Error string should not be capitalized or end with the punctuation mark

examples/1-load/example_load.go

@@ -31,15 +31,15 @@ func main() {
 	filename := args[1]
 	r, err := os.Open(filename)
 	if err != nil {
-		fmt.Printf("Error while opening %v for reading: %v", filename, err)
+		fmt.Printf("error while opening %v for reading: %v", filename, err)
 		return
 	}
 	defer r.Close()
 
 	// try to load the SPDX file's contents as a tag-value file, version 2.2
 	doc, err := tvloader.Load2_2(r)
 	if err != nil {
-		fmt.Printf("Error while parsing %v: %v", filename, err)
+		fmt.Printf("error while parsing %v: %v", filename, err)
 		return
 	}
 
@@ -58,7 +58,7 @@ func main() {
 	// check whether the SPDX file has at least one package that it describes
 	pkgIDs, err := spdxlib.GetDescribedPackageIDs2_2(doc)
 	if err != nil {
-		fmt.Printf("Unable to get describe packages from SPDX document: %v\n", err)
+		fmt.Printf("unable to get describe packages from SPDX document: %v\n", err)
 		return
 	}
 

examples/10-jsonloader/example_json_loader.go

@@ -30,15 +30,15 @@ func main() {
 	fileIn := args[1]
 	r, err := os.Open(fileIn)
 	if err != nil {
-		fmt.Printf("Error while opening %v for reading: %v", fileIn, err)
+		fmt.Printf("error while opening %v for reading: %v", fileIn, err)
 		return
 	}
 	defer r.Close()
 
 	// try to load the SPDX file's contents as a json file, version 2.2
 	doc, err := spdx_json.Load2_2(r)
 	if err != nil {
-		fmt.Printf("Error while parsing %v: %v", args[1], err)
+		fmt.Printf("error while parsing %v: %v", args[1], err)
 		return
 	}
 

examples/11-yamltotv/exampleyamltotv.go

@@ -31,15 +31,15 @@ func main() {
 	fileIn := args[1]
 	r, err := os.Open(fileIn)
 	if err != nil {
-		fmt.Printf("Error while opening %v for reading: %v", fileIn, err)
+		fmt.Printf("error while opening %v for reading: %v", fileIn, err)
 		return
 	}
 	defer r.Close()
 
 	// try to load the SPDX file's contents as a YAML file
 	doc, err := spdx_yaml.Load2_2(r)
 	if err != nil {
-		fmt.Printf("Error while parsing %v: %v", fileIn, err)
+		fmt.Printf("error while parsing %v: %v", fileIn, err)
 		return
 	}
 
@@ -52,15 +52,15 @@ func main() {
 	fileOut := args[2]
 	w, err := os.Create(fileOut)
 	if err != nil {
-		fmt.Printf("Error while opening %v for writing: %v", fileOut, err)
+		fmt.Printf("error while opening %v for writing: %v", fileOut, err)
 		return
 	}
 	defer w.Close()
 
 	// try to save the document to disk as an SPDX tag-value file, version 2.2
 	err = tvsaver.Save2_2(doc, w)
 	if err != nil {
-		fmt.Printf("Error while saving %v: %v", fileOut, err)
+		fmt.Printf("error while saving %v: %v", fileOut, err)
 		return
 	}
 

examples/12-tvtoyaml/exampletvtoyaml.go

@@ -30,15 +30,15 @@ func main() {
 	fileIn := args[1]
 	r, err := os.Open(fileIn)
 	if err != nil {
-		fmt.Printf("Error while opening %v for reading: %v", fileIn, err)
+		fmt.Printf("error while opening %v for reading: %v", fileIn, err)
 		return
 	}
 	defer r.Close()
 
 	// try to load the SPDX file's contents as a tag-value file, version 2.2
 	doc, err := tvloader.Load2_2(r)
 	if err != nil {
-		fmt.Printf("Error while parsing %v: %v", args[1], err)
+		fmt.Printf("error while parsing %v: %v", args[1], err)
 		return
 	}
 
@@ -51,15 +51,15 @@ func main() {
 	fileOut := args[2]
 	w, err := os.Create(fileOut)
 	if err != nil {
-		fmt.Printf("Error while opening %v for writing: %v", fileOut, err)
+		fmt.Printf("error while opening %v for writing: %v", fileOut, err)
 		return
 	}
 	defer w.Close()
 
 	// try to save the document to disk as an YAML file
 	err = spdx_yaml.Save2_2(doc, w)
 	if err != nil {
-		fmt.Printf("Error while saving %v: %v", fileOut, err)
+		fmt.Printf("error while saving %v: %v", fileOut, err)
 		return
 	}
 

examples/13-yamlloader/exampleYAMLLoader.go

@@ -30,15 +30,15 @@ func main() {
 	fileIn := args[1]
 	r, err := os.Open(fileIn)
 	if err != nil {
-		fmt.Printf("Error while opening %v for reading: %v", fileIn, err)
+		fmt.Printf("error while opening %v for reading: %v", fileIn, err)
 		return
 	}
 	defer r.Close()
 
