FileIsText

FileIsText - checks whether the supplied file name refers to a readable text file

Declaration

Source position: line 0

function FileIsText(

const AFilename: String

):Boolean; function FileIsText(

const AFilename: String;

out FileReadable: Boolean

):Boolean;

Arguments

AFilename

The name of the file for checking

Function result

Returns True if the file is a text file

Arguments

`AFilename`		The name of the file for checking
`FileReadable`		Returns false if a file reading Exception is encountered

Function result

Returns True if the file is a text file

Description

FileIsText - checks whether the supplied file name refers to a readable text file

Searches the opening section of the file (first 1024 characters) for non-text characters such as ASCII 0 to 31 (except CR and LF, the new line characters)

Errors

If there is a file reading error, an Exception is raised and FileReadable returns False