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/* Portions taken from:
Copyright (C) 2005 Roland BROCHARD
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "string_utils.h"
#include <algorithm>
#include <assert.h>
namespace Shared { namespace Util {
#ifndef WIN32
int ASCIItoUTF8(const Shared::Platform::byte c, Shared::Platform::byte *out) {
#else
int ASCIItoUTF8(const byte c, byte *out) {
#endif
if (c < 0x80) {
*out = c;
return 1;
}
else if(c < 0xC0) {
out[0] = 0xC2;
out[1] = c;
return 2;
}
out[0] = 0xC3;
out[1] = c - 0x40;
return 2;
}
char* ConvertToUTF8(const char* s, Shared::Platform::uint32 len, Shared::Platform::uint32& newSize) {
if (NULL == s || '\0' == *s) {
char* ret = new char[1];
//LOG_ASSERT(NULL != ret);
assert(NULL != ret);
*ret = '\0';
return ret;
}
#ifndef WIN32
Shared::Platform::byte tmp[4];
#else
byte tmp[4];
#endif
newSize = 1;
#ifndef WIN32
for(Shared::Platform::byte *p = (Shared::Platform::byte*)s ; *p ; p++)
#else
for(byte *p = (byte*)s ; *p ; p++)
#endif
newSize += ASCIItoUTF8(*p, tmp);
char* ret = new char[newSize];
//LOG_ASSERT(NULL != ret);
assert(NULL != ret);
#ifndef WIN32
Shared::Platform::byte *q = (Shared::Platform::byte*)ret;
for(Shared::Platform::byte *p = (Shared::Platform::byte*)s ; *p ; p++)
#else
byte *q = (byte*)ret;
for(byte *p = (byte*)s ; *p ; p++)
#endif
q += ASCIItoUTF8(*p, q);
*q = '\0'; // A bit paranoid
return ret;
}
char* ConvertToUTF8(const char* s, const Shared::Platform::uint32 len) {
Shared::Platform::uint32 nws;
return ConvertToUTF8(s, len, nws);
}
char* ConvertToUTF8(const char* s) {
if (NULL != s && *s != '\0')
return ConvertToUTF8(s, (Shared::Platform::uint32)strlen(s));
char* ret = new char[1];
//LOG_ASSERT(NULL != ret);
assert(NULL != ret);
*ret = '\0';
return ret;
}
char* ConvertFromUTF8(const char* str) {
const unsigned char *in = reinterpret_cast<const unsigned char*>(str);
int len = (int)strlen(str);
char *out = new char[len*8];
memset(out,0,len*8);
int outc;
int inpos = 0;
int outpos = 0;
while (inpos < len || len == -1) {
if (in[inpos]<0x80) {
out[outpos++] = in[inpos];
if (in[inpos] == 0 && len == -1)
break;
inpos++;
}
else if (in[inpos]<0xE0) {
// Shouldn't happen.
if(in[inpos]<0xC0 || (len!=-1 && inpos+1 >= len) ||
(in[inpos+1]&0xC0)!= 0x80) {
out[outpos++] = '?';
inpos++;
continue;
}
outc = ((((wchar_t)in[inpos])&0x1F)<<6) |
(((wchar_t)in[inpos+1])&0x3F);
if (outc < 256)
out[outpos] = ((char*)&outc)[0];
else
out[outpos] = '?';
outpos++;
inpos+=2;
}
else if (in[inpos]<0xF0) {
// Shouldn't happen.
if ((len!=-1 && inpos+2 >= len) ||
(in[inpos+1]&0xC0)!= 0x80 ||
(in[inpos+2]&0xC0)!= 0x80) {
out[outpos++] = '?';
inpos++;
continue;
}
out[outpos++] = '?';
inpos+=3;
}
else if (in[inpos]<0xF8) {
// Shouldn't happen.
