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