// // Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2019 // // Distributed under the Boost Software License, Version 1.0. (See accompanying // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) // #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