STATIC TOKEN_T lexDotName( void )
/********************************
* Given that the last character was a DOT, input the maximum string
* possible, and check if it is a TOK_DOTNAME, TOK_SUF, or TOK_SUFSUF
* Special cases to look for: "."{dirc}; ".."{dirc}; ".."{extc}+;
* and "."{extc}+"."
* recognizes:
* "."{extc}* TOK_SUF
* "."{extc}*"."{extc}* TOK_SUFSUF
* "{"path"}""."{extc}*"{"path"}""."{extc} TOK_SUFSUF
* "."{dot-name} TOK_DOTNAME
* "."{dirc} passes to lexFileName()
* ".."{dirc} passes to lexFileName()
*/
{
char ext[MAX_SUFFIX];
unsigned pos;
STRM_T s;
STRM_T s2;
TOKEN_T ret;
pos = 0;
if( *targ_path != NULLCHAR ) {
FreeSafe( targ_path );
targ_path = "";
}
if( *dep_path != NULLCHAR ) {
FreeSafe( dep_path );
dep_path = "";
}
dep_path = getCurlPath();
s = PreGetCH();
if( s != DOT ) {
PrtMsg( ERR | LOC | INVALID_SUFSUF );
return( TOK_NULL );
} else {
ext[pos++] = DOT;
s = PreGetCH();
}
if( isdirc( s ) || s == PATH_SPLIT || s == ';' ) { // check for "."{dirc}
UnGetCH( s );
if( *dep_path != NULLCHAR ) {
PrtMsg( ERR | LOC | INVALID_SUFSUF );
}
return( lexFileName( DOT ) );
}
if( s == DOT ) { /* check if ".."{extc} or ".."{dirc} */
s2 = PreGetCH(); /* probe one character */
UnGetCH( s2 );
if( isdirc( s2 ) || s2 == PATH_SPLIT || s2 == ';' ) { // is ".."{dirc}
UnGetCH( s );
if( *dep_path != NULLCHAR ) {
PrtMsg( ERR | LOC | INVALID_SUFSUF );
}
return( lexFileName( DOT ) );
}
} else { /* get string {extc}+ */
while( pos < MAX_SUFFIX && isextc( s ) && s != L_CURL_PAREN ) {
ext[pos++] = s;
s = PreGetCH();
}
if( pos == MAX_SUFFIX ) {
PrtMsgExit(( FTL | LOC | MAXIMUM_TOKEN_IS, MAX_SUFFIX - 1 ));
}
ext[pos] = NULLCHAR;
}
UnGetCH( s );
targ_path = getCurlPath();
s = PreGetCH(); /* next char */
if( s == DOT ) { /* maybe of form "."{extc}*"."{extc}* */
ext[pos++] = s;
for( s = PreGetCH(); pos < MAX_SUFFIX && isextc( s ); s = PreGetCH() ) {
ext[pos++] = s;
}
if( pos == MAX_SUFFIX ) {
PrtMsgExit(( FTL | LOC | MAXIMUM_TOKEN_IS, MAX_SUFFIX - 1 )); //NOTREACHED
}
ext[pos] = NULLCHAR;
ret = TOK_SUFSUF;
} else {
if( *targ_path != NULLCHAR && *dep_path != NULLCHAR ) {
PrtMsg( ERR | LOC | INVALID_SUFSUF );
}
ret = TOK_SUF;
}
UnGetCH( s ); /* put back what we don't need */
if( *targ_path != NULLCHAR && *dep_path != NULLCHAR && ret == TOK_SUF ) {
PrtMsg( ERR | LOC | INVALID_SUFSUF );
} else if( ret == TOK_SUF && checkDotName( ext ) ) {
return( TOK_DOTNAME );
}
CurAttr.u.ptr = StrDupSafe( ext );
return( ret );
}
TOKEN_T LexParser( STRM_T s )
/************************************
* returns: next token for parser
* remarks: possibly defines a macro
*/
{
static BOOLEAN atstart = TRUE;
char *p;
for( ;; ) {
if( atstart ) {
/* atstart == TRUE if either of these succeed */
if( isws( s ) ) { /* cmd line */
return( lexCmd() );
}
if( ismacc( s ) && checkMacro( s ) ) { /* check if macro = body */
s = PreGetCH();
continue;
}
atstart = FALSE;
UnGetCH( s ); /* put back our probe */
s = STRM_MAGIC; /* force macro expansion */
}
switch( s ) {
case STRM_END:
atstart = TRUE;
return( TOK_END );
case EOL:
atstart = TRUE;
return( TOK_EOL );
case STRM_TMP_LEX_START:
case STRM_MAGIC:
p = DeMacroDoubleQuote( FALSE ); /* expand to next white space */
if( *p == NULLCHAR ) { /* already at ws */
FreeSafe( p );
s = PreGetCH(); /* eat the ws */
while( isws( s ) ) {
s = PreGetCH();
}
if( s == EOL ) {
atstart = TRUE;
return( TOK_EOL );
}
if( s == STRM_END ) {
atstart = TRUE;
return( TOK_END );
}
UnGetCH( s );
p = DeMacroDoubleQuote( FALSE );
}
UnGetCH( STRM_MAGIC ); /* mark spot we have to expand from nxt */
InsString( p, TRUE ); /* put expansion in stream */
break;
case SPACE: /* fall through */
case TAB:
break;
case L_CURL_PAREN: /* could only be a sufsuf */
case DOT:
UnGetCH( s );
return( lexDotName() ); /* could be a file... */
case SEMI: /* treat semi-colon as {nl}{ws} */
InsString( "\n ", FALSE );
break; /* try again */
case COLON:
s = PreGetCH();
if( s == COLON ) {
return( TOK_DCOLON );
}
UnGetCH( s );
return( TOK_SCOLON );
default:
if( isfilec( s ) || s == DOUBLEQUOTE ||
( (Glob.compat_nmake || Glob.compat_posix) && s == SPECIAL_TMP_DOL_C ) ) {
return( lexFileName( s ) );
}
PrtMsg( WRN | LOC | UNKNOWN_TOKEN, s );
break;
}
s = PreGetCH(); /* fetch a character */
}
}
TOKEN_T LexParser( STRM_T s )
/************************************
* returns: next token for parser
* remarks: possibly defines a macro
*/
{
static bool atstart = true;
char *p;
for( ;; ) {
if( atstart ) {
/* atstart == true if either of these succeed */
if( sisws( s ) ) { /* cmd line */
return( lexCmd() );
}
if( sismacc( s ) && checkMacro( s ) ) { /* check if macro = body */
s = PreGetCHR();
continue;
}
atstart = false;
UnGetCHR( s ); /* put back our probe */
s = STRM_MAGIC; /* force macro expansion */
}
switch( s ) {
case STRM_END:
atstart = true;
return( TOK_END );
case '\n':
atstart = true;
return( TOK_EOL );
case STRM_TMP_LEX_START:
case STRM_MAGIC:
p = DeMacroDoubleQuote( false ); /* expand to next white space */
if( *p == NULLCHAR ) { /* already at ws */
FreeSafe( p );
s = PreGetCHR(); /* eat the ws */
while( sisws( s ) ) {
s = PreGetCHR();
}
if( s == '\n' ) {
atstart = true;
return( TOK_EOL );
}
if( s == STRM_END ) {
atstart = true;
return( TOK_END );
}
UnGetCHR( s );
p = DeMacroDoubleQuote( false );
}
UnGetCHR( STRM_MAGIC ); /* mark spot we have to expand from nxt */
InsString( p, true ); /* put expansion in stream */
break;
case ' ':
case '\t':
break;
case '{': /* could only be a sufsuf */
case '.':
UnGetCHR( s );
return( lexDotName() ); /* could be a file... */
case ';': /* treat semi-colon as {nl}{ws} */
InsString( "\n ", false );
break; /* try again */
case ':':
s = PreGetCHR();
if( s == ':' ) {
return( TOK_DCOLON );
}
UnGetCHR( s );
return( TOK_SCOLON );
default:
if( sisfilec( s ) || s == '\"' || ( (Glob.compat_nmake || Glob.compat_posix) && s == SPECIAL_TMP_DOLLAR ) ) {
return( lexFileName( s ) );
}
PrtMsg( WRN | LOC | UNKNOWN_TOKEN, s );
break;
}
s = PreGetCHR(); /* fetch a character */
}
}
