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Stored procedures
Reads a line in an external file, gets sections of this line according to a regular expression and assigns them to a variable.
This function is mainly used to easily analyze the log files.
Example
// Open an external file
FileID is int
FileID = fOpen("C:\MyDirectories\DataAccess.log", foRead)
IF FileID <> -1 THEN
       // Read a line in this file
// Format: 20001221 - Purchase
sDate is string
sInfo is string
fReadLineRegularExpression(FileID, "([0-8]*) - ([A-Za-z]*)", sDate, sInfo)
...
END
// Open an external file
MyTextFile is DiskFile
MyTextFile = fOpen("C:\MyDirectories\DataAccess.log", foRead)
IF NOT ErrorOccurred THEN
       // Read a line in this file
// Format: 20001221 - Purchase
sDate is string
sInfo is string
fReadLineRegularExpression(MyTextFile, "([0-8]*) - ([A-Za-z]*)", sDate, sInfo)
...
END
Syntax
<Result> = fReadLineRegularExpression(<File used> , <Format> , <Variable 1> [, <Variable 2> [... [, <Variable N>]]])
<Result>: Boolean
  • True if the data was read and retrieved.
  • False otherwise.
<File used>: Integer or DiskFile variable
<Format>: Character string
Reference format, expressed as a regular expression. This format uses the following characters:
A B C - / _Letters and symbols to check
[A-Z] or [0-9]Interval of letters, digits or symbols to check
*0 or more symbols to check
+1 or more symbols to check
( )Delimit part of the format to extract
{ }Defines the minimum and maximum number of times that the previous expression can occur (e.g., {min, max})
<Variable 1>: Character string, Integer, etc.
Variables that will be automatically initialized with the different parts of the format to extract. Each part is defined by the '(' and ')' characters.
<Variable 2>: Character string, Integer, etc.
Variables that will be automatically initialized with the different parts of the format to extract. Each part is defined by the '(' and ')' characters.
<Variable N>: Character string, Integer, etc.
Variables that will be automatically initialized with the different parts of the format to extract. Each part is defined by the '(' and ')' characters.
Business / UI classification: Business Logic
Component: wd300std.dll
Minimum version required
  • Version 17
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Last update: 12/20/2023

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