Repository navigation
Expand file tree
/
Copy pathPythonCommandLine.cs
More file actions
623 lines (520 loc) · 22.6 KB
/
Copy pathPythonCommandLine.cs
File metadata and controls
623 lines (520 loc) · 22.6 KB
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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the Apache 2.0 License.
// See the LICENSE file in the project root for more information.
#if FEATURE_FULL_CONSOLE
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Threading;
using Microsoft.Scripting;
using Microsoft.Scripting.Hosting.Shell;
using Microsoft.Scripting.Runtime;
using Microsoft.Scripting.Utils;
using IronPython.Compiler;
using IronPython.Modules;
using IronPython.Runtime;
using IronPython.Runtime.Exceptions;
using IronPython.Runtime.Operations;
namespace IronPython.Hosting {
/// <summary>
/// A simple Python command-line should mimic the standard python.exe
/// </summary>
public class PythonCommandLine : CommandLine {
private PythonContext PythonContext {
get { return (PythonContext)Language; }
}
private new PythonConsoleOptions Options { get { return (PythonConsoleOptions)base.Options; } }
public PythonCommandLine() {
}
protected override string/*!*/ Logo {
get {
return GetLogoDisplay();
}
}
/// <summary>
/// Returns the display look for IronPython.
///
/// The returned string uses This \n instead of Environment.NewLine for it's line seperator
/// because it is intended to be outputted through the Python I/O system.
/// </summary>
public static string GetLogoDisplay() {
return "IronPython " + PythonContext.GetVersionString() +
"\nType \"help\", \"copyright\", \"credits\" or \"license\" for more information.\n";
}
private int GetEffectiveExitCode(SystemExitException/*!*/ e) {
object nonIntegerCode;
int exitCode = e.GetExitCode(out nonIntegerCode);
if (nonIntegerCode != null) {
Console.WriteLine(nonIntegerCode.ToString(), Style.Error);
}
return exitCode;
}
protected override void Shutdown() {
try {
Language.Shutdown();
} catch (Exception e) {
Console.WriteLine("", Style.Error);
Console.WriteLine("Error in sys.exitfunc:", Style.Error);
Console.Write(Language.FormatException(e), Style.Error);
}
}
protected override int Run() {
if (Options.ModuleToRun != null) {
// PEP 338 support - http://www.python.org/dev/peps/pep-0338
// This requires the presence of the Python standard library or
// an equivalent runpy.py which defines a run_module method.
// import the runpy module
object runpy, runMod;
try {
runpy = Importer.Import(
PythonContext.SharedContext,
"runpy",
PythonTuple.EMPTY,
0
);
} catch (Exception) {
Console.WriteLine("Could not import runpy module", Style.Error);
return -1;
}
// get the run_module method
try {
runMod = PythonOps.GetBoundAttr(PythonContext.SharedContext, runpy, "run_module");
} catch (Exception) {
Console.WriteLine("Could not access runpy.run_module", Style.Error);
return -1;
}
// call it with the name of the module to run
try {
PythonOps.CallWithKeywordArgs(
PythonContext.SharedContext,
runMod,
new object[] { Options.ModuleToRun, "__main__", ScriptingRuntimeHelpers.True },
new string[] { "run_name", "alter_sys" }
);
} catch (SystemExitException e) {
return GetEffectiveExitCode(e);
}
return 0;
}
int result = base.Run();
// Check if IRONPYTHONINSPECT was set during execution
string inspectLine = Environment.GetEnvironmentVariable("IRONPYTHONINSPECT");
if (inspectLine != null && !Options.Introspection)
result = RunInteractiveLoop();
return result;
}
protected override int RunInteractiveLoop() {
var sys = Engine.GetSysModule();
sys.SetVariable("ps1", ">>> ");
sys.SetVariable("ps2", "... ");
return base.RunInteractiveLoop();
}
#region Initialization
protected override void Initialize() {
Debug.Assert(Language != null);
base.Initialize();
Console.Output = new OutputWriter(PythonContext, false);
Console.ErrorOutput = new OutputWriter(PythonContext, true);
// TODO: must precede path initialization! (??? - test test_importpkg.py)
int pathIndex = PythonContext.PythonOptions.SearchPaths.Count;
Language.DomainManager.LoadAssembly(typeof(string).Assembly);
Language.DomainManager.LoadAssembly(typeof(System.Diagnostics.Debug).Assembly);
InitializePath(ref pathIndex);
InitializeEnvironmentVariables();
InitializeModules();
InitializeExtensionDLLs();
ImportSite();
// Equivalent to -i command line option
// Check if IRONPYTHONINSPECT was set before execution
string inspectLine = Environment.GetEnvironmentVariable("IRONPYTHONINSPECT");
if (inspectLine != null)
Options.Introspection = true;
// If running in console mode (including with -c), the current working directory should be
// the first entry in sys.path. If running a script file, however, the CWD should not be added;
// instead, the script's containg folder should be added.
