The Tor Browser: comparison ipc/chromium/src/base/command

--1:000000000000
+:82069e64bb3c
+// 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.
+#include "base/command_line.h"
+#if defined(OS_WIN)
+#include <windows.h>
+#include <shellapi.h>
+#endif
+#include <algorithm>
+#include "base/logging.h"
+#include "base/singleton.h"
+#include "base/string_piece.h"
+#include "base/string_util.h"
+#include "base/sys_string_conversions.h"
+CommandLine* CommandLine::current_process_commandline_ = NULL;
+// Since we use a lazy match, make sure that longer versions (like L"--")
+// are listed before shorter versions (like L"-") of similar prefixes.
+#if defined(OS_WIN)
+const wchar_t* const kSwitchPrefixes[] = {L"--", L"-", L"/"};
+const wchar_t kSwitchTerminator[] = L"--";
+const wchar_t kSwitchValueSeparator[] = L"=";
+#elif defined(OS_POSIX)
+// Unixes don't use slash as a switch.
+const char* const kSwitchPrefixes[] = {"--", "-"};
+const char kSwitchTerminator[] = "--";
+const char kSwitchValueSeparator[] = "=";
+#endif
+#if defined(OS_WIN)
+// Lowercase a string.  This is used to lowercase switch names.
+// Is this what we really want?  It seems crazy to me.  I've left it in
+// for backwards compatibility on Windows.
+static void Lowercase(std::wstring* parameter) {
+transform(parameter->begin(), parameter->end(), parameter->begin(),
+tolower);
+}
+#endif
+#if defined(OS_WIN)
+void CommandLine::ParseFromString(const std::wstring& command_line) {
+TrimWhitespace(command_line, TRIM_ALL, &command_line_string_);
+if (command_line_string_.empty())
+return;
+int num_args = 0;
+wchar_t** args = NULL;
+args = CommandLineToArgvW(command_line_string_.c_str(), &num_args);
+// Populate program_ with the trimmed version of the first arg.
+TrimWhitespace(args[0], TRIM_ALL, &program_);
+bool parse_switches = true;
+for (int i = 1; i < num_args; ++i) {
+std::wstring arg;
+TrimWhitespace(args[i], TRIM_ALL, &arg);
+if (!parse_switches) {
+loose_values_.push_back(arg);
+continue;
+}
+if (arg == kSwitchTerminator) {
+parse_switches = false;
+continue;
+}
+std::string switch_string;
+std::wstring switch_value;
+if (IsSwitch(arg, &switch_string, &switch_value)) {
+switches_[switch_string] = switch_value;
+} else {
+loose_values_.push_back(arg);
+}
+}
+if (args)
+LocalFree(args);
+}
+CommandLine::CommandLine(const std::wstring& program) {
+if (!program.empty()) {
+program_ = program;
+command_line_string_ = L'"' + program + L'"';
+}
+}
+#elif defined(OS_POSIX)
+CommandLine::CommandLine(int argc, const char* const* argv) {
+for (int i = 0; i < argc; ++i)
+argv_.push_back(argv[i]);
+InitFromArgv();
+}
+CommandLine::CommandLine(const std::vector<std::string>& argv) {
+argv_ = argv;
+InitFromArgv();
+}
+void CommandLine::InitFromArgv() {
+bool parse_switches = true;
+for (size_t i = 1; i < argv_.size(); ++i) {
+const std::string& arg = argv_[i];
+if (!parse_switches) {
+loose_values_.push_back(arg);
+continue;
+}
+if (arg == kSwitchTerminator) {
+parse_switches = false;
+continue;
+}
+std::string switch_string;
+std::string switch_value;
+if (IsSwitch(arg, &switch_string, &switch_value)) {
+switches_[switch_string] = switch_value;
+} else {
+loose_values_.push_back(arg);
+}
+}
+}
+CommandLine::CommandLine(const std::wstring& program) {
+argv_.push_back(WideToASCII(program));
+}
+#endif
+// static
+bool CommandLine::IsSwitch(const StringType& parameter_string,
+std::string* switch_string,
+StringType* switch_value) {
+switch_string->clear();
+switch_value->clear();
+for (size_t i = 0; i < arraysize(kSwitchPrefixes); ++i) {
+StringType prefix(kSwitchPrefixes[i]);
+if (parameter_string.find(prefix) != 0)
+continue;
+const size_t switch_start = prefix.length();
