Fixed: #137

refactor: simplify ConvertCodexResponseToClaudeNonStream by removing bufio.Scanner usage and restructuring response parsing logic

internal/translator/codex/claude/codex_claude_response.go

@@ -7,7 +7,6 @@
 package claude
 
 import (
-	"bufio"
 	"bytes"
 	"context"
 	"encoding/json"
@@ -180,56 +179,58 @@ func ConvertCodexResponseToClaude(_ context.Context, _ string, originalRequestRa
 // Returns:
 //   - string: A Claude Code-compatible JSON response containing all message content and metadata
 func ConvertCodexResponseToClaudeNonStream(_ context.Context, _ string, originalRequestRawJSON, _ []byte, rawJSON []byte, _ *any) string {
-	scanner := bufio.NewScanner(bytes.NewReader(rawJSON))
-	buffer := make([]byte, 20_971_520)
-	scanner.Buffer(buffer, 20_971_520)
 	revNames := buildReverseMapFromClaudeOriginalShortToOriginal(originalRequestRawJSON)
 
-	for scanner.Scan() {
-		line := scanner.Bytes()
-		if !bytes.HasPrefix(line, dataTag) {
-			continue
-		}
-		payload := bytes.TrimSpace(line[len(dataTag):])
-		if len(payload) == 0 {
-			continue
-		}
+	rootResult := gjson.ParseBytes(rawJSON)
+	if rootResult.Get("type").String() != "response.completed" {
+		return ""
+	}
 
-		rootResult := gjson.ParseBytes(payload)
-		if rootResult.Get("type").String() != "response.completed" {
-			continue
-		}
+	responseData := rootResult.Get("response")
+	if !responseData.Exists() {
+		return ""
+	}
 
-		responseData := rootResult.Get("response")
-		if !responseData.Exists() {
-			continue
-		}
+	response := map[string]interface{}{
+		"id":            responseData.Get("id").String(),
+		"type":          "message",
+		"role":          "assistant",
+		"model":         responseData.Get("model").String(),
+		"content":       []interface{}{},
+		"stop_reason":   nil,
+		"stop_sequence": nil,
+		"usage": map[string]interface{}{
+			"input_tokens":  responseData.Get("usage.input_tokens").Int(),
+			"output_tokens": responseData.Get("usage.output_tokens").Int(),
+		},
+	}
 
-		response := map[string]interface{}{
-			"id":            responseData.Get("id").String(),
-			"type":          "message",
-			"role":          "assistant",
-			"model":         responseData.Get("model").String(),
-			"content":       []interface{}{},
-			"stop_reason":   nil,
-			"stop_sequence": nil,
-			"usage": map[string]interface{}{
-				"input_tokens":  responseData.Get("usage.input_tokens").Int(),
-				"output_tokens": responseData.Get("usage.output_tokens").Int(),
-			},
-		}
+	var contentBlocks []interface{}
+	hasToolCall := false
 
