(Re -revision)Change the name of the variable name

Change the general name forward for variables.
Add ColumnAttribute and put shink and right align inside.
Added ShrinkColumn and ExpandColumn.

oviewer/action.go

@@ -425,7 +425,7 @@ func (root *Root) setViewMode(ctx context.Context, modeName string) {
 
 // modeConfig returns the configuration of the specified mode.
 func (root *Root) modeConfig(modeName string) (general, error) {
-	if modeName == generalName {
+	if modeName == nameGeneral {
 		return root.General, nil
 	}
 
@@ -450,27 +450,27 @@ func (root *Root) setConverter(ctx context.Context, name string) {
 
 // alignFormat sets converter type to align.
 func (root *Root) alignFormat(ctx context.Context) {
-	if root.Doc.Converter == alignConv {
+	if root.Doc.Converter == convAlign {
 		root.esFormat(ctx)
 		return
 	}
-	root.setConverter(ctx, alignConv)
+	root.setConverter(ctx, convAlign)
 	root.setMessage("Set align mode")
 }
 
 // rawFormat sets converter type to raw.
 func (root *Root) rawFormat(ctx context.Context) {
-	if root.Doc.Converter == rawConv {
+	if root.Doc.Converter == convRaw {
 		root.esFormat(ctx)
 		return
 	}
-	root.setConverter(ctx, rawConv)
+	root.setConverter(ctx, convRaw)
 	root.setMessage("Set raw mode")
 }
 
 // esFormat sets converter type to es.
 func (root *Root) esFormat(ctx context.Context) {
-	root.setConverter(ctx, esConv)
+	root.setConverter(ctx, convEscaped)
 	root.setMessage("Set es mode")
 }
 
@@ -769,24 +769,33 @@ func (root *Root) bottomSectionLN(ctx context.Context) int {
 	return lN - (root.Doc.topLN + root.Doc.firstLine() - root.Doc.SectionStartPosition)
 }
 
-// shrinkColumnToggle shrinks or expands the current cursor column.
-func (root *Root) shrinkColumnToggle(ctx context.Context) {
-	root.ShrinkColumn(ctx, root.Doc.columnCursor)
+// ShrinkColumn shrinks the specified column.
+func (root *Root) ShrinkColumn(ctx context.Context, cursor int) error {
+	return root.Doc.shrinkColumn(ctx, cursor, true)
 }
 
-// ShrinkColumn shrinks or expands the specified column.
-func (root *Root) ShrinkColumn(ctx context.Context, cursor int) bool {
-	m := root.Doc
-	if root.Doc.Converter != alignConv {
-		root.setMessage("Not align mode")
-		return false
+// ExpandColumn expands the specified column.
+func (root *Root) ExpandColumn(ctx context.Context, cursor int) error {
+	return root.Doc.shrinkColumn(ctx, cursor, false)
+}
+
+// toggleColumnShrink shrinks or expands the current cursor column.
+func (root *Root) toggleColumnShrink(ctx context.Context) {
+	cursor := root.Doc.columnCursor
+	if err := root.Doc.shrinkColumn(ctx, cursor, !root.Doc.alignConv.columnAttrs[cursor].shrink); err != nil {
+		root.setMessage(err.Error())
 	}
-	if cursor >= len(m.alignConv.shrink) {
-		root.setMessage("No column selected")
-		return false
+}
+
+// shinkColumn shrinks or expands the specified column.
+func (m *Document) shrinkColumn(ctx context.Context, cursor int, shrink bool) error {
+	if m.Converter != convAlign {
+		return ErrNotAlignMode
+	}
+	if cursor >= len(m.alignConv.columnAttrs) {
+		return ErrNoColumnSelected
 	}
-	m.alignConv.shrink[cursor] = !m.alignConv.shrink[cursor]
+	m.alignConv.columnAttrs[cursor].shrink = shrink
 	m.ClearCache()
-	root.ViewSync(ctx)
-	return true
+	return nil
 }