if ((len!=-1 && inpos+3 >= len) ||
(in[inpos+1]&0xC0)!= 0x80 ||
(in[inpos+2]&0xC0)!= 0x80 ||
(in[inpos+3]&0xC0)!= 0x80) {
out[outpos++] = '?';
inpos++;
continue;
}
out[outpos++] = '?';
inpos+=4;
}
else {
out[outpos++] = '?';
inpos++;
}
}
return out;
}
WString::WString(const char* s)
{
if (s)
fromUtf8(s, strlen(s));
else
pBuffer[0] = 0;
}
WString::WString(const std::string& s)
{
fromUtf8(s.c_str(), s.size());
}
void WString::fromUtf8(const char* str, size_t length)
{
int len = 0;
for(unsigned int i = 0 ; i < length; i++)
{
#ifndef WIN32
if (((Shared::Platform::byte)str[i]) < 0x80)
#else
if (((byte)str[i]) < 0x80)
#endif
{
#ifndef WIN32
pBuffer[len++] = ((Shared::Platform::byte)str[i]);
#else
pBuffer[len++] = ((byte)str[i]);
#endif
continue;
}
#ifndef WIN32
if (((Shared::Platform::byte)str[i]) >= 0xC0)
{
wchar_t c = ((Shared::Platform::byte)str[i++]) - 0xC0;
while(((Shared::Platform::byte)str[i]) >= 0x80)
c = (c << 6) | (((Shared::Platform::byte)str[i++]) - 0x80);
#else
if (((byte)str[i]) >= 0xC0)
{
wchar_t c = ((byte)str[i++]) - 0xC0;
while(((byte)str[i]) >= 0x80)
c = (c << 6) | (((byte)str[i++]) - 0x80);
#endif
--i;
pBuffer[len++] = c;
continue;
}
}
pBuffer[len] = 0;
}
void strrev(char *p) {
if(p != NULL) {
char *q = p;
while(q && *q) ++q;
for(--q; p < q; ++p, --q)
*p = *p ^ *q,
*q = *p ^ *q,
*p = *p ^ *q;
}
}
#define SWP(x,y) (x^=y, y^=x, x^=y)
void strrev_utf8(char *p) {
//printf("In [%s::%s] Line: %d\n",__FILE__,__FUNCTION__,__LINE__); fflush(stdout);
char *q = p;
strrev(p); /* call base case */
//printf("In [%s::%s] Line: %d\n",__FILE__,__FUNCTION__,__LINE__); fflush(stdout);
/* Ok, now fix bass-ackwards UTF chars. */
while(q && *q) ++q; /* find eos */
//printf("In [%s::%s] Line: %d\n",__FILE__,__FUNCTION__,__LINE__); fflush(stdout);
while(p < --q) {
//printf("In [%s::%s] Line: %d p [%s] q [%s]\n",__FILE__,__FUNCTION__,__LINE__,p,q); fflush(stdout);
switch( (*q & 0xF0) >> 4 ) {
case 0xF: /* U+010000-U+10FFFF: four bytes. */
//printf("In [%s::%s] Line: %d\n",__FILE__,__FUNCTION__,__LINE__); fflush(stdout);
SWP(*(q-0), *(q-3));
//printf("In [%s::%s] Line: %d\n",__FILE__,__FUNCTION__,__LINE__); fflush(stdout);
SWP(*(q-1), *(q-2));
//printf("In [%s::%s] Line: %d\n",__FILE__,__FUNCTION__,__LINE__); fflush(stdout);
q -= 3;
break;
case 0xE: /* U+000800-U+00FFFF: three bytes. */
//printf("In [%s::%s] Line: %d\n",__FILE__,__FUNCTION__,__LINE__); fflush(stdout);
SWP(*(q-0), *(q-2));
//printf("In [%s::%s] Line: %d\n",__FILE__,__FUNCTION__,__LINE__); fflush(stdout);
q -= 2;
break;
case 0xC: /* fall-through */
case 0xD: /* U+000080-U+0007FF: two bytes. */
//printf("In [%s::%s] Line: %d\n",__FILE__,__FUNCTION__,__LINE__); fflush(stdout);
SWP(*(q-0), *(q-1));
//printf("In [%s::%s] Line: %d\n",__FILE__,__FUNCTION__,__LINE__); fflush(stdout);
q--;
break;
}
//printf("In [%s::%s] Line: %d\n",__FILE__,__FUNCTION__,__LINE__); fflush(stdout);
}
//printf("In [%s::%s] Line: %d p [%s]\n",__FILE__,__FUNCTION__,__LINE__,p); fflush(stdout);
}
void strrev_utf8(std::string &p) {
//printf("In [%s::%s] Line: %d\n",__FILE__,__FUNCTION__,__LINE__); fflush(stdout);
if(p.length() > 0) {
//printf("In [%s::%s] Line: %d\n",__FILE__,__FUNCTION__,__LINE__); fflush(stdout);
int bufSize = (int)p.length()*4;
char *szBuf = new char[bufSize];
memset(szBuf,0,bufSize);
strcpy(szBuf,p.c_str());
//szBuf[bufSize] = '\0';
strrev_utf8(szBuf);
//printf("In [%s::%s] Line: %d\n",__FILE__,__FUNCTION__,__LINE__); fflush(stdout);
p = std::string(szBuf);
//printf("In [%s::%s] Line: %d bufSize = %d p.size() = %d p [%s]\n",__FILE__,__FUNCTION__,__LINE__,bufSize,p.length(),p.c_str()); fflush(stdout);
delete [] szBuf;
//printf("In [%s::%s] Line: %d\n",__FILE__,__FUNCTION__,__LINE__); fflush(stdout);
}
//printf("In [%s::%s] Line: %d\n",__FILE__,__FUNCTION__,__LINE__); fflush(stdout);
}
bool is_string_all_ascii(std::string str) {
bool result = true;
for(unsigned int i = 0; i < str.length(); ++i) {
if(isascii(str[i]) == false) {
result = false;
break;
}
}
return result;
}
int getUTF8_Width(const char *str) {
int ewidth = 0;
const unsigned char *s = (const unsigned char *)str;
if (!str) {
return 0;
}
if(*s <= 0x7F) {
ewidth = 0;
}
else if (0xC2 <= *s && *s <= 0xDF) {
ewidth = 1;
}
else if (0xE0 <= *s && *s <= 0xEF) {
ewidth = 2;
}
else if (0xF0 <= *s && *s <= 0xF4) {
ewidth = 3;
}
else {
ewidth = 0;
}
for ( ; *s && ewidth > 0; s++, ewidth--);
return s - (const unsigned char *)str + 1;
}
}}
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