REBOL [ Title: "REBOL Script Cleaner (Pretty Printer)" Date: 29-May-2003 File: %clean-script.r Author: "Carl Sassenrath" Purpose: { Cleans (pretty prints) REBOL scripts by parsing the REBOL code and supplying standard indentation and spacing. } History: [ "Carl Sassenrath" 1.1.0 29-May-2003 {Fixes indent and parse rule.} "Carl Sassenrath" 1.0.0 27-May-2000 "Original program." ] library: [ level: 'intermediate platform: all type: [tool] domain: [text text-processing] tested-under: none support: none license: none see-also: none ] ] script-cleaner: make object! [ out: none ; output text spaced: off ; add extra bracket spacing indent: "" ; holds indentation tabs emit-line: func [] [append out newline] emit-space: func [pos] [ append out either newline = last out [indent] [ pick [#" " ""] found? any [ spaced not any [find "[(" last out find ")]" first pos] ] ] ] emit: func [from to] [emit-space from append out copy/part from to] set 'clean-script func [ "Returns new script text with standard spacing (pretty printed)." script "Original Script text" /spacey "Optional spaces near brackets and parens" /local str new ] [ spaced: found? spacey clear indent out: append clear copy script newline parse script blk-rule: [ some [ str: newline (emit-line) | #";" [thru newline | to end] new: (emit str new) | [#"[" | #"("] (emit str 1 append indent tab) blk-rule | [#"]" | #")"] (remove indent emit str 1) break | skip (set [value new] load/next str emit str new) :new ] ] remove out ; remove first char ] ] ;example: print clean-script read %clean-script.r