added module files

go.mod

@@ -0,0 +1,12 @@
+module github.com/nuclio/renderer
+
+go 1.12
+
+require (
+	github.com/ghodss/yaml v1.0.0
+	github.com/mattn/go-runewidth v0.0.4 // indirect
+	github.com/nuclio/errors v0.0.1
+	github.com/olekukonko/tablewriter v0.0.1
+	github.com/stretchr/testify v1.3.0 // indirect
+	gopkg.in/yaml.v2 v2.2.2 // indirect
+)

go.sum

@@ -0,0 +1,19 @@
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/ghodss/yaml v1.0.0 h1:wQHKEahhL6wmXdzwWG11gIVCkOv05bNOh+Rxn0yngAk=
+github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
+github.com/mattn/go-runewidth v0.0.4 h1:2BvfKmzob6Bmd4YsL0zygOqfdFnK7GR4QL06Do4/p7Y=
+github.com/mattn/go-runewidth v0.0.4/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU=
+github.com/nuclio/errors v0.0.1 h1:JoADBDnhRKjW05Npu5CLS27Peo7gx+QZcNrLwINV6UY=
+github.com/nuclio/errors v0.0.1/go.mod h1:it2rUqDarIL8PasLYZo0Q1Ebsx4NRPM+OyYYakgNyrQ=
+github.com/olekukonko/tablewriter v0.0.1 h1:b3iUnf1v+ppJiOfNX4yxxqfWKMQPZR5yoh8urCTFX88=
+github.com/olekukonko/tablewriter v0.0.1/go.mod h1:vsDQFd/mU46D+Z4whnwzcISnGGzXWMclvtLoiIKAKIo=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

renderer.go

@@ -0,0 +1,76 @@
+/*
+Copyright 2017 The Nuclio Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package renderer
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+
+	"github.com/nuclio/errors"
+	"github.com/ghodss/yaml"
+	"github.com/olekukonko/tablewriter"
+)
+
+type Renderer struct {
+	output io.Writer
+}
+
+func NewRenderer(output io.Writer) *Renderer {
+	return &Renderer{
+		output: output,
+	}
+}
+
+func (r *Renderer) RenderTable(header []string, records [][]string) {
+	tableWriter := tablewriter.NewWriter(r.output)
+	tableWriter.SetHeader(header)
+	tableWriter.SetBorders(tablewriter.Border{Left: false, Top: false, Right: false, Bottom: false})
+	tableWriter.SetCenterSeparator("|")
+	tableWriter.SetHeaderLine(false)
+	tableWriter.AppendBulk(records)
+	tableWriter.Render()
+}
+
+func (r *Renderer) RenderYAML(items interface{}) error {
+	body, err := yaml.Marshal(items)
+	if err != nil {
+		return errors.Wrap(err, "Failed to render YAML")
+	}
+
+	fmt.Fprintln(r.output, string(body)) // nolint: errcheck
+
+	return nil
+}
+
+func (r *Renderer) RenderJSON(items interface{}) error {
+	body, err := json.Marshal(items)
+	if err != nil {
+		return errors.Wrap(err, "Failed to render JSON")
+	}
+
+	var pbody bytes.Buffer
+	err = json.Indent(&pbody, body, "", "\t")
+	if err != nil {
+		return errors.Wrap(err, "Failed to indent JSON")
+	}
+
+	fmt.Fprintln(r.output, pbody.String()) // nolint: errcheck
+
+	return nil
+}