// 
// _wcstombs_l_helper from 0x18012b490 to 0x18012b7eb (859 bytes)
// 
// 2 xrefs:
// > wcstombs @ 0x18012b7ef
// > <???> @ 0x180202b1c
// 
// This function is hookable on this platform!
// 
// Using BromaIDA 8.0.0 @ https://github.com/Stazzical/BromaIDA
// Using bindings at commit ba9f177b at Thu Jul 16 22:52:06 2026 from https://github.com/geode-sdk/bindings
// 

// Hidden C++ exception states: #wind=1
unsigned __int64 __fastcall _wcstombs_l_helper(
        __crt_mbstring *this,
        const wchar_t *a2,
        const wchar_t **a3,
        struct __crt_locale_pointers *a4)
{
  const wchar_t **v4; // rsi
  __int64 v6; // rbx
  int v8; // r10d
  unsigned __int16 *v9; // rcx
  __int16 v10; // ax
  int *v11; // rax
  unsigned __int16 *v12; // rax
  const wchar_t **v13; // rcx
  int v14; // eax
  int v15; // eax
  unsigned __int64 v16; // rdi
  int v17; // edx
  int v18; // eax
  int v19; // eax
  __int64 v20; // rdx
  __int64 v21; // rcx
  char v22; // al
  unsigned __int16 *v23; // rcx
  unsigned __int16 v24; // ax
  int v25; // eax
  struct _Mbstatet *v26; // [rsp+20h] [rbp-49h]
  int v27; // [rsp+40h] [rbp-29h] BYREF
  char v28[8]; // [rsp+48h] [rbp-21h] BYREF
  unsigned __int64 v29; // [rsp+50h] [rbp-19h] BYREF
  __int64 v30; // [rsp+58h] [rbp-11h] BYREF
  __int64 v31; // [rsp+60h] [rbp-9h]
  char v32; // [rsp+70h] [rbp+7h]
  __int64 v33; // [rsp+78h] [rbp+Fh]
  _BYTE v34[8]; // [rsp+80h] [rbp+17h] BYREF

  v33 = -2;
  v4 = a3;
  *(_QWORD *)v28 = a2;
  v6 = 0;
  v27 = 0;
  if ( this && !a3 )
    return 0;
  if ( !a2 )
  {
    *errno() = 22;
    invalid_parameter_noinfo();
    return -1;
  }
  _LocaleUpdate::_LocaleUpdate((_LocaleUpdate *)&v30, a4);
  v8 = *(_DWORD *)(v31 + 12);
  if ( v8 == 65001 )
  {
    v29 = 0;
    v6 = __crt_mbstring::__wcsrtombs_utf8(this, v28, v4, (unsigned __int64)&v29, v26);
LABEL_59:
    v16 = v6;
    goto LABEL_60;
  }
  if ( !this )
  {
    if ( !*(_QWORD *)(v31 + 312) )
    {
      v16 = 0;
      v23 = *(unsigned __int16 **)v28;
      v24 = **(_WORD **)v28;
      if ( **(_WORD **)v28 )
      {
        while ( v24 <= 0xFFu )
        {
          ++v16;
          v24 = *++v23;
          if ( !*v23 )
            goto LABEL_60;
        }
        *errno() = 42;
        v16 = -1;
      }
      goto LABEL_60;
    }
    v6 = -1;
    v25 = _acrt_WideCharToMultiByte(v8, 0, *(_DWORD *)v28, -1, 0, 0, 0, (__int64)&v27);
    if ( v25 && !v27 )
    {
      v16 = v25 - 1LL;
      goto LABEL_60;
    }
LABEL_57:
    v11 = errno();
    goto LABEL_58;
  }
  if ( !*(_QWORD *)(v31 + 312) )
  {
    if ( !v4 )
      goto LABEL_59;
    v9 = *(unsigned __int16 **)v28;
    while ( *v9 <= 0xFFu )
    {
      *((_BYTE *)this + v6) = *(_BYTE *)v9;
      v10 = *v9++;
      *(_QWORD *)v28 = v9;
      if ( v10 )
      {
        if ( ++v6 < (unsigned __int64)v4 )
          continue;
      }
      goto LABEL_59;
    }
    goto LABEL_16;
  }
  if ( *(_DWORD *)(v31 + 8) == 1 )
  {
    if ( v4 )
    {
      v12 = *(unsigned __int16 **)v28;
      v13 = v4;
      do
      {
        if ( !*v12 )
          break;
        ++v12;
        v13 = (const wchar_t **)((char *)v13 - 1);
      }
      while ( v13 );
      if ( v13 && !*v12 )
        LODWORD(v4) = (((__int64)v12 - *(_QWORD *)v28) >> 1) + 1;
    }
    v14 = _acrt_WideCharToMultiByte(v8, 0, *(_DWORD *)v28, (_DWORD)v4, (_DWORD)this, (_DWORD)v4, 0, (__int64)&v27);
    if ( v14 && !v27 )
    {
      v6 = v14 - 1LL;
      if ( *((_BYTE *)this + v14 - 1) )
        v6 = v14;
      goto LABEL_59;
    }
LABEL_16:
    v11 = errno();
    v6 = -1;
LABEL_58:
    *v11 = 42;
    goto LABEL_59;
  }
  v6 = -1;
  v15 = _acrt_WideCharToMultiByte(v8, 0, *(_DWORD *)v28, -1, (_DWORD)this, (_DWORD)v4, 0, (__int64)&v27);
  v16 = v15;
  if ( v27 )
    goto LABEL_57;
  if ( v15 )
  {
    v6 = v15 - 1LL;
    goto LABEL_59;
  }
  if ( GetLastError() != 122 )
    goto LABEL_57;
  if ( v4 )
  {
    v17 = *(_DWORD *)v28;
LABEL_36:
    v18 = *(_DWORD *)(v31 + 8);
    if ( v18 > 5 )
      v18 = 5;
    v19 = _acrt_WideCharToMultiByte(*(_DWORD *)(v31 + 12), 0, v17, 1, (unsigned int)v34, v18, 0, (__int64)&v27);
    if ( v19 )
    {
      if ( !v27 && v19 >= 0 )
      {
        v20 = v19;
        if ( (unsigned __int64)v19 <= 5 )
        {
          if ( v19 + v16 <= (unsigned __int64)v4 )
          {
            v21 = 0;
            while ( 1 )
            {
              v22 = v34[v21];
              *((_BYTE *)this + v16) = v22;
              if ( !v22 )
                break;
              ++v21;
              ++v16;
              if ( v21 >= v20 )
              {
                v17 = *(_DWORD *)v28 + 2;
                *(_QWORD *)v28 += 2LL;
                if ( v16 >= (unsigned __int64)v4 )
                  goto LABEL_60;
                goto LABEL_36;
              }
            }
          }
          goto LABEL_60;
        }
      }
    }
    goto LABEL_57;
  }
LABEL_60:
  if ( v32 )
    *(_DWORD *)(v30 + 936) &= ~2u;
  return v16;
}