9e5eddfc3d
This commit alters XRANDR (X Resize And Rotate) extension dependency, which is expected to have at least version 1.4. Earlier old versions of xrandr were supported, at least to some extent.
380 lines
9 KiB
C++
380 lines
9 KiB
C++
// FbString.cc for fluxbox
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// Copyright (c) 2006 Henrik Kinnunen (fluxgen at fluxbox dot org)
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// Copyright (c) 2006 Simon Bowden (rathnor at fluxbox dot org)
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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#include "FbString.hh"
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#ifdef HAVE_CERRNO
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#include <cerrno>
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#else
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#include <errno.h>
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#endif
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#ifdef HAVE_CSTRING
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#include <cstring>
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#else
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#include <string.h>
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#endif
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#ifdef HAVE_CSTDLIB
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#include <cstdlib>
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#else
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#include <stdlib.h>
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#endif
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#ifdef HAVE_CSTDIO
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#include <cstdio>
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#else
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#include <stdio.h>
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#endif
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#include <langinfo.h>
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#include <locale.h>
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#include <iostream>
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#include <vector>
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#ifndef HAVE_ICONV
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typedef int iconv_t;
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#endif // HAVE_ICONV
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#ifdef HAVE_FRIBIDI
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#include <fribidi.h>
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#endif
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#ifdef DEBUG
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using std::cerr;
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using std::endl;
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#endif // DEBUG
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namespace {
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const iconv_t ICONV_NULL = (iconv_t)(-1);
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#ifdef HAVE_FRIBIDI
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FbTk::FbString makeVisualFromLogical(const FbTk::FbString& src) {
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FriBidiCharType base = FRIBIDI_TYPE_N;
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// reuse allocated memory for reencoding / reordering
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static std::vector<FriBidiChar> us;
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static std::vector<FriBidiChar> out_us;
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static FbTk::FbString result;
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const size_t S = src.size() + 1;
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const size_t S4 = S * 4;
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if (us.capacity() < S)
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us.reserve(S);
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if (out_us.capacity() < S)
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out_us.reserve(S);
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if (result.capacity() < S4)
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result.reserve(S4);
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us.resize(S);
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FriBidiStrIndex len = fribidi_charset_to_unicode(FRIBIDI_CHAR_SET_UTF8,
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const_cast<char*>(src.c_str()), S - 1,
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&us[0]);
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out_us.resize(S);
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fribidi_log2vis(&us[0], len, &base, &out_us[0], NULL, NULL, NULL);
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result.resize(S4);
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len = fribidi_unicode_to_charset(FRIBIDI_CHAR_SET_UTF8, &out_us[0], len, &result[0]);
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result.resize(len); // trim to currently used chars
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return result;
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}
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#endif
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} // end of anonymous namespace
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namespace FbTk {
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BiDiString::BiDiString(const FbString& logical)
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#ifdef HAVE_FRIBIDI
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: m_visual_dirty(false)
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#endif
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{
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if (!logical.empty())
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setLogical(logical);
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}
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const FbString& BiDiString::setLogical(const FbString& logical) {
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m_logical = logical;
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#if HAVE_FRIBIDI
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if (m_logical.empty()) {
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m_visual_dirty = false;
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m_visual.clear();
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} else {
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m_visual_dirty = true;
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}
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#endif
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return m_logical;
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}
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const FbString& BiDiString::visual() const {
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#if HAVE_FRIBIDI
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if (m_visual_dirty) {
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m_visual = ::makeVisualFromLogical(logical());
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}
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m_visual_dirty = false;
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return m_visual;
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#else
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return m_logical;
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#endif
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}
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namespace FbStringUtil {
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enum ConvType {
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FB2X = 0,
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X2FB,
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LOCALE2FB,
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FB2LOCALE,
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CONVSIZE
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};
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static bool s_inited = false;
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static iconv_t s_iconv_convs[CONVSIZE];
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static std::string s_locale_codeset;
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/// Initialise all of the iconv conversion descriptors
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void init() {
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if (s_inited)
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return;
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s_inited = true;
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setlocale(LC_CTYPE, "");
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#ifdef HAVE_ICONV
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#if defined(CODESET) && !defined(_WIN32)
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s_locale_codeset = nl_langinfo(CODESET);
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#else // openbsd doesnt have this (yet?)
