Annotation of OpenXM/src/ox_math/parse.c, Revision 1.9
1.1 ohara 1: /* -*- mode: C; coding: euc-japan -*- */
1.9 ! ohara 2: /* $OpenXM: OpenXM/src/ox_math/parse.c,v 1.8 1999/11/07 12:12:55 ohara Exp $ */
1.5 ohara 3:
1.1 ohara 4: /* OX expression, CMO expression パーサ */
5:
6: #include <stdio.h>
7: #include <stdlib.h>
8: #include <string.h>
9: #include <sys/param.h>
1.2 ohara 10: #include <setjmp.h>
1.1 ohara 11: #include "oxtag.h"
12: #include "ox.h"
13: #include "parse.h"
14:
15: /* --- 構文解析部 --- */
1.2 ohara 16: /* (重要)セマンティックスについての注意.
17: CMO_LIST, CMO_STRING は、あらかじめ与えられた要素の個数を無視する.
18: CMO_MONOMIAL32 は無視しない. (つまりおかしいときは構文エラーになる)
19: */
20:
1.1 ohara 21: /* parse.c, lex.c では, Lisp 表現された CMO 文字列を読み込み,
1.5 ohara 22: バイト列を出力する. 中間表現として、cmo 構造体を利用する.
23: parse() はトークンの列から cmo 構造体を生成し、そのポインタを返す.
1.1 ohara 24: */
25:
26: /* 重要なことはパーサ(の各サブルーチン)は
27: 常にトークンをひとつ先読みしていると言うことである.
28: */
29:
30: /* 現在読み込み中のトークンを表す. */
31: static int token = 0;
32:
1.2 ohara 33: /* トークンの属性値. yylval は lex() によってセットされる. */
34: static union{
1.5 ohara 35: int d;
36: char *sym;
1.2 ohara 37: } yylval;
38:
39: /* pflag_cmo_addrev がセットされていれば、厳密には CMO expression では
40: ないもの, 例えば (CMO_STRING, "hello") も CMO に変換される. */
1.1 ohara 41:
1.2 ohara 42: static int pflag_cmo_addrev = 1; /* CMO の省略記法を許すか否かのフラグ */
1.1 ohara 43:
44: /* 関数の宣言 */
1.5 ohara 45: static int parse_error(char *s);
46: static int parse_lf();
47: static int parse_right_parenthesis();
48: static int parse_left_parenthesis();
49: static int parse_comma();
50: static int parse_integer();
1.1 ohara 51: static char *parse_string();
1.5 ohara 52: static cmo *parse_cmo_null();
53: static cmo *parse_cmo_int32();
54: static cmo *parse_cmo_string();
55: static cmo *parse_cmo_mathcap();
56: static cmo *parse_cmo_list();
57: static cmo *parse_cmo_monomial32();
58: static cmo *parse_cmo_zz();
59: static cmo *parse_cmo_zero();
60: static cmo *parse_cmo_dms_generic();
61: static cmo *parse_cmo_ring_by_name();
62: static cmo *parse_cmo_distributed_polynomial();
1.6 ohara 63: static cmo *parse_cmo_indeterminate();
1.5 ohara 64: static cmo *parse_cmo_error2();
65: static cmo *parse_cmo();
66: static int parse_sm();
67: static ox *parse_ox();
68: static ox *parse_ox_command();
69: static ox *parse_ox_data();
1.1 ohara 70:
1.3 ohara 71: static int is_token_cmo(int token)
1.1 ohara 72: {
1.2 ohara 73: return (token >= MIN_T_CMO && token < MAX_T_CMO) || token == TOKEN(CMO_ERROR2);
1.1 ohara 74: }
75:
1.3 ohara 76: static int is_token_sm(int token)
1.1 ohara 77: {
1.4 ohara 78: return token == TOKEN(SM);
1.1 ohara 79: }
80:
1.3 ohara 81: static int is_token_ox(int token)
1.1 ohara 82: {
83: return token >= MIN_T_OX && token < MAX_T_OX;
84: }
85:
1.2 ohara 86: static jmp_buf env_parse;
87:
88: /* 構文解析に失敗したことを意味する. */
89: static int parse_error(char *s)
90: {
1.8 ohara 91: fprintf(stderr, "syntax error: %s\n", s);
92: longjmp(env_parse, 1);
1.2 ohara 93: }
94:
1.1 ohara 95: /* この部分は書き換え予定. */
96: cmo *parse()
97: {
98: cmo *m;
99:
1.8 ohara 100: if (setjmp(env_parse) != 0) {
101: return NULL; /* 構文解析に失敗したら NULL を返す. */
102: }
1.2 ohara 103:
1.1 ohara 104: do{
105: token = lex();
