395 lines
10 KiB
Forth
Executable file
395 lines
10 KiB
Forth
Executable file
#!/usr/bin/env rre
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# Overview
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This is an application for looking up and updating documentation for
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the words provided by RETRO.
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# Data Set
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I like plain text formats, so the data is stored as a text file, with
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one line per word. Each line has a number of fields. These are tab
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separated. The fields are:
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| name | 0
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| data stack | 1
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| address stack | 2
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| float stack | 3
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| general description | 4
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| interpret time description | 5
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| compile time description | 6
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| class handler | 7
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| example 1 | 8
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| example 2 | 9
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| namespace | 10
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| interface | 11
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I use a variable named `SourceLine` to point to the current line
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contents.
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~~~
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'SourceLine var
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~~~
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And a helper word to skip a specified number of fields.
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~~~
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:skip (n-) [ ASCII:HT s:split drop n:inc ] times ;
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~~~
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Then it's easy to add words to return each individual field.
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~~~
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:field:name (-s) @SourceLine
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ASCII:HT s:split nip ;
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:field:dstack (-s) @SourceLine #1 skip
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ASCII:HT s:split nip ;
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:field:astack (-s) @SourceLine #2 skip
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ASCII:HT s:split nip ;
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:field:fstack (-s) @SourceLine #3 skip
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ASCII:HT s:split nip ;
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:field:descr (-s) @SourceLine #4 skip
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ASCII:HT s:split nip ;
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:field:itime (-s) @SourceLine #5 skip
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ASCII:HT s:split nip ;
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:field:ctime (-s) @SourceLine #6 skip
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ASCII:HT s:split nip ;
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:field:class (-s) @SourceLine #7 skip
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ASCII:HT s:split nip ;
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:field:ex1 (-s) @SourceLine #8 skip
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ASCII:HT s:split nip ;
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:field:ex2 (-s) @SourceLine #9 skip
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ASCII:HT s:split nip ;
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:field:namespace (-s) @SourceLine #10 skip
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ASCII:HT s:split nip ;
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:field:interface (-s) @SourceLine #11 skip
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ASCII:HT s:split nip ;
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~~~
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# Display an Entry
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I implement a word to display an entry. This will use a format like:
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name
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Data: -
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Addr: -
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Float: -
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A description of the word.
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Class Handler: class:word | Namespace: global | Interface Layer: all
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If there are specific notes on interpret or compile time actions, or any
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examples, they will be displayed after the description.
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~~~
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:puts<formatted> (s-) s:with-format puts ;
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:display-result
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field:name puts nl nl
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field:dstack '__Data:__%s\n puts<formatted>
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field:astack '__Addr:__%s\n puts<formatted>
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field:fstack '__Float:_%s\n puts<formatted> nl
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field:descr '%s\n\n puts<formatted>
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field:itime s:length n:zero? [ field:itime 'Interpret_Time:\n__%s\n\n puts<formatted> ] -if
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field:ctime s:length n:zero? [ field:ctime 'Compile_Time:\n__%s\n\n puts<formatted> ] -if
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field:interface field:namespace field:class
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'Class_Handler:_%s_|_Namespace:_%s_|_Interface_Layer:_%s\n\n puts<formatted>
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field:ex1 '{n/a} s:eq? [ field:ex1 s:with-format 'Example_#1:\n\n%s\n\n puts<formatted> ] -if
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field:ex2 '{n/a} s:eq? [ field:ex2 s:with-format 'Example_#2:\n\n%s\n\n puts<formatted> ] -if ;
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~~~
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# Prepare for Command Line Processing
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This application can take a variable number of arguments.
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I first check to make sure at least one was passed. If not, just exit.
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~~~
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sys:argc n:zero? [ #0 unix:exit ] if
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~~~
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If execution reaches this point there's at least one argument. I use a
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loop to store arguments into an array.
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~~~
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'Args d:create #32 allot
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#0 sys:argc [ dup sys:argv s:keep over &Args + store n:inc ] times drop
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~~~
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And then populate constants for each one I care about.
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~~~
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#0 &Args + fetch 'QUERY s:const
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#1 &Args + fetch 'TARGET s:const
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#2 &Args + fetch 'TARGET2 s:const
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~~~
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# Interactions
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With the command line data setup, I can now move on to the words for
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handling specific interactions.
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There are five primary roles:
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* describe word
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* add word
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* delete word
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* edit word
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* export data
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## Describe a Word
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~~~
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:matched? (-f) field:name TARGET s:eq? ;
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:find-and-display-entry
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'words.tsv [ s:keep !SourceLine matched? [ display-result ] if ] file:for-each-line ;
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~~~
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## Add a Word
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This just adds a stub to the end of the words.tsv file. You'll need to run the
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edit commands for each field to fully populate it.
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~~~
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'FADD var
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:add-word
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'words.tsv file:A file:open !FADD
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TARGET '%s\t-\t-\t-\t{n/a}\t\t\tclass:word\t{n/a}\t{n/a}\t{n/a}\t{n/a}\t{n/a}\n s:with-format
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[ @FADD file:write ] s:for-each
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@FADD file:close ;
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~~~
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## Delete a Word
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~~~
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'FNEW var
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:matched? (-f) field:name TARGET s:eq? ;
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:delete-entry
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'words.new file:W file:open !FNEW
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'words.tsv [ s:keep !SourceLine matched? [ @SourceLine [ @FNEW file:write ] s:for-each ASCII:LF @FNEW file:write ] -if ] file:for-each-line
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@FNEW file:close
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'mv_words.new_words.tsv unix:system ;
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~~~
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## Edit a Word
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Editing is a bit tricky. To keep things as simple as possible, I export
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each field to a separate file under `/tmp/`.
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~~~
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:export-fields
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field:name '/tmp/glossary.name file:spew
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field:dstack '/tmp/glossary.dstack file:spew
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field:astack '/tmp/glossary.astack file:spew
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field:fstack '/tmp/glossary.fstack file:spew
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field:descr '/tmp/glossary.descr file:spew
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field:itime '/tmp/glossary.itime file:spew
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field:ctime '/tmp/glossary.ctime file:spew
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field:class '/tmp/glossary.class file:spew
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field:ex1 '/tmp/glossary.ex1 file:spew
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field:ex2 '/tmp/glossary.ex2 file:spew
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field:namespace '/tmp/glossary.namespace file:spew
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field:interface '/tmp/glossary.interface file:spew ;
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~~~
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Since I'm dumping a bunch of files into `/tmp/`, I also clean up
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when done.
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~~~
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:delete-temporary
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'/tmp/glossary.name file:delete
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'/tmp/glossary.dstack file:delete
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'/tmp/glossary.astack file:delete
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'/tmp/glossary.fstack file:delete
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'/tmp/glossary.descr file:delete
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'/tmp/glossary.itime file:delete
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'/tmp/glossary.ctime file:delete
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'/tmp/glossary.class file:delete
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'/tmp/glossary.ex1 file:delete
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'/tmp/glossary.ex2 file:delete
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'/tmp/glossary.namespace file:delete
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'/tmp/glossary.interface file:delete ;
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~~~
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Cleaning the edited data is necessary. This entails:
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- removing any trailing newlines
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- converting internal newlines and tabs to escape sequences
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~~~
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:clean
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dup s:length over + n:dec
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fetch [ ASCII:LF eq? ] [ ASCII:CR eq? ] bi or [ s:chop ] if
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here [ [ ASCII:LF [ $\ , $n , ] case
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ASCII:CR [ $\ , $n , ] case
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ASCII:HT [ $\ , $t , ] case
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,
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] s:for-each #0 ,
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] dip ;
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~~~
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After an edit, I need to reassemble the pieces and write them out to
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the file. I'll use `FOUT` as a variable for the file ID.
