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;; -*- lexical-binding: t; -*-
;;; The Object Prototype
( defun publication-object ( )
( let ( ( object-projects ( list ) )
( org-publish-project-alist ( list ) )
( success-report "Build complete!" ) )
( list
:object-compose
( lambda ( )
( setq org-publish-project-alist ( list object-projects ) ) )
:object-get-projects
( lambda ( project-data )
( setq object-projects ( append project-data object-projects ) ) )
:object-report
( lambda ( )
( print org-publish-project-alist )
( print success-report ) ) ) ) )
;;; The Object Interface
( defun object-compose ( publication-instance )
( funcall ( plist-get publication-instance :object-compose ) ) )
( defun object-get-projects ( publication-instance project-data )
( funcall
( plist-get publication-instance :object-get-projects ) project-data ) )
( defun object-report ( publication-instance )
( funcall ( plist-get publication-instance :object-report ) ) )
;;; The User Logic
( defun atypical-header-p ( project-data )
( let ( ( element-1 ( pop project-data ) )
( element-2 ( pop project-data ) )
( error-1 "First element is not a string: " )
( error-2 "Second element is not a keyword: " ) )
( condition-case error
( cond
( ( not ( stringp element-1 ) )
( signal 'scan-error ( concat error-1 element-1 ) ) )
( ( not ( keywordp element-2 ) )
( signal 'scan-error ( concat error-2 element-2 ) ) ) )
( scan-error ( print ( cdr error ) ) ) ) ) )
( defun export-project-alist ( publication-instance )
( object-compose publication-instance )
( object-report publication-instance ) )
( defun get-component ( project-data )
( let ( ( component ( nth 2 project-data ) ) )
( print component )
component ) )
( defun has-component-p ( project-data )
( let ( ( component-keyword ':components )
( second ( nth 1 project-data ) ) )
( eq component-keyword second ) ) )
( defun import-data ( publication-instance project-data )
( object-get-projects publication-instance project-data ) )
( defun too-short-p ( project-data )
( let ( ( minimal-length 2 ) )
( < ( length project-data ) minimal-length ) ) )
;;; The User Interface
( defun publish ( publication-instance &rest project-data-wrapped )
( let ( ( project-data ( car project-data-wrapped ) ) )
( pcase project-data
( ( guard ( too-short-p project-data ) ) nil )
( ( guard ( atypical-header-p project-data ) nil ) )
( ( pred has-component-p project-data )
( let ( ( component ( get-component project-data ) )
( head ( nth 0 project-data ) )
( tail ( nthcdr 3 project-data ) ) )
( list
head
( publish publication-instance component )
( publish publication-instance tail ) ) ) )
( _
( progn
( import-data publication-instance project-data )
( export-project-alist publication-instance ) ) ) ) ) )
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