property |NSURL| : a reference to current application’s |NSURL|
property NSArray : a reference to current application’s NSArray
property NSPredicate : a reference to current application’s NSPredicate
property NSFileManager : a reference to current application’s NSFileManager
property NSURLTypeIdentifierKey : a reference to current application’s NSURLTypeIdentifierKey
property NSDirectoryEnumerationSkipsHiddenFiles : a reference to current application’s NSDirectoryEnumerationSkipsHiddenFiles

set aUTI to "com.adobe.pdf"
set libPath to ((path to documents folder) as string)
set posixLibPath to POSIX path of libPath

set f1List to getFilepathListByUTI(posixLibPath, aUTI, "file") of me
–> {file "Cherry:Users:me:Documents:0718kenpo.pdf", file "Cherry:Users:me:Documents:2013-09Rekihaku.pdf", file "Cherry:Users:maro:Documents:airserver.pdf"}

set f2List to getFilepathListByUTI(posixLibPath, aUTI, "POSIX") of me
–> {"/Users/me/Documents/0718kenpo.pdf", "/Users/me/Documents/2013-09Rekihaku.pdf", "/Users/me/Documents/airserver.pdf"}

on getFilepathListByUTI(aFolPOSIX, aUTI as string, aFileType as string)
　　script spdFile
　　　　property urlList : {}
　　end script
　　
　　if aFileType is not in {"file", "POSIX"} then return {}
　　
　　set aFM to NSFileManager’s defaultManager()
　　set aFolExt to (aFM’s fileExistsAtPath:aFolPOSIX isDirectory:true) as boolean
　　if aFolExt = false then return {} –フォルダ自体が存在しなければヌルリストを返す
　　
　　set aURL to |NSURL|’s fileURLWithPath:aFolPOSIX
　　set theOptions to ((current application’s NSDirectoryEnumerationSkipsPackageDescendants) as integer) + ((current application’s NSDirectoryEnumerationSkipsHiddenFiles) as integer)
　　set urlArray to (aFM’s contentsOfDirectoryAtURL:aURL includingPropertiesForKeys:{} options:theOptions |error|:(missing value))
　　if urlArray = missing value then return {}
　　
　　set (urlList of spdFile) to urlArray as list
　　set newList to {}
　　
　　repeat with i in (urlList of spdFile)
　　　　set j to POSIX path of i
　　　　set tmpUTI to my retUTIfromPath(j)
　　　　set utiRes to my filterUTIList({tmpUTI}, aUTI)
　　　　
　　　　if utiRes is not equal to {} then
　　　　　　if aFileType = "POSIX" then
　　　　　　　　set the end of newList to j
　　　　　　else if aFileType = "file" then
　　　　　　　　set the end of newList to POSIX file j
　　　　　　end if
　　　　end if
　　　　
　　end repeat
　　
　　return newList
end getFilepathListByUTI

–指定のPOSIX pathのファイルのUTIを求める
on retUTIfromPath(aPOSIXPath)
　　set aURL to |NSURL|’s fileURLWithPath:aPOSIXPath
　　set {theResult, theValue} to aURL’s getResourceValue:(reference) forKey:NSURLTypeIdentifierKey |error|:(missing value)
　　
　　if theResult = true then
　　　　return theValue as string
　　else
　　　　return theResult
　　end if
end retUTIfromPath