From cf0f037ac861a3f4fd877e79f3e53877a446f722 Mon Sep 17 00:00:00 2001
From: Rob Landley <rob@landley.net>
Date: Fri, 22 Jan 2016 21:35:48 -0600
Subject: Factor out insanitize() from seq.c to next_printf() in lib.

---
 lib/lib.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'lib/lib.c')

diff --git a/lib/lib.c b/lib/lib.c
index b0ac4715..6559030c 100644
--- a/lib/lib.c
+++ b/lib/lib.c
@@ -1015,3 +1015,21 @@ char *show_uuid(char *uuid)
 
   return libbuf;
 }
+
+// Returns pointer to letter at end, 0 if none. *start = initial %
+char *next_printf(char *s, char **start)
+{
+  for (; *s; s++) {
+    if (*s != '%') continue;
+    if (*++s == '%') continue;
+    if (start) *start = s-1;
+    while (0 <= stridx("0'#-+ ", *s)) s++;
+    while (isdigit(*s)) s++;
+    if (*s == '.') s++;
+    while (isdigit(*s)) s++;
+
+    return s;
+  }
+
+  return 0;
+}
-- 
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