From 55eb58fde19e69d37627e002cdca52bc6b58e03a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Henrik=20Grubbstr=C3=B6m=20=28Grubba=29?=
<grubba@grubba.org>
Date: Mon, 22 Feb 1999 22:35:28 +0100
Subject: [PATCH] Added idea for a heuristic for 8bit => wide string conversion
in cpp().
Rev: src/cpp.c:1.37
---
src/cpp.c | 25 +++++++++++++++++++++++--
1 file changed, 23 insertions(+), 2 deletions(-)
diff --git a/src/cpp.c b/src/cpp.c
index 1d44e40bfb..5718c210d7 100644
--- a/src/cpp.c
+++ b/src/cpp.c
@@ -5,10 +5,9 @@
\*/
/*
- * $Id: cpp.c,v 1.36 1999/02/22 15:22:24 grubba Exp $
+ * $Id: cpp.c,v 1.37 1999/02/22 21:35:28 grubba Exp $
*/
#include "global.h"
-/* #include "dynamic_buffer.h" */
#include "language.h"
#include "lex.h"
#include "stralloc.h"
@@ -2100,6 +2099,28 @@ void f_cpp(INT32 args)
}else{
this.current_file=make_shared_string("-");
}
+
+ if ((!sp[-args].u.string->size_shift) && (sp[-args].u.string->len > 1)) {
+ /* Try to determine if we need to recode the string */
+
+ /* At least a prefix of two bytes need to be 7bit in a valid
+ * Pike program.
+ */
+ /* Heuristic:
+ *
+ * Index 0 | Index 1 | Interpretation
+ * --------+---------+------------------------------------------
+ * 0 | 0 | 32bit wide string.
+ * 0 | >0 | 16bit Unicode string.
+ * >0 | 0 | 16bit Unicode string reverse byte order.
+ * 0xff | 0xfe | 16bit Unicode string.
+ * 0xfe | 0xff | 16bit Unicode string reverse byte order.
+ * 0x7b | 0x83 | EBCDIC-US ("#c").
+ * 0x7b | 0x40 | EBCDIC-US ("# ").
+ * --------+---------+------------------------------------------
+ * Other | Other | 8bit standard string.
+ */
+ }
init_string_builder(&this.buf, 0);
this.current_line=1;
--
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