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changeset 7847:326c517550ce

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New modules 'unistr/u8-uctomb', 'unistr/u16-uctomb', 'unistr/u32-uctomb'.
author Bruno Haible <bruno@clisp.org>
date Tue, 09 Jan 2007 14:10:35 +0000
parents d488e5316819
children fbbf0edfe4a3
files lib/unistr/u16-uctomb.c lib/unistr/u32-uctomb.c lib/unistr/u8-uctomb.c modules/unistr/u16-uctomb modules/unistr/u32-uctomb modules/unistr/u8-uctomb
diffstat 6 files changed, 270 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
new file mode 100644
--- /dev/null
+++ b/lib/unistr/u16-uctomb.c
@@ -0,0 +1,69 @@
+/* Store a character in UTF-16 string.
+   Copyright (C) 2002, 2005-2006 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2002.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "unistr.h"
+
+#if !HAVE_INLINE
+
+int
+u16_uctomb (uint16_t *s, ucs4_t uc, int n)
+{
+  if (uc < 0xd800)
+    {
+      if (n > 0)
+	{
+	  s[0] = uc;
+	  return 1;
+	}
+      /* else return -2, below.  */
+    }
+  else if (uc < 0x10000)
+    {
+      if (uc >= 0xe000)
+	{
+	  if (n >= 1)
+	    {
+	      s[0] = uc;
+	      return 1;
+	    }
+	}
+      else
+	return -1;
+    }
+  else
+    {
+      if (uc < 0x110000)
+	{
+	  if (n >= 2)
+	    {
+	      s[0] = 0xd800 + ((uc - 0x10000) >> 10);
+	      s[1] = 0xdc00 + ((uc - 0x10000) & 0x3ff);
+	      return 2;
+	    }
+	}
+      else
+	return -1;
+    }
+  return -2;
+}
+
+#endif
new file mode 100644
--- /dev/null
+++ b/lib/unistr/u32-uctomb.c
@@ -0,0 +1,44 @@
+/* Store a character in UTF-32 string.
+   Copyright (C) 2002, 2005-2006 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2002.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "unistr.h"
+
+#if !HAVE_INLINE
+
+int
+u32_uctomb (uint32_t *s, ucs4_t uc, int n)
+{
+  if (uc < 0xd800 || (uc >= 0xe000 && uc < 0x110000))
+    {
+      if (n > 0)
+	{
+	  *s = uc;
+	  return 1;
+	}
+      else
+	return -2;
+    }
+  else
+    return -1;
+}
+
+#endif
new file mode 100644
--- /dev/null
+++ b/lib/unistr/u8-uctomb.c
@@ -0,0 +1,85 @@
+/* Store a character in UTF-8 string.
+   Copyright (C) 2002, 2005-2006 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2002.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "unistr.h"
+
+#if !HAVE_INLINE
+
+int
+u8_uctomb (uint8_t *s, ucs4_t uc, int n)
+{
+  if (uc < 0x80)
+    {
+      if (n > 0)
+	{
+	  s[0] = uc;
+	  return 1;
+	}
+      /* else return -2, below.  */
+    }
+  else
+    {
+      int count;
+
+      if (uc < 0x800)
+	count = 2;
+      else if (uc < 0x10000)
+	{
+	  if (uc < 0xd800 || uc >= 0xe000)
+	    count = 3;
+	  else
+	    return -1;
+	}
+#if 0
+      else if (uc < 0x200000)
+	count = 4;
+      else if (uc < 0x4000000)
+	count = 5;
+      else if (uc <= 0x7fffffff)
+	count = 6;
+#else
+      else if (uc < 0x110000)
+	count = 4;
+#endif
+      else
+	return -1;
+
+      if (n >= count)
+	{
+	  switch (count) /* note: code falls through cases! */
+	    {
+#if 0
+	    case 6: s[5] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x4000000;
+	    case 5: s[4] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x200000;
+#endif
+	    case 4: s[3] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x10000;
+	    case 3: s[2] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x800;
+	    case 2: s[1] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0xc0;
+	  /*case 1:*/ s[0] = uc;
+	    }
+	  return count;
+	}
+    }
+  return -2;
+}
+
+#endif
new file mode 100644
--- /dev/null
+++ b/modules/unistr/u16-uctomb
@@ -0,0 +1,24 @@
+Description:
+Store a character in UTF-16 string.
+
+Files:
+lib/unistr/u16-uctomb.c
+
+Depends-on:
+unistr/base
+
+configure.ac:
+gl_MODULE_INDICATOR([unistr/u16-uctomb])
+
+Makefile.am:
+lib_SOURCES += unistr/u16-uctomb.c
+
+Include:
+"unistr.h"
+
+License:
+LGPL
+
+Maintainer:
+Bruno Haible
+
new file mode 100644
--- /dev/null
+++ b/modules/unistr/u32-uctomb
@@ -0,0 +1,24 @@
+Description:
+Store a character in UTF-32 string.
+
+Files:
+lib/unistr/u32-uctomb.c
+
+Depends-on:
+unistr/base
+
+configure.ac:
+gl_MODULE_INDICATOR([unistr/u32-uctomb])
+
+Makefile.am:
+lib_SOURCES += unistr/u32-uctomb.c
+
+Include:
+"unistr.h"
+
+License:
+LGPL
+
+Maintainer:
+Bruno Haible
+
new file mode 100644
--- /dev/null
+++ b/modules/unistr/u8-uctomb
@@ -0,0 +1,24 @@
+Description:
+Store a character in UTF-8 string.
+
+Files:
+lib/unistr/u8-uctomb.c
+
+Depends-on:
+unistr/base
+
+configure.ac:
+gl_MODULE_INDICATOR([unistr/u8-uctomb])
+
+Makefile.am:
+lib_SOURCES += unistr/u8-uctomb.c
+
+Include:
+"unistr.h"
+
+License:
+LGPL
+
+Maintainer:
+Bruno Haible
+