Imparse
=======
Parse a line of exprt-type text (IMport PARSE)
Limitations
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Very basic! (but can save lots of fiddly S*BASIC statements!)
Compatible with PSION export format strings.
Usage:
------
error% = IMPARSE(statement$, import_line$)
where
error% can be bp, xp, bl (quote error), or ef (end of import line)
statement$ will contain the last statement parsed
import_line$ is one line (record/column etc) of an import file
By repeatedly calling IMPARSE statements are extracted one by one from the
import line and put into statement$, while the import_line$ is
correspondingly truncated, until error = -10 (or LEN(import_line$) = 0).
On error, parsing stops at that point and cannot proceed until syntax
issue in import_line$ is rectified.
Numerical data, ie data not contained in double quotes, is not tested for
conformity to QDOS standards but is treated as a string.
Import line syntax is:
An import_line$ consists of <term> {,<term>}
<term> = "<string>" | <number>
<string> = "<empty>" | "<chars (0..255, except 34 (double quote))>"
<number> = <initial> + <chars (0..255, except 44 (comma))>
<initial> = <digit> | <dot> | <minus> | <dollar>
Note: All strings must be contained in double quotes
Note: There must be no spaces between terms, eg <term>, <term> is wrong.
Program Status
--------------
V0.01, pjw, 1992 Mar 27, Initial version
V0.02, pjw, 2021 Jan 13, Made compatible with Pick 'n' Mix toolkit
Conditions of use and DISCLAIMER as per Knoware.no
QL Software
