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