从AppleScript路径提取文件扩展名 [英] Extracting File Extensions from AppleScript Paths

问题描述

我正在编写一个苹果脚本，最终将标记来自EyeTV的所有iTunes出口的广告。但是，我遇到了一个AppleScript路径的简单问题，EyeTV应用程序返回的记录位置。以下是上下文：

 将recordingID设置为370404006 
将myid设置为记录ID为整数
告诉应用程序EyeTV 
设置eyetvr_file来获取记录id myid的位置作为别名
 end tell 
 return eyetvr_file 
  

别名Macintosh HD2：文件：EyeTV档案：South Park.eyetv：000000001613eaa6.eyetvr

现在我需要提取包含的路径和文件前缀000000001613eaa6（使用这个问题），所以我可以在文件000000001613eaa6.edl中查找相应的商业标记。这是打嗝：

 告诉应用程序Finder
将eyetv_path设置为eyetvr_file的容器
将root_name设置为eyetvr_file的名称
将fext设置为eyetvr_file的名称扩展名
 end tell 
  

结果是，

eyetv_path：磁盘Macintosh文件夹Documents的文件夹EyeTV Archive的文件夹SouthTV.eyetv HD2应用程序Finder

root_name：000000001613eaa6.eyetvr

fext： p>

fext应为.eyetvr，而不是空字符串。如何从eyetvr_file或root_name正确提取.eyetvr？我试过一堆黑客，如

 将fext设置为（eyetvr_file作为文档）的名称扩展名
  

但是这样就会出现错误，如

错误不能使别名\Macintosh HD2：文件：EyeTV存档：South Park.eyetv：000000001613eaa6.eyetvr\转换为类型文档。号码-1700从别名Macintosh HD2：Documents：EyeTV Archive：South Park.eyetv：000000001613eaa6.eyetvr到文件




解决方案

Finder无法识别所有文件扩展名。您可以使用文本分隔符来删除最后一部分。

 执行shell脚本触摸/tmp/some.file。 eyetvr
将文本分隔符设置为。 
告诉应用程序Finder
将n设置为文件名（POSIX文件/tmp/some.file.eyetvr）
如果n包含。然后将n设置为（文本1到n的n）作为文本
n  -  some.file 
 end tell 
  




I'm writing an Apple Script that ultimately will mark commercials for all iTunes exports from EyeTV. But I'm running into a simple problem with AppleScript paths, which the EyeTV app returns as recording locations. Here's the context:

set recordingID to 370404006
set myid to recordingID as integer
tell application "EyeTV"
    set eyetvr_file to get the location of recording id myid as alias
end tell
return eyetvr_file

alias "Macintosh HD2:Documents:EyeTV Archive:South Park.eyetv:000000001613eaa6.eyetvr"

Now I need to extract the containing path and the file prefix 000000001613eaa6 (using this question) so I can look for the corresponding commercial markings in the file 000000001613eaa6.edl. Here's the hiccup:

tell application "Finder"
    set eyetv_path to container of eyetvr_file
    set root_name to name of eyetvr_file
    set fext to name extension of eyetvr_file
end tell

The results are,

eyetv_path: document file "South Park.eyetv" of folder "EyeTV Archive" of folder "Documents" of disk "Macintosh HD2" of application "Finder"

root_name: "000000001613eaa6.eyetvr"

fext: ""

fext should be ".eyetvr", not the empty string. How do I correctly extract ".eyetvr" from either eyetvr_file or root_name? I've tried a bunch of hack like

set fext to name extension of (eyetvr_file as document)

But this gives error like,

error "Can’t make alias \"Macintosh HD2:Documents:EyeTV Archive:South Park.eyetv:000000001613eaa6.eyetvr\" into type document." number -1700 from alias "Macintosh HD2:Documents:EyeTV Archive:South Park.eyetv:000000001613eaa6.eyetvr" to document

解决方案

Finder doesn't recognize all filename extensions. You could just use text item delimiters to remove the last part though.

do shell script "touch /tmp/some.file.eyetvr"
set text item delimiters to "."
tell application "Finder"
    set n to name of file (POSIX file "/tmp/some.file.eyetvr")
    if n contains "." then set n to (text items 1 thru -2 of n) as text
    n -- some.file
end tell

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