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] [-l] [-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 "  -l        prevent <LF> -> <CR><LF> processing. By default, standalone"
  59 "            <LF> characters are converted to <CR><LF>."
  60 "  -P device spools to the specified device.\n"
  61 "\n"
  62 "Notes:\n"
  63 "\n"
  64 "-d and -P are aliases of each other and perform the same function.\n"
  65 "Device names may take the form of DOS devices (e.g., lpt1:) if the printer\n"
  66 "is connected locally. Network printers can be accessed using the form\n"
  67 "'\\\\server\\printer_name'. Forward slashes can be used as well, e.g.,\n"
  68 "'//server/printer_name'.\n"
  69 "\n"
  70 "The environment variable PRINTER can be used to set the default printer\n"
  71 "device.\n";
  72
  73 void usage(const string & msg = "")
  74 {
  75   if (msg != "")
  76     cerr << progName << ": " << msg << endl << endl;
  77
  78   cerr << "Usage: " << progName << usageMessage;
  79   exit(1);
  80 }
  81
  82 int main(int argc, char *argv[])
  83 {
  84   progName = getProgramName(argv[0]);
  85   string printerName = "";
  86
  87   // Is the printer specified in the environment?
  88   const char *p = getenv("PRINTER");
  89   if (p != 0)
  90     printerName = p;
  91
  92   bool debugFlag = false;
  93   bool rawFlag = false;
  94
  95   int optionChar;
  96   while ((optionChar = getopt(argc, argv, ":Dd:hlP:")) != EOF)
  97   {
  98     switch (optionChar)
  99     {
 100     case 'h':
 101       // accept for compatibility
 102       break;
 103     case 'D':
 104       debugFlag = true;
 105       break;
 106     case 'd':
 107     case 'P':
 108       printerName = optarg;
 109       break;
 110     case 'l':
 111       rawFlag = true;
 112       break;
 113     default:
 114       usage(string("unknown option: -") + char(optionChar));
 115     }
 116   }
 117
 118   // Can't proceed without a printer name.
 119   if (printerName == "")
 120   {
 121     cerr << progName << ": no printer specified" << endl;
 122     return 1;
 123   }
 124
 125   char winPrinter[MAX_PATH];
 126   cygwin_conv_to_win32_path(printerName.c_str(), winPrinter);
 127   if (debugFlag)
 128     cout << "Windows printer name = '" << winPrinter << "'" << endl;
 129
 130   try
 131   {
 132     Printer pr(winPrinter, debugFlag);
 133     pr.setRawFlag(rawFlag);
 134
 135     if (optind >= argc)
 136       pr.print(cin, "stdin");
 137     else
 138     {
 139       for (int ii = optind; ii < argc; ++ii)
 140       {
 141         ifstream in (argv[ii]);
 142         if (!in)
 143           cerr << progName << ": can't open '" << argv[ii] << "' for input."
 144                << endl;
 145         else
 146           pr.print(in, argv[ii]);
 147       }
 148     }
 149     pr.close();
 150   }
 151   catch (const PrinterException & ex)
 152   {
 153     cerr << progName << ": printer error: " << ex << endl;
 154     return 1;
 155   }
 156
 157   return 0;
 158 }