src/Fl_Native_File_Chooser_common.cxx

   1 // "$Id: Fl_Native_File_Chooser_common.cxx 7977 2010-12-08 13:16:27Z AlbrechtS $"
   2 //
   3 // FLTK native OS file chooser widget
   4 //
   5 // Copyright 1998-2010 by Bill Spitzak and others.
   6 // Copyright 2004 Greg Ercolano.
   7 //
   8 // This library is free software; you can redistribute it and/or
   9 // modify it under the terms of the GNU Library General Public
  10 // License as published by the Free Software Foundation; either
  11 // version 2 of the License, or (at your option) any later version.
  12 //
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 // Library General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU Library General Public
  19 // License along with this library; if not, write to the Free Software
  20 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  21 // USA.
  22 //
  23 // Please report all bugs and problems to:
  24 //
  25 //     http://www.fltk.org/str.php
  26 //
  27
  28 #include <string.h>
  29 #include <FL/Enumerations.H>
  30
  31 // COPY A STRING WITH 'new'
  32 //    Value can be NULL
  33 //
  34 static char *strnew(const char *val) {
  35   if ( val == NULL ) return(NULL);
  36   char *s = new char[strlen(val)+1];
  37   strcpy(s, val);
  38   return(s);
  39 }
  40
  41 // FREE STRING CREATED WITH strnew(), NULLS OUT STRING
  42 //    Value can be NULL
  43 //
  44 static char *strfree(char *val) {
  45   if ( val ) delete [] val;
  46   return(NULL);
  47 }
  48
  49 // 'DYNAMICALLY' APPEND ONE STRING TO ANOTHER
  50 //    Returns newly allocated string, or NULL
  51 //    if s && val == NULL.
  52 //    's' can be NULL; returns a strnew(val).
  53 //    'val' can be NULL; s is returned unmodified.
  54 //
  55 //    Usage:
  56 //      char *s = strnew("foo");        // s = "foo"
  57 //      s = strapp(s, "bar");           // s = "foobar"
  58 //
  59 #if !defined(WIN32)
  60 static char *strapp(char *s, const char *val) {
  61   if ( ! val ) {
  62     return(s);                  // Nothing to append? return s
  63   }
  64   if ( ! s ) {
  65     return(strnew(val));        // New string? return copy of val
  66   }
  67   char *news = new char[strlen(s)+strlen(val)+1];
  68   strcpy(news, s);
  69   strcat(news, val);
  70   delete [] s;                  // delete old string
  71   return(news);                 // return new copy
  72 }
  73 #endif
  74
  75 // APPEND A CHARACTER TO A STRING
  76 //     This does NOT allocate space for the new character.
  77 //
  78 static void chrcat(char *s, char c) {
  79   char tmp[2] = { c, '\0' };
  80   strcat(s, tmp);
  81 }
  82
  83 //
  84 // End of "$Id: Fl_Native_File_Chooser_common.cxx 7977 2010-12-08 13:16:27Z AlbrechtS $".
  85 //