/
parse.d
1230 lines (1036 loc) · 22.1 KB
/
parse.d
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module parse;
import io_struc;
// MVFILNAM - Copyright (c) SLR Systems 1994
void* MOVE_FILE_LIST_GINDEX_PATH_PRIM_EXT(EAX, ECX)
{
// ECX IS GINDEX, EAX IS DESTINATION
EDI = EAX;
FILE_LIST_STRUCT* EDX;
CONVERT EDX,ECX,FILE_LIST_GARRAY
EAX = [EDX].FILE_LIST_PATH_GINDEX;
if (EAX)
{
CONVERT EAX,EAX,FILE_LIST_GARRAY
ASSUME EAX:PTR FILE_LIST_STRUCT
ECX = EAX.FILE_LIST_NFN.NFN_PATHLEN;
ESI = &EAX.FILE_LIST_NFN.NFN_TEXT;
memcpy(EDI, ESI, ECX);
EDI += ECX;
}
// OUTPUT FILENAME IN ASCII PLEASE
// FROM [SI] TO [DI]
ECX = [EDX].FILE_LIST_NFN.NFN_TOTAL_LENGTH;
ESI = &[EDX].FILE_LIST_NFN.NFN_TEXT;
memcpy(EDI, ESI, ECX);
return EDI + ECX;
}
ubyte* MOVE_PATH_PRIM_EXT(ubyte* EAX, NFN_STRUCT* ECX)
{
// OUTPUT FILENAME IN ASCII PLEASE
// FROM [ECX] TO [EAX]
memcpy(EAX, &ECX.NFN_TEXT, ECX.NFN_TOTAL_LENGTH);
return EAX + ECX.NFN_TOTAL_LENGTH;
}
// MVFNASC - Copyright (c) SLR Systems 1994
void MOVE_FN_TO_ASCIZ(NFN_STRUCT* EAX)
{
// MOVE FILNAM [EAX] TO ASCIZ STRING
auto ECX = EAX.NFN_TOTAL_LENGTH;
ASCIZ_LEN = ECX; // length in bytes, not 0
memcpy(&ASCIZ, EAX.NFN_TEXT, ECX);
*cast(int*)(&ASCIZ + ECX) = 0;
}
// MVFN - Copyright (c) SLR Systems 1994
MOVE_NFN(NFN_STRUCT* EAX, NFN_STRUCT* ECX)
{
// EAX IS TARGET NFN_STRUCT, ECX IS SOURCE
memcpy(EAX, ECX,
NFN_STRUCT.sizeof - NFN_TEXT_SIZE + ECX.NFN_TOTAL_LENGTH + 4);
}
// MVLISTNF - Copyright (c) SLR Systems 1994
MOVE_FILE_LIST_GINDEX_NFN(NFN_STRUCT* EAX, ECX)
{
// MOVE COMPLETE NFN FROM FILE LIST TO NFN STRUCTURE
// ECX IS FILE_LIST_GINDEX
EDX = EAX;
CONVERT EAX,ECX,FILE_LIST_GARRAY
ECX = [EAX].FILE_LIST_STRUCT.FILE_LIST_NFN.NFN_TOTAL_LENGTH +
NFN_STRUCT.NFN_TEXT+4;
EAX = [EAX].FILE_LIST_STRUCT.FILE_LIST_PATH_GINDEX;
memcpy(EDX, &FILE_LIST_STRUCT.FILE_LIST_NFN[EAX], ECX);
if (EAX)
{
CONVERT EAX,EAX,FILE_LIST_GARRAY
ECX = &FILE_LIST_STRUCT.FILE_LIST_NFN[EAX];
EAX = EDX;
MOVE_ECXPATH_EAX();
}
}
// MVPATH
MOVE_ECXPATH_EAX(NFN_STRUCT* EAX, NFN_STRUCT* ECX)
{
// MOVE PATH FROM ECX TO EAX, PRESERVE EAX
auto dst = EAX;
auto src = ECX;
// Make room
memmove(&dst.NFN_TEXT[src.NFN_PATHLEN],
&dst.NFN_TEXT[dst.NFN_PATHLEN],
dst.NFN_TOTAL_LENGTH - dst.NFN_PATHLEN);
// Copy path
memcpy(dst.NFN_TEXT, src.NFN_TEXT, src.NFN_PATHLEN);
dst.NFN_TOTAL_LENGTH += src.NFN_PATHLEN - dst.NFN_PATHLEN;
dst.NFN_PATHLEN = src.NFN_PATHLEN;
*cast(int*)&dst.NFN_TEXT[dst.NFN_TOTAL_LENGTH] = 0;
return dst;
}
// MVSRCFIL - Copyright (c) SLR Systems 1994
MOVE_SRCPRIM_TO_EAX_CLEAN(NFN_STRUCT* EAX)
{
EAX.NFN_PRIMLEN = 0;
EAX.NFN_PATHLEN = 0;
EAX.NFN_EXTLEN = 0;
EAX.NFN_TOTAL_LENGTH = 0;
MOVE_SRCPRIM_TO_EAX(EAX);
}
MOVE_SRCPRIM_TO_EAX(NFN_STRUCT* EAX)
{
// MOVE PRIMARY PART OF SRCNAM TO FILNAM
MOVE_ECXPRIM_TO_EAX(EAX, &SRCNAM);
}
MOVE_ECXPRIM_TO_EAX(NFN_STRUCT* EAX, NFN_STRUCT* ECX)
{
auto dst = EAX;
auto src = ECX;
// Make room
memmove(&dst.NFN_TEXT[dst.NFN_PATHLEN + src.NFN_PRIMLEN],
&dst.NFN_TEXT[dst.NFN_PATHLEN + dst.NFN_PRIMLEN],
dst.NFN_EXT);
// Copy path
memcpy(&dst.NFN_TEXT[dst.NFN_PATHLEN],
&src.NFN_TEXT[src.NFN_PATHLEN],
src.NFN_PRIMLEN);
dst.NFN_TOTAL_LENGTH += src.NFN_PRIMLEN - dst.NFN_PRIMLEN;
dst.NFN_PRIMLEN = src.NFN_PRIMLEN;
*cast(int*)&dst.NFN_TEXT[dst.NFN_TOTAL_LENGTH] = 0;
return dst;
}
// GTNXTU - Copyright (c) SLR Systems 1994
// Get next character from EBX in upper case
ubyte GTNXTU(inout ubyte* EBX)
{
auto AL = *EBX++;
if (AL >= 'a' && AL <= 'z')
AL -= 0x20;
return AL;
}
// DO_FN - Copyright (c) SLR Systems 1994
DO_FILENAME(NFN_STRUCT* ECX, CMDLINE_STRUCT* EAX)
{
// EAX IS FILESTUFF_PTR
PARSE_FILENAME(ECX);
// DEAL WITH DEFAULTS
return DO_DEFAULTS(ECX, EAX);
}
DO_DEFAULTS(NFN_STRUCT* ECX, CMDLINE_STRUCT* EAX)
{
// EAX IS FILESTUFF_PTR
// ECX IS NFN_STRUCT
NFN_STRUCT* ESI = ECX;
CMDLINE_STRUCT* EDI = EAX;
AL = ESI.NFN_FLAGS;
if (EAX & MASK NFN_PRIM_SPECIFIED)
JZ L1$
L19$:
if (EAX & MASK NFN_EXT_SPECIFIED)
JNZ L3$
// MOVE DEFAULT EXTENT (UNLESS PRIMARY IS NUL)
EAX = ESI;
if (!CHECK_NUL1(EAX))
{
// MOVE DEFAULT EXTENT...
EAX = 0;
AL = EDI.CMD_EXTENT[0];
ECX = EAX;
EAX -= ESI.NFN_EXTLEN;
ESI.NFN_EXTLEN = ECX;
ESI.NFN_TOTAL_LENGTH += EAX;
EAX = ESI.NFN_PATHLEN + ESI.NFN_PRIMLEN;
memcpy(ESI.NFN_TEXT + EAX, EDI.CMD_EXT + 1, ECX);
*cast(int*)(ESI.NFN_TEXT + EAX + ECX) = 0;
}
L3$:
EAX = ESI;
return EAX;
L1$:
// NO PRIMARY FILENAME, MOVE EITHER NUL OR SRC...
