mirror of
https://github.com/yuzu-mirror/yuzu.git
synced 2024-11-14 21:40:01 +00:00
added utf8 to common module, utils for dealing with utf8
This commit is contained in:
ShizZy
parent
511f7b8c10
commit
a8c3c2a391
4 changed files with 534 additions and 0 deletions
|
|
@ -179,6 +179,7 @@
|
|||
<ClInclude Include="src\thread.h" />
|
||||
<ClInclude Include="src\thunk.h" />
|
||||
<ClInclude Include="src\timer.h" />
|
||||
<ClInclude Include="src\utf8.h" />
|
||||
</ItemGroup>
|
||||
<ItemGroup>
|
||||
<ClCompile Include="src\break_points.cpp" />
|
||||
|
|
@ -196,6 +197,7 @@
|
|||
<ClCompile Include="src\string_util.cpp" />
|
||||
<ClCompile Include="src\thread.cpp" />
|
||||
<ClCompile Include="src\timer.cpp" />
|
||||
<ClCompile Include="src\utf8.cpp" />
|
||||
<ClCompile Include="src\version.cpp" />
|
||||
</ItemGroup>
|
||||
<ItemGroup>
|
||||
|
|
|
|||
|
|
@ -17,6 +17,7 @@
|
|||
<ClCompile Include="src\thread.cpp" />
|
||||
<ClCompile Include="src\timer.cpp" />
|
||||
<ClCompile Include="src\version.cpp" />
|
||||
<ClCompile Include="src\utf8.cpp" />
|
||||
</ItemGroup>
|
||||
<ItemGroup>
|
||||
<ClInclude Include="src\atomic.h" />
|
||||
|
|
@ -55,6 +56,7 @@
|
|||
<ClInclude Include="src\emu_window.h" />
|
||||
<ClInclude Include="src\platform.h" />
|
||||
<ClInclude Include="src\swap.h" />
|
||||
<ClInclude Include="src\utf8.h" />
|
||||
</ItemGroup>
|
||||
<ItemGroup>
|
||||
<None Include="CMakeLists.txt" />
|
||||
|
|
|
|||
463
src/common/src/utf8.cpp
Normal file
463
src/common/src/utf8.cpp
Normal file
|
|
@ -0,0 +1,463 @@
|
|||
/*
|
||||
Basic UTF-8 manipulation routines
|
||||
by Jeff Bezanson
|
||||
placed in the public domain Fall 2005
|
||||
|
||||
This code is designed to provide the utilities you need to manipulate
|
||||
UTF-8 as an internal string encoding. These functions do not perform the
|
||||
error checking normally needed when handling UTF-8 data, so if you happen
|
||||
to be from the Unicode Consortium you will want to flay me alive.
|
||||
I do this because error checking can be performed at the boundaries (I/O),
|
||||
with these routines reserved for higher performance on data known to be
|
||||
valid.
|
||||
*/
|
||||
|
||||
#ifdef _WIN32
|
||||
#include <windows.h>
|
||||
#undef min
|
||||
#undef max
|
||||
#endif
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <stdarg.h>
|
||||
|
||||
#include <algorithm>
|
||||
#include <string>
|
||||
|
||||
#include "common_types.h"
|
||||
#include "utf8.h"
|
||||
|
||||
// is start of UTF sequence
|
||||
inline bool isutf(char c) {
|
||||
return (c & 0xC0) != 0x80;
|
||||
}
|
||||
|
||||
static const u32 offsetsFromUTF8[6] = {
|
||||
0x00000000UL, 0x00003080UL, 0x000E2080UL,
|
||||
0x03C82080UL, 0xFA082080UL, 0x82082080UL
|
||||
};
|
||||
|
||||
static const u8 trailingBytesForUTF8[256] = {
|
||||
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
||||
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
||||
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
||||
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
||||
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
||||
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
||||
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
|
||||
2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 3,3,3,3,3,3,3,3,4,4,4,4,5,5,5,5,
|
||||
};
|
||||
|
||||
/* returns length of next utf-8 sequence */
|
||||
int u8_seqlen(const char *s)
|
||||
{
|
||||
return trailingBytesForUTF8[(unsigned int)(unsigned char)s[0]] + 1;
|
||||
}
|
||||
|
||||
/* conversions without error checking
|
||||
only works for valid UTF-8, i.e. no 5- or 6-byte sequences
|
||||
srcsz = source size in bytes, or -1 if 0-terminated
|
||||
sz = dest size in # of wide characters
|
||||
|
||||
returns # characters converted
|
||||
dest will always be L'\0'-terminated, even if there isn't enough room
|
||||
for all the characters.
