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// Copyright 2017 The Bazel Authors. 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.
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <windows.h>
#include <sstream>
#include <string>
#include "src/tools/launcher/util/launcher_util.h"
namespace bazel {
namespace launcher {
using std::ostringstream;
using std::string;
using std::stringstream;
string GetLastErrorString() {
DWORD last_error = GetLastError();
if (last_error == 0) {
return string();
}
char* message_buffer;
size_t size = FormatMessageA(
FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, last_error, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPSTR)&message_buffer, 0, NULL);
stringstream result;
result << "(error: " << last_error << "): " << message_buffer;
LocalFree(message_buffer);
return result.str();
}
void die(const char* format, ...) {
va_list ap;
va_start(ap, format);
fputs("LAUNCHER ERROR: ", stderr);
vfprintf(stderr, format, ap);
va_end(ap);
fputc('\n', stderr);
exit(1);
}
void PrintError(const char* format, ...) {
va_list ap;
va_start(ap, format);
fputs("LAUNCHER ERROR: ", stderr);
vfprintf(stderr, format, ap);
va_end(ap);
fputc('\n', stderr);
}
bool DoesFilePathExist(const char* path) {
// TODO(laszlocsomor): convert `path` to (const wchar_t*), add longpath-prefix
// and use GetFileAttributesW.
DWORD dwAttrib = GetFileAttributesA(path);
return (dwAttrib != INVALID_FILE_ATTRIBUTES &&
!(dwAttrib & FILE_ATTRIBUTE_DIRECTORY));
}
bool DoesDirectoryPathExist(const char* path) {
// TODO(laszlocsomor): convert `path` to (const wchar_t*), add longpath-prefix
// and use GetFileAttributesW.
DWORD dwAttrib = GetFileAttributesA(path);
return (dwAttrib != INVALID_FILE_ATTRIBUTES &&
(dwAttrib & FILE_ATTRIBUTE_DIRECTORY));
}
string GetBinaryPathWithoutExtension(const string& binary) {
if (binary.find(".exe", binary.size() - 4) != string::npos) {
return binary.substr(0, binary.length() - 4);
}
return binary;
}
string GetBinaryPathWithExtension(const string& binary) {
return GetBinaryPathWithoutExtension(binary) + ".exe";
}
string GetEscapedArgument(const string& argument) {
ostringstream escaped_arg;
bool has_space = argument.find_first_of(' ') != string::npos;
if (has_space) {
escaped_arg << '\"';
}
string::const_iterator it = argument.begin();
while (it != argument.end()) {
char ch = *it++;
switch (ch) {
case '"':
// Escape double quotes
escaped_arg << "\\\"";
break;
case '\\':
// Escape back slashes
escaped_arg << "\\\\";
break;
default:
escaped_arg << ch;
}
}
if (has_space) {
escaped_arg << '\"';
}
return escaped_arg.str();
}
// An environment variable has a maximum size limit of 32,767 characters
// https://msdn.microsoft.com/en-us/library/ms683188.aspx
static const int BUFFER_SIZE = 32767;
bool GetEnv(const string& env_name, string* value) {
char buffer[BUFFER_SIZE];
if (!GetEnvironmentVariableA(env_name.c_str(), buffer, BUFFER_SIZE)) {
return false;
}
*value = buffer;
return true;
}
bool SetEnv(const string& env_name, const string& value) {
return SetEnvironmentVariableA(env_name.c_str(), value.c_str());
}
} // namespace launcher
} // namespace bazel
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