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// Copyright 2011 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef NINJA_UTIL_H_
#define NINJA_UTIL_H_
#ifdef _WIN32
#include "win32port.h"
#include <windows.h>
#undef ERROR
#else
#include <stdint.h>
#endif
#include "timestamp.h"
#include <string>
#include <vector>
using namespace std;
#define NINJA_UNUSED_ARG(arg_name) (void)arg_name;
/// Log a fatal message and exit.
void Fatal(const char* msg, ...);
/// Log a warning message.
void Warning(const char* msg, ...);
/// Log an error message.
void Error(const char* msg, ...);
/// Canonicalize a path like "foo/../bar.h" into just "bar.h".
bool CanonicalizePath(string* path, string* err);
bool CanonicalizePath(char* path, int* len, string* err);
/// Create a directory (mode 0777 on Unix).
/// Portability abstraction.
int MakeDir(const string& path);
/// Read a file to a string.
/// Returns -errno and fills in \a err on error.
int ReadFile(FILE* f, string* contents, string* err);
/// Read a file to a string.
/// Returns -errno and fills in \a err on error.
int ReadFile(const string& path, string* contents, string* err, bool binary = false);
/// Mark a file descriptor to not be inherited on exec()s.
void SetCloseOnExec(int fd);
/// Get the current time as relative to some epoch.
/// Epoch varies between platforms; only useful for measuring elapsed
/// time.
int64_t GetTimeMillis();
/// Given a misspelled string and a list of correct spellings, returns
/// the closest match or NULL if there is no close enough match.
const char* SpellcheckStringV(const string& text, const vector<const char*>& words);
/// Like SpellcheckStringV, but takes a NULL-terminated list.
const char* SpellcheckString(const string& text, ...);
/// Removes all Ansi escape codes (http://www.termsys.demon.co.uk/vtansi.htm).
string StripAnsiEscapeCodes(const string& in);
/// @return the load average of the machine. A negative value is returned
/// on error.
double GetLoadAverage();
#ifdef _MSC_VER
#define snprintf _snprintf
#define fileno _fileno
#define unlink _unlink
#define chdir _chdir
#define strtoull _strtoui64
#endif
#ifdef _WIN32
/// Convert the value returned by GetLastError() into a string.
string GetLastErrorString();
#endif
#ifdef _WIN32
#define DIR_SEP_S "\\"
#define DIR_SEP_C '\\'
#else
#define DIR_SEP_S "/"
#define DIR_SEP_C '/'
#endif
#endif // NINJA_UTIL_H_
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