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new and better working implementations for conversion functions, including better abstraction

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4161 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
shatty
2003-07-31 07:17:30 +00:00
parent aa02972ee8
commit 9c5fdc6c2a
1 changed files with 36 additions and 31 deletions
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src/kits/support/utf8_conversions.cpp
+36 -31
View File
@@ -4,10 +4,41 @@
#include <CharacterSetRoster.h>
#include <Errors.h>
#include <errno.h>
#include <iostream.h>
using namespace BPrivate;
typedef char ** input_buffer_t;
typedef const char ** input_buffer_t;
status_t
convert_encoding(const char * from, const char * to,
const char * src, int32 * srcLen,
char * dst, int32 * dstLen,
int32 * state)
{
iconv_t conversion = iconv_open(to,from);
if (conversion == (iconv_t)-1) {
return B_ERROR;
}
if (state == 0) {
return B_ERROR;
}
if (*state == 0) {
iconv(conversion,0,0,0,0);
*state = 1;
}
input_buffer_t inputBuffer = const_cast<input_buffer_t>(&src);
size_t inputLeft = *srcLen;
size_t outputLeft = *dstLen;
size_t bytesLeft = iconv(conversion,inputBuffer,&inputLeft,&dst,&outputLeft);
*srcLen -= inputLeft;
*dstLen -= outputLeft;
if ((bytesLeft != 0) && (errno != E2BIG) && (errno != EINVAL)) {
return B_ERROR;
}
iconv_close(conversion);
return B_OK;
}
status_t
convert_to_utf8(uint32 srcEncoding,
@@ -17,23 +48,10 @@ convert_to_utf8(uint32 srcEncoding,
{
const BCharacterSet * charset = BCharacterSetRoster::GetCharacterSetByConversionID(srcEncoding);
if (charset == 0) {
return B_ERROR;
}
iconv_t conversion = iconv_open("UTF-8",charset->GetName());
if (conversion == (iconv_t)-1) {
cout << "no charset for #: " << srcEncoding << endl;
return B_ERROR;
}
input_buffer_t inputBuffer = const_cast<input_buffer_t>(&src);
size_t charsLeft = *dstLen;
size_t inputLength = *srcLen;
size_t bytesLeft = iconv(conversion,inputBuffer,&inputLength,&dst,&charsLeft);
*srcLen = inputLength;
*dstLen -= charsLeft;
if ((bytesLeft != 0) && (errno != E2BIG) && (errno != EINVAL)) {
return B_ERROR;
}
iconv_close(conversion);
return B_OK;
return convert_encoding(charset->GetName(),"UTF-8",src,srcLen,dst,dstLen,state);
}
status_t
@@ -44,21 +62,8 @@ convert_from_utf8(uint32 dstEncoding,
{
const BCharacterSet * charset = BCharacterSetRoster::GetCharacterSetByConversionID(dstEncoding);
if (charset == 0) {
cout << "no charset for #: " << dstEncoding << endl;
return B_ERROR;
}
iconv_t conversion = iconv_open(charset->GetName(),"UTF-8");
if (conversion == (iconv_t)-1) {
return B_ERROR;
}
input_buffer_t inputBuffer = const_cast<input_buffer_t>(&src);
size_t charsLeft = *dstLen;
size_t inputLength = *srcLen;
size_t bytesLeft = iconv(conversion,inputBuffer,&inputLength,&dst,&charsLeft);
*srcLen = inputLength;
*dstLen -= charsLeft;
if ((bytesLeft != 0) && (errno != E2BIG) && (errno != EINVAL)) {
return B_ERROR;
}
iconv_close(conversion);
return B_OK;
return convert_encoding("UTF-8",charset->GetName(),src,srcLen,dst,dstLen,state);
}