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 char *version = "version 19990602";
36 extern char **environ;
40 char *cmdname; /* gets argv[0] for error messages */
41 extern FILE *yyin; /* lex input file */
42 char *lexprog; /* points to program argument if it exists */
43 extern int errorflag; /* non-zero if any syntax errors; set by yyerror */
44 int compile_time = 2; /* for error printing: */
45 /* 2 = cmdline, 1 = compile, 0 = running */
47 char *pfile[20]; /* program filenames from -f's */
48 int npfile = 0; /* number of filenames */
49 int curpfile = 0; /* current filename */
51 int safe = 0; /* 1 => "safe" mode */
53 int main(int argc, char *argv[])
55 char *fs = NULL, *marg;
60 fprintf(stderr, "Usage: %s [-F fieldsep] [-mf n] [-mr n] [-v var=value] [-f programfile | 'program'] [file ...]\n", cmdname);
63 signal(SIGFPE, fpecatch);
65 symtab = makesymtab(NSYMTAB);
66 while (argc > 1 && argv[1][0] == '-' && argv[1][1] != '\0') {
67 if (strcmp(argv[1], "--") == 0) { /* explicit end of args */
74 if (strcmp(argv[1], "-safe") == 0)
77 case 'f': /* next argument is program filename */
81 FATAL("no program filename");
82 pfile[npfile++] = argv[1];
84 case 'F': /* set field separator */
85 if (argv[1][2] != 0) { /* arg is -Fsomething */
86 if (argv[1][2] == 't' && argv[1][3] == 0) /* wart: t=>\t */
88 else if (argv[1][2] != 0)
90 } else { /* arg is -F something */
92 if (argc > 1 && argv[1][0] == 't' && argv[1][1] == 0) /* wart: t=>\t */
94 else if (argc > 1 && argv[1][0] != 0)
97 if (fs == NULL || *fs == '\0')
98 WARNING("field separator FS is empty");
100 case 'v': /* -v a=1 to be done NOW. one -v for each */
101 if (argv[1][2] == '\0' && --argc > 1 && isclvar((++argv)[1]))
104 case 'm': /* more memory: -mr=record, -mf=fields */
105 /* no longer needed */
108 temp = atoi(&argv[1][3]);
111 temp = atoi(&argv[1][0]);
114 case 'r': recsize = temp; break;
115 case 'f': nfields = temp; break;
116 default: FATAL("unknown option %s\n", marg);
120 dbg = atoi(&argv[1][2]);
123 printf("awk %s\n", version);
125 case 'V': /* added for exptools "standard" */
126 printf("awk %s\n", version);
130 WARNING("unknown option %s ignored", argv[1]);
136 /* argv[1] is now the first argument */
137 if (npfile == 0) { /* no -f; first argument is program */
141 FATAL("no program given");
143 dprintf( ("program = |%s|\n", argv[1]) );
151 argv[0] = cmdname; /* put prog name at front of arglist */
152 dprintf( ("argc=%d, argv[0]=%s\n", argc, argv[0]) );
158 *FS = qstring(fs, '\0');
159 dprintf( ("errorflag=%d\n", errorflag) );
160 if (errorflag == 0) {
168 int pgetc(void) /* get 1 character from awk program */
174 if (curpfile >= npfile)
176 if (strcmp(pfile[curpfile], "-") == 0)
178 else if ((yyin = fopen(pfile[curpfile], "r")) == NULL)
179 FATAL("can't open file %s", pfile[curpfile]);
182 if ((c = getc(yyin)) != EOF)
191 char *cursource(void) /* current source file name */
194 return pfile[curpfile];