[mkupfer] 37676: - tool for autoconverting INF files to utf-16le from an arbitrary unicode encoding

Author: mkupfer
Date: Wed Nov 26 14:38:15 2008
New Revision: 37676

URL: http://svn.reactos.org/svn/reactos?rev=37676&view=rev
Log:
- tool for autoconverting INF files to utf-16le from an arbitrary unicode encoding

Added:
    trunk/reactos/tools/utf16le/
    trunk/reactos/tools/utf16le/utf16le.cpp   (with props)
    trunk/reactos/tools/utf16le/utf16le.rbuild   (with props)
Modified:
    trunk/reactos/tools/tools.rbuild

Modified: trunk/reactos/tools/tools.rbuild
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/tools/tools.rbuild?rev=3767...
==============================================================================
--- trunk/reactos/tools/tools.rbuild [iso-8859-1] (original)
+++ trunk/reactos/tools/tools.rbuild [iso-8859-1] Wed Nov 26 14:38:15 2008
@@ -31,4 +31,7 @@
 <directory name="wrc">
    <xi:include href="wrc/wrc.rbuild" />
 </directory>
+<directory name="utf16le">
+	<xi:include href="utf16le/utf16le.rbuild" />
+</directory>
 </group>

Added: trunk/reactos/tools/utf16le/utf16le.cpp
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/tools/utf16le/utf16le.cpp?r...
==============================================================================
--- trunk/reactos/tools/utf16le/utf16le.cpp (added)
+++ trunk/reactos/tools/utf16le/utf16le.cpp [iso-8859-1] Wed Nov 26 14:38:15 2008
@@ -1,0 +1,290 @@
+/*
+ * Usage: utf16le inputfile outputfile
+ *
+ * This is a tool and is compiled using the host compiler,
+ * i.e. on Linux gcc and not mingw-gcc (cross-compiler).
+ * It's a converter from utf-8, utf-16 (LE/BE) and utf-32 (LE/BE)
+ * to utf-16 LE and especially made for automatic conversions of
+ * INF-files from utf-8 to utf-16LE (so we can furthermore 
+ * store the INF files in utf-8 for subversion.
+ *
+ * Author: Matthias Kupfer ([e-mail])
+ */
+
+#include <fstream>
+#include <iostream>
+
+//#define DISPLAY_DETECTED_UNICODE
+
+using namespace std;
+
+class utf_converter
+{
+  public:
+	// detect can detect utf-8 and both utf-16 variants, but assume utf-32 only
+	// due to ambiguous BOM
+	enum enc_types { detect, utf8, utf16le, utf16be, utf32le, utf32be };
+	enum err_types { none, iopen, oopen, eof, read, write, decode };
+  protected:
+	err_types error;
+	enc_types encoding;
+	unsigned char buffer[4], fill, index; // need 4 char buffer for optional BOM handling
+	fstream inputfile,outputfile;
+	static const unsigned char utf8table[64];
+  public:
+	utf_converter(string ifname, string ofname, enc_types enc = detect) : error(none), encoding(enc), fill(0), index(0)
+	{
+		enc_types tmp_enc;
+		inputfile.open(ifname.c_str(), ios::in);
+		if (!inputfile)
+		{
+			error = iopen;
+			return;
+		}
+		outputfile.open(ofname.c_str(), ios::out);
+		if (!outputfile)
+		{
+			error = oopen;
+			return;
+		}
+		tmp_enc = getBOM();
+		if (enc != detect)
+		{
+			if (enc != tmp_enc)
+				cerr << "Warning: UTF-BOM doesn't match encoding setting, but given encoding forced" << endl;
+		}
+		else