+const size_t equals_position = parameter_string.find(
+kSwitchValueSeparator, switch_start);
+StringType switch_native;
+if (equals_position == StringType::npos) {
+switch_native = parameter_string.substr(switch_start);
+} else {
+switch_native = parameter_string.substr(
+switch_start, equals_position - switch_start);
+*switch_value = parameter_string.substr(equals_position + 1);
+}
+#if defined(OS_WIN)
+Lowercase(&switch_native);
+*switch_string = WideToASCII(switch_native);
+#else
+*switch_string = switch_native;
+#endif
+return true;
+}
+return false;
+}
+// static
+void CommandLine::Init(int argc, const char* const* argv) {
+DCHECK(current_process_commandline_ == NULL);
+#if defined(OS_WIN)
+current_process_commandline_ = new CommandLine;
+current_process_commandline_->ParseFromString(::GetCommandLineW());
+#elif defined(OS_POSIX)
+current_process_commandline_ = new CommandLine(argc, argv);
+#endif
+}
+void CommandLine::Terminate() {
+DCHECK(current_process_commandline_ != NULL);
+delete current_process_commandline_;
+current_process_commandline_ = NULL;
+}
+bool CommandLine::HasSwitch(const std::wstring& switch_string) const {
+std::wstring lowercased_switch(switch_string);
+#if defined(OS_WIN)
+Lowercase(&lowercased_switch);
+#endif
+return switches_.find(WideToASCII(lowercased_switch)) != switches_.end();
+}
+std::wstring CommandLine::GetSwitchValue(
+const std::wstring& switch_string) const {
+std::wstring lowercased_switch(switch_string);
+#if defined(OS_WIN)
+Lowercase(&lowercased_switch);
+#endif
+std::map<std::string, StringType>::const_iterator result =
+switches_.find(WideToASCII(lowercased_switch));
+if (result == switches_.end()) {
+return L"";
+} else {
+#if defined(OS_WIN)
+return result->second;
+#else
+return ASCIIToWide(result->second);
+#endif
+}
+}
+#if defined(OS_WIN)
+std::vector<std::wstring> CommandLine::GetLooseValues() const {
+return loose_values_;
+}
+std::wstring CommandLine::program() const {
+return program_;
+}
+#else
+std::vector<std::wstring> CommandLine::GetLooseValues() const {
+std::vector<std::wstring> values;
+for (size_t i = 0; i < loose_values_.size(); ++i)
+values.push_back(ASCIIToWide(loose_values_[i]));
+return values;
+}
+std::wstring CommandLine::program() const {
+DCHECK(argv_.size() > 0);
+return ASCIIToWide(argv_[0]);
+}
+#endif
+// static
+std::wstring CommandLine::PrefixedSwitchString(
+const std::wstring& switch_string) {
+return StringPrintf(L"%ls%ls",
+kSwitchPrefixes[0],
+switch_string.c_str());
+}
+// static
+std::wstring CommandLine::PrefixedSwitchStringWithValue(
+const std::wstring& switch_string, const std::wstring& value_string) {
+if (value_string.empty()) {
+return PrefixedSwitchString(switch_string);
+}
+return StringPrintf(L"%ls%ls%ls%ls",
+kSwitchPrefixes[0],
+switch_string.c_str(),
+kSwitchValueSeparator,
+value_string.c_str());
+}
+#if defined(OS_WIN)
+void CommandLine::AppendSwitch(const std::wstring& switch_string) {
+std::wstring prefixed_switch_string = PrefixedSwitchString(switch_string);
+command_line_string_.append(L" ");
+command_line_string_.append(prefixed_switch_string);
+switches_[WideToASCII(switch_string)] = L"";
+}
+// Quote a string if necessary, such that CommandLineToArgvW() will
+// always process it as a single argument.
+static std::wstring WindowsStyleQuote(const std::wstring& arg) {
+// We follow the quoting rules of CommandLineToArgvW.
+// http://msdn.microsoft.com/en-us/library/17w5ykft.aspx
+if (arg.find_first_of(L" \\\"\t") == std::wstring::npos) {
+// No quoting necessary.
+return arg;
+}
+std::wstring out;
+out.push_back(L'"');
+for (size_t i = 0; i < arg.size(); ++i) {
+if (arg[i] == '\\') {
+// Find the extent of this run of backslashes.
