All these functions will manipulate character strings to fit your needs. Functions can use into conditional node and populate variable node and keep the result in a variable.

There are 3 groups of functions :

1. Character String Functions
2. Mathematics functions
3. Others functions

• This is a file function that will tell if file(s) exists. Returns the amount of files found and and 0 if it there is no match.

Usage:
$exists(input string = “string/%variable%”)

$exists(“C:\Windows\explorer.exe”) 1

$exists(“C:\Windows\system32\win*”) 98

TODO: seems to be broke currently

• $jsonencode : Converts the input string to an JSON friendly string.

Note that this does not produce any JSON data structure but one can use the result as a “Value” in a JSON data structure. This can be used in order to produce a JSON string for further automatic processing, e.g. send a POST request to some 3rdparty API using the HTTP Request processor. Or to write a JSON File using the Write File processor.

• $jsonget : Retrieves the value from a JSON object key. The first argumenst accept a string or a variable representing a valid JSON string. In the second section you refer to the object/key/array you want to get.

Usages:
$jsonencode(input string = “string/%variable%”) $jsonget(input string = “string/%variable%”[, input string = “string/%variable%”])

$jsonencode(“D:\My\Media\folder”) D:\\My\\Media\\folder

$jsonencode('Hello “World”') Hello \“World\”

$jsonget('{“things”:{“myStuff”:“some other stuff”}}', “things.myStuff”) some other stuff

$jsonget('%s_info_ffprobe%', '[1].format_name') mov,mp4,m4a,3gp,3g2,mj2

• Returns an instance from a valid array which must be in the form of “[“data”, data, etc…]”. All JSON formated data is valid. By default the function will return the first instance. If none is found it will return an empty string; “”.

This can be used in combination with another processor which generates JSON on output, for example loudness filter or in combination again with a HTTP Get processor that receives JSON data from a 3rdparty API.

Usage:
$readarray(input string = “string/%variable%”[, input integer = integer/%variable%])

$readarray(“[23, 55.5, 19]”, 2) 55.5

$readarray('[“make”, “my”, “day”]', 3) day

• This is regular expression function. It extracts text based on recognition patterns. It uses the Perl Compatible Regular Expressions (PCRE) engine. http://www.pcre.org/

Usage :
$regext(input string = “string/%variable%”, pattern = “string/%variable%”)

$regext(“<Duration value=“1214”/>”, “<Duration value=”(\d+)“/>”) 1214

$regext(“TVShow_EP0013.mxf”, “/(EP\d{4})/”) EP0013

• $hex : Converts a decimal integer to hexadecimal number.
• $dec : Converts a hexadecimal number to decimal integer. Function accepts both quoted and unquoted input.

Usages :
$hex(input integer = integer/%variable%)
$dec(input string/integer = “string”/integer/%variable%)

$hex(8) 8 $hex(15) f

$dec(8) 8 $dec(“f”) 15

• Returns a random GUID/UUID.

Usage :
$guid()

$guid() bc067580-f7de-4e12-9f84-7e905bd60378

• Returns an eight character hash for any file. Must include full path. The hash is created using Yann Collet's xxHash which is very fast and suits large video files.

Usage :
$xxhash(input string = “string/%variable%”)

$xxhash(“x:\path\to\file.mxf”) 61abf926

• $read : Reads the contents of a any text file. The function will automatically try to determine correct encoding. If storing as a variable the string length is limited to approximately 80.000 characters.

$read(“metadata.xml”)

• Converts the input string to an URL friendly string.

Usage :
$urlencode(input string = “string/%variable%”)

$urlencode(“FFAStrans is #supercool!”) FFAStrans%20is%20%23supercool!