+			encoding = tmp_enc;
+	}
+	err_types getError()
+	{
+		return error;
+	}
+	enc_types getBOM()
+	{
+		index = 0;
+		/* first byte can also detect with:
+		if ((buffer[0] & 0x11) || !buffer[0]))
+		valid values are 0xef, 0xff, 0xfe, 0x00
+		*/
+		inputfile.read(reinterpret_cast<char*>(&buffer),4);
+		fill =inputfile.gcount();
+		// stupid utf8 bom
+		if ((fill > 2) &&
+			(buffer[0] == 0xef) &&
+			(buffer[1] == 0xbb) &&
+			(buffer[2] == 0xbf))
+		{
+			index += 3;
+			fill -=3;
+#ifdef DISPLAY_DETECTED_UNICODE
+			cerr << "UTF-8 BOM found" << endl;
+#endif
+			return utf8;
+		}
+		if ((fill > 1) &&
+			(buffer[0] == 0xfe) &&
+			(buffer[1] == 0xff))
+		{
+			index += 2;
+			fill -= 2;
+#ifdef DISPLAY_DETECTED_UNICODE
+			cerr << "UTF-16BE BOM found" << endl;
+#endif
+			return utf16be;
+		}
+		if ((fill > 1) &&
+			(buffer[0] == 0xff) &&
+			(buffer[1] == 0xfe))
+		{
+			if ((fill == 4) &&
+				(buffer[2] == 0x00) &&
+				(buffer[3] == 0x00))
+			{	
+				cerr << "UTF Error: ambiguous BOM UTF-16 or UTF-32; assume UTF-32" << endl;
+				fill = 0;
+				index = 0;
+				return utf32le;
+			}
+			fill -= 2;
+			index += 2;
+#ifdef DISPLAY_DETECTED_UNICODE
+			cerr << "UTF-16LE BOM found" << endl;
+#endif
+			return utf16le;
+		}
+		if ((fill == 4) &&
+			(buffer[0] == 0x00) &&
+			(buffer[1] == 0x00) &&
+			(buffer[2] == 0xfe) &&
+			(buffer[3] == 0xff))
+		{
+			fill = 0;
+			index = 0;
+#ifdef DISPLAY_DETECTED_UNICODE
+			cerr << "UTF-32BE BOM found" << endl;
+#endif
+			return utf32be;
+		}
+		return utf8; // no valid bom so use utf8 as default
+	}
+	int getByte(unsigned char &c)
+	{
+		if (fill)
+		{
+			index %= 4;
+			--fill;
+			c = buffer[index++];
+			return 1;
+		} else
+		{
+			inputfile.read(reinterpret_cast<char*>(&c),1);
+			return inputfile.gcount();
+		}
+	}
+	int getWord(unsigned short &w)
+	{
+		unsigned char c[2];
+		if (!getByte(c[0]))
+				return 0;
+		if (!getByte(c[1]))
+				return 1;
+		if (encoding == utf16le)
+			w = c[0] | (c[1] << 8);
+		else
+			w = c[1] | (c[0] << 8);
+		return 2;
+	}
+	int getDWord(wchar_t &d)
+	{
+		unsigned char c[4];
+		for (int i=0;i<4;i++)
+			if (!getByte(c[i]))
+					return i;
+		if (encoding == utf32le)
+			d = c[0] | (c[1] << 8) | (c[2] << 16) | (c[3] << 24);
+		else
+			d = c[3] | (c[2] << 8) | (c[1] << 16) | (c[0] << 24);
+		return 4;
+	}
+	wchar_t get_wchar_t()
+	{
+		wchar_t ret = -1;
+		switch (encoding)
+		{
+			case detect: // if still unknwon
+				encoding = utf8; // assume utf8 as default
+			case utf8:
+				unsigned char c, tmp;
+				if (!getByte(tmp))
+					return ret;
+				// table for 64 bytes (all 11xxxxxx resp. >=192)
+				// resulting byte is determined:
+				// lower 3 bits: number of following bytes (max.8) 0=error
+				// upper 5 bits: data filled with 0
+				if (tmp & 0x80)
+				{
+					if (tmp & 0xc0 != 0xc0)
+					{
+						cerr << "UTF-8 Error: invalid data byte" << endl;
+						return ret;
+					}
+					unsigned char i = utf8table[tmp & 0x3f];
+					ret = i >> 3;
+					i &= 7;
+					while (i--)
+					{
+						ret <<= 6;
