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Unified Diff: base/command_line.cc

Issue 1647803004: Move base to DEPS (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 4 years, 11 months ago
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Index: base/command_line.cc
diff --git a/base/command_line.cc b/base/command_line.cc
deleted file mode 100644
index 3fcf22ac52fc316358eb64173060db22029922b3..0000000000000000000000000000000000000000
--- a/base/command_line.cc
+++ /dev/null
@@ -1,473 +0,0 @@
-// 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.
-
-#include "base/command_line.h"
-
-#include <algorithm>
-#include <ostream>
-
-#include "base/basictypes.h"
-#include "base/files/file_path.h"
-#include "base/logging.h"
-#include "base/strings/string_split.h"
-#include "base/strings/string_util.h"
-#include "base/strings/utf_string_conversions.h"
-#include "build/build_config.h"
-
-#if defined(OS_WIN)
-#include <windows.h>
-#include <shellapi.h>
-#endif
-
-namespace base {
-
-CommandLine* CommandLine::current_process_commandline_ = NULL;
-
-namespace {
-
-const CommandLine::CharType kSwitchTerminator[] = FILE_PATH_LITERAL("--");
-const CommandLine::CharType kSwitchValueSeparator[] = FILE_PATH_LITERAL("=");
-
-// Since we use a lazy match, make sure that longer versions (like "--") are
-// listed before shorter versions (like "-") of similar prefixes.
-#if defined(OS_WIN)
-// By putting slash last, we can control whether it is treaded as a switch
-// value by changing the value of switch_prefix_count to be one less than
-// the array size.
-const CommandLine::CharType* const kSwitchPrefixes[] = {L"--", L"-", L"/"};
-#elif defined(OS_POSIX)
-// Unixes don't use slash as a switch.
-const CommandLine::CharType* const kSwitchPrefixes[] = {"--", "-"};
-#endif
-size_t switch_prefix_count = arraysize(kSwitchPrefixes);
-
-size_t GetSwitchPrefixLength(const CommandLine::StringType& string) {
- for (size_t i = 0; i < switch_prefix_count; ++i) {
- CommandLine::StringType prefix(kSwitchPrefixes[i]);
- if (string.compare(0, prefix.length(), prefix) == 0)
- return prefix.length();
- }
- return 0;
-}
-
-// Fills in |switch_string| and |switch_value| if |string| is a switch.
-// This will preserve the input switch prefix in the output |switch_string|.
-bool IsSwitch(const CommandLine::StringType& string,
- CommandLine::StringType* switch_string,
- CommandLine::StringType* switch_value) {
- switch_string->clear();
- switch_value->clear();
- size_t prefix_length = GetSwitchPrefixLength(string);
- if (prefix_length == 0 || prefix_length == string.length())
- return false;
-
- const size_t equals_position = string.find(kSwitchValueSeparator);
- *switch_string = string.substr(0, equals_position);
- if (equals_position != CommandLine::StringType::npos)
- *switch_value = string.substr(equals_position + 1);
- return true;
-}
-
-// Append switches and arguments, keeping switches before arguments.
-void AppendSwitchesAndArguments(CommandLine* command_line,
- const CommandLine::StringVector& argv) {
- bool parse_switches = true;
- for (size_t i = 1; i < argv.size(); ++i) {
- CommandLine::StringType arg = argv[i];
- TrimWhitespace(arg, TRIM_ALL, &arg);
-
- CommandLine::StringType switch_string;
- CommandLine::StringType switch_value;
- parse_switches &= (arg != kSwitchTerminator);
- if (parse_switches && IsSwitch(arg, &switch_string, &switch_value)) {
-#if defined(OS_WIN)
- command_line->AppendSwitchNative(UTF16ToASCII(switch_string),
- switch_value);
-#elif defined(OS_POSIX)
- command_line->AppendSwitchNative(switch_string, switch_value);
-#endif
- } else {
- command_line->AppendArgNative(arg);
- }
- }
-}
-
-#if defined(OS_WIN)
-// Quote a string as necessary for CommandLineToArgvW compatiblity *on Windows*.
