mirror of
https://github.com/AsahiLinux/u-boot
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f739fcd831
As part of the main conversion a few files were missed. These files had
additional whitespace after the '*' and before the SPDX tag and my
previous regex was too strict. This time I did a grep for all SPDX tags
and then filtered out anything that matched the correct styles.
Fixes: 83d290c56f ("SPDX: Convert all of our single license tags to Linux Kernel style")
Reported-by: Heinrich Schuchardt <xypron.debian@gmx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>
155 lines
3.1 KiB
C
155 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* charset conversion utils
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*
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* Copyright (c) 2017 Rob Clark
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*/
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#include <charset.h>
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#include <malloc.h>
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/*
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* utf8/utf16 conversion mostly lifted from grub
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*/
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size_t utf16_strlen(const uint16_t *in)
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{
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size_t i;
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for (i = 0; in[i]; i++);
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return i;
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}
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size_t utf16_strnlen(const uint16_t *in, size_t count)
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{
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size_t i;
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for (i = 0; count-- && in[i]; i++);
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return i;
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}
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uint16_t *utf16_strcpy(uint16_t *dest, const uint16_t *src)
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{
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uint16_t *tmp = dest;
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while ((*dest++ = *src++) != '\0')
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/* nothing */;
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return tmp;
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}
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uint16_t *utf16_strdup(const uint16_t *s)
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{
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uint16_t *new;
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if (!s || !(new = malloc((utf16_strlen(s) + 1) * 2)))
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return NULL;
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utf16_strcpy(new, s);
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return new;
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}
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/* Convert UTF-16 to UTF-8. */
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uint8_t *utf16_to_utf8(uint8_t *dest, const uint16_t *src, size_t size)
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{
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uint32_t code_high = 0;
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while (size--) {
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uint32_t code = *src++;
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if (code_high) {
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if (code >= 0xDC00 && code <= 0xDFFF) {
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/* Surrogate pair. */
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code = ((code_high - 0xD800) << 10) + (code - 0xDC00) + 0x10000;
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*dest++ = (code >> 18) | 0xF0;
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*dest++ = ((code >> 12) & 0x3F) | 0x80;
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*dest++ = ((code >> 6) & 0x3F) | 0x80;
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*dest++ = (code & 0x3F) | 0x80;
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} else {
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/* Error... */
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*dest++ = '?';
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/* *src may be valid. Don't eat it. */
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src--;
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}
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code_high = 0;
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} else {
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if (code <= 0x007F) {
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*dest++ = code;
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} else if (code <= 0x07FF) {
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*dest++ = (code >> 6) | 0xC0;
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*dest++ = (code & 0x3F) | 0x80;
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} else if (code >= 0xD800 && code <= 0xDBFF) {
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code_high = code;
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continue;
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} else if (code >= 0xDC00 && code <= 0xDFFF) {
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/* Error... */
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*dest++ = '?';
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} else if (code < 0x10000) {
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*dest++ = (code >> 12) | 0xE0;
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*dest++ = ((code >> 6) & 0x3F) | 0x80;
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*dest++ = (code & 0x3F) | 0x80;
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} else {
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*dest++ = (code >> 18) | 0xF0;
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*dest++ = ((code >> 12) & 0x3F) | 0x80;
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*dest++ = ((code >> 6) & 0x3F) | 0x80;
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*dest++ = (code & 0x3F) | 0x80;
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}
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}
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}
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return dest;
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}
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uint16_t *utf8_to_utf16(uint16_t *dest, const uint8_t *src, size_t size)
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{
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while (size--) {
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int extension_bytes;
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uint32_t code;
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extension_bytes = 0;
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if (*src <= 0x7f) {
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code = *src++;
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/* Exit on zero byte */
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if (!code)
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size = 0;
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} else if (*src <= 0xbf) {
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/* Illegal code */
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code = '?';
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} else if (*src <= 0xdf) {
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code = *src++ & 0x1f;
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extension_bytes = 1;
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} else if (*src <= 0xef) {
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code = *src++ & 0x0f;
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extension_bytes = 2;
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} else if (*src <= 0xf7) {
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code = *src++ & 0x07;
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extension_bytes = 3;
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} else {
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/* Illegal code */
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code = '?';
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}
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for (; extension_bytes && size; --size, --extension_bytes) {
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if ((*src & 0xc0) == 0x80) {
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code <<= 6;
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code |= *src++ & 0x3f;
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} else {
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/* Illegal code */
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code = '?';
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++src;
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--size;
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break;
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}
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}
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if (code < 0x10000) {
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*dest++ = code;
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} else {
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/*
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* Simplified expression for
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* (((code - 0x10000) >> 10) & 0x3ff) | 0xd800
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*/
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*dest++ = (code >> 10) + 0xd7c0;
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*dest++ = (code & 0x3ff) | 0xdc00;
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}
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}
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return dest;
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}
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