106: }while (token == '\n');
107:
108: if (token == '(') {
109: token = lex();
1.3 ohara 110: if (is_token_cmo(token)) {
1.1 ohara 111: m = parse_cmo();
1.3 ohara 112: }else if(is_token_ox(token)) {
1.1 ohara 113: m = parse_ox();
114: }else {
1.3 ohara 115: parse_error("invalid symbol.");
1.1 ohara 116: }
117: parse_lf();
118: return m;
119: }
120: return NULL;
121: }
122:
123: /* トークンを先読みしない(重要). */
124: static int parse_lf()
125: {
126: if (token != '\n') {
1.3 ohara 127: parse_error("no new line.");
1.1 ohara 128: }
129: return 0;
130: }
131:
132:
1.5 ohara 133: static ox *parse_ox()
1.1 ohara 134: {
135: ox *m = NULL;
136:
137: switch(token) {
1.2 ohara 138: case TOKEN(OX_COMMAND):
1.1 ohara 139: token = lex();
140: m = parse_ox_command();
141: break;
1.2 ohara 142: case TOKEN(OX_DATA):
1.1 ohara 143: token = lex();
144: m = parse_ox_data();
145: break;
146: default:
1.3 ohara 147: parse_error("invalid ox.");
1.1 ohara 148: }
149: return m;
150: }
151:
1.5 ohara 152: static ox *parse_ox_data()
1.1 ohara 153: {
1.5 ohara 154: ox *m;
1.1 ohara 155:
156: parse_comma();
157: parse_left_parenthesis();
158: m = (ox *)new_ox_data(parse_cmo());
159: parse_right_parenthesis();
160: return m;
161: }
162:
1.5 ohara 163: static ox *parse_ox_command()
1.1 ohara 164: {
1.5 ohara 165: ox *m;
1.1 ohara 166:
167: parse_comma();
1.4 ohara 168: parse_left_parenthesis();
1.1 ohara 169: m = (ox *)new_ox_command(parse_sm());
170: parse_right_parenthesis();
171: return m;
172: }
173:
1.4 ohara 174: static int parse_sm()
175: {
176: int sm_code;
177: if (token != TOKEN(SM)) {
178: parse_error("no opecode.");
179: }
180: sm_code = yylval.d;
181: token = lex();
182: parse_right_parenthesis();
183: return sm_code;
184: }
185:
186:
1.1 ohara 187: /* 正しい入力ならば, parse_cmo を呼ぶ時点で, token には
1.2 ohara 188: TOKEN(CMO_xxx), TOKEN(OX_xxx) のいずれかがセットされている. */
1.1 ohara 189: static cmo *parse_cmo()
190: {
191: cmo *m = NULL;
192:
193: switch(token) {
1.2 ohara 194: case TOKEN(CMO_NULL):
1.1 ohara 195: token = lex();
196: m = parse_cmo_null();
197: break;
1.2 ohara 198: case TOKEN(CMO_INT32):
1.1 ohara 199: token = lex();
200: m = parse_cmo_int32();
201: break;
1.2 ohara 202: case TOKEN(CMO_STRING):
1.1 ohara 203: token = lex();
204: m = parse_cmo_string();
205: break;
1.2 ohara 206: case TOKEN(CMO_MATHCAP):
207: token = lex();
208: m = parse_cmo_mathcap();
209: break;
210: case TOKEN(CMO_LIST):
211: token = lex();
212: m = parse_cmo_list();
213: break;
214: case TOKEN(CMO_MONOMIAL32):
215: token = lex();
216: m = parse_cmo_monomial32();
217: break;
218: case TOKEN(CMO_ZZ):
1.1 ohara 219: token = lex();
220: m = parse_cmo_zz();
221: break;
1.2 ohara 222: case TOKEN(CMO_ZERO):
223: token = lex();
224: m = parse_cmo_zero();
225: break;
226: case TOKEN(CMO_DMS_GENERIC):
1.1 ohara 227: token = lex();
1.2 ohara 228: m = parse_cmo_dms_generic();
229: break;
230: case TOKEN(CMO_RING_BY_NAME):
231: token = lex();
232: m = parse_cmo_ring_by_name();
233: break;
1.3 ohara 234: case TOKEN(CMO_DISTRIBUTED_POLYNOMIAL):
235: token = lex();
236: m = parse_cmo_distributed_polynomial();
237: break;
1.6 ohara 238: case TOKEN(CMO_INDETERMINATE):
239: token = lex();
240: m = parse_cmo_indeterminate();
241: break;
1.2 ohara 242: case TOKEN(CMO_ERROR2):
243: token = lex();
244: m = parse_cmo_error2();
1.1 ohara 245: break;
246: default:
1.3 ohara 247: parse_error("invalid cmo.");
1.1 ohara 248: }
249: return m;
250: }
251:
1.2 ohara 252: static int parse_left_parenthesis()
1.1 ohara 253: {
1.2 ohara 254: if (token != '(') {
1.3 ohara 255: parse_error("no left parenthesis.");
1.1 ohara 256: }
257: token = lex();
258: }
259:
1.2 ohara 260: static int parse_right_parenthesis()
1.1 ohara 261: {
1.2 ohara 262: if (token != ')') {
1.3 ohara 263: parse_error("no right parenthesis.");
1.1 ohara 264: }
265: token = lex();
266: }
267:
268: static int parse_comma()
269: {
270: if (token != ',') {
1.3 ohara 271: parse_error("no comma.");
1.1 ohara 272: }
273: token = lex();
274: }
275:
276: static int parse_integer()
277: {
278: int val;
279: if (token != T_INTEGER) {
1.3 ohara 280: parse_error("no integer.");
1.1 ohara 281: }
282: val = yylval.d;
283: token = lex();
284: return val;
285: }
286:
287: static char *parse_string()
288: {
289: char *s;
290: if (token != T_STRING) {
1.3 ohara 291: parse_error("no string.");
1.1 ohara 292: }
293: s = yylval.sym;
294: token = lex();
295: return s;
296: }
297:
298: static cmo *parse_cmo_null()
299: {
300: parse_right_parenthesis();
1.2 ohara 301: return (cmo *)new_cmo_null();
1.1 ohara 302: }
303:
304: static cmo *parse_cmo_int32()
305: {
306: int i;
307:
308: parse_comma();
309: i = parse_integer();
310: parse_right_parenthesis();
1.2 ohara 311: return (cmo *)new_cmo_int32(i);
1.1 ohara 312: }
313:
314: static cmo *parse_cmo_string()
315: {
316: cmo_string *m;
317: char *s;
318:
319: parse_comma();
320: if (token == T_INTEGER) {
1.2 ohara 321: parse_integer();
1.1 ohara 322: parse_comma();
1.2 ohara 323: }else if (!pflag_cmo_addrev) {
1.3 ohara 324: parse_error("invalid cmo string.");
1.2 ohara 325: }
1.8 ohara 326: s = parse_string();
1.2 ohara 327: m = new_cmo_string(s);
328: parse_right_parenthesis();
329: return (cmo *)m;
330: }
331:
332: static cmo *parse_cmo_mathcap()
333: {
1.8 ohara 334: cmo *ob;
1.2 ohara 335:
336: parse_comma();
1.8 ohara 337: parse_left_parenthesis();
338: ob = parse_cmo();
1.2 ohara 339: parse_right_parenthesis();
340: return (cmo *)new_cmo_mathcap(ob);
341: }
342:
343: static cmo *parse_cmo_list()
344: {
345: int length=0;
346: int i=0;
347: cmo_list *m = new_cmo_list();
348: cmo *newcmo;
349:
1.8 ohara 350: if (token == ',') {
351: parse_comma();
352:
353: if (token == T_INTEGER) {
354: parse_integer();
355: parse_comma();
356: }else if (!pflag_cmo_addrev) {
357: parse_error("invalid cmo_list.");
358: }
1.2 ohara 359:
1.8 ohara 360: while(token == '(') {
361: parse_left_parenthesis();
362: newcmo = parse_cmo();
363: append_cmo_list(m, newcmo);
364: if (token != ',') {
365: break;
366: }
367: parse_comma();
368: }
369: }else if (!pflag_cmo_addrev) {
370: parse_error("invalid cmo_list.");
371: }
1.2 ohara 372: parse_right_parenthesis();
373: return (cmo *)m;
374: }
375:
376: static cmo *parse_cmo_monomial32()
377: {
1.8 ohara 378: int size;
379: int *exps;
380: int i;
