_is_valid_include_pattern() — langchain Function Reference

Architecture documentation for the _is_valid_include_pattern() function in file_search.py from the langchain codebase.

Function python LangChainCore Runnables calls 1 called by 1

Entity Profile

LangChainCore→ Runnables→ _is_valid_include_pattern() — langchain Function Reference

Dependency Diagram

graph TD
  943f681c_e0cd_4a26_5c61_e9c06d70955a["_is_valid_include_pattern()"]
  7e138deb_72a0_c3b2_9372_a9429bc90819["file_search.py"]
  943f681c_e0cd_4a26_5c61_e9c06d70955a -->|defined in| 7e138deb_72a0_c3b2_9372_a9429bc90819
  99cb0385_d25f_ae58_a625_e8187615e060["__init__()"]
  99cb0385_d25f_ae58_a625_e8187615e060 -->|calls| 943f681c_e0cd_4a26_5c61_e9c06d70955a
  ef2e07ee_ee8e_f087_ecc5_334345441c90["_expand_include_patterns()"]
  943f681c_e0cd_4a26_5c61_e9c06d70955a -->|calls| ef2e07ee_ee8e_f087_ecc5_334345441c90
  style 943f681c_e0cd_4a26_5c61_e9c06d70955a fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain_v1/langchain/agents/middleware/file_search.py lines 57–75

def _is_valid_include_pattern(pattern: str) -> bool:
    """Validate glob pattern used for include filters."""
    if not pattern:
        return False

    if any(char in pattern for char in ("\x00", "\n", "\r")):
        return False

    expanded = _expand_include_patterns(pattern)
    if expanded is None:
        return False

    try:
        for candidate in expanded:
            re.compile(fnmatch.translate(candidate))
    except re.error:
        return False

    return True