1 /**************************************************************** 2 Copyright (C) Lucent Technologies 1997 3 All Rights Reserved 4 5 Permission to use, copy, modify, and distribute this software and 6 its documentation for any purpose and without fee is hereby 7 granted, provided that the above copyright notice appear in all 8 copies and that both that the copyright notice and this 9 permission notice and warranty disclaimer appear in supporting 10 documentation, and that the name Lucent Technologies or any of 11 its entities not be used in advertising or publicity pertaining 12 to distribution of the software without specific, written prior 13 permission. 14 15 LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 16 INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. 17 IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY 18 SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 19 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER 20 IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, 21 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF 22 THIS SOFTWARE. 23 ****************************************************************/ 24 25 typedef double Awkfloat; 26 27 /* unsigned char is more trouble than it's worth */ 28 29 typedef unsigned char uschar; 30 31 #define xfree(a) { if ((a) != NULL) { free((char *) a); a = NULL; } } 32 33 #define DEBUG 34 #ifdef DEBUG 35 /* uses have to be doubly parenthesized */ 36 # define dprintf(x) if (dbg) printf x 37 #else 38 # define dprintf(x) 39 #endif 40 41 extern char errbuf[]; 42 43 extern int compile_time; /* 1 if compiling, 0 if running */ 44 extern int safe; /* 0 => unsafe, 1 => safe */ 45 46 #define RECSIZE (8 * 1024) /* sets limit on records, fields, etc., etc. */ 47 extern int recsize; /* size of current record, orig RECSIZE */ 48 49 extern char **FS; 50 extern char **RS; 51 extern char **ORS; 52 extern char **OFS; 53 extern char **OFMT; 54 extern Awkfloat *NR; 55 extern Awkfloat *FNR; 56 extern Awkfloat *NF; 57 extern char **FILENAME; 58 extern char **SUBSEP; 59 extern Awkfloat *RSTART; 60 extern Awkfloat *RLENGTH; 61 62 extern char *record; /* points to $0 */ 63 extern int lineno; /* line number in awk program */ 64 extern int errorflag; /* 1 if error has occurred */ 65 extern int donefld; /* 1 if record broken into fields */ 66 extern int donerec; /* 1 if record is valid (no fld has changed */ 67 extern char inputFS[]; /* FS at time of input, for field splitting */ 68 69 extern int dbg; 70 71 extern char *patbeg; /* beginning of pattern matched */ 72 extern int patlen; /* length of pattern matched. set in b.c */ 73 74 /* Cell: all information about a variable or constant */ 75 76 typedef struct Cell { 77 uschar ctype; /* OCELL, OBOOL, OJUMP, etc. */ 78 uschar csub; /* CCON, CTEMP, CFLD, etc. */ 79 char *nval; /* name, for variables only */ 80 char *sval; /* string value */ 81 Awkfloat fval; /* value as number */ 82 int tval; /* type info: STR|NUM|ARR|FCN|FLD|CON|DONTFREE */ 83 struct Cell *cnext; /* ptr to next if chained */ 84 } Cell; 85 86 typedef struct Array { /* symbol table array */ 87 int nelem; /* elements in table right now */ 88 int size; /* size of tab */ 89 Cell **tab; /* hash table pointers */ 90 } Array; 91 92 #define NSYMTAB 50 /* initial size of a symbol table */ 93 extern Array *symtab; 94 95 extern Cell *nrloc; /* NR */ 96 extern Cell *fnrloc; /* FNR */ 97 extern Cell *nfloc; /* NF */ 98 extern Cell *rstartloc; /* RSTART */ 99 extern Cell *rlengthloc; /* RLENGTH */ 100 101 /* Cell.tval values: */ 102 #define NUM 01 /* number value is valid */ 103 #define STR 02 /* string value is valid */ 104 #define DONTFREE 04 /* string space is not freeable */ 105 #define CON 010 /* this is a constant */ 106 #define ARR 020 /* this is an array */ 107 #define FCN 040 /* this is a function name */ 108 #define FLD 0100 /* this is a field $1, $2, ... */ 109 #define REC 0200 /* this is $0 */ 110 111 112 /* function types */ 113 #define FLENGTH 1 114 #define FSQRT 2 115 #define FEXP 3 116 #define FLOG 4 117 #define FINT 5 118 #define FSYSTEM 6 119 #define FRAND 7 120 #define FSRAND 8 121 #define FSIN 9 122 #define FCOS 10 123 #define FATAN 11 124 #define FTOUPPER 12 125 #define FTOLOWER 13 126 #define FFLUSH 14 127 128 /* Node: parse tree is made of nodes, with Cell's at bottom */ 129 130 typedef struct Node { 131 int ntype; 132 struct Node *nnext; 133 int lineno; 134 int nobj; 135 struct Node *narg[1]; /* variable: actual size set by calling malloc */ 136 } Node; 137 138 #define NIL ((Node *) 0) 139 140 extern Node *winner; 141 extern Node *nullstat; 142 extern Node *nullnode; 143 144 /* ctypes */ 145 #define OCELL 1 146 #define OBOOL 2 147 #define OJUMP 3 148 149 /* Cell subtypes: csub */ 150 #define CFREE 7 151 #define CCOPY 6 152 #define CCON 5 153 #define CTEMP 4 154 #define CNAME 3 155 #define CVAR 2 156 #define CFLD 1 157 #define CUNK 0 158 159 /* bool subtypes */ 160 #define BTRUE 11 161 #define BFALSE 12 162 163 /* jump subtypes */ 164 #define JEXIT 21 165 #define JNEXT 22 166 #define JBREAK 23 167 #define JCONT 24 168 #define JRET 25 169 #define JNEXTFILE 26 170 171 /* node types */ 172 #define NVALUE 1 173 #define NSTAT 2 174 #define NEXPR 3 175 176 177 extern int pairstack[], paircnt; 178 179 #define notlegal(n) (n <= FIRSTTOKEN || n >= LASTTOKEN || proctab[n-FIRSTTOKEN] == nullproc) 180 #define isvalue(n) ((n)->ntype == NVALUE) 181 #define isexpr(n) ((n)->ntype == NEXPR) 182 #define isjump(n) ((n)->ctype == OJUMP) 183 #define isexit(n) ((n)->csub == JEXIT) 184 #define isbreak(n) ((n)->csub == JBREAK) 185 #define iscont(n) ((n)->csub == JCONT) 186 #define isnext(n) ((n)->csub == JNEXT || (n)->csub == JNEXTFILE) 187 #define isret(n) ((n)->csub == JRET) 188 #define isrec(n) ((n)->tval & REC) 189 #define isfld(n) ((n)->tval & FLD) 190 #define isstr(n) ((n)->tval & STR) 191 #define isnum(n) ((n)->tval & NUM) 192 #define isarr(n) ((n)->tval & ARR) 193 #define isfcn(n) ((n)->tval & FCN) 194 #define istrue(n) ((n)->csub == BTRUE) 195 #define istemp(n) ((n)->csub == CTEMP) 196 #define isargument(n) ((n)->nobj == ARG) 197 /* #define freeable(p) (!((p)->tval & DONTFREE)) */ 198 #define freeable(p) ( ((p)->tval & (STR|DONTFREE)) == STR ) 199 200 /* structures used by regular expression matching machinery, mostly b.c: */ 201 202 #define NCHARS (256+1) /* 256 handles 8-bit chars; 128 does 7-bit */ 203 /* watch out in match(), etc. */ 204 #define NSTATES 32 205 206 typedef struct rrow { 207 long ltype; /* long avoids pointer warnings on 64-bit */ 208 union { 209 int i; 210 Node *np; 211 uschar *up; 212 } lval; /* because Al stores a pointer in it! */ 213 int *lfollow; 214 } rrow; 215 216 typedef struct fa { 217 uschar gototab[NSTATES][NCHARS]; 218 uschar out[NSTATES]; 219 uschar *restr; 220 int *posns[NSTATES]; 221 int anchor; 222 int use; 223 int initstat; 224 int curstat; 225 int accept; 226 int reset; 227 struct rrow re[1]; /* variable: actual size set by calling malloc */ 228 } fa; 229 230 231 #include "proto.h" 232