xapian-applications/omega/commonhelp.cc

   1 /** @file
   2  * @brief handle command line help common to omindex and scriptindex
   3  */
   4 /* Copyright (C) 2005,2006,2008,2009,2010,2013 Olly Betts
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
  19  * USA
  20  */
  21
  22 #include <config.h>
  23
  24 #include "commonhelp.h"
  25
  26 #include <xapian.h>
  27
  28 #include <cstring>
  29 #include <iostream>
  30 #include <string>
  31
  32 using namespace std;
  33
  34 void print_package_info(const char *name) {
  35     cout << name << " - " PACKAGE_STRING << endl;
  36 }
  37
  38 void print_stemmer_help(const char * spaces) {
  39     cout << "  -s, --stemmer=LANG  " << spaces << "set the stemming language (default: english).\n";
  40     string wrap = "Possible values: " + Xapian::Stem::get_available_languages();
  41     wrap += " (pass 'none' to disable stemming)";
  42     const size_t WRAP_AT = 79 - 22 - strlen(spaces);
  43     while (wrap.size() > WRAP_AT) {
  44         size_t i;
  45         for (i = WRAP_AT; i > 0 && wrap[i] != ' '; --i) { }
  46         if (i == 0) break;
  47         cout << string(22, ' ') << spaces << wrap.substr(0, i) << "\n";
  48         wrap.erase(0, i + 1);
  49     }
  50     cout << string(22, ' ') << spaces << wrap << endl;
  51 }
  52
  53 void print_help_and_version_help(const char * spaces) {
  54     cout << "  -h, --help          " << spaces << "display this help and exit\n"
  55             "  -V, --version       " << spaces << "output version information and exit\n"
  56             "\n"
  57             "Please report bugs at:\n"
  58             PACKAGE_BUGREPORT << endl;
  59 }