在Matlab中获取“文档"路径 [英] get 'Documents' path in Matlab

问题描述

我了解您在大多数情况下可能可以使用以下代码来完成工作:

I understand you can probably use the following code to get the job done in most cases:

mydocpath = fullfile(getenv('USERPROFILE'), 'Documents');

但是，如果用户已将"Doucments"文件夹移动到其他位置，例如:E:\Documents，则上述代码将不起作用，因为getenv('USERPROFILE')始终返回C:\Users\MY_USER_NAME.

However, if the user has moved 'Doucments' folder to a different location, for example: E:\Documents, the above code won't work, since getenv('USERPROFILE') always returns C:\Users\MY_USER_NAME.

在C#中，可以使用Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments)，它总是返回正确的路径，而不管文档"在哪里. Matlab中有类似的东西吗?

In C#, one can use Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), which always returns the correct path regardless where 'Documents' is. Is there anything similar in Matlab?

我当前的解决方案相当笨拙，可能不安全:

My current solution is rather clumsy and probably unsafe:

% search in the MATLAB path lists
% this method assumes that there is always a path containing \Documents\MATLAB registered already
searchPtn = '\Documents\MATLAB';
pathList = strsplit(path,';');
strIdx = strfind(pathList, searchPtn);
candidateIdx = strIdx{find(cellfun(@isempty,strIdx)==0, 1)}(1);
myDocPath = pathList{candidateIdx}(1 : strIdx{candidateIdx}+ numel(searchPtn));

推荐答案

基于@excaza的建议，我使用此处以查询注册表.

Based on @excaza 's suggestion, I came up with a solution using dos and the cmd command found here to query the registry.

% query the registry
[~,res]=dos('reg query "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders" /v Personal');
% parse result
res = strsplit(res, ' ');
myDocPath = strtrim(res{numel(res)});

---

如果尚未将客户PC中的文档文件夹重新定位或移动到环境路径之一(例如％SYSTEMROOT％)，则上述方法将返回

If the document folder in customer's PC has not been relocated or moved to one of the environment path such as %SYSTEMROOT%, the above method would return

%SOME_ENVIRONMENT_PATH%/Documents(Or a custom folder name)

以上路径在Matlab的mkdir之类的功能中不起作用或不存在，它们将以%SOME_ENVIRONMENT_PATH%作为文件夹名称.因此，我们需要检查返回值中是否存在环境路径，并获取正确的路径:

The above path will not work in Matlab's functions such as mkdir or exist, which will take %SOME_ENVIRONMENT_PATH% as a folder name. Therefore we need to check for the existence of environment path in the return value and get the correct path:

[startidx, endidx] = regexp(myDocPath,'%[A-Z]+%');
if ~isempty(startidx)
    myDocPath = fullfile(getenv(myDocPath(startidx(1)+1:endidx(1)-1)), myDocPath(endidx(1)+1:end));
end

完整代码:

% query the registry
[~,res]=dos('reg query "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders" /v Personal');
% parse result
res = strsplit(res, ' ');
% get path
myDocPath = strtrim(res{numel(res)});
% if it returns %AAAAA%/xxxx, meaning the Documents folder is
% in some environment path.
[startidx, endidx] = regexp(myDocPath,'%[A-Z]+%');
if ~isempty(startidx)
    myDocPath = fullfile(getenv(myDocPath(startidx(1)+1:endidx(1)-1)), myDocPath(endidx(1)+1:end));
end

这篇关于在Matlab中获取“文档"路径的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！