73 lines
2.0 KiB
C++
73 lines
2.0 KiB
C++
// Scintilla source code edit control
|
|
// Converter.h - Encapsulation of iconv
|
|
// Copyright 2004 by Neil Hodgson <neilh@scintilla.org>
|
|
// The License.txt file describes the conditions under which this software may be distributed.
|
|
|
|
#ifndef CONVERTER_H
|
|
#define CONVERTER_H
|
|
|
|
namespace Scintilla {
|
|
|
|
const GIConv iconvhBad = (GIConv)(-1);
|
|
const gsize sizeFailure = static_cast<gsize>(-1);
|
|
/**
|
|
* Encapsulate g_iconv safely.
|
|
*/
|
|
class Converter {
|
|
GIConv iconvh = iconvhBad;
|
|
void OpenHandle(const char *fullDestination, const char *charSetSource) noexcept {
|
|
iconvh = g_iconv_open(fullDestination, charSetSource);
|
|
}
|
|
bool Succeeded() const noexcept {
|
|
return iconvh != iconvhBad;
|
|
}
|
|
public:
|
|
Converter() noexcept = default;
|
|
Converter(const char *charSetDestination, const char *charSetSource, bool transliterations) {
|
|
Open(charSetDestination, charSetSource, transliterations);
|
|
}
|
|
// Deleted so Converter objects can not be copied.
|
|
Converter(const Converter &) = delete;
|
|
Converter(Converter &&) = delete;
|
|
Converter &operator=(const Converter &) = delete;
|
|
Converter &operator=(Converter &&) = delete;
|
|
~Converter() {
|
|
Close();
|
|
}
|
|
operator bool() const noexcept {
|
|
return Succeeded();
|
|
}
|
|
void Open(const char *charSetDestination, const char *charSetSource, bool transliterations) {
|
|
Close();
|
|
if (*charSetSource) {
|
|
// Try allowing approximate transliterations
|
|
if (transliterations) {
|
|
std::string fullDest(charSetDestination);
|
|
fullDest.append("//TRANSLIT");
|
|
OpenHandle(fullDest.c_str(), charSetSource);
|
|
}
|
|
if (!Succeeded()) {
|
|
// Transliterations failed so try basic name
|
|
OpenHandle(charSetDestination, charSetSource);
|
|
}
|
|
}
|
|
}
|
|
void Close() noexcept {
|
|
if (Succeeded()) {
|
|
g_iconv_close(iconvh);
|
|
iconvh = iconvhBad;
|
|
}
|
|
}
|
|
gsize Convert(char **src, gsize *srcleft, char **dst, gsize *dstleft) const noexcept {
|
|
if (!Succeeded()) {
|
|
return sizeFailure;
|
|
} else {
|
|
return g_iconv(iconvh, src, srcleft, dst, dstleft);
|
|
}
|
|
}
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|