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function gitInfo = GetGITInfo(directory)
% gitInfo = GetGITInfo(directory)
%
% Description:
% Retrieves the git information on a specified directory or file. This is
% essentially a wrapper around the shell command "git".
%
% Input:
% directory (string) - Directory name of interest.
%
% Output:
% gitInfo (struct) - Structure containing the following information:
% Path
% Describe
% Revision
% LastCommit
% RemoteRepository
% RemoteBranch
% LocalBranch
%
% 'gitInfo' will be empty if there is no git info for directory or if directory
% does not exist.
%
% 7/11/13 dhb Wrote it based on GetSVNInfo
% 7/12/13 dhb More info, based on Ben Heasly's version of this in RenderToolbox3.
tempFile = 'GetGITInfo_gitTemp.log';
if nargin ~= 1
error('Usage: gitInfo = GetGITInfo(directory)');
end
gitInfo = [];
if (~exist(directory,'dir'))
return;
end
% Look to see if we can find the git executable on the path.
gitPath = GetGitPath;
if ~exist(gitPath, 'file')
fprintf('*** Failed to find git, returning empty.\n');
return;
end
% Get the git describe info of the specified directory.
curDir = pwd;
cd(directory);
[status, result] = system([gitPath 'git describe --always']);
cd(curDir);
if status == 0
gitInfo.Path = directory;
gitInfo.Describe = result(1:end-1);
else
return;
end
% get revision number
cd(directory);
[status, result] = system([gitPath 'git rev-parse HEAD']);
cd(curDir);
if status == 0
gitInfo.Revision = getStringLines(result);
end
% get recent commit
% send to file, because terminal is shell is non-interactive
cd(directory);
[status] = system([gitPath 'git log --max-count=1 > ' tempFile]);
if status == 0
fid = fopen(tempFile);
result = char(fread(fid))';
gitInfo.LastCommit = getStringLines(result);
fclose(fid);
end
unix(['rm -rf ' tempFile]);
cd(curDir);
% get remote repository urls
cd(directory);
[status, result] = system([gitPath 'git remote -v']);
cd(curDir);
if status == 0
gitInfo.RemoteRepository = getStringLines(result);
end
% get remote branches
cd(directory);
[status, result] = system([gitPath 'git branch -r']);
cd(curDir);
if status == 0
gitInfo.RemoteBranch = getStringLines(result);
end
% get local branches
cd(directory);
[status, result] = system([gitPath 'git branch']);
cd(curDir);
if status == 0
gitInfo.LocalBranch = getStringLines(result);
end
end
%% Break a multi-line string into a cell array of lines.
function lines = getStringLines(string)
tokens = regexp(string, '([^\r\n]*)\r?\n?', 'tokens');
nLines = numel(tokens);
if 0 == nLines
lines = {};
elseif 1 == nLines
lines = tokens{1}{1};
else
lines = cell(1, nLines);
for ii = 1:nLines
lines{ii} = tokens{ii}{1};
end
end
end
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