src/lpr/lpr.cc

   1 /*
   2  * lpr for cygwin/windows
   3  *
   4  * Copyright (C) 2000-2003 Rick Rankin
   5  * http://www.cygwin.com/ml/cygwin/2000-07/msg00320.html
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation in version 2 of the License.
  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #if HAVE_CONFIG_H
  22 #  include "config.h"
  23 #endif
  24 #include "common.h"
  25
  26 #include <fstream>
  27 #include <string>
  28
  29 #include <sys/cygwin.h>
  30
  31 #include "src/lpr/Printer.hh"
  32
  33 using namespace std;
  34
  35 string progName;
  36
  37 string getProgramName(const string & str)
  38 {
  39   string::size_type lastSlashPos = str.find_last_of("\\/");
  40   if (lastSlashPos == string::npos)
  41     lastSlashPos = 0;
  42   else
  43     ++lastSlashPos;
  44   string::size_type dotPos = str.find_last_of(".");
  45   if (dotPos == string::npos || dotPos < lastSlashPos)
  46     dotPos = str.length();
  47   return str.substr(lastSlashPos, dotPos - lastSlashPos);
  48 }
  49
  50 const char * usageMessage =
  51 " [-h] [-D] [-d device] [-P device]\n"
  52 "\n"
  53 "where:\n"
  54 "\n"
  55 "  -h        does nothing. Accepted for compatibility.\n"
  56 "  -d device spools to the specified device.\n"
  57 "  -D        enable debugging output.\n"
  58 "  -P device spools to the specified device.\n"
  59 "\n"
  60 "Notes:\n"
  61 "\n"
  62 "-d and -P are aliases of each other and perform the same function.\n"
  63 "Device names may take the form of DOS devices (e.g., lpt1:) if the printer\n"
  64 "is connected locally. Network printers can be accessed using the form\n"
  65 "'\\\\server\\printer_name'. Forward slashes can be used as well, e.g.,\n"
  66 "'//server/printer_name'.\n"
  67 "\n"
  68 "The environment variable PRINTER can be used to set the default printer\n"
  69 "device.\n";
  70
  71 void usage(const string & msg = "")
  72 {
  73   if (msg != "")
  74     cerr << progName << ": " << msg << endl << endl;
  75
  76   cerr << "Usage: " << progName << usageMessage;
  77   exit(1);
  78 }
  79
  80 int main(int argc, char *argv[])
  81 {
  82   progName = getProgramName(argv[0]);
  83   string printerName = "";
  84
  85   // Is the printer specified in the environment?
  86   const char *p = getenv("PRINTER");
  87   if (p != 0)
  88     printerName = p;
  89
  90   bool debugFlag = false;
  91
  92   int optionChar;
  93   while ((optionChar = getopt(argc, argv, ":hDd:P:")) != EOF)
  94   {
  95     switch (optionChar)
  96     {
  97     case 'h':
  98       // accept for compatibility
  99       break;
 100     case 'D':
 101       debugFlag = true;
 102       break;
 103     case 'd':
 104     case 'P':
 105       printerName = optarg;
 106       break;
 107     default:
 108       usage(string("unknown option: -") + char(optionChar));
 109     }
 110   }
 111
 112   // Can't proceed without a printer name.
 113   if (printerName == "")
 114   {
 115     cerr << progName << ": no printer specified" << endl;
 116     return 1;
 117   }
 118
 119   char winPrinter[MAX_PATH];
 120   cygwin_conv_to_win32_path(printerName.c_str(), winPrinter);
 121   if (debugFlag)
 122     cout << "Windows printer name = '" << winPrinter << "'" << endl;
 123
 124   try
 125   {
 126     Printer pr(winPrinter, debugFlag);
 127
 128     if (optind >= argc)
 129       pr.print(cin, "stdin");
 130     else
 131     {
 132       for (int ii = optind; ii < argc; ++ii)
 133       {
 134         ifstream in (argv[ii]);
 135         if (!in)
 136           cerr << progName << ": can't open '" << argv[ii] << "' for input."
 137                << endl;
 138         else
 139           pr.print(in, argv[ii]);
 140       }
 141     }
 142     pr.close();
 143   }
 144   catch (const PrinterException & ex)
 145   {
 146     cerr << progName << ": printer error: " << ex << endl;
 147     return 1;
 148   }
 149
 150   return 0;
 151 }