(*
 *
 * The contents of this file are subject to the Netscape Public License
 * Version 1.0 (the "NPL"); you may not use this file except in
 * compliance with the NPL.  You may obtain a copy of the NPL at
 * http://www.mozilla.org/NPL/
 *
 * Software distributed under the NPL is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
 * for the specific language governing rights and limitations under the
 * NPL.
 *
 * The Initial Developer of this code under the NPL is Netscape
 * Communications Corporation.  Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
 * Reserved.
 *)

(*
	MANIFESTOLib - Reconciles a CW Project file with an external table of contents file.

	Uses merge sort, one pass per target.
	
	by Patrick C. Beard <beard@netscape.com>
 *)

(* Global Configuration Properties *)

property pShowReport : true
-- property pSourceTree : "Homeward:Work:Raptor:src:"
property pSourceTree : "Morbeus:Projects:Raptor:src:"

on swapDelimiters(newDelimiters)
	set oldDelimiters to get AppleScript's text item delimiters
	set AppleScript's text item delimiters to newDelimiters
	return oldDelimiters
end swapDelimiters

on setDelimiters(newDelimiters)
	set AppleScript's text item delimiters to newDelimiters
end setDelimiters

-- replaces oldChar with newChar in a string.
on replace(aString, oldChar, newChar)
	set newString to ""
	repeat with aChar in (every character of aString)
		if (contents of aChar = oldChar) then
			set newString to newString & newChar
		else
			set newString to newString & aChar
		end if
	end repeat
	return newString
end replace

(* uses "sort" scripting addition to sort a list of strings. *)
on sortList(aList)
	if (aList ­ {}) then
		return sort aList
	else
		return {}
	end if
end sortList

-- reads .toc file into a list.
on readManifestFile(sourceTree, manifestFile)
	set oldDelimiters to swapDelimiters(return)
	set fileRef to false
	set fileLines to {}
	try
		set fileRef to (open for access manifestFile without write permission)
		-- read entire file into memory, use text items to delimit lines.
		set fileContents to (read fileRef)
		repeat with lineRef in (every text item of fileContents)
			-- ignore lines that start with "#" or are empty.
			set fileLine to (contents of lineRef)
			if (fileLine ­ "") and not (fileLine starts with "#") then
				set fileLines to fileLines & (sourceTree & replace(fileLine, "/", ":"))
			end if
		end repeat
	on error
		-- ignore errors.
	end try
	if (fileRef is not false) then close access fileRef
	setDelimiters(oldDelimiters)
	return sortList(fileLines)
end readManifestFile

(* both of the following depend on ":" as the delimiter character. *)

on folderFromPath(filePath)
	return ((filePath's text items 1 thru ((count of filePath's text items) - 1)) as string) & ":"
end folderFromPath

on fileFromPath(filePath)
	return last text item of filePath
end fileFromPath

(* CW Pro IDE Interface Handlers. *)

on openProject(aProjectFile)
	tell application "CodeWarrior IDE 3.3"
		-- activate
		open aProjectFile
	end tell
end openProject

(* forces the named project file to be the front window. *)
on selectProject(aProjectFile)
	set projectName to fileFromPath(aProjectFile as text)
	tell application "CodeWarrior IDE 3.3"
		if (name of window 1 is not projectName) then
			select window projectName
		end if
	end tell
end selectProject

on closeProject(aProjectFile)
	tell application "CodeWarrior IDE 3.3"
		Close Project
	end tell
end closeProject

on getTargets()
	set targetList to {}
	set nameList to {}
	tell application "CodeWarrior IDE 3.3"
		set currentProject to project document 1
		repeat with targetIndex from 1 to (count of targets of currentProject)
			set currentTarget to (target targetIndex of currentProject)
			set targetList to targetList & {currentTarget}
			set nameList to nameList & {name of currentTarget}
		end repeat
		return {target:targetList, names:nameList}
	end tell
end getTargets