-string16 QuoteForCommandLineToArgvW(const string16& arg,
- bool quote_placeholders) {
- // We follow the quoting rules of CommandLineToArgvW.
- // http://msdn.microsoft.com/en-us/library/17w5ykft.aspx
- string16 quotable_chars(L" \\\"");
- // We may also be required to quote '%', which is commonly used in a command
- // line as a placeholder. (It may be substituted for a string with spaces.)
- if (quote_placeholders)
- quotable_chars.push_back(L'%');
- if (arg.find_first_of(quotable_chars) == string16::npos) {
- // No quoting necessary.
- return arg;
- }
-
- string16 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) {}
- 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;
-}
-#endif
-
-} // namespace
-
-CommandLine::CommandLine(NoProgram no_program)
- : argv_(1),
- begin_args_(1) {
-}
-
-CommandLine::CommandLine(const FilePath& program)
- : argv_(1),
- begin_args_(1) {
- SetProgram(program);
-}
-
-CommandLine::CommandLine(int argc, const CommandLine::CharType* const* argv)
- : argv_(1),
- begin_args_(1) {
- InitFromArgv(argc, argv);
-}
-
-CommandLine::CommandLine(const StringVector& argv)
- : argv_(1),
- begin_args_(1) {
- InitFromArgv(argv);
-}
-
-CommandLine::CommandLine(const CommandLine& other)
- : argv_(other.argv_),
- switches_(other.switches_),
- begin_args_(other.begin_args_) {
- ResetStringPieces();
-}
-
-CommandLine& CommandLine::operator=(const CommandLine& other) {
- argv_ = other.argv_;
- switches_ = other.switches_;
- begin_args_ = other.begin_args_;
- ResetStringPieces();
- return *this;
-}
-
-CommandLine::~CommandLine() {
-}
-
-#if defined(OS_WIN)
-// static
-void CommandLine::set_slash_is_not_a_switch() {
- // The last switch prefix should be slash, so adjust the size to skip it.
- DCHECK_EQ(wcscmp(kSwitchPrefixes[arraysize(kSwitchPrefixes) - 1], L"/"), 0);
- switch_prefix_count = arraysize(kSwitchPrefixes) - 1;
-}
-#endif
-
-// static
-bool CommandLine::Init(int argc, const char* const* argv) {
- if (current_process_commandline_) {
- // If this is intentional, Reset() must be called first. If we are using
- // the shared build mode, we have to share a single object across multiple
- // shared libraries.
- return false;
- }
-
- current_process_commandline_ = new CommandLine(NO_PROGRAM);
-#if defined(OS_WIN)
- current_process_commandline_->ParseFromString(::GetCommandLineW());
-#elif defined(OS_POSIX)
- current_process_commandline_->InitFromArgv(argc, argv);
-#endif
-
- return true;
-}
-
-// static
-void CommandLine::Reset() {
- DCHECK(current_process_commandline_);
- delete current_process_commandline_;
- current_process_commandline_ = NULL;
-}
-
-// static
-CommandLine* CommandLine::ForCurrentProcess() {
- DCHECK(current_process_commandline_);
- return current_process_commandline_;
-}
-
-// static
-bool CommandLine::InitializedForCurrentProcess() {
- return !!current_process_commandline_;
-}
-
-#if defined(OS_WIN)
-// static
-CommandLine CommandLine::FromString(const string16& command_line) {
- CommandLine cmd(NO_PROGRAM);
- cmd.ParseFromString(command_line);
- return cmd;
-}
-#endif
-
-void CommandLine::InitFromArgv(int argc,
- const CommandLine::CharType* const* argv) {
- StringVector new_argv;
- for (int i = 0; i < argc; ++i)
- new_argv.push_back(argv[i]);
- InitFromArgv(new_argv);
-}
-
-void CommandLine::InitFromArgv(const StringVector& argv) {
- argv_ = StringVector(1);
- switches_.clear();
- switches_by_stringpiece_.clear();
- begin_args_ = 1;
- SetProgram(argv.empty() ? FilePath() : FilePath(argv[0]));
- AppendSwitchesAndArguments(this, argv);
