如何将AppleScript路径转换为posix路径并传递给shell脚本？ [英] How to turn an AppleScript path into a posix path and pass to shell script?

问题描述

我正在尝试创建一个我的ffmpeg命令可以合并两个视频文件的文本文件。我遇到的问题是让我的文件夹/文件路径看起来像我想要的。导致我的问题的两行是：

I´m trying to create a textfile that my ffmpeg-command can use to merge two videofiles. The problem I´m having is getting my folder/file-paths to look like I want. The two lines that cause my problems are:

将文件设置为replay_folder& ls.txt

我只想让这条路径成为 replay_folder 和 ls.txt

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

在shell脚本行中，我想要相同的东西。

In the shell script line I want the same thing.

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

我得到这个路径与shell脚本 Macintosh HD：用户：BjornFroberg：文件：wirecast：Replay-2017-03-17-12_11-1489749062：

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

但是我想要这个 / Users / BjornFroberg / Documents / wirecast / Replay-2017-03-17-12_11-1489749062 /

完整的代码是：

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"

任何帮助不胜感激：）

推荐答案

路径到是标准脚本添加的一部分，仅适用于预定义的文件夹。它不适用于自定义路径。例如Macintosh HD：Users：bjornfroberg：documents：可以替换为相对路径

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

当前用户的文档文件夹。

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

replay_folder 是一个Finder对象说明符，可以在这里特定的形式 - 只能被做为Finder。要创建（冒号分隔） HFS路径，您需要将Finder说明符强制转换为文本

replay_folder is a Finder object specifier which can - in this particular form – only be handled be the Finder. To create an (colon separated) HFS path you need to coerce the Finder specifier to text

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

但是要传递 replay_folder 到shell，你必须使用 POSIX路径（斜杠分隔）。由于Finder说明符不能直接胁迫到 POSIX路径，您还需要首先创建一个 HFS路径。此外，您必须注意空间字符在路径中转义。任何未转义的空格字符将破解shell脚本

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"

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