[PATCH] Use split_ident_line() in parse_user()

[cgit at cryptocrack.de (Lukas Fleischer)]

Use Git's built-in ident line splitting algorithm instead of
reimplementing it. This does not only simplify the code but also makes
sure that cgit is consistent with Git when it comes to author parsing.

Signed-off-by: Lukas Fleischer <cgit at cryptocrack.de>
---
I would also like to get rid of the angle brackets and only add them
when displaying the information as HTML. That would also result in email
filters getting email addresses without angle brackets which I consider
to be a good thing but it breaks backwards compatibility. Any opinions
on this are welcome.

 parsing.c | 45 +++++++++++++++++----------------------------
 1 file changed, 17 insertions(+), 28 deletions(-)

diff --git a/parsing.c b/parsing.c
index 3dbd122..7d34d11 100644
--- a/parsing.c
+++ b/parsing.c
@@ -71,36 +71,25 @@ static char *substr(const char *head, const char *tail)
 
 static const char *parse_user(const char *t, char **name, char **email, unsigned long *date)
 {
-	const char *p = t;
-	int mode = 1;
+	const char *line_end = strchrnul(t, '\n');
+	struct ident_split ident;
+	unsigned email_len;
 
-	while (p && *p) {
-		if (mode == 1 && *p == '<') {
-			*name = substr(t, p - 1);
-			t = p;
-			mode++;
-		} else if (mode == 1 && *p == '\n') {
-			*name = substr(t, p);
-			p++;
-			break;
-		} else if (mode == 2 && *p == '>') {
-			*email = substr(t, p + 1);
-			t = p;
-			mode++;
-		} else if (mode == 2 && *p == '\n') {
-			*email = substr(t, p);
-			p++;
-			break;
-		} else if (mode == 3 && isdigit(*p)) {
-			*date = atol(p);
-			mode++;
-		} else if (*p == '\n') {
-			p++;
-			break;
-		}
-		p++;
+	if (!split_ident_line(&ident, t, line_end - t)) {
+		*name = substr(ident.name_begin, ident.name_end);
+
+		email_len = ident.mail_end - ident.mail_begin;
+		*email = xmalloc(strlen("<") + email_len + strlen(">\0"));
+		sprintf(*email, "<%.*s>", email_len, ident.mail_begin);
+
+		if (ident.date_begin)
+			*date = strtoul(ident.date_begin, NULL, 10);
 	}
-	return p;
+
+	if (*line_end)
+		return line_end + 1;
+	else
+		return line_end;
 }
 
 #ifdef NO_ICONV
-- 
2.1.3