-}
-
-FilePath CommandLine::GetProgram() const {
- return FilePath(argv_[0]);
-}
-
-void CommandLine::SetProgram(const FilePath& program) {
- TrimWhitespace(program.value(), TRIM_ALL, &argv_[0]);
-}
-
-bool CommandLine::HasSwitch(const base::StringPiece& switch_string) const {
- DCHECK_EQ(StringToLowerASCII(switch_string.as_string()), switch_string);
- return switches_by_stringpiece_.find(switch_string) !=
- switches_by_stringpiece_.end();
-}
-
-bool CommandLine::HasSwitch(const char switch_constant[]) const {
- return HasSwitch(base::StringPiece(switch_constant));
-}
-
-std::string CommandLine::GetSwitchValueASCII(
- const base::StringPiece& switch_string) const {
- StringType value = GetSwitchValueNative(switch_string);
- if (!IsStringASCII(value)) {
- DLOG(WARNING) << "Value of switch (" << switch_string << ") must be ASCII.";
- return std::string();
- }
-#if defined(OS_WIN)
- return UTF16ToASCII(value);
-#else
- return value;
-#endif
-}
-
-FilePath CommandLine::GetSwitchValuePath(
- const base::StringPiece& switch_string) const {
- return FilePath(GetSwitchValueNative(switch_string));
-}
-
-CommandLine::StringType CommandLine::GetSwitchValueNative(
- const base::StringPiece& switch_string) const {
- DCHECK_EQ(StringToLowerASCII(switch_string.as_string()), switch_string);
- auto result = switches_by_stringpiece_.find(switch_string);
- return result == switches_by_stringpiece_.end() ? StringType()
- : *(result->second);
-}
-
-void CommandLine::AppendSwitch(const std::string& switch_string) {
- AppendSwitchNative(switch_string, StringType());
-}
-
-void CommandLine::AppendSwitchPath(const std::string& switch_string,
- const FilePath& path) {
- AppendSwitchNative(switch_string, path.value());
-}
-
-void CommandLine::AppendSwitchNative(const std::string& switch_string,
- const CommandLine::StringType& value) {
-#if defined(OS_WIN)
- const std::string switch_key = StringToLowerASCII(switch_string);
- StringType combined_switch_string(ASCIIToUTF16(switch_key));
-#elif defined(OS_POSIX)
- const std::string& switch_key = switch_string;
- StringType combined_switch_string(switch_key);
-#endif
- size_t prefix_length = GetSwitchPrefixLength(combined_switch_string);
- auto insertion =
- switches_.insert(make_pair(switch_key.substr(prefix_length), value));
- if (!insertion.second)
- insertion.first->second = value;
- switches_by_stringpiece_[insertion.first->first] = &(insertion.first->second);
- // Preserve existing switch prefixes in |argv_|; only append one if necessary.
- if (prefix_length == 0)
- combined_switch_string = kSwitchPrefixes[0] + combined_switch_string;
- if (!value.empty())
- combined_switch_string += kSwitchValueSeparator + value;
- // Append the switch and update the switches/arguments divider |begin_args_|.
- argv_.insert(argv_.begin() + begin_args_++, combined_switch_string);
-}
-
-void CommandLine::AppendSwitchASCII(const std::string& switch_string,
- const std::string& value_string) {
-#if defined(OS_WIN)
- AppendSwitchNative(switch_string, ASCIIToUTF16(value_string));
-#elif defined(OS_POSIX)
- AppendSwitchNative(switch_string, value_string);
-#endif
-}
-
-void CommandLine::CopySwitchesFrom(const CommandLine& source,
- const char* const switches[],
- size_t count) {
- for (size_t i = 0; i < count; ++i) {
- if (source.HasSwitch(switches[i]))
- AppendSwitchNative(switches[i], source.GetSwitchValueNative(switches[i]));
- }
-}
-
-CommandLine::StringVector CommandLine::GetArgs() const {
- // Gather all arguments after the last switch (may include kSwitchTerminator).
