trailer: process command line trailer arguments

diff --git a/ident.c b/ident.c
index 7d1c79c2f987837899fce65b0c022be67eb89c9b..77bc882e59c887e948a1fba4d99805f5dedfa7f7 100644 (file)
--- a/ident.c
+++ b/ident.c
@@ -102,7 +102,7 @@ static void copy_email(const struct passwd *pw, struct strbuf *email)
        add_domainname(email);
 }
 
-static const char *ident_default_name(void)
+const char *ident_default_name(void)
 {
        if (!git_default_name.len) {
                copy_gecos(xgetpwuid_self(), &git_default_name);
@@ -416,3 +416,32 @@ int git_ident_config(const char *var, const char *value, void *data)
 
        return 0;
 }
+
+static int buf_cmp(const char *a_begin, const char *a_end,
+                  const char *b_begin, const char *b_end)
+{
+       int a_len = a_end - a_begin;
+       int b_len = b_end - b_begin;
+       int min = a_len < b_len ? a_len : b_len;
+       int cmp;
+
+       cmp = memcmp(a_begin, b_begin, min);
+       if (cmp)
+               return cmp;
+
+       return a_len - b_len;
+}
+
+int ident_cmp(const struct ident_split *a,
+             const struct ident_split *b)
+{
+       int cmp;
+
+       cmp = buf_cmp(a->mail_begin, a->mail_end,
+                     b->mail_begin, b->mail_end);
+       if (cmp)
+               return cmp;
+
+       return buf_cmp(a->name_begin, a->name_end,
+                      b->name_begin, b->name_end);
+}