C++ Utilities  5.10.5
Useful C++ classes and routines such as argument parser, IO and conversion utilities
misc.cpp
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1 #include "./misc.h"
2 #include "./nativefilestream.h"
3 
4 #include <streambuf>
5 
6 using namespace std;
7 
8 namespace CppUtilities {
9 
16 std::string readFile(const std::string &path, std::string::size_type maxSize)
17 {
18  NativeFileStream file;
19  file.exceptions(ios_base::failbit | ios_base::badbit);
20  file.open(path, ios_base::in | ios_base::binary);
21  file.seekg(0, ios_base::end);
22  string res;
23  const auto size = static_cast<string::size_type>(file.tellg());
24  if (maxSize != string::npos && size > maxSize) {
25  throw ios_base::failure("File exceeds max size");
26  }
27  res.reserve(size);
28  file.seekg(ios_base::beg);
29  res.assign((istreambuf_iterator<char>(file)), istreambuf_iterator<char>());
30  return res;
31 }
32 
39 void writeFile(std::string_view path, std::string_view contents)
40 {
41  NativeFileStream file;
42  file.exceptions(ios_base::failbit | ios_base::badbit);
43  file.open(path.data(), ios_base::out | ios_base::trunc | ios_base::binary);
44  file.write(contents.data(), static_cast<std::streamoff>(contents.size()));
45  file.close();
46 }
47 
48 } // namespace CppUtilities
Contains all utilities provides by the c++utilities library.
CPP_UTILITIES_EXPORT std::string readFile(const std::string &path, std::string::size_type maxSize=std::string::npos)
Reads all contents of the specified file in a single call.
Definition: misc.cpp:16
CPP_UTILITIES_EXPORT void writeFile(std::string_view path, std::string_view contents)
Writes all contents to the specified file in a single call.
Definition: misc.cpp:39
std::fstream NativeFileStream