381: cmo_monomial32 *m;
382: int tag;
383:
384: parse_comma();
385: size = parse_integer();
386: if (size < 0) {
387: parse_error("invalid value.");
388: }
389: m = new_cmo_monomial32_size(size);
390:
391: for(i=0; i<size; i++) {
392: parse_comma();
393: m->exps[i] = parse_integer();
394: }
395: parse_comma();
396: parse_left_parenthesis();
397: m->coef = parse_cmo();
398: tag = m->coef->tag;
1.3 ohara 399:
400: /* m->coef は CMO_ZZ 型か CMO_INT32 型でなければならない */
1.8 ohara 401: if (tag != CMO_ZZ && tag != CMO_INT32) {
402: parse_error("invalid cmo.");
403: }
1.2 ohara 404: parse_right_parenthesis();
405: return (cmo *)m;
406: }
407:
408: /* cmo_zz の内部を直接いじる. */
409: static cmo *parse_cmo_zz()
410: {
411: int length;
412: int i=0;
413: cmo_zz *m= NULL;
414:
415: parse_comma();
416: length = parse_integer();
417: if (token == ',') {
418: m = new_cmo_zz_size(length);
419:
420: length = abs(length);
421: for(i=0; i<length; i++) {
422: parse_comma();
423: m->mpz->_mp_d[i] = parse_integer();
1.1 ohara 424: }
1.2 ohara 425: }else if (pflag_cmo_addrev) {
426: m = new_cmo_zz_set_si(length);
1.1 ohara 427: }else {
1.3 ohara 428: parse_error("no comma.");
1.1 ohara 429: }
1.2 ohara 430:
1.1 ohara 431: parse_right_parenthesis();
432: return (cmo *)m;
433: }
434:
1.2 ohara 435: static cmo *parse_cmo_zero()
436: {
437: parse_right_parenthesis();
438: return (cmo *)new_cmo_zero();
439: }
440:
441: static cmo *parse_cmo_dms_generic()
442: {
443: parse_right_parenthesis();
444: return (cmo *)new_cmo_dms_generic();
445: }
446:
447: static cmo *parse_cmo_ring_by_name()
448: {
1.8 ohara 449: cmo *ob;
1.2 ohara 450:
451: parse_comma();
1.8 ohara 452: parse_left_parenthesis();
453: ob = parse_cmo();
1.3 ohara 454:
455: /* ob は CMO_STRING 型でなければならない */
1.8 ohara 456: if (ob->tag != CMO_STRING) {
457: parse_error("invalid cmo.");
458: }
1.2 ohara 459: parse_right_parenthesis();
460: return (cmo *)new_cmo_ring_by_name(ob);
461: }
462:
1.3 ohara 463: static cmo *parse_cmo_distributed_polynomial()
464: {
465: int length=0;
466: int i=0;
467: cmo_distributed_polynomial *m = new_cmo_distributed_polynomial();
468: cmo *ob;
1.8 ohara 469: int tag;
1.3 ohara 470:
1.8 ohara 471: if (token == ',') {
472: parse_comma();
473:
474: if (token == T_INTEGER) {
475: parse_integer();
476: parse_comma();
477: }else if (!pflag_cmo_addrev) {
478: parse_error("invalid d-polynomial.");
479: }
480:
481: parse_left_parenthesis();
482: m->ringdef = parse_cmo();
483: tag = m->ringdef->tag;
484: /* m->ringdef は DringDefinition でなければならない */
485: if (tag != CMO_RING_BY_NAME && tag != CMO_DMS_GENERIC
486: && tag != CMO_DMS_OF_N_VARIABLES) {
487: parse_error("invalid cmo.");
488: }
1.3 ohara 489:
1.8 ohara 490: parse_comma();
491:
492: while(token == '(') {
493: parse_left_parenthesis();
494: ob = parse_cmo();
495: if (ob->tag != CMO_MONOMIAL32 && ob->tag != CMO_ZERO) {
496: parse_error("invalid cmo.");
497: }
498: append_cmo_list((cmo_list *)m, ob);
499: if (token != ',') {
500: break;
501: }
502: parse_comma();
503: }
504: }else if (!pflag_cmo_addrev) {
505: parse_error("invalid d-polynomial.");
506: }
1.3 ohara 507: parse_right_parenthesis();
