src/options.cpp

   1 /*
   2  *  Copyright (C) 2007 Thiago Macieira <thiago@kde.org>
   3  *
   4  *  This program is free software: you can redistribute it and/or modify
   5  *  it under the terms of the GNU General Public License as published by
   6  *  the Free Software Foundation, either version 2 of the License, or
   7  *  (at your option) any later version.
   8  *
   9  *  This program is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *  GNU General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU General Public License
  15  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include "options.h"
  19
  20 #include <QSet>
  21 #include <QStringList>
  22
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25
  26 Options* Options::globalOptions = 0;
  27
  28 Options::Options()
  29 {
  30     globalOptions = this;
  31 }
  32
  33 Options::~Options()
  34 {
  35 }
  36
  37 void Options::showHelp()
  38 {
  39     printf("Usage: svn-all-fast-export configfile path-to-svn\n");
  40 }
  41
  42 void Options::parseArguments(const QStringList &argumentList)
  43 {
  44     QSet<QString> validOptions;
  45     validOptions << "help" << "metadata";
  46
  47     QSet<QString> validOptionsWithComplement;
  48     validOptionsWithComplement << "resume-from" << "max-rev" << "identity-map";
  49
  50     QStringList arguments = argumentList;
  51     arguments.takeFirst();           // the first one is the executable name; drop it
  52     while (!arguments.isEmpty()) {
  53         QString arg = arguments.takeFirst();
  54         QString complement;
  55
  56         if (arg == "--")
  57             break;
  58
  59         if (arg.startsWith("--"))
  60             arg = arg.mid(1);   // drop double dashes to single
  61
  62         if (arg.startsWith("-no-")) {
  63             complement = "no";
  64             arg = arg.mid(4);
  65         } else if (!arg.startsWith("-")) {
  66             // non-option arg
  67             arguments.prepend(arg);
  68             break;
  69         } else { // starts with "-"
  70             arg = arg.mid(1);
  71         }
  72
  73         if (arg.contains('=') && complement.isEmpty()) {
  74             int pos = arg.indexOf('=');
  75             complement = arg.mid(pos + 1);
  76             arg.truncate(pos);
  77         }
  78
  79         if (validOptionsWithComplement.contains(arg)) {
  80             if (arguments.isEmpty()) {
  81                 fprintf(stderr, "Option -%s requires an argument\n", qPrintable(arg));
  82                 exit(2);
  83             }
  84
  85             if (options.contains(arg)) {
  86                 fprintf(stderr, "Option -%s given more than once\n", qPrintable(arg));
  87                 exit(2);
  88             }
  89
  90             if (!complement.isEmpty())
  91                 options[arg] = complement;
  92             else if (!arguments.isEmpty())
  93                 options[arg] = arguments.takeFirst();
  94             else {
  95                 fprintf(stderr, "Option -%s requires an argument\n", qPrintable(arg));
  96                 exit(2);
  97             }
  98             continue;
  99         } else if (validOptions.contains(arg)) {
 100             if (switches.contains(arg)) {
 101                 fprintf(stderr, "Option -%s given more than once\n", qPrintable(arg));
 102                 exit(2);
 103             }
 104
 105             switches[arg] = !(complement == "no");
 106         } else {
 107             if (complement == "no")
 108                 fprintf(stderr, "Invalid option: -no-%s\n", qPrintable(arg));
 109             else
 110                 fprintf(stderr, "Invalid option: -%s\n", qPrintable(arg));
 111             exit(2);
 112         }
 113     }
 114
 115     if (switches.value("help")) {
 116         showHelp();
 117         exit(0);
 118     } else if (arguments.count() < 2) {
 119         showHelp();
 120         exit(2);
 121     }
 122
 123     ruleFile = arguments.takeFirst();
 124     pathToRepository = arguments.takeFirst();
 125 }