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1800 lines (1505 loc) · 68.4 KB
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/* ****************************************************************************
*
* Copyright (c) Microsoft Corporation.
*
* This source code is subject to terms and conditions of the Apache License, Version 2.0. A
* copy of the license can be found in the License.html file at the root of this distribution. If
* you cannot locate the Apache License, Version 2.0, please send an email to
* [email protected]. By using this source code in any fashion, you are agreeing to be bound
* by the terms of the Apache License, Version 2.0.
*
* You must not remove this notice, or any other, from this software.
*
*
* ***************************************************************************/
using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Globalization;
using System.IO;
using System.Runtime.InteropServices;
using System.Security.Cryptography;
using Microsoft.Scripting;
using Microsoft.Scripting.Runtime;
using Microsoft.Scripting.Utils;
using IronPython.Runtime;
using IronPython.Runtime.Exceptions;
using IronPython.Runtime.Operations;
using IronPython.Runtime.Types;
#if FEATURE_NUMERICS
using System.Numerics;
#else
using Microsoft.Scripting.Math;
#endif
[assembly: PythonModule("nt", typeof(IronPython.Modules.PythonNT))]
namespace IronPython.Modules {
public static class PythonNT {
public const string __doc__ = "Provides low-level operationg system access for files, the environment, etc...";
#if FEATURE_PROCESS
private static Dictionary<int, Process> _processToIdMapping = new Dictionary<int, Process>();
private static List<int> _freeProcessIds = new List<int>();
private static int _processCount;
#endif
#region Public API Surface
#if FEATURE_PROCESS
public static void abort() {
System.Environment.FailFast("IronPython os.abort");
}
#endif
/// <summary>
/// Checks for the specific permissions, provided by the mode parameter, are available for the provided path. Permissions can be:
///
/// F_OK: Check to see if the file exists
/// R_OK | W_OK | X_OK: Check for the specific permissions. Only W_OK is respected.
/// </summary>
public static bool access(CodeContext/*!*/ context, string path, int mode) {
if (path == null) throw PythonOps.TypeError("expected string, got None");
#if FEATURE_FILESYSTEM
try {
FileAttributes fa = File.GetAttributes(path);
if (mode == F_OK) {
return true;
}
// match the behavior of the VC C Runtime
if ((fa & FileAttributes.Directory) != 0) {
// directories have read & write access
return true;
}
if ((fa & FileAttributes.ReadOnly) != 0 && (mode & W_OK) != 0) {
// want to write but file is read-only
return false;
}
return true;
} catch(ArgumentException) {
} catch(PathTooLongException) {
} catch(NotSupportedException) {
} catch(FileNotFoundException) {
} catch(DirectoryNotFoundException) {
} catch(IOException) {
} catch(UnauthorizedAccessException) {
}
return false;
#else
throw new NotImplementedException();
#endif
}
#if FEATURE_FILESYSTEM
public static void chdir([NotNull]string path) {
if (String.IsNullOrEmpty(path)) {
throw PythonExceptions.CreateThrowable(WindowsError, PythonExceptions._WindowsError.ERROR_INVALID_NAME, "Path cannot be an empty string");
}
try {
Directory.SetCurrentDirectory(path);
} catch (Exception e) {
throw ToPythonException(e, path);
}
}
public static void chmod(string path, int mode) {
try {
FileInfo fi = new FileInfo(path);
if ((mode & S_IWRITE) != 0) {
fi.Attributes &= ~(FileAttributes.ReadOnly);
} else {
fi.Attributes |= FileAttributes.ReadOnly;
}
} catch (Exception e) {
throw ToPythonException(e, path);
}
}
#endif
