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("$FreeBSD$");
27 const char *version = "version 20190529 (FreeBSD)";
39 extern char **environ;
43 Awkfloat srand_seed = 1;
44 char *cmdname; /* gets argv[0] for error messages */
45 extern FILE *yyin; /* lex input file */
46 char *lexprog; /* points to program argument if it exists */
47 extern int errorflag; /* non-zero if any syntax errors; set by yyerror */
48 int compile_time = 2; /* for error printing: */
49 /* 2 = cmdline, 1 = compile, 0 = running */
51 #define MAX_PFILE 20 /* max number of -f's */
53 char *pfile[MAX_PFILE]; /* program filenames from -f's */
54 int npfile = 0; /* number of filenames */
55 int curpfile = 0; /* current filename */
57 int safe = 0; /* 1 => "safe" mode */
59 /* Can this work with recursive calls? I don't think so.
62 FATAL("segfault. Do you have an unbounded recursive call?", n);
66 int main(int argc, char *argv[])
68 const char *fs = NULL;
70 setlocale(LC_CTYPE, "");
71 setlocale(LC_COLLATE, "");
72 setlocale(LC_NUMERIC, "C"); /* for parsing cmdline & prog */
76 "usage: %s [-F fs] [-v var=value] [-f progfile | 'prog'] [file ...]\n",
80 signal(SIGFPE, fpecatch);
81 /*signal(SIGSEGV, segvcatch); experiment */
84 srandom((unsigned long) srand_seed);
87 symtab = makesymtab(NSYMTAB/NSYMTAB);
88 while (argc > 1 && argv[1][0] == '-' && argv[1][1] != '\0') {
89 if (strcmp(argv[1],"-version") == 0 || strcmp(argv[1],"--version") == 0) {
90 printf("awk %s\n", version);
94 if (strcmp(argv[1], "--") == 0) { /* explicit end of args */
101 if (strcmp(argv[1], "-safe") == 0)
104 case 'f': /* next argument is program filename */
105 if (argv[1][2] != 0) { /* arg is -fsomething */
106 if (npfile >= MAX_PFILE - 1)
107 FATAL("too many -f options");
108 pfile[npfile++] = &argv[1][2];
109 } else { /* arg is -f something */
112 FATAL("no program filename");
113 if (npfile >= MAX_PFILE - 1)
114 FATAL("too many -f options");
115 pfile[npfile++] = argv[1];
118 case 'F': /* set field separator */
119 if (argv[1][2] != 0) { /* arg is -Fsomething */
120 if (argv[1][2] == 't' && argv[1][3] == 0) /* wart: t=>\t */
122 else if (argv[1][2] != 0)
124 } else { /* arg is -F something */
126 if (argc > 1 && argv[1][0] == 't' && argv[1][1] == 0) /* wart: t=>\t */
128 else if (argc > 1 && argv[1][0] != 0)
131 if (fs == NULL || *fs == '\0')
132 WARNING("field separator FS is empty");
134 case 'v': /* -v a=1 to be done NOW. one -v for each */
135 if (argv[1][2] != 0) { /* arg is -vsomething */
136 if (isclvar(&argv[1][2]))
137 setclvar(&argv[1][2]);
139 FATAL("invalid -v option argument: %s", &argv[1][2]);
140 } else { /* arg is -v something */
143 FATAL("no variable name");
144 if (isclvar(argv[1]))
147 FATAL("invalid -v option argument: %s", argv[1]);
151 dbg = atoi(&argv[1][2]);
154 printf("awk %s\n", version);
157 WARNING("unknown option %s ignored", argv[1]);
163 /* argv[1] is now the first argument */
164 if (npfile == 0) { /* no -f; first argument is program */
168 FATAL("no program given");
170 dprintf( ("program = |%s|\n", argv[1]) );
178 argv[0] = cmdname; /* put prog name at front of arglist */
179 dprintf( ("argc=%d, argv[0]=%s\n", argc, argv[0]) );
184 setlocale(LC_NUMERIC, ""); /* back to whatever it is locally */
186 *FS = qstring(fs, '\0');
187 dprintf( ("errorflag=%d\n", errorflag) );
188 if (errorflag == 0) {
196 int pgetc(void) /* get 1 character from awk program */
202 if (curpfile >= npfile)
204 if (strcmp(pfile[curpfile], "-") == 0)
206 else if ((yyin = fopen(pfile[curpfile], "r")) == NULL)
207 FATAL("can't open file %s", pfile[curpfile]);
210 if ((c = getc(yyin)) != EOF)
219 char *cursource(void) /* current source file name */
222 return pfile[curpfile];