PUSH EAX
[EDI].CMD_SELECTED();
// WANT IT, MOVE SOURCE NAME
JNZ L13$
// OK, IF PATH OR EXTENTION SPECIFIED, MOVE SOURCE TOO
if (BPTR [ESI].NFN_FLAGS & MASK NFN_PATH_SPECIFIED+MASK NFN_EXT_SPECIFIED)
JZ L15$
L13$:
EAX = ESI;
MOVE_SRCPRIM_TO_EAX();
L15$:
POP EAX
goto L19$;
}
// CHKNUL - Copyright (c) SLR Systems 1994
CHECK_NUL(NFN_STRUCT* EAX)
{
// SEE IF [EAX] IS NUL DEVICE..., SET FLAG IF SO...
if (EAX.NFN_PRIMLEN == 0 || !CHECK_NUL1(EAX))
EAX.NFN_FLAGS |= MASK NFN_NUL;
}
// Return true if [EAX] primary name is 'NUL'
bool CHECK_NUL1(NFN_STRUCT* EAX)
{
// SEE IF [EAX] PRIMARY NAME IS 'NUL'
// RETURNS EAX INTACT
EDX = [EAX].NFN_PRIMLEN;
ECX = [EAX].NFN_PATHLEN;
if (EDX != 3)
return false;
ECX = &EAX.NFN_TEXT[ECX+1];
AL = ECX[-1];
AL = toupper(AL);
if (AL != 'N')
return false;
AL = *ECX++;
AL = toupper(AL);
if (AL != 'U')
return false;
AL = *ECX++;
AL = toupper(AL);
if (AL != 'L')
return false;
return true;
}
// LIBRTN - Copyright (c) SLR Systems 1994
struct LRF_VARS
{
ubyte[NFN_STRUCT.sizeof] LRF_NFN_STRUCT_EBP;
}
FIX MACRO XX
XX EQU ([EBP-SIZEOF LRF_VARS].(XX&_EBP))
ENDM
FIX LRF_NFN_STRUCT
ubyte* LIB_ROUTINE_FINAL(EAX)
{
// EAX IS INPTR1 TO USE
LRF_VARS LRF_NFN_STRUCT;
EDX = EAX;
while (1)
{
do
{
AL = *EDX++;
} while (AL == ';' || AL == ',' || AL == ' ');
if (AL == CR)
break;
--EDX;
if (AL == 0x1A)
break;
ECX = &LRF_NFN_STRUCT;
EAX = &LIBSTUFF;
// EAX IS FILESTUFF
// EDX IS INPTR
// ECX IS NFN_STRUCT, RETURNS EAX IS INPTR
GET_FILENAME();
PUSH EAX
EAX = &LRF_NFN_STRUCT;
HANDLE_LIBS();
POP EDX
}
return EDX;
}
LIB_ROUTINE_FINAL_COMENT()
{
// EAX IS INPTR1 TO USE
LRF_VARS LRF_NFN_STRUCT;
EDX = EAX;
goto L2$;
L1$:
ECX = &LRF_NFN_STRUCT;
EAX = &LIBSTUFF;
// EAX IS FILESTUFF, EDX IS INPTR, ECX IS NFN_STRUCT, RETURNS EAX IS INPTR
GET_FILENAME();
PUSH EAX
EAX = &LRF_NFN_STRUCT;
ASSUME EAX:PTR NFN_STRUCT
ECX = EAX.NFN_PATHLEN + EAX.NFN_PRIMLEN;
EDX = EAX.NFN_EXTLEN;
if (EDX == 4)
{
DL = [EAX+ECX+1].NFN_TEXT;
ECX = &[EAX+ECX+2].NFN_TEXT;
if (toupper(DL) == 'L' &&
toupper(*ECX++) == 'O' &&
toupper(*ECX++) == 'D')
{
// HANDLE LIKE A STUB FILE
if (LOD_SUPPLIED)
{
WARN_RET(DUP_LOD_ERR);
}
else
{
AL = DOSX_EXE_TYPE;
XCHG AL,EXETYPE_FLAG
if (AL && AL != DOSX_EXE_TYPE)
ERR_RET(DOSX_NONDOSX_ERR);
if (EXEPACK_SELECTED)
ERR_ABORT(DOSX_EXEPACK_ERR);
EAX = &LRF_NFN_STRUCT;
LOD_SUPPLIED = -1;
HANDLE_LOD();
}
POP EDX
goto L9$;
}
}
// IGNORE LIBSEARCH REQUESTS?
if (DEFAULTLIBRARYSEARCH_FLAG)
{
EAX = &LRF_NFN_STRUCT;
HANDLE_LIBS();
}
POP EDX
goto L2$;
L2$:
do
{
AL = *EDX++;
} while (AL == ';' || AL == ',' || AL == ' ');
if (AL != CR)
{
--EDX;
if (AL != 0x1A)
goto L1$;
}
L9$:
return EDX;
}
ALIGN 4
LIBSTUFF LABEL DWORD
DCA RET_FALSE; // DEFAULT TO NUL
DD LIB_EXT; // DEFAULT LIB EXTENSION
version(fg_mscmd)
{
DCA RET_TRUE; // YES, THIS IS WANTED
DD LIB_MSG; // IF PROMPTING...
LIB_MSG DB 21,'Libraries and Paths: '
}
LIB_EXT DB 4,'.lib'
RET_FALSE()
{
if (AL $$ AL)
return;
}
RET_TRUE()
{
AL |= 1;
return;
}
// GET_FN - Copyright (c) SLR Systems 1994
GET_FILENAME(EAX, NFN_STRUCT* ECX, EDX)
{
// EAX IS FILESTUFF_PTR
// ECX IS NFN_STRUCT TO USE
// EDX IS INPTR1 OR SOMETHING
// RETURNS:
// EAX IS UPDATED INPTR1
PUSHM EDI,ESI
ESI = EDX;
PUSH EBX
EBX = EAX;
L0$:
AL = *ESI++;
if (AL == ' ')
goto L0$;
if (AL == 9)
goto L0$;
--ESI;
EDI = &[ECX].NFN_TEXT;
EAX = 0;
L1$:
AL = *ESI++;
if (AL == '"')
goto L6$;
*EDI++ = AL;
AL = FNTBL[EAX];
if (AL & MASK FNTBL_ILLEGAL)
JZ L1$
L15$:
// MOV DPTR [EDI-2],0
EDI -= ECX;
--ESI;
EDI -= NFN_STRUCT.NFN_TEXT+1;
[ECX].NFN_TOTAL_LENGTH = EDI;
JZ L9$
EAX = EBX;
// EAX IS FILESTUFF_PTR, ECX IS NFN_STRUCT
DO_FILENAME();
L5$:
POP EBX
EAX = ESI;
POPM ESI,EDI
return;
L6$:
AL = *ESI++;
if (AL == '"')
goto L1$;
*EDI++ = AL;
if (AL == ' ')
goto L6$;
AL = FNTBL[EAX];
if (AL & MASK FNTBL_ILLEGAL)
JZ L6$
goto L15$;
L9$:
ERR_INBUF_ABORT(FILE_EXP_ERR);
goto L5$;
}
// HNDLLIBS - Copyright (c) SLR Systems 1994
HANDLE_LIBS(NFN_STRUCT* EAX)
{
if (EAX.NFN_FLAGS & MASK NFN_PRIM_SPECIFIED+MASK NFN_EXT_SPECIFIED)
{
DO_SEARCH_LIBRARY(EAX);
return;
}
// Remove base file name and extension from NFN_TEXT
EAX.NFN_TOTAL_LENGTH -= EAX.NFN_PRIMLEN + EAX.NFN_EXTLEN;
EAX.NFN_PRIMLEN = 0;
EAX.NFN_EXTLEN = 0;
*cast(int*)&EAX.NFN_TEXT[EAX.NFN_TOTAL_LENGTH] = 0;
STORE_LIBPATH(EAX);
}
DO_SRCNAM(NFN_STRUCT* EAX)
{
MOVE_NFN(&SRCNAM, EAX);
}
DO_LIBRARY(NFN_STRUCT* EAX)
{
DO_SEARCH_LIBRARY(EAX);
}
DO_SEARCH_LIBRARY(NFN_STRUCT* EAX)
{
EAX.NFN_TYPE = NFN_LIB_TTYPE;
DO_OBJS_1(EAX, &LIB_LIST);
}
DO_OBJS(NFN_STRUCT* EAX)
{
// IF NOT NUL, ADD NEW TO LIST...
