From ba770b46f3f4d25622d98a46970100d2ca1cc224 Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Wed, 25 Jun 2008 21:50:08 +0200
Subject: [PATCH] Fixed a bug in str_unesc() and added a testsuite.

Prior to this fix, the first character after an octal escape
sequence was copied literally.
---
 lib/Makefile  |  3 ++-
 lib/str-esc.c | 25 ++++++++++++++++++++++++-
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/lib/Makefile b/lib/Makefile
index 6c90b319..82d3007d 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -97,7 +97,7 @@ $(o)/lib/ipaccess-test: $(o)/lib/ipaccess-test.o $(LIBUCW)
 
 TESTS+=$(addprefix $(o)/lib/,regex.test unicode.test hash-test.test mempool.test stkstring.test \
     slists.test kmp-test.test bbuf.test getopt.test fastbuf.test ff-unicode.test eltpool.test \
-    fb-socket.test)
+    fb-socket.test string.test)
 
 $(o)/lib/regex.test: $(o)/lib/regex-t
 $(o)/lib/unicode.test: $(o)/lib/unicode-t
@@ -113,6 +113,7 @@ $(o)/lib/fastbuf.test: $(o)/lib/fb-file-t $(o)/lib/fb-grow-t $(o)/lib/fb-pool-t
 $(o)/lib/ff-unicode.test: $(o)/lib/ff-unicode-t
 $(o)/lib/eltpool.test: $(o)/lib/eltpool-t
 $(o)/lib/fb-socket.test: $(o)/lib/fb-socket-t
+$(o)/lib/string.test: $(o)/lib/str-hex-t $(o)/lib/str-esc-t
 
 ifdef CONFIG_UCW_THREADS
 TESTS+=$(addprefix $(o)/lib/,asio.test)
diff --git a/lib/str-esc.c b/lib/str-esc.c
index d2944389..f9df3881 100644
--- a/lib/str-esc.c
+++ b/lib/str-esc.c
@@ -65,7 +65,8 @@ str_unesc(char *d, const char *s)
 		  else
 		    DBG("octal escape sequence out of range");
 	        }
-	      *d++ = *s++;
+	      else
+		*d++ = *s++;
 	      break;
 	  }
       else
@@ -74,3 +75,25 @@ str_unesc(char *d, const char *s)
   *d = 0;
   return d;
 }
+
+#ifdef TEST
+
+#include <stdio.h>
+#include <string.h>
+
+int main(int argc, char **argv)
+{
+  if (argc < 2)
+    return 1;
+
+  char tmp[strlen(argv[1]) + 1];
+  int len = str_unesc(tmp, argv[1]) - tmp;
+
+  char hex[2*len + 1];
+  mem_to_hex(hex, tmp, len, ' ');
+  puts(hex);
+
+  return 0;
+}
+
+#endif
-- 
2.39.2