A src/FbTk/FbString.cc

@@ -0,0 +1,207 @@ 
+// 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() {
+    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
+*/
+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

A src/FbTk/FbString.hh

@@ -0,0 +1,62 @@ 
+// FbString.hh 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.
+
+//$Id$
+
+#ifndef FBTK_FBSTRING_HH
+#define FBTK_FBSTRING_HH
+
+#include <string>
+
+namespace FbTk {
+
+// Use this type for things converted to our internal encoding (UTF-8)
+// (or just plain whatever for now if no utf-8 available)
+typedef std::string FbString;
+
+namespace FbStringUtil {
+
+void init();
+void shutdown();
+
+/// Stuff to handle strings in different encodings
+/// Rule: Only hardcode-initialise FbStrings as ascii (7bit) characters
+
+// NOTE: X "STRING" types are defined (ICCCM) as ISO Latin-1 encoding
+FbString XStrToFb(const std::string &src);
+std::string FbStrToX(const FbString &src);
+
+/// Handle thislocale string encodings (strings coming from userspace)
+FbString LocaleStrToFb(const std::string &src);
+std::string FbStrToLocale(const FbString &src);
+
+// essentially NO-OP
+inline FbString UTF8StrToFb(const std::string &src) { return src; } 
+inline std::string FbStrToUTF8(const FbString &src) { return src; }
+
+bool haveUTF8();
+
+} // namespace FbStringUtil
+} // namespace FbTk
+
+#endif // FBTK_FBSTRING_HH
+