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1 | /*- |
2 | * Copyright (c) 1991 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
ad787160 C |
5 | * This module is believed to contain source code proprietary to AT&T. |
6 | * Use and redistribution is subject to the Berkeley Software License | |
7 | * Agreement and your Software Agreement with AT&T (Western Electric). | |
2791ff57 KB |
8 | */ |
9 | ||
10 | #ifndef lint | |
11 | char copyright[] = | |
12 | "@(#) Copyright (c) 1991 The Regents of the University of California.\n\ | |
13 | All rights reserved.\n"; | |
14 | #endif /* not lint */ | |
15 | ||
b803c326 | 16 | #ifndef lint |
ad787160 | 17 | static char sccsid[] = "@(#)main.c 4.6 (Berkeley) 4/17/91"; |
2791ff57 | 18 | #endif /* not lint */ |
90a429fa KM |
19 | |
20 | #include "stdio.h" | |
21 | #include "ctype.h" | |
22 | #include "awk.def" | |
23 | #include "awk.h" | |
24 | #define TOLOWER(c) (isupper(c) ? tolower(c) : c) /* ugh!!! */ | |
25 | ||
26 | int dbg = 0; | |
569c4905 | 27 | int ldbg = 0; |
90a429fa KM |
28 | int svflg = 0; |
29 | int rstflg = 0; | |
30 | int svargc; | |
31 | char **svargv, **xargv; | |
32 | extern FILE *yyin; /* lex input file */ | |
33 | char *lexprog; /* points to program argument if it exists */ | |
34 | extern errorflag; /* non-zero if any syntax errors; set by yyerror */ | |
35 | ||
36 | int filefd, symnum, ansfd; | |
37 | char *filelist; | |
38 | extern int maxsym, errno; | |
39 | main(argc, argv) int argc; char *argv[]; { | |
40 | if (argc == 1) | |
41 | error(FATAL, "Usage: awk [-f source | 'cmds'] [files]"); | |
90a429fa KM |
42 | syminit(); |
43 | while (argc > 1) { | |
44 | argc--; | |
45 | argv++; | |
46 | /* this nonsense is because gcos argument handling */ | |
47 | /* folds -F into -f. accordingly, one checks the next | |
48 | /* character after f to see if it's -f file or -Fx. | |
49 | */ | |
50 | if (argv[0][0] == '-' && TOLOWER(argv[0][1]) == 'f' && argv[0][2] == '\0') { | |
26758489 KB |
51 | if (argv[1][0] == '-' && argv[1][1] == '\0') |
52 | yyin = stdin; | |
53 | else { | |
54 | yyin = fopen(argv[1], "r"); | |
55 | if (yyin == NULL) | |
56 | error(FATAL, "can't open %s", argv[1]); | |
57 | } | |
90a429fa KM |
58 | argc--; |
59 | argv++; | |
60 | break; | |
61 | } else if (argv[0][0] == '-' && TOLOWER(argv[0][1]) == 'f') { /* set field sep */ | |
62 | if (argv[0][2] == 't') /* special case for tab */ | |
63 | **FS = '\t'; | |
64 | else | |
65 | **FS = argv[0][2]; | |
66 | continue; | |
67 | } else if (argv[0][0] != '-') { | |
68 | dprintf("cmds=|%s|\n", argv[0], NULL, NULL); | |
69 | yyin = NULL; | |
70 | lexprog = argv[0]; | |
71 | argv[0] = argv[-1]; /* need this space */ | |
72 | break; | |
73 | } else if (strcmp("-d", argv[0])==0) { | |
74 | dbg = 1; | |
75 | } | |
569c4905 SL |
76 | else if (strcmp("-l", argv[0])==0) { |
77 | ldbg = 1; | |
78 | } | |
90a429fa KM |
79 | else if(strcmp("-S", argv[0]) == 0) { |
80 | svflg = 1; | |
81 | } | |
82 | else if(strncmp("-R", argv[0], 2) == 0) { | |
83 | if(thaw(argv[0] + 2) == 0) | |
84 | rstflg = 1; | |
85 | else { | |
86 | fprintf(stderr, "not restored\n"); | |
87 | exit(1); | |
88 | } | |
89 | } | |
90 | } | |
91 | if (argc <= 1) { | |
92 | argv[0][0] = '-'; | |
93 | argv[0][1] = '\0'; | |
94 | argc++; | |
95 | argv--; | |
96 | } | |
97 | svargc = --argc; | |
98 | svargv = ++argv; | |
99 | dprintf("svargc=%d svargv[0]=%s\n", svargc, svargv[0], NULL); | |
100 | *FILENAME = *svargv; /* initial file name */ | |
101 | if(rstflg == 0) | |
102 | yyparse(); | |
103 | dprintf("errorflag=%d\n", errorflag, NULL, NULL); | |
104 | if (errorflag) | |
105 | exit(errorflag); | |
106 | if(svflg) { | |
107 | svflg = 0; | |
108 | if(freeze("awk.out") != 0) | |
109 | fprintf(stderr, "not saved\n"); | |
110 | exit(0); | |
111 | } | |
112 | run(); | |
113 | exit(errorflag); | |
114 | } | |
115 | ||
90a429fa KM |
116 | yywrap() |
117 | { | |
118 | return(1); | |
119 | } |