var replace = require('gulp-replace');

gulp.task('templates', function(){
  gulp.src(['file.txt'])
    .pipe(replace('bar', 'foo'))
    .pipe(gulp.dest('build/'));
});

var replace = require('gulp-replace');

gulp.task('templates', function(){
  gulp.src(['file.txt'])
    // See http://mdn.io/string.replace#Specifying_a_string_as_a_parameter
    .pipe(replace(/foo(.{3})/g, '$1foo'))
    .pipe(gulp.dest('build/'));
});

var replace = require('gulp-replace');

gulp.task('templates', function(){
  gulp.src(['file.txt'])
    .pipe(replace('foo', function(match) {
      // Replaces instances of "foo" with "oof"
      return match.reverse();
    }))
    .pipe(gulp.dest('build/'));
});

var replace = require('gulp-replace');

gulp.task('templates', function(){
  gulp.src(['file.txt'])
    .pipe(replace(/foo(.{3})/g, function(match, p1, offset, string) {
      // Replace foobaz with barbaz and log a ton of information
      // See http://mdn.io/string.replace#Specifying_a_function_as_a_parameter
      console.log('Found ' + match + ' with param ' + p1 + ' at ' + offset + ' inside of ' + string);
      return 'bar' + p1;
    }))
    .pipe(gulp.dest('build/'));
});

var replace = require('gulp-replace');

gulp.task('templates', function(){
  gulp.src(['file.txt'])
    .pipe(replace('filename', function() {
      // Replaces instances of "filename" with "file.txt"
      // this.file is also available for regex replace
      // See https://github.com/gulpjs/vinyl#instance-properties for details on available properties
      return this.file.relative;
    }))
    .pipe(gulp.dest('build/'));
});