|
||||
if sz = srcsz+1 (i.e. 4*srcsz+4 bytes), there will always be enough space.
|
||||
*/
|
||||
int u8_toucs(u32 *dest, int sz, const char *src, int srcsz)
|
||||
{
|
||||
u32 ch;
|
||||
const char *src_end = src + srcsz;
|
||||
int nb;
|
||||
int i=0;
|
||||
|
||||
while (i < sz-1) {
|
||||
nb = trailingBytesForUTF8[(unsigned char)*src];
|
||||
if (srcsz == -1) {
|
||||
if (*src == 0)
|
||||
goto done_toucs;
|
||||
}
|
||||
else {
|
||||
if (src + nb >= src_end)
|
||||
goto done_toucs;
|
||||
}
|
||||
ch = 0;
|
||||
switch (nb) {
|
||||
/* these fall through deliberately */
|
||||
case 3: ch += (unsigned char)*src++; ch <<= 6;
|
||||
case 2: ch += (unsigned char)*src++; ch <<= 6;
|
||||
case 1: ch += (unsigned char)*src++; ch <<= 6;
|
||||
case 0: ch += (unsigned char)*src++;
|
||||
}
|
||||
ch -= offsetsFromUTF8[nb];
|
||||
dest[i++] = ch;
|
||||
}
|
||||
done_toucs:
|
||||
dest[i] = 0;
|
||||
return i;
|
||||
}
|
||||
|
||||
/* srcsz = number of source characters, or -1 if 0-terminated
|
||||
sz = size of dest buffer in bytes
|
||||
|
||||
returns # characters converted
|
||||
dest will only be '\0'-terminated if there is enough space. this is
|
||||
for consistency; imagine there are 2 bytes of space left, but the next
|
||||
character requires 3 bytes. in this case we could NUL-terminate, but in
|
||||
general we can't when there's insufficient space. therefore this function
|
||||
only NUL-terminates if all the characters fit, and there's space for
|
||||
the NUL as well.
|
||||
the destination string will never be bigger than the source string.
