TerrainGen coverage

terraingen/
Coverage:
low: ≥ 0%
medium: ≥ 75.0%
high: ≥ 90.0%
Lines:
174 / 180
96.7%
Branches:
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93.2%
Functions:
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100.0%
app/cli.cpp
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1 #include "terraingen/app/cli.h"
2
3 #include "terraingen/app/gui/run.h"
4 #include "terraingen/config/build.h"
5 #include "terraingen/config/generate.h"
6 #include "terraingen/config/json.h"
7 #include "terraingen/config/validate.h"
8 #include "terraingen/util/build_info.h"
9 #include "terraingen/util/log.h"
10 #include "terraingen/util/version.h"
11
12 #include <algorithm>
13 #include <cstddef>
14 #include <exception>
15 #include <filesystem>
16 #include <optional>
17 #include <stdexcept>
18 #include <string>
19 #include <vector>
20
21 namespace terraingen::cli {
22
23 namespace {
24
25 /// Options of the generate command.
26 struct GenerateArgs {
27 std::filesystem::path config;
28 std::optional<std::filesystem::path> outputDir;
29 LogLevel logLevel = LogLevel::Info;
30 unsigned threads = 0;
31 std::optional<Backend> backend = std::nullopt;
32 };
33
34 94 GenerateArgs ParseGenerate(const std::vector<std::string>& args) {
35 94 GenerateArgs parsed;
36 94 bool haveConfig = false;
37
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 348 for (std::size_t i = 0; i < args.size(); ++i) {
38 264 const std::string& arg = args[i];
39 171 const auto value = [&]() -> const std::string& {
40
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 171 if (i + 1 >= args.size()) {
41
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 2 throw std::invalid_argument(arg + " needs a value");
42 }
43 169 return args[++i];
44 264 };
45
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 264 if (arg == "--output-dir") {
46
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 80 parsed.outputDir = value();
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 184 } else if (arg == "--log-level") {
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 81 const std::string& name = value();
49
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 81 const std::optional<LogLevel> level = ParseLogLevel(name);
50
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 81 if (!level) {
51 throw std::invalid_argument(
52
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 2 "--log-level needs trace, debug, info, warning, error or off, not '" + name +
53
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 3 "'");
54 }
55 80 parsed.logLevel = *level;
56
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 103 } else if (arg == "--threads") {
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 6 parsed.threads = ParseThreads(value());
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 97 } else if (arg == "--backend") {
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 4 parsed.backend = ParseBackend(value());
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 93 } else if (arg.rfind("--", 0) == 0) {
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 1 throw std::invalid_argument("Unknown option " + arg);
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 92 } else if (haveConfig) {
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 1 throw std::invalid_argument("Unexpected argument " + arg);
64 } else {
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 91 parsed.config = arg;
66 91 haveConfig = true;
67 }
68 }
69
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 84 if (!haveConfig) {
70
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 1 throw std::invalid_argument("Missing the configuration file");
71 }
72 83 return parsed;
73 11 }
74
75 /// Restores the log level it was made with when it goes out of scope.
76 class LogLevelScope {
77 public:
78 83 explicit LogLevelScope(LogLevel level) : previous_(GetLogLevel()) {
79 83 SetLogLevel(level);
80 83 }
81 LogLevelScope(const LogLevelScope&) = delete;
82 LogLevelScope& operator=(const LogLevelScope&) = delete;
83 83 ~LogLevelScope() {
84 83 SetLogLevel(previous_);
85 83 }
86
87 private:
88 LogLevel previous_;
89 };
90
91 /// Runs `command`, reporting a configuration error against the file `config` and any other error
92 /// as terraingen's, and returns the exit code.
