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 const char *version = "version 20100523";
37 extern char **environ;
41 char *cmdname; /* gets argv[0] for error messages */
42 extern FILE *yyin; /* lex input file */
43 char *lexprog; /* points to program argument if it exists */
44 extern int errorflag; /* non-zero if any syntax errors; set by yyerror */
45 int compile_time = 2; /* for error printing: */
46 /* 2 = cmdline, 1 = compile, 0 = running */
48 #define MAX_PFILE 20 /* max number of -f's */
50 char *pfile[MAX_PFILE]; /* program filenames from -f's */
51 int npfile = 0; /* number of filenames */
52 int curpfile = 0; /* current filename */
54 int safe = 0; /* 1 => "safe" mode */
56 int main(int argc, char *argv[])
58 const char *fs = NULL;
60 setlocale(LC_CTYPE, "");
61 setlocale(LC_NUMERIC, "C"); /* for parsing cmdline & prog */
65 "usage: %s [-F fs] [-v var=value] [-f progfile | 'prog'] [file ...]\n",
69 signal(SIGFPE, fpecatch);
71 symtab = makesymtab(NSYMTAB/NSYMTAB);
72 while (argc > 1 && argv[1][0] == '-' && argv[1][1] != '\0') {
73 if (strcmp(argv[1],"-version") == 0 || strcmp(argv[1],"--version") == 0) {
74 printf("awk %s\n", version);
78 if (strncmp(argv[1], "--", 2) == 0) { /* explicit end of args */
85 if (strcmp(argv[1], "-safe") == 0)
88 case 'f': /* next argument is program filename */
92 FATAL("no program filename");
93 if (npfile >= MAX_PFILE - 1)
94 FATAL("too many -f options");
95 pfile[npfile++] = argv[1];
97 case 'F': /* set field separator */
98 if (argv[1][2] != 0) { /* arg is -Fsomething */
99 if (argv[1][2] == 't' && argv[1][3] == 0) /* wart: t=>\t */
101 else if (argv[1][2] != 0)
103 } else { /* arg is -F something */
105 if (argc > 1 && argv[1][0] == 't' && argv[1][1] == 0) /* wart: t=>\t */
107 else if (argc > 1 && argv[1][0] != 0)
110 if (fs == NULL || *fs == '\0')
111 WARNING("field separator FS is empty");
113 case 'v': /* -v a=1 to be done NOW. one -v for each */
114 if (argv[1][2] == '\0' && --argc > 1 && isclvar((++argv)[1]))
116 else if (argv[1][2] != '\0')
117 setclvar(&argv[1][2]);
120 dbg = atoi(&argv[1][2]);
123 printf("awk %s\n", version);
126 WARNING("unknown option %s ignored", argv[1]);
132 /* argv[1] is now the first argument */
133 if (npfile == 0) { /* no -f; first argument is program */
137 FATAL("no program given");
139 dprintf( ("program = |%s|\n", argv[1]) );
147 argv[0] = cmdname; /* put prog name at front of arglist */
148 dprintf( ("argc=%d, argv[0]=%s\n", argc, argv[0]) );
153 setlocale(LC_NUMERIC, ""); /* back to whatever it is locally */
155 *FS = qstring(fs, '\0');
156 dprintf( ("errorflag=%d\n", errorflag) );
157 if (errorflag == 0) {
165 int pgetc(void) /* get 1 character from awk program */
171 if (curpfile >= npfile)
173 if (strcmp(pfile[curpfile], "-") == 0)
175 else if ((yyin = fopen(pfile[curpfile], "r")) == NULL)
176 FATAL("can't open file %s", pfile[curpfile]);
179 if ((c = getc(yyin)) != EOF)
188 char *cursource(void) /* current source file name */
191 return pfile[curpfile];