ObjFW  Check-in [928ee025eb]

Overview
Comment:More efficient Windows-1251 -> UTF-8 conversion
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SHA3-256: 928ee025eb9cedcfb18f30d292b9ba8678b14101b659c0b9fab0a842891daf53
User & Date: js on 2017-02-26 14:30:11
Other Links: manifest | tags
Context
2017-02-26
14:57
More efficient Windows-1252 -> UTF-8 conversion check-in: edb216ca88 user: js tags: trunk
14:30
More efficient Windows-1251 -> UTF-8 conversion check-in: 928ee025eb user: js tags: trunk
12:45
More efficient Mac Roman -> UTF-8 conversion check-in: 230644c87b user: js tags: trunk
Changes

Modified src/encodings/windows_1251.m from [157cfc4141] to [5235c111dd].

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 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include "config.h"

#import "OFString.h"



const of_char16_t of_windows_1251_table[] = {
	0x0402, 0x0403, 0x201A, 0x0453, 0x201E, 0x2026, 0x2020, 0x2021,
	0x20AC, 0x2030, 0x0409, 0x2039, 0x040A, 0x040C, 0x040B, 0x040F,
	0x0452, 0x2018, 0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014,
	0xFFFF, 0x2122, 0x0459, 0x203A, 0x045A, 0x045C, 0x045B, 0x045F,
	0x00A0, 0x040E, 0x045E, 0x0408, 0x00A4, 0x0490, 0x00A6, 0x00A7,







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 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include "config.h"

#import "OFString.h"

#import "common.h"

const of_char16_t of_windows_1251_table[] = {
	0x0402, 0x0403, 0x201A, 0x0453, 0x201E, 0x2026, 0x2020, 0x2021,
	0x20AC, 0x2030, 0x0409, 0x2039, 0x040A, 0x040C, 0x040B, 0x040F,
	0x0452, 0x2018, 0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014,
	0xFFFF, 0x2122, 0x0459, 0x203A, 0x045A, 0x045C, 0x045B, 0x045F,
	0x00A0, 0x040E, 0x045E, 0x0408, 0x00A4, 0x0490, 0x00A6, 0x00A7,
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	0x0438, 0x0439, 0x043A, 0x043B, 0x043C, 0x043D, 0x043E, 0x043F,
	0x0440, 0x0441, 0x0442, 0x0443, 0x0444, 0x0445, 0x0446, 0x0447,
	0x0448, 0x0449, 0x044A, 0x044B, 0x044C, 0x044D, 0x044E, 0x044F
};
const size_t of_windows_1251_table_offset =
    256 - (sizeof(of_windows_1251_table) / sizeof(*of_windows_1251_table));






























































bool
of_unicode_to_windows_1251(const of_unichar_t *input, unsigned char *output,
    size_t length, bool lossy)
{
	for (size_t i = 0; i < length; i++) {
		of_unichar_t c = input[i];

		if OF_UNLIKELY (c > 0x7F) {


			if OF_UNLIKELY (c > 0xFFFF) {
				if (lossy) {
					output[i] = '?';
					continue;
				} else
					return false;
			}

			if OF_LIKELY (c >= 0x410 && c <= 0x44F)
				output[i] = 0xC0 + (c - 0x410);
			else {
				switch ((of_char16_t)c) {
				case 0x402:
					output[i] = 0x80;
					break;
				case 0x403:
					output[i] = 0x81;
					break;


				case 0x201A:
					output[i] = 0x82;
					break;
				case 0x453:
					output[i] = 0x83;
					break;
				case 0x201E:
					output[i] = 0x84;
					break;
				case 0x2026:
					output[i] = 0x85;
					break;
				case 0x2020:
					output[i] = 0x86;
					break;
				case 0x2021:
					output[i] = 0x87;
					break;
				case 0x20AC:

