orl_return ElfParseDrectve( char *contents, orl_sec_size len, orl_note_callbacks *cb, void *cookie )
/**************************************************************************************************/
{
char *cmd;
EatWhite( &contents, &len );
while( len > 0 ) {
if( *contents != '-' )
break; // - should be start of token
contents++; len--;
cmd = contents;
contents = pstrncspn( contents, ":", &len);
if( contents == NULL )
break;
contents++; len--;
if( memicmp( cmd, "export", 6 ) == 0 ) {
if( ParseExport( &contents, &len, cb, cookie ) != ORL_OKAY )
break;
} else if( memicmp( cmd, "defaultlib", 10 ) == 0 ) {
if( ParseDefLibEntry( &contents, &len, cb->deflib_fn, cookie )
!= ORL_OKAY ) break;
} else if( memicmp( cmd, "entry", 5 ) == 0 ) {
if( ParseDefLibEntry( &contents, &len, cb->entry_fn, cookie )
!= ORL_OKAY ) break;
}
EatWhite( &contents, &len );
}
return( ORL_OKAY );
}
// Used by config file parsing, gets string between a text block
void GetTextFromBlock(std::ifstream &file, std::string &text)
{
std::string tmp;
text.erase(0, 1); // Remove [
EatWhite(text);
while (file)
{
std::getline(file, tmp);
text += '\n' + EatWhite(tmp);
if (text[text.length()-1] == ']')
{
// Don't use "\]" as exit point(this way we can use a ] in a text block)
if ((text.length() > 1) && (text[text.length()-2] == '\\'))
text.erase(text.length()-2, 1);
else
break;
}
}
if (text[text.length()-1] == ']')
{
text.erase(text.length()-1, 1); // Remove ]
EatWhite(text);
}
}
extern bool InitParsing( void )
/*****************************/
// initialize the parsing stuff, and see if there is anything on the command
// line.
{
CmdFile = MemAlloc( sizeof( cmdfilelist ) );
CmdFile->next = NULL;
CmdFile->buffer = MemAlloc( MAX_LINE ); // maximum size of a command line.
CmdFile->how = COMMANDLINE;
CmdFile->oldhow = COMMANDLINE;
CmdFile->where = MIDST;
CmdFile->name = NULL;
CmdFile->file = NIL_HANDLE;
getcmd( CmdFile->buffer );
CmdFile->current = CmdFile->buffer;
EatWhite();
return( true );
}
extern void ParseDefFile( void )
/******************************/
// parse a .def file
{
char hmm;
while( CmdFile->where != ENDOFFILE ) {
switch( CmdFile->where ) {
case MIDST:
EatWhite();
hmm = *CmdFile->current;
switch( hmm ) {
case '\0':
if( CmdFile->how == BUFFERED ) {
CmdFile->where = ENDOFFILE;
break;
} // NOTE the fall through.
case '\n':
if( CmdFile->how == BUFFERED ) {
CmdFile->current++;
} else {
CmdFile->where = ENDOFLINE;
}
break;
case ';':
CmdFile->where = ENDOFLINE; // a comment.
break;
default: // must be a command
ProcessDefCommand();
break;
}
break;
case ENDOFLINE:
GetNewLine( DEF_SLOT );
break;
}
}
RestoreCmdLine();
}
local void ProcessRecord( // PROCESS A RECORD OF INPUT
int kw, // - key-word for record
char *record )// - record
{
SEGMENT *seg; // - current segment
switch( kw ) {
case KW_SEGMENT:
PushSegStack();
switch( ProcessMode ) {
case MODE_DELETE:
ProcessMode = MODE_SKIPPING;
break;
case MODE_OUTPUT:
SegmentCheck();
break;
}
break;
case KW_ELSESEGMENT:
switch( ProcessMode ) {
case MODE_DELETE:
EatWhite();
if( *Rptr == '\0' ) {
ProcessMode = MODE_OUTPUT;
} else {
SegmentCheck();
}
break;
case MODE_OUTPUT:
ProcessMode = MODE_SKIPPING;
break;
}
break;
case KW_ENDSEGMENT:
PopSegStack();
break;
case KW_KEEP:
switch( ProcessMode ) {
case MODE_OUTPUT:
seg = ScanSegment();
if( seg != NULL )
seg->seg_type = SEG_KEEP;
break;
}
break;
case KW_REMOVE:
switch( ProcessMode ) {
case MODE_OUTPUT:
seg = ScanSegment();
if( seg != NULL )
seg->seg_type = SEG_REMOVE;
break;
}
break;
case KW_INCLUDE:
switch( ProcessMode ) {
case MODE_OUTPUT:
if( ScanString() ) {
OpenFileNormal( Token, "r" );
} else {
Error( "Missing or invalid inclusion file" );
}
break;
}
break;
case KW_TEXT:
switch( ProcessMode ) {
case MODE_OUTPUT:
OutputString( OutFmt, record );
PutNL();
break;
}
break;
}
}
static void GetExport( void )
/***************************/
{
char *internal;
size_t intlen;
char *name;
size_t namelen;
unsigned long value;
unsigned long iopl;
bool isresident;
bool gottoken;
bool gotnodata;
size_t toklen;
char *command;
char *currloc;
if( !MakeToken( SEP_NO, true ) ) {
Warning( "invalid export name", OPTION_SLOT );
return;
}
DUPBUF_STACK( name, CmdFile->token, CmdFile->len ); // store it temporarily
toklen = namelen = CmdFile->len;
internal = NULL;
intlen = 0;
if( MakeToken( SEP_EQUALS, true ) ) { // got an internal name.
