The Tor Browser: ipc/chromium/src/base/command_line.h@6474c204b198 (annotated)

ipc/chromium/src/base/command_line.h@6474c204b198 (annotated)

ipc/chromium/src/base/command_line.h

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 // Copyright (c) 2006-2008 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.
 // Switches can optionally have a value attached using an equals sign,
 // as in "-switch=value".  Arguments that aren't prefixed with a
 // switch prefix are considered "loose parameters".  Switch names are
 // case-insensitive.  An argument of "--" will terminate switch
 // parsing, causing everything after to be considered as loose
 // parameters.
 // 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() (or whatever the platform's equivalent function is).
 #ifndef BASE_COMMAND_LINE_H_
 #define BASE_COMMAND_LINE_H_
 #include "build/build_config.h"
 #include <map>
 #include <string>
 #include <vector>
 #include "base/basictypes.h"
 #include "base/logging.h"
 class InProcessBrowserTest;
 class CommandLine {
  public:
 #if defined(OS_WIN)
   // Creates a parsed version of 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);
 #elif defined(OS_POSIX)
   // Initialize from an argv vector (or directly from main()'s argv).
   CommandLine(int argc, const char* const* argv);
   explicit CommandLine(const std::vector<std::string>& argv);
 #endif
   // Construct a new, empty command line.
   // |program| is the name of the program to run (aka argv[0]).
   // TODO(port): should be a FilePath.
   explicit CommandLine(const std::wstring& program);
   // 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.
   static void 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, e.g. in main(), calling Terminate() is not
   // necessary.
   static void Terminate();
   // Get the singleton CommandLine representing the current process's
   // command line.
   static const CommandLine* ForCurrentProcess() {
     DCHECK(current_process_commandline_);
     return current_process_commandline_;
   }
   static bool IsInitialized() {
     return !!current_process_commandline_;
   }
   // Returns true if this command line contains the given switch.
   // (Switch names are case-insensitive.)
   bool HasSwitch(const std::wstring& 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::wstring GetSwitchValue(const std::wstring& switch_string) const;
   // Get the remaining arguments to the command.
   // WARNING: this is incorrect on POSIX; we must do string conversions.
   std::vector<std::wstring> GetLooseValues() const;
 #if defined(OS_WIN)
   // Returns the original command line string.
   const std::wstring& command_line_string() const {
     return command_line_string_;
   }
 #elif defined(OS_POSIX)
   // Returns the original command line string as a vector of strings.
   const std::vector<std::string>& argv() const {
     return argv_;
   }
 #endif
   // Returns the program part of the command line string (the first item).
   std::wstring program() const;
   // Return a copy of the string prefixed with a switch prefix.
   // Used internally.
   static std::wstring PrefixedSwitchString(const std::wstring& switch_string);
   // Return a copy of the string prefixed with a switch prefix,
   // and appended with the given value. Used internally.
   static std::wstring PrefixedSwitchStringWithValue(
                         const std::wstring& switch_string,
                         const std::wstring& value_string);
   // Appends the given switch string (preceded by a space and a switch
   // prefix) to the given string.
   void AppendSwitch(const std::wstring& switch_string);
   // Appends the given switch string (preceded by a space and a switch
   // prefix) to the given string, with the given value attached.
   void AppendSwitchWithValue(const std::wstring& switch_string,
                              const std::wstring& value_string);
   // Append a loose value to the command line.
   void AppendLooseValue(const std::wstring& value);
   // Append the 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);
   // On POSIX systems it's common to run processes via a wrapper (like
   // "valgrind" or "gdb --args").
   void PrependWrapper(const std::wstring& wrapper);
  private:
   friend class InProcessBrowserTest;
   CommandLine() {}
   // Used by InProcessBrowserTest.
   static CommandLine* ForCurrentProcessMutable() {
     DCHECK(current_process_commandline_);
     return current_process_commandline_;
   }
   // The singleton CommandLine instance representing the current process's
   // command line.
   static CommandLine* current_process_commandline_;
   // We store a platform-native version of the command line, used when building
   // up a new command line to be executed.  This ifdef delimits that code.
 #if defined(OS_WIN)
   // The quoted, space-separated command-line string.
   std::wstring command_line_string_;
   // The name of the program.
   std::wstring program_;
   // The type of native command line arguments.
   typedef std::wstring StringType;
 #elif defined(OS_POSIX)
   // The argv array, with the program name in argv_[0].
   std::vector<std::string> argv_;
   // The type of native command line arguments.
   typedef std::string StringType;
   // Shared by the two POSIX constructor forms.  Initalize from argv_.
   void InitFromArgv();
 #endif
   // Returns true and fills in |switch_string| and |switch_value|
   // if |parameter_string| represents a switch.
   static bool IsSwitch(const StringType& parameter_string,
                        std::string* switch_string,
                        StringType* switch_value);
   // Parsed-out values.
   std::map<std::string, StringType> switches_;
   // Non-switch command-line arguments.
   std::vector<StringType> loose_values_;
   // We allow copy constructors, because a common pattern is to grab a
   // copy of the current process's command line and then add some
   // flags to it.  E.g.:
   //   CommandLine cl(*CommandLine::ForCurrentProcess());
   //   cl.AppendSwitch(...);
 };
 #endif  // BASE_COMMAND_LINE_H_

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ipc/chromium/src/base/command_line.h@6474c204b198 (annotated)

ipc/chromium/src/base/command_line.h