1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2007 AT&T Knowledge Ventures * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Knowledge Ventures * 8 * * 9 * A copy of the License is available at * 10 * http://www.opensource.org/licenses/cpl1.0.txt * 11 * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12 * * 13 * Information and Software Systems Research * 14 * AT&T Research * 15 * Florham Park NJ * 16 * * 17 * Glenn Fowler <gsf@research.att.com> * 18 * David Korn <dgk@research.att.com> * 19 * Phong Vo <kpv@research.att.com> * 20 * * 21 ***********************************************************************/ 22 #pragma prototyped 23 /* 24 * regexp interface and partial implementation 25 * what a novel approach 26 * don't do it again 27 * 28 * OBSOLETE: use <regex.h> 29 */ 30 31 #ifndef _REGEXP_H 32 #define _REGEXP_H 33 34 #define NBRA 9 35 36 typedef struct 37 { 38 char* re_braslist[NBRA]; 39 char* re_braelist[NBRA]; 40 char* re_loc1; 41 char* re_loc2; 42 char* re_locs; 43 int re_circf; 44 int re_nbra; 45 int re_nodelim; 46 int re_sed; 47 } regexp_t; 48 49 #define braslist _re_info.re_braslist 50 #define braelist _re_info.re_braelist 51 #define circf _re_info.re_circf 52 #define loc1 _re_info.re_loc1 53 #define loc2 _re_info.re_loc2 54 #define locs _re_info.re_locs 55 #define nbra _re_info.re_nbra 56 #define nodelim _re_info.re_nodelim 57 #define sed _re_info.re_sed 58 59 #define advance(a,b) _re_exec(&_re_info,a,b,1) 60 #define compile(a,b,c,d) _re_read(&_re_info,a,b,c,d) 61 #define step(a,b) _re_exec(&_re_info,a,b,0) 62 63 #if _BLD_ast && defined(__EXPORT__) 64 #define extern __EXPORT__ 65 #endif 66 67 extern int _re_comp(regexp_t*, const char*, char*, unsigned int); 68 extern int _re_exec(regexp_t*, const char*, const char*, int); 69 extern char* _re_putc(int); 70 extern char* _re_read(regexp_t*, const char*, char*, const char*, int); 71 72 #undef extern 73 74 #ifndef _REGEXP_DECLARE 75 76 regexp_t _re_info; 77 78 char* 79 _re_read(register regexp_t* re, const char* instring, char* ep, const char* endbuf, int seof) 80 { 81 register int c; 82 83 static const char* prev; 84 85 #ifdef INIT 86 INIT; 87 #endif 88 89 re->re_nodelim = 0; 90 if ((c = GETC()) == seof || c == '\n' || c == -1 || c == 0) 91 { 92 if (c != seof) 93 { 94 UNGETC(c); 95 re->re_nodelim = 1; 96 } 97 if (!re->re_sed && !prev) 98 { ERROR(41); } 99 RETURN((char*)endbuf); 100 } 101 UNGETC(c); 102 prev = 0; 103 for (;;) 104 { 105 if ((c = GETC()) == seof || c == '\n' || c == -1 || c == 0) 106 { 107 if (re->re_sed) 108 { ERROR(36); } 109 UNGETC(c); 110 re->re_nodelim = 1; 111 break; 112 } 113 if (c == '\\') 114 { 115 _re_putc(c); 116 if ((c = GETC()) == seof || c == '\n' || c == -1 || c == 0) 117 { ERROR(36); } 118 } 119 _re_putc(c); 120 } 121 if (c = _re_comp(re, _re_putc(0), ep, (char*)endbuf - ep)) 122 { ERROR(c); } 123 prev = endbuf; 124 RETURN((char*)prev); 125 } 126 127 #endif 128 129 #endif 130