DUPBUF_STACK( internal, CmdFile->token, CmdFile->len ); // store it temporarily
intlen = CmdFile->len;
toklen += intlen + 1; // +1 for = sign.
}
value = 0xFFFFF; // arbitrary >64K.
if( MakeToken( SEP_AT, true ) ) { // got an ordinal.
if( !GetNumber( &value ) || value > (64 * 1024UL) ) {
Warning( "export ordinal value is invalid", OPTION_SLOT );
return;
} else {
toklen += 6; // maximum integer length + dot
}
}
isresident = false;
EatWhite();
gottoken = MakeToken( SEP_NO, true );
if( gottoken ) {
if( CmdFile->len == 12 && memicmp( CmdFile->token, "residentname", 12 ) == 0 ) {
isresident = true;
gottoken = MakeToken( SEP_NO, true );
toklen += 9; // length of resident + space.
}
}
gotnodata = false;
if( gottoken ) {
if( memicmp( CmdFile->token, "nodata", 6 ) == 0 ) {
gottoken = MakeToken( SEP_NO, true );
gotnodata = true;
}
}
iopl = 1024; // arbitrary > 63
if( gottoken ) {
if( !GetNumber( &iopl ) || iopl > 63 ) {
Warning( "iopl value is invalid", OPTION_SLOT );
} else {
toklen += 3; // maximum iopl length + space.
}
if( !gotnodata ) {
gottoken = MakeToken( SEP_NO, true );
}
}
if( gottoken && !gotnodata ) {
if( memicmp( CmdFile->token, "nodata", 6 ) == 0 ) {
gotnodata = true;
} else {
CmdFile->current = CmdFile->token; // reparse the token later
}
}
toklen += 8; // export keyword + space + nullchar;
command = MemAlloc( toklen );
memcpy( command, "export ", 7 );
currloc = command + 7;
memcpy( currloc, name, namelen );
currloc += namelen;
if( value <= (64*1024UL) ) { // if an ordinal was specified....
*currloc++ = '.';
ultoa( value, currloc, 10 );
while( *currloc != '\0' ) { // find end of string.
currloc++;
}
}
if( internal != NULL ) {
*currloc++ = '=';
memcpy( currloc, internal, intlen );
currloc += intlen;
}
if( isresident ) {
*currloc++ = ' ';
memcpy( currloc, "resident", 8 );
currloc += 8;
}
if( iopl <= 63 ) {
*currloc++ = ' ';
ultoa( iopl * 2, currloc, 10 ); // convert iopl value to a byte value
} else {
*currloc = '\0';
}
AddCommand( command, OPTION_SLOT, false );
}
extern bool MakeToken( sep_type separator, bool include_fn )
/**********************************************************/
// include_fn == true if '.' and ':' are allowed to be part of the token
// (include filename).
{
int quit;
char hmm;
char matchchar;
int len;
bool forcematch;
bool hitmatch;
EatWhite();
hmm = *CmdFile->current;
CmdFile->token = CmdFile->current;
if( hmm == '\0' || hmm == '\n' ) {
CmdFile->len = 0;
return( false );
}
matchchar = '\0';
CmdFile->len = 1; // for error reporting.
switch( separator ){
case SEP_QUOTE:
if( hmm != '\'' && hmm != '"' ) {
return( false );
}
matchchar = hmm;
break;
case SEP_AT:
if( hmm != '@' ) {
return( false );
}
break;
case SEP_COLON:
if( hmm != ':' ) {
return( false );
}
break;
case SEP_EQUALS:
if( hmm != '=' ) {
return( false );
}
break;
case SEP_PERIOD:
if( hmm != '.' ) {
return( false );
}
break;
default:
CmdFile->current--; // no separator wanted.
}
CmdFile->current++; // skip separator.
CmdFile->token = CmdFile->current;
hmm = *CmdFile->current;
if( hmm == '\0' || hmm == '\n' || hmm == ';' ) {
CmdFile->len = 0;
return( false );
}
len = 0;
quit = false;
forcematch = (separator == SEP_QUOTE );
hitmatch = false;
while( !quit ) {
len++;
CmdFile->current++;
hmm = *CmdFile->current;
switch( hmm ) {
case '\'':
case '"':
if( separator == SEP_QUOTE && hmm == matchchar ) {
CmdFile->current++; // don't include end quote in next token.
hitmatch = true;
quit = true;
}
break;
case ')': // Right paren separates only in overlay, left never
if( OverlayLevel == 0 ) break; // NOTE: possible fall through
case '+': // break a token on any of these.
case ',':
case ';':
case '=':
case '@':
if( separator == SEP_SPACE ) break; // NOTE: possible fall through
case '/':
case ' ':
case '\t':
if( !forcematch ) {
quit = true;
}
break;
case '.':
case ':':
if( !forcematch && !include_fn ) {
quit = true;
}
break;
case '\0':
case '\r':
case '\n':
quit = true;
break;
}
}
CmdFile->len = len;
if( forcematch && !hitmatch ) {
return( false );
}
return( true );
}