string fullPath = "."; // this is a valid path resolving to current working dir. Pinky-swear.
if (Options.Command == null && Options.FileName != null) {
if (Options.FileName == "-") {
Options.FileName = "<stdin>";
} else {
if (Directory.Exists(Options.FileName)) {
Options.FileName = Path.Combine(Options.FileName, "__main__.py");
}
if (!File.Exists(Options.FileName)) {
Console.WriteLine(
String.Format(
System.Globalization.CultureInfo.InvariantCulture,
"File {0} does not exist.",
Options.FileName),
Style.Error);
Environment.Exit(1);
}
fullPath = Path.GetDirectoryName(
Language.DomainManager.Platform.GetFullPath(Options.FileName)
);
}
}
PythonContext.InsertIntoPath(0, fullPath);
#if FEATURE_THREAD
PythonContext.MainThread = Thread.CurrentThread;
#endif
}
protected override Scope/*!*/ CreateScope() {
ModuleOptions trueDiv = (PythonContext.PythonOptions.DivisionOptions == PythonDivisionOptions.New) ? ModuleOptions.TrueDivision : ModuleOptions.None;
var modCtx = new ModuleContext(new PythonDictionary(), PythonContext);
modCtx.Features = trueDiv;
modCtx.InitializeBuiltins(true);
PythonContext.PublishModule("__main__", modCtx.Module);
modCtx.Globals["__doc__"] = null;
modCtx.Globals["__name__"] = "__main__";
return modCtx.GlobalScope;
}
private void InitializePath(ref int pathIndex) {
// paths, environment vars
if (!Options.IgnoreEnvironmentVariables) {
string path = Environment.GetEnvironmentVariable("IRONPYTHONPATH");
if (path != null && path.Length > 0) {
string[] paths = path.Split(Path.PathSeparator);
foreach (string p in paths) {
PythonContext.InsertIntoPath(pathIndex++, p);
}
}
}
}
private void InitializeEnvironmentVariables() {
if (!Options.IgnoreEnvironmentVariables) {
string warnings = Environment.GetEnvironmentVariable("IRONPYTHONWARNINGS");
object o = PythonContext.GetSystemStateValue("warnoptions");
if (o == null) {
o = new List();
PythonContext.SetSystemStateValue("warnoptions", o);
}
if (o is List warnoptions && !string.IsNullOrEmpty(warnings)) {
string[] warns = warnings.Split(',');
foreach (string warn in warns) {
warnoptions.Add(warn);
}
}
}
}
private void InitializeModules() {
string executable = "";
string prefix = null;
// paths
Assembly entryAssembly = Assembly.GetEntryAssembly();
// Can be null if called from unmanaged code (VS integration scenario)
if (entryAssembly != null) {
executable = entryAssembly.Location;
prefix = Path.GetDirectoryName(executable);
#if NETCOREAPP || NETSTANDARD
if (Path.GetExtension(executable) == ".dll") {
var name = Path.GetFileNameWithoutExtension(executable);
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) {
var runner = Path.Combine(prefix, name + ".exe");
if (File.Exists(runner)) {
executable = runner;
} else {
runner = Path.Combine(prefix, name + ".bat");
if (File.Exists(runner)) executable = runner;
}
} else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux) || RuntimeInformation.IsOSPlatform(OSPlatform.OSX)) {
var runner = Path.Combine(prefix, name);
if (File.Exists(runner)) {
executable = runner;
} else {
runner = Path.Combine(prefix, name + ".sh");
if (File.Exists(runner)) executable = runner;
}
}
}
#endif
}
// Make sure there an IronPython Lib directory, and if not keep looking up
while (prefix != null && !File.Exists(Path.Combine(prefix, "Lib/os.py"))) {
prefix = Path.GetDirectoryName(prefix);
}
PythonContext.SetHostVariables(prefix ?? "", executable, null);
}
/// <summary>
/// Loads any extension DLLs present in sys.prefix\DLLs directory and adds references to them.
