From 0b44a0315b47dd8eced9f3b7f31580cf14bbfc01 Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Sat, 12 Feb 2011 00:22:29 -0500
Subject: initial check-in, version 0.5.0

---
 src/multibyte/internal.h | 61 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 src/multibyte/internal.h

(limited to 'src/multibyte/internal.h')

diff --git a/src/multibyte/internal.h b/src/multibyte/internal.h
new file mode 100644
index 00000000..427519a2
--- /dev/null
+++ b/src/multibyte/internal.h
@@ -0,0 +1,61 @@
+/* 
+ * This code was written by Rich Felker in 2010; no copyright is claimed.
+ * This code is in the public domain. Attribution is appreciated but
+ * unnecessary.
+ */
+
+#define LIBC
+#ifndef LIBC
+/* rename functions not to conflict with libc */
+#ifndef myprefix
+#define myprefix fsmu8_
+#endif
+#define concat2(a,b) a ## b
+#define concat(a,b) concat2(a,b)
+#define prefix(b) concat(myprefix,b)
+
+#undef mblen
+#undef mbrlen
+#undef mbrtowc
+#undef mbsinit
+#undef mbsnrtowcs
+#undef mbsrtowcs
+#undef wcrtomb
+#undef wcsrtombs
+#undef wcstombs
+#undef wctomb
+#define mblen prefix(mblen)
+#define mbrlen prefix(mbrlen)
+#define mbrtowc prefix(mbrtowc)
+#define mbsinit prefix(mbsinit)
+#define mbsnrtowcs prefix(mbsnrtowcs)
+#define mbsrtowcs prefix(mbsrtowcs)
+#define mbstowcs prefix(mbstowcs)
+#define wcrtomb prefix(wcrtomb)
+#define wcsnrtombs prefix(wcsnrtombs)
+#define wcsrtombs prefix(wcsrtombs)
+#define wcstombs prefix(wcstombs)
+#define wctomb prefix(wctomb)
+
+#define bittab prefix(bittab)
+#else
+#define bittab __fsmu8
+#endif
+
+extern const uint32_t bittab[];
+
+/* Upper 6 state bits are a negative integer offset to bound-check next byte */
+/*    equivalent to: ( (b-0x80) | (b+offset) ) & ~0x3f      */
+#define OOB(c,b) (((((b)>>3)-0x10)|(((b)>>3)+((int32_t)(c)>>26))) & ~7)
+
+/* Interval [a,b). Either a must be 80 or b must be c0, lower 3 bits clear. */
+#define R(a,b) ((uint32_t)((a==0x80 ? 0x40-b : -a) << 23))
+#define FAILSTATE R(0x80,0x80)
+
+#ifdef I_FAILED_TO_RTFM_RFC3629
+#define SA 0xc2
+#define SB 0xfe
+#else
+#define SA 0xc2
+#define SB 0xf5
+#endif
-- 
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