Marco van de Voort wrote:
On Fri, Aug 05, 2011 at 08:55:39AM +0000, Mark Morgan Lloyd wrote:
A few months ago I was reading lots of SNMP MIBs (sming format), and
wrote a parser using a Meta-2 derivative. However in the general case,
and particularly for line-oriented input, it's probably a job for either
regexes or an (as yet unwritten) equivalent to format() etc. However,
error recovery (when a line departs from the accepted format part-way
through) is not going to be easy.
sscanf's like constructs are also a possibility. ARRAY OF CONST is strong
enough to
implement it.
Yes, that's the sort of thing I had in mind. I do little very little C
so haven't really memorised even the basic functions.
What scripting languages can be embedded in FPC/Lazarus these days? If
an embedded language was called for each line would the overhead be
excessive?
For this you need a simple interpreter statemachine. For fixed width values,
even regex is overkill.
True, I'd not really focussed on the fact that field widths were
predefined. I do even less FORTRAN...
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
--
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