Enhance parseArgsToMap with tolerant JSON parsing

- Introduced `tolerantParseJSONMap` to handle bareword values in streamed tool calls.
- Added robust handling for JSON strings, objects, arrays, and numerical values.
- Improved fallback mechanisms to ensure reliable parsing.
This commit is contained in:
Luis Pater
2025-09-03 16:11:26 +08:00
parent caf386c877
commit 6d2f7e3ce0

View File

@@ -8,6 +8,7 @@ package gemini
import (
"context"
"encoding/json"
"strconv"
"strings"
"github.com/tidwall/gjson"
@@ -248,14 +249,253 @@ func parseArgsToMap(argsStr string) map[string]interface{} {
if trimmed == "" || trimmed == "{}" {
return map[string]interface{}{}
}
// First try strict JSON
var out map[string]interface{}
if err := json.Unmarshal([]byte(trimmed), &out); err == nil {
if errUnmarshal := json.Unmarshal([]byte(trimmed), &out); errUnmarshal == nil {
return out
}
// Tolerant parse: handle streams where values are barewords (e.g., 北京, celsius)
tolerant := tolerantParseJSONMap(trimmed)
if len(tolerant) > 0 {
return tolerant
}
// Fallback: return empty object when parsing fails
return map[string]interface{}{}
}
// tolerantParseJSONMap attempts to parse a JSON-like object string into a map, tolerating
// bareword values (unquoted strings) commonly seen during streamed tool calls.
// Example input: {"location": 北京, "unit": celsius}
func tolerantParseJSONMap(s string) map[string]interface{} {
// Ensure we operate within the outermost braces if present
start := strings.Index(s, "{")
end := strings.LastIndex(s, "}")
if start == -1 || end == -1 || start >= end {
return map[string]interface{}{}
}
content := s[start+1 : end]
runes := []rune(content)
n := len(runes)
i := 0
result := make(map[string]interface{})
for i < n {
// Skip whitespace and commas
for i < n && (runes[i] == ' ' || runes[i] == '\n' || runes[i] == '\r' || runes[i] == '\t' || runes[i] == ',') {
i++
}
if i >= n {
break
}
// Expect quoted key
if runes[i] != '"' {
// Unable to parse this segment reliably; skip to next comma
for i < n && runes[i] != ',' {
i++
}
continue
}
// Parse JSON string for key
keyToken, nextIdx := parseJSONStringRunes(runes, i)
if nextIdx == -1 {
break
}
keyName := jsonStringTokenToRawString(keyToken)
i = nextIdx
// Skip whitespace
for i < n && (runes[i] == ' ' || runes[i] == '\n' || runes[i] == '\r' || runes[i] == '\t') {
i++
}
if i >= n || runes[i] != ':' {
break
}
i++ // skip ':'
// Skip whitespace
for i < n && (runes[i] == ' ' || runes[i] == '\n' || runes[i] == '\r' || runes[i] == '\t') {
i++
}
if i >= n {
break
}
// Parse value (string, number, object/array, bareword)
var value interface{}
switch runes[i] {
case '"':
// JSON string
valToken, ni := parseJSONStringRunes(runes, i)
if ni == -1 {
// Malformed; treat as empty string
value = ""
i = n
} else {
value = jsonStringTokenToRawString(valToken)
i = ni
}
case '{', '[':
// Bracketed value: attempt to capture balanced structure
seg, ni := captureBracketed(runes, i)
if ni == -1 {
i = n
} else {
var anyVal interface{}
if errUnmarshal := json.Unmarshal([]byte(seg), &anyVal); errUnmarshal == nil {
value = anyVal
} else {
value = seg
}
i = ni
}
default:
// Bare token until next comma or end
j := i
for j < n && runes[j] != ',' {
j++
}
token := strings.TrimSpace(string(runes[i:j]))
// Interpret common JSON atoms and numbers; otherwise treat as string
if token == "true" {
value = true
} else if token == "false" {
value = false
} else if token == "null" {
value = nil
} else if numVal, ok := tryParseNumber(token); ok {
value = numVal
} else {
value = token
}
i = j
}
result[keyName] = value
// Skip trailing whitespace and optional comma before next pair
for i < n && (runes[i] == ' ' || runes[i] == '\n' || runes[i] == '\r' || runes[i] == '\t') {
i++
}
if i < n && runes[i] == ',' {
i++
}
}
return result
}
// parseJSONStringRunes returns the JSON string token (including quotes) and the index just after it.
func parseJSONStringRunes(runes []rune, start int) (string, int) {
if start >= len(runes) || runes[start] != '"' {
return "", -1
}
i := start + 1
escaped := false
for i < len(runes) {
r := runes[i]
if r == '\\' && !escaped {
escaped = true
i++
continue
}
if r == '"' && !escaped {
return string(runes[start : i+1]), i + 1
}
escaped = false
i++
}
return string(runes[start:]), -1
}
// jsonStringTokenToRawString converts a JSON string token (including quotes) to a raw Go string value.
func jsonStringTokenToRawString(token string) string {
var s string
if errUnmarshal := json.Unmarshal([]byte(token), &s); errUnmarshal == nil {
return s
}
// Fallback: strip surrounding quotes if present
if len(token) >= 2 && token[0] == '"' && token[len(token)-1] == '"' {
return token[1 : len(token)-1]
}
return token
}
// captureBracketed captures a balanced JSON object/array starting at index i.
// Returns the segment string and the index just after it; -1 if malformed.
func captureBracketed(runes []rune, i int) (string, int) {
if i >= len(runes) {
return "", -1
}
startRune := runes[i]
var endRune rune
if startRune == '{' {
endRune = '}'
} else if startRune == '[' {
endRune = ']'
} else {
return "", -1
}
depth := 0
j := i
inStr := false
escaped := false
for j < len(runes) {
r := runes[j]
if inStr {
if r == '\\' && !escaped {
escaped = true
j++
continue
}
if r == '"' && !escaped {
inStr = false
} else {
escaped = false
}
j++
continue
}
if r == '"' {
inStr = true
j++
continue
}
if r == startRune {
depth++
} else if r == endRune {
depth--
if depth == 0 {
return string(runes[i : j+1]), j + 1
}
}
j++
}
return string(runes[i:]), -1
}
// tryParseNumber attempts to parse a string as an int or float.
func tryParseNumber(s string) (interface{}, bool) {
if s == "" {
return nil, false
}
// Try integer
if i64, errParseInt := strconv.ParseInt(s, 10, 64); errParseInt == nil {
return i64, true
}
if u64, errParseUInt := strconv.ParseUint(s, 10, 64); errParseUInt == nil {
return u64, true
}
if f64, errParseFloat := strconv.ParseFloat(s, 64); errParseFloat == nil {
return f64, true
}
return nil, false
}
// ConvertOpenAIResponseToGeminiNonStream converts a non-streaming OpenAI response to a non-streaming Gemini response.
//
// Parameters: