The Tor Browser: comparison security/sandbox/chromium/base/command

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+:affee7bd569f
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+// This class works with command lines: building and parsing.
+// Arguments with prefixes ('--', '-', and on Windows, '/') are switches.
+// Switches will precede all other arguments without switch prefixes.
+// Switches can optionally have values, delimited by '=', e.g., "-switch=value".
+// An argument of "--" will terminate switch parsing during initialization,
+// interpreting subsequent tokens as non-switch arguments, regardless of prefix.
+// There is a singleton read-only CommandLine that represents the command line
+// that the current process was started with.  It must be initialized in main().
+#ifndef BASE_COMMAND_LINE_H_
+#define BASE_COMMAND_LINE_H_
+#include <stddef.h>
+#include <map>
+#include <string>
+#include <vector>
+#include "base/base_export.h"
+#include "build/build_config.h"
+namespace base {
+class FilePath;
+}
+class BASE_EXPORT CommandLine {
+public:
+#if defined(OS_WIN)
+// The native command line string type.
+typedef std::wstring StringType;
+#elif defined(OS_POSIX)
+typedef std::string StringType;
+#endif
+typedef StringType::value_type CharType;
+typedef std::vector<StringType> StringVector;
+typedef std::map<std::string, StringType> SwitchMap;
+// A constructor for CommandLines that only carry switches and arguments.
+enum NoProgram { NO_PROGRAM };
+explicit CommandLine(NoProgram no_program);
+// Construct a new command line with |program| as argv[0].
+explicit CommandLine(const base::FilePath& program);
+// Construct a new command line from an argument list.
+CommandLine(int argc, const CharType* const* argv);
+explicit CommandLine(const StringVector& argv);
+~CommandLine();
+// Initialize the current process CommandLine singleton. On Windows, ignores
+// its arguments (we instead parse GetCommandLineW() directly) because we
+// don't trust the CRT's parsing of the command line, but it still must be
+// called to set up the command line. Returns false if initialization has
+// already occurred, and true otherwise. Only the caller receiving a 'true'
+// return value should take responsibility for calling Reset.
+static bool Init(int argc, const char* const* argv);
+// Destroys the current process CommandLine singleton. This is necessary if
+// you want to reset the base library to its initial state (for example, in an
+// outer library that needs to be able to terminate, and be re-initialized).
+// If Init is called only once, as in main(), Reset() is not necessary.
+static void Reset();
+// Get the singleton CommandLine representing the current process's
+// command line. Note: returned value is mutable, but not thread safe;
+// only mutate if you know what you're doing!
+static CommandLine* ForCurrentProcess();
+// Returns true if the CommandLine has been initialized for the given process.
+static bool InitializedForCurrentProcess();
+#if defined(OS_WIN)
+static CommandLine FromString(const std::wstring& command_line);
+#endif
+// Initialize from an argv vector.
+void InitFromArgv(int argc, const CharType* const* argv);
+void InitFromArgv(const StringVector& argv);
+// Constructs and returns the represented command line string.
+// CAUTION! This should be avoided on POSIX because quoting behavior is
+// unclear.
+StringType GetCommandLineString() const;
+// Constructs and returns the represented arguments string.
+// CAUTION! This should be avoided on POSIX because quoting behavior is
+// unclear.
+StringType GetArgumentsString() const;
+// Returns the original command line string as a vector of strings.
+const StringVector& argv() const { return argv_; }
+// Get and Set the program part of the command line string (the first item).
+base::FilePath GetProgram() const;
+void SetProgram(const base::FilePath& program);
+// Returns true if this command line contains the given switch.
+// (Switch names are case-insensitive).
+bool HasSwitch(const std::string& switch_string) const;
+// Returns the value associated with the given switch. If the switch has no
+// value or isn't present, this method returns the empty string.
+std::string GetSwitchValueASCII(const std::string& switch_string) const;
+base::FilePath GetSwitchValuePath(const std::string& switch_string) const;
+StringType GetSwitchValueNative(const std::string& switch_string) const;
+// Get a copy of all switches, along with their values.
+const SwitchMap& GetSwitches() const { return switches_; }
+// Append a switch [with optional value] to the command line.
+// Note: Switches will precede arguments regardless of appending order.
+void AppendSwitch(const std::string& switch_string);
+void AppendSwitchPath(const std::string& switch_string,
+const base::FilePath& path);
+void AppendSwitchNative(const std::string& switch_string,
+const StringType& value);
+void AppendSwitchASCII(const std::string& switch_string,
+const std::string& value);
+// Copy a set of switches (and any values) from another command line.
+// Commonly used when launching a subprocess.
+void CopySwitchesFrom(const CommandLine& source,
+const char* const switches[],
+size_t count);
+// Get the remaining arguments to the command.
+StringVector GetArgs() const;
+// Append an argument to the command line. Note that the argument is quoted
+// properly such that it is interpreted as one argument to the target command.
+// AppendArg is primarily for ASCII; non-ASCII input is interpreted as UTF-8.
+// Note: Switches will precede arguments regardless of appending order.
+void AppendArg(const std::string& value);
+void AppendArgPath(const base::FilePath& value);
+void AppendArgNative(const StringType& value);
+// Append the switches and arguments from another command line to this one.
+// If |include_program| is true, include |other|'s program as well.
+void AppendArguments(const CommandLine& other, bool include_program);
+// Insert a command before the current command.
+// Common for debuggers, like "valgrind" or "gdb --args".
+void PrependWrapper(const StringType& wrapper);
+#if defined(OS_WIN)
+// Initialize by parsing the given command line string.
+// The program name is assumed to be the first item in the string.
+void ParseFromString(const std::wstring& command_line);
+#endif
+private:
+// Disallow default constructor; a program name must be explicitly specified.
+CommandLine();
+// Allow the copy constructor. A common pattern is to copy of the current
+// process's command line and then add some flags to it. For example:
+//   CommandLine cl(*CommandLine::ForCurrentProcess());
+//   cl.AppendSwitch(...);
+// The singleton CommandLine representing the current process's command line.
+static CommandLine* current_process_commandline_;
+// The argv array: { program, [(--|-|/)switch[=value]]*, [--], [argument]* }
+StringVector argv_;
+// Parsed-out switch keys and values.
+SwitchMap switches_;
+// The index after the program and switches, any arguments start here.
+size_t begin_args_;
+};
+#endif  // BASE_COMMAND_LINE_H_

The Tor Browser / file comparison

comparison: security/sandbox/chromium/base/command_line.h

security/sandbox/chromium/base/command_line.h