public static void close(CodeContext/*!*/ context, int fd) {
PythonContext pythonContext = PythonContext.GetContext(context);
PythonFileManager fileManager = pythonContext.FileManager;
PythonFile file;
if (fileManager.TryGetFileFromId(pythonContext, fd, out file)) {
fileManager.CloseIfLast(fd, file);
} else {
Stream stream = fileManager.GetObjectFromId(fd) as Stream;
if (stream == null) {
throw PythonExceptions.CreateThrowable(PythonExceptions.OSError, 9, "Bad file descriptor");
}
fileManager.CloseIfLast(fd, stream);
}
}
public static void closerange(CodeContext/*!*/ context, int fd_low, int fd_high) {
for (var fd = fd_low; fd <= fd_high; fd++) {
try {
close(context, fd);
} catch (OSException) {
// ignore errors on close
}
}
}
private static bool IsValidFd(CodeContext/*!*/ context, int fd) {
PythonContext pythonContext = PythonContext.GetContext(context);
PythonFile file;
if (pythonContext.FileManager.TryGetFileFromId(pythonContext, fd, out file)) {
return true;
}
Object o;
if (pythonContext.FileManager.TryGetObjectFromId(pythonContext, fd, out o)) {
var stream = o as Stream;
if (stream != null) {
return true;
}
}
return false;
}
public static int dup(CodeContext/*!*/ context, int fd) {
PythonContext pythonContext = PythonContext.GetContext(context);
PythonFile file;
if (pythonContext.FileManager.TryGetFileFromId(pythonContext, fd, out file)) {
return pythonContext.FileManager.AddToStrongMapping(file);
} else {
Stream stream = pythonContext.FileManager.GetObjectFromId(fd) as Stream;
if (stream == null) {
throw PythonExceptions.CreateThrowable(PythonExceptions.OSError, 9, "Bad file descriptor");
}
return pythonContext.FileManager.AddToStrongMapping(stream);
}
}
public static int dup2(CodeContext/*!*/ context, int fd, int fd2) {
PythonContext pythonContext = PythonContext.GetContext(context);
PythonFile file;
if (!IsValidFd(context, fd)) {
throw PythonExceptions.CreateThrowable(PythonExceptions.OSError, 9, "Bad file descriptor");
}
if (! pythonContext.FileManager.ValidateFdRange(fd2)) {
throw PythonExceptions.CreateThrowable(PythonExceptions.OSError, 9, "Bad file descriptor");
}
bool fd2Valid = IsValidFd(context, fd2);
if (fd == fd2) {
if (fd2Valid) {
return fd2;
}
throw PythonExceptions.CreateThrowable(PythonExceptions.OSError, 9, "Bad file descriptor");
}
if (fd2Valid) {
close(context, fd2);
}
if (pythonContext.FileManager.TryGetFileFromId(pythonContext, fd, out file)) {
return pythonContext.FileManager.AddToStrongMapping(file, fd2);
}
var stream = pythonContext.FileManager.GetObjectFromId(fd) as Stream;
if (stream == null) {
throw PythonExceptions.CreateThrowable(PythonExceptions.OSError, 9, "Bad file descriptor");
}
return pythonContext.FileManager.AddToStrongMapping(stream, fd2);
}
#if FEATURE_PROCESS
/// <summary>
/// single instance of environment dictionary is shared between multiple runtimes because the environment
/// is shared by multiple runtimes.
/// </summary>
public static readonly object environ = new PythonDictionary(new EnvironmentDictionaryStorage());
#endif
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Security", "CA2104:DoNotDeclareReadOnlyMutableReferenceTypes")]
public static readonly PythonType error = Builtin.OSError;
public static void _exit(CodeContext/*!*/ context, int code) {
PythonContext.GetContext(context).DomainManager.Platform.TerminateScriptExecution(code);
}
public static object fdopen(CodeContext/*!*/ context, int fd) {
return fdopen(context, fd, "r");
}
public static object fdopen(CodeContext/*!*/ context, int fd, string mode) {
return fdopen(context, fd, mode, 0);
}
public static object fdopen(CodeContext/*!*/ context, int fd, string mode, int bufsize) {
// check for a valid file mode...
PythonFile.ValidateMode(mode);
PythonContext pythonContext = PythonContext.GetContext(context);
PythonFile pf;
if (pythonContext.FileManager.TryGetFileFromId(pythonContext, fd, out pf)) {
return pf;
}
Stream stream = pythonContext.FileManager.GetObjectFromId(fd) as Stream;
if (stream == null) {
throw PythonExceptions.CreateThrowable(PythonExceptions.OSError, 9, "Bad file descriptor");
}
return PythonFile.Create(context, stream, stream.ToString(), mode);
}
[LightThrowing]
public static object fstat(CodeContext/*!*/ context, int fd) {
PythonContext pythonContext = PythonContext.GetContext(context);
PythonFile pf = pythonContext.FileManager.GetFileFromId(pythonContext, fd);
if (pf.IsConsole) {
return new stat_result(8192);
}
return lstat(pf.name);
}
public static void fsync(CodeContext context, int fd) {
PythonContext pythonContext = PythonContext.GetContext(context);
PythonFile pf = pythonContext.FileManager.GetFileFromId(pythonContext, fd);
if (!pf.IsOutput) {
throw PythonExceptions.CreateThrowable(PythonExceptions.OSError, 9, "Bad file descriptor");
}
try {
pf.FlushToDisk();
} catch (Exception ex) {
if (ex is ValueErrorException ||
ex is IOException) {
throw PythonExceptions.CreateThrowable(PythonExceptions.OSError, 9, "Bad file descriptor");
}
throw;
}
}
public static string getcwd(CodeContext/*!*/ context) {
return context.LanguageContext.DomainManager.Platform.CurrentDirectory;
}
public static string getcwdu(CodeContext/*!*/ context) {
return context.LanguageContext.DomainManager.Platform.CurrentDirectory;
}
public static string _getfullpathname(CodeContext/*!*/ context, [NotNull]string/*!*/ dir) {
PlatformAdaptationLayer pal = context.LanguageContext.DomainManager.Platform;
try {
return pal.GetFullPath(dir);
} catch (ArgumentException) {
// .NET validates the path, CPython doesn't... so we replace invalid chars with
// Char.Maxvalue, get the full path, and then replace the Char.Maxvalue's back w/
// their original value.
string newdir = dir;
if (IsWindows()) {
if (newdir.Length >= 2 && newdir[1] == ':' &&
(newdir[0] < 'a' || newdir[0] > 'z') && (newdir[0] < 'A' || newdir[0] > 'Z')) {
// invalid drive, .NET will reject this
if (newdir.Length == 2) {
return newdir + Path.DirectorySeparatorChar;
} else if (newdir[2] == Path.DirectorySeparatorChar) {
return newdir;
} else {
return newdir.Substring(0, 2) + Path.DirectorySeparatorChar + newdir.Substring(2);
}
}
if (newdir.Length > 2 && newdir.IndexOf(':', 2) != -1) {
// : is an invalid char if it's not in the 2nd position
newdir = newdir.Substring(0, 2) + newdir.Substring(2).Replace(':', Char.MaxValue);
}
if (newdir.Length > 0 && newdir[0] == ':') {
newdir = Char.MaxValue + newdir.Substring(1);
}
}
foreach (char c in Path.GetInvalidPathChars()) {
newdir = newdir.Replace(c, Char.MaxValue);
}
// walk backwards through the path replacing the same characters. We should have
// only updated the directory leaving the filename which we're fixing.
string res = pal.GetFullPath(newdir);
int curDir = dir.Length;
for (int curRes = res.Length - 1; curRes >= 0; curRes--) {
if (res[curRes] == Char.MaxValue) {
for (curDir--; curDir >= 0; curDir--) {
if (newdir[curDir] == Char.MaxValue) {
res = res.Substring(0, curRes) + dir[curDir] + res.Substring(curRes + 1);
break;
}
}
}
}
return res;
}
}
private static bool IsWindows() {
return Environment.OSVersion.Platform == PlatformID.Win32NT ||
Environment.OSVersion.Platform == PlatformID.Win32S ||
Environment.OSVersion.Platform == PlatformID.Win32Windows;
}
#if FEATURE_PROCESS
public static int getpid() {
return System.Diagnostics.Process.GetCurrentProcess().Id;
}
#endif
public static List listdir(CodeContext/*!*/ context, [NotNull]string path) {
if (path == String.Empty) {
path = ".";
}
List ret = PythonOps.MakeList();
try {
addBase(context.LanguageContext.DomainManager.Platform.GetFileSystemEntries(path, "*"), ret);
return ret;
} catch (Exception e) {
throw ToPythonException(e, path);
}
}
public static void lseek(CodeContext context, int filedes, long offset, int whence) {
PythonFile file = context.LanguageContext.FileManager.GetFileFromId(context.LanguageContext, filedes);
file.seek(offset, whence);
}
/// <summary>
/// lstat(path) -> stat result
/// Like stat(path), but do not follow symbolic links.
/// </summary>
[LightThrowing]
public static object lstat([BytesConversion]string path) {
// TODO: detect links
return stat(path);
}
#if FEATURE_FILESYSTEM
public static void mkdir(string path) {
if (Directory.Exists(path))
throw DirectoryExists();
try {
Directory.CreateDirectory(path);
} catch (Exception e) {
throw ToPythonException(e, path);
}
}
public static void mkdir(string path, int mode) {
if (Directory.Exists(path)) throw DirectoryExists();
// we ignore mode
try {
Directory.CreateDirectory(path);
} catch (Exception e) {
throw ToPythonException(e, path);
}
}
public static object open(CodeContext/*!*/ context, string filename, int flag) {
return open(context, filename, flag, 0777);
}
private const int DefaultBufferSize = 4096;
public static object open(CodeContext/*!*/ context, string filename, int flag, int mode) {
try {
FileMode fileMode = FileModeFromFlags(flag);
FileAccess access = FileAccessFromFlags(flag);
FileOptions options = FileOptionsFromFlags(flag);
Stream fs;
if (Environment.OSVersion.Platform == PlatformID.Win32NT && (String.Compare(filename, "nul", true) == 0)) {
fs = Stream.Null;
} else if (access == FileAccess.Read && (fileMode == FileMode.CreateNew || fileMode == FileMode.Create || fileMode == FileMode.Append)) {
// .NET doesn't allow Create/CreateNew w/ access == Read, so create the file, then close it, then
// open it again w/ just read access.
fs = new FileStream(filename, fileMode, FileAccess.Write, FileShare.None);
fs.Close();
fs = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite, DefaultBufferSize, options);
} else if (access == FileAccess.ReadWrite && fileMode == FileMode.Append) {
fs = new FileStream(filename, FileMode.Append, FileAccess.Write, FileShare.ReadWrite, DefaultBufferSize, options);
} else {
fs = new FileStream(filename, fileMode, access, FileShare.ReadWrite, DefaultBufferSize, options);
}
string mode2;
if (fs.CanRead && fs.CanWrite) mode2 = "w+";
else if (fs.CanWrite) mode2 = "w";
else mode2 = "r";
if ((flag & O_BINARY) != 0) {
mode2 += "b";
}
return PythonContext.GetContext(context).FileManager.AddToStrongMapping(PythonFile.Create(context, fs, filename, mode2));
} catch (Exception e) {
throw ToPythonException(e, filename);
}
}
private static FileOptions FileOptionsFromFlags(int flag) {
FileOptions res = FileOptions.None;
if ((flag & O_TEMPORARY) != 0) {
res |= FileOptions.DeleteOnClose;
}
if ((flag & O_RANDOM) != 0) {
res |= FileOptions.RandomAccess;
}
if ((flag & O_SEQUENTIAL) != 0) {
res |= FileOptions.SequentialScan;
}
return res;
}
#endif
#if FEATURE_PROCESS
public static PythonTuple pipe(CodeContext context) {
return PythonFile.CreatePipeAsFd(context);
}
public static PythonFile popen(CodeContext/*!*/ context, string command) {
return popen(context, command, "r");
}
public static PythonFile popen(CodeContext/*!*/ context, string command, string mode) {
return popen(context, command, mode, 4096);
}
public static PythonFile popen(CodeContext/*!*/ context, string command, string mode, int bufsize) {
if (String.IsNullOrEmpty(mode)) mode = "r";
ProcessStartInfo psi = GetProcessInfo(command, true);
psi.CreateNoWindow = true; // ipyw shouldn't create a new console window
Process p;
PythonFile res;
try {
switch (mode) {
case "r":
psi.RedirectStandardOutput = true;
p = Process.Start(psi);
res = new POpenFile(context, command, p, p.StandardOutput.BaseStream, "r");
break;
case "w":
psi.RedirectStandardInput = true;
p = Process.Start(psi);
res = new POpenFile(context, command, p, p.StandardInput.BaseStream, "w");
break;
default:
throw PythonOps.ValueError("expected 'r' or 'w' for mode, got {0}", mode);
}
} catch (Exception e) {
throw ToPythonException(e);
}
return res;
}
public static PythonTuple popen2(CodeContext/*!*/ context, string command) {
return popen2(context, command, "t");
}
public static PythonTuple popen2(CodeContext/*!*/ context, string command, string mode) {
return popen2(context, command, "t", 4096);
}
public static PythonTuple popen2(CodeContext/*!*/ context, string command, string mode, int bufsize) {
if (String.IsNullOrEmpty(mode)) mode = "t";
if (mode != "t" && mode != "b") throw PythonOps.ValueError("mode must be 't' or 'b' (default is t)");
if (mode == "t") mode = String.Empty;
try {
ProcessStartInfo psi = GetProcessInfo(command, true);
psi.RedirectStandardInput = true;
psi.RedirectStandardOutput = true;
psi.CreateNoWindow = true; // ipyw shouldn't create a new console window
Process p = Process.Start(psi);
return PythonTuple.MakeTuple(new POpenFile(context, command, p, p.StandardInput.BaseStream, "w" + mode),
new POpenFile(context, command, p, p.StandardOutput.BaseStream, "r" + mode));
} catch (Exception e) {
throw ToPythonException(e);
}
}
public static PythonTuple popen3(CodeContext/*!*/ context, string command) {
return popen3(context, command, "t");
}
public static PythonTuple popen3(CodeContext/*!*/ context, string command, string mode) {
return popen3(context, command, "t", 4096);
}
public static PythonTuple popen3(CodeContext/*!*/ context, string command, string mode, int bufsize) {
if (String.IsNullOrEmpty(mode)) mode = "t";
if (mode != "t" && mode != "b") throw PythonOps.ValueError("mode must be 't' or 'b' (default is t)");
if (mode == "t") mode = String.Empty;
try {
ProcessStartInfo psi = GetProcessInfo(command, true);
psi.RedirectStandardInput = true;
psi.RedirectStandardOutput = true;
psi.RedirectStandardError = true;
psi.CreateNoWindow = true; // ipyw shouldn't create a new console window
Process p = Process.Start(psi);
return PythonTuple.MakeTuple(new POpenFile(context, command, p, p.StandardInput.BaseStream, "w" + mode),
new POpenFile(context, command, p, p.StandardOutput.BaseStream, "r" + mode),
new POpenFile(context, command, p, p.StandardError.BaseStream, "r+" + mode));
} catch (Exception e) {
throw ToPythonException(e);
}
}
public static void putenv(string varname, string value) {
try {
System.Environment.SetEnvironmentVariable(varname, value);
} catch (Exception e) {
throw ToPythonException(e);
}
}
#endif
public static string read(CodeContext/*!*/ context, int fd, int buffersize) {
if (buffersize < 0) {
throw PythonExceptions.CreateThrowable(PythonExceptions.OSError, PythonErrorNumber.EINVAL, "Invalid argument");
}
try {
PythonContext pythonContext = PythonContext.GetContext(context);
PythonFile pf = pythonContext.FileManager.GetFileFromId(pythonContext, fd);
return pf.read(buffersize);
} catch (Exception e) {
throw ToPythonException(e);
}
}
public static void rename(string src, string dst) {
try {
Directory.Move(src, dst);
} catch (Exception e) {
throw ToPythonException(e);
}
}
public static void rmdir(string path) {
try {
Directory.Delete(path);
} catch (Exception e) {
throw ToPythonException(e, path);
}
}
#if FEATURE_PROCESS
/// <summary>
/// spawns a new process.
///
/// If mode is nt.P_WAIT then then the call blocks until the process exits and the return value
/// is the exit code.
///
/// Otherwise the call returns a handle to the process. The caller must then call nt.waitpid(pid, options)
/// to free the handle and get the exit code of the process. Failure to call nt.waitpid will result
/// in a handle leak.
/// </summary>
public static object spawnl(CodeContext/*!*/ context, int mode, string path, params object[] args) {
return SpawnProcessImpl(context, MakeProcess(), mode, path, args);
}
/// <summary>
/// spawns a new process.
///
/// If mode is nt.P_WAIT then then the call blocks until the process exits and the return value
/// is the exit code.
///
/// Otherwise the call returns a handle to the process. The caller must then call nt.waitpid(pid, options)
/// to free the handle and get the exit code of the process. Failure to call nt.waitpid will result
/// in a handle leak.
/// </summary>
public static object spawnle(CodeContext/*!*/ context, int mode, string path, params object[] args) {
if (args.Length < 1) {
throw PythonOps.TypeError("spawnle() takes at least three arguments ({0} given)", 2 + args.Length);
}
object env = args[args.Length - 1];
object[] slicedArgs = ArrayUtils.RemoveFirst(args);
Process process = MakeProcess();
SetEnvironment(process.StartInfo.EnvironmentVariables, env);
return SpawnProcessImpl(context, process, mode, path, slicedArgs);
}
/// <summary>
/// spawns a new process.
///
/// If mode is nt.P_WAIT then then the call blocks until the process exits and the return value
/// is the exit code.
///
/// Otherwise the call returns a handle to the process. The caller must then call nt.waitpid(pid, options)
/// to free the handle and get the exit code of the process. Failure to call nt.waitpid will result
/// in a handle leak.
/// </summary>
public static object spawnv(CodeContext/*!*/ context, int mode, string path, object args) {
return SpawnProcessImpl(context, MakeProcess(), mode, path, args);
}
/// <summary>
/// spawns a new process.
///
/// If mode is nt.P_WAIT then then the call blocks until the process exits and the return value
/// is the exit code.
///
/// Otherwise the call returns a handle to the process. The caller must then call nt.waitpid(pid, options)
/// to free the handle and get the exit code of the process. Failure to call nt.waitpid will result
/// in a handle leak.
/// </summary>
public static object spawnve(CodeContext/*!*/ context, int mode, string path, object args, object env) {
Process process = MakeProcess();
SetEnvironment(process.StartInfo.EnvironmentVariables, env);
return SpawnProcessImpl(context, process, mode, path, args);
}
private static Process MakeProcess() {
try {
return new Process();
} catch (Exception e) {
throw ToPythonException(e);
}
}
private static object SpawnProcessImpl(CodeContext/*!*/ context, Process process, int mode, string path, object args) {
try {
process.StartInfo.Arguments = ArgumentsToString(context, args);
process.StartInfo.FileName = path;
process.StartInfo.UseShellExecute = false;
} catch (Exception e) {
throw ToPythonException(e, path);
}
if (!process.Start()) {
throw PythonOps.OSError("Cannot start process: {0}", path);
}
if (mode == P_WAIT) {
process.WaitForExit();
int exitCode = process.ExitCode;
process.Close();
return exitCode;
}
lock (_processToIdMapping) {
int id;
if (_freeProcessIds.Count > 0) {
id = _freeProcessIds[_freeProcessIds.Count - 1];
_freeProcessIds.RemoveAt(_freeProcessIds.Count - 1);
} else {
// process IDs are handles on CPython/Win32 so we match
// that behavior and return something that is handle like. Handles
// on NT are guaranteed to have the low 2 bits not set and users
// could use these for their own purposes. We therefore match that
// behavior here.
_processCount += 4;
id = _processCount;
}
_processToIdMapping[id] = process;
return ScriptingRuntimeHelpers.Int32ToObject(id);
}
}
/// <summary>
/// Copy elements from a Python mapping of dict environment variables to a StringDictionary.
/// </summary>
private static void SetEnvironment(System.Collections.Specialized.StringDictionary currentEnvironment, object newEnvironment) {
PythonDictionary env = newEnvironment as PythonDictionary;
if (env == null) {
throw PythonOps.TypeError("env argument must be a dict");
}
currentEnvironment.Clear();
string strKey, strValue;
foreach (object key in env.keys()) {
if (!Converter.TryConvertToString(key, out strKey)) {
throw PythonOps.TypeError("env dict contains a non-string key");
}
if (!Converter.TryConvertToString(env[key], out strValue)) {
throw PythonOps.TypeError("env dict contains a non-string value");
}
currentEnvironment[strKey] = strValue;
}
}
#endif
/// <summary>
/// Convert a sequence of args to a string suitable for using to spawn a process.
/// </summary>
private static string ArgumentsToString(CodeContext/*!*/ context, object args) {
IEnumerator argsEnumerator;
System.Text.StringBuilder sb = null;
if (!PythonOps.TryGetEnumerator(context, args, out argsEnumerator)) {
throw PythonOps.TypeError("args parameter must be sequence, not {0}", DynamicHelpers.GetPythonType(args));
}
bool space = false;
try {
// skip the first element, which is the name of the command being run
argsEnumerator.MoveNext();
while (argsEnumerator.MoveNext()) {
if (sb == null) sb = new System.Text.StringBuilder(); // lazy creation
string strarg = PythonOps.ToString(argsEnumerator.Current);
if (space) {
sb.Append(' ');
}
if (strarg.IndexOf(' ') != -1) {
sb.Append('"');
// double quote any existing quotes
sb.Append(strarg.Replace("\"", "\"\""));
sb.Append('"');
} else {
sb.Append(strarg);
}
space = true;
}
} finally {
IDisposable disposable = argsEnumerator as IDisposable;
if (disposable != null) disposable.Dispose();
}
if (sb == null) return "";
return sb.ToString();
}
#if FEATURE_PROCESS
public static void startfile(string filename, [DefaultParameterValue("open")]string operation) {
System.Diagnostics.Process process = new System.Diagnostics.Process();
process.StartInfo.FileName = filename;
process.StartInfo.UseShellExecute = true;
process.StartInfo.Verb = operation;
try {
process.Start();
} catch (Exception e) {
throw ToPythonException(e, filename);
}
}
#endif
[PythonType, DontMapIEnumerableToIter]
public class stat_result : IList, IList<object> {
private readonly object _mode, _size, _atime, _mtime, _ctime, _st_atime, _st_mtime, _st_ctime, _ino, _dev, _nlink, _uid, _gid;
public const int n_fields = 13;
public const int n_sequence_fields = 10;
public const int n_unnamed_fields = 3;
internal stat_result(int mode) : this(mode, BigInteger.Zero, BigInteger.Zero, BigInteger.Zero, BigInteger.Zero) {
_mode = mode;
}
internal stat_result(int mode, BigInteger size, BigInteger st_atime, BigInteger st_mtime, BigInteger st_ctime) {
_mode = mode;
_size = size;
_st_atime = _atime = TryShrinkToInt(st_atime);
_st_mtime = _mtime = TryShrinkToInt(st_mtime);
_st_ctime = _ctime = TryShrinkToInt(st_ctime);
_ino = _dev = _nlink = _uid = _gid = ScriptingRuntimeHelpers.Int32ToObject(0);
}
public stat_result(CodeContext/*!*/ context, IList statResult, [DefaultParameterValue(null)]PythonDictionary dict) {
// dict is allowed by CPython's stat_result, but doesn't seem to do anything, so we ignore it here.
if (statResult.Count < 10) {
throw PythonOps.TypeError("stat_result() takes an at least 10-sequence ({0}-sequence given)", statResult.Count);
}
_mode = statResult[0];
_ino = statResult[1];
_dev = statResult[2];
_nlink = statResult[3];
_uid = statResult[4];
_gid = statResult[5];
_size = statResult[6];
_atime = statResult[7];
_mtime = statResult[8];
_ctime = statResult[9];
object dictTime;
if (statResult.Count >= 11) {
_st_atime = TryShrinkToInt(statResult[10]);
} else if (TryGetDictValue(dict, "st_atime", out dictTime)) {
_st_atime = dictTime;
} else {
_st_atime = TryShrinkToInt(_atime);
}
if (statResult.Count >= 12) {
_st_mtime = TryShrinkToInt(statResult[11]);
} else if (TryGetDictValue(dict, "st_mtime", out dictTime)) {
_st_mtime = dictTime;
} else {
_st_mtime = TryShrinkToInt(_mtime);
}
if (statResult.Count >= 13) {
_st_ctime = TryShrinkToInt(statResult[12]);
} else if (TryGetDictValue(dict, "st_ctime", out dictTime)) {
_st_ctime = dictTime;
} else {
_st_ctime = TryShrinkToInt(_ctime);
}
}
private static bool TryGetDictValue(PythonDictionary dict, string name, out object dictTime) {
if (dict != null && dict.TryGetValue(name, out dictTime)) {
dictTime = TryShrinkToInt(dictTime);
return true;
}
dictTime = null;
return false;
}
private static object TryShrinkToInt(object value) {
if (!(value is BigInteger)) {
return value;
}
return BigIntegerOps.__int__((BigInteger)value);
}
public object st_atime {
get {
return _st_atime;
}
}
public object st_ctime {
get {
return _st_ctime;
}
}
public object st_mtime {
get {
return _st_mtime;
}
}
public object st_dev {
get {
return TryShrinkToInt(_dev);
}
}
public object st_gid {
get {
return _gid;
}
}
public object st_ino {
get {
return _ino;
}
}
public object st_mode {
get {
return TryShrinkToInt(_mode);
}
}
public object st_nlink {
get {
return TryShrinkToInt(_nlink);
}
}
public object st_size {
get {
return _size;
}
}
public object st_uid {
get {
return _uid;
}
}
public static PythonTuple operator +(stat_result stat, object tuple) {
PythonTuple tupleObj = tuple as PythonTuple;
if (tupleObj == null) {
throw PythonOps.TypeError("can only concatenate tuple (not \"{0}\") to tuple", PythonTypeOps.GetName(tuple));
}
return stat.MakeTuple() + tupleObj;
}
public static bool operator >(stat_result stat, [NotNull]stat_result o) {
return stat.MakeTuple() > PythonTuple.Make(o);
}
public static bool operator <(stat_result stat, [NotNull]stat_result o) {
return stat.MakeTuple() < PythonTuple.Make(o);
}
public static bool operator >=(stat_result stat, [NotNull]stat_result o) {
return stat.MakeTuple() >= PythonTuple.Make(o);
}
public static bool operator <=(stat_result stat, [NotNull]stat_result o) {
return stat.MakeTuple() <= PythonTuple.Make(o);
}
public static bool operator >(stat_result stat, object o) {
return true;
}
public static bool operator <(stat_result stat, object o) {
return false;
}
public static bool operator >=(stat_result stat, object o) {
return true;
}
public static bool operator <=(stat_result stat, object o) {
return false;
}
public static PythonTuple operator *(stat_result stat, int size) {
return stat.MakeTuple() * size;
}
public static PythonTuple operator *(int size, stat_result stat) {
return stat.MakeTuple() * size;
}
public override string ToString() {
return MakeTuple().ToString();
}