# String module

Added in version 4.3.0.

The String module provides functions for manipulating strings as returned by modules. The strings referenced here are not YARA strings as defined in the strings section of your rule.

to_int(string)

  Added in version 4.3.0.

  Convert the given string to a signed integer. If the string starts with "0x" it is treated as base 16. If the string starts with "0" it is treated base 8. Leading '+' or '-' is also supported.

  Example: string.to_int("1234") == 1234 Example: string.to_int("-10") == -10 Example: string.to_int("-010") == -8

to_int(string, base)

  Added in version 4.3.0.

  Convert the given string, interpreted with the given base, to a signed integer. Base must be 0 or between 2 and 36 inclusive. If it is zero then the string will be intrepreted as base 16 if it starts with "0x" or as base 8 if it starts with "0". Leading '+' or '-' is also supported.

  Example: string.to_int("011", 8) == 9 Example: string.to_int("-011", 0) == -9

length(string)

  Added in version 4.3.0.

  Return the length of the string, which can be any sequence of bytes. NULL bytes included.

  Example: string.length("AXSx00ERS") == 7