cpputools/source/sp2bv/sp2bv.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22 #include <osl/thread.h>
  23 #include <osl/file.h>
  24 #include <rtl/ustring.hxx>
  25 #include <rtl/ustrbuf.h>
  26
  27 static bool hasOption(char const * szOption, int argc, char** argv);
  28
  29
  30 #define HELP_TEXT    \
  31 "SYNOPSIS \n\n" \
  32 "\tsp2bv [-h] [-?] string \n\n" \
  33 "DESCRIPTION\n\n" \
  34 "\tsp2bv stands for \"system path to bootstrap variable\"." \
  35 " First the system path is converted into a file URL. Then all " \
  36 "characters which have a special meaning in bootstrap variables, " \
  37 "such as \'$\' are escaped. The resulting string is written to " \
  38 "stdout and can be assigned to a bootstrap variable.\n" \
  39 "\n\n" \
  40 "OPTIONS \n\n" \
  41 "\tThe following options are supported: \n" \
  42 "-?\n " \
  43 "--help" \
  44 "    Display help information.\n"
  45
  46
  47 int main(int argc, char **argv)
  48 {
  49     if( hasOption("--help",argc, argv) || hasOption("-h", argc, argv))
  50     {
  51         fprintf(stdout, HELP_TEXT);// default
  52         return 0;
  53     }
  54
  55     if (argc != 2)
  56     {
  57         fprintf(stdout, HELP_TEXT);
  58         return -1;
  59     }
  60
  61     rtl_uString* pPath = nullptr;
  62     rtl_string2UString( &pPath, argv[1], strlen(argv[1]),
  63                         osl_getThreadTextEncoding(),OSTRING_TO_OUSTRING_CVTFLAGS );
  64
  65     rtl_uString* pUrl = nullptr;
  66     if (osl_getFileURLFromSystemPath(pPath, &pUrl) != osl_File_E_None)
  67         return -1;
  68 //escape the special characters
  69
  70     sal_Unicode cEscapeChar = 0x5c;
  71     rtl_uString* pBuffer = nullptr;
  72     sal_Int32 nCapacity = 255;
  73     rtl_uString_new_WithLength( &pBuffer, nCapacity );
  74
  75     const sal_Unicode* pCur = pUrl->buffer;
  76     for (int i = 0; i != pUrl->length; i++)
  77     {
  78         switch( *pCur)
  79         {
  80         case '$':
  81             rtl_uStringbuffer_insert( &pBuffer, &nCapacity, pBuffer->length, &cEscapeChar, 1);
  82             rtl_uStringbuffer_insert( &pBuffer, &nCapacity, pBuffer->length, pCur, 1);
  83             break;
  84         case '{':
  85         case '}':
  86         case '\\': fprintf(stderr, "sp2vb: file URL contains invalid characters!\n");
  87             return -1;
  88         default:
  89             rtl_uStringbuffer_insert( &pBuffer, &nCapacity, pBuffer->length, pCur, 1);
  90         }
  91         pCur ++;
  92     }
  93 //convert back to byte string so that we can print it.
  94     rtl_String* pBootVar = nullptr;
  95     rtl_uString2String( &pBootVar, pBuffer->buffer, pBuffer->length,
  96                         osl_getThreadTextEncoding(), OUSTRING_TO_OSTRING_CVTFLAGS);
  97
  98     fprintf(stdout, "%s", pBootVar->buffer);
  99     fflush(stdout);
 100
 101     rtl_uString_release(pBuffer);
 102     rtl_uString_release(pPath);
 103     rtl_uString_release(pUrl);
 104     rtl_string_release(pBootVar);
 105     return 0;
 106 }
 107
 108
 109 static bool hasOption(char const * szOption, int argc, char** argv)
 110 {
 111     bool retVal = false;
 112     for(int i= 1; i < argc; i++)
 113     {
 114         if( ! strcmp(argv[i], szOption))
 115         {
 116             retVal = true;
 117             break;
 118         }
 119     }
 120     return retVal;
 121 }
 122
 123
 124 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */