708 lines
19 KiB
Forth
Executable file
708 lines
19 KiB
Forth
Executable file
#!/usr/bin/env retro
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# Overview
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This is an application for looking up and updating the
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documentation for the words provided by RETRO.
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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
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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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To identify missing words, I need to be able to restrict the
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dictionary to the words prior to the ones added in this file.
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I define a placeholder that I can rely on as the first word,
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so I can patch the `Dictionary` as needed later.
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~~~
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:GLOSSARY-TOOL ;
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~~~
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If execution reaches this point there's at least one argument.
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I use a loop to store arguments into an array named `Args`.
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~~~
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'Args d:create #32 allot
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#0 sys:argc
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[ dup sys:argv s:keep over &Args + store n:inc ] times
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drop
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~~~
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Of the arguments, I only care about the first three. I am
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making copies of these here under names I can refer to
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later.
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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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# Data File
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I like plain text formats, so the data is stored as a plain text
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file, with one line per word. Each line has a number of fields.
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These are tab 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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I next define words to access each field. This involves helpers
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to skip over fields I'm not intersted in, a word to return a
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specific field, and the top level wrappers over these.
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Rather than manually enter each of the field accessors, I am
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just listing them in a set and constructing the words via some
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simple code.
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~~~
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{{
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:skip (n-) [ ASCII:HT s:split drop n:inc ] times ;
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:select (n-s)
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@SourceLine swap skip ASCII:HT s:split nip ;
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---reveal---
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#0 { 'name 'dstack 'astack 'fstack
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'descr 'itime 'ctime 'class
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'ex1 'ex2 'namespace 'interface }
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[ 'field: s:prepend d:create
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dup compile:lit &select compile:call compile:ret
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&class:word reclass n:inc ] set:for-each drop
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}}
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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
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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
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actions, or any examples, they will be displayed after
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the description.
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~~~
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{{
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:s:putfmt (s-) s:format s:put ;
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:name field:name '%s\n\n s:putfmt ;
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:data field:dstack '__Data:__%s\n s:putfmt ;
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:address field:astack '__Addr:__%s\n s:putfmt ;
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:float field:fstack '__Float:_%s\n\n s:putfmt ;
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:description field:descr '%s\n\n s:putfmt ;
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:interpret-time field:itime s:length 0; drop
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field:itime 'Interpret_Time:\n__%s\n\n s:putfmt ;
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:compile-time field:ctime s:length 0; drop
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field:ctime 'Compile_Time:\n__%s\n\n s:putfmt ;
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:| '_|_ s:put ;
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:class field:class 'Class:_%s s:putfmt ;
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:namespace field:namespace 'Namespace:_%s s:putfmt ;
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:interface field:interface 'Interface_Layer:_%s s:putfmt ;
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:example1 field:ex1 '{n/a} s:eq? not 0; drop
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field:ex1 s:format '\nExample_#1:\n\n%s\n\n s:putfmt ;
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:example2 field:ex2 '{n/a} s:eq? not 0; drop
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field:ex2 s:format '\nExample_#1:\n\n%s\n\n s:putfmt ;
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---reveal---
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:display-result
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name
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data (stack)
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address (stack)
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float (stack)
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description
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interpret-time
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compile-time
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class | namespace | interface nl
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example1
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example2 ;
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}}
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~~~
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I also have an HTML display option. This is used with the HTML
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export and (eventually) ePub.
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~~~
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{{
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:s:putfmt (s-) s:format s:put ;
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:s:putfmtx (s-) s:format
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[ $< [ '< s:put ] case
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$> [ '> s:put ] case
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$& [ '& s:put ] case
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c:put ] s:for-each ;
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:div '<div_style='margin-left:_1em;'> s:put call '</div> s:put nl ;
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:header '<h1> s:put call '</h1> s:put nl ;
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:paragraph '<p> s:put call '</p> s:put nl ;
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:br '<br> s:put nl ;
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:xmp '<xmp> s:put call '</xmp> s:put nl ;
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:b '<b> s:put s:putfmtx '</b> s:put sp ;
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:name field:name '%s s:putfmtx ;
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:data field:dstack 'Data: b '%s s:putfmtx ;
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:address field:astack 'Addr: b '%s s:putfmtx ;
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:float field:fstack 'Float: b '%s s:putfmtx ;
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:description field:descr '%s s:putfmtx ;
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:| '_|_ s:put ;
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:class field:class 'Class: b '%s s:putfmt ;
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:namespace field:namespace 'Namespace: b '%s s:putfmt ;
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:interface field:interface 'Interface_Layer: b '%s s:putfmt ;
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:example1 field:ex1 '{n/a} s:eq? not 0; drop
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[ 'Example: b br br [ field:ex1 s:format s:put ] xmp ] paragraph ;
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:example2 field:ex2 '{n/a} s:eq? not 0; drop
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[ 'Example: b br br [ field:ex2 s:format s:put ] xmp ] paragraph ;
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:interpret-time field:itime s:length 0; drop
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field:itime '<p>Interpret_Time:\n__%s</p>\n\n s:putfmt ;
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:compile-time field:ctime s:length 0; drop
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field:ctime '<p>Compile_Time:\n__%s</p>\n\n s:putfmt ;
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---reveal---
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:display-result<HTML>
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[ name ] header
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[ [ data (stack) br
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address (stack) br
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float (stack) ] paragraph ] div
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[ description ] paragraph
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interpret-time
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compile-time
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[ class | namespace | interface ] paragraph
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example1
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example2 ;
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}}
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~~~
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# Interactions
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With the command line data extracted, I can now move on
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to the words for 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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* list missing words
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## Describe a Word
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~~~
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{{
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:matched? (-f) field:name TARGET s:eq? ;
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---reveal---
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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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~~~
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## Missing Words
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Finding missing words is pretty easy. I read the names for each
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entry in the words data file into a set, then use the `d:for-each`
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combinator to see if the words in the dictionary are in the data
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file.
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If they are not, this will display the word names.
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To ensure this doesn't report the glossary words I use the patch
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point from earlier to set the dictionary to the original state
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before doing the checks.
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~~~
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{{
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'GlossaryNames d:create #4097 allot
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:restrict-scope 'GLOSSARY-TOOL d:lookup fetch !Dictionary ;
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:record-name !SourceLine field:name s:keep over &GlossaryNames + store ;
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:populate-names #1 'words.tsv [ record-name n:inc ] file:for-each-line
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n:dec &GlossaryNames store ;
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:in-set? dup &GlossaryNames set:contains-string? ;
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---reveal---
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:display-missing
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restrict-scope populate-names
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populate-names [ d:name in-set? [ drop ] [ s:put nl ] choose ] d:for-each ;
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}}
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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
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need to run the edit commands for each field to fully populate
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it.
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~~~
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{{
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'ADD var
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:template '%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 ;
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:prepare 'words.tsv file:A file:open !ADD ;
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:cleanup @ADD file:close ;
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---reveal---
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:add-word
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prepare
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TARGET template s:format [ @ADD file:write ] s:for-each
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cleanup ;
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}}
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~~~
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## Delete a Word
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This works by reading each line and writing them to a new file.
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Entries that match the word to delete are discarded. The new
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file then replaces the original `words.tsv`.
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~~~
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{{
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'NEW var
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:matched? (-f) field:name TARGET s:eq? ;
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:prepare '/tmp/words.new file:W file:open !NEW ;
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:keep-entry @SourceLine [ @NEW file:write ] s:for-each ASCII:LF @NEW file:write ;
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:cleanup @NEW file:close 'mv_/tmp/words.new_words.tsv unix:system ;
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---reveal---
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:delete-entry
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prepare
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'words.tsv [ s:keep !SourceLine matched? [ keep-entry ] -if ] file:for-each-line
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cleanup ;
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}}
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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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{{
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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
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'/tmp/glossary.dstack
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'/tmp/glossary.astack
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'/tmp/glossary.fstack
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'/tmp/glossary.descr
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'/tmp/glossary.itime
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'/tmp/glossary.ctime
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'/tmp/glossary.class
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'/tmp/glossary.ex1
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'/tmp/glossary.ex2
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'/tmp/glossary.namespace
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'/tmp/glossary.interface }
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[ file:delete ] set:for-each ;
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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-trailing 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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:clean-internal [ 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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:clean
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clean-trailing here [ clean-internal ] 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 `s:put` 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: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: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: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: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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:prepare '/tmp/words.new file:W file:open !FOUT ;
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:cleanup 'mv_/tmp/words.new_words.tsv unix:system ;
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~~~
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~~~
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---reveal---
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:handle-edit
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prepare
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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 ]
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[ @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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cleanup ;
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}}
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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
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word, 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
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a separator bar between each entry.
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#### Text
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~~~
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{{
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:horizontal-line #72 [ $- c:put ] times nl nl ;
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:export-glossary
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'words.tsv
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[ s:keep !SourceLine display-result horizontal-line ] file:for-each-line ;
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~~~
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#### HTML
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~~~
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:export-html
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'words.tsv [ s:keep !SourceLine
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display-result<HTML> '<hr/> s:put 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
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&field:dstack
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&field:astack
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&field:fstack
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&field:descr
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&field:itime
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&field:ctime
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&field:class
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&field:ex1
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&field:ex2
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&field:namespace
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&field:interface }
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[ call s:put tab ] set:for-each 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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---reveal---
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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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'html [ export-html ] s:case
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'tsv [ export-tsv ] s:case
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drop ;
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~~~
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## Help
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~~~
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:show-help
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{ 'RETRO_Glossary_Tool
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'--------------------------------
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'describe_<wordname>
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'delete_<wordname>
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'add_<wordname>
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'edit_<field>_<wordname>
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'export_<format>
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'missing
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'--------------------------------
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'Editor_Fields:
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'__name
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'__dstack
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'__astack
|
|
'__fstack
|
|
'__descr
|
|
'__itime
|
|
'__ctime
|
|
'__class
|
|
'__ex1
|
|
'__ex2
|
|
'__namespace
|
|
'__interface
|
|
'--------------------------------
|
|
'Export_Formats:
|
|
'__glossary
|
|
'__tsv
|
|
'--------------------------------
|
|
} [ s:put nl ] set:for-each ;
|
|
~~~
|
|
|
|
|
|
# Gopher and HTTP Server
|
|
|
|
This tool embeds a tiny Gopher and HTTP server designed to run
|
|
under inetd.
|
|
|
|
First, set the port and server to use. I default to 9999 and
|
|
forthworks.com.
|
|
|
|
~~~
|
|
#9999 'PORT const
|
|
'forthworks.com 'DOMAIN s:const
|
|
~~~
|
|
|
|
Next, words to display the main index (when requesting / or an
|
|
empty selector).
|
|
|
|
Gopher protocol for directories dictates the following format:
|
|
|
|
<type><description>\t<selector>\t<server>\t<port>\r\n
|
|
|
|
So `display-entry` constructs these. The selectors chosen are
|
|
`desc wordname`; the server is hardcoded to forthworks.com in
|
|
this.
|
|
|
|
~~~
|
|
{{
|
|
:display-entry (-)
|
|
$0 c:put field:name s:put tab
|
|
'/desc_ s:put field:name s:put tab
|
|
DOMAIN s:put tab
|
|
PORT n:put
|
|
'\r\n s:format s:put ;
|
|
~~~
|
|
|
|
Next, `gopher:list-words` which iterates over each entry,
|
|
generating the directory line for each.
|
|
|
|
~~~
|
|
:gopher:list-words (-)
|
|
'words.tsv [ s:keep !SourceLine display-entry ] file:for-each-line ;
|
|
~~~
|
|
|
|
With the Gopher side of the index taken care of, I turn my
|
|
attentions towards HTTP. In this case, the index is an HTML
|
|
file with a bunch of hyperlinks. Since we can't just pass
|
|
any non-whitespace in the URLs, this uses the line number in
|
|
**words.tsv** instead.
|
|
|
|
As with the Gopher, there's a `display-entry` which makes
|
|
the HTML for each line, and an `http:list-words` which uses
|
|
this to build an index.
|
|
|
|
~~~
|
|
:sanitize (s-s)
|
|
here buffer:set
|
|
[ $< [ '< [ buffer:add ] s:for-each ] case
|
|
$> [ '> [ buffer:add ] s:for-each ] case
|
|
$& [ '& [ buffer:add ] s:for-each ] case
|
|
buffer:add ] s:for-each buffer:start s:temp ;
|
|
|
|
:display-entry (n-n)
|
|
field:name sanitize over '<a_href="/%n">%s</a><br>\n s:format s:put ;
|
|
|
|
:http:list-words (-)
|
|
#0 'words.tsv [ s:keep !SourceLine display-entry n:inc ] file:for-each-line drop ;
|
|
~~~
|
|
|
|
Next, words to display a specific word.
|
|
|
|
~~~
|
|
'Target var
|
|
:matched? (-f) field:name @Target s:eq? ;
|
|
|
|
:gopher:display
|
|
'words.tsv [ s:keep !SourceLine matched? [ display-result ] if ] file:for-each-line ;
|
|
~~~
|
|
|
|
And then the actual top level server.
|
|
|
|
~~~
|
|
:eol? (c-f)
|
|
[ ASCII:CR eq? ] [ ASCII:LF eq? ] [ ASCII:HT eq? ] tri or or ;
|
|
|
|
:s:get (a-)
|
|
buffer:set [ c:get dup buffer:add eol? not ] while ;
|
|
|
|
'Selector d:create
|
|
#1024 allot
|
|
|
|
:css (-)
|
|
{ '<style>
|
|
'tt,_a,_pre,_xmp_{_white-space:_pre;_}
|
|
'*_{_font-family:_monospace;_color:_#aaa;_background:_#121212;_}
|
|
'a_{_color:_#EE7600;_}
|
|
'</style>
|
|
} [ s:put sp ] set:for-each ;
|
|
|
|
:entry display-result<HTML> ;
|
|
|
|
:http:display (-)
|
|
#0 'words.tsv [ s:keep !SourceLine dup-pair eq? [ entry ] if n:inc ] file:for-each-line drop-pair ;
|
|
|
|
:send-http-headers
|
|
'HTTP/1.0_200_OK\nContent-Type:_text/html\n\n s:format s:put ;
|
|
|
|
:page-header
|
|
css
|
|
'<h2> s:put
|
|
PORT DOMAIN '<a_href="http://%s:%n">RETRO_Glossary</a> s:format s:put
|
|
'</h2><hr> s:put nl ;
|
|
|
|
:handle-http
|
|
page-header
|
|
&Selector ASCII:SPACE s:tokenize #1 set:nth fetch
|
|
dup s:length #1 eq?
|
|
[ drop http:list-words ]
|
|
[ n:inc s:to-number http:display ] choose ;
|
|
|
|
:handle-gopher
|
|
&Selector ASCII:SPACE s:tokenize #1 set:nth fetch
|
|
s:chop s:keep dup s:put !Target gopher:display ;
|
|
|
|
---reveal---
|
|
|
|
:server
|
|
&Selector s:get
|
|
&Selector #0 #5 s:substr
|
|
'/desc [ handle-gopher ] s:case
|
|
'GET_/ [ send-http-headers handle-http ] s:case
|
|
drop gopher:list-words ;
|
|
}}
|
|
~~~
|
|
|
|
# Finish
|
|
|
|
This checks the command line arguments and calls the proper words to
|
|
handle each case.
|
|
|
|
~~~
|
|
:process-arguments
|
|
QUERY
|
|
'describe [ find-and-display-entry ] s:case
|
|
'export [ export-data ] s:case
|
|
'edit [ handle-edit ] s:case
|
|
'add [ add-word ] s:case
|
|
'delete [ delete-entry ] s:case
|
|
'serve [ server ] s:case
|
|
'missing [ display-missing ] s:case
|
|
drop show-help ;
|
|
~~~
|
|
|
|
~~~
|
|
process-arguments
|
|
~~~
|