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";
40 char *cmdname; /* gets argv[0] for error messages */
41 extern Biobuf *yyin; /* lex input file */
42 char *lexprog; /* points to program argument if it exists */
43 int compile_time = 2; /* for error printing: */
44 /* 2 = cmdline, 1 = compile, 0 = running */
46 char *pfile[20]; /* program filenames from -f's */
47 int npfile = 0; /* number of filenames */
48 int curpfile = 0; /* current filename */
50 int safe = 0; /* 1 => "safe" mode */
52 void main(int argc, char *argv[])
54 char *fs = nil, *marg;
57 setfcr(getfcr() & ~FPINVAL);
59 Binit(&stdin, 0, OREAD);
60 Binit(&stdout, 1, OWRITE);
61 Binit(&stderr, 2, OWRITE);
65 Bprint(&stderr, "Usage: %s [-F fieldsep] [-mf n] [-mr n] [-v var=value] [-f programfile | 'program'] [file ...]\n", cmdname);
71 symtab = makesymtab(NSYMTAB);
72 while (argc > 1 && argv[1][0] == '-' && argv[1][1] != '\0') {
73 if (strcmp(argv[1], "--") == 0) { /* explicit end of args */
80 if (strcmp(argv[1], "-safe") == 0)
83 case 'f': /* next argument is program filename */
87 FATAL("no program filename");
88 pfile[npfile++] = argv[1];
90 case 'F': /* set field separator */
91 if (argv[1][2] != 0) { /* arg is -Fsomething */
92 if (argv[1][2] == 't' && argv[1][3] == 0) /* wart: t=>\t */
94 else if (argv[1][2] != 0)
96 } else { /* arg is -F something */
98 if (argc > 1 && argv[1][0] == 't' && argv[1][1] == 0) /* wart: t=>\t */
100 else if (argc > 1 && argv[1][0] != 0)
103 if (fs == nil || *fs == '\0')
104 WARNING("field separator FS is empty");
106 case 'v': /* -v a=1 to be done NOW. one -v for each */
107 if (argv[1][2] == '\0' && --argc > 1 && isclvar((++argv)[1]))
110 case 'm': /* more memory: -mr=record, -mf=fields */
111 /* no longer needed */
114 temp = atoi(&argv[1][3]);
117 temp = atoi(&argv[1][0]);
120 case 'r': recsize = temp; break;
121 case 'f': nfields = temp; break;
122 default: FATAL("unknown option %s\n", marg);
126 dbg = atoi(&argv[1][2]);
129 print("awk %s\n", version);
131 case 'V': /* added for exptools "standard" */
132 print("awk %s\n", version);
136 WARNING("unknown option %s ignored", argv[1]);
142 /* argv[1] is now the first argument */
143 if (npfile == 0) { /* no -f; first argument is program */
147 FATAL("no program given");
149 dprint( ("program = |%s|\n", argv[1]) );
157 argv[0] = cmdname; /* put prog name at front of arglist */
158 dprint( ("argc=%d, argv[0]=%s\n", argc, argv[0]) );
162 *FS = qstring(fs, '\0');
163 dprint( ("exitstatus=%s\n", exitstatus) );
164 if (exitstatus == nil) {
172 int pgetc(void) /* get 1 character from awk program */
178 if (curpfile >= npfile)
180 if (strcmp(pfile[curpfile], "-") == 0)
182 else if ((yyin = Bopen(pfile[curpfile], OREAD)) == nil)
183 FATAL("can't open file %s", pfile[curpfile]);
186 if ((c = Bgetc(yyin)) != Beof)
195 char *cursource(void) /* current source file name */
198 return pfile[curpfile];