DO_OBJS_1(EAX, &OBJ_LIST);
}
DO_OBJS_1(NFN_STRUCT* EAX, ECX)
{
// ECX IS FILE_LIST TO PUT IT IN
DH = [EAX].NFN_FLAGS;
DL = 0;
DH &= MASK NFN_AMBIGUOUS;
if (!DH)
{
// CURRENTLY UNAMBIGUOUS
RESS THIS_AMBIGUOUS,DL
NOT_AMBIGUOUS();
return;
}
// OK, NAME IN SI IS AMBIGUOUS...
PUSHM EDI,ESI
--EDX; // LISTTYPE
EDI = ECX; // NOPE, GOT WHOLE FILENAME
ESI = EAX;
// OOPS...
THIS_AMBIGUOUS,DL = -1;
// EAX IS NFN_STRUCT
DO_FINDFIRST();
// ALL DONE, NOT FOUND...
JC L11$
L1$:
EAX = ESI;
ECX = EDI;
NOT_AMBIGUOUS();
EAX = ESI;
DO_FINDNEXT();
JNC L1$
CLOSE_FINDNEXT();
L11$:
POPM ESI,EDI
return;
}
COPY_FIRST_OBJ(EDI)
{
if (EDI == &OBJ_LIST)
{ DO_SRCNAM();
EAX = ESI;
}
COPY_FIRST_OBJ_RET();
}
NOT_AMBIGUOUS(NFN_STRUCT* EAX, ECX)
{
// ECX IS FILE_LIST
EDX = SRCNAM.NFN_PRIMLEN;
EDI = ECX;
ESI = EAX;
if (!EDX && EDI == &OBJ_LIST)
{ DO_SRCNAM();
EAX = ESI;
}
COPY_FIRST_OBJ_RET();
}
COPY_FIRST_OBJ_RET()
{
// RETURNS ECX AS SYMBOL ADDRESS
FILENAME_INSTALL();
// EAX IS GINDEX
ASSUME ECX:PTR FILE_LIST_STRUCT
EDX = EAX;
// ADD TO LIST IF NOT ALREADY THERE...
// DS:BX IS SYMBOL, DX IS LOGICAL ADDR
PUSH EBX
AL = ECX.FILE_LIST_FLAGS;
if (DOING_NODEF)
{
ECX.FILE_LIST_FLAGS |= MASK MOD_IGNORE;
return;
}
// MODEFAULT, IGNORE
if (EAX & MASK MOD_IGNORE)
return;
if (EAX & MASK MOD_ADD)
// ALREADY IN ADD LIST...
{
ASSUME EDI:PTR FILE_LISTS
// ALREADY THERE, WAS IT UNAMBIGUOUS?
if (EAX & MASK MOD_UNAMBIG)
return; // YES, IGNORE.
// WAS AMBIGUOUS, WHAT ABOUT NOW?
if (THIS_AMBIGUOUS)
return; // STILL AMBIGUOUS
// NOW UNAMBIGUOUS, MOVE IT TO END OF LINKED LIST...