|
||||
*/
|
||||
int u8_toutf8(char *dest, int sz, u32 *src, int srcsz)
|
||||
{
|
||||
u32 ch;
|
||||
int i = 0;
|
||||
char *dest_end = dest + sz;
|
||||
|
||||
while (srcsz<0 ? src[i]!=0 : i < srcsz) {
|
||||
ch = src[i];
|
||||
if (ch < 0x80) {
|
||||
if (dest >= dest_end)
|
||||
return i;
|
||||
*dest++ = (char)ch;
|
||||
}
|
||||
else if (ch < 0x800) {
|
||||
if (dest >= dest_end-1)
|
||||
return i;
|
||||
*dest++ = (ch>>6) | 0xC0;
|
||||
*dest++ = (ch & 0x3F) | 0x80;
|
||||
}
|
||||
else if (ch < 0x10000) {
|
||||
if (dest >= dest_end-2)
|
||||
return i;
|
||||
*dest++ = (ch>>12) | 0xE0;
|
||||
*dest++ = ((ch>>6) & 0x3F) | 0x80;
|
||||
*dest++ = (ch & 0x3F) | 0x80;
|
||||
}
|
||||
else if (ch < 0x110000) {
|
||||
if (dest >= dest_end-3)
|
||||
return i;
|
||||
*dest++ = (ch>>18) | 0xF0;
|
||||
*dest++ = ((ch>>12) & 0x3F) | 0x80;
|
||||
*dest++ = ((ch>>6) & 0x3F) | 0x80;
|
||||
*dest++ = (ch & 0x3F) | 0x80;
|
||||
}
|
||||
i++;
|
||||
}
|
||||
if (dest < dest_end)
|
||||
*dest = '\0';
|
||||
return i;
|
||||
}
|
||||
|
||||
int u8_wc_toutf8(char *dest, u32 ch)
|
||||
{
|
||||
if (ch < 0x80) {
|
||||
dest[0] = (char)ch;
|
||||
return 1;
|
||||
}
|
||||
if (ch < 0x800) {
|
||||
dest[0] = (ch>>6) | 0xC0;
|
||||
dest[1] = (ch & 0x3F) | 0x80;
|
||||
return 2;
|
||||
}
|
||||
if (ch < 0x10000) {
|
||||
dest[0] = (ch>>12) | 0xE0;
|
||||
dest[1] = ((ch>>6) & 0x3F) | 0x80;
|
||||
dest[2] = (ch & 0x3F) | 0x80;
|
||||
return 3;
|
||||
}
|
||||
if (ch < 0x110000) {
|
||||
dest[0] = (ch>>18) | 0xF0;
|
||||
dest[1] = ((ch>>12) & 0x3F) | 0x80;
|
||||
dest[2] = ((ch>>6) & 0x3F) | 0x80;
|
||||
dest[3] = (ch & 0x3F) | 0x80;
|
||||
return 4;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* charnum => byte offset */
|
||||
int u8_offset(const char *str, int charnum)
|
||||
{
|
||||
int offs=0;
|
||||
|
||||
while (charnum > 0 && str[offs]) {
|
||||
(void)(isutf(str[++offs]) || isutf(str[++offs]) ||
|
||||
isutf(str[++offs]) || ++offs);
|
||||
charnum--;
|
||||
}
|
||||
return offs;
|
||||
}
|
||||
|
||||
/* byte offset => charnum */
|
||||
int u8_charnum(const char *s, int offset)
|
||||
{
|
||||
int charnum = 0, offs=0;
|
||||
|
||||
while (offs < offset && s[offs]) {
|
||||
(void)(isutf(s[++offs]) || isutf(s[++offs]) ||
|
||||
isutf(s[++offs]) || ++offs);
|
||||
charnum++;
|
||||
}
|
||||
return charnum;
|
||||
}
|
||||
|
||||
/* number of characters */
|
||||
int u8_strlen(const char *s)
|
||||
{
|
||||
int count = 0;
|
||||
int i = 0;
|
||||
|
||||
while (u8_nextchar(s, &i) != 0)
|
||||
count++;
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
/* reads the next utf-8 sequence out of a string, updating an index */
|
||||
u32 u8_nextchar(const char *s, int *i)
|
||||
{
|
||||
u32 ch = 0;
|
||||
int sz = 0;
|
||||
|
||||
do {
|
||||
ch <<= 6;
|
||||
ch += (unsigned char)s[(*i)++];
|
||||
sz++;
|
||||
