Merge branch 'usermode_syscalls'

Conflicts:
	Source/Kernel/Makefile

1 files changed, 155 insertions, 0 deletions

diff --git a/Source/Library/Common/WChar.class.cpp b/Source/Library/Common/WChar.class.cpp
new file mode 100644
index 0000000..5485bb8
--- /dev/null
+++ b/Source/Library/Common/WChar.class.cpp
@@ -0,0 +1,155 @@
+#include "WChar.class.h"
+
+#ifdef THIS_IS_MELON_KERNEL
+using namespace CMem;
+#endif
+
+#ifdef THIS_IS_MELON_USERLAND
+using namespace CMem;
+#endif
+
+WChar WChar::CP437[] = {	//These are the UTF8 equivalents for the 128 extra characters of code page 437
+	"Ç", "ü", "é", "â", "ä", "à", "å", "ç", "ê", "ë", "è", "ï", "î", "ì", "Ä", "Å",
+	"É", "æ", "Æ", "ô", "ö", "ò", "û", "ù", "ÿ", "Ö", "Ü", "¢", "£", "¥", "₧", "ƒ",
+	"á", "í", "ó", "ú", "ñ", "Ñ", "ª", "º", "¿", "⌐", "¬", "½", "¼", "¡", "«", "»",
+	"░", "▒", "▓", "│", "┤", "╡", "╢", "╖", "╕", "╣", "║", "╗", "╝", "╜", "╛", "┐",
+	"└", "┴", "┬", "├", "─", "┼", "╞", "╟", "╚", "╔", "╩", "╦", "╠", "═", "╬", "¤",
+	"╨", "╤", "╥", "╙", "╘", "╒", "╓", "╫", "╪", "┘", "┌", "█", "▄", "▌", "▐", "▀",
+	"α", "ß", "Γ", "π", "Σ", "σ", "µ", "τ", "Φ", "Θ", "Ω", "δ", "∞", "φ", "ε", "∩",
+	"≡", "±", "≥", "≤", "⌠", "⌡", "÷", "≈", "°", "∙", "·", "√", "ⁿ", "²", "■", "⍽"
+};
+
+WChar::WChar() {
+	value = 0;
+}
+
+WChar::WChar(char c) {
+	affectAscii(c);
+}
+
+WChar::WChar(const char* c, u8int encoding) {
+	if (encoding == UE_UTF8) 	affectUtf8(c);
+	if (encoding == UE_UTF16)	affectUtf16(c);
+	if (encoding == UE_UTF32)	affectUtf32(c);
+}
+
+u32int WChar::ucharLen(const char* c, u8int encoding) {
+	if (encoding == UE_UTF8) {
+		if ((c[0] & 0x80) == 0) return 1;
+		else if ((c[0] & 0xE0) == 0xC0) return 2;
+		else if ((c[0] & 0xF0) == 0xE0) return 3;
+		else if ((c[0] & 0xF8) == 0xF0) return 4;
+		else return 1;
+	} else if (encoding == UE_UTF16) {
+		if ((c[0] & 0xFC) == 0xD8 and (c[2] & 0xFC) == 0xDC) return 4;
+		else return 2;
+	} else if (encoding == UE_UTF32) {
+		return 4;
+	}
+	return 1;
+}
+
+u32int WChar::utfLen(const char* c, u8int encoding) {
+	int i = 0, l = strlen(c), co = 0;
+	while (i < l) {
+		i += ucharLen(c + i, encoding);
+		co++;
+	}
+	return co;
+}
+
+void WChar::affectAscii(char c) {
+	if (c >= 0)	value = c;
+	else value = CP437[c + 128];
+}
+
+u32int WChar::affectUtf8(const char* c) {	//Returns the number of bytes for the character
+	if ((c[0] & 0x80) == 0) {
+		value = c[0];		//0x80 = 10000000b
+		return 1;
+	}
+	if ((c[0] & 0xE0) == 0xC0) {				// 11100000b, 11000000b
+		value = ((c[0] & 0x1F) << 6) | (c[1] & 0x3F);
