1da2e3ebdSchin /***********************************************************************
2da2e3ebdSchin * *
3da2e3ebdSchin * This software is part of the ast package *
4*b30d1939SAndy Fiddaman * Copyright (c) 1985-2011 AT&T Intellectual Property *
5da2e3ebdSchin * and is licensed under the *
6*b30d1939SAndy Fiddaman * Eclipse Public License, Version 1.0 *
77c2fbfb3SApril Chin * by AT&T Intellectual Property *
8da2e3ebdSchin * *
9da2e3ebdSchin * A copy of the License is available at *
10*b30d1939SAndy Fiddaman * http://www.eclipse.org/org/documents/epl-v10.html *
11*b30d1939SAndy Fiddaman * (with md5 checksum b35adb5213ca9657e911e9befb180842) *
12da2e3ebdSchin * *
13da2e3ebdSchin * Information and Software Systems Research *
14da2e3ebdSchin * AT&T Research *
15da2e3ebdSchin * Florham Park NJ *
16da2e3ebdSchin * *
17da2e3ebdSchin * Glenn Fowler <gsf@research.att.com> *
18da2e3ebdSchin * David Korn <dgk@research.att.com> *
19da2e3ebdSchin * Phong Vo <kpv@research.att.com> *
20da2e3ebdSchin * *
21da2e3ebdSchin ***********************************************************************/
22da2e3ebdSchin #pragma prototyped
23da2e3ebdSchin /*
24da2e3ebdSchin * regexp interface and partial implementation
25da2e3ebdSchin * what a novel approach
26da2e3ebdSchin * don't do it again
27da2e3ebdSchin *
28da2e3ebdSchin * OBSOLETE: use <regex.h>
29da2e3ebdSchin */
30da2e3ebdSchin
31da2e3ebdSchin #ifndef _REGEXP_H
32da2e3ebdSchin #define _REGEXP_H
33da2e3ebdSchin
34da2e3ebdSchin #define NBRA 9
35da2e3ebdSchin
36da2e3ebdSchin typedef struct
37da2e3ebdSchin {
38da2e3ebdSchin char* re_braslist[NBRA];
39da2e3ebdSchin char* re_braelist[NBRA];
40da2e3ebdSchin char* re_loc1;
41da2e3ebdSchin char* re_loc2;
42da2e3ebdSchin char* re_locs;
43da2e3ebdSchin int re_circf;
44da2e3ebdSchin int re_nbra;
45da2e3ebdSchin int re_nodelim;
46da2e3ebdSchin int re_sed;
47da2e3ebdSchin } regexp_t;
48da2e3ebdSchin
49da2e3ebdSchin #define braslist _re_info.re_braslist
50da2e3ebdSchin #define braelist _re_info.re_braelist
51da2e3ebdSchin #define circf _re_info.re_circf
52da2e3ebdSchin #define loc1 _re_info.re_loc1
53da2e3ebdSchin #define loc2 _re_info.re_loc2
54da2e3ebdSchin #define locs _re_info.re_locs
55da2e3ebdSchin #define nbra _re_info.re_nbra
56da2e3ebdSchin #define nodelim _re_info.re_nodelim
57da2e3ebdSchin #define sed _re_info.re_sed
58da2e3ebdSchin
59da2e3ebdSchin #define advance(a,b) _re_exec(&_re_info,a,b,1)
60da2e3ebdSchin #define compile(a,b,c,d) _re_read(&_re_info,a,b,c,d)
61da2e3ebdSchin #define step(a,b) _re_exec(&_re_info,a,b,0)
62da2e3ebdSchin
63da2e3ebdSchin #if _BLD_ast && defined(__EXPORT__)
64da2e3ebdSchin #define extern __EXPORT__
65da2e3ebdSchin #endif
66da2e3ebdSchin
67da2e3ebdSchin extern int _re_comp(regexp_t*, const char*, char*, unsigned int);
68da2e3ebdSchin extern int _re_exec(regexp_t*, const char*, const char*, int);
69da2e3ebdSchin extern char* _re_putc(int);
70da2e3ebdSchin extern char* _re_read(regexp_t*, const char*, char*, const char*, int);
71da2e3ebdSchin
72da2e3ebdSchin #undef extern
73da2e3ebdSchin
74da2e3ebdSchin #ifndef _REGEXP_DECLARE
75da2e3ebdSchin
76da2e3ebdSchin regexp_t _re_info;
77da2e3ebdSchin
78da2e3ebdSchin char*
_re_read(register regexp_t * re,const char * instring,char * ep,const char * endbuf,int seof)79da2e3ebdSchin _re_read(register regexp_t* re, const char* instring, char* ep, const char* endbuf, int seof)
80da2e3ebdSchin {
81da2e3ebdSchin register int c;
82da2e3ebdSchin
83da2e3ebdSchin static const char* prev;
84da2e3ebdSchin
85da2e3ebdSchin #ifdef INIT
86da2e3ebdSchin INIT;
87da2e3ebdSchin #endif
88da2e3ebdSchin
89da2e3ebdSchin re->re_nodelim = 0;
90da2e3ebdSchin if ((c = GETC()) == seof || c == '\n' || c == -1 || c == 0)
91da2e3ebdSchin {
92da2e3ebdSchin if (c != seof)
93da2e3ebdSchin {
94da2e3ebdSchin UNGETC(c);
95da2e3ebdSchin re->re_nodelim = 1;
96da2e3ebdSchin }
97da2e3ebdSchin if (!re->re_sed && !prev)
98da2e3ebdSchin { ERROR(41); }
99da2e3ebdSchin RETURN((char*)endbuf);
100da2e3ebdSchin }
101da2e3ebdSchin UNGETC(c);
102da2e3ebdSchin prev = 0;
103da2e3ebdSchin for (;;)
104da2e3ebdSchin {
105da2e3ebdSchin if ((c = GETC()) == seof || c == '\n' || c == -1 || c == 0)
106da2e3ebdSchin {
107da2e3ebdSchin if (re->re_sed)
108da2e3ebdSchin { ERROR(36); }
109da2e3ebdSchin UNGETC(c);
110da2e3ebdSchin re->re_nodelim = 1;
111da2e3ebdSchin break;
112da2e3ebdSchin }
113da2e3ebdSchin if (c == '\\')
114da2e3ebdSchin {
115da2e3ebdSchin _re_putc(c);
116da2e3ebdSchin if ((c = GETC()) == seof || c == '\n' || c == -1 || c == 0)
117da2e3ebdSchin { ERROR(36); }
118da2e3ebdSchin }
119da2e3ebdSchin _re_putc(c);
120da2e3ebdSchin }
121da2e3ebdSchin if (c = _re_comp(re, _re_putc(0), ep, (char*)endbuf - ep))
122da2e3ebdSchin { ERROR(c); }
123da2e3ebdSchin prev = endbuf;
124da2e3ebdSchin RETURN((char*)prev);
125da2e3ebdSchin }
126da2e3ebdSchin
127da2e3ebdSchin #endif
128da2e3ebdSchin
129da2e3ebdSchin #endif
130