///
/// This provides an easy drop-in location for .NET assemblies which should be automatically referenced
/// (exposed via import), COM libraries, and pre-compiled Python code.
/// </summary>
private void InitializeExtensionDLLs() {
string dir = Path.Combine(PythonContext.InitialPrefix, "DLLs");
if (Directory.Exists(dir)) {
foreach (string file in Directory.EnumerateFiles(dir, "*.dll")) {
if (file.ToLower().EndsWith(".dll")) {
try {
ClrModule.AddReferenceToFile(PythonContext.SharedContext, new FileInfo(file).Name);
} catch {
}
}
}
}
}
private void ImportSite() {
if (Options.SkipImportSite)
return;
try {
Importer.ImportModule(PythonContext.SharedContext, null, "site", false, -1);
} catch (Exception e) {
Console.Write(Language.FormatException(e), Style.Error);
}
}
#endregion
#region Interactive
protected override int RunInteractive() {
PrintLogo();
if (Scope == null) {
Scope = CreateScope();
}
int result = 1;
try {
RunStartup();
result = 0;
} catch (SystemExitException pythonSystemExit) {
return GetEffectiveExitCode(pythonSystemExit);
} catch (Exception) {
}
var sys = Engine.GetSysModule();
sys.SetVariable("ps1", ">>> ");
sys.SetVariable("ps2", "... ");
result = RunInteractiveLoop();
return (int)result;
}
protected override string Prompt {
get {
object value;
if (Engine.GetSysModule().TryGetVariable("ps1", out value)) {
var context = ((PythonScopeExtension)Scope.GetExtension(Language.ContextId)).ModuleContext.GlobalContext;
return PythonOps.ToString(context, value);
}
return ">>> ";
}
}
public override string PromptContinuation {
get {
object value;
if (Engine.GetSysModule().TryGetVariable("ps2", out value)) {
var context = ((PythonScopeExtension)Scope.GetExtension(Language.ContextId)).ModuleContext.GlobalContext;
return PythonOps.ToString(context, value);
}
return "... ";
}
}
private void RunStartup() {
if (Options.IgnoreEnvironmentVariables)
return;
string startup = Environment.GetEnvironmentVariable("IRONPYTHONSTARTUP");
if (startup != null && startup.Length > 0) {
if (Options.HandleExceptions) {
try {
ExecuteCommand(Engine.CreateScriptSourceFromFile(startup));
} catch (Exception e) {
if (e is SystemExitException) throw;
Console.Write(Language.FormatException(e), Style.Error);
}
} else {
ExecuteCommand(Engine.CreateScriptSourceFromFile(startup));
}
}
}
protected override int? TryInteractiveAction() {
try {
try {
return TryInteractiveActionWorker();
} finally {
// sys.exc_info() is normally cleared after functions exit. But interactive console enters statements
// directly instead of using functions. So clear explicitly.
PythonOps.ClearCurrentException();
}
} catch (SystemExitException se) {
return GetEffectiveExitCode(se);
}
}
/// <summary>
/// Attempts to run a single interaction and handle any language-specific
/// exceptions. Base classes can override this and call the base implementation
/// surrounded with their own exception handling.
///
/// Returns null if successful and execution should continue, or an exit code.
/// </summary>
private int? TryInteractiveActionWorker() {
int? result = null;
try {
result = RunOneInteraction();
#if !FEATURE_EXCEPTION_STATE
} catch (ThreadAbortException) {
#else
} catch (ThreadAbortException tae) {
if (tae.ExceptionState is KeyboardInterruptException pki) {
Thread.ResetAbort();
}
#endif
}
return result;
}
/// <summary>
/// Parses a single interactive command and executes it.
///
/// Returns null if successful and execution should continue, or the appropiate exit code.
/// </summary>
private int? RunOneInteraction() {
bool continueInteraction;
string s = ReadStatement(out continueInteraction);
if (continueInteraction == false) {
PythonContext.DispatchCommand(null); // Notify dispatcher that we're done
return 0;
}
if (String.IsNullOrEmpty(s)) {
// Is it an empty line?
