1 /****************************************************************
2 Copyright (C) Lucent Technologies 1997
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
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
23 ****************************************************************/
25 #include <sys/cdefs.h>
26 __FBSDID("$FreeBSD$");
28 const char *version = "version 20121220 (FreeBSD)";
40 extern char **environ;
44 Awkfloat srand_seed = 1;
45 char *cmdname; /* gets argv[0] for error messages */
46 extern FILE *yyin; /* lex input file */
47 char *lexprog; /* points to program argument if it exists */
48 extern int errorflag; /* non-zero if any syntax errors; set by yyerror */
49 int compile_time = 2; /* for error printing: */
50 /* 2 = cmdline, 1 = compile, 0 = running */
52 #define MAX_PFILE 20 /* max number of -f's */
54 char *pfile[MAX_PFILE]; /* program filenames from -f's */
55 int npfile = 0; /* number of filenames */
56 int curpfile = 0; /* current filename */
58 int safe = 0; /* 1 => "safe" mode */
60 int main(int argc, char *argv[])
62 const char *fs = NULL;
64 setlocale(LC_CTYPE, "");
65 setlocale(LC_COLLATE, "");
66 setlocale(LC_NUMERIC, "C"); /* for parsing cmdline & prog */
70 "usage: %s [-F fs] [-v var=value] [-f progfile | 'prog'] [file ...]\n",
74 signal(SIGFPE, fpecatch);
77 srandom((unsigned long) srand_seed);
80 symtab = makesymtab(NSYMTAB/NSYMTAB);
81 while (argc > 1 && argv[1][0] == '-' && argv[1][1] != '\0') {
82 if (strcmp(argv[1],"-version") == 0 || strcmp(argv[1],"--version") == 0) {
83 printf("awk %s\n", version);
87 if (strncmp(argv[1], "--", 2) == 0) { /* explicit end of args */
94 if (strcmp(argv[1], "-safe") == 0)
97 case 'f': /* next argument is program filename */
98 if (argv[1][2] != 0) { /* arg is -fsomething */
99 if (npfile >= MAX_PFILE - 1)
100 FATAL("too many -f options");
101 pfile[npfile++] = &argv[1][2];
102 } else { /* arg is -f something */
105 FATAL("no program filename");
106 if (npfile >= MAX_PFILE - 1)
107 FATAL("too many -f options");
108 pfile[npfile++] = argv[1];
111 case 'F': /* set field separator */
112 if (argv[1][2] != 0) { /* arg is -Fsomething */
113 if (argv[1][2] == 't' && argv[1][3] == 0) /* wart: t=>\t */
115 else if (argv[1][2] != 0)
117 } else { /* arg is -F something */
119 if (argc > 1 && argv[1][0] == 't' && argv[1][1] == 0) /* wart: t=>\t */
121 else if (argc > 1 && argv[1][0] != 0)
124 if (fs == NULL || *fs == '\0')
125 WARNING("field separator FS is empty");
127 case 'v': /* -v a=1 to be done NOW. one -v for each */
128 if (argv[1][2] != 0) { /* arg is -vsomething */
129 if (isclvar(&argv[1][2]))
130 setclvar(&argv[1][2]);
132 FATAL("invalid -v option argument: %s", &argv[1][2]);
133 } else { /* arg is -v something */
136 FATAL("no variable name");
137 if (isclvar(argv[1]))
140 FATAL("invalid -v option argument: %s", argv[1]);
144 dbg = atoi(&argv[1][2]);
147 printf("awk %s\n", version);
150 WARNING("unknown option %s ignored", argv[1]);
156 /* argv[1] is now the first argument */
157 if (npfile == 0) { /* no -f; first argument is program */
161 FATAL("no program given");
163 dprintf( ("program = |%s|\n", argv[1]) );
171 argv[0] = cmdname; /* put prog name at front of arglist */
172 dprintf( ("argc=%d, argv[0]=%s\n", argc, argv[0]) );
177 setlocale(LC_NUMERIC, ""); /* back to whatever it is locally */
179 *FS = qstring(fs, '\0');
180 dprintf( ("errorflag=%d\n", errorflag) );
181 if (errorflag == 0) {
189 int pgetc(void) /* get 1 character from awk program */
195 if (curpfile >= npfile)
197 if (strcmp(pfile[curpfile], "-") == 0)
199 else if ((yyin = fopen(pfile[curpfile], "r")) == NULL)
200 FATAL("can't open file %s", pfile[curpfile]);
203 if ((c = getc(yyin)) != EOF)
212 char *cursource(void) /* current source file name */
215 return pfile[curpfile];