Add production dependencies

node_modules/gulp-git/lib/diff.js

@@ -0,0 +1,121 @@
+'use strict';
+/**
+ * diff
+ * @module gulp-git/lib/diff
+ */
+
+var Vinyl = require('vinyl');
+var through = require('through2');
+var log = require('fancy-log');
+var path = require('path');
+var exec = require('child_process').exec;
+var catFile = require('./catFile');
+
+// https://git-scm.com/docs/git-diff#_raw_output_format
+/* eslint-disable */
+var RE_DIFF_RESULT = /\:(\w+)\s+(\w+)\s+(\w+)(?:\.{3})?\s+(\w+)(?:\.{3})?\s+(\w+)(\u0000|\t|\s+)(.+?)(?:\6|\n)(?:([^:]+?)\6)?/g;
+/* eslint-enable */
+
+function getReaslt(data) {
+  var result = [];
+  if (data && data.length) {
+    var str = data.toString();
+    var match;
+    RE_DIFF_RESULT.lastIndex = 0;
+    while ((match = RE_DIFF_RESULT.exec(str))) {
+      result.push({
+        // mode for compare "src"
+        srcMode: match[1],
+        // mode for compare "dst"
+        dstMode: match[2],
+        // sha1 for compare "src"
+        srcHash: match[3],
+        // sha1 for compare "dst"
+        dstHash: match[4],
+        // status
+        status: match[5],
+        // path for compare "src"
+        srcPath: match[7],
+        // path for compare "dst"
+        dstPath: match[8] || match[7],
+      });
+    }
+  }
+  return result;
+}
+
+/**
+ * @typedef {Object} diffOptions
+ * @property {string}   cwd {@link https://github.com/gulpjs/vinyl-fs#optionscwd}
+ * @property {string}   base {@link https://github.com/gulpjs/vinyl-fs#optionsbase}
+ * @property {boolean}  read {@link https://github.com/gulpjs/vinyl-fs#optionsread}
+ * @property {boolean}  buffer {@link https://github.com/gulpjs/vinyl-fs#optionsbuffer}
+ * @property {boolean}  stripBOM {@link https://github.com/gulpjs/vinyl-fs#optionsstripbom}
+ * @property {boolean}  log show log in console
+ * @property {string[]} args Command parameter for `git diff`
+ */
+
+/**
+ * get git diff result as a stream of vinyl `File` objects.
+ *
+ * @example
+const git = require('gulp-git');
+const eslint = require('gulp-eslint');
+git.diff('--cached', {
+  args: '-- *.js'
+})
+.pipe(eslint())
+ * @param {string}      compare compare arg for `git diff`
+ * @param {diffOptions} opt [diffOptions]{@link module:gulp-git/lib/diff~diffOptions}
+ * @returns {stream}    stream of vinyl `File` objects.
+ */
+module.exports = function (compare, opt) {
+  if (!opt) opt = {};
+  if (!opt.cwd) opt.cwd = process.cwd();
+  // https://github.com/gulpjs/vinyl-fs#optionsread
+  if (undefined === opt.read || null === opt.read) opt.read = true;
+  if (undefined === opt.log || null === opt.log) opt.log = true;
+
+  var srcStream = through.obj();
+  var cmd = compare;
+
+  if (!/--diff-filter=/.test(opt.args)) {
+    cmd += ' --diff-filter=ACM';
+  }
+  if (opt.args) {
+    cmd += ' ' + opt.args;
+  }
+
+  var maxBuffer = opt.maxBuffer || 200 * 1024;
+
+  exec('git diff --raw -z ' + cmd, {cwd: opt.cwd, maxBuffer: maxBuffer}, function(err, stdout) {
+    if (err) return srcStream.emit('error', err);
+    var files = getReaslt(stdout);
+
+    if (opt.log) {
+      log('git diff --name-status ' + cmd + '\n' + files.map(function(diff) {
+        return diff.status + '\t' + diff.dstPath;
+      }).join('\n'));
+    }
+
+    files.forEach(function(diff) {
+      srcStream.write(new Vinyl({
+        path: path.resolve(opt.cwd, diff.dstPath),
+        cwd: opt.cwd,
+        base: opt.base,
+        git: {
+          hash: diff.dstHash,
+          diff: diff
+        }
+      }));
+    });
+    srcStream.end();
+  });
+
+  if (opt.read) {
+    // read file contents when opt.read is `true`
+    return srcStream.pipe(catFile(opt));
+  }
+
+  return srcStream;
+};