mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 00:47:26 +00:00
967407defe
Use u16_strsize() instead of duplicating it. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
534 lines
9.1 KiB
C
534 lines
9.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* charset conversion utils
|
|
*
|
|
* Copyright (c) 2017 Rob Clark
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <charset.h>
|
|
#include <capitalization.h>
|
|
#include <cp437.h>
|
|
#include <efi_loader.h>
|
|
#include <errno.h>
|
|
#include <malloc.h>
|
|
|
|
/**
|
|
* codepage_437 - Unicode to codepage 437 translation table
|
|
*/
|
|
const u16 codepage_437[128] = CP437;
|
|
|
|
static struct capitalization_table capitalization_table[] =
|
|
#ifdef CONFIG_EFI_UNICODE_CAPITALIZATION
|
|
UNICODE_CAPITALIZATION_TABLE;
|
|
#elif CONFIG_FAT_DEFAULT_CODEPAGE == 1250
|
|
CP1250_CAPITALIZATION_TABLE;
|
|
#else
|
|
CP437_CAPITALIZATION_TABLE;
|
|
#endif
|
|
|
|
/**
|
|
* get_code() - read Unicode code point from UTF-8 stream
|
|
*
|
|
* @read_u8: - stream reader
|
|
* @src: - string buffer passed to stream reader, optional
|
|
* Return: - Unicode code point, or -1
|
|
*/
|
|
static int get_code(u8 (*read_u8)(void *data), void *data)
|
|
{
|
|
s32 ch = 0;
|
|
|
|
ch = read_u8(data);
|
|
if (!ch)
|
|
return 0;
|
|
if (ch >= 0xc2 && ch <= 0xf4) {
|
|
int code = 0;
|
|
|
|
if (ch >= 0xe0) {
|
|
if (ch >= 0xf0) {
|
|
/* 0xf0 - 0xf4 */
|
|
ch &= 0x07;
|
|
code = ch << 18;
|
|
ch = read_u8(data);
|
|
if (ch < 0x80 || ch > 0xbf)
|
|
goto error;
|
|
ch &= 0x3f;
|
|
} else {
|
|
/* 0xe0 - 0xef */
|
|
ch &= 0x0f;
|
|
}
|
|
code += ch << 12;
|
|
if ((code >= 0xD800 && code <= 0xDFFF) ||
|
|
code >= 0x110000)
|
|
goto error;
|
|
ch = read_u8(data);
|
|
if (ch < 0x80 || ch > 0xbf)
|
|
goto error;
|
|
}
|
|
/* 0xc0 - 0xdf or continuation byte (0x80 - 0xbf) */
|
|
ch &= 0x3f;
|
|
code += ch << 6;
|
|
ch = read_u8(data);
|
|
if (ch < 0x80 || ch > 0xbf)
|
|
goto error;
|
|
ch &= 0x3f;
|
|
ch += code;
|
|
} else if (ch >= 0x80) {
|
|
goto error;
|
|
}
|
|
return ch;
|
|
error:
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* read_string() - read byte from character string
|
|
*
|
|
* @data: - pointer to string
|
|
* Return: - byte read
|
|
*
|
|
* The string pointer is incremented if it does not point to '\0'.
