREF=01 and ISPACKED=02 are public interfaces */
 #define REF_KNOWS_PEELED 04
+#define REF_BROKEN 010
 
 struct ref_list {
        struct ref_list *next;
@@ -275,8 +276,10 @@ static struct ref_list *get_ref_dir(const char *base, struct ref_list *list)
                                list = get_ref_dir(ref, list);
                                continue;
                        }
-                       if (!resolve_ref(ref, sha1, 1, &flag))
+                       if (!resolve_ref(ref, sha1, 1, &flag)) {
                                hashclr(sha1);
+                               flag |= REF_BROKEN;
+                       }
                        list = add_ref(ref, sha1, flag, list, NULL);
                }
                free(ref);
@@ -311,7 +314,11 @@ static int warn_if_dangling_symref(const char *refname, const unsigned char *sha
 
 void warn_dangling_symref(FILE *fp, const char *msg_fmt, const char *refname)
 {
-       struct warn_if_dangling_data data = { fp, refname, msg_fmt };
+       struct warn_if_dangling_data data;
+
+       data.fp = fp;
+       data.refname = refname;
+       data.msg_fmt = msg_fmt;
        for_each_rawref(warn_if_dangling_symref, &data);
 }
 
@@ -539,10 +546,10 @@ static int do_one_ref(const char *base, each_ref_fn fn, int trim,
 {
        if (strncmp(base, entry->name, trim))
                return 0;
-       /* Is this a "negative ref" that represents a deleted ref? */
-       if (is_null_sha1(entry->sha1))
-               return 0;
+
        if (!(flags & DO_FOR_EACH_INCLUDE_BROKEN)) {
+               if (entry->flag & REF_BROKEN)
+                       return 0; /* ignore dangling symref */
                if (!has_sha1_file(entry->sha1)) {
                        error("%s does not point to a valid object!", entry->name);
                        return 0;
@@ -1273,6 +1280,7 @@ static int log_ref_write(const char *ref_name, const unsigned char *old_sha1,
        if (log_all_ref_updates &&
            (!prefixcmp(ref_name, "refs/heads/") ||
             !prefixcmp(ref_name, "refs/remotes/") ||
+            !prefixcmp(ref_name, "refs/notes/") ||
             !strcmp(ref_name, "HEAD"))) {
                if (safe_create_leading_directories(log_file) < 0)
                        return error("unable to create directory for %s",
@@ -1572,7 +1580,7 @@ int for_each_recent_reflog_ent(const char *ref, each_reflog_ent_fn fn, long ofs,
 {
        const char *logfile;
        FILE *logfp;
-       char buf[1024];
+       struct strbuf sb = STRBUF_INIT;
        int ret = 0;
 
        logfile = git_path("logs/%s", ref);
@@ -1585,24 +1593,24 @@ int for_each_recent_reflog_ent(const char *ref, each_reflog_ent_fn fn, long ofs,
                if (fstat(fileno(logfp), &statbuf) ||
                    statbuf.st_size < ofs ||
                    fseek(logfp, -ofs, SEEK_END) ||
-                   fgets(buf, sizeof(buf), logfp)) {
+                   strbuf_getwholeline(&sb, logfp, '\n')) {
                        fclose(logfp);
+                       strbuf_release(&sb);
                        return -1;
                }
        }
 
-       while (fgets(buf, sizeof(buf), logfp)) {
+       while (!strbuf_getwholeline(&sb, logfp, '\n')) {
                unsigned char osha1[20], nsha1[20];
                char *email_end, *message;
                unsigned long timestamp;
-               int len, tz;
+               int tz;
 
                /* 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] != ' ' ||
-                   !(email_end = strchr(buf + 82, '>')) ||
+               if (sb.len < 83 || sb.buf[sb.len - 1] != '\n' ||
+                   get_sha1_hex(sb.buf, osha1) || sb.buf[40] != ' ' ||
+                   get_sha1_hex(sb.buf + 41, nsha1) || sb.buf[81] != ' ' ||
+                   !(email_end = strchr(sb.buf + 82, '>')) ||
                    email_end[1] != ' ' ||
                    !(timestamp = strtoul(email_end + 2, &message, 10)) ||
                    !message || message[0] != ' ' ||
@@ -1616,11 +1624,13 @@ int for_each_recent_reflog_ent(const char *ref, each_reflog_ent_fn fn, long ofs,
                        message += 6;
                else
                        message += 7;
-               ret = fn(osha1, nsha1, buf+82, timestamp, tz, message, cb_data);
+               ret = fn(osha1, nsha1, sb.buf + 82, timestamp, tz, message,
+                        cb_data);
                if (ret)
                        break;
        }
        fclose(logfp);
+       strbuf_release(&sb);
        return ret;
 }