mirror of https://github.com/odrling/Aegisub
Conditionally const_cast source pointers passed to iconv to avoid invalid cast warnings
Originally committed to SVN as r4449.
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aa895f9a26
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@ -30,6 +30,12 @@
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#define ICONV_POSIX
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#endif
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#ifdef AGI_ICONV_CONST
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#define ICONV_CONST_CAST(a) a
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#else
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#define ICONV_CONST_CAST(a) const_cast<char **>(a)
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#endif
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static const iconv_t iconv_invalid = (iconv_t)-1;
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static const size_t iconv_failed = (size_t)-1;
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@ -66,8 +72,8 @@ namespace agi {
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class IconvWrapper::Converter {
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public:
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Converter(bool, const char*) { }
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size_t operator()(iconv_t cd, char** inbuf, size_t* inbytesleft, char** outbuf, size_t* outbytesleft) {
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return iconv(cd, inbuf, inbytesleft, outbuf, outbytesleft);
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size_t operator()(iconv_t cd, const char** inbuf, size_t* inbytesleft, char** outbuf, size_t* outbytesleft) {
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return iconv(cd, inbuf, ICONV_CONST_CAST(inbytesleft), outbuf, outbytesleft);
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}
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};
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#else
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@ -102,23 +108,23 @@ public:
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uc_to_mb_fallback = fallback;
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wc_to_mb_fallback = NULL;
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char sbuff[] = "?";
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char* src = sbuff;
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char* dst = invalidRep;
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size_t dstLen = 4;
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size_t srcLen = 1;
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char sbuff[] = "?";
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const char* src = sbuff;
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char* dst = invalidRep;
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size_t dstLen = 4;
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size_t srcLen = 1;
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iconv_t cd = iconv_open(GetRealEncodingName(targetEnc), "UTF-8");
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assert(cd != iconv_invalid);
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size_t res = iconv(cd, &src, &srcLen, &dst, &dstLen);
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size_t res = iconv(cd, ICONV_CONST_CAST(&src), &srcLen, &dst, &dstLen);
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assert(res != iconv_failed);
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assert(srcLen == 0);
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iconv_close(cd);
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invalidRepSize = 4 - dstLen;
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}
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size_t operator()(iconv_t cd, char** inbuf, size_t* inbytesleft, char** outbuf, size_t* outbytesleft) {
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size_t res = iconv(cd, inbuf, inbytesleft, outbuf, outbytesleft);
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size_t operator()(iconv_t cd, const char** inbuf, size_t* inbytesleft, char** outbuf, size_t* outbytesleft) {
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size_t res = iconv(cd, ICONV_CONST_CAST(inbuf), inbytesleft, outbuf, outbytesleft);
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if (!subst) return res;
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@ -130,7 +136,7 @@ public:
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// first try transliteration only
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int transliterate = 1;
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iconvctl(cd, ICONV_SET_TRANSLITERATE, &transliterate);
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res = iconv(cd, inbuf, inbytesleft, outbuf, outbytesleft);
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res = iconv(cd, ICONV_CONST_CAST(inbuf), inbytesleft, outbuf, outbytesleft);
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err = errno;
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transliterate = 0;
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iconvctl(cd, ICONV_SET_TRANSLITERATE, &transliterate);
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@ -138,7 +144,7 @@ public:
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if (res == iconv_failed && err == EILSEQ) {
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// Conversion still failed with transliteration enabled, so try our substitution
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iconvctl(cd, ICONV_SET_FALLBACKS, this);
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res = iconv(cd, inbuf, inbytesleft, outbuf, outbytesleft);
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res = iconv(cd, ICONV_CONST_CAST(inbuf), inbytesleft, outbuf, outbytesleft);
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err = errno;
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iconvctl(cd, ICONV_SET_FALLBACKS, NULL);
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}
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@ -147,11 +153,11 @@ public:
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char buff[4];
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size_t buffsize = 4;
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char* out = buff;
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char* in = *inbuf;
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const char* in = *inbuf;
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size_t insize = *inbytesleft;
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iconvctl(cd, ICONV_SET_FALLBACKS, this);
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res = iconv(cd, &in, &insize, &out, &buffsize);
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res = iconv(cd, ICONV_CONST_CAST(&in), &insize, &out, &buffsize);
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// If no bytes of the output buffer were used, the original
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// conversion may have been successful
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if (buffsize == 4) {
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@ -179,11 +185,11 @@ static size_t NulSize(const char* encoding) {
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char dbuff[4];
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char sbuff[] = "";
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char* dst = dbuff;
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char* src = sbuff;
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const char* src = sbuff;
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size_t dstLen = sizeof(dbuff);
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size_t srcLen = 1;
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size_t ret = iconv(cd, &src, &srcLen, &dst, &dstLen);
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size_t ret = iconv(cd, ICONV_CONST_CAST(&src), &srcLen, &dst, &dstLen);
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assert(ret != iconv_failed);
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assert(dst - dbuff > 0);
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iconv_close(cd);
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@ -232,8 +238,7 @@ size_t IconvWrapper::Convert(const char* source, size_t sourceSize, char *dest,
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if (sourceSize == (size_t)-1) {
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sourceSize = SrcStrLen(source);
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}
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// POSIX requires that inbuf be const char **, but libiconv uses char**
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size_t res = (*conv)(cd, const_cast<char **>(&source), &sourceSize, &dest, &destSize);
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size_t res = (*conv)(cd, &source, &sourceSize, &dest, &destSize);
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if (res == iconv_failed) {
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switch (errno) {
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@ -260,7 +265,7 @@ size_t IconvWrapper::Convert(const char* source, size_t sourceSize, char *dest,
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}
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size_t IconvWrapper::Convert(const char** source, size_t* sourceSize, char** dest, size_t* destSize) {
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return (*conv)(cd, const_cast<char **>(source), sourceSize, dest, destSize);
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return (*conv)(cd, source, sourceSize, dest, destSize);
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}
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size_t IconvWrapper::RequiredBufferSize(std::string const& str) {
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@ -275,7 +280,7 @@ size_t IconvWrapper::RequiredBufferSize(const char* src, size_t srcLen) {
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do {
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char* dst = buff;
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size_t dstSize = sizeof(buff);
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res = (*conv)(cd, const_cast<char **>(&src), &srcLen, &dst, &dstSize);
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res = (*conv)(cd, &src, &srcLen, &dst, &dstSize);
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charsWritten += dst - buff;
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} while (res == iconv_failed && errno == E2BIG);
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