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
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
#include <mbgl/util/default_styles.hpp>
#include <mbgl/util/run_loop.hpp>
#include <mbgl/util/string.hpp>
#include <mbgl/storage/default_file_source.hpp>
#include <args/args.hxx>
#include <cstdlib>
#include <iostream>
#include <csignal>
#include <atomic>
using namespace std::literals::chrono_literals;
int main(int argc, char *argv[]) {
args::ArgumentParser argumentParser("Mapbox GL offline tool");
args::HelpFlag helpFlag(argumentParser, "help", "Display this help menu", {'h', "help"});
args::ValueFlag<std::string> tokenValue(argumentParser, "key", "Mapbox access token", {'t', "token"});
args::ValueFlag<std::string> styleValue(argumentParser, "URL", "Map stylesheet", {'s', "style"});
args::ValueFlag<std::string> outputValue(argumentParser, "file", "Output database file name", {'o', "output"});
args::ValueFlag<double> northValue(argumentParser, "degrees", "North latitude", {"north"});
args::ValueFlag<double> westValue(argumentParser, "degrees", "West longitude", {"west"});
args::ValueFlag<double> southValue(argumentParser, "degrees", "South latitude", {"south"});
args::ValueFlag<double> eastValue(argumentParser, "degrees", "East longitude", {"east"});
args::ValueFlag<double> minZoomValue(argumentParser, "number", "Min zoom level", {"minZoom"});
args::ValueFlag<double> maxZoomValue(argumentParser, "number", "Max zoom level", {"maxZoom"});
args::ValueFlag<double> pixelRatioValue(argumentParser, "number", "Pixel ratio", {"pixelRatio"});
try {
argumentParser.ParseCLI(argc, argv);
} catch (args::Help) {
std::cout << argumentParser;
exit(0);
} catch (args::ParseError e) {
std::cerr << e.what() << std::endl;
std::cerr << argumentParser;
exit(1);
} catch (args::ValidationError e) {
std::cerr << e.what() << std::endl;
std::cerr << argumentParser;
exit(2);
}
std::string style = styleValue ? args::get(styleValue) : mbgl::util::default_styles::streets.url;
// Bay area
double north = northValue ? args::get(northValue) : 37.2;
double west = westValue ? args::get(westValue) : -122.8;
double south = southValue ? args::get(southValue) : 38.1;
double east = eastValue ? args::get(eastValue) : -121.7;
double minZoom = minZoomValue ? args::get(minZoomValue) : 0.0;
double maxZoom = maxZoomValue ? args::get(maxZoomValue) : 15.0;
double pixelRatio = pixelRatioValue ? args::get(pixelRatioValue) : 1.0;
std::string output = outputValue ? args::get(outputValue) : "offline.db";
const char* tokenEnv = getenv("MAPBOX_ACCESS_TOKEN");
std::string token = tokenValue ? args::get(tokenValue) : (tokenEnv ? tokenEnv : std::string());
using namespace mbgl;
util::RunLoop loop;
DefaultFileSource fileSource(output, ".");
std::unique_ptr<OfflineRegion> region;
fileSource.setAccessToken(token);
LatLngBounds boundingBox = LatLngBounds::hull(LatLng(north, west), LatLng(south, east));
OfflineTilePyramidRegionDefinition definition(style, boundingBox, minZoom, maxZoom, pixelRatio);
OfflineRegionMetadata metadata;
class Observer : public OfflineRegionObserver {
public:
Observer(OfflineRegion& region_, DefaultFileSource& fileSource_, util::RunLoop& loop_)
: region(region_),
fileSource(fileSource_),
loop(loop_),
start(util::now()) {
}
void statusChanged(OfflineRegionStatus status) override {
if (status.downloadState == OfflineRegionDownloadState::Inactive) {
std::cout << "stopped" << std::endl;
loop.stop();
return;
}
std::string bytesPerSecond = "-";
auto elapsedSeconds = (util::now() - start) / 1s;
if (elapsedSeconds != 0) {
bytesPerSecond = util::toString(status.completedResourceSize / elapsedSeconds);
}
std::cout << status.completedResourceCount << " / " << status.requiredResourceCount
<< " resources"
<< (status.requiredResourceCountIsPrecise ? "; " : " (indeterminate); ")
<< status.completedResourceSize << " bytes downloaded"
<< " (" << bytesPerSecond << " bytes/sec)"
<< std::endl;
if (status.complete()) {
std::cout << "Finished" << std::endl;
loop.stop();
}
}
void responseError(Response::Error error) override {
std::cerr << error.reason << " downloading resource: " << error.message << std::endl;
}
void mapboxTileCountLimitExceeded(uint64_t limit) override {
std::cerr << "Error: reached limit of " << limit << " offline tiles" << std::endl;
}
OfflineRegion& region;
DefaultFileSource& fileSource;
util::RunLoop& loop;
Timestamp start;
};
static auto stop = [&] {
if (region) {
std::cout << "Stopping download... ";
fileSource.setOfflineRegionDownloadState(*region, OfflineRegionDownloadState::Inactive);
}
};
std::signal(SIGINT, [] (int) { stop(); });
fileSource.createOfflineRegion(definition, metadata, [&] (std::exception_ptr error, optional<OfflineRegion> region_) {
if (error) {
std::cerr << "Error creating region: " << util::toString(error) << std::endl;
loop.stop();
exit(1);
} else {
assert(region_);
region = std::make_unique<OfflineRegion>(std::move(*region_));
fileSource.setOfflineRegionObserver(*region, std::make_unique<Observer>(*region, fileSource, loop));
fileSource.setOfflineRegionDownloadState(*region, OfflineRegionDownloadState::Active);
}
});
loop.run();
return 0;
}
|
