gistfile1.txt

/*
 * esm-format.bt
 *
 * Michael Spencer <[email protected]>
 *
 * This is a 010 Editor script for parsing Fallout 3 esm/esp files. It does not
 * fully parse sub records or compressed records.
 *
 */
struct SubRecord(uint32 size) {
  char Name[4];
  if (Name == "XXXX") {
    uint16 Unk;
    uint32 Size;
    struct SubRecord subRecord(Size);
  } else {
    uint16 Size;
    if (size == 0)
      char Data[Size];
    else
      char Data[size];
  }
};

struct Record {
  char Name[4];
  uint32 Size;
  if (Name == "GRUP") {
    uint32 Datur;
    uint32 GroupType;
    uint32 DateStamp;
    uint32 Flags;
    local uint32 start = FTell();
    while (FTell() - start < Size - 24) {
      struct Record records;
    }
  } else {
    uint32 Flags1;
    uint32 FormID;
    uint32 Flags2;
    uint32 Flags3;
    if (Flags1 & 0x00040000) {
      uint32 NewSize;
      char Data[Size - 4];
    } else {
      local uint32 start = FTell();
      while (FTell() - start < Size) {
        struct SubRecord subRecords(0);
      }
    }
  }
};

while (!FEof()) {
  Record records;
}