} while (s[*i] && !isutf(s[*i]));
|
||||
ch -= offsetsFromUTF8[sz-1];
|
||||
|
||||
return ch;
|
||||
}
|
||||
|
||||
void u8_inc(const char *s, int *i)
|
||||
{
|
||||
(void)(isutf(s[++(*i)]) || isutf(s[++(*i)]) ||
|
||||
isutf(s[++(*i)]) || ++(*i));
|
||||
}
|
||||
|
||||
void u8_dec(const char *s, int *i)
|
||||
{
|
||||
(void)(isutf(s[--(*i)]) || isutf(s[--(*i)]) ||
|
||||
isutf(s[--(*i)]) || --(*i));
|
||||
}
|
||||
|
||||
int octal_digit(char c)
|
||||
{
|
||||
return (c >= '0' && c <= '7');
|
||||
}
|
||||
|
||||
int hex_digit(char c)
|
||||
{
|
||||
return ((c >= '0' && c <= '9') ||
|
||||
(c >= 'A' && c <= 'F') ||
|
||||
(c >= 'a' && c <= 'f'));
|
||||
}
|
||||
|
||||
/* assumes that src points to the character after a backslash
|
||||
returns number of input characters processed */
|
||||
int u8_read_escape_sequence(const char *str, u32 *dest)
|
||||
{
|
||||
u32 ch;
|
||||
char digs[9]="\0\0\0\0\0\0\0\0";
|
||||
int dno=0, i=1;
|
||||
|
||||
ch = (u32)str[0]; /* take literal character */
|
||||
if (str[0] == 'n')
|
||||
ch = L'\n';
|
||||
else if (str[0] == 't')
|
||||
ch = L'\t';
|
||||
else if (str[0] == 'r')
|
||||
ch = L'\r';
|
||||
else if (str[0] == 'b')
|
||||
ch = L'\b';
|
||||
else if (str[0] == 'f')
|
||||
ch = L'\f';
|
||||
else if (str[0] == 'v')
|
||||
ch = L'\v';
|
||||
else if (str[0] == 'a')
|
||||
ch = L'\a';
|
||||
else if (octal_digit(str[0])) {
|
||||
i = 0;
|
||||
do {
|
||||
digs[dno++] = str[i++];
|
||||
} while (octal_digit(str[i]) && dno < 3);
|
||||
ch = strtol(digs, NULL, 8);
|
||||
}
|
||||
else if (str[0] == 'x') {
|
||||
while (hex_digit(str[i]) && dno < 2) {
|
||||
digs[dno++] = str[i++];
|
||||
}
|
||||
if (dno > 0)
|
||||
ch = strtol(digs, NULL, 16);
|
||||
}
|
||||
else if (str[0] == 'u') {
|
||||
while (hex_digit(str[i]) && dno < 4) {
|
||||
digs[dno++] = str[i++];
|
||||
}
|
||||
if (dno > 0)
|
||||
ch = strtol(digs, NULL, 16);
|
||||
}
|
||||
else if (str[0] == 'U') {
|
||||
while (hex_digit(str[i]) && dno < 8) {
|
||||
digs[dno++] = str[i++];
|
||||
}
|
||||
if (dno > 0)
|
||||
ch = strtol(digs, NULL, 16);
|
||||
}
|
||||
*dest = ch;
|
||||
|
||||
return i;
|
||||
}
|
||||
|
||||
/* convert a string with literal \uxxxx or \Uxxxxxxxx characters to UTF-8
|
||||
example: u8_unescape(mybuf, 256, "hello\\u220e")
|
||||
note the double backslash is needed if called on a C string literal */
|
||||
int u8_unescape(char *buf, int sz, char *src)
|
||||
{
|
||||
int c=0, amt;
|
||||
u32 ch;
|
||||
char temp[4];
|
||||
|
||||
while (*src && c < sz) {
|
||||
if (*src == '\\') {
|
||||
src++;
|
||||
amt = u8_read_escape_sequence(src, &ch);
|
||||
}
|
||||
else {
|
||||
ch = (u32)*src;
|
||||
amt = 1;
|
||||
}
|
||||
src += amt;
|
||||
amt = u8_wc_toutf8(temp, ch);
|
||||
if (amt > sz-c)
|
||||
break;
|
||||
memcpy(&buf[c], temp, amt);
|
||||
c += amt;
|
||||
