How to turn an AppleScript path into a posix path and pass to shell script?

问题:

set theFile to path to replay_folder & "ls.txt"

I simply want this path to be the path of replay_folder and ls.txt

In the shell script line I want the same thing.

do shell script "cd " & replay_folder & " /usr/local/bin/ffmpeg -f concat -i ls.txt -c copy merged.mov"

I get this path with the shell script Macintosh HD:Users:BjornFroberg:Documents:wirecast:Replay-2017-03-17-12_11-1489749062:

But I want this /Users/BjornFroberg/Documents/wirecast/Replay-2017-03-17-12_11-1489749062/

The full code is:

tell application "Finder" set sorted_list to sort folders of folder ("Macintosh HD:Users:bjornfroberg:documents:wirecast:") by creation date set replay_folder to item -1 of sorted_list set replay_files to sort items of replay_folder by creation date end tell  set nr4 to "file '" & name of item -4 of replay_files & "'" set nr3 to "file '" & name of item -3 of replay_files & "'"  set theText to nr4 & return & nr3  set overwriteExistingContent to true  set theFile to path to replay_folder & "ls.txt" --actual path is: POSIX file "/Users/BjornFroberg/Documents/wirecast/Replay-2017-03-17-12_11-1489749062/ls.txt"  set theOpenedFile to open for access file theFile with write permission  if overwriteExistingContent is true then set eof of theOpenedFile to 0  write theText to theOpenedFile starting at eof  close access theOpenedFile  do shell script "cd " & replay_folder & " /usr/local/bin/ffmpeg -f concat -i ls.txt -c copy merged.mov" 

Any help is appreciated :)

回答1:

path to is part of Standard Scripting Additions and works only with predefined folders. It does not work with custom paths. For example "Macintosh HD:Users:bjornfroberg:documents:" can be replaced with the relative path

set documentsFolder to path to documents folder as text 

which points always to the documents folder of the current user.

---

replay_folderHFS path you need to coerce the Finder specifier to text

set theFile to (replay_folder as text) & "ls.txt"  

However to pass the replay_folder to the shell you have to use a POSIX path (slash separated). Since a Finder specifier cannot be coerced directly to POSIX path you need also first create a HFS path. Additionally you have to take care that space characters are escaped in the path. Any unescaped space character will break the shell script

set replay_folderPOSIX to POSIX path of (replay_folder as text) do shell script "cd " & quoted form of replay_folderPOSIX & " /usr/local/bin/ffmpeg -f concat -i ls.txt -c copy merged.mov" 

回答2:

You can convert an AppleScript path to a Posix path like this:

set applescriptPath to "Macintosh HD:Users:bjornfroberg:documents:wirecast:"  set posixPath to (the POSIX path of applescriptPath)  log posixPath 

Returns /Users/bjornfroberg/documents/wirecast/

Note: Your post's title and your actual question are kind of different topics. Your goal is to turn an AppleScript path (Macintosh HD:Users:bjornfroberg:documents:wirecast) into a posix path (/Users/bjornfroberg/documents/wirecast/), to which you want to append a file name; you can use the code above in conjunction with your existing code to build the full path:

set theFile to POSIX path of (replay_folder as text) & "ls.txt" 

Depending what you're trying to do, once you have defined your path, you may need to convert it to a posix file to manipulate it via AppleScript. For example, if you want to open it via AppleScript:

set pFile to POSIX file theFile  tell application "Finder" to open pFile 

(See POSIX path in applescript from list not opening. Raw path works)

文章来源: How to turn an AppleScript path into a posix path and pass to shell script?