-		var contentBlocks []interface{}
-		hasToolCall := false
-
-		if output := responseData.Get("output"); output.Exists() && output.IsArray() {
-			output.ForEach(func(_, item gjson.Result) bool {
-				switch item.Get("type").String() {
-				case "reasoning":
-					thinkingBuilder := strings.Builder{}
-					if summary := item.Get("summary"); summary.Exists() {
-						if summary.IsArray() {
-							summary.ForEach(func(_, part gjson.Result) bool {
+	if output := responseData.Get("output"); output.Exists() && output.IsArray() {
+		output.ForEach(func(_, item gjson.Result) bool {
+			switch item.Get("type").String() {
+			case "reasoning":
+				thinkingBuilder := strings.Builder{}
+				if summary := item.Get("summary"); summary.Exists() {
+					if summary.IsArray() {
+						summary.ForEach(func(_, part gjson.Result) bool {
+							if txt := part.Get("text"); txt.Exists() {
+								thinkingBuilder.WriteString(txt.String())
+							} else {
+								thinkingBuilder.WriteString(part.String())
+							}
+							return true
+						})
+					} else {
+						thinkingBuilder.WriteString(summary.String())
+					}
+				}
+				if thinkingBuilder.Len() == 0 {
+					if content := item.Get("content"); content.Exists() {
+						if content.IsArray() {
+							content.ForEach(func(_, part gjson.Result) bool {
 								if txt := part.Get("text"); txt.Exists() {
 									thinkingBuilder.WriteString(txt.String())
 								} else {
@@ -238,114 +239,96 @@ func ConvertCodexResponseToClaudeNonStream(_ context.Context, _ string, original
 								return true
 							})
 						} else {
-							thinkingBuilder.WriteString(summary.String())
+							thinkingBuilder.WriteString(content.String())
 						}
 					}
-					if thinkingBuilder.Len() == 0 {
-						if content := item.Get("content"); content.Exists() {
-							if content.IsArray() {
-								content.ForEach(func(_, part gjson.Result) bool {
-									if txt := part.Get("text"); txt.Exists() {
-										thinkingBuilder.WriteString(txt.String())
-									} else {
-										thinkingBuilder.WriteString(part.String())
-									}
-									return true
-								})
-							} else {
-								thinkingBuilder.WriteString(content.String())
-							}
-						}
-					}
-					if thinkingBuilder.Len() > 0 {
-						contentBlocks = append(contentBlocks, map[string]interface{}{
-							"type":     "thinking",
-							"thinking": thinkingBuilder.String(),
-						})
-					}
-				case "message":
-					if content := item.Get("content"); content.Exists() {
-						if content.IsArray() {
-							content.ForEach(func(_, part gjson.Result) bool {
-								if part.Get("type").String() == "output_text" {
-									text := part.Get("text").String()
-									if text != "" {
-										contentBlocks = append(contentBlocks, map[string]interface{}{
-											"type": "text",
-											"text": text,
-										})
-									}
-								}
-								return true
-							})
-						} else {
-							text := content.String()
-							if text != "" {
-								contentBlocks = append(contentBlocks, map[string]interface{}{
-									"type": "text",
-									"text": text,
-								})
-							}
-						}
-					}
-				case "function_call":
-					hasToolCall = true
-					name := item.Get("name").String()
-					if original, ok := revNames[name]; ok {
-						name = original
-					}
-
-					toolBlock := map[string]interface{}{
-						"type":  "tool_use",
-						"id":    item.Get("call_id").String(),
-						"name":  name,
-						"input": map[string]interface{}{},
-					}
-
-					if argsStr := item.Get("arguments").String(); argsStr != "" {
-						var args interface{}
-						if err := json.Unmarshal([]byte(argsStr), &args); err == nil {
-							toolBlock["input"] = args
-						}
-					}
-
-					contentBlocks = append(contentBlocks, toolBlock)
 				}
-				return true
-			})
-		}
+				if thinkingBuilder.Len() > 0 {
+					contentBlocks = append(contentBlocks, map[string]interface{}{
+						"type":     "thinking",
+						"thinking": thinkingBuilder.String(),
+					})
+				}
+			case "message":
+				if content := item.Get("content"); content.Exists() {
+					if content.IsArray() {
+						content.ForEach(func(_, part gjson.Result) bool {
+							if part.Get("type").String() == "output_text" {
+								text := part.Get("text").String()
+								if text != "" {
+									contentBlocks = append(contentBlocks, map[string]interface{}{
+										"type": "text",
+										"text": text,
+									})
+								}
+							}
+							return true
+						})
+					} else {
+						text := content.String()
+						if text != "" {
+							contentBlocks = append(contentBlocks, map[string]interface{}{
+								"type": "text",
+								"text": text,
+							})
+						}
+					}
+				}
+			case "function_call":
+				hasToolCall = true
+				name := item.Get("name").String()
+				if original, ok := revNames[name]; ok {
+					name = original
+				}
 
-		if len(contentBlocks) > 0 {
-			response["content"] = contentBlocks
-		}
+				toolBlock := map[string]interface{}{
+					"type":  "tool_use",
+					"id":    item.Get("call_id").String(),
+					"name":  name,
+					"input": map[string]interface{}{},
+				}
 
