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 20020210";
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[])
59 fprintf(stderr, "Usage: %s [-f programfile | 'program'] [-Ffieldsep] [-v var=value] [files]\n", cmdname);
62 signal(SIGFPE, fpecatch);
64 symtab = makesymtab(NSYMTAB);
65 while (argc > 1 && argv[1][0] == '-' && argv[1][1] != '\0') {
66 if (strcmp(argv[1], "--") == 0) { /* explicit end of args */
73 if (strcmp(argv[1], "-safe") == 0)
76 case 'f': /* next argument is program filename */
80 FATAL("no program filename");
81 pfile[npfile++] = argv[1];
83 case 'F': /* set field separator */
84 if (argv[1][2] != 0) { /* arg is -Fsomething */
85 if (argv[1][2] == 't' && argv[1][3] == 0) /* wart: t=>\t */
87 else if (argv[1][2] != 0)
89 } else { /* arg is -F something */
91 if (argc > 1 && argv[1][0] == 't' && argv[1][1] == 0) /* wart: t=>\t */
93 else if (argc > 1 && argv[1][0] != 0)
96 if (fs == NULL || *fs == '\0')
97 WARNING("field separator FS is empty");
99 case 'v': /* -v a=1 to be done NOW. one -v for each */
100 if (argv[1][2] == '\0' && --argc > 1 && isclvar((++argv)[1]))
103 case 'm': /* more memory: -mr=record, -mf=fields */
104 /* no longer supported */
105 WARNING("obsolete option %s ignored", argv[1]);
108 dbg = atoi(&argv[1][2]);
111 printf("awk %s\n", version);
113 case 'V': /* added for exptools "standard" */
114 printf("awk %s\n", version);
118 WARNING("unknown option %s ignored", argv[1]);
124 /* argv[1] is now the first argument */
125 if (npfile == 0) { /* no -f; first argument is program */
129 FATAL("no program given");
131 dprintf( ("program = |%s|\n", argv[1]) );
139 argv[0] = cmdname; /* put prog name at front of arglist */
140 dprintf( ("argc=%d, argv[0]=%s\n", argc, argv[0]) );
146 *FS = qstring(fs, '\0');
147 dprintf( ("errorflag=%d\n", errorflag) );
148 if (errorflag == 0) {
156 int pgetc(void) /* get 1 character from awk program */
162 if (curpfile >= npfile)
164 if (strcmp(pfile[curpfile], "-") == 0)
166 else if ((yyin = fopen(pfile[curpfile], "r")) == NULL)
167 FATAL("can't open file %s", pfile[curpfile]);
170 if ((c = getc(yyin)) != EOF)
179 char *cursource(void) /* current source file name */
182 return pfile[curpfile];