1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
|
// Copyright 2008, Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// 3. Neither the name of Google Inc. nor the names of its contributors may be
// used to endorse or promote products derived from this software without
// specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
// EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// This example program that takes as its only argument a KML or KMZ file,
// then walks through all contained Features, computing the markup required
// to display the description balloon for each feature.
#include <iostream>
#include "boost/scoped_ptr.hpp"
#include "kml/base/file.h"
#include "kml/dom.h"
#include "kml/engine.h"
using kmldom::BalloonStylePtr;
using kmldom::DocumentPtr;
using kmldom::ElementPtr;
using kmldom::KmlFactory;
using kmldom::PlacemarkPtr;
using kmldom::SerializePretty;
using kmldom::SnippetPtr;
using kmldom::StylePtr;
using kmlengine::CreateBalloonText;
using kmlengine::FeatureVisitor;
using kmlengine::GetRootFeature;
using kmlengine::KmlFile;
using kmlengine::KmlFilePtr;
using kmlengine::VisitFeatureHierarchy;
using std::cout;
using std::cerr;
using std::endl;
// The FeatureVisitor class implements the mechanism to walk a Feature
// hierarchy. This subclass calls CreateBalloonText on each Feature and prints
// the composited text to stdout.
class FeatureBalloonPrinter : public FeatureVisitor {
public:
FeatureBalloonPrinter(const KmlFilePtr& kml_file) :
kml_file_(kml_file) {}
// The callback from VisitFeatureHierarchy.
virtual void VisitFeature(const kmldom::FeaturePtr& f) {
std::string fname = f->has_name() ? f->get_name() : "Unnamed feature";
cout << "Feature balloon text for " << fname << endl;
cout << CreateBalloonText(kml_file_, f) << endl << endl;
}
private:
const KmlFilePtr kml_file_;
};
void VisitFeatureBalloons(const KmlFilePtr& kml_file) {
FeatureBalloonPrinter feature_balloon_printer(kml_file);
VisitFeatureHierarchy(GetRootFeature(kml_file->get_root()),
feature_balloon_printer);
}
int HandleFile(const char* filename) {
std::string file_data;
if (!kmlbase::File::ReadFileToString(filename, &file_data)) {
cerr << "error: read of " << filename << " failed" << endl;
return 1;
}
std::string errors;
KmlFilePtr kml_file = KmlFile::CreateFromParse(file_data, &errors);
if (!kml_file || !errors.empty()) {
cerr << "parse failed: " << errors << endl;;
return 1;
}
VisitFeatureBalloons(kml_file);
return 0;
}
int main(int argc, char** argv) {
if (argc != 2) {
std::cerr << "usage: " << argv[0] << " kmlfile" << endl;
return -1;
}
return HandleFile(argv[1]);
}
|