+						if (!getByte(c))
+							return wchar_t(-1);
+						ret |= c & 0x3f; 
+					}
+					return ret;
+				}
+				else
+					return wchar_t(tmp);
+			case utf16le:
+			case utf16be:
+				unsigned short w,w2;
+				if (getWord(w) != 2)
+					return ret;
+				if ((w & 0xfc00) == 0xd800) // high surrogate first
+				{
+					if (getWord(w2) != 2)
+						return ret;
+					if ((w2 & 0xfc00) != 0xdc00)
+					{
+						cerr << "UTF-16 Error: invalid low surrogate" << endl;
+						return ret;
+					}
+					return (((w & 0x3ff) + 0x40) << 10) | (w2 & 0x3ff);
+				}
+				return w;
+			case utf32le:
+			case utf32be:
+				if (getDWord(ret) != 4)
+					return wchar_t (-1);
+				return ret;
+		}
+		return ret;
+	}
+	void convert2utf16le()
+	{
+		wchar_t c;
+		unsigned char buffer[2] = {0xff, 0xfe};
+		outputfile.write(reinterpret_cast<char*>(&buffer),2); // write BOM
+		c = get_wchar_t();
+		while (!inputfile.eof())
+		{
+			buffer[0] = c & 0xff;
+			buffer[1] = (c >> 8) & 0xff; // create utf16-le char
+			outputfile.write(reinterpret_cast<char*>(&buffer),2); // write char
+			c = get_wchar_t();
+		}
+	}
+	~utf_converter()
+	{
+		if (inputfile)
+			inputfile.close();
+		if (outputfile)
+			outputfile.close();
+	}
+};
+
+const unsigned char utf_converter::utf8table[64] = {
+1, 9, 17, 25, 33, 41, 49, 57, 65, 73, 81, 89, 97, 105, 113, 121,
+129, 137, 145, 153, 161, 169, 177, 185, 193, 201, 209, 217, 225, 233, 241, 249,
+2, 10, 18, 26, 34, 42, 50, 58, 66, 74, 82, 90, 98, 106, 114, 122,
+3, 11, 19, 27, 35, 43, 51, 59, 4, 12, 20, 28, 5, 13, 6, 7 
+};
+
+
+int main(int argc, char* argv[])
+{
+	utf_converter::err_types err;
+	if (argc < 3)
+	{
+		cout << "usage: " << argv[0] << " inputfile outputfile" << endl;
+		return -1;
+	}
+	utf_converter conv(argv[1],argv[2]);
+	if ((err = conv.getError())!=utf_converter::none)
+	{
+		switch (err)
+		{
+			case utf_converter::iopen:
+				cerr << "Couldn't open input file." << endl;
+				break;
+			case utf_converter::oopen:
+				cerr << "Couldn't open output file." << endl;
+				break;
+			default:
+				cerr << "Unknown error." << endl;
+		}
+		return -1;
+	} else
+	conv.convert2utf16le();
+	return 0;
+}
+
+// vim:set ts=4 sw=4:

Propchange: trunk/reactos/tools/utf16le/utf16le.cpp
------------------------------------------------------------------------------
    svn:eol-style = native

Added: trunk/reactos/tools/utf16le/utf16le.rbuild
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/tools/utf16le/utf16le.rbuil...
==============================================================================
--- trunk/reactos/tools/utf16le/utf16le.rbuild (added)
+++ trunk/reactos/tools/utf16le/utf16le.rbuild [iso-8859-1] Wed Nov 26 14:38:15 2008
@@ -1,0 +1,5 @@
+<?xml version="1.0"?>
+<!DOCTYPE module SYSTEM "../../tools/rbuild/project.dtd">
+<module name="utf16le" type="buildtool">
+	<file>utf16le.cpp</file>
+</module>

Propchange: trunk/reactos/tools/utf16le/utf16le.rbuild
------------------------------------------------------------------------------
    svn:eol-style = native