Script Library: 1213 scripts
 

clean-script-heavy.r

REBOL [ Title: "REBOL Heavy Script Cleaner (Pretty Printer)" Date: 27-Mar-2005 File: %clean-script-heavy.r Author: ["Carl Sassenrath" "Volker Nitsch"] Purpose: { Based on Carls %clean-script.r Cleans (pretty prints) REBOL scripts by parsing the REBOL code and supplying standard indentation and spacing. Breaks now every bracket/paren it finds (thus "heavy"). If you have a really messed up script, like %ascii-chart.r from the library, you have a chance to make it readable. Don't use with already readable Scripts.. -Volker } History: [ "Volker Nitsch" 1.2.0 27-Mar-2005 "Added heavy breaking of brackets" "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) | [#"[" | #"("] ( if all [ newline = last out #"|" <> pick tail out -2 ] [ remove back tail out ] emit str 1 if newline <> second str [emit-line] append indent tab ) blk-rule | [#"]" | #")"] ( if all [newline <> last out] [emit-line] remove indent emit str 1 if newline <> second str [emit-line] ) break | skip (set [value new] load/next str emit str new) :new ] ] remove out ; remove first char if (load script) <> load out [ make error! "script-semantic changed" ] out ] ] ;example: print clean-script read %clean-script-heavy.r halt
halt ;; to terminate script if DO'ne from webpage