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filecrc

warning

This function was added in omp v1.1.0.2612 and will not work in earlier versions!

warning

This function starts with a lowercase letter.

Description​

Return the 32-bit CRC value of a file.

NameDescription
const filename[]The name of the file.

Returns​

The 32-bit CRC value of the file, or 0 if the file cannot be opened.

Examples​

new crc = filecrc("file.txt");

if (crc)
{
    // Success
    printf("CRC value = %d", crc);
}
else
{
    // Error
    print("The file \"file.txt\" does not exists, or can't be opened.");
}

Notes​

tip
  • The CRC value is a useful measure to check whether the contents of a file has changed during transmission or whether it has been edited (provided that the CRC value of the original file was saved).
  • The CRC value returned by this function is the same as the one used in ZIP archives (PKZip, WinZip) and the "SFV" utilities and file formats.
  • fopen: Open a file.
  • fclose: Close a file.
  • ftemp: Create a temporary file stream.
  • fremove: Remove a file.
  • fwrite: Write to a file.
  • fputchar: Put a character in a file.
  • fgetchar: Get a character from a file.
  • fblockwrite: Write blocks of data into a file.
  • fblockread: Read blocks of data from a file.
  • fseek: Jump to a specific character in a file.
  • flength: Get the file length.
  • fexist: Check, if a file exists.
  • fmatch: Check, if patterns with a file name matches.
  • ftell: Get the current position in the file.
  • fflush: Flush a file to disk (ensure all writes are complete).
  • fstat: Return the size and the timestamp of a file.
  • frename: Rename a file.
  • fcopy: Copy a file.
  • diskfree: Returns the free disk space.
  • fattrib: Set the file attributes.
  • fcreatedir: Create a directory.