}
|
||||
if (c < sz)
|
||||
buf[c] = '\0';
|
||||
return c;
|
||||
}
|
||||
|
||||
const char *u8_strchr(const char *s, u32 ch, int *charn)
|
||||
{
|
||||
int i = 0, lasti=0;
|
||||
u32 c;
|
||||
|
||||
*charn = 0;
|
||||
while (s[i]) {
|
||||
c = u8_nextchar(s, &i);
|
||||
if (c == ch) {
|
||||
return &s[lasti];
|
||||
}
|
||||
lasti = i;
|
||||
(*charn)++;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
const char *u8_memchr(const char *s, u32 ch, size_t sz, int *charn)
|
||||
{
|
||||
u32 i = 0, lasti=0;
|
||||
u32 c;
|
||||
int csz;
|
||||
|
||||
*charn = 0;
|
||||
while (i < sz) {
|
||||
c = csz = 0;
|
||||
do {
|
||||
c <<= 6;
|
||||
c += (unsigned char)s[i++];
|
||||
csz++;
|
||||
} while (i < sz && !isutf(s[i]));
|
||||
c -= offsetsFromUTF8[csz-1];
|
||||
|
||||
if (c == ch) {
|
||||
return &s[lasti];
|
||||
}
|
||||
lasti = i;
|
||||
(*charn)++;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
int u8_is_locale_utf8(const char *locale)
|
||||
{
|
||||
/* this code based on libutf8 */
|
||||
const char* cp = locale;
|
||||
|
||||
for (; *cp != '\0' && *cp != '@' && *cp != '+' && *cp != ','; cp++) {
|
||||
if (*cp == '.') {
|
||||
const char* encoding = ++cp;
|
||||
for (; *cp != '\0' && *cp != '@' && *cp != '+' && *cp != ','; cp++)
|
||||
;
|
||||
if ((cp-encoding == 5 && !strncmp(encoding, "UTF-8", 5))
|
||||
|| (cp-encoding == 4 && !strncmp(encoding, "utf8", 4)))
|
||||
return 1; /* it's UTF-8 */
|
||||
break;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
int UTF8StringNonASCIICount(const char *utf8string) {
|
||||
UTF8 utf(utf8string);
|
||||
int count = 0;
|
||||
while (!utf.end()) {
|
||||
int c = utf.next();
|
||||
if (c > 127)
|
||||
++count;
|
||||
}
|
||||
return count;
|
||||
}
|
||||
|
||||
bool UTF8StringHasNonASCII(const char *utf8string) {
|
||||
return UTF8StringNonASCIICount(utf8string) > 0;
|
||||
}
|
||||
|
||||
#ifdef _WIN32
|
||||
|
||||
std::string ConvertWStringToUTF8(const wchar_t *wstr) {
|
||||
int len = (int)wcslen(wstr);
|
||||
int size = (int)WideCharToMultiByte(CP_UTF8, 0, wstr, len, 0, 0, NULL, NULL);
|
||||
std::string s;
|
||||
s.resize(size);
|
||||
if (size > 0) {
|
||||
WideCharToMultiByte(CP_UTF8, 0, wstr, len, &s[0], size, NULL, NULL);
|
||||
}
|
||||
return s;
|
||||
}
|
||||
|
||||
std::string ConvertWStringToUTF8(const std::wstring &wstr) {
|
||||
int len = (int)wstr.size();
|
||||
int size = (int)WideCharToMultiByte(CP_UTF8, 0, wstr.c_str(), len, 0, 0, NULL, NULL);
|
||||
std::string s;
|
||||
s.resize(size);
|
||||
if (size > 0) {
|
||||
WideCharToMultiByte(CP_UTF8, 0, wstr.c_str(), len, &s[0], size, NULL, NULL);
|
||||
}
|
||||
return s;
|
||||
}
|
||||
|
||||
void ConvertUTF8ToWString(wchar_t *dest, size_t destSize, const std::string &source) {
|
||||
int len = (int)source.size();
|
||||
int size = (int)MultiByteToWideChar(CP_UTF8, 0, source.c_str(), len, NULL, 0);
