From acdf26c6bf1e4324be29152d4a2c7279b5f8657b Mon Sep 17 00:00:00 2001
From: Erik Auerswald <auerswal@unix-ag.uni-kl.de>
Date: Sun, 17 Nov 2024 19:25:33 +0100
Subject: [PATCH] print warning when ignoring unknown charset

---
 charset.c | 2 +-
 defines.h | 3 ++-
 ssocr.c   | 4 ++++
 3 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/charset.c b/charset.c
index 5e34066..44d15e2 100644
--- a/charset.c
+++ b/charset.c
@@ -44,7 +44,7 @@ charset_t parse_charset(char *keyword)
   } else if(strncasecmp(keyword, "tt_robot", 8) == 0) {
     return CS_TT_ROBOT;
   } else {
-    return DEFAULT_CHARSET;
+    return CS_PARSE_ERROR;
   }
 }
 
diff --git a/defines.h b/defines.h
index a1b21f4..cfbc295 100644
--- a/defines.h
+++ b/defines.h
@@ -202,7 +202,8 @@ typedef enum charset_e {
   CS_DIGITS,
   CS_DECIMAL,
   CS_HEXADECIMAL,
-  CS_TT_ROBOT
+  CS_TT_ROBOT,
+  CS_PARSE_ERROR
 } charset_t;
 
 #define DEFAULT_CHARSET CS_FULL
diff --git a/ssocr.c b/ssocr.c
index f2b4cbd..1affefe 100644
--- a/ssocr.c
+++ b/ssocr.c
@@ -558,6 +558,10 @@ int main(int argc, char **argv)
       case 'c':
         if(optarg) {
           charset = parse_charset(optarg);
+          if(charset == CS_PARSE_ERROR) {
+            fprintf(stderr, PROG ": warning: ignoring --charset=%s\n", optarg);
+            charset = DEFAULT_CHARSET;
+          }
         }
         break;
       case 'H':