+		if (value < 128) value = 0;	//Bad value
+		return 2;
+	}
+	if ((c[0] & 0xF0) == 0xE0) {	// 11110000b, 11100000b
+		value = ((c[0] & 0x0F) << 12) | ((c[1] & 0x3F) << 6) | (c[2] & 0x3F);
+		if (value < 2048) value = 0; //Bad value	
+		if (value >= 0xD800 and value <= 0xDFFF) value = 0;	//These values are unallowed
+		if (value >= 0xFFFE and value <= 0xFFFF) value = 0;	
+		return 3;
+	}
+	if ((c[0] & 0xF8) == 0xF0) {	// 11111000b, 11110000b
+		value = ((c[0] & 0x0E) << 18) | ((c[1] & 0x3F) << 12) | ((c[2] & 0x3F) << 6) | (c[3] & 0x3F);
+		if (value < 65536) value = 0; //Bad value
+		return 4;
+	}
+	value = 0;	//Something wrong happenned
+	return 1;
+}
+
+u32int WChar::affectUtf16(const char* c) {
+	if ((c[0] & 0xFC) == 0xD8 and		// 11111100b, 11011000b
+		(c[2] & 0xFC) == 0xDC) {		// 11111100b, 11011100b
+		u32int w = ((c[0] & 0x03) << 2) | ((c[1] & 0xC0) >> 6);
+		u32int x = (c[1] & 0x3F);
+		u32int y = ((c[2] & 0x03) << 8) | (c[2]);
+		value = ((w + 1) << 16) | (x << 10) | y;
+		if (value >= 0xD800 and value <= 0xDFFF) value = 0;	//These values are unallowed
+		if (value >= 0xFFFE and value <= 0xFFFF) value = 0;	
+		return 4;
+	} else {
+		value = (c[0] << 8) | (c[1]);
+		if (value >= 0xD800 and value <= 0xDFFF) value = 0;	//These values are unallowed
+		if (value >= 0xFFFE and value <= 0xFFFF) value = 0;	
+		return 2;
+	}
+}
+
+u32int WChar::affectUtf32(const char* c) {
+	value = (c[0] << 24) | (c[1] << 16) | (c[2] << 8) | c[3];
+	if (value >= 0xD800 and value <= 0xDFFF) value = 0;	//These values are unallowed
+	if (value >= 0xFFFE and value <= 0xFFFF) value = 0;	
+	return 4;
+}
+
+u8int WChar::toAscii() {
+	if (value < 128) return (char)value;
+	for (int i = 0; i < 128; i++) {
+		if (CP437[i] == value) return (i + 128);
+	}
+	return '?';
+}
+
+uchar_repr_t WChar::toUtf8() {
+	uchar_repr_t r;
+	r.i = 0;
+	if (value < 128) {
+		r.c[0] = value;
+	} else if (value < 4096) {
+		r.c[0] = 0xC0 | ((value & 0x07C0) >> 6);
+		r.c[1] = 0x80 | (value & 0x3F);
+	} else if (value < 65536) {
+		r.c[0] = 0xE0 | ((value & 0xF000) >> 12);
+		r.c[1] = 0x80 | ((value & 0x0FC0) >> 6);
+		r.c[2] = 0x80 | (value & 0x003F);
+	} else {
+		r.c[0] = 0xF0 | ((value & 0x1C0000) >> 18);
+		r.c[1] = 0x80 | ((value & 0x3F000) >> 12);
+		r.c[2] = 0x80 | ((value & 0x0FC0) >> 6);
+		r.c[3] = 0x80 | (value & 0x003F);
+	}
+	return r;
+}
+
+//TODO : code WChar::toUtf16
+
+uchar_repr_t WChar::toUtf32() {
+	uchar_repr_t r;
+	r.c[0] = (value >> 24) & 0xFF;
+	r.c[1] = (value >> 16) & 0xFF;
+	r.c[2] = (value >> 8) & 0xFF;
+	r.c[3] = value & 0xFF;
+	return r;
+}