|
||||
MultiByteToWideChar(CP_UTF8, 0, source.c_str(), len, dest, std::min((int)destSize, size));
|
||||
}
|
||||
|
||||
std::wstring ConvertUTF8ToWString(const std::string &source) {
|
||||
int len = (int)source.size();
|
||||
int size = (int)MultiByteToWideChar(CP_UTF8, 0, source.c_str(), len, NULL, 0);
|
||||
std::wstring str;
|
||||
str.resize(size);
|
||||
if (size > 0) {
|
||||
MultiByteToWideChar(CP_UTF8, 0, source.c_str(), len, &str[0], size);
|
||||
}
|
||||
return str;
|
||||
}
|
||||
|
||||
#endif
|
||||
67
src/common/src/utf8.h
Normal file
67
src/common/src/utf8.h
Normal file
|
|
@ -0,0 +1,67 @@
|
|||
/*
|
||||
Basic UTF-8 manipulation routines
|
||||
by Jeff Bezanson
|
||||
placed in the public domain Fall 2005
|
||||
|
||||
This code is designed to provide the utilities you need to manipulate
|
||||
UTF-8 as an internal string encoding. These functions do not perform the
|
||||
error checking normally needed when handling UTF-8 data, so if you happen
|
||||
to be from the Unicode Consortium you will want to flay me alive.
|
||||
I do this because error checking can be performed at the boundaries (I/O),
|
||||
with these routines reserved for higher performance on data known to be
|
||||
valid.
|
||||
*/
|
||||
|
||||
// Further modified, and C++ stuff added, by hrydgard@gmail.com.
|
||||
|
||||
#pragma once
|
||||
|
||||
#include "common_types.h"
|
||||
#include <string>
|
||||
|
||||
u32 u8_nextchar(const char *s, int *i);
|
||||
int u8_wc_toutf8(char *dest, u32 ch);
|
||||
int u8_strlen(const char *s);
|
||||
|
||||
class UTF8 {
|
||||
public:
|
||||
static const u32 INVALID = (u32)-1;
|
||||
UTF8(const char *c) : c_(c), index_(0) {}
|
||||
bool end() const { return c_[index_] == 0; }
|
||||
u32 next() {
|
||||
return u8_nextchar(c_, &index_);
|
||||
}
|
||||
u32 peek() {
|
||||
int tempIndex = index_;
|
||||
return u8_nextchar(c_, &tempIndex);
|
||||
}
|
||||
int length() const {
|
||||
return u8_strlen(c_);
|
||||
}
|
||||
int byteIndex() const {
|
||||
return index_;
|
||||
}
|
||||
static int encode(char *dest, u32 ch) {
|
||||
return u8_wc_toutf8(dest, ch);
|
||||
}
|
||||
|
||||
private:
|
||||
const char *c_;
|
||||
int index_;
|
||||
};
|
||||
|
||||
int UTF8StringNonASCIICount(const char *utf8string);
|
||||
|
||||
bool UTF8StringHasNonASCII(const char *utf8string);
|
||||
|
||||
|
||||
// UTF8 to Win32 UTF-16
|
||||
// Should be used when calling Win32 api calls
|
||||
#ifdef _WIN32
|
||||
|
||||
std::string ConvertWStringToUTF8(const std::wstring &wstr);
|
||||
std::string ConvertWStringToUTF8(const wchar_t *wstr);
|
||||
void ConvertUTF8ToWString(wchar_t *dest, size_t destSize, const std::string &source);
|
||||
std::wstring ConvertUTF8ToWString(const std::string &source);
|
||||
|
||||
#endif
|
||||
Loading…
Reference in a new issue