forked from mia/Aegisub
3c18ed542c
Consistently use the C++ names for headers rather than a combination of the C and C++ names. Remove empty LAGI_PRE blocks. Remove checks for both AGI_PRE and LAGI_PRE and change a check for only AGI_PRE to LAGI_PRE. Originally committed to SVN as r5516.
107 lines
4.2 KiB
C++
107 lines
4.2 KiB
C++
// Copyright (c) 2010, Thomas Goyne <plorkyeran@aegisub.org>
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//
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// Permission to use, copy, modify, and distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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//
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// $Id$
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/// @file charset_conv.h
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/// @brief Wrapper for libiconv to present a more C++-friendly API
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/// @ingroup libaegisub
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#pragma once
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#ifndef LAGI_PRE
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#include <cstring>
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#include <memory>
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#include <string>
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#include <vector>
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#endif
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#include <libaegisub/exception.h>
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namespace agi {
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namespace charset {
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DEFINE_BASE_EXCEPTION_NOINNER(ConvError, Exception)
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DEFINE_SIMPLE_EXCEPTION_NOINNER(UnsupportedConversion, ConvError, "iconv/unsupported")
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DEFINE_SIMPLE_EXCEPTION_NOINNER(ConversionFailure, ConvError, "iconv/failed")
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DEFINE_SIMPLE_EXCEPTION_NOINNER(BufferTooSmall, ConversionFailure, "iconv/failed/E2BIG")
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DEFINE_SIMPLE_EXCEPTION_NOINNER(BadInput, ConversionFailure, "iconv/failed/EILSEQ")
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DEFINE_SIMPLE_EXCEPTION_NOINNER(BadOutput, ConversionFailure, "iconv/failed/EINVAL")
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/// @brief Get a list of support encodings with user-friendly names
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template<class T>
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T const& GetEncodingsList() {
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static T nameList;
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if (nameList.empty()) {
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# define ADD(pretty, real) nameList.push_back(pretty)
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# include <libaegisub/charsets.def>
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# undef ADD
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}
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return nameList;
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}
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typedef void* iconv_t;
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// Helper class that abstracts away the differences betwen libiconv and
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// POSIX iconv implementations
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class Converter;
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/// @brief A C++ wrapper for iconv
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class IconvWrapper {
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size_t toNulLen;
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size_t fromNulLen;
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std::auto_ptr<Converter> conv;
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public:
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/// @brief Create a converter
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/// @param sourceEncoding Source encoding name, may be a pretty name
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/// @param destEncoding Destination encoding name, may be a pretty name
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/// @param enableSubst If true, when possible characters will be
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/// mutilated or dropped rather than a letting a
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/// conversion fail
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IconvWrapper(const char* sourceEncoding, const char* destEncoding, bool enableSubst = true);
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~IconvWrapper();
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/// @brief Convert a string from the source to destination charset
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/// @param source String to convert
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/// @return Converted string. Note that std::string always uses a single byte
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/// terminator, so c_str() may not return a valid string if the dest
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/// charset has wider terminators
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std::string Convert(std::string const& source);
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/// @brief Convert a string from the source to destination charset
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/// @param source String to convert
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/// @param[out] dest String to place the result in
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void Convert(std::string const& source, std::string &dest);
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size_t Convert(const char* source, size_t sourceSize, char* dest, size_t destSize);
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/// Bare wrapper around iconv; see iconv documention for details
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size_t Convert(const char **inbuf, size_t *inbytesleft, char **outbuf, size_t *outbytesleft);
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/// @brief Get the required buffer size required to fit the source string in the target charset
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/// @param source A string in the source charset
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/// @param sourceSize Length of the source in bytes
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/// @return Bytes required, including NUL terminator if applicable
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size_t RequiredBufferSize(const char* source, size_t sourceSize);
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/// @brief Get the required buffer size required to fit the source string in the target charset
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/// @param str A string in the source charset
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/// @return Bytes required, not including space needed for NUL terminator
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size_t RequiredBufferSize(std::string const& str);
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/// Encoding-aware strlen for strings encoding in the source charset
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size_t SrcStrLen(const char* str);
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/// Encoding-aware strlen for strings encoding in the destination charset
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size_t DstStrLen(const char* str);
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};
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}
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}
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