|
|
*/
|
|
static u8 read_string(void *data)
|
|
|
|
{
|
|
const char **src = (const char **)data;
|
|
u8 c;
|
|
|
|
if (!src || !*src || !**src)
|
|
return 0;
|
|
c = **src;
|
|
++*src;
|
|
return c;
|
|
}
|
|
|
|
/**
|
|
* read_console() - read byte from console
|
|
*
|
|
* @data - not used, needed to match interface
|
|
* Return: - byte read or 0 on error
|
|
*/
|
|
static u8 read_console(void *data)
|
|
{
|
|
int ch;
|
|
|
|
ch = getchar();
|
|
if (ch < 0)
|
|
ch = 0;
|
|
return ch;
|
|
}
|
|
|
|
int console_read_unicode(s32 *code)
|
|
{
|
|
for (;;) {
|
|
s32 c;
|
|
|
|
if (!tstc()) {
|
|
/* No input available */
|
|
return 1;
|
|
}
|
|
|
|
/* Read Unicode code */
|
|
c = get_code(read_console, NULL);
|
|
if (c > 0) {
|
|
*code = c;
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
s32 utf8_get(const char **src)
|
|
{
|
|
return get_code(read_string, src);
|
|
}
|
|
|
|
int utf8_put(s32 code, char **dst)
|
|
{
|
|
if (!dst || !*dst)
|
|
return -1;
|
|
if ((code >= 0xD800 && code <= 0xDFFF) || code >= 0x110000)
|
|
return -1;
|
|
if (code <= 0x007F) {
|
|
**dst = code;
|
|
} else {
|
|
if (code <= 0x07FF) {
|
|
**dst = code >> 6 | 0xC0;
|
|
} else {
|
|
if (code < 0x10000) {
|
|
**dst = code >> 12 | 0xE0;
|
|
} else {
|
|
**dst = code >> 18 | 0xF0;
|
|
++*dst;
|
|
**dst = (code >> 12 & 0x3F) | 0x80;
|
|
}
|
|
++*dst;
|
|
**dst = (code >> 6 & 0x3F) | 0x80;
|
|
}
|
|
++*dst;
|
|
**dst = (code & 0x3F) | 0x80;
|
|
}
|
|
++*dst;
|
|
return 0;
|
|
}
|
|
|
|
size_t utf8_utf16_strnlen(const char *src, size_t count)
|
|
{
|
|
size_t len = 0;
|
|
|
|
for (; *src && count; --count) {
|
|
s32 code = utf8_get(&src);
|
|
|
|
if (!code)
|
|
break;
|
|
if (code < 0) {
|
|
/* Reserve space for a replacement character */
|
|
len += 1;
|
|
} else if (code < 0x10000) {
|
|
len += 1;
|
|
} else {
|
|
len += 2;
|
|
}
|
|
}
|
|
return len;
|
|
}
|
|
|
|
int utf8_utf16_strncpy(u16 **dst, const char *src, size_t count)
|
|
{
|
|
if (!src || !dst || !*dst)
|
|
return -1;
|
|
|
|
for (; count && *src; --count) {
|
|
s32 code = utf8_get(&src);
|
|
|
|
if (code < 0)
|
|
code = '?';
|
|
utf16_put(code, dst);
|
|
}
|
|
**dst = 0;
|
|
return 0;
|
|
}
|
|
|
|
s32 utf16_get(const u16 **src)
|
|
{
|
|
s32 code, code2;
|
|
|
|
if (!src || !*src)
|
|
return -1;
|
|
if (!**src)
|
|
return 0;
|
|
code = **src;
|
|
++*src;
|
|
if (code >= 0xDC00 && code <= 0xDFFF)
|
|
return -1;
|
|
if (code >= 0xD800 && code <= 0xDBFF) {
|
|
if (!**src)
|
|
return -1;
|
|
code &= 0x3ff;
|
|
code <<= 10;
|
|
code += 0x10000;
|
|
code2 = **src;
|
|
++*src;
|
|
if (code2 <= 0xDC00 || code2 >= 0xDFFF)
|
|
return -1;
|
|
code2 &= 0x3ff;
|
|
code += code2;
|
|
}
|
|
return code;
|
|
}
|
|
|
|
int utf16_put(s32 code, u16 **dst)
|
|
{
|
|
if (!dst || !*dst)
|
|
return -1;
|
|
if ((code >= 0xD800 && code <= 0xDFFF) || code >= 0x110000)
|
|
return -1;
|
|
if (code < 0x10000) {
|
|
**dst = code;
|
|
} else {
|
|
code -= 0x10000;
|
|
**dst = code >> 10 | 0xD800;
|
|
++*dst;
|
|
**dst = (code & 0x3ff) | 0xDC00;
|
|
}
|
|
++*dst;
|
|
return 0;
|
|
}
|
|
|
|
size_t utf16_strnlen(const u16 *src, size_t count)
|
|
{
|
|
size_t len = 0;
|
|
|
|
for (; *src && count; --count) {
|
|
s32 code = utf16_get(&src);
|
|
|
|
if (!code)
|
|
break;
|
|
/*
|
|
* In case of an illegal sequence still reserve space for a
|
|
* replacement character.
|
|
*/
|
|
++len;
|
|
}
|
|
return len;
|
|
}
|
|
|
|
size_t utf16_utf8_strnlen(const u16 *src, size_t count)
|
|
{
|
|
size_t len = 0;
|
|
|
|
for (; *src && count; --count) {
|
|
s32 code = utf16_get(&src);
|
|
|
|
if (!code)
|
|
break;
|
|
if (code < 0)
|
|
/* Reserve space for a replacement character */
|
|
len += 1;
|
|
else if (code < 0x80)
|
|
len += 1;
|
|
else if (code < 0x800)
|
|
len += 2;
|
|
else if (code < 0x10000)
|
|
len += 3;
|
|
else
|
|
len += 4;
|
|
}
|
|
return len;
|
|
}
|
|
|
|
int utf16_utf8_strncpy(char **dst, const u16 *src, size_t count)
|
|
{
|
|
if (!src || !dst || !*dst)
|
|
return -1;
|
|
|
|
for (; count && *src; --count) {
|
|
s32 code = utf16_get(&src);
|
|
|
|
if (code < 0)
|
|
code = '?';
|
|
utf8_put(code, dst);
|
|
}
|
|
**dst = 0;
|
|
return 0;
|
|
}
|
|
|
|
s32 utf_to_lower(const s32 code)
|
|
{
|
|
struct capitalization_table *pos = capitalization_table;
|
|
s32 ret = code;
|
|
|
|
if (code <= 0x7f) {
|
|
if (code >= 'A' && code <= 'Z')
|
|
ret += 0x20;
|
|
return ret;
|
|
}
|
|
for (; pos->upper; ++pos) {
|
|
if (pos->upper == code) {
|
|
ret = pos->lower;
|
|
break;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
s32 utf_to_upper(const s32 code)
|
|
{
|
|
struct capitalization_table *pos = capitalization_table;
|
|
s32 ret = code;
|
|
|
|
if (code <= 0x7f) {
|
|
if (code >= 'a' && code <= 'z')
|
|
ret -= 0x20;
|
|
return ret;
|
|
}
|
|
for (; pos->lower; ++pos) {
|
|
if (pos->lower == code) {
|
|
ret = pos->upper;
|
|
break;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* u16_strncmp() - compare two u16 string
|
|
*
|
|
* @s1: first string to compare
|
|
* @s2: second string to compare
|
|
* @n: maximum number of u16 to compare
|
|
* Return: 0 if the first n u16 are the same in s1 and s2
|
|
* < 0 if the first different u16 in s1 is less than the
|
|
* corresponding u16 in s2
|
|
* > 0 if the first different u16 in s1 is greater than the
|
|
* corresponding u16 in s2
|
|
*/
|
|
int u16_strncmp(const u16 *s1, const u16 *s2, size_t n)
|
|
{
|
|
int ret = 0;
|
|
|
|
for (; n; --n, ++s1, ++s2) {
|
|
ret = *s1 - *s2;
|
|
if (ret || !*s1)
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
size_t __efi_runtime u16_strnlen(const u16 *in, size_t count)
|
|
{
|
|
size_t i;
|
|
for (i = 0; count-- && in[i]; i++);
|
|
return i;
|
|
}
|
|
|
|
size_t u16_strsize(const void *in)
|
|
{
|
|
return (u16_strlen(in) + 1) * sizeof(u16);
|
|
}
|
|
|
|
u16 *u16_strcpy(u16 *dest, const u16 *src)
|
|
{
|
|
u16 *tmp = dest;
|
|
|
|
for (;; dest++, src++) {
|
|
*dest = *src;
|
|
if (!*src)
|
|
break;
|
|
}
|
|
|
|
return tmp;
|
|
}
|
|
|
|
u16 *u16_strdup(const void *src)
