Initial commit

lib/build/branchFiles/modifiedFiles.js

@@ -0,0 +1,141 @@
+var child = require('child_process');
+var path = require('path');
+var fs = require('fs');
+var recursive = require('recursive-readdir');
+var _ = require('underscore');
+
+/**
+ * getCurrentBranchName
+ * 
+ * @returns {string} The name of the current git branch
+ */
+function getCurrentBranchName () {
+  var promise = new Promise(function (resolve, reject) {
+    child.exec('git rev-parse --abbrev-ref HEAD', function (error, stdout, stderr) {
+      if (!error) {
+        resolve(stdout.replace(/(\r\n|\n|\r)/gm, ''));
+      }
+    });
+  });
+
+  return promise;
+}
+
+/**
+ * getFilesModifiedInBranch
+ * 
+ * @param {string} branchName The branch name to get the list of modified file list from.
+ * @returns {Promise} result.
+ * @resolves {string[]} The list of modified files in the given branch. 
+ */
+function getFilesModifiedInBranch (branchName) {
+  var promise = new Promise(function (resolve, reject) {
+    var files;
+    var command = 'git diff --name-only ' + branchName + ' `git merge-base ' + branchName + ' master`';
+
+    child.exec(command, function (error, stdout, stderr) {
+      if (!error) {
+        var newLine = /(\r\n|\n|\r)/;
+        files = stdout.split(newLine).filter(function (file) {
+          return file.trim().length > 0;
+        });
+        files = files.map(function (file) {
+          return path.resolve('.', file);
+        });
+        resolve(files);
+      }
+    });
+  });
+
+  return promise;
+}
+
+var notNodeModules = function (file, stats) {
+  return stats.isDirectory() && file.toLowerCase().indexOf('node_modules') > -1;
+};
+
+/**
+ * getFilesInStatus
+ * 
+ * @returns {Promise} result.
+ * @resolves {string[]} The list of working tree files as shown by `git status --short` but without status codes.
+ */
+function getFilesInStatus () {
+  var promise = new Promise(function (resolve, reject) {
+    child.exec('git status --short', function (error, stdout, stderr) {
+      if (!error) {
+        var newLine = /\n/;
+        var files = stdout.split(newLine);
+        var promises = files.reduce(function (acc, file) {
+          if (file.trim().length > 0) {
+            var name = file.slice(3);
+            var resolvedPath = path.resolve('.', name);
+
+            try {
+              var stats = fs.statSync(resolvedPath);
+              if (stats.isFile()) {
+                acc.push(Promise.resolve(resolvedPath));
+                return acc;
+              } else if (stats.isDirectory()) {
+                acc.push(new Promise(function (resolve, reject) {
+                  recursive(resolvedPath, [notNodeModules], function (err, files) {
+                    if (err) {
+                      reject(err);
+                    }
+
+                    resolve(files);
+                  });
+                }));
+                return acc;
+              }
+            } catch (err) {
+              if (err.code === 'ENOENT') {
+                acc.push(Promise.resolve(resolvedPath));
+                return acc;
+              } else {
+                throw new Error(err);
+              }
+            }
+          } else {
+            return acc;
+          }
+        }, []);
+
+        Promise.all(promises)
+          .then(function (fileList) {
+            resolve(_.uniq(_.compact(_.flatten(fileList))));
+          });
+      }
+    });
+  });
+  return promise;
+}
+
+/**
+ * getModifiedFiles
+ * 
+ * @returns {Promise} result.
+ * @resolves {string[]} The list of all modified files of the working branch compared to master. It includes already committed files and the ones unstaged.
+ */
+var getModifiedFiles = function () {
+  var files = [];
+
+  var promise = new Promise(function (resolve, reject) {
+    getCurrentBranchName()
+      .then(function (branchName) {
+        return getFilesModifiedInBranch(branchName);
+      })
+      .then(function (modifiedFiles) {
+        files = files.concat(modifiedFiles);
+        return getFilesInStatus();
+      })
+      .then(function (filesInStatus) {
+        files = _.uniq(files.concat(filesInStatus));
+        resolve(files);
+      });
+  });
+
+  return promise;
+};
+
+module.exports = getModifiedFiles;