gr

cmd/main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"bytes"
+	"fmt"
 	"io"
 	"io/ioutil"
 	"log"
@@ -59,7 +60,7 @@ func dedupe(config *config) error {
 
 	var base pttodo.Root
 	if err := yaml.Unmarshal(baseB, &base); err != nil {
-		return err
+		return fmt.Errorf("failed to parse yaml in %s: %w", config.target, err)
 	}
 
 	do := func(todos []pttodo.Todo) []pttodo.Todo {
@@ -120,10 +121,10 @@ func archive(config *config) error {
 
 	var base, archive pttodo.Root
 	if err := yaml.Unmarshal(baseB, &base); err != nil {
-		return err
+		return fmt.Errorf("failed to parse yaml in %s: %w", config.target, err)
 	}
 	if err := yaml.Unmarshal(archiveB, &archive); err != nil {
-		return err
+		return fmt.Errorf("failed to parse yaml in %s: %w", config.archive, err)
 	}
 
 	archive.Done = append(archive.Done, base.Done...)
@@ -174,10 +175,10 @@ func merge(config *config) error {
 
 	var base, merging pttodo.Root
 	if err := yaml.Unmarshal(baseB, &base); err != nil {
-		return err
+		return fmt.Errorf("failed to parse yaml in %s: %w", config.target, err)
 	}
 	if err := yaml.Unmarshal(mergingB, &merging); err != nil {
-		return err
+		return fmt.Errorf("failed to parse yaml in %s: %w", config.target2, err)
 	}
 
 	slurp := func(dst, src *[]pttodo.Todo) {
@@ -242,10 +243,10 @@ func _merge(filepath string, mergeTargetFilePath string) error {
 
 	var base, merging pttodo.Root
 	if err := yaml.Unmarshal(baseB, &base); err != nil {
-		return err
+		return fmt.Errorf("failed to parse yaml in %s: %w", filepath, err)
 	}
 	if err := yaml.Unmarshal(mergingB, &merging); err != nil {
-		return err
+		return fmt.Errorf("failed to parse yaml in %s: %w", mergeTargetFilePath, err)
 	}
 
 	base.MergeIn(merging)

pttodo/root.go

@@ -2,6 +2,7 @@ package pttodo
 
 import (
 	"bytes"
+	"fmt"
 	"os"
 
 	yaml "gopkg.in/yaml.v2"
@@ -44,7 +45,7 @@ func NewRootFromFile(p string) (Root, error) {
 	if err := yaml.NewDecoder(f).Decode(&result); err != nil {
 		todos, err2 := NewTodosFromFile(p)
 		if err2 != nil {
-			return Root{}, err
+			return Root{}, fmt.Errorf("failed to parse yaml from %s: %w", p, err)
 		}
 		result.Todo = todos
 	}

pttodo/schedule.go

@@ -2,6 +2,7 @@ package pttodo
 
 import (
 	"encoding/json"
+	"fmt"
 	"math"
 	"regexp"
 	"strconv"
@@ -17,7 +18,10 @@ func (schedule Schedule) MarshalJSON() ([]byte, error) {
 }
 
 func (schedule *Schedule) UnmarshalJSON(b []byte) error {
-	return json.Unmarshal(b, (*string)(schedule))
+	if err := json.Unmarshal(b, (*string)(schedule)); err != nil {
+		return fmt.Errorf("failed to parse json from %q: %w", b, err)
+	}
+	return nil
 }
 
 func (schedule Schedule) Next(t time.Time) (time.Time, error) {

pttodo/todo.go

@@ -32,7 +32,7 @@ func NewTodosFromFile(p string) ([]Todo, error) {
 
 	var result []Todo
 	if err := yaml.NewDecoder(f).Decode(&result); err != nil {
-		return nil, err
+		return nil, fmt.Errorf("failed to parse yaml from %s: %w", p, err)
 	}
 
 	return result, nil

pttodo/ts.go

@@ -3,6 +3,7 @@ package pttodo
 import (
 	"encoding/json"
 	"errors"
+	"fmt"
 	"time"
 
 	yaml "gopkg.in/yaml.v2"
@@ -33,7 +34,10 @@ func (ts TS) MarshalYAML() (interface{}, error) {
 }
 
 func (ts *TS) UnmarshalJSON(b []byte) error {
-	return yaml.Unmarshal(b, ts)
+	if err := yaml.Unmarshal(b, ts); err != nil {
+		return fmt.Errorf("faild to unmarshal TS from %q: %w", b, err)
+	}
+	return nil
 }
 
 func (ts *TS) UnmarshalYAML(unmarshaller func(interface{}) error) error {