initial commit

tdtl/td/tl/tl_file_utils.cpp

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+/*
+    This file is part of TON Blockchain Library.
+
+    TON Blockchain Library is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 2 of the License, or
+    (at your option) any later version.
+
+    TON Blockchain Library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with TON Blockchain Library.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright 2017-2019 Telegram Systems LLP
+*/
+#include "tl_file_utils.h"
+
+#include <cstdio>
+#include <cstdlib>
+
+namespace td {
+namespace tl {
+
+std::string get_file_contents(const std::string &file_name, const std::string &mode) {
+  FILE *f = std::fopen(file_name.c_str(), mode.c_str());
+  if (f == NULL) {
+    return std::string();
+  }
+
+  int fseek_res = std::fseek(f, 0, SEEK_END);
+  if (fseek_res != 0) {
+    std::fprintf(stderr, "Can't seek to the end of the file \"%s\"", file_name.c_str());
+    std::abort();
+  }
+  long size_long = std::ftell(f);
+  if (size_long < 0 || size_long >= (1 << 25)) {
+    std::fprintf(stderr, "Wrong file \"%s\" has wrong size = %ld", file_name.c_str(), size_long);
+    std::abort();
+  }
+  std::size_t size = static_cast<std::size_t>(size_long);
+
+  std::string result(size, ' ');
+  if (size != 0) {
+    std::rewind(f);
+    std::size_t fread_res = std::fread(&result[0], size, 1, f);
+    if (fread_res != 1) {
+      std::fprintf(stderr, "Can't read file \"%s\"", file_name.c_str());
+      std::abort();
+    }
+  }
+  std::fclose(f);
+
+  return result;
+}
+
+bool put_file_contents(const std::string &file_name, const std::string &mode, const std::string &contents) {
+  FILE *f = std::fopen(file_name.c_str(), mode.c_str());
+  if (f == NULL) {
+    std::fprintf(stderr, "Can't open file \"%s\"\n", file_name.c_str());
+    return false;
+  }
+
+  std::size_t fwrite_res = std::fwrite(contents.c_str(), contents.size(), 1, f);
+  if (fwrite_res != 1) {
+    std::fclose(f);
+    return false;
+  }
+  if (std::fclose(f) != 0) {
+    return false;
+  }
+  return true;
+}
+
+std::string remove_documentation(const std::string &str) {
+  std::size_t line_begin = 0;
+  std::string result;
+  bool inside_documentation = false;
+  while (line_begin < str.size()) {
+    std::size_t line_end = str.find('\n', line_begin);
+    if (line_end == std::string::npos) {
+      line_end = str.size() - 1;
+    }
+    std::string line = str.substr(line_begin, line_end - line_begin + 1);
+    line_begin = line_end + 1;
+
+    std::size_t pos = line.find_first_not_of(' ');
+    if (pos != std::string::npos && ((line[pos] == '/' && line[pos + 1] == '/' && line[pos + 2] == '/') ||
+                                     (line[pos] == '/' && line[pos + 1] == '*' && line[pos + 2] == '*') ||
+                                     (inside_documentation && line[pos] == '*'))) {
+      inside_documentation = !(line[pos] == '/' && line[pos + 1] == '/' && line[pos + 2] == '/') &&
+                             !(line[pos] == '*' && line[pos + 1] == '/');
+      continue;
+    }
+
+    inside_documentation = false;
+    result += line;
+  }
+  return result;
+}
+
+}  // namespace tl
+}  // namespace td