src/apps/icon-o-matic/import_export/svg/SVGImporter.cpp

   1 /*
   2  * Copyright 2006-2009, Haiku, Inc. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Stephan Aßmus <superstippi@gmx.de>
   7  */
   8
   9 #include "SVGImporter.h"
  10
  11 #include <strings.h>
  12
  13 #include <Alert.h>
  14 #include <Catalog.h>
  15 #include <Entry.h>
  16 #include <File.h>
  17 #include <Locale.h>
  18 #include <Path.h>
  19
  20 #include "DocumentBuilder.h"
  21 #include "SVGParser.h"
  22
  23
  24 #undef B_TRANSLATION_CONTEXT
  25 #define B_TRANSLATION_CONTEXT "Icon-O-Matic-SVGImport"
  26
  27
  28 // constructor
  29 SVGImporter::SVGImporter()
  30 {
  31 }
  32
  33 // destructor
  34 SVGImporter::~SVGImporter()
  35 {
  36 }
  37
  38 // Import
  39 status_t
  40 SVGImporter::Import(Icon* icon, const entry_ref* ref)
  41 {
  42         status_t ret = Init(icon);
  43         if (ret < B_OK) {
  44                 printf("SVGImporter::Import() - "
  45                            "Init() error: %s\n", strerror(ret));
  46                 return ret;
  47         }
  48
  49         BPath path(ref);
  50         ret = path.InitCheck();
  51         if (ret < B_OK)
  52                 return ret;
  53
  54         // peek into file to see if this could be an SVG file at all
  55         BFile file(path.Path(), B_READ_ONLY);
  56         ret = file.InitCheck();
  57         if (ret < B_OK)
  58                 return ret;
  59
  60         ssize_t size = 5;
  61         char buffer[size + 1];
  62         if (file.Read(buffer, size) != size)
  63                 return B_ERROR;
  64
  65         // 0 terminate
  66         buffer[size] = 0;
  67         if (strcasecmp(buffer, "<?xml") != 0) {
  68                 // we might be  stretching it a bit, but what the heck
  69                 return B_ERROR;
  70         }
  71
  72     try {
  73                 agg::svg::DocumentBuilder builder;
  74                 agg::svg::Parser parser(builder);
  75                 parser.parse(path.Path());
  76                 ret = builder.GetIcon(icon, this, ref->name);
  77         } catch(agg::svg::exception& e) {
  78                 char error[1024];
  79                 sprintf(error, B_TRANSLATE("Failed to open the file '%s' as "
  80                                            "an SVG document.\n\n"
  81                                            "Error: %s"), ref->name, e.msg());
  82                 BAlert* alert = new BAlert(B_TRANSLATE("load error"),
  83                                                                    error, B_TRANSLATE("OK"), NULL, NULL,
  84                                                                    B_WIDTH_AS_USUAL, B_WARNING_ALERT);
  85                 alert->SetFlags(alert->Flags() | B_CLOSE_ON_ESCAPE);
  86                 alert->Go(NULL);
  87                 ret = B_ERROR;
  88         }
  89
  90         return ret;
  91 }