93 template <typename Command>
94 88 int RunReporting(const std::filesystem::path& config, std::ostream& err, Command command) {
95 try {
96
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int terraingen::cli::(anonymous namespace)::RunReporting<terraingen::cli::(anonymous namespace)::Generate(std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, std::ostream&, std::ostream&)::{lambda()#1}>(std::filesystem::__cxx11::path const&, std::ostream&, terraingen::cli::(anonymous namespace)::Generate(std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, std::ostream&, std::ostream&)::{lambda()#1}):
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int terraingen::cli::(anonymous namespace)::RunReporting<terraingen::cli::(anonymous namespace)::Validate(std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, std::ostream&, std::ostream&)::{lambda()#1}>(std::filesystem::__cxx11::path const&, std::ostream&, terraingen::cli::(anonymous namespace)::Validate(std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, std::ostream&, std::ostream&)::{lambda()#1}):
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 88 command();
97
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int terraingen::cli::(anonymous namespace)::RunReporting<terraingen::cli::(anonymous namespace)::Generate(std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, std::ostream&, std::ostream&)::{lambda()#1}>(std::filesystem::__cxx11::path const&, std::ostream&, terraingen::cli::(anonymous namespace)::Generate(std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, std::ostream&, std::ostream&)::{lambda()#1}):
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int terraingen::cli::(anonymous namespace)::RunReporting<terraingen::cli::(anonymous namespace)::Validate(std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, std::ostream&, std::ostream&)::{lambda()#1}>(std::filesystem::__cxx11::path const&, std::ostream&, terraingen::cli::(anonymous namespace)::Validate(std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, std::ostream&, std::ostream&)::{lambda()#1}):
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 5 } catch (const ConfigError& error) {
98
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int terraingen::cli::(anonymous namespace)::RunReporting<terraingen::cli::(anonymous namespace)::Generate(std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, std::ostream&, std::ostream&)::{lambda()#1}>(std::filesystem::__cxx11::path const&, std::ostream&, terraingen::cli::(anonymous namespace)::Generate(std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, std::ostream&, std::ostream&)::{lambda()#1}):
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int terraingen::cli::(anonymous namespace)::RunReporting<terraingen::cli::(anonymous namespace)::Validate(std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, std::ostream&, std::ostream&)::{lambda()#1}>(std::filesystem::__cxx11::path const&, std::ostream&, terraingen::cli::(anonymous namespace)::Validate(std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, std::ostream&, std::ostream&)::{lambda()#1}):
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 4 err << config.string() << ": " << error.what() << "\n";
99 4 return kExitInvalidConfig;
100 1 } catch (const std::exception& error) {
101
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int terraingen::cli::(anonymous namespace)::RunReporting<terraingen::cli::(anonymous namespace)::Generate(std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, std::ostream&, std::ostream&)::{lambda()#1}>(std::filesystem::__cxx11::path const&, std::ostream&, terraingen::cli::(anonymous namespace)::Generate(std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, std::ostream&, std::ostream&)::{lambda()#1}):
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int terraingen::cli::(anonymous namespace)::RunReporting<terraingen::cli::(anonymous namespace)::Validate(std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, std::ostream&, std::ostream&)::{lambda()#1}>(std::filesystem::__cxx11::path const&, std::ostream&, terraingen::cli::(anonymous namespace)::Validate(std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, std::ostream&, std::ostream&)::{lambda()#1}):
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 1 err << "terraingen: " << error.what() << "\n";
102 1 return kExitFailure;
103 }
104 83 return kExitSuccess;
105 }
106
107 94 int Generate(const std::vector<std::string>& args, std::ostream& out, std::ostream& err) {
108
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 94 const GenerateArgs parsed = ParseGenerate(args);
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 83 const LogLevelScope level(parsed.logLevel);
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 83 return RunReporting(parsed.config, err, [&] {
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 83 const TerrainConfig config = LoadConfig(parsed.config);
112
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 82 const std::filesystem::path inputs = parsed.config.parent_path();
113 const GeneratedTerrain terrain =
114
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 82 GenerateTerrain(config, inputs, parsed.threads, parsed.backend);
115
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 82 const std::filesystem::path outputs = parsed.outputDir.value_or(inputs);
116 82 const Stopwatch stopwatch;
117
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 82 const auto written = WriteOutputs(config, terrain, outputs);
118
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 81 out << Summary(terrain) << "\n";
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 81 out << "Wrote " << written.size() << (written.size() == 1 ? " file" : " files") << " to "
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 162 << (outputs.empty() ? std::filesystem::path(".") : outputs).string() << " in "
121
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 162 << FormatDuration(stopwatch.Milliseconds()) << "\n";
122 251 });
123 83 }
124
125 /// Prints each backend with its device or why it is unavailable, then the default backend.
126 1 int ListBackends(std::ostream& out, std::ostream& err) {
127
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 5 for (const BackendStatus& status : Backends()) {
128 4 out << BackendName(status.backend) << ": "
129
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 6 << (status.available ? "available on " + status.device
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 2 : "unavailable: " + status.reason)
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 8 << "\n";
132 1 }
133 try {
134
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 1 out << "default: " << BackendName(DefaultBackend()) << "\n";
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 ✗ } catch (const std::invalid_argument& error) {
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 ✗ err << "terraingen: " << error.what() << "\n";
137 ✗ return kExitFailure;
138 }
139 1 return kExitSuccess;
140 }
141
142 7 int Validate(const std::vector<std::string>& args, std::ostream& out, std::ostream& err) {
143
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 7 if (args.size() != 2) {
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 2 throw std::invalid_argument("validate needs exactly one configuration file");
145 }
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 5 const std::filesystem::path path = args[1];
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 5 return RunReporting(path, err, [&] {
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 5 const TerrainConfig config = LoadConfig(path);
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 6 const ConfigSummary summary = ValidateConfig(config, path.parent_path());
