ptop.cfg(5)

NAME

ptop.cfg - The ptop source-beautifier configuration file.

ptop is the source beautifier of the FreePascal project.

Origin probably Pascal-TO-Pascal.cfg

DESCRIPTION

This is the main configuration file of the ptop FPC source
beautifier
The configuration file for ptop(1) isn't necessarily
called ptop.cfg, and is also not auto-loaded, so the name doesn't
matter much. This man-page describes the structure of such a con
figuration file for ptop(1)

Structure

The structure of a ptop configuration file is a simple
buildingblock repeated several (20-30) times, for each pascal
keyword known to the ptop program. (see the default configuration
file or ptopu.pp source to find out which keywords are known)
The basic building block of the configuration file con
sists out of one or two lines, describing how ptop should react
on a certain keyword. First a line without square brackets with
the following format:
keyword=option1,option2,option3,...
If one of the options is "dindonkey" (see further below),
a second line (with square brackets) is needed like this:
[keyword]=otherkeyword1,otherkeyword2,otherkeyword3,...
As you can see the block contains two types of identi
fiers, keywords(keyword and otherkeyword1..3 in above example)
and options, (option1..3 above).
Keywords are the built-in valid Pascal structure-identi
fiers like BEGIN, END, CASE, IF, THEN, ELSE, IMPLEMENTATION. The
default configuration file lists most of these.
Besides the real Pascal keywords, some other codewords are
used for operators and comment expressions. These are listed in
the following table:
Name of codeword operator ------------- ----casevar : in a case label (<>'colon') becomes := delphicomment // opencomment { or (* closecomment } or *) semicolon ; colon : equals = openparen [ closeparen ] period .
The Options codewords define actions to be taken when the
keyword before the equal sign is found.
Option does what ------- --------crsupp suppress CR before the keyword. crbefore force CR before keyword
(doesn't go with crsupp :) ) blinbefore blank line before keyword. dindonkey de-indent on assiociated keywords
(see below) dindent deindent (always) spbef space before spaft space after gobsym Print symbols which follow a: keyword but which do not
affect layout. prints until
terminators occur.
(terminators are hard-coded in pptop,
still needs changing)
inbytab indent by tab. crafter force CR after keyword. upper prints keyword all uppercase lower prints keyword all lowercase capital capitalizes keyword: 1st letter: uppercase, rest lowercase.
The option "dindonkey" requires some extra parameters,
which are set by a second line for that keyword (the one with the
square brackets), which is therefore only needed if the options
contain "dinkdonkey" (contraction of de-indent on assiociated
keyword).
"dinkdonkey" deindents if any of the keywords specified by
the extra options of the square-bracket line is found.

Example

The line

else=crbefore,dindonkey,inbytab,upper
[else]=if,then,else

Means:

The keyword this is about is else , it's on the LEFT side
of both equal signs.
When the ptop parser finds ELSE, the options tell it to do
the following things:
- (crbefore) Don't allow other code on the line before: the keyword. (ELSE alone on a line)
- (dindonkey) De-indent on the keywords: in square brackets line (if,then,else)
- (inbytab) indent by tab. - (upper) uppercase the keyword (ELSE)
Try to play with the configfile until you find the effect
you desire. The configurability and possibilities of ptop are
quite large compared to shareware source beautifier found on e.g.
SIMTEL.

Acknowledgements

The writer of the program, Michael van Canneyt, who also
helped out explaining the format of ptop.cfg.
Questions/corrections can be mailed to fpc-dev
el@vekoll.saturnus.vein.hu
Also thanks to the rest of the FPC development team.

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