src/apps/deskcalc/DeskCalc.cpp

   1 /*
   2  * Copyright 2006 Haiku, Inc. All Rights Reserved.
   3  * Copyright 1997, 1998 R3 Software Ltd. All Rights Reserved.
   4  * Distributed under the terms of the MIT License.
   5  *
   6  * Authors:
   7  *              Timothy Wayper <timmy@wunderbear.com>
   8  *              Stephan Aßmus <superstippi@gmx.de>
   9  */
  10
  11
  12 #include <stdio.h>
  13
  14 #include "CalcApplication.h"
  15 #include "ExpressionParser.h"
  16
  17
  18 int
  19 main(int argc, char* argv[])
  20 {
  21         if (argc == 1) {
  22                 // run GUI
  23                 CalcApplication* app = new CalcApplication();
  24
  25                 app->Run();
  26                 delete app;
  27         } else {
  28                 // evaluate expression from command line
  29                 BString expression;
  30                 int32 i = 1;
  31                 while (i < argc) {
  32                         expression << argv[i];
  33                         i++;
  34                 }
  35
  36                 try {
  37                         ExpressionParser parser;
  38                         BString result = parser.Evaluate(expression.String());
  39                         printf("%s\n", result.String());
  40                 } catch (ParseException e) {
  41                         printf("%s at %" B_PRId32 "\n", e.message.String(), e.position + 1);
  42                         return 1;
  43                 }
  44         }
  45
  46         return 0;
  47 }