					output[i] = 0x88;
					break;
				case 0x2030:
					output[i] = 0x89;
					break;
				case 0x409:
					output[i] = 0x8A;
					break;
				case 0x2039:
					output[i] = 0x8B;
					break;
				case 0x40A:
					output[i] = 0x8C;
					break;
				case 0x40C:
					output[i] = 0x8D;
					break;
				case 0x40B:
					output[i] = 0x8E;
					break;
				case 0x40F:
					output[i] = 0x8F;
					break;
				case 0x452:
					output[i] = 0x90;
					break;
				case 0x2018:
					output[i] = 0x91;
					break;
				case 0x2019:
					output[i] = 0x92;
					break;
				case 0x201C:
					output[i] = 0x93;
					break;
				case 0x201D:
					output[i] = 0x94;
					break;
				case 0x2022:
					output[i] = 0x95;
					break;
				case 0x2013:
					output[i] = 0x96;
					break;
				case 0x2014:
					output[i] = 0x97;
					break;
				case 0x2122:
					output[i] = 0x99;
					break;
				case 0x459:
					output[i] = 0x9A;
					break;
				case 0x203A:
					output[i] = 0x9B;
					break;
				case 0x45A:
					output[i] = 0x9C;
					break;
				case 0x45C:
					output[i] = 0x9D;
					break;
				case 0x45B:
					output[i] = 0x9E;
					break;
				case 0x45F:
					output[i] = 0x9F;
					break;
				case 0xA0:
					output[i] = 0xA0;
					break;
				case 0x40E:
					output[i] = 0xA1;
					break;
				case 0x45E:
					output[i] = 0xA2;
					break;
				case 0x408:
					output[i] = 0xA3;
					break;
				case 0xA4:
					output[i] = 0xA4;
					break;
				case 0x490:
					output[i] = 0xA5;
					break;
				case 0xA6:
					output[i] = 0xA6;
					break;
				case 0xA7:
					output[i] = 0xA7;
					break;
				case 0x401:
					output[i] = 0xA8;
					break;
				case 0xA9:
					output[i] = 0xA9;
					break;
				case 0x404:
					output[i] = 0xAA;
					break;
				case 0xAB:
					output[i] = 0xAB;
					break;
				case 0xAC:
					output[i] = 0xAC;
					break;
				case 0xAD:
					output[i] = 0xAD;
					break;
				case 0xAE:
					output[i] = 0xAE;
					break;
				case 0x407:
					output[i] = 0xAF;
					break;
				case 0xB0:
					output[i] = 0xB0;
					break;
				case 0xB1:
					output[i] = 0xB1;
					break;
				case 0x406:
					output[i] = 0xB2;
					break;
				case 0x456:
					output[i] = 0xB3;
					break;
				case 0x491:
					output[i] = 0xB4;
					break;
				case 0xB5:
					output[i] = 0xB5;
					break;
				case 0xB6:
					output[i] = 0xB6;
					break;
				case 0xB7:
					output[i] = 0xB7;
					break;
				case 0x451:
					output[i] = 0xB8;
					break;
				case 0x2116:
					output[i] = 0xB9;
					break;
				case 0x454:
					output[i] = 0xBA;
					break;
				case 0xBB:
					output[i] = 0xBB;
					break;
				case 0x458:
					output[i] = 0xBC;
					break;
				case 0x405:
					output[i] = 0xBD;
					break;
				case 0x455:
					output[i] = 0xBE;
					break;
				case 0x457:
					output[i] = 0xBF;
					break;
				default:
					if (lossy)
						output[i] = '?';
					else
						return false;

					break;
				}
			}
		} else
			output[i] = (unsigned char)c;
	}

	return true;
}







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	0x0438, 0x0439, 0x043A, 0x043B, 0x043C, 0x043D, 0x043E, 0x043F,
	0x0440, 0x0441, 0x0442, 0x0443, 0x0444, 0x0445, 0x0446, 0x0447,
	0x0448, 0x0449, 0x044A, 0x044B, 0x044C, 0x044D, 0x044E, 0x044F
};
const size_t of_windows_1251_table_offset =
    256 - (sizeof(of_windows_1251_table) / sizeof(*of_windows_1251_table));

static const unsigned char page0[] = {
	0xA0, 0x00, 0x00, 0x00, 0xA4, 0x00, 0xA6, 0xA7,
	0x00, 0xA9, 0x00, 0xAB, 0xAC, 0xAD, 0xAE, 0x00,
	0xB0, 0xB1, 0x00, 0x00, 0x00, 0xB5, 0xB6, 0xB7,
	0x00, 0x00, 0x00, 0xBB
};
static const uint8_t page0Start = 0xA0;

static const unsigned char page4[] = {
	0xA8, 0x80, 0x81, 0xAA, 0xBD, 0xB2, 0xAF, 0xA3,
	0x8A, 0x8C, 0x8E, 0x8D, 0x00, 0xA1, 0x8F, 0xC0,
	0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8,
	0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, 0xD0,
	0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8,
	0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF, 0xE0,
	0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8,
	0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF, 0xF0,
	0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8,
	0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF, 0x00,
	0xB8, 0x90, 0x83, 0xBA, 0xBE, 0xB3, 0xBF, 0xBC,
	0x9A, 0x9C, 0x9E, 0x9D, 0x00, 0xA2, 0x9F, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xA5,
	0xB4
};
static const uint8_t page4Start = 0x01;

static const unsigned char page20[] = {
	0x96, 0x97, 0x00, 0x00, 0x00, 0x91, 0x92, 0x82,
	0x00, 0x93, 0x94, 0x84, 0x00, 0x86, 0x87, 0x95,
	0x00, 0x00, 0x00, 0x85, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x89, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8B, 0x9B,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x88
};
static const uint8_t page20Start = 0x13;

static const unsigned char page21[] = {
	0xB9, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x99
};
static const uint8_t page21Start = 0x16;

bool
of_unicode_to_windows_1251(const of_unichar_t *input, unsigned char *output,
    size_t length, bool lossy)
{
	for (size_t i = 0; i < length; i++) {
		of_unichar_t c = input[i];

		if OF_UNLIKELY (c > 0x7F) {
			uint8_t index;

			if OF_UNLIKELY (c > 0xFFFF) {
				if (lossy) {
					output[i] = '?';
					continue;
				} else
					return false;
			}




			switch (c >> 8) {






			CASE_MISSING_IS_ERROR(0)
			CASE_MISSING_IS_ERROR(4)
			CASE_MISSING_IS_ERROR(20)














			CASE_MISSING_IS_ERROR(21)

			default:

				if (lossy) {
					output[i] = '?';
					continue;





































































































































































				} else
					return false;



			}
		} else
			output[i] = (unsigned char)c;
	}

	return true;
}