Wrap errors for Go 1.13's new errors package

Author: deanishe

_examples/bookmarks/bookmarks.go

@@ -112,7 +112,7 @@ func loadBookmarks() (Bookmarks, error) {
 		// Ignore invalid URLs
 		u, err := url.Parse(e.URL)
 		if err != nil {
-			log.Printf("couldn't parse URL \"%s\" (%s): %v", e.URL, title, err)
+			log.Printf("couldn't parse URL %q (%s): %v", e.URL, title, err)
 			continue
 		}
 

_examples/fuzzy/main.go

@@ -17,7 +17,7 @@ import (
 	"path/filepath"
 	"strings"
 
-	"github.com/deanishe/awgo"
+	aw "github.com/deanishe/awgo"
 )
 
 var (
@@ -95,7 +95,7 @@ func run() {
 
 		res := wf.Filter(query)
 
-		log.Printf("%d results match \"%s\"", len(res), query)
+		log.Printf("%d results match %q", len(res), query)
 
 		for i, r := range res {
 			log.Printf("%02d. score=%0.1f sortkey=%s", i+1, r.Score, wf.Feedback.Keywords(i))

_examples/workflows/main.go

@@ -34,7 +34,7 @@ import (
 	"os/exec"
 	"time"
 
-	"github.com/deanishe/awgo"
+	aw "github.com/deanishe/awgo"
 	"github.com/deanishe/awgo/fuzzy"
 )
 
@@ -138,7 +138,7 @@ func run() {
 	// Filter results against query if user entered one
 	if query != "" {
 		res := wf.Filter(query)
-		log.Printf("[main] %d/%d repos match \"%s\"", len(res), len(repos), query)
+		log.Printf("[main] %d/%d repos match %q", len(res), len(repos), query)
 	}
 
 	// Convenience method that shows a warning if there are no results to show.

alfred.go

@@ -95,7 +95,7 @@ func (a *Alfred) Action(path ...string) error {
 	for _, p := range path {
 		p, err := filepath.Abs(p)
 		if err != nil {
-			return fmt.Errorf("[action] couldn't make path absolute (%s): %v", p, err)
+			return fmt.Errorf("make absolute path %q: %w", p, err)
 		}
 
 		paths = append(paths, p)

background.go

@@ -4,6 +4,7 @@
 package aw
 
 import (
+	"errors"
 	"fmt"
 	"io/ioutil"
 	"os"
@@ -23,16 +24,21 @@ type ErrJobExists struct {
 }
 
 // Error implements error interface.
-func (a ErrJobExists) Error() string {
-	return fmt.Sprintf(`job "%s" already running with PID %d`, a.Name, a.Pid)
+func (err ErrJobExists) Error() string {
+	return fmt.Sprintf(`job "%s" already running with PID %d`, err.Name, err.Pid)
 }
 
-// IsJobExists returns true if error is of type ErrJobExists.
-func IsJobExists(err error) bool {
-	_, ok := err.(ErrJobExists)
+// Is returns true if target is of type ErrJobExists.
+func (err ErrJobExists) Is(target error) bool {
+	_, ok := target.(ErrJobExists)
 	return ok
 }
 
+// IsJobExists returns true if error is of type or wraps ErrJobExists.
+func IsJobExists(err error) bool {
+	return errors.Is(err, ErrJobExists{})
+}
+
 // RunInBackground executes cmd in the background. It returns an
 // ErrJobExists error if a job of the same name is already running.
 func (wf *Workflow) RunInBackground(jobName string, cmd *exec.Cmd) error {
@@ -47,7 +53,7 @@ func (wf *Workflow) RunInBackground(jobName string, cmd *exec.Cmd) error {
 	// Prevent process from being killed when parent is
 	cmd.SysProcAttr.Setpgid = true
 	if err := cmd.Start(); err != nil {
-		return err
+		return fmt.Errorf("execute command %v: %w", cmd, err)
 	}
 
 	return wf.savePid(jobName, cmd.Process.Pid)

