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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /ipc/chromium/src/base/command_line.cc
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'ipc/chromium/src/base/command_line.cc')
-rw-r--r--ipc/chromium/src/base/command_line.cc394
1 files changed, 394 insertions, 0 deletions
diff --git a/ipc/chromium/src/base/command_line.cc b/ipc/chromium/src/base/command_line.cc
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+// 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