DIRECTORY FS USING [OpenFile], IO USING [STREAM], MonitoredQueue USING [MQ], Rope USING [ROPE], RopeEditingBLT USING [StringToStringBlt], RopeReader USING [GetString, Ref, SetPosition]; FileWriter: CEDAR DEFINITIONS IMPORTS RopeEditingBLT, RopeReader = BEGIN ROPE: TYPE = Rope.ROPE; Offset: TYPE = INT; Ref: TYPE = REF FileWriterBody; FileWriterBody: PRIVATE TYPE = RECORD [ block: REF TEXT, -- current block of characters blockList: BlockList, -- list of blocks blockQueue: MonitoredQueue.MQ, -- monitored queue of blocks blockCount: NAT _ 0, -- number added to queue/list stream: IO.STREAM, -- file being written toRope: BOOL, -- true if output to rope instead of file closeStream: BOOL, -- true if should close stream after write consumer: PROCESS, -- removes blocks from queue kind: OfWriter _ unused ]; OfWriter: TYPE = {control, comment, data, unused}; BlockList: TYPE = REF BlockListBody; BlockListBody: TYPE = RECORD[block: REF TEXT, next: BlockList]; blockSize: NAT = 512; OpenC: PROC [capability: FS.OpenFile, start: Offset _ 0, makeControl: BOOL _ TRUE] RETURNS [control,comment,data: Ref]; ToRope: PROC [makeControl: BOOL _ TRUE] RETURNS [control,comment,data: Ref]; ToStream: PROC [stream: IO.STREAM, makeControl: BOOL _ TRUE] RETURNS [control,comment,data: Ref]; Close: PROC [control,comment,data: Ref, textOnly: BOOL] RETURNS [dataLen, count: Offset, output: ROPE]; WriteChar: PROC [c: CHAR, writer: Ref] = INLINE { loc: NAT; block: REF TEXT _ writer.block; IF (loc_block.length) >= blockSize THEN -- buffer is full { block _ BumpWriter[writer]; loc _ 0 }; block[loc] _ c; block.length _ loc+1 }; WriteRope: PROC [r: ROPE, size: Offset, writer: Ref, reader: RopeReader.Ref] = INLINE { cnt: NAT; block: REF TEXT _ writer.block; RopeReader.SetPosition[reader,r,0]; UNTIL size=0 DO IF block.length >= blockSize THEN -- buffer is full block _ BumpWriter[writer]; cnt _ RopeReader.GetString[reader:reader, str:block]; size _ size-cnt; ENDLOOP }; WriteText: PROC [txt: REF READONLY TEXT, writer: Ref] = INLINE { cnt, loc, txtLoc: NAT; size: NAT _ txt.length; block: REF TEXT _ writer.block; txtLoc _ 0; UNTIL size=0 DO IF (loc_block.length) >= blockSize THEN -- buffer is full { block _ BumpWriter[writer]; loc _ block.length }; cnt _ MIN[blockSize-loc,size]; RopeEditingBLT.StringToStringBlt[txt,txtLoc,block,loc,cnt]; size _ size-cnt; txtLoc _ txtLoc+cnt; block.length _ loc+cnt; ENDLOOP }; BumpWriter: PRIVATE PROC [writer: Ref] RETURNS [REF TEXT]; Start: PROC; -- for initialization only END. ěFileWriter.Mesa written by Paxton. March 1981 last written by Paxton. August 24, 1982 9:31 am Russ Atkinson, July 22, 1983 10:21 am Doug Wyatt, January 17, 1984 5:40:23 pm PST -- move chars to end of list and allocate a new one Ę˝˜šĎc™Jš™Jš/™/Jš%™%Jš+™+—J˜šĎk ˜ Jšžœžœ ˜Jšžœžœžœ˜Jšœžœžœ˜Jšœžœžœ˜Jšœžœ˜)Jšœ žœ˜/J˜—Jšœ ž˜Jšžœ˜"Jšœž˜J˜Jšžœžœžœ˜Jšœžœžœ˜J˜Jšœžœžœ˜šœžœžœžœ˜'Jšœžœžœ˜/Jšœ˜'Jšœžœ˜;Jšœ žœ˜2Jšœžœžœ˜(Jšœžœ)˜7Jšœ žœ*˜=Jšœ žœ˜/J˜J˜—Jšœ žœ$˜2Jšœ žœžœ˜$Jš œžœžœžœžœ˜?Jšœ žœ˜J˜š Ďnœžœžœ+žœžœ˜RJšžœ˜$J˜—Jš Ÿœžœžœžœžœ˜LJ˜š Ÿœžœ žœžœžœžœ˜