ECX.FILE_LIST_FLAGS = AL |MASK MOD_UNAMBIG;
// FIRST, IF .FILE_LAST_ITEM MATCHES, SKIP SEARCH, JUST FLAG IT..
if ([EDI].FILE_LAST_GINDEX == EDX)
return;
// SEARCH LIST FOR IT (DX:BX)
PUSH EDI
EAX = [EDI].FILE_FIRST_GINDEX;
do
{
CONVERT EDI,EAX,FILE_LIST_GARRAY
ASSUME EDI:PTR FILE_LIST_STRUCT
EAX = [EDI].FILE_LIST_NEXT_GINDEX;
} while (EAX != EDX);
// MAKE [DI:CX] POINT TO [DS:SI]
EAX = 0;
EBX = [ECX].FILE_LIST_NEXT_GINDEX;
[ECX].FILE_LIST_NEXT_GINDEX = 0;
[EDI].FILE_LIST_NEXT_GINDEX = EBX;
POP EDI
// NOW, MAKE .LAST PT TO THIS...
}
else
{
AL |= MASK MOD_ADD;
if (THIS_AMBIGUOUS == 0)
{
version(any_overlays)
{
if (EAX & MASK MOD_UNAMBIG && ECX.FILE_LIST_SECTION_GINDEX)
{
ERR_INBUF_ABORT(DUP_SECTION_ERR);
}
}
AL |= MASK MOD_UNAMBIG;
}
[ECX].FILE_LIST_FLAGS = AL;
}
// PUT_IN_ADD_LIST
// ESI IS NFN_STRUCT
// EDI IS LISTTYPE
// EDX IS CURN FILE_LIST_GINDEX
// ECX IS CURN FILE_LIST_ADDRESS
ASSUME EDI:PTR FILE_LISTS
version(any_overlays)
{
ECX.FILE_LIST_SECTION = CURN_SECTION;
ECX.FILE_LIST_PLTYPE = CURN_PLTYPE;
}
EAX = EDI.FILE_LAST_GINDEX;
ECX.FILE_LIST_PLINK_FLAGS |= DEBUG_TYPES_SELECTED;
EDI.FILE_LAST_GINDEX = EDX;
CONVERT EAX,EAX,FILE_LIST_GARRAY
ASSUME EAX:PTR FILE_LIST_STRUCT
// CAUSE THIS IS NOT THREAD
EAX.FILE_LIST_NEXT_GINDEX = EDX; // ORDER, THIS IS LOGICAL ORDER
version(fgh_inthreads)
{
if (HOST_THREADED & OBJS_DONE)
{
EAX = EDX;
OBJ_LIST.FILE_LAST_GINDEX = EAX;
LINK_TO_THREAD();
}
}
}
STORE_LIBPATH(NFN_STRUCT* EAX)
{
DL = 2;
ECX = OFF LIBPATH_LIST;
LNI_PATHS(EAX, EDX, ECX);
}
LNI_PATHS(NFN_STRUCT* EAX, EDX, ECX)
{
// DONT ADD NUL PATH
DH = 0;
if (EAX.NFN_PATHLEN == 0)
{
LNI_FILES(EAX, EDX, ECX);
}
}
LNI_FILES(EAX, EDX, ECX)
{
EAX.NFN_TYPE = DH;
*FILE_HASH_MOD = DL;
DO_OBJS_1();
EAX = 0;
FILE_HASH_MOD = 0;
}
HANDLE_OBJPATHS(NFN_STRUCT* EAX)
{
DL = 3;
LNI_PATHS(EAX, EDX, &OBJPATH_LIST);
}
version(fg_segm OR fg_pe)
{
HANDLE_STUBPATHS(NFN_STRUCT* EAX)
{
// PARSING PATH= VARIABLE
DL = 4;
LNI_PATHS(EAX, EDX, &STUBPATH_LIST);
}
HANDLE_STUB(NFN_STRUCT* EAX)
{
EDX = 5+256*NFN_STUB_TTYPE;
LNI_FILES(EAX, EDX, &STUB_LIST);
}
HANDLE_OLD(NFN_STRUCT* EAX)
{
EDX = 6+256*NFN_OLD_TTYPE;
LNI_FILES(EAX, EDX, &OLD_LIST);
}
HANDLE_RCS(NFN_STRUCT* EAX)
{
ECX = *cast(int*)&EAX.NFN_TEXT[EAX.NFN_PATHLEN + EAX.NFN_PRIMLEN];
if (ECX != 'SER.' && ECX != 'ser.')
