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// FbString.cc for fluxbox
// Copyright (c) 2006 Henrik Kinnunen (fluxgen at fluxbox dot org)
// Copyright (c) 2006 Simon Bowden (rathnor at fluxbox dot org)
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
// $Id$
#ifdef HAVE_CERRNO
#include <cerrno>
#else
#include <errno.h>
#endif
#include "FbString.hh"
#include "config.h"
#ifdef HAVE_ICONV
#include <iconv.h>
#endif // HAVE_ICONV
#include <langinfo.h>
#include <locale.h>
#include <iostream>
using namespace std;
namespace FbTk {
namespace FbStringUtil {
enum ConvType { FB2X = 0, X2FB, LOCALE2FB, FB2LOCALE, CONVSIZE };
#ifdef HAVE_ICONV
static iconv_t *iconv_convs = 0;
#else
static int iconv_convs[CONVSIZE];
#endif // HAVE_ICONV
/// Initialise all of the iconv conversion descriptors
void init() {
static bool s_init = false;
if (s_init)
return;
s_init = true;
iconv_convs = new iconv_t[CONVSIZE];
setlocale(LC_CTYPE, "");
#ifdef HAVE_ICONV
#ifdef CODESET
std::string locale_codeset = nl_langinfo(CODESET);
#else // openbsd doesnt have this (yet?)
std::string locale_codeset = "";
std::string locale = setlocale(LC_CTYPE, NULL);
size_t pos = locale.find('.');
if (pos != std::string::npos)
locale_codeset = locale.substr(pos);
#endif // CODESET
#ifdef DEBUG
cerr<<"FbTk::FbString: setup converts for local codeset = "<<locale_codeset<<endl;
#endif // DEBUG
iconv_convs[FB2X] = iconv_open("ISO8859-1", "UTF-8");
iconv_convs[X2FB] = iconv_open("UTF-8", "ISO8859-1");
iconv_convs[FB2LOCALE] = iconv_open(locale_codeset.c_str(), "UTF-8");
iconv_convs[LOCALE2FB] = iconv_open("UTF-8", locale_codeset.c_str());
#else
for (int i=0; i < CONVSIZE; ++i)
iconv_convs[i] = 0;
#endif // HAVE_ICONV
}
void shutdown() {
#ifdef HAVE_ICONV
for (int i=0; i < CONVSIZE; ++i)
if (iconv_convs[i] != (iconv_t)(-1))
iconv_close(iconv_convs[i]);
#endif // HAVE_ICONV
delete[] iconv_convs;
}
#ifdef HAVE_ICONV
/**
Recodes the text from one encoding to another
assuming cd is correct
@param cd the iconv type
@param msg text to be converted, **NOT** necessarily NULL terminated
@param size number of BYTES to convert
@return the recoded string, or 0 on failure
*/
/**
--NOTE--
In the "C" locale, this will strip any high-bit characters
because C means 7-bit ASCII charset. If you don't want this
then you need to set your locale to something UTF-8, OR something
ISO8859-1.
*/
std::string recode(iconv_t cd,
const std::string &in) {
// If empty message, yes this can happen, return
if (in.empty())
return "";
size_t insize = in.size();
size_t outsize = insize;
char * out = (char *) malloc(outsize * sizeof(char)); // need realloc
char * outptr = out;
size_t inbytesleft = insize;
size_t outbytesleft = outsize;
char * in_ptr = const_cast<char *>(in.data());
size_t result = (size_t)(-1);
bool again = true;
while (again) {
again = false;
result = iconv(cd, &in_ptr, &inbytesleft, &outptr, &outbytesleft);
if (result == (size_t)(-1)) {
switch(errno) {
case EILSEQ:
// Try skipping a byte
in_ptr++;
inbytesleft--;
again = true;
case EINVAL:
break;
case E2BIG:
// need more space!
outsize += insize;
out = (char *) realloc(out, outsize*sizeof(char));
if (out != NULL)
again = true;
outbytesleft += insize;
outptr = out + outsize - outbytesleft;
break;
default:
// something else broke
perror("iconv");
break;
}
}
}
// copy to our return string
std::string ret;
ret.append(out, outsize - outbytesleft);
// reset the conversion descriptor
iconv(cd, NULL, NULL, NULL, NULL);
if (out)
free(out);
return ret;
}
#else
std::string recode(int cd,
const std::string &str) {
return str;
}
#endif // HAVE_ICONV
FbString XStrToFb(const std::string &src) {
return recode(iconv_convs[X2FB], src);
}
std::string FbStrToX(const FbString &src) {
return recode(iconv_convs[FB2X], src);
}
/// Handle thislocale string encodings (strings coming from userspace)
FbString LocaleStrToFb(const std::string &src) {
return recode(iconv_convs[LOCALE2FB], src);
}
std::string FbStrToLocale(const FbString &src) {
return recode(iconv_convs[FB2LOCALE], src);
}
bool haveUTF8() {
#ifdef HAVE_ICONV
if (iconv_convs[LOCALE2FB] != ((iconv_t)(-1)))
return true;
#endif // HAVE_ICONV
return false;
}
}; // end namespace StringUtil
}; // end namespace FbTk
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