Commit | Line | Data |
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b803c326 | 1 | #ifndef lint |
569c4905 | 2 | static char sccsid[] = "@(#)main.c 4.4 (Berkeley) %G%"; |
b803c326 | 3 | #endif |
90a429fa KM |
4 | |
5 | #include "stdio.h" | |
6 | #include "ctype.h" | |
7 | #include "awk.def" | |
8 | #include "awk.h" | |
9 | #define TOLOWER(c) (isupper(c) ? tolower(c) : c) /* ugh!!! */ | |
10 | ||
11 | int dbg = 0; | |
569c4905 | 12 | int ldbg = 0; |
90a429fa KM |
13 | int svflg = 0; |
14 | int rstflg = 0; | |
15 | int svargc; | |
16 | char **svargv, **xargv; | |
17 | extern FILE *yyin; /* lex input file */ | |
18 | char *lexprog; /* points to program argument if it exists */ | |
19 | extern errorflag; /* non-zero if any syntax errors; set by yyerror */ | |
20 | ||
21 | int filefd, symnum, ansfd; | |
22 | char *filelist; | |
23 | extern int maxsym, errno; | |
24 | main(argc, argv) int argc; char *argv[]; { | |
25 | if (argc == 1) | |
26 | error(FATAL, "Usage: awk [-f source | 'cmds'] [files]"); | |
90a429fa KM |
27 | syminit(); |
28 | while (argc > 1) { | |
29 | argc--; | |
30 | argv++; | |
31 | /* this nonsense is because gcos argument handling */ | |
32 | /* folds -F into -f. accordingly, one checks the next | |
33 | /* character after f to see if it's -f file or -Fx. | |
34 | */ | |
35 | if (argv[0][0] == '-' && TOLOWER(argv[0][1]) == 'f' && argv[0][2] == '\0') { | |
36 | yyin = fopen(argv[1], "r"); | |
37 | if (yyin == NULL) | |
38 | error(FATAL, "can't open %s", argv[1]); | |
39 | argc--; | |
40 | argv++; | |
41 | break; | |
42 | } else if (argv[0][0] == '-' && TOLOWER(argv[0][1]) == 'f') { /* set field sep */ | |
43 | if (argv[0][2] == 't') /* special case for tab */ | |
44 | **FS = '\t'; | |
45 | else | |
46 | **FS = argv[0][2]; | |
47 | continue; | |
48 | } else if (argv[0][0] != '-') { | |
49 | dprintf("cmds=|%s|\n", argv[0], NULL, NULL); | |
50 | yyin = NULL; | |
51 | lexprog = argv[0]; | |
52 | argv[0] = argv[-1]; /* need this space */ | |
53 | break; | |
54 | } else if (strcmp("-d", argv[0])==0) { | |
55 | dbg = 1; | |
56 | } | |
569c4905 SL |
57 | else if (strcmp("-l", argv[0])==0) { |
58 | ldbg = 1; | |
59 | } | |
90a429fa KM |
60 | else if(strcmp("-S", argv[0]) == 0) { |
61 | svflg = 1; | |
62 | } | |
63 | else if(strncmp("-R", argv[0], 2) == 0) { | |
64 | if(thaw(argv[0] + 2) == 0) | |
65 | rstflg = 1; | |
66 | else { | |
67 | fprintf(stderr, "not restored\n"); | |
68 | exit(1); | |
69 | } | |
70 | } | |
71 | } | |
72 | if (argc <= 1) { | |
73 | argv[0][0] = '-'; | |
74 | argv[0][1] = '\0'; | |
75 | argc++; | |
76 | argv--; | |
77 | } | |
78 | svargc = --argc; | |
79 | svargv = ++argv; | |
80 | dprintf("svargc=%d svargv[0]=%s\n", svargc, svargv[0], NULL); | |
81 | *FILENAME = *svargv; /* initial file name */ | |
82 | if(rstflg == 0) | |
83 | yyparse(); | |
84 | dprintf("errorflag=%d\n", errorflag, NULL, NULL); | |
85 | if (errorflag) | |
86 | exit(errorflag); | |
87 | if(svflg) { | |
88 | svflg = 0; | |
89 | if(freeze("awk.out") != 0) | |
90 | fprintf(stderr, "not saved\n"); | |
91 | exit(0); | |
92 | } | |
93 | run(); | |
94 | exit(errorflag); | |
95 | } | |
96 | ||
90a429fa KM |
97 | yywrap() |
98 | { | |
99 | return(1); | |
100 | } |