WARN_ASCIZ_RET(IMPROBABLE_RES_ERR, EAX.NFN_TEXT);
EDX = 7+NFN_RES_TTYPE*256;
LNI_FILES(EAX, EDX, &RC_LIST);
}
HANDLE_LOD(NFN_STRUCT* EAX)
{
EDX = 8+NFN_LOD_TTYPE*256;
LNI_FILES(EAX, EDX, &LOD_LIST);
}
}
// PARSE_FN - Copyright (c) SLR Systems 1994
NFN_STRUCT* PARSE_FILENAME(NFN_STRUCT* EAX)
{
// EAX IS NFN_STRUCT
// (LENGTH IS ALREADY SET, AND TEXT IS THERE)
// RETURNS:
// EAX IS NFN_STRUCT
NFN_STRUCT* ESI = EAX;
EAX = 0;
NFN_STRUCT* EDI = ESI;
ESI.NFN_PATHLEN = 0;
ESI.NFN_PRIMLEN = 0;
ESI.NFN_EXTLEN = 0;
ESI.NFN_FLAGS = 0;
ESI.NFN_TYPE = 0;
ESI.reserved1 = 0;
ECX = [ESI].NFN_TOTAL_LENGTH;
ESI = &ESI.NFN_TEXT;
EDX = ESI; // SAVE START OF FILENAME IN DX
DPTR [ESI+ECX] = EAX; // ZERO AT END
ESI += ECX-1; // ESI IS AT THE LAST CHAR OF TOKEN
// SCAN FORWARDS LOOKING FOR AMBIGUOUS CHARACTERS
if (!ECX)
goto L9$
// OK, NOW SCAN BACKWARDS FOR EXTENT OR PATH STUFF
// SKIP TRAILING SPACES
L30$:
AL = *ESI--;
if (AL != ' ')
goto L31$;
--ECX;
[EDI].NFN_TOTAL_LENGTH = ECX;
if (ECX)
goto L30$
goto L9$;
L3$:
--ESI;
L31$:
AL = FNTBL[EAX];
--ECX;
if (AL & MASK FNTBL_AMBIGUOUS)
{
[EDI].NFN_FLAGS |= MASK NFN_AMBIGUOUS;
AL = [ESI];
if (ECX)
goto L3$
goto DO_PRIMARY2;
}
if (!(AL & (MASK FNTBL_PATH_SEPARATOR | MASK FNTBL_DOT)))
{
AL = *ESI;
if (ECX)
goto L3$
goto DO_PRIMARY2;
}
if (AL & MASK FNTBL_DOT)
{
// GOT A '.', SO STORE EXTENSION LENGTH
EAX = [EDI].NFN_TOTAL_LENGTH;
[EDI].NFN_FLAGS |= MASK NFN_EXT_SPECIFIED;
EAX -= ECX;
if (EAX == 1 && !FORCE_PATH)
{
// JUST A DOT, REMOVE IT...
--EDI.NFN_TOTAL_LENGTH;
}
else
{
EDI.NFN_EXTLEN = EAX;
}
// NOW LOOK ONLY FOR END-OF-PRIMARY...
EAX = 0;
if (!ECX)
goto L9$;
while (1)
{
AL = *ESI--;
AL = FNTBL[EAX];
--ECX;
if (ECX == 0)
{
if (AL & (MASK FNTBL_PATH_SEPARATOR | MASK FNTBL_AMBIGUOUS))
{
if (!(AL & MASK FNTBL_PATH_SEPARATOR))
EDI.NFN_FLAGS |= MASK NFN_AMBIGUOUS;
break;
}
goto DO_PRIMARY2;
}
if (AL & MASK FNTBL_PATH_SEPARATOR)
break;
if (AL & MASK FNTBL_AMBIGUOUS)
[EDI].NFN_FLAGS |= MASK NFN_AMBIGUOUS;
}
}
++ECX;
DO_PRIMARY:
++ESI;
DO_PRIMARY2:
EAX = EDI.NFN_TOTAL_LENGTH - EDI.NFN_EXTLEN - ECX;
EDI.NFN_PRIMLEN = EAX;
if (EAX)
[EDI].NFN_FLAGS |= MASK NFN_PRIM_SPECIFIED;
// NOW, CX IS # OF BYTES IN A PATH-SPEC
if (ECX)
{
EDI.NFN_PATHLEN = ECX;
EDI.NFN_FLAGS |= MASK NFN_PATH_SPECIFIED;
}
L9$:
// ALL DONE, CONGRATS!