-		if stopReason := responseData.Get("stop_reason"); stopReason.Exists() && stopReason.String() != "" {
-			response["stop_reason"] = stopReason.String()
-		} else if hasToolCall {
-			response["stop_reason"] = "tool_use"
-		} else {
-			response["stop_reason"] = "end_turn"
-		}
+				if argsStr := item.Get("arguments").String(); argsStr != "" {
+					var args interface{}
+					if err := json.Unmarshal([]byte(argsStr), &args); err == nil {
+						toolBlock["input"] = args
+					}
+				}
 
-		if stopSequence := responseData.Get("stop_sequence"); stopSequence.Exists() && stopSequence.String() != "" {
-			response["stop_sequence"] = stopSequence.Value()
-		}
-
-		if responseData.Get("usage.input_tokens").Exists() || responseData.Get("usage.output_tokens").Exists() {
-			response["usage"] = map[string]interface{}{
-				"input_tokens":  responseData.Get("usage.input_tokens").Int(),
-				"output_tokens": responseData.Get("usage.output_tokens").Int(),
+				contentBlocks = append(contentBlocks, toolBlock)
 			}
-		}
-
-		responseJSON, err := json.Marshal(response)
-		if err != nil {
-			return ""
-		}
-		return string(responseJSON)
+			return true
+		})
 	}
 
-	return ""
+	if len(contentBlocks) > 0 {
+		response["content"] = contentBlocks
+	}
+
+	if stopReason := responseData.Get("stop_reason"); stopReason.Exists() && stopReason.String() != "" {
+		response["stop_reason"] = stopReason.String()
+	} else if hasToolCall {
+		response["stop_reason"] = "tool_use"
+	} else {
+		response["stop_reason"] = "end_turn"
+	}
+
+	if stopSequence := responseData.Get("stop_sequence"); stopSequence.Exists() && stopSequence.String() != "" {
+		response["stop_sequence"] = stopSequence.Value()
+	}
+
+	if responseData.Get("usage.input_tokens").Exists() || responseData.Get("usage.output_tokens").Exists() {
+		response["usage"] = map[string]interface{}{
+			"input_tokens":  responseData.Get("usage.input_tokens").Int(),
+			"output_tokens": responseData.Get("usage.output_tokens").Int(),
+		}
+	}
+
+	responseJSON, err := json.Marshal(response)
+	if err != nil {
+		return ""
+	}
+	return string(responseJSON)
 }
 
 // buildReverseMapFromClaudeOriginalShortToOriginal builds a map[short]original from original Claude request tools.

internal/translator/openai/claude/openai_claude_response.go

@@ -466,7 +466,7 @@ func ConvertOpenAIResponseToClaudeNonStream(_ context.Context, _ string, origina
 		},
 	}
 
-	var contentBlocks []interface{}
+	contentBlocks := make([]interface{}, 0)
 	hasToolCall := false
 
 	if choices := root.Get("choices"); choices.Exists() && choices.IsArray() && len(choices.Array()) > 0 {
@@ -477,80 +477,90 @@ func ConvertOpenAIResponseToClaudeNonStream(_ context.Context, _ string, origina
 		}
 
 		if message := choice.Get("message"); message.Exists() {
-			if contentArray := message.Get("content"); contentArray.Exists() && contentArray.IsArray() {
-				var textBuilder strings.Builder
-				var thinkingBuilder strings.Builder
+			if contentResult := message.Get("content"); contentResult.Exists() {
+				if contentResult.IsArray() {
+					var textBuilder strings.Builder
+					var thinkingBuilder strings.Builder
 
-				flushText := func() {
-					if textBuilder.Len() == 0 {
-						return
+					flushText := func() {
+						if textBuilder.Len() == 0 {
+							return
+						}
+						contentBlocks = append(contentBlocks, map[string]interface{}{
+							"type": "text",
+							"text": textBuilder.String(),
+						})
+						textBuilder.Reset()
 					}
-					contentBlocks = append(contentBlocks, map[string]interface{}{
-						"type": "text",
-						"text": textBuilder.String(),
-					})
-					textBuilder.Reset()
-				}
 
