ファイルの読み込み

LICENSE.md

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+# 076 Free License
+
+Copyright (c) テクニカル諏訪子
+
+Permission is hereby granted to any person obtaining a copy of the software
+LibJpeg (the "Software") to use, modify, merge, copy, publish, distribute,
+sublicense, and/or sell copies of the Software, subject to the following conditions:
+
+    1. **Origin Attribution**:
+       - You must not misrepresent the origin of the Software; you must not claim
+         you created the original Software.
+    2. **Notice Preservation**:
+       - This license and the above copyright notice must remain intact in all copies
+         of the source code.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

file.cc

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+#include "file.hh"
+
+#include <iostream>
+#include <fstream>
+
+vector<u8> read_file(const string &filename) {
+  std::ifstream file(filename, std::ios::binary | std::ios::ate);
+  if (!file) {
+    throw std::runtime_error("ファイルを開くに失敗： " + filename);
+  }
+
+  const auto size = file.tellg();
+  file.seekg(0);
+  vector<u8> data(static_cast<size_t>(size));
+  if (!file.read(reinterpret_cast<char *>(data.data()), size)) {
+    throw std::runtime_error("ファイルの読み込みに失敗。");
+  }
+
+  file.close();
+
+  return data;
+}

file.hh

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+#ifndef FILE_HH
+#define FILE_HH
+
+#include "types.hh"
+
+vector<u8> read_file(const string &filename);
+
+#endif // FILE_HH