+size_t start = i, end = start + 1;
+for (; end < arg.size() && arg[end] == '\\'; ++end)
+/* empty */;
+size_t backslash_count = end - start;
+// Backslashes are escapes only if the run is followed by a double quote.
+// Since we also will end the string with a double quote, we escape for
+// either a double quote or the end of the string.
+if (end == arg.size() || arg[end] == '"') {
+// To quote, we need to output 2x as many backslashes.
+backslash_count *= 2;
+}
+for (size_t j = 0; j < backslash_count; ++j)
+out.push_back('\\');
+// Advance i to one before the end to balance i++ in loop.
+i = end - 1;
+} else if (arg[i] == '"') {
+out.push_back('\\');
+out.push_back('"');
+} else {
+out.push_back(arg[i]);
+}
+}
+out.push_back('"');
+return out;
+}
+void CommandLine::AppendSwitchWithValue(const std::wstring& switch_string,
+const std::wstring& value_string) {
+std::wstring quoted_value_string = WindowsStyleQuote(value_string);
+std::wstring combined_switch_string =
+PrefixedSwitchStringWithValue(switch_string, quoted_value_string);
+command_line_string_.append(L" ");
+command_line_string_.append(combined_switch_string);
+switches_[WideToASCII(switch_string)] = value_string;
+}
+void CommandLine::AppendLooseValue(const std::wstring& value) {
+command_line_string_.append(L" ");
+command_line_string_.append(WindowsStyleQuote(value));
+}
+void CommandLine::AppendArguments(const CommandLine& other,
+bool include_program) {
+// Verify include_program is used correctly.
+// Logic could be shorter but this is clearer.
+DCHECK(include_program ? !other.program().empty() : other.program().empty());
+command_line_string_ += L" " + other.command_line_string_;
+std::map<std::string, StringType>::const_iterator i;
+for (i = other.switches_.begin(); i != other.switches_.end(); ++i)
+switches_[i->first] = i->second;
+}
+void CommandLine::PrependWrapper(const std::wstring& wrapper) {
+// The wrapper may have embedded arguments (like "gdb --args"). In this case,
+// we don't pretend to do anything fancy, we just split on spaces.
+std::vector<std::wstring> wrapper_and_args;
+SplitString(wrapper, ' ', &wrapper_and_args);
+program_ = wrapper_and_args[0];
+command_line_string_ = wrapper + L" " + command_line_string_;
+}
+#elif defined(OS_POSIX)
+void CommandLine::AppendSwitch(const std::wstring& switch_string) {
+std::string ascii_switch = WideToASCII(switch_string);
+argv_.push_back(kSwitchPrefixes[0] + ascii_switch);
+switches_[ascii_switch] = "";
+}
+void CommandLine::AppendSwitchWithValue(const std::wstring& switch_string,
+const std::wstring& value_string) {
+std::string ascii_switch = WideToASCII(switch_string);
+std::string ascii_value = WideToASCII(value_string);
+argv_.push_back(kSwitchPrefixes[0] + ascii_switch +
+kSwitchValueSeparator + ascii_value);
+switches_[ascii_switch] = ascii_value;
+}
+void CommandLine::AppendLooseValue(const std::wstring& value) {
+argv_.push_back(WideToASCII(value));
+}
+void CommandLine::AppendArguments(const CommandLine& other,
+bool include_program) {
+// Verify include_program is used correctly.
+// Logic could be shorter but this is clearer.
+DCHECK(include_program ? !other.program().empty() : other.program().empty());
+size_t first_arg = include_program ? 0 : 1;
+for (size_t i = first_arg; i < other.argv_.size(); ++i)
+argv_.push_back(other.argv_[i]);
+std::map<std::string, StringType>::const_iterator i;
+for (i = other.switches_.begin(); i != other.switches_.end(); ++i)
+switches_[i->first] = i->second;
+}
+void CommandLine::PrependWrapper(const std::wstring& wrapper_wide) {
+// The wrapper may have embedded arguments (like "gdb --args"). In this case,
+// we don't pretend to do anything fancy, we just split on spaces.
+const std::string wrapper = WideToASCII(wrapper_wide);
+std::vector<std::string> wrapper_and_args;
+SplitString(wrapper, ' ', &wrapper_and_args);
+argv_.insert(argv_.begin(), wrapper_and_args.begin(), wrapper_and_args.end());
+}
+#endif

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comparison: ipc/chromium/src/base/command_line.cc

ipc/chromium/src/base/command_line.cc