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1.4 noro 1: /*
2: * Copyright (c) 1994-2000 FUJITSU LABORATORIES LIMITED
3: * All rights reserved.
4: *
5: * FUJITSU LABORATORIES LIMITED ("FLL") hereby grants you a limited,
6: * non-exclusive and royalty-free license to use, copy, modify and
7: * redistribute, solely for non-commercial and non-profit purposes, the
8: * computer program, "Risa/Asir" ("SOFTWARE"), subject to the terms and
9: * conditions of this Agreement. For the avoidance of doubt, you acquire
10: * only a limited right to use the SOFTWARE hereunder, and FLL or any
11: * third party developer retains all rights, including but not limited to
12: * copyrights, in and to the SOFTWARE.
13: *
14: * (1) FLL does not grant you a license in any way for commercial
15: * purposes. You may use the SOFTWARE only for non-commercial and
16: * non-profit purposes only, such as academic, research and internal
17: * business use.
18: * (2) The SOFTWARE is protected by the Copyright Law of Japan and
19: * international copyright treaties. If you make copies of the SOFTWARE,
20: * with or without modification, as permitted hereunder, you shall affix
21: * to all such copies of the SOFTWARE the above copyright notice.
22: * (3) An explicit reference to this SOFTWARE and its copyright owner
23: * shall be made on your publication or presentation in any form of the
24: * results obtained by use of the SOFTWARE.
25: * (4) In the event that you modify the SOFTWARE, you shall notify FLL by
1.5 noro 26: * e-mail at risa-admin@sec.flab.fujitsu.co.jp of the detailed specification
1.4 noro 27: * for such modification or the source code of the modified part of the
28: * SOFTWARE.
29: *
30: * THE SOFTWARE IS PROVIDED AS IS WITHOUT ANY WARRANTY OF ANY KIND. FLL
31: * MAKES ABSOLUTELY NO WARRANTIES, EXPRESSED, IMPLIED OR STATUTORY, AND
32: * EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS
33: * FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF THIRD PARTIES'
34: * RIGHTS. NO FLL DEALER, AGENT, EMPLOYEES IS AUTHORIZED TO MAKE ANY
35: * MODIFICATIONS, EXTENSIONS, OR ADDITIONS TO THIS WARRANTY.
36: * UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY, TORT, CONTRACT,
37: * OR OTHERWISE, SHALL FLL BE LIABLE TO YOU OR ANY OTHER PERSON FOR ANY
38: * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, PUNITIVE OR CONSEQUENTIAL
39: * DAMAGES OF ANY CHARACTER, INCLUDING, WITHOUT LIMITATION, DAMAGES
40: * ARISING OUT OF OR RELATING TO THE SOFTWARE OR THIS AGREEMENT, DAMAGES
41: * FOR LOSS OF GOODWILL, WORK STOPPAGE, OR LOSS OF DATA, OR FOR ANY
42: * DAMAGES, EVEN IF FLL SHALL HAVE BEEN INFORMED OF THE POSSIBILITY OF
43: * SUCH DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY. EVEN IF A PART
44: * OF THE SOFTWARE HAS BEEN DEVELOPED BY A THIRD PARTY, THE THIRD PARTY
45: * DEVELOPER SHALL HAVE NO LIABILITY IN CONNECTION WITH THE USE,
46: * PERFORMANCE OR NON-PERFORMANCE OF THE SOFTWARE.
47: *
1.26 ! saito 48: * $OpenXM: OpenXM_contrib2/asir2000/parse/lex.c,v 1.25 2003/05/30 00:47:24 noro Exp $
1.4 noro 49: */
1.1 noro 50: #include <ctype.h>
51: #include "ca.h"
52: #include "al.h"
53: #include "base.h"
54: #include "parse.h"
55: #include <sys/types.h>
56: #include <sys/stat.h>
1.10 noro 57: #if defined(VISUAL)
58: #include "ytab.h"
59: #else
1.1 noro 60: #include "y.tab.h"
1.10 noro 61: #endif
1.1 noro 62:
1.18 noro 63: static int Getc();
64: static void Ungetc(int c);
65: static void Gets(char *s);
66: static int skipspace();
67:
68: extern INFILE asir_infile;
1.1 noro 69: extern struct oTKWD kwd[];
70:
71: extern int main_parser;
72: extern char *parse_strp;
1.11 noro 73: extern int recv_intr;
1.1 noro 74:
1.2 noro 75: #define NBUFSIZ (BUFSIZ*10)
76: #define TBUFSIZ (BUFSIZ)
77:
78: #define REALLOC_NBUF \
79: if ( i >= nbufsize ) {\
80: nbufsize += NBUFSIZ;\
81: if ( nbuf == nbuf0 ) {\
82: nbuf = (char *)MALLOC_ATOMIC(nbufsize);\
83: bcopy(nbuf0,nbuf,nbufsize-NBUFSIZ);\
84: } else\
85: nbuf = REALLOC(nbuf,nbufsize);\
86: }
87:
88: #define REALLOC_TBUF \
89: if ( i >= tbufsize ) {\
90: tbufsize += TBUFSIZ;\
91: if ( tbuf == tbuf0 ) {\
92: tbuf = (char *)MALLOC_ATOMIC(tbufsize);\
93: bcopy(tbuf0,tbuf,tbufsize-TBUFSIZ);\
94: } else\
95: tbuf = REALLOC(tbuf,tbufsize);\
96: }
97:
98: #define READ_ALNUM_NBUF \
99: while ( 1 ) {\
100: c = Getc();\
101: if ( isalnum(c) ) {\
102: REALLOC_NBUF nbuf[i++] = c;\
103: } else\
104: break;\
105: }
106:
107: #define READ_DIGIT_NBUF \
108: while ( 1 ) {\
109: c = Getc();\
110: if ( isdigit(c) ) {\
111: REALLOC_NBUF nbuf[i++] = c;\
112: } else\
113: break;\
114: }
115:
1.18 noro 116: int yylex()
1.1 noro 117: {
118: #define yylvalp (&yylval)
119: register int c,c1;
120: register int *ptr;
121: char *cptr;
122: int d,i,j;
1.2 noro 123: char nbuf0[NBUFSIZ],tbuf0[TBUFSIZ];
124: char *nbuf, *tbuf;
125: int nbufsize, tbufsize;
1.1 noro 126: N n,n1;
127: Q q;
128: Obj r;
1.20 kondoh 129: int floatingpoint = 0;
130: double dbl;
131: Real real;
132: double atof();
133: extern int bigfloat;
134:
1.1 noro 135:
1.2 noro 136: /* initialize buffer pointers */
137: nbuf = nbuf0; tbuf = tbuf0;
138: nbufsize = NBUFSIZ; tbufsize = TBUFSIZ;
139:
1.1 noro 140: switch ( c = skipspace() ) {
141: case EOF :
142: asir_terminate(2); break;
143: case '0' :
144: while ( ( c = Getc() ) == '0' );
145: if ( c == '.' ) {
146: Ungetc(c); c = '0';
1.21 noro 147: } else if ( c == 'x' || c == 'X' ) {
1.1 noro 148: for ( i = 0; i < 8; i++ )
149: nbuf[i] = '0';
1.2 noro 150: READ_ALNUM_NBUF
151: Ungetc(c); REALLOC_NBUF nbuf[i] = 0;
1.1 noro 152: hexton(nbuf,&n1);
153: NTOQ(n1,1,q); r = (Obj)q;
154: yylvalp->p = (pointer)r;
155: return ( FORMULA );
1.21 noro 156: } else if ( c == 'b' || c == 'B' ) {
1.1 noro 157: for ( i = 0; i < 32; i++ )
158: nbuf[i] = '0';
1.2 noro 159: READ_ALNUM_NBUF
160: Ungetc(c); REALLOC_NBUF nbuf[i] = 0;
1.1 noro 161: binaryton(nbuf,&n1);
162: NTOQ(n1,1,q); r = (Obj)q;
163: yylvalp->p = (pointer)r;
164: return ( FORMULA );
165: } else if ( !isdigit(c) ) {
166: yylvalp->p = 0; Ungetc(c);
167: return ( FORMULA );
168: }
169: break;
170: case '\'' :
171: for ( i = 0; ; i++ ) {
172: c = Getc();
173: if ( c == '\'' )
174: break;
175: if ( c == '\\' )
176: c = Getc();
1.2 noro 177: REALLOC_TBUF tbuf[i] = c;
1.1 noro 178: }
1.2 noro 179: REALLOC_TBUF tbuf[i] = 0;
1.1 noro 180: cptr = (char *)MALLOC(strlen(tbuf)+1); strcpy(cptr,tbuf);
181: yylvalp->p = (pointer)cptr;
182: return LCASE; break;
183: case '"' :
184: i = 0;
185: do {
186: c = Getc();
187: if ( c == '\\' ) {
188: c1 = Getc();
189: if ( c1 == 'n' )
190: c1 = '\n';
1.2 noro 191: REALLOC_NBUF nbuf[i++] = c1;
192: } else {
193: REALLOC_NBUF nbuf[i++] = c;
194: }
1.1 noro 195: } while ( c != '"' );
1.2 noro 196: nbuf[i-1] = 0; /* REALLOC_NBUF is not necessary */
1.1 noro 197: cptr = (char *)MALLOC(strlen(nbuf)+1);
198: strcpy(cptr,nbuf); yylvalp->p = (pointer) cptr;
199: return ( STR ); break;
200: case '>': case '<': case '=': case '!':
201: if ( (c1 = Getc()) == '=' )
202: switch ( c ) {
203: case '>': yylvalp->i = (int)C_GE; break;
204: case '<': yylvalp->i = (int)C_LE; break;
205: case '=': yylvalp->i = (int)C_EQ; break;
206: case '!': yylvalp->i = (int)C_NE; break;
207: default: break;
208: }
209: else if ( (c == '<' && c1 == '<') || (c == '>' && c1 == '>') )
210: return c;
211: else {
212: Ungetc(c1);
213: switch ( c ) {
214: case '>': yylvalp->i = (int)C_GT; break;
215: case '<': yylvalp->i = (int)C_LT; break;
216: default: return c; break;
217: }
218: }
219: return CMP; break;
220: case '+': case '-': case '*': case '/': case '%': case '^':
221: case '|': case '&':
222: switch ( c ) {
223: case '+': yylvalp->p = (pointer)addfs; break;
224: case '-': yylvalp->p = (pointer)subfs; break;
225: case '*': yylvalp->p = (pointer)mulfs; break;
226: case '/': yylvalp->p = (pointer)divfs; break;
227: case '%': yylvalp->p = (pointer)remfs; break;
228: case '^': yylvalp->p = (pointer)pwrfs; break;
229: default: break;
230: }
231: if ( (c1 = Getc()) == c )
232: switch ( c ) {
233: case '+': case '-': return SELF; break;
234: case '|': return OR; break;
235: case '&': return AND; break;
236: default: Ungetc(c1); return c; break;
237: }
238: else if ( c1 == '=' )
239: return BOPASS;
240: else if ( (c == '-') && (c1 == '>') )
241: return POINT;
242: else {
243: Ungetc(c1); return c;
244: }
245: break;
246: default :
247: break;
248: }
249: if ( isdigit(c) ) {
250: for ( i = 0; i < DLENGTH; i++ )
251: nbuf[i] = '0';
1.2 noro 252: REALLOC_NBUF nbuf[i++] = c;
253: READ_DIGIT_NBUF
1.1 noro 254: if ( c == '.' ) {
1.20 kondoh 255: floatingpoint = 1;
1.1 noro 256:
1.2 noro 257: REALLOC_NBUF nbuf[i++] = c;
258: READ_DIGIT_NBUF
1.21 noro 259: if ( c == 'e' || c == 'E' ) {
1.2 noro 260: REALLOC_NBUF nbuf[i++] = c;
261: c = Getc();
262: if ( (c == '+') || (c == '-') ) {
263: REALLOC_NBUF nbuf[i++] = c;
264: } else
265: Ungetc(c);
266: READ_DIGIT_NBUF
1.1 noro 267: }
1.21 noro 268: } else if ( c == 'e' || c == 'E' ) {
1.20 kondoh 269: floatingpoint = 1;
270: REALLOC_NBUF nbuf[i++] = c;
271: c = Getc();
272: if ( (c == '+') || (c == '-') ) {
273: REALLOC_NBUF nbuf[i++] = c;
274: } else
275: Ungetc(c);
276: READ_DIGIT_NBUF
277: }
278: if ( floatingpoint ) {
1.2 noro 279: Ungetc(c); REALLOC_NBUF nbuf[i] = 0;
1.22 ohara 280: #if defined(PARI)
1.1 noro 281: if ( !bigfloat ) {
282: dbl = (double)atof(nbuf+DLENGTH);
283: MKReal(dbl,real); r = (Obj)real;
284: } else
285: strtobf(nbuf,(BF *)&r);
286: #else
287: dbl = (double)atof(nbuf+DLENGTH);
288: MKReal(dbl,real); r = (Obj)real;
289: #endif
290: } else {
291: Ungetc(c);
292: i -= DLENGTH; d = (i%DLENGTH?i/DLENGTH+1:i/DLENGTH);
293: n = NALLOC(d); PL(n) = d;
294: for ( j = 0, ptr = BD(n); j < d; j++ ,i -= DLENGTH )
295: ptr[j] = myatoi(nbuf+i);
296: bnton(DBASE,n,&n1);
297: NTOQ(n1,1,q); r = (Obj)q;
298: /* optobj(&r); */
299: }
300: yylvalp->p = (pointer)r;
301: return ( FORMULA );
1.25 noro 302: } else if ( isalpha(c) || c == ':' ) {
303: if ( c == ':' ) {
304: c1 = Getc();
305: if ( c1 != ':' ) {
306: Ungetc(c1);
307: return c;
308: }
309: c1 = Getc();
310: if ( !isalpha(c1) ) {
311: Ungetc(c1);
312: return COLONCOLON;
313: }
314: i = 0;
315: tbuf[i++] = ':';
316: tbuf[i++] = ':';
317: tbuf[i++] = c1;
318: } else {
319: i = 0;
320: tbuf[i++] = c;
321: }
1.2 noro 322: while ( 1 ) {
323: c = Getc();
1.24 noro 324: if ( isalpha(c)||isdigit(c)||(c=='_')||(c=='.') ) {
1.2 noro 325: REALLOC_TBUF tbuf[i++] = c;
326: } else
327: break;
328: }
329: REALLOC_TBUF tbuf[i] = 0; Ungetc(c);
1.1 noro 330: if ( isupper(tbuf[0]) ) {
331: cptr = (char *)MALLOC(strlen(tbuf)+1); strcpy(cptr,tbuf);
332: yylvalp->p = (pointer)cptr;
333: return UCASE;
334: } else {
335: for ( i = 0; kwd[i].name && strcmp(tbuf,kwd[i].name); i++ );
336: if ( kwd[i].name ) {
337: yylvalp->i = asir_infile->ln;
338: return kwd[i].token;
339: } else {
340: cptr = (char *)MALLOC(strlen(tbuf)+1); strcpy(cptr,tbuf);
341: yylvalp->p = (pointer)cptr;
342: return LCASE;
343: }
344: }
345: } else if ( c == '@' ) {
346: if ( isdigit(c = Getc()) ) {
1.2 noro 347: i = 0;
348: nbuf[i++] = c;
349: READ_DIGIT_NBUF
350: Ungetc(c); REALLOC_NBUF nbuf[i] = 0;
351: yylvalp->i = atoi(nbuf);
1.1 noro 352: return ANS;
353: } else if ( c == '@' ) {
354: yylvalp->i = MAX(0,APVS->n-1);
355: return ANS;
356: } else if ( c == '>' || c == '<' || c == '=' || c == '!' ) {
357: if ( (c1 = Getc()) == '=' )
358: switch ( c ) {
359: case '>': yylvalp->i = (int)L_GE; break;
360: case '<': yylvalp->i = (int)L_LE; break;
361: case '=': yylvalp->i = (int)L_EQ; break;
362: case '!': yylvalp->i = (int)L_NE; break;
363: default: break;
364: }
365: else {
366: Ungetc(c1);
367: switch ( c ) {
368: case '>': yylvalp->i = (int)L_GT; break;
369: case '<': yylvalp->i = (int)L_LT; break;
370: case '=': yylvalp->i = (int)L_EQ; break;
371: case '!': yylvalp->i = (int)L_NOT; return FOP_NOT; break;
372: default: break;
373: }
374: }
375: return LOP;
376: } else if ( c == '|' || c == '&' ) {
377: if ( (c1 = Getc()) != c )
378: Ungetc(c1);
379: switch ( c ) {
380: case '|': yylvalp->i = (int)L_OR;
381: return FOP_OR; break;
382: case '&': yylvalp->i = (int)L_AND;
383: return FOP_AND; break;
384: }
385: } else if ( isalpha(c) ) {
1.2 noro 386: i = 0;
387: tbuf[i++] = '@';
388: tbuf[i++] = c;
389: while ( 1 ) {
390: c = Getc();
391: if ( isalpha(c) ) {
392: REALLOC_TBUF tbuf[i++] = c;
393: } else
394: break;
395: }
396: Ungetc(c); REALLOC_TBUF tbuf[i] = 0;
1.1 noro 397: if ( !strcmp(tbuf,"@p") )
398: return GFPNGEN;
1.17 noro 399: else if ( !strcmp(tbuf,"@s") )
400: return GFSNGEN;
1.1 noro 401: else if ( !strcmp(tbuf,"@i") ) {
402: extern pointer IU;
403:
404: yylvalp->p = IU;
405: return FORMULA;
406: } else if ( !strcmp(tbuf,"@true") ) {
407: yylvalp->p = F_TRUE;
408: return FORMULA;
409: } else if ( !strcmp(tbuf,"@false") ) {
410: yylvalp->p = F_FALSE;
411: return FORMULA;
412: } else if ( !strcmp(tbuf,"@impl") ) {
413: yylvalp->i = (int)L_IMPL;
414: return FOP_IMPL;
415: } else if ( !strcmp(tbuf,"@repl") ) {
416: yylvalp->i = (int)L_REPL;
417: return FOP_REPL;
418: } else if ( !strcmp(tbuf,"@equiv") ) {
419: yylvalp->i = (int)L_EQUIV;
420: return FOP_EQUIV;
421: } else {
422: cptr = (char *)MALLOC(strlen(tbuf)+1); strcpy(cptr,tbuf);
423: yylvalp->p = (pointer)cptr;
424: return LCASE;
425: }
426: } else {
427: Ungetc(c);
428: return GF2NGEN;
429: }
430: } else
431: return ( c );
1.6 noro 432: }
433:
434: void purge_stdin()
435: {
1.7 noro 436: #if defined(__FreeBSD__)
1.6 noro 437: fpurge(stdin);
438: #elif defined(linux)
439: stdin->_IO_read_end = stdin->_IO_read_base;
440: stdin->_IO_read_ptr = stdin->_IO_read_base;
1.10 noro 441: #elif defined(VISUAL_LIB)
1.18 noro 442: void w_purge_stdin();
443:
1.10 noro 444: w_purge_stdin();
1.16 noro 445: #elif defined(sparc) || defined(__alpha) || defined(__SVR4) || defined(mips) || defined(VISUAL) || defined(_IBMR2)
1.6 noro 446: stdin->_ptr = stdin->_base; stdin->_cnt = 0;
1.26 ! saito 447: #elif (defined(__MACH__) && defined(__ppc__)) || defined(__CYGWIN__) || defined(__FreeBSD__)
1.15 noro 448: stdin->_r = 0; stdin->_p = stdin->_bf._base;
1.6 noro 449: #else
450: --->FIXIT
451: #endif
1.1 noro 452: }
453:
454: static int skipspace() {
455: int c,c1;
456:
457: for ( c = Getc(); ; )
458: switch ( c ) {
1.14 noro 459: case ' ': case '\t': case '\r':
1.1 noro 460: c = Getc(); break;
461: case '\n':
462: c = afternl(); break;
463: case '/':
464: if ( (c1 = Getc()) == '*' )
465: c = aftercomment();
466: else {
467: Ungetc(c1); return c;
468: }
469: break;
470: default:
471: return c; break;
472: }
473: }
474:
475: int afternl() {
476: int c,ac,i,quote;
477: char *ptr;
478: char *av[BUFSIZ];
479: static int ilevel = 0;
480: char buf[BUFSIZ];
481:
482: if ( !ilevel )
483: asir_infile->ln++;
484: while ( (c = Getc()) == '#' ) {
485: Gets(buf);
486: for ( quote = 0, ptr = buf; *ptr; ptr++ )
487: if ( *ptr == '"' )
488: quote = quote ? 0 : 1;
489: else if ( quote && (*ptr == ' ') )
490: *ptr = '_';
491: stoarg(buf,&ac,av);
492: if ( ac == 3 )
493: if ( (i = atoi(av[2])) == 1 )
494: ilevel++;
495: else if ( i == 2 )
496: ilevel--;
497: if ( !ilevel )
498: asir_infile->ln = atoi(av[0]);
499: }
500: return c;
501: }
502:
503: int aftercomment() {
504: int c,c1;
505:
506: for ( c = Getc(); ; ) {
507: c1 = Getc();
508: if ( (c == '*') && (c1 == '/') )
509: return Getc();
510: else
511: c = c1;
512: }
513: }
514:
1.18 noro 515: int myatoi(char *s)
1.1 noro 516: {
517: int i,r;
518: for ( i = 0, r = 0; i < DLENGTH; i++ ) r = r * 10 + ( s[i] - '0' );
519: return ( r );
520: }
521:
522: extern int ox_do_copy;
523:
1.18 noro 524: void yyerror(char *s)
1.1 noro 525: {
526: if ( main_parser )
527: if ( ox_do_copy ) {
528: /* push errors to DebugStack */
529: } else {
530: if ( asir_infile->fp == stdin )
531: fprintf(stderr,"%s\n",s);
532: else
533: fprintf(stderr,"\"%s\", near line %d: %s\n",asir_infile->name,asir_infile->ln,s);
534: }
535: else
536: fprintf(stderr,"exprparse : %s\n",s);
537: }
538:
539: int echoback;
540:
541: extern int read_exec_file, do_fep, do_file;
542:
543: unsigned char encrypt_char(unsigned char);
544: unsigned char decrypt_char(unsigned char);
545:
1.18 noro 546: int Egetc(FILE *fp)
1.1 noro 547: {
548: int c;
549:
550: if ( fp ) {
1.23 noro 551: #if FEP
1.13 noro 552: if ( do_fep && isatty(fileno(fp)) )
553: c = readline_getc();
554: else
555: #endif
556: c = getc(fp);
1.11 noro 557: #if defined(VISUAL)
558: if ( recv_intr ) {
559: #include <signal.h>
560: if ( recv_intr == 1 ) {
561: recv_intr = 0;
562: int_handler(SIGINT);
563: } else {
564: recv_intr = 0;
565: ox_usr1_handler(0);
566: }
567: }
568: #endif
1.1 noro 569: if ( c == EOF )
570: return c;
571: if ( asir_infile->encoded )
572: c = decrypt_char((unsigned char)c);