508: return (cmo *)m;
509: }
510:
1.6 ohara 511: static cmo *parse_cmo_indeterminate()
512: {
1.8 ohara 513: cmo *ob;
1.6 ohara 514:
515: parse_comma();
1.8 ohara 516: parse_left_parenthesis();
517: ob = parse_cmo();
1.6 ohara 518: parse_right_parenthesis();
519: return (cmo *)new_cmo_indeterminate(ob);
520: }
1.3 ohara 521:
1.2 ohara 522: static cmo *parse_cmo_error2()
523: {
1.8 ohara 524: cmo *ob;
1.2 ohara 525:
526: parse_comma();
1.8 ohara 527: parse_left_parenthesis();
528: ob = parse_cmo();
1.2 ohara 529: parse_right_parenthesis();
530: return (cmo *)new_cmo_error2(ob);
531: }
532:
1.1 ohara 533: /* --- 字句解析部 --- */
534:
535: /* lexical analyzer で読み飛ばされる文字なら何を初期値にしてもよい */
536: static int c = ' ';
537:
538: /* 一文字読み込む関数 */
539: static int (*GETC)() = getchar;
540:
541: int setgetc(int (*foo)())
542: {
543: GETC = foo;
544: }
545:
546: int resetgetc()
547: {
548: GETC = getchar;
549: }
550:
1.2 ohara 551: #define SIZE_BUFFER 8192
1.1 ohara 552: static char buffer[SIZE_BUFFER];
553:
554: /* 桁溢れの場合の対策はない */
555: static int lex_digit()
556: {
557: int d = 0;
558: do {
559: d = 10*d + (c - '0');
560: c = GETC();
561: } while(isdigit(c));
562: return d;
563: }
564:
1.7 ohara 565: #define MK_KEY_CMO(x) { #x , x , TOKEN(x) , IS_CMO }
566: #define MK_KEY_SM(x) { #x , x , TOKEN(SM) , IS_SM }
567: #define MK_KEY_OX(x) { #x , x , TOKEN(x) , IS_OX }
568:
569: static symbol symbol_list[] = {
1.8 ohara 570: MK_KEY_CMO(CMO_NULL),
1.7 ohara 571: MK_KEY_CMO(CMO_INT32),
1.8 ohara 572: MK_KEY_CMO(CMO_DATUM),
573: MK_KEY_CMO(CMO_STRING),
574: MK_KEY_CMO(CMO_MATHCAP),
575: MK_KEY_CMO(CMO_LIST),
576: MK_KEY_CMO(CMO_MONOMIAL32),
577: MK_KEY_CMO(CMO_ZZ),
578: MK_KEY_CMO(CMO_ZERO),
579: MK_KEY_CMO(CMO_DMS_GENERIC),
580: MK_KEY_CMO(CMO_RING_BY_NAME),
581: MK_KEY_CMO(CMO_INDETERMINATE),
582: MK_KEY_CMO(CMO_DISTRIBUTED_POLYNOMIAL),
583: MK_KEY_CMO(CMO_ERROR2),
1.7 ohara 584: MK_KEY_SM(SM_popCMO),
1.8 ohara 585: MK_KEY_SM(SM_popString),
586: MK_KEY_SM(SM_mathcap),
587: MK_KEY_SM(SM_pops),
588: MK_KEY_SM(SM_executeStringByLocalParser),
589: MK_KEY_SM(SM_executeFunction),
590: MK_KEY_SM(SM_setMathCap),
1.9 ! ohara 591: MK_KEY_SM(SM_shutdown),
1.7 ohara 592: MK_KEY_SM(SM_control_kill),
1.8 ohara 593: MK_KEY_SM(SM_control_reset_connection),
1.7 ohara 594: MK_KEY_OX(OX_COMMAND),
1.8 ohara 595: MK_KEY_OX(OX_DATA),
596: {NULL, 0, 0, 0} /* a gate keeper */
1.7 ohara 597: };
598:
599: symbol* lookup_by_symbol(char *key)
600: {
1.8 ohara 601: symbol *symp;
602: for(symp = symbol_list; symp->key != NULL; symp++) {
603: if (strcmp(key, symp->key)==0) {
604: return symp;
605: }
606: }
1.7 ohara 607: return NULL;
608: }
609:
610: symbol* lookup_by_token(int tok)
611: {
1.8 ohara 612: symbol *symp;
613: for(symp = symbol_list; symp->key != NULL; symp++) {
614: if (tok == symp->token) {
615: return symp;
616: }
617: }
1.7 ohara 618: return NULL;
619: }
620:
621: symbol* lookup_by_tag(int tag)
622: {
1.8 ohara 623: symbol *symp;
624: for(symp = symbol_list; symp->key != NULL; symp++) {
625: if (tag == symp->tag) {
626: return symp;
627: }
628: }
1.7 ohara 629: return NULL;
630: }
631:
632: symbol* lookup(int i)
633: {
