chore: 并入 iotlcm-admin-svr 历史到 admin-svr/（原提交 49818c6）

admin-svr/server/internal/library/batchinput/text/lines.go

@@ -0,0 +1,59 @@
+package text
+
+import (
+	"context"
+	"errors"
+	"strings"
+)
+
+var ErrEmptyInput = errors.New("batch input content cannot be empty")
+
+type Line struct {
+	RowNo int
+	Text  string
+}
+
+type FieldLine struct {
+	RowNo  int
+	Fields []string
+}
+
+func ParseNonEmptyLines(ctx context.Context, input string) ([]Line, error) {
+	lines := strings.Split(input, "\n")
+	result := make([]Line, 0, len(lines))
+	for index, line := range lines {
+		if err := ctx.Err(); err != nil {
+			return nil, err
+		}
+		value := strings.TrimSpace(line)
+		if value == "" {
+			continue
+		}
+		result = append(result, Line{
+			RowNo: index + 1,
+			Text:  value,
+		})
+	}
+	if len(result) == 0 {
+		return nil, ErrEmptyInput
+	}
+	return result, nil
+}
+
+func ParseWhitespaceFields(ctx context.Context, input string) ([]FieldLine, error) {
+	lines, err := ParseNonEmptyLines(ctx, input)
+	if err != nil {
+		return nil, err
+	}
+	result := make([]FieldLine, 0, len(lines))
+	for _, line := range lines {
+		if err = ctx.Err(); err != nil {
+			return nil, err
+		}
+		result = append(result, FieldLine{
+			RowNo:  line.RowNo,
+			Fields: strings.Fields(line.Text),
+		})
+	}
+	return result, nil
+}