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std::string locale = setlocale(LC_CTYPE, NULL);
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size_t pos = locale.find('.');
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if (pos != std::string::npos)
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s_locale_codeset = locale.substr(pos+1);
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#endif // CODESET
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#ifdef DEBUG
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cerr << "FbTk::FbString: setup converts for local codeset = " << s_locale_codeset << endl;
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#endif // DEBUG
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s_iconv_convs[FB2X] = iconv_open("ISO8859-1", "UTF-8");
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s_iconv_convs[X2FB] = iconv_open("UTF-8", "ISO8859-1");
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s_iconv_convs[FB2LOCALE] = iconv_open(s_locale_codeset.c_str(), "UTF-8");
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s_iconv_convs[LOCALE2FB] = iconv_open("UTF-8", s_locale_codeset.c_str());
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#else
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memset(s_iconv_convs, 0, sizeof(s_iconv_convs));
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#endif // HAVE_ICONV
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}
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void shutdown() {
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#ifdef HAVE_ICONV
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int i;
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for (i = 0; i < CONVSIZE; ++i)
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if (s_iconv_convs[i] != ICONV_NULL)
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iconv_close(s_iconv_convs[i]);
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memset(s_iconv_convs, 0, sizeof(s_iconv_convs));
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s_inited = false;
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#endif // HAVE_ICONV
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}
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/**
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Recodes the text from one encoding to another
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assuming cd is correct
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@param cd the iconv type
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@param msg text to be converted, **NOT** necessarily NULL terminated
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@param size number of BYTES to convert
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@return the recoded string, or 0 on failure
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*/
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std::string recode(iconv_t cd, const std::string &in) {
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#ifdef HAVE_ICONV
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/**
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--NOTE--
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In the "C" locale, this will strip any high-bit characters
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because C means 7-bit ASCII charset. If you don't want this
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then you need to set your locale to something UTF-8, OR something
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ISO8859-1.
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*/
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// If empty message, yes this can happen, return
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if (in.empty())
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return "";
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if (cd == ICONV_NULL)
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return in; // can't convert
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size_t insize = in.size();
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size_t outsize = insize;
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std::vector<char> out(outsize);
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char* out_ptr = &out[0];
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size_t inbytesleft = insize;
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size_t outbytesleft = outsize;
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#ifdef HAVE_CONST_ICONV
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const char* in_ptr = in.data();
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#else
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char* in_ptr = const_cast<char*>(in.data());
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#endif
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size_t result = (size_t)(-1);
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bool again = true;
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while (again) {
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again = false;
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result = iconv(cd, &in_ptr, &inbytesleft, &out_ptr, &outbytesleft);
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if (result == (size_t)(-1)) {
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switch(errno) {
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case EILSEQ:
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// Try skipping a byte
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in_ptr++;
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inbytesleft--;
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again = true;
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case EINVAL:
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break;
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case E2BIG:
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// need more space!
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outsize += insize;
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out.resize(outsize);
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if (out.capacity() != outsize)
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again = true;
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outbytesleft += insize;
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out_ptr = (&out[0] + outsize) - outbytesleft;
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break;
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default:
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// something else broke
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perror("iconv");
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break;
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}
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}
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}
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// copy to our return string
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std::string ret;
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ret.append(&out[0], outsize - outbytesleft);
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// reset the conversion descriptor
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iconv(cd, NULL, NULL, NULL, NULL);
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return ret;
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#else
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return in;
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#endif // HAVE_ICONV
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}
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FbString XStrToFb(const std::string &src) {
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return recode(s_iconv_convs[X2FB], src);
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}
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std::string FbStrToX(const FbString &src) {
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return recode(s_iconv_convs[FB2X], src);
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}
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/// Handle thislocale string encodings (strings coming from userspace)
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FbString LocaleStrToFb(const std::string &src) {
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return recode(s_iconv_convs[LOCALE2FB], src);
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}
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std::string FbStrToLocale(const FbString &src) {
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return recode(s_iconv_convs[FB2LOCALE], src);
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}
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bool haveUTF8() {
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#ifdef HAVE_ICONV
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if (s_iconv_convs[LOCALE2FB] != ICONV_NULL)
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return true;
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#endif // HAVE_ICONV
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return false;
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}
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} // end namespace StringUtil
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#ifdef HAVE_ICONV
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StringConvertor::StringConvertor(EncodingTarget target) : m_iconv(ICONV_NULL) {
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if (target == ToLocaleStr)
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m_destencoding = FbStringUtil::s_locale_codeset;
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else
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m_destencoding = "UTF-8";
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}
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#else
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StringConvertor::StringConvertor(EncodingTarget target) { }
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#endif
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StringConvertor::~StringConvertor() {
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reset();
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}
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bool StringConvertor::setSource(const std::string &encoding) {
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#ifdef HAVE_ICONV
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std::string tempenc = encoding.empty() ? FbStringUtil::s_locale_codeset : encoding;
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if ((tempenc == m_destencoding) && (m_iconv == ICONV_NULL)) {
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return true;
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}
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iconv_t newiconv = iconv_open(m_destencoding.c_str(), tempenc.c_str());
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if (newiconv == ICONV_NULL)
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return false;
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else {
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if (m_iconv != ICONV_NULL)
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iconv_close(m_iconv);
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m_iconv = newiconv;
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return true;
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}
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#else
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return false;
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#endif
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}
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FbString StringConvertor::recode(const std::string &src) {
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#ifdef HAVE_ICONV
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return FbStringUtil::recode(m_iconv, src);
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#else
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return src;
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#endif
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}
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void StringConvertor::reset() {
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#ifdef HAVE_ICONV
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if (m_iconv != ICONV_NULL)
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iconv_close(m_iconv);
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m_iconv = ICONV_NULL;
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#endif
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}
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} // end namespace FbTk
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