cache.go

@@ -76,7 +76,7 @@ func (c Cache) StoreJSON(name string, v interface{}) error {
 	}
 	data, err := json.MarshalIndent(v, "", "  ")
 	if err != nil {
-		return fmt.Errorf("couldn't marshal JSON: %v", err)
+		return fmt.Errorf("marshal JSON: %w", err)
 	}
 	return c.Store(name, data)
 }
@@ -95,7 +95,7 @@ func (c Cache) LoadJSON(name string, v interface{}) error {
 	p := c.path(name)
 	data, err := ioutil.ReadFile(p)
 	if err != nil {
-		return err
+		return fmt.Errorf("read file: %w", err)
 	}
 	return json.Unmarshal(data, v)
 }
@@ -117,7 +117,7 @@ func (c Cache) LoadOrStore(name string, maxAge time.Duration, reload func() ([]b
 	if load {
 		data, err := reload()
 		if err != nil {
-			return nil, fmt.Errorf("couldn't reload data: %v", err)
+			return nil, fmt.Errorf("reload data: %w", err)
 		}
 		if err := c.Store(name, data); err != nil {
 			return nil, err
@@ -149,19 +149,19 @@ func (c Cache) LoadOrStoreJSON(name string, maxAge time.Duration, reload func()
 	if load {
 		i, err := reload()
 		if err != nil {
-			return fmt.Errorf("couldn't reload data: %v", err)
+			return fmt.Errorf("reload data: %w", err)
 		}
 		data, err = json.MarshalIndent(i, "", "  ")
 		if err != nil {
-			return fmt.Errorf("couldn't marshal data to JSON: %v", err)
+			return fmt.Errorf("marshal data to JSON: %w", err)
 		}
 		if err := c.Store(name, data); err != nil {
 			return err
 		}
 	} else {
 		data, err = c.Load(name)
 		if err != nil {
-			return fmt.Errorf("couldn't load cached data: %v", err)
+			return fmt.Errorf("load cached data: %w", err)
 		}
 	}
 	// TODO: Is there any way to directly return i without marshalling and unmarshalling it?
@@ -239,7 +239,7 @@ func (s Session) Clear(current bool) error {
 
 	files, err := ioutil.ReadDir(s.cache.Dir)
 	if err != nil {
-		return fmt.Errorf("couldn't read directory (%s): %v", s.cache.Dir, err)
+		return fmt.Errorf("read directory (%s): %w", s.cache.Dir, err)
 	}
 	for _, fi := range files {
 		if !strings.HasPrefix(fi.Name(), prefix) {

cache_test.go

@@ -4,7 +4,7 @@
 package aw
 
 import (
-	"fmt"
+	"errors"
 	"os"
 	"testing"
 	"time"
@@ -236,11 +236,11 @@ func TestCache_reloadError(t *testing.T) {
 	t.Parallel()
 
 	reloadB := func() ([]byte, error) {
-		return nil, fmt.Errorf("an error")
+		return nil, errors.New("an error")
 	}
 
 	reloadJSON := func() (interface{}, error) {
-		return nil, fmt.Errorf("an error")
+		return nil, errors.New("an error")
 	}
 
 	withTempDir(func(dir string) {

feedback.go

@@ -460,7 +460,7 @@ func (fb *Feedback) Send() error {
 	}
 	output, err := json.MarshalIndent(fb, "", "  ")
 	if err != nil {
-		return fmt.Errorf("Error generating JSON : %v", err)
+		return fmt.Errorf("Error generating JSON : %w", err)
 	}
 
 	os.Stdout.Write(output)

go.mod

@@ -1,15 +1,14 @@
 module github.com/deanishe/awgo
 
-go 1.12
+go 1.13
 
 require (
 	github.com/bmatcuk/doublestar v1.3.0
-	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/deanishe/go-env v0.4.0
-	github.com/golangci/golangci-lint v1.27.0 // indirect
-	github.com/pkg/errors v0.9.1
+	github.com/golangci/golangci-lint v1.27.0
+	github.com/mfridman/tparse v0.7.4
 	github.com/stretchr/testify v1.5.1
-	golang.org/x/lint v0.0.0-20200302205851-738671d3881b // indirect
+	golang.org/x/lint v0.0.0-20200302205851-738671d3881b
 	golang.org/x/text v0.3.2
 	gopkg.in/yaml.v2 v2.3.0 // indirect
 	howett.net/plist v0.0.0-20200419221736-3b63eb3a43b5