573: return c;
1.3 noro 574: } else if ( read_exec_file )
575: return EOF;
576: else {
1.1 noro 577: c = *parse_strp++;
578: if ( !c )
579: return EOF;
580: else
581: return c;
582: }
583: }
584:
1.18 noro 585: void Eungetc(int c,FILE *fp)
1.1 noro 586: {
587: if ( fp ) {
588: if ( asir_infile->encoded )
589: c = (int)encrypt_char((unsigned char)c);
1.23 noro 590: #if FEP
1.13 noro 591: if ( do_fep && isatty(fileno(fp)) )
592: readline_ungetc();
593: else
594: #endif
595: ungetc(c,fp);
1.1 noro 596: } else
597: *--parse_strp = c;
598: }
599:
600: static int Getc() {
601: int c;
602:
603: if ( main_parser ) {
604: while ( 1 ) {
605: if ((c = Egetc(asir_infile->fp)) == EOF)
606: if ( NEXT(asir_infile) ) {
607: closecurrentinput();
1.9 noro 608: /* if the input is the top level, generate error */
609: if ( !NEXT(asir_infile) )
610: error("end-of-file detected during parsing");
611: else
612: c = Getc();
1.1 noro 613: break;
614: } else if ( read_exec_file || do_file )
615: asir_terminate(2);
616: else {
617: if ( asir_infile->fp )
618: clearerr(asir_infile->fp);
619: }
620: else
621: break;
622: }
623: if ( echoback )
624: fputc(c,asir_out);
625: } else
626: c = *parse_strp++;
627: return ( c );
628: }
629:
1.18 noro 630: static void Ungetc(int c) {
1.1 noro 631: if ( main_parser ) {
632: Eungetc(c,asir_infile->fp);
633: if ( echoback )
634: fputc('',asir_out);
635: } else
636: *--parse_strp = c;
637: }
638:
1.18 noro 639: static void Gets(char *s)
1.1 noro 640: {
641: int c;
642:
643: while ( (c = Getc()) != '\n' )
644: *s++ = c;
645: *s = 0;
646: }
1.12 saito 647:
1.23 noro 648: #if FEP
1.12 saito 649:
650: static char *readline_line;
651: static int readline_nc,readline_index;
652: char *readline_console();
653:
654: int readline_getc()
655: {
656: char buf[BUFSIZ];
657:
658: if ( !readline_nc ) {
659: if ( readline_line )
660: free(readline_line);
661: sprompt(buf);
662: readline_line = readline_console(buf);
663: readline_nc = strlen(readline_line);
664: readline_index = 0;
665: }
666: readline_nc--;
667: return readline_line[readline_index++];
668: }
669:
670: void readline_ungetc()
671: {
672: readline_nc++; readline_index--;
673: }
674:
1.18 noro 675: char *readline_console(char *prompt)
1.12 saito 676: {
677: char *line;
678: int exp_result;
679: char *expansion;
680:
681: while ( 1 ) {
682: line = (char *)readline(prompt);
683: if ( line && *line ) {
684: using_history();
685: exp_result = history_expand(line,&expansion);
686: if ( !exp_result ) {
687: free(expansion);
688: for ( ; isspace(*line); line++ );
689: add_history(line);
690: break;
691: } else if ( exp_result > 0 ) {
692: free(line);
693: line = expansion;
694: break;
695: }
696: }
697: }
698: return line;
699: }
700: #endif