Provided by: taglog_0.2.3-1.1_all 
NAME
tag - Manipulate tagged files
SYNOPSIS
tag option ?arg arg ...?
DESCRIPTION
The tag procedure provides a number of options for manipulating tagged files.
COMMANDS
tag readfile filename
Reads the file with the given filename and returns a list where each list element is a tag record,
which is represented by a list of label-value pairs, or label-value-endlabel triples.
The tag header is the first element returned.
tag writefile filename list
Takes a list in the format used internally in tcl programs for tagged data and writes it as a
tagged file.
tag extract list tests
Takes a list in tagged format, and a list of conditions, and returns a new list in tagged format
which contains those tag records which match the conditions.
The tests is a list of test items, each of which is a list of the form { labelname condition
matchvalue }
The conditions are
== String equals
!= String not equal
<= Less than or equal
-in Is the test value a member of the list given as the matchvalue
-contains
Does the match value contain the test value as a case insensitive substring.
-earlier
Date earlier
-later Date later - dates are in ISO format (yyyy-mm-dd [hh:mm:ss]).
-exists
Does the label exist in this record.
BUGS
tag readfile reads the whole file into memory before turning it into a list. Should be more memory
efficient.
The -earlier and -later comparisons require TCL8.3
AUTHOR
John Lines (john@paladin.demon.co.uk) July 3, 2000 tag(3tcl)