(* uses "info for" scripting addition, to return the file type of a path. *)
on getFileType(aFilePath)
	return file type of (info for alias aFilePath)
end getFileType

(* returns all "TEXT" files of the named target. *)
on getTargetFiles(targetKey)
	set targetFiles to {}
	tell application "CodeWarrior IDE 3.3"
		set currentProject to project document 1
		set currentTarget to (target targetKey of currentProject)
		try
			-- workaround for CW IDE 3.X bug, loop until error encountered.
			set fileIndex to 1
			repeat until false
				set targetFile to (target file fileIndex of currentTarget)
				-- only consider text files, since other platforms won't be managing binaries.
				-- also, only consider if target file is directly linked.
				if (linked of targetFile) then
					set targetFilePath to (Access Paths of targetFile)
					tell me
						if (getFileType(targetFilePath) = "TEXT") then
							set targetFiles to targetFiles & {targetFilePath}
						end if
					end tell
				end if
				set fileIndex to (fileIndex + 1)
			end repeat
		on error msg
			-- display dialog msg & " file count = " & fileIndex
		end try
	end tell
	return sortList(targetFiles)
end getTargetFiles

on addTargetFile(targetFile, targetList)
	tell application "CodeWarrior IDE 3.3"
		add (project document 1) new target file with data {targetFile} to targets targetList
	end tell
end addTargetFile

global gCurrentTarget

on setCurrentTarget(currentTargetName)
	if (gCurrentTarget ­ currentTargetName) then
		set gCurrentTarget to currentTargetName
		tell application "CodeWarrior IDE 3.3"
			Set Current Target currentTargetName
		end tell
	end if
end setCurrentTarget

on removeTargetFile(targetFile)
	tell application "CodeWarrior IDE 3.3"
		Remove Files {targetFile}
	end tell
end removeTargetFile

on quote(aString)
	return "'" & aString & "'"
end quote

on listContains(aList, anItem)
	repeat with listItem in aList
		if (contents of listItem = anItem) then
			return true
		end if
	end repeat
	return false
end listContains

on showList(aList)
	choose from list aList with prompt "List:" with empty selection allowed
end showList

global gProjectModified

on ModifyReadOnly(aProjectFile)
	if (not gProjectModified) then
		set gProjectModified to true
		-- so CodeWarrior will notice, must close the file before MROing it.
		closeProject(aProjectFile)
		mro aProjectFile
		openProject(aProjectFile)
		selectProject(aProjectFile)
	end if
end ModifyReadOnly

on makeStream(itemList)
	return {streamList:itemList, streamCount:count itemList, streamIndex:0}
end makeStream

(* true is used as the end of stream value. *)
property pEOS : true

on advanceStream(stream)
	set itemCount to (streamCount of stream)
	set itemIndex to (streamIndex of stream)
	if (itemIndex < itemCount) then
		set itemIndex to (itemIndex + 1)
		set (streamIndex of stream) to itemIndex
		return (item itemIndex of streamList of stream)
	else
		return pEOS
	end if
end advanceStream

-- returns true if str2 is INFINITELY great, or str1 is less than str2.
on precedes(str1, str2)
	return (str2 = pEOS) or ((str1 ­ pEOS) and (str1 < str2))
end precedes

on get_current_application()
	return last text item of ((path to current application) as text)
end get_current_application

on get_frontmost_application()
	return last text item of ((path to frontmost application) as text)
end get_frontmost_application

on activate_application(applicationName)
	tell application "Finder"
		set applicationProcess to (application process applicationName)
		set frontmost of applicationProcess to true
	end tell
end activate_application

on ReconcileProject(sourceTree, projectPath, manifestoPath)
	-- so we can easily strip off file names from paths.
	set oldDelimiters to swapDelimiters(":")
	
	-- initialize globals.
	set gCurrentTarget to ""
	set gProjectModified to false
	
	-- convert paths to aliases.
	set projectFile to alias projectPath
	set manifestFile to alias manifestoPath
	
