text: /***********************************************************************************************************************
   *
   * ID100 Utility
   * File Operations
   *
   * (C) 2017 Gergely Budai
   *
   * This is free and unencumbered software released into the public domain.
   *
   * Anyone is free to copy, modify, publish, use, compile, sell, or
   * distribute this software, either in source code form or as a compiled
   * binary, for any purpose, commercial or non-commercial, and by any
   * means.
   *
   * In jurisdictions that recognize copyright laws, the author or authors
   * of this software dedicate any and all copyright interest in the
   * software to the public domain. We make this dedication for the benefit
   * of the public at large and to the detriment of our heirs and
   * successors. We intend this dedication to be an overt act of
   * relinquishment in perpetuity of all present and future rights to this
   * software under copyright law.
   *
   * 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 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.
   *
   * For more information, please refer to <http://unlicense.org/>
   *
   **********************************************************************************************************************/
  #include <unistd.h>
  #include "file.h"
  #include "utils.h"
  
  /***********************************************************************************************************************
   * Open file
   **********************************************************************************************************************/
  FILE *FileOpen(char *filename, bool openWrite)
  {
    // File
    FILE *file;
  
    // Open file
    if(filename != NULL) {
      if((file = fopen(filename, openWrite ? "wb" : "rb")) == NULL) {
        ExitWithError("Unable to open file: %s", filename);
      }
    }
    else {
      file = openWrite ? stdout : stdin;
    }
  
    return file;
  }
  
  /***********************************************************************************************************************
   * Close file
   **********************************************************************************************************************/
  void FileClose(FILE *file)
  {
    // Close File
    if((file != stdout) && (file != stdin)) {
      if(fclose(file) != 0) {
        ExitWithError("Unable to close file");
      }
    }
  }
  
  /***********************************************************************************************************************
   * Write file
   **********************************************************************************************************************/
  void FileWrite(FILE *file, void *buffer, size_t length)
  {
    if(fwrite(buffer, length, 1, file) != 1) {
      ExitWithError("Unable to write %u bytes", length);
    }
  }
  
  /***********************************************************************************************************************
   * Read file
   **********************************************************************************************************************/
  void FileRead(FILE *file, void *buffer, size_t length)
  {
    if(fread(buffer, length, 1, file) != 1) {
      ExitWithError("Unable to read %u bytes", length);
    }
  }
  
  /***********************************************************************************************************************
   * Check if someone is trying to use the terminal for binary data
   **********************************************************************************************************************/
  void FileCheckBinaryTerminal(FILE *file)
  {
    // Check if someone is trying to write the config to the terminal
    if(isatty(fileno(file))) {
      ExitWithError("Won't use terminal for binary data");
    }
  }
  