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var exec = require('child_process').exec;
var logger = require('./logger')();
var fetchGitData = function(git, cb) {
if (!cb){
throw new Error("fetchGitData requires a callback");
}
var i;
var execGit = true;
var head = {
"author_name": {
"format": "'%aN'",
},
"author_email": {
"format": "'%ae'",
},
"committer_name": {
"format": "'%cN'",
},
"committer_email": {
"format": "'%ce'",
},
"message": {
"format": "'%s'",
}
};
var remotes = {};
//-- Malformed/undefined git object
if ('undefined' === typeof git) {
return cb(new Error('No options passed'));
} else if (!git.hasOwnProperty('head')) {
return cb(new Error('You must provide the head'));
} else if (!git.head.hasOwnProperty('id')) {
return cb(new Error('You must provide the head.id'));
}
function saveRemote(name, url, push) {
var key = name + "-" + url;
if ("undefined" === typeof push || "boolean" !== typeof push) {
push = true;
}
if (!remotes.hasOwnProperty(key)) {
remotes[key] = true;
if (push) {
git.remotes.push({
"name": name,
"url": url
});
}
}
}
//-- Set required properties of git if they weren"t provided
if (!git.hasOwnProperty("branch")) {
git.branch = "";
}
if (!git.hasOwnProperty("remotes")) {
git.remotes = [];
}
//-- Assert the property types
if ("string" !== typeof git.branch) {
git.branch = "";
}
if (!(git.remotes instanceof Array)) {
git.remotes = [];
}
//-- Use git?
exec("git log -1 " + git.head.id + " --pretty=format:'%H'", function(err, response){
if (err){
// git is not available...
git.head.author_name = git.head.author_name || "Unknown Author";
git.head.author_email = git.head.author_email || "";
git.head.committer_name = git.head.committer_name || "Unknown Committer";
git.head.committer_email = git.head.committer_email || "";
git.head.message = git.head.message || "Unknown Commit Message";
return cb(null, git);
}
//-- Head
var commands = [];
var fields = [];
for (var field in head) {
fields.push(field);
var command = "git log -1 " + git.head.id + " --pretty=format:" + head[field].format;
commands.push(command);
}
var i = 0;
var remaining = commands.length;
commands.forEach(function(command){
var field = fields[i];
i++;
exec(command, function(err, response){
if (err) return cb(err);
git.head[field] = response;
remaining--;
if (remaining === 0){
//-- Branch
exec("git branch", function(err, branches){
if (err) return cb(err);
git.branch = branches.split("\n")[0].replace(/^\*\ /, "").trim();
exec("git remote -v", function(err, remotes){
if (err) return cb(err);
remotes.split("\n").forEach(function(remote) {
remote = remote.split(/\s/);
saveRemote(remote[0], remote[1]);
});
return cb(null, git);
});
});
}
});
});
});
};
module.exports = fetchGitData;
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