BZ2_bzCompress

int BZ2_bzCompress(int param_1,int param_2)

{
  bz_stream *pbVar1;
  int iVar2;
  undefined4 uVar3;
  char cVar4;
  int iVar5;
  
  if (((param_1 == 0) || (pbVar1 = *(bz_stream **)(param_1 + 0x20), pbVar1 == (bz_stream *)0x0)) ||
     (iVar5 = *(int *)pbVar1, iVar5 != param_1)) {
    return -2;
  }
  iVar2 = *(int *)(pbVar1 + 4);
  if (iVar2 == 2) {
    if (param_2 == 0) {
      cVar4 = handle_compress(pbVar1);
      return (-(uint)(cVar4 == '\0') & 0xfffffffd) + 1;
    }
    if (param_2 == 1) {
      uVar3 = *(undefined4 *)(iVar5 + 4);
      *(undefined4 *)(pbVar1 + 4) = 3;
      *(undefined4 *)(pbVar1 + 0xc) = uVar3;
      goto LAB_0028e77e;
    }
    if (param_2 != 2) {
      return -2;
    }
    uVar3 = *(undefined4 *)(iVar5 + 4);
    *(undefined4 *)(pbVar1 + 4) = 4;
    *(undefined4 *)(pbVar1 + 0xc) = uVar3;
  }
  else {
    if (iVar2 < 3) {
      if (iVar2 == 1) {
        return -1;
      }
      return 0;
    }
    if (iVar2 == 3) {
      if (param_2 != 1) {
        return -1;
      }
LAB_0028e77e:
      if (*(int *)(pbVar1 + 0xc) != *(int *)(iVar5 + 4)) {
        return -1;
      }
      handle_compress(*(bz_stream **)(iVar5 + 0x20));
      if (*(int *)(pbVar1 + 0xc) != 0) {
        return 2;
      }
      if ((*(uint *)(pbVar1 + 0x34) < 0x100) && (0 < *(int *)(pbVar1 + 0x38))) {
        return 2;
      }
      if (*(int *)(pbVar1 + 0x50) < *(int *)(pbVar1 + 0x4c)) {
        return 2;
      }
      *(undefined4 *)(pbVar1 + 4) = 2;
      return 1;
    }
    if (iVar2 != 4) {
      return 0;
    }
    if (param_2 != 2) {
      return -1;
    }
  }
  if ((*(int *)(pbVar1 + 0xc) == *(int *)(iVar5 + 4)) &&
     (cVar4 = handle_compress(*(bz_stream **)(iVar5 + 0x20)), cVar4 != '\0')) {
    iVar5 = 3;
    if ((*(int *)(pbVar1 + 0xc) == 0) &&
       (((0xff < *(uint *)(pbVar1 + 0x34) || (*(int *)(pbVar1 + 0x38) < 1)) &&
        (iVar5 = 3, *(int *)(pbVar1 + 0x4c) <= *(int *)(pbVar1 + 0x50))))) {
      *(undefined4 *)(pbVar1 + 4) = 1;
      iVar5 = 4;
    }
    return iVar5;
  }
  return -1;
}