	-- read the MANIFESTO file into a list of paths.
	set manifestContents to readManifestFile(sourceTree, manifestFile)
	-- return manifestContents
	
	-- now, start processing the file items, ensuring that the project contains all items.
	openProject(projectFile)
	selectProject(projectFile)
	set targetsList to getTargets()
	set targetNames to names of targetsList
	
	if (pShowReport) then
		set theReport to ""
		set addedFiles to ""
		set removedFiles to ""
	end if
	
	-- push current application to front for speed.
	-- set frontmostApplication to get_frontmost_application()
	-- set currentApplication to get_current_application()
	-- activate_application(currentApplication)
	
	-- reconcile all targets with the MANIFEST file.
	-- this loop should be recoded in PERL for speed.
	-- IDEA: with sorted lists, can scan both lists, like a merge sort, and make one pass per target.
	repeat with targetNameRef in targetNames
		-- switch targets because getTargetFiles now checks to see if file is linked in current target.
		set targetName to (contents of targetNameRef)
		set targetFiles to getTargetFiles(targetName)
		-- hopefully, this list test is fast.
		if (targetFiles ­ manifestContents) then
			-- return {count targetFiles, count manifestContents, targetFiles, manifestContents}
			-- make sure the project file is modifiable.
			ModifyReadOnly(projectFile)
			setCurrentTarget(targetName)
			set targetStream to makeStream(targetFiles)
			set targetItem to advanceStream(targetStream)
			set manifestStream to makeStream(manifestContents)
			set manifestItem to advanceStream(manifestStream)
			repeat until (manifestItem is pEOS) and (targetItem is pEOS)
				-- display dialog "m: " & manifestItem & ", t: " & targetFileItem
				if (manifestItem = targetItem) then
					-- items match, advance both.
					set manifestItem to advanceStream(manifestStream)
					set targetItem to advanceStream(targetStream)
				else
					-- return {manifestItem, targetItem}
					if (precedes(manifestItem, targetItem)) then
						-- we have an item in manifest, not in project, so we have to add it to the targets.
						-- display dialog "adding " & manifestItem
						addTargetFile(manifestItem, targetNames)
						if pShowReport then
							set addedFiles to addedFiles & ("# " & (last text item of manifestItem) & return)
						end if
						set manifestItem to advanceStream(manifestStream)
					else
						-- we have an item not in manifest, but in project, so it must be removed from this target.
						-- display dialog "removing " & targetItem
						removeTargetFile(targetItem)
						if pShowReport then
							set removedFiles to removedFiles & ("# " & targetName & " - " & (last text item of targetItem) & return)
						end if
						set targetItem to advanceStream(targetStream)
					end if
				end if
			end repeat
		end if
	end repeat
	
	-- activate_application(frontmostApplication)
	
	-- commit the project changes, and  optionally display a report.
	tell application "CodeWarrior IDE 3.3"
		-- leave project open for compilation phase?
		Close Project
		if pShowReport then
			if addedFiles is not "" then set theReport to ("# Added files: " & return & addedFiles)
			if removedFiles is not "" then set theReport to theReport & ("# Removed files: " & return & removedFiles)
			if (theReport is "") then set theReport to (" # Project is up to date." & return)
			-- display dialog theReport buttons {"OK"} default button "OK"
		end if
	end tell
	
	-- restore AppleScript's delimiters.
	setDelimiters(oldDelimiters)
	
	-- return 0 to indicate no error.
	return theReport
end ReconcileProject

on run
	-- when run interactively,
	-- ask user which project/MANIFEST files to use.
	set projectPath to (choose file with prompt "Choose a CW Project file." of type {"MMPr"}) as text
	set manifestPath to (choose file with prompt "Choose a TOC file to process." of type {"TEXT"}) as text
	ReconcileProject(pSourceTree, projectPath, manifestPath)
end run