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backend/internal/translator/common/claude_system.go

@@ -0,0 +1,56 @@
+package common
+
+import (
+	"strings"
+
+	"github.com/router-for-me/CLIProxyAPI/v7/internal/util"
+	"github.com/tidwall/gjson"
+)
+
+const (
+	claudeSystemReminderStart = "<system-reminder>"
+	claudeSystemReminderEnd   = "</system-reminder>"
+)
+
+// ClaudeMessageSystemReminderText converts a Claude message-level system value
+// into ordinary user-visible reminder text for non-Claude upstream formats.
+func ClaudeMessageSystemReminderText(content gjson.Result) (string, bool) {
+	parts := claudeSystemTextParts(content)
+	if len(parts) == 0 {
+		return "", false
+	}
+	text := strings.Join(parts, "\n")
+	if strings.TrimSpace(text) == "" {
+		return "", false
+	}
+	return claudeSystemReminderStart + "\n" + text + "\n" + claudeSystemReminderEnd, true
+}
+
+func claudeSystemTextParts(content gjson.Result) []string {
+	if !content.Exists() {
+		return nil
+	}
+	if content.Type == gjson.String {
+		text := content.String()
+		if text == "" || util.IsClaudeCodeAttributionSystemText(text) {
+			return nil
+		}
+		return []string{text}
+	}
+	if !content.IsArray() {
+		return nil
+	}
+	parts := make([]string, 0)
+	content.ForEach(func(_, item gjson.Result) bool {
+		if item.Get("type").String() != "text" {
+			return true
+		}
+		text := item.Get("text").String()
+		if text == "" || util.IsClaudeCodeAttributionSystemText(text) {
+			return true
+		}
+		parts = append(parts, text)
+		return true
+	})
+	return parts
+}