 	// try to load the SPDX file's contents as a json file, version 2.2
 	doc, err := spdx_yaml.Load2_2(r)
 	if err != nil {
-		fmt.Printf("Error while parsing %v: %v", args[1], err)
+		fmt.Printf("error while parsing %v: %v", args[1], err)
 		return
 	}
 

examples/2-load-save/example_load_save.go

@@ -31,15 +31,15 @@ func main() {
 	fileIn := args[1]
 	r, err := os.Open(fileIn)
 	if err != nil {
-		fmt.Printf("Error while opening %v for reading: %v", fileIn, err)
+		fmt.Printf("error while opening %v for reading: %v", fileIn, err)
 		return
 	}
 	defer r.Close()
 
 	// try to load the SPDX file's contents as a tag-value file, version 2.2
 	doc, err := tvloader.Load2_2(r)
 	if err != nil {
-		fmt.Printf("Error while parsing %v: %v", fileIn, err)
+		fmt.Printf("error while parsing %v: %v", fileIn, err)
 		return
 	}
 
@@ -52,15 +52,15 @@ func main() {
 	fileOut := args[2]
 	w, err := os.Create(fileOut)
 	if err != nil {
-		fmt.Printf("Error while opening %v for writing: %v", fileOut, err)
+		fmt.Printf("error while opening %v for writing: %v", fileOut, err)
 		return
 	}
 	defer w.Close()
 
 	// try to save the document to disk as an SPDX tag-value file, version 2.2
 	err = tvsaver.Save2_2(doc, w)
 	if err != nil {
-		fmt.Printf("Error while saving %v: %v", fileOut, err)
+		fmt.Printf("error while saving %v: %v", fileOut, err)
 		return
 	}
 

examples/3-build/example_build.go

@@ -89,7 +89,7 @@ func main() {
 	//   - the config object we just defined.
 	doc, err := builder.Build2_2(packageName, packageRootDir, config)
 	if err != nil {
-		fmt.Printf("Error while building document: %v\n", err)
+		fmt.Printf("error while building document: %v\n", err)
 		return
 	}
 
@@ -103,14 +103,14 @@ func main() {
 	// create a new file for writing
 	w, err := os.Create(fileOut)
 	if err != nil {
-		fmt.Printf("Error while opening %v for writing: %v\n", fileOut, err)
+		fmt.Printf("error while opening %v for writing: %v\n", fileOut, err)
 		return
 	}
 	defer w.Close()
 
 	err = tvsaver.Save2_2(doc, w)
 	if err != nil {
-		fmt.Printf("Error while saving %v: %v", fileOut, err)
+		fmt.Printf("error while saving %v: %v", fileOut, err)
 		return
 	}
 

examples/9-tvtojson/exampletvtojson.go

@@ -30,15 +30,15 @@ func main() {
 	fileIn := args[1]
 	r, err := os.Open(fileIn)
 	if err != nil {
-		fmt.Printf("Error while opening %v for reading: %v", fileIn, err)
+		fmt.Printf("error while opening %v for reading: %v", fileIn, err)
 		return
 	}
 	defer r.Close()
 
 	// try to load the SPDX file's contents as a tag-value file, version 2.2
 	doc, err := tvloader.Load2_2(r)
 	if err != nil {
-		fmt.Printf("Error while parsing %v: %v", args[1], err)
+		fmt.Printf("error while parsing %v: %v", args[1], err)
 		return
 	}
 
@@ -51,15 +51,15 @@ func main() {
 	fileOut := args[2]
 	w, err := os.Create(fileOut)
 	if err != nil {
-		fmt.Printf("Error while opening %v for writing: %v", fileOut, err)
+		fmt.Printf("error while opening %v for writing: %v", fileOut, err)
 		return
 	}
 	defer w.Close()
 
 	// try to save the document to disk as JSON file
 	err = spdx_json.Save2_2(doc, w)
 	if err != nil {
-		fmt.Printf("Error while saving %v: %v", fileOut, err)
+		fmt.Printf("error while saving %v: %v", fileOut, err)
 		return
 	}
 

json/json_v2_2_test.go

@@ -30,7 +30,7 @@ func TestLoad2_2(t *testing.T) {
 	handwrittenExample := want2_2
 
 	if cmp.Equal(handwrittenExample, got) {
-		t.Errorf("Got incorrect struct after parsing JSON example")
+		t.Errorf("got incorrect struct after parsing JSON example")
 		return
 	}
 }
@@ -52,7 +52,7 @@ func TestWrite2_2(t *testing.T) {
 	}
 
 	if cmp.Equal(handwrittenExample, parsedDoc) {
-		t.Errorf("Got incorrect struct after writing and re-parsing JSON example")
+		t.Errorf("got incorrect struct after writing and re-parsing JSON example")
 		return
 	}
 }

json/json_v2_3_test.go

@@ -47,7 +47,7 @@ func TestLoad2_3(t *testing.T) {
 	handwrittenExample := want2_3
 
 	if cmp.Equal(handwrittenExample, got) {
-		t.Errorf("Got incorrect struct after parsing JSON example")
+		t.Errorf("got incorrect struct after parsing JSON example")
 		return
 	}
 }
@@ -69,7 +69,7 @@ func TestWrite2_3(t *testing.T) {
 	}
 
 	if cmp.Equal(handwrittenExample, parsedDoc) {
-		t.Errorf("Got incorrect struct after writing and re-parsing JSON example")
+		t.Errorf("got incorrect struct after writing and re-parsing JSON example")
 		return
 	}
 }