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 20091126 (FreeBSD)";
40 extern char **environ;
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 int main(int argc, char *argv[])
61 const char *fs = NULL;
63 setlocale(LC_CTYPE, "");
64 setlocale(LC_COLLATE, "");
65 setlocale(LC_NUMERIC, "C"); /* for parsing cmdline & prog */
69 "usage: %s [-F fs] [-v var=value] [-f progfile | 'prog'] [file ...]\n",
73 signal(SIGFPE, fpecatch);
75 symtab = makesymtab(NSYMTAB/NSYMTAB);
76 while (argc > 1 && argv[1][0] == '-' && argv[1][1] != '\0') {
77 if (strcmp(argv[1],"-version") == 0 || strcmp(argv[1],"--version") == 0) {
78 printf("awk %s\n", version);
82 if (strncmp(argv[1], "--", 2) == 0) { /* explicit end of args */
89 if (strcmp(argv[1], "-safe") == 0)
92 case 'f': /* next argument is program filename */
93 if (argv[1][2] != 0) { /* arg is -fsomething */
94 if (npfile >= MAX_PFILE - 1)
95 FATAL("too many -f options");
96 pfile[npfile++] = &argv[1][2];
97 } else { /* arg is -f something */
100 FATAL("no program filename");
101 if (npfile >= MAX_PFILE - 1)
102 FATAL("too many -f options");
103 pfile[npfile++] = argv[1];
106 case 'F': /* set field separator */
107 if (argv[1][2] != 0) { /* arg is -Fsomething */
108 if (argv[1][2] == 't' && argv[1][3] == 0) /* wart: t=>\t */
110 else if (argv[1][2] != 0)
112 } else { /* arg is -F something */
114 if (argc > 1 && argv[1][0] == 't' && argv[1][1] == 0) /* wart: t=>\t */
116 else if (argc > 1 && argv[1][0] != 0)
119 if (fs == NULL || *fs == '\0')
120 WARNING("field separator FS is empty");
122 case 'v': /* -v a=1 to be done NOW. one -v for each */
123 if (argv[1][2] != 0) { /* arg is -vsomething */
125 setclvar(&argv[1][2]);
126 } else { /* arg is -v something */
128 if (argc > 1 && isclvar(argv[1]))
133 dbg = atoi(&argv[1][2]);
136 printf("awk %s\n", version);
139 WARNING("unknown option %s ignored", argv[1]);
145 /* argv[1] is now the first argument */
146 if (npfile == 0) { /* no -f; first argument is program */
150 FATAL("no program given");
152 dprintf( ("program = |%s|\n", argv[1]) );
160 argv[0] = cmdname; /* put prog name at front of arglist */
161 dprintf( ("argc=%d, argv[0]=%s\n", argc, argv[0]) );
166 setlocale(LC_NUMERIC, ""); /* back to whatever it is locally */
168 *FS = qstring(fs, '\0');
169 dprintf( ("errorflag=%d\n", errorflag) );
170 if (errorflag == 0) {
178 int pgetc(void) /* get 1 character from awk program */
184 if (curpfile >= npfile)
186 if (strcmp(pfile[curpfile], "-") == 0)
188 else if ((yyin = fopen(pfile[curpfile], "r")) == NULL)
189 FATAL("can't open file %s", pfile[curpfile]);
192 if ((c = getc(yyin)) != EOF)
201 char *cursource(void) /* current source file name */
204 return pfile[curpfile];