|
|
{
|
|
u16 *new;
|
|
size_t len;
|
|
|
|
if (!src)
|
|
return NULL;
|
|
len = u16_strsize(src);
|
|
new = malloc(len);
|
|
if (!new)
|
|
return NULL;
|
|
memcpy(new, src, len);
|
|
|
|
return new;
|
|
}
|
|
|
|
/* Convert UTF-16 to UTF-8. */
|
|
uint8_t *utf16_to_utf8(uint8_t *dest, const uint16_t *src, size_t size)
|
|
{
|
|
uint32_t code_high = 0;
|
|
|
|
while (size--) {
|
|
uint32_t code = *src++;
|
|
|
|
if (code_high) {
|
|
if (code >= 0xDC00 && code <= 0xDFFF) {
|
|
/* Surrogate pair. */
|
|
code = ((code_high - 0xD800) << 10) + (code - 0xDC00) + 0x10000;
|
|
|
|
*dest++ = (code >> 18) | 0xF0;
|
|
*dest++ = ((code >> 12) & 0x3F) | 0x80;
|
|
*dest++ = ((code >> 6) & 0x3F) | 0x80;
|
|
*dest++ = (code & 0x3F) | 0x80;
|
|
} else {
|
|
/* Error... */
|
|
*dest++ = '?';
|
|
/* *src may be valid. Don't eat it. */
|
|
src--;
|
|
}
|
|
|
|
code_high = 0;
|
|
} else {
|
|
if (code <= 0x007F) {
|
|
*dest++ = code;
|
|
} else if (code <= 0x07FF) {
|
|
*dest++ = (code >> 6) | 0xC0;
|
|
*dest++ = (code & 0x3F) | 0x80;
|
|
} else if (code >= 0xD800 && code <= 0xDBFF) {
|
|
code_high = code;
|
|
continue;
|
|
} else if (code >= 0xDC00 && code <= 0xDFFF) {
|
|
/* Error... */
|
|
*dest++ = '?';
|
|
} else if (code < 0x10000) {
|
|
*dest++ = (code >> 12) | 0xE0;
|
|
*dest++ = ((code >> 6) & 0x3F) | 0x80;
|
|
*dest++ = (code & 0x3F) | 0x80;
|
|
} else {
|
|
*dest++ = (code >> 18) | 0xF0;
|
|
*dest++ = ((code >> 12) & 0x3F) | 0x80;
|
|
*dest++ = ((code >> 6) & 0x3F) | 0x80;
|
|
*dest++ = (code & 0x3F) | 0x80;
|
|
}
|
|
}
|
|
}
|
|
|
|
return dest;
|
|
}
|
|
|
|
int utf_to_cp(s32 *c, const u16 *codepage)
|
|
{
|
|
if (*c >= 0x80) {
|
|
int j;
|
|
|
|
/* Look up codepage translation */
|
|
for (j = 0; j < 0x80; ++j) {
|
|
if (*c == codepage[j]) {
|
|
*c = j + 0x80;
|
|
return 0;
|
|
}
|
|
}
|
|
*c = '?';
|
|
return -ENOENT;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int utf8_to_cp437_stream(u8 c, char *buffer)
|
|
{
|
|
char *end;
|
|
const char *pos;
|
|
s32 s;
|
|
int ret;
|
|
|
|
for (;;) {
|
|
pos = buffer;
|
|
end = buffer + strlen(buffer);
|
|
*end++ = c;
|
|
*end = 0;
|
|
s = utf8_get(&pos);
|
|
if (s > 0) {
|
|
*buffer = 0;
|
|
ret = utf_to_cp(&s, codepage_437);
|
|
return s;
|
|
}
|
|
if (pos == end)
|
|
return 0;
|
|
*buffer = 0;
|
|
}
|
|
}
|
|
|
|
int utf8_to_utf32_stream(u8 c, char *buffer)
|
|
{
|
|
char *end;
|
|
const char *pos;
|
|
s32 s;
|
|
|
|
for (;;) {
|
|
pos = buffer;
|
|
end = buffer + strlen(buffer);
|
|
*end++ = c;
|
|
*end = 0;
|
|
s = utf8_get(&pos);
|
|
if (s > 0) {
|
|
*buffer = 0;
|
|
return s;
|
|
}
|
|
if (pos == end)
|
|
return 0;
|
|
*buffer = 0;
|
|
}
|
|
}
|