go.sum

@@ -64,6 +64,7 @@ github.com/go-toolsmith/astp v0.0.0-20180903215135-0af7e3c24f30/go.mod h1:SV2ur9
 github.com/go-toolsmith/astp v1.0.0 h1:alXE75TXgcmupDsMK1fRAy0YUzLzqPVvBKoyWV+KPXg=
 github.com/go-toolsmith/astp v1.0.0/go.mod h1:RSyrtpVlfTFGDYRbrjyWP1pYu//tSFcvdYrA8meBmLI=
 github.com/go-toolsmith/pkgload v0.0.0-20181119091011-e9e65178eee8/go.mod h1:WoMrjiy4zvdS+Bg6z9jZH82QXwkcgCBX6nOfnmdaHks=
+github.com/go-toolsmith/pkgload v1.0.0 h1:4DFWWMXVfbcN5So1sBNW9+yeiMqLFGl1wFLTL5R0Tgg=
 github.com/go-toolsmith/pkgload v1.0.0/go.mod h1:5eFArkbO80v7Z0kdngIxsRXRMTaX4Ilcwuh3clNrQJc=
 github.com/go-toolsmith/strparse v1.0.0 h1:Vcw78DnpCAKlM20kSbAyO4mPfJn/lyYA4BJUDxe2Jb4=
 github.com/go-toolsmith/strparse v1.0.0/go.mod h1:YI2nUKP9YGZnL/L1/DLFBfixrcjslWct4wyljWhSRy8=
@@ -82,6 +83,7 @@ github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef/go.mod h1:cIg4er
 github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.2 h1:6nsPYzhq5kReh6QImI3k5qWzO4PEbvbIW2cwSfR/6xs=
 github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golangci/check v0.0.0-20180506172741-cfe4005ccda2 h1:23T5iq8rbUYlhpt5DB4XJkc6BU31uODLD1o1gKvZmD0=
 github.com/golangci/check v0.0.0-20180506172741-cfe4005ccda2/go.mod h1:k9Qvh+8juN+UKMCS/3jFtGICgW8O96FVaZsaxdzDkR4=
@@ -114,10 +116,12 @@ github.com/golangci/revgrep v0.0.0-20180526074752-d9c87f5ffaf0/go.mod h1:qOQCunE
 github.com/golangci/unconvert v0.0.0-20180507085042-28b1c447d1f4 h1:zwtduBRr5SSWhqsYNgcuWO2kFlpdOZbP0+yRjmvPGys=
 github.com/golangci/unconvert v0.0.0-20180507085042-28b1c447d1f4/go.mod h1:Izgrg8RkN3rCIMLGE9CyYmU9pY2Jer6DgANEnZ/L/cQ=
 github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
+github.com/google/go-cmp v0.2.0 h1:+dTQ8DZQJz0Mb/HjFlkptS1FeQ4cWSnN941F8aEG4SQ=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
 github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
 github.com/google/uuid v1.0.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/gookit/color v1.2.4/go.mod h1:AhIE+pS6D4Ql0SQWbBeXPHw7gY0/sjHoA4s/n1KB7xg=
+github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1 h1:EGx4pi6eqNxGaHF6qqu48+N2wcFQ5qg5FXgOdqsJ5d8=
 github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
 github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
 github.com/gostaticanalysis/analysisutil v0.0.0-20190318220348-4088753ea4d3 h1:JVnpOZS+qxli+rgVl98ILOXVNbW+kb5wcxeGx8ShUIw=
@@ -127,6 +131,7 @@ github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0/go.mod h1:8NvIoxWQoOIhqOTXgf
 github.com/grpc-ecosystem/grpc-gateway v1.9.0/go.mod h1:vNeuVxBJEsws4ogUvrchl83t/GYV9WGTSLVdBhOQFDY=
 github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
+github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
 github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
@@ -136,6 +141,7 @@ github.com/jirfag/go-printf-func-name v0.0.0-20191110105641-45db9963cdd3 h1:jNYP
 github.com/jirfag/go-printf-func-name v0.0.0-20191110105641-45db9963cdd3/go.mod h1:HEWGJkRDzjJY2sqdDwxccsGicWEf9BQOZsq2tV+xzM0=
 github.com/jmoiron/sqlx v1.2.1-0.20190826204134-d7d95172beb5/go.mod h1:1FEQNm3xlJgrMD+FBdI9+xvCksHtbpVBBw5dYhBSsks=
 github.com/jonboulle/clockwork v0.1.0/go.mod h1:Ii8DK3G1RaLaWxj9trq07+26W01tbo22gdxWY5EU2bo=
+github.com/jtolds/gls v4.20.0+incompatible h1:xdiiI2gbIgH/gLH7ADydsJ1uDOEzR8yvV7C0MuV77Wo=
 github.com/jtolds/gls v4.20.0+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