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 2 out << path.string() << " is valid: ";
151 2 std::vector<RasterGrid> grids;
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 4 for (const std::optional<RasterGrid>& grid : summary.outputGrids) {
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 2 if (grid && std::find(grids.begin(), grids.end(), *grid) == grids.end()) {
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 1 out << (grids.empty() ? "a " : " and ") << grid->width << "x" << grid->height;
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 1 grids.push_back(*grid);
156 }
157 }
158
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 2 out << (grids.empty() ? "no grids" : grids.size() == 1 ? " grid" : " grids");
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 2 if (summary.expectedCraters) {
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 1 out << ", about " << static_cast<long long>(*summary.expectedCraters)
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 1 << " craters expected";
162 }
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 2 out << ", " << config.layers.size() << " layers and " << config.outputs.size()
164
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 2 << " outputs\n";
165 14 });
166 5 }
167
168 } // namespace
169
170 15 unsigned ParseThreads(const std::string& text) {
171 15 std::size_t used = 0;
172 15 unsigned long value = 0;
173 try {
174
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 15 value = std::stoul(text, &used);
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 5 } catch (const std::exception&) {
176 5 used = 0;
177 5 }
178
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 15 if (used == 0 || used != text.size() || text.front() == '-' || value > 4096) {
179 throw std::invalid_argument(
180
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 10 "--threads needs a count from 0 (every hardware thread) to 4096, not '" + text + "'");
181 }
182 5 return static_cast<unsigned>(value);
183 }
184
185 12 Backend ParseBackend(const std::string& text) {
186
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 12 if (const std::optional<Backend> backend = BackendNamed(text)) {
187 9 return *backend;
188 }
189 3 throw std::invalid_argument("--backend needs auto, cpu, gpu, vulkan, cuda or metal, not '" +
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 6 text + "'");
191 }
192
193 12 GuiArgs ParseGuiArgs(const std::vector<std::string>& args) {
194 12 GuiArgs parsed;
195
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 21 for (std::size_t i = 0; i < args.size(); ++i) {
196 18 const std::string& arg = args[i];
197 7 const auto value = [&]() -> const std::string& {
198
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 7 if (i + 1 >= args.size()) {
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 3 throw std::invalid_argument(arg + " needs a value");
200 }
201 4 return args[++i];
202 18 };
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 18 if (arg == "--threads") {
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 4 parsed.threads = ParseThreads(value());
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 14 } else if (arg == "--backend") {
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 3 parsed.backend = ParseBackend(value());
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 11 } else if (arg.rfind("--", 0) == 0) {
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 2 throw std::invalid_argument("Unknown option " + arg + " with --gui");
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 9 } else if (!parsed.open.empty()) {
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 2 throw std::invalid_argument("Unexpected argument " + arg);
211 } else {
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 7 parsed.open = arg;
213 }
214 }
215 3 return parsed;
216 9 }
217
218 6 std::string Usage() {
219 return "Usage:\n"
220 " terraingen CONFIG [--output-dir DIR] [--log-level LEVEL] [--threads N]\n"
221 " [--backend auto|cpu|gpu|vulkan|cuda|metal]\n"
222 " Generate the terrain the JSON file CONFIG describes\n"
223 " terraingen validate CONFIG\n"
224 " Check CONFIG without generating\n"
225 " terraingen schema Print every configuration type with its defaults\n"
226 " terraingen backends Show where terrains can be evaluated here, and the default\n"
227 " terraingen [PATH] --gui [--threads N] [--backend auto|cpu|gpu|vulkan|cuda|metal]\n"
228 " Open the GUI on a configuration, GeoTIFF heights or the\n"
229 " starter terrain\n"
230 " terraingen -V, --version\n"
231 " Show version and build information\n"
232
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 12 " terraingen -h, --help Show this message\n";
233 }
234
235 123 int Run(const std::vector<std::string>& args, std::ostream& out, std::ostream& err) {
236 try {
237
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 123 if (args.empty()) {
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 2 throw std::invalid_argument("Missing a command or configuration file");
239 }
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 121 const auto gui = std::find(args.begin(), args.end(), "--gui");
241
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 121 if (gui != args.end()) {
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 8 std::vector<std::string> rest(args.begin(), gui);
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 8 rest.insert(rest.end(), gui + 1, args.end());
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 8 return RunGui(rest, out, err);
245 8 }
246 113 const std::string& first = args.front();
247
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 113 if (first == "--help" || first == "-h") {
248
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 6 out << Usage();
249 6 return kExitSuccess;
250 }
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 107 if (first == "--version" || first == "-V") {
252
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 2 const Version version = GetVersion();
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 2 const BuildInfo build = GetBuildInfo();
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 2 out << "TerrainGen " << version.major << "." << version.minor << "." << version.patch
255 2 << " (" << build.gitSha << (build.gitDirty ? "-dirty" : "") << ", "
256
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 2 << build.buildDate << ")\n";
257 2 return kExitSuccess;
258 2 }
259
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 105 if (first == "schema") {
260
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 2 if (args.size() != 1) {
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 1 throw std::invalid_argument("schema takes no arguments");
262 }
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 1 out << ConfigCatalog();
264 1 return kExitSuccess;
265 }
266
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 103 if (first == "backends") {
267
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 2 if (args.size() != 1) {
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 1 throw std::invalid_argument("backends takes no arguments");
269 }
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 1 return ListBackends(out, err);
271 }
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 101 if (first == "validate") {
273
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 7 return Validate(args, out, err);
274 }
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 94 return Generate(args, out, err);
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 24 } catch (const std::invalid_argument& error) {
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 24 err << "terraingen: " << error.what() << "\nRun 'terraingen --help' to see the usage.\n";
278 24 return kExitUsage;
279 24 }
280 }
281
282 } // namespace terraingen::cli
283