-				flushThinking := func() {
-					if thinkingBuilder.Len() == 0 {
-						return
+					flushThinking := func() {
+						if thinkingBuilder.Len() == 0 {
+							return
+						}
+						contentBlocks = append(contentBlocks, map[string]interface{}{
+							"type":     "thinking",
+							"thinking": thinkingBuilder.String(),
+						})
+						thinkingBuilder.Reset()
 					}
-					contentBlocks = append(contentBlocks, map[string]interface{}{
-						"type":     "thinking",
-						"thinking": thinkingBuilder.String(),
-					})
-					thinkingBuilder.Reset()
-				}
 
-				for _, item := range contentArray.Array() {
-					typeStr := item.Get("type").String()
-					switch typeStr {
-					case "text":
-						flushThinking()
-						textBuilder.WriteString(item.Get("text").String())
-					case "tool_calls":
-						flushThinking()
-						flushText()
-						toolCalls := item.Get("tool_calls")
-						if toolCalls.IsArray() {
-							toolCalls.ForEach(func(_, tc gjson.Result) bool {
-								hasToolCall = true
-								toolUse := map[string]interface{}{
-									"type": "tool_use",
-									"id":   tc.Get("id").String(),
-									"name": tc.Get("function.name").String(),
-								}
+					for _, item := range contentResult.Array() {
+						typeStr := item.Get("type").String()
+						switch typeStr {
+						case "text":
+							flushThinking()
+							textBuilder.WriteString(item.Get("text").String())
+						case "tool_calls":
+							flushThinking()
+							flushText()
+							toolCalls := item.Get("tool_calls")
+							if toolCalls.IsArray() {
+								toolCalls.ForEach(func(_, tc gjson.Result) bool {
+									hasToolCall = true
+									toolUse := map[string]interface{}{
+										"type": "tool_use",
+										"id":   tc.Get("id").String(),
+										"name": tc.Get("function.name").String(),
+									}
 
-								argsStr := util.FixJSON(tc.Get("function.arguments").String())
-								if argsStr != "" {
-									var parsed interface{}
-									if err := json.Unmarshal([]byte(argsStr), &parsed); err == nil {
-										toolUse["input"] = parsed
+									argsStr := util.FixJSON(tc.Get("function.arguments").String())
+									if argsStr != "" {
+										var parsed interface{}
+										if err := json.Unmarshal([]byte(argsStr), &parsed); err == nil {
+											toolUse["input"] = parsed
+										} else {
+											toolUse["input"] = map[string]interface{}{}
+										}
 									} else {
 										toolUse["input"] = map[string]interface{}{}
 									}
-								} else {
-									toolUse["input"] = map[string]interface{}{}
-								}
 
-								contentBlocks = append(contentBlocks, toolUse)
-								return true
-							})
+									contentBlocks = append(contentBlocks, toolUse)
+									return true
+								})
+							}
+						case "reasoning":
+							flushText()
+							if thinking := item.Get("text"); thinking.Exists() {
+								thinkingBuilder.WriteString(thinking.String())
+							}
+						default:
+							flushThinking()
+							flushText()
 						}
-					case "reasoning":
-						flushText()
-						if thinking := item.Get("text"); thinking.Exists() {
-							thinkingBuilder.WriteString(thinking.String())
-						}
-					default:
-						flushThinking()
-						flushText()
+					}
+
+					flushThinking()
+					flushText()
+				} else if contentResult.Type == gjson.String {
+					textContent := contentResult.String()
+					if textContent != "" {
+						contentBlocks = append(contentBlocks, map[string]interface{}{
+							"type": "text",
+							"text": textContent,
+						})
 					}
 				}
-
-				flushThinking()
-				flushText()
 			}
 
 			if toolCalls := message.Get("tool_calls"); toolCalls.Exists() && toolCalls.IsArray() {