applescript - 删除字符串 : AppleScript 中前后空格

Question

我正在尝试删除字符串中前后的空格，但我使用的代码不起作用...仅当我选择开头或结尾没有空格的目录路径时它仍然有效。我做错了什么？

on run {input, parameters}
    set filePath to input

    set ASTID to AppleScript's AppleScript's text item delimiters
    set AppleScript's text item delimiters to space
    set unwantedSpaces to filePath's text items

    set a to 1
    set b to (count unwantedSpaces)

    repeat while (a < b) and ((count item a of unwantedSpaces) is 0)
        set a to a + 1
    end repeat

    repeat while (b > a) and ((count item b of unwantedSpaces) is 0)
        set b to b - 1
    end repeat

    set strippedText to text from text item a to text item b of filePath
    set AppleScript's AppleScript's text item delimiters to ASTID

    set validFilePaths to {}

    repeat with aLine in strippedText
        try
            set targetAlias to POSIX file aLine as alias
            tell application "Finder" to reveal targetAlias
            set end of validFilePaths to {}

        end try
    end repeat
    return validFilePaths
end run

Answer 1

类似于 double_j 的 answer ，但对于登陆这里的其他人来说......

我经常使用一个简单的子例程，echo "str1 "| xargs shell 脚本:

on trim(theText)
  return (do shell script "echo \"" & theText & "\" | xargs")
end trim

OR 因为 JavaScript 是我的典型语言，所以我有时会在 JS 中思考并执行此操作(尽管它效率非常低，所以我不会将其用于 修剪，但当效率并不重要时，对于更复杂的事情来说，它可以快速获胜):

on trim(theText)
  return (do shell script "osascript -l JavaScript -e '\"" & theText & "\".trim()'")
end trim

(也许有一种真正的方法可以在AppleScript中执行内联JS，但我不确定...... yet)