- StringVector args(argv_.begin() + begin_args_, argv_.end());
- // Erase only the first kSwitchTerminator (maybe "--" is a legitimate page?)
- StringVector::iterator switch_terminator =
- std::find(args.begin(), args.end(), kSwitchTerminator);
- if (switch_terminator != args.end())
- args.erase(switch_terminator);
- return args;
-}
-
-void CommandLine::AppendArg(const std::string& value) {
-#if defined(OS_WIN)
- DCHECK(IsStringUTF8(value));
- AppendArgNative(UTF8ToWide(value));
-#elif defined(OS_POSIX)
- AppendArgNative(value);
-#endif
-}
-
-void CommandLine::AppendArgPath(const FilePath& path) {
- AppendArgNative(path.value());
-}
-
-void CommandLine::AppendArgNative(const CommandLine::StringType& value) {
- argv_.push_back(value);
-}
-
-void CommandLine::AppendArguments(const CommandLine& other,
- bool include_program) {
- if (include_program)
- SetProgram(other.GetProgram());
- AppendSwitchesAndArguments(this, other.argv());
-}
-
-void CommandLine::PrependWrapper(const CommandLine::StringType& wrapper) {
- if (wrapper.empty())
- return;
- // 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.
- StringVector wrapper_argv;
- SplitString(wrapper, FILE_PATH_LITERAL(' '), &wrapper_argv);
- // Prepend the wrapper and update the switches/arguments |begin_args_|.
- argv_.insert(argv_.begin(), wrapper_argv.begin(), wrapper_argv.end());
- begin_args_ += wrapper_argv.size();
-}
-
-#if defined(OS_WIN)
-void CommandLine::ParseFromString(const string16& command_line) {
- string16 command_line_string;
- 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);
-
- DPLOG_IF(FATAL, !args) << "CommandLineToArgvW failed on command line: "
- << UTF16ToUTF8(command_line);
- InitFromArgv(num_args, args);
- LocalFree(args);
-}
-#endif
-
-CommandLine::StringType CommandLine::GetCommandLineStringInternal(
- bool quote_placeholders) const {
- StringType string(argv_[0]);
-#if defined(OS_WIN)
- string = QuoteForCommandLineToArgvW(string, quote_placeholders);
-#endif
- StringType params(GetArgumentsStringInternal(quote_placeholders));
- if (!params.empty()) {
- string.append(StringType(FILE_PATH_LITERAL(" ")));
- string.append(params);
- }
- return string;
-}
-
-CommandLine::StringType CommandLine::GetArgumentsStringInternal(
- bool quote_placeholders) const {
- StringType params;
- // Append switches and arguments.
- bool parse_switches = true;
- for (size_t i = 1; i < argv_.size(); ++i) {
- StringType arg = argv_[i];
- StringType switch_string;
- StringType switch_value;
- parse_switches &= arg != kSwitchTerminator;
- if (i > 1)
- params.append(StringType(FILE_PATH_LITERAL(" ")));
- if (parse_switches && IsSwitch(arg, &switch_string, &switch_value)) {
- params.append(switch_string);
- if (!switch_value.empty()) {
-#if defined(OS_WIN)
- switch_value =
- QuoteForCommandLineToArgvW(switch_value, quote_placeholders);
-#endif
- params.append(kSwitchValueSeparator + switch_value);
- }
- } else {
-#if defined(OS_WIN)
- arg = QuoteForCommandLineToArgvW(arg, quote_placeholders);
-#endif
- params.append(arg);
- }
- }
- return params;
-}
-
-void CommandLine::ResetStringPieces() {
- switches_by_stringpiece_.clear();
- for (const auto& entry : switches_)
- switches_by_stringpiece_[entry.first] = &(entry.second);
-}
-
-} // namespace base
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