oviewer/action_test.go

@@ -1250,7 +1250,7 @@ func TestRoot_modeConfig(t *testing.T) {
 		{
 			name: "testModeConfig general",
 			args: args{
-				modeName: generalName,
+				modeName: nameGeneral,
 			},
 			want:    general{},
 			wantErr: false,
@@ -1527,21 +1527,21 @@ func TestRoot_setConverter(t *testing.T) {
 		{
 			name: "testSetConverterEscape",
 			args: args{
-				name: esConv,
+				name: convEscaped,
 			},
 			want: newESConverter(),
 		},
 		{
 			name: "testSetConverterRaw",
 			args: args{
-				name: rawConv,
+				name: convRaw,
 			},
 			want: newRawConverter(),
 		},
 		{
 			name: "testSetConverterAlign",
 			args: args{
-				name: alignConv,
+				name: convAlign,
 			},
 			want: newAlignConverter(false),
 		},
@@ -1570,45 +1570,49 @@ func TestRoot_ShrinkColumn(t *testing.T) {
 	}
 	type args struct {
 		cursor int
+		shrink bool
 	}
 	tests := []struct {
-		name   string
-		fields fields
-		args   args
-		want   bool
+		name    string
+		fields  fields
+		args    args
+		wantErr bool
 	}{
 		{
 			name: "testShrinkColumn",
 			fields: fields{
 				fileName:  filepath.Join(testdata, "MOCK_DATA.csv"),
-				converter: alignConv,
+				converter: convAlign,
 			},
 			args: args{
 				cursor: 0,
+				shrink: true,
 			},
-			want: true,
+			wantErr: false,
 		},
 		{
 			name: "testShrinkColumnFalse",
 			fields: fields{
 				fileName:  filepath.Join(testdata, "MOCK_DATA.csv"),
-				converter: esConv,
+				converter: convEscaped,
 			},
 			args: args{
 				cursor: 0,
+				shrink: true,
 			},
-			want: false,
+			wantErr: true,
 		},
 		{
 			name: "testShrinkColumnOver",
 			fields: fields{
 				fileName:  filepath.Join(testdata, "MOCK_DATA.csv"),
-				converter: alignConv,
+				converter: convAlign,
 			},
 			args: args{
 				cursor: 20,
+				shrink: true,
 			},
-			want: false,
+			wantErr: true,
 		},
 	}
 	for _, tt := range tests {
@@ -1619,8 +1623,8 @@ func TestRoot_ShrinkColumn(t *testing.T) {
 			root.Doc.Converter = tt.fields.converter
 			root.Doc.ColumnDelimiter = ","
 			root.prepareDraw(ctx)
-			if got := root.ShrinkColumn(ctx, tt.args.cursor); got != tt.want {
-				t.Errorf("Root.ShrinkColumn() = %v, want %v", got, tt.want)
+			if err := root.Doc.shrinkColumn(ctx, tt.args.cursor, tt.args.shrink); (err != nil) != tt.wantErr {
+				t.Errorf("Root.ShrinkColumn() error = %v, wantErr %v", err, tt.wantErr)
 			}
 		})
 	}

oviewer/convert_align.go

@@ -10,24 +10,28 @@ import (
 // It is used to align columns when the delimiter is reached or to align columns by adding spaces to the end of the line.
 type align struct {
 	es           *escapeSequence
+	orgWidths    []int // Original width of each column. This is the width determined by Guesswidth.
 	maxWidths    []int // Maximum width of each column.
-	orgWidths    []int
-	shrink       []bool // Shrink column.
-	rightAlign   []bool // Right align column.
+	columnAttrs  []columnAttribute
 	WidthF       bool
 	delimiter    string
 	delimiterReg *regexp.Regexp
 	count        int
 }
 
+// columnAttribute is a structure that holds the attributes of a column.
+type columnAttribute struct {
+	shrink     bool // Shrink column.
+	rightAlign bool // Right align column.
+}
+
 func newAlignConverter(widthF bool) *align {
 	return &align{
-		es:         newESConverter(),
-		maxWidths:  []int{},
-		shrink:     []bool{},
-		rightAlign: []bool{},
-		count:      0,
-		WidthF:     widthF,
+		es:          newESConverter(),
+		maxWidths:   []int{},
+		columnAttrs: []columnAttribute{},
+		count:       0,
+		WidthF:      widthF,
 	}
 }
 
@@ -185,17 +189,17 @@ func appendSpaces(lc contents, num int) contents {
 }
 
 func (a *align) isShrink(col int) bool {
-	if len(a.shrink) <= col {
+	if len(a.columnAttrs) <= col {
 		return false
 	}
-	return a.shrink[col]
+	return a.columnAttrs[col].shrink
 }
 
 func (a *align) isRightAlign(col int) bool {
-	if len(a.rightAlign) <= col {
+	if len(a.columnAttrs) <= col {
 		return false
 	}
-	return a.rightAlign[col]
+	return a.columnAttrs[col].rightAlign
 }
 
 func countLeftSpaces(lc contents, s int) int {