REPWRITE

Name

repwrite

Purpose

Update file by replacing or adding line of information

Description

Calling Sequence

repwrite,file,tag,line

Inputs

file - string of file name to update (or create)
tag - key to scan at the start of the line, all lines found
matching this key will be replaced by the new line provided.
Any other line matching this tag will be removed from the file.
(scalar or vector, length must match LINE)
line - Replacement line for file. If tag is not found, this will be
added to the file. The output is left sorted by the tags.
If this is an empty string (''), then all lines that match the
tag will be removed.
(scalar or vector, length must match TAG)

Optional Input Parameters

Keyword Input Parameters

HEADER - String array to put at start of file if file is created.
Default is no header. If file already exists, then this is
ignored.
HEADLEN - Number of lines at the start of the file to pass over.
File must have at least this many lines to be valid. If no
header provided, the default is 0. If you give a header, then
the length of the string array is used as the default header
length.

Outputs

All output is to the file.

Keyword Output Parameters

Common Blocks

Side Effects

Restrictions

Procedure

Modification History

96/11/19, Written by Marc W. Buie, Lowell Observatory
97/2/6, MWB, different algorithm and file is now sorted.
97/10/09, MWB, added HEADER and HEADLEN keywords
98/03/22, MWB, added NOSORT keyword
2000/09/20, MWB, added support for vector input on tag and line