✨Feat: 完成前端郭德纲教学卡片

backend/utils/tool.go

@@ -0,0 +1,26 @@
+package utils
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/tmc/langchaingo/outputparser"
+)
+
+// Parse parses the output of an LLM call.
+func (p outputparser.Defined[T)(T) Parse(text string) (T, error) {
+	var target T
+
+	// Removes '```json' and '```' from the start and end of the text.
+	const opening = "```json"
+	const closing = "```"
+	if text[:len(opening)] != opening || text[len(text)-len(closing):] != closing {
+		return target, nil
+		// return target, fmt.Errorf("input text should start with %s and end with %s", opening, closing)
+	}
+	parseableJSON := text[len(opening) : len(text)-len(closing)]
+	if err := json.Unmarshal([]byte(parseableJSON), &target); err != nil {
+		return target, fmt.Errorf("could not parse generated JSON: %w", err)
+	}
+	return target, nil
+}