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// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
#include <inttypes.h>
#include <limits.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <fstream>
#include <iterator>
#include <string>
#ifdef __APPLE__
#include <mach-o/dyld.h>
#endif
#ifdef _WIN32
#include <windows.h>
#endif
#include "file_util.h"
namespace deno {
bool ReadFileToString(const char* fn, std::string* contents) {
std::ifstream file(fn, std::ios::binary);
if (file.fail()) {
return false;
}
contents->assign(std::istreambuf_iterator<char>{file}, {});
return !file.fail();
}
std::string Basename(std::string const& filename) {
for (auto it = filename.rbegin(); it != filename.rend(); ++it) {
char ch = *it;
if (ch == '\\' || ch == '/') {
return std::string(it.base(), filename.end());
}
}
return filename;
}
// Returns the directory component from a filename. The returned path always
// ends with a slash. This function does not understand Windows drive letters.
std::string Dirname(std::string const& filename) {
for (auto it = filename.rbegin(); it != filename.rend(); ++it) {
char ch = *it;
if (ch == '\\' || ch == '/') {
return std::string(filename.begin(), it.base());
}
}
return std::string("./");
}
// Returns the full path the currently running executable.
// This implementation is very basic. Caveats:
// * OS X: fails if buffer is too small, does not retry with a bigger buffer.
// * Windows: ANSI only, no unicode. Fails if path is longer than 260 chars.
bool ExePath(std::string* path) {
#ifdef _WIN32
// Windows only.
char exe_buf[MAX_PATH];
DWORD len = GetModuleFileNameA(NULL, exe_buf, sizeof exe_buf);
if (len == 0 || len == sizeof exe_buf) {
return false;
}
#else
#ifdef __APPLE__
// OS X only.
char link_buf[PATH_MAX * 2]; // Exe may be longer than MAX_PATH, says Apple.
uint32_t len = sizeof link_buf;
if (_NSGetExecutablePath(link_buf, &len) < 0) {
return false;
}
#else
// Linux only.
static const char* link_buf = "/proc/self/exe";
#endif
// Linux and OS X.
char exe_buf[PATH_MAX];
char* r = realpath(link_buf, exe_buf);
if (r == NULL) {
return false;
}
#endif
// All platforms.
path->assign(exe_buf);
return true;
}
} // namespace deno
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