if (FORCE_PATH)
{
// IF PRIMLEN OR EXTLEN !=0, MAKE THEM ZERO AND ADD A \ AT END
EBX = EDI.NFN_PRIMLEN;
EDI.NFN_FLAGS &= ~(NFN_RECORD.NFN_PRIM_SPECIFIED | NFN_RECORD.NFN_EXT_SPECIFIED);
EBX += EDI.NFN_EXTLEN;
if (EBX)
{
++EBX;
EAX = 0;
EBX += EDI.NFN_PATHLEN;
EDI.NFN_PRIMLEN = 0;
EDI.NFN_PATHLEN = EBX;
EDI.NFN_EXTLEN = 0;
EDI.NFN_TEXT[EBX-1] = '\';
++EDI.NFN_TOTAL_LENGTH;
EDI.NFN_FLAGS |= NFN_RECORD.NFN_PATH_SPECIFIED;
}
}
EAX = EDI;
return EAX;
}
// MUST BE IN DATA SEGMENT, AS WE MODIFY IT...
ubyte[256] FNTBL =
{
// ILLEGAL HPFS FILENAME CHARS ARE:
// 0-1FH, " * + , / : ; < = > ? [ \ ] |
// WE ALLOW PATH SEPARATORS \ / :
// WE ALLOW AMBIGUOUS CHARS ? *
// 00 NUL
FNTBL_RECORD.FNTBL_ILLEGAL | FNTBL_RECORD.SYMTBL_ILLEGAL,
// 01 SOH
FNTBL_RECORD.FNTBL_ILLEGAL | FNTBL_RECORD.SYMTBL_ILLEGAL,
// 02
FNTBL_RECORD.FNTBL_ILLEGAL | FNTBL_RECORD.SYMTBL_ILLEGAL,
// 03
FNTBL_RECORD.FNTBL_ILLEGAL | FNTBL_RECORD.SYMTBL_ILLEGAL,
// 04
FNTBL_RECORD.FNTBL_ILLEGAL | FNTBL_RECORD.SYMTBL_ILLEGAL,
// 05
FNTBL_RECORD.FNTBL_ILLEGAL | FNTBL_RECORD.SYMTBL_ILLEGAL,
// 06
FNTBL_RECORD.FNTBL_ILLEGAL | FNTBL_RECORD.SYMTBL_ILLEGAL,
// 07 BEL
FNTBL_RECORD.FNTBL_ILLEGAL | FNTBL_RECORD.SYMTBL_ILLEGAL,
// 08 BS
FNTBL_RECORD.FNTBL_ILLEGAL | FNTBL_RECORD.SYMTBL_ILLEGAL,
// 09 TAB
FNTBL_RECORD.FNTBL_ILLEGAL | FNTBL_RECORD.SYMTBL_ILLEGAL,
// 0A LF
FNTBL_RECORD.FNTBL_ILLEGAL | FNTBL_RECORD.SYMTBL_ILLEGAL,
// 0B
FNTBL_RECORD.FNTBL_ILLEGAL | FNTBL_RECORD.SYMTBL_ILLEGAL,
// 0C
FNTBL_RECORD.FNTBL_ILLEGAL | FNTBL_RECORD.SYMTBL_ILLEGAL,
// 0D CR
FNTBL_RECORD.FNTBL_ILLEGAL | FNTBL_RECORD.SYMTBL_ILLEGAL,
// 0E
FNTBL_RECORD.FNTBL_ILLEGAL | FNTBL_RECORD.SYMTBL_ILLEGAL,
// 0F
FNTBL_RECORD.FNTBL_ILLEGAL | FNTBL_RECORD.SYMTBL_ILLEGAL,
// 10
FNTBL_RECORD.FNTBL_ILLEGAL | FNTBL_RECORD.SYMTBL_ILLEGAL,
// 11