src/Fl_Browser_load.cxx

   1 //
   2 // "$Id: Fl_Browser_load.cxx 7903 2010-11-28 21:06:39Z matt $"
   3 //
   4 // File loading routines for the Fast Light Tool Kit (FLTK).
   5 //
   6 // Copyright 1998-2010 by Bill Spitzak and others.
   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 on the following page:
  24 //
  25 //     http://www.fltk.org/str.php
  26 //
  27
  28 #include <FL/Fl.H>
  29 #include <FL/Fl_Browser.H>
  30 #include <stdio.h>
  31 #include <FL/fl_utf8.h>
  32
  33 /**
  34   Clears the browser and reads the file, adding each line from the file
  35   to the browser.  If the filename is NULL or a zero-length
  36   string then this just clears the browser.  This returns zero if there
  37   was any error in opening or reading the file, in which case errno
  38   is set to the system error.  The data() of each line is set
  39   to NULL.
  40   \param[in] filename The filename to load
  41   \returns 1 if OK, 0 on error (errno has reason)
  42   \see add()
  43 */
  44 int Fl_Browser::load(const char *filename) {
  45 #define MAXFL_BLINE 1024
  46     char newtext[MAXFL_BLINE];
  47     int c;
  48     int i;
  49     clear();
  50     if (!filename || !(filename[0])) return 1;
  51     FILE *fl = fl_fopen(filename,"r");
  52     if (!fl) return 0;
  53     i = 0;
  54     do {
  55         c = getc(fl);
  56         if (c == '\n' || c <= 0 || i>=(MAXFL_BLINE-1)) {
  57             newtext[i] = 0;
  58             add(newtext);
  59             i = 0;
  60         } else {
  61             newtext[i++] = c;
  62         }
  63     } while (c >= 0);
  64     fclose(fl);
  65     return 1;
  66 }
  67
  68 //
  69 // End of "$Id: Fl_Browser_load.cxx 7903 2010-11-28 21:06:39Z matt $".
  70 //