 github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
 github.com/kisielk/errcheck v1.1.0/go.mod h1:EZBBE59ingxPouuu3KfxchcWSUPOHkagtvWXihfKN4Q=
@@ -145,11 +151,13 @@ github.com/klauspost/compress v1.4.0/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0
 github.com/klauspost/compress v1.4.1/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0guNDohfE1A=
 github.com/klauspost/cpuid v0.0.0-20180405133222-e7e905edc00e/go.mod h1:Pj4uuM528wm8OyEC2QMXAi2YiTZ96dNQPGgoMS4s3ek=
 github.com/klauspost/cpuid v1.2.0/go.mod h1:Pj4uuM528wm8OyEC2QMXAi2YiTZ96dNQPGgoMS4s3ek=
+github.com/konsorten/go-windows-terminal-sequences v1.0.1 h1:mweAR1A6xJ3oS2pRaGiHgQ4OO8tzTaLawm8vnODuwDk=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/lib/pq v1.0.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
 github.com/logrusorgru/aurora v0.0.0-20181002194514-a7b3b318ed4e/go.mod h1:7rIyQOR62GCctdiQpZ/zOJlFyk6y+94wXzv6RNZgaR4=
@@ -186,22 +194,24 @@ github.com/nakabonne/nestif v0.3.0 h1:+yOViDGhg8ygGrmII72nV9B/zGxY188TYpfolntsaP
 github.com/nakabonne/nestif v0.3.0/go.mod h1:dI314BppzXjJ4HsCnbo7XzrJHPszZsjnk5wEBSYHI2c=
 github.com/nbutton23/zxcvbn-go v0.0.0-20180912185939-ae427f1e4c1d h1:AREM5mwr4u1ORQBMvzfzBgpsctsbQikCVpvC+tX285E=
 github.com/nbutton23/zxcvbn-go v0.0.0-20180912185939-ae427f1e4c1d/go.mod h1:o96djdrsSGy3AWPyBgZMAGfxZNfgntdJG+11KU4QvbU=
+github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e h1:fD57ERR4JtEqsWbfPhv4DMiApHyliiK5xCTNVSPiaAs=
 github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLANZcx1PVRCS0qkT7pwLkGfwJo4zjcN/Tysno=
 github.com/oklog/ulid v1.3.1/go.mod h1:CirwcVhetQ6Lv90oh/F+FBtV6XMibvdAFo93nm5qn4U=
 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/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
+github.com/onsi/ginkgo v1.12.0 h1:Iw5WCbBcaAAd0fpRb1c9r5YCylv4XDoCSigm1zLevwU=
 github.com/onsi/ginkgo v1.12.0/go.mod h1:oUhWkIvk5aDxtKvDDuw8gItl8pKl42LzjC9KZE0HfGg=
 github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7JYyY=
+github.com/onsi/gomega v1.9.0 h1:R1uwffexN6Pr340GtYRIdZmAiN4J+iw6WG4wog1DUXg=
 github.com/onsi/gomega v1.9.0/go.mod h1:Ho0h+IUsWyvy1OpqCwxlQ/21gkhVunqlU8fDGcoTdcA=
 github.com/pborman/uuid v1.2.0/go.mod h1:X/NO0urCmaxf9VXbdlT7C2Yzkj2IKimNn4k+gtPdI/k=
 github.com/pelletier/go-toml v1.2.0 h1:T5zMGML61Wp+FlcbWjRDT7yAxhJNAiPPLOFECq181zc=
 github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
 github.com/phayes/checkstyle v0.0.0-20170904204023-bfd46e6a821d/go.mod h1:3OzsM7FXDQlpCiw2j81fOmAwQLnZnLGXVKUzeKQXIAw=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
-github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
-github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 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/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
@@ -223,12 +233,16 @@ github.com/securego/gosec/v2 v2.3.0 h1:y/9mCF2WPDbSDpL3QDWZD3HHGrSYw0QSHnCqTfs4J
 github.com/securego/gosec/v2 v2.3.0/go.mod h1:UzeVyUXbxukhLeHKV3VVqo7HdoQR9MrRfFmZYotn8ME=
 github.com/shirou/gopsutil v0.0.0-20190901111213-e4ec7b275ada/go.mod h1:WWnYX4lzhCH5h/3YBfyVA3VbLYjlMZZAQcW9ojMexNc=
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@@ -311,6 +325,7 @@ golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn
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@@ -373,12 +388,15 @@ gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLks
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