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~~~
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'FOUT var
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~~~
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And provide a word like `puts` that writes to this:
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~~~
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:write-line (s-) [ @FOUT file:write ] s:for-each ;
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:write-nl (-) ASCII:LF @FOUT file:write ;
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~~~
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~~~
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:generate-entry
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s:empty [ '/tmp/glossary.fstack file:slurp ] sip clean s:keep
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s:empty [ '/tmp/glossary.astack file:slurp ] sip clean s:keep
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s:empty [ '/tmp/glossary.dstack file:slurp ] sip clean s:keep
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s:empty [ '/tmp/glossary.name file:slurp ] sip clean s:keep
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'%s\t%s\t%s\t%s\t s:with-format write-line
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s:empty [ '/tmp/glossary.class file:slurp ] sip clean s:keep
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s:empty [ '/tmp/glossary.ctime file:slurp ] sip clean s:keep
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s:empty [ '/tmp/glossary.itime file:slurp ] sip clean s:keep
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s:empty [ '/tmp/glossary.descr file:slurp ] sip clean s:keep
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'%s\t%s\t%s\t%s\t s:with-format write-line
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s:empty [ '/tmp/glossary.interface file:slurp ] sip clean s:keep
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s:empty [ '/tmp/glossary.namespace file:slurp ] sip clean s:keep
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s:empty [ '/tmp/glossary.ex2 file:slurp ] sip clean s:keep
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s:empty [ '/tmp/glossary.ex1 file:slurp ] sip clean s:keep
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'%s\t%s\t%s\t%s\t s:with-format write-line ;
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~~~
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Next, get the editor from the $EDITOR environment variable.
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~~~
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'EDITOR s:empty [ unix:getenv ] sip 'EDITOR s:const
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~~~
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~~~
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:edit:field (s-)
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EDITOR '%s_/tmp/glossary.%s s:with-format unix:system ;
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~~~
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~~~
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:select-field
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export-fields
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TARGET
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'name [ 'name edit:field ] s:case
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'dstack [ 'dstack edit:field ] s:case
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'astack [ 'astack edit:field ] s:case
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'fstack [ 'fstack edit:field ] s:case
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'descr [ 'descr edit:field ] s:case
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'itime [ 'itime edit:field ] s:case
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'ctime [ 'ctime edit:field ] s:case
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'class [ 'class edit:field ] s:case
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'ex1 [ 'ex1 edit:field ] s:case
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'ex2 [ 'ex2 edit:field ] s:case
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'namespace [ 'namespace edit:field ] s:case
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'interface [ 'interface edit:field ] s:case
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drop ;
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~~~
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~~~
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:handle-edit
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'words.new file:W file:open !FOUT
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'words.tsv
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[ s:keep !SourceLine field:name TARGET2 s:eq?
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[ select-field generate-entry ] [ @SourceLine write-line ] choose write-nl
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] file:for-each-line
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@FOUT file:close delete-temporary
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'mv_words.new_words.tsv unix:system ;
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~~~
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## Export Data
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In addition to providing a readable piece of documentation for each word,
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I provide the ability to export the data into a few formats.
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### Glossary
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The glossary file consists of the documentation for each word, with a
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separator bar between each entry.
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~~~
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:export-glossary
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'words.tsv
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[ s:keep !SourceLine display-result #64 [ $- putc ] times nl nl ] file:for-each-line ;
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~~~
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### TSV
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I also provide for exporting the tab separated file itself. This will
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strip out fields beyond the standard set, which can save some space if
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you edit/save the TSV data with a spreadsheet application.
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~~~
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:display-fields
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field:name puts tab
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field:dstack puts tab
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field:astack puts tab
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field:fstack puts tab
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field:descr puts tab
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field:itime puts tab
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field:ctime puts tab
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field:class puts tab
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field:ex1 puts tab
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field:ex2 puts tab
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field:namespace puts tab
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field:interface puts tab
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nl ;
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:export-tsv
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'words.tsv [ s:keep !SourceLine display-fields ] file:for-each-line ;
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~~~
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### Handle Exports
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This is a second level command processor for deciding which export format
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to use.
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~~~
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:export-data
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TARGET
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'glossary [ export-glossary ] s:case
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'tsv [ export-tsv ] s:case
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drop ;
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~~~
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# Finish
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First, a word to handle command line arguments.
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~~~
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:process-arguments
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QUERY
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'describe [ find-and-display-entry ] s:case
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'export [ export-data ] s:case
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'edit [ handle-edit ] s:case
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'add [ add-word ] s:case
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'delete [ delete-entry ] s:case
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drop ;
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~~~
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~~~
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process-arguments
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#0 unix:exit
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~~~
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