From 17d018d54f9df84ef4a1b3624696bb231e590b93 Mon Sep 17 00:00:00 2001
From: giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8>
Date: Sat, 10 May 2008 18:58:29 +0000
Subject: handle empty input

git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@618 9d0c8265-081b-0410-96cb-a4ca84ce46f8
---
 generator/pbmtext.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/generator/pbmtext.c b/generator/pbmtext.c
index 251f051a..40423db9 100644
--- a/generator/pbmtext.c
+++ b/generator/pbmtext.c
@@ -823,7 +823,11 @@ main(int argc, char *argv[]) {
 
     computeImageWidth(formattedText, fontP, cmdline.space, hmargin,
                       &cols, &maxleftb);
-                        
+
+    if (cols == 0 || rows == 0)
+        pm_error("Input is all whitespace and/or non-renderable characters.  "
+                 "No output.");
+
     bits = pbm_allocarray(cols, rows);
 
     /* Fill background with white */
-- 
cgit 1.4.1