Console.Write(String.Empty, Style.Out);
return null;
}
SourceUnit su = Language.CreateSnippet(s, "<stdin>", SourceCodeKind.InteractiveCode);
PythonCompilerOptions pco = (PythonCompilerOptions)Language.GetCompilerOptions(Scope);
pco.Module |= ModuleOptions.ExecOrEvalCode;
Action action = delegate () {
try {
su.Compile(pco, ErrorSink).Run(Scope);
} catch (Exception e) {
if (e is SystemExitException) {
throw;
}
// Need to handle exceptions in the delegate so that they're not wrapped
// in a TargetInvocationException
UnhandledException(e);
}
};
try {
PythonContext.DispatchCommand(action);
} catch (SystemExitException sx) {
return GetEffectiveExitCode(sx);
}
return null;
}
protected override ErrorSink/*!*/ ErrorSink {
get { return ThrowingErrorSink.Default; }
}
protected override int GetNextAutoIndentSize(string text) {
return Parser.GetNextAutoIndentSize(text, Options.AutoIndentSize);
}
#endregion
#region Command
protected override int RunCommand(string command) {
if (Options.HandleExceptions) {
try {
return RunCommandWorker(command);
} catch (Exception e) {
Console.WriteLine(Language.FormatException(e), Style.Error);
return 1;
}
}
return RunCommandWorker(command);
}
private int RunCommandWorker(string command) {
ScriptCode compiledCode;
ModuleOptions trueDiv = (PythonContext.PythonOptions.DivisionOptions == PythonDivisionOptions.New) ?
ModuleOptions.TrueDivision : ModuleOptions.None;
ModuleOptions modOpt = ModuleOptions.Optimized | ModuleOptions.ModuleBuiltins | trueDiv;
;
if (Options.SkipFirstSourceLine) {
modOpt |= ModuleOptions.SkipFirstLine;
}
PythonModule module = PythonContext.CompileModule(
"", // there is no file, it will be set to <module>
"__main__",
PythonContext.CreateSnippet(command, "-c", SourceCodeKind.File),
modOpt,
out compiledCode);
PythonContext.PublishModule("__main__", module);
Scope = module.Scope;
try {
compiledCode.Run(Scope);
} catch (SystemExitException pythonSystemExit) {
// disable introspection when exited:
Options.Introspection = false;
return GetEffectiveExitCode(pythonSystemExit);
}
return 0;
}
#endregion
#region File
protected override int RunFile(string/*!*/ fileName) {
int result = 1;
if (Options.HandleExceptions) {
try {
result = RunFileWorker(fileName);
} catch (Exception e) {
UnhandledException(e);
}
} else {
result = RunFileWorker(fileName);
}
return result;
}
private int RunFileWorker(string/*!*/ fileName) {
try {
// There is no PEP for this case, only http://bugs.python.org/issue1739468
object importer;
if (Importer.TryImportMainFromZip(DefaultContext.Default, fileName, out importer)) {
return 0;
}
if (importer != null && importer.GetType() != typeof(PythonImport.NullImporter)) {
Console.WriteLine(String.Format("can't find '__main__' module in '{0}'", fileName), Style.Error);
return 0;
}
} catch (SystemExitException pythonSystemExit) {
// disable introspection when exited:
Options.Introspection = false;
return GetEffectiveExitCode(pythonSystemExit);
}
// classic file
ScriptCode compiledCode;
ModuleOptions modOpt = ModuleOptions.Optimized | ModuleOptions.ModuleBuiltins;
if (Options.SkipFirstSourceLine) {
modOpt |= ModuleOptions.SkipFirstLine;
}
PythonModule module = PythonContext.CompileModule(
fileName,
"__main__",
PythonContext.CreateFileUnit(String.IsNullOrEmpty(fileName) ? null : fileName, PythonContext.DefaultEncoding),
modOpt,
out compiledCode);
PythonContext.PublishModule("__main__", module);
Scope = module.Scope;
try {
compiledCode.Run(Scope);
} catch (SystemExitException pythonSystemExit) {
// disable introspection when exited:
Options.Introspection = false;
return GetEffectiveExitCode(pythonSystemExit);
}
return 0;
}
#endregion
public override IList<string> GetGlobals(string name) {
IList<string> res = base.GetGlobals(name);
foreach (object builtinName in PythonContext.BuiltinModuleInstance.__dict__.Keys) {
if (builtinName is string strName && strName.StartsWith(name)) {
res.Add(strName);
}
}
return res;
}
protected override void UnhandledException(Exception e) {
PythonOps.PrintException(PythonContext.SharedContext, e, Console);
}
private new PythonContext Language {
get {
return (PythonContext)base.Language;
}
}
}
}
#endif