1.8 ohara 634: return &symbol_list[i];
1.7 ohara 635: }
636:
1.1 ohara 637: /* バッファあふれした場合の対策をちゃんと考えるべき */
638: static char *lex_quoted_string()
639: {
640: int i;
641: char c0 = ' ';
642: char *s = NULL;
643: for (i=0; i<SIZE_BUFFER; i++) {
644: c = GETC();
645: if(c == '"') {
646: s = malloc(i+1);
647: buffer[i]='\0';
648: strcpy(s, buffer);
649:
650: c = GETC();
651: return s;
652: }else if (c == '\\') {
653: c0 = c;
654: c = GETC();
655: if (c != '"') {
656: buffer[i++] = c0;
657: }
658: }
659: buffer[i]=c;
660: }
661: fprintf(stderr, "buffer overflow!\n");
662: exit(1);
663: /* return NULL; */
664: }
665:
1.2 ohara 666: static int token_of_symbol(char *key)
667: {
1.8 ohara 668: symbol *symp = lookup_by_symbol(key);
669: if (symp != NULL) {
670: yylval.d = symp->tag;
671: return symp->token;
672: }
1.2 ohara 673: #if DEBUG
1.7 ohara 674: fprintf(stderr, "lex error:: \"%s\" is unknown symbol.\n", key);
1.2 ohara 675: #endif
1.1 ohara 676: return 0;
677: }
678:
1.2 ohara 679: static int lex_symbol()
1.1 ohara 680: {
681: int i;
682: for (i=0; i<SIZE_BUFFER; i++) {
683: if (!isalnum(c) && c != '_') {
684: buffer[i]='\0';
1.2 ohara 685: return token_of_symbol(buffer);
1.1 ohara 686: }
687: buffer[i]=c;
688: c = GETC();
689: }
690: fprintf(stderr, "buffer overflow!\n");
1.8 ohara 691: return 0;
1.1 ohara 692: }
693:
1.5 ohara 694: /* return する前に一文字先読みしておく. */
1.1 ohara 695: int lex()
696: {
697: int c_dash = 0;
698:
699: /* 空白をスキップする. */
700: while (isspace(c) && c != '\n') {
701: c = GETC();
702: }
703:
704: switch(c) {
705: case '(':
706: case ')':
707: case ',':
708: case '\n':
709: c_dash = c;
710: c = ' ';
711: return c_dash;
712: case EOF:
713: c = GETC();
714: return c_dash;
715: case '"': /* a quoted string! */
716: yylval.sym = lex_quoted_string();
717: return T_STRING;
718: default:
719: }
720:
721: if (isalpha(c)) { /* 識別子 */
1.2 ohara 722: return lex_symbol();
1.1 ohara 723: }
724:
725: /* 32bit 整数値 */
726: if (isdigit(c)){
727: yylval.d = lex_digit();
728: return T_INTEGER;
729: }
730: if (c == '-') {
731: c = GETC();
732: while (isspace(c) && c != '\n') {
733: c = GETC();
734: }
735: if (isdigit(c)){
736: yylval.d = - lex_digit();
737: return T_INTEGER;
738: }
739: return 0;
740: }
741:
742: c = GETC();
743: return 0;
744: }
745:
1.6 ohara 746: /* 一文字読み込む関数 */
1.1 ohara 747: static char *mygetc_line;
748: static int mygetc_counter;
749: static int mygetc_counter_max;
1.6 ohara 750: static int mygetc_nonlf_flag;
1.1 ohara 751:
752: int mygetc()
753: {
1.8 ohara 754: int c = '\0';
1.6 ohara 755:
1.8 ohara 756: if (mygetc_nonlf_flag && mygetc_counter <= mygetc_counter_max) {
757: c = mygetc_line[mygetc_counter++];
758: if (c == '\0') {
759: c = '\n';
760: mygetc_nonlf_flag = 0;
761: }
1.1 ohara 762: }
1.6 ohara 763: return c;
1.1 ohara 764: }
765:
766: int setmode_mygetc(char *s, int len)
767: {
1.8 ohara 768: mygetc_nonlf_flag=1;
1.1 ohara 769: mygetc_counter=0;
770: mygetc_counter_max=len;
771: mygetc_line=s;
1.2 ohara 772: }
773:
774: int setflag_parse(int flag)
775: {
1.8 ohara 776: pflag_cmo_addrev = flag;
1.1 ohara 777: }
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