projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| b803c326 SL |
1 | #ifndef lint |
| 2 | static char sccsid[] = "@(#)main.c 4.2 %G%"; | |
| 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; | |
| 12 | int svflg = 0; | |
| 13 | int rstflg = 0; | |
| 14 | int svargc; | |
| 15 | char **svargv, **xargv; | |
| 16 | extern FILE *yyin; /* lex input file */ | |
| 17 | char *lexprog; /* points to program argument if it exists */ | |
| 18 | extern errorflag; /* non-zero if any syntax errors; set by yyerror */ | |
| 19 | ||
| 20 | int filefd, symnum, ansfd; | |
| 21 | char *filelist; | |
| 22 | extern int maxsym, errno; | |
| 23 | main(argc, argv) int argc; char *argv[]; { | |
| 24 | if (argc == 1) | |
| 25 | error(FATAL, "Usage: awk [-f source | 'cmds'] [files]"); | |
| 26 | if (strcmp(argv[0], "a.out")) | |
| 27 | logit(argc, argv); | |
| 28 | syminit(); | |
| 29 | while (argc > 1) { | |
| 30 | argc--; | |
| 31 | argv++; | |
| 32 | /* this nonsense is because gcos argument handling */ | |
| 33 | /* folds -F into -f. accordingly, one checks the next | |
| 34 | /* character after f to see if it's -f file or -Fx. | |
| 35 | */ | |
| 36 | if (argv[0][0] == '-' && TOLOWER(argv[0][1]) == 'f' && argv[0][2] == '\0') { | |
| 37 | yyin = fopen(argv[1], "r"); | |
| 38 | if (yyin == NULL) | |
| 39 | error(FATAL, "can't open %s", argv[1]); | |
| 40 | argc--; | |
| 41 | argv++; | |
| 42 | break; | |
| 43 | } else if (argv[0][0] == '-' && TOLOWER(argv[0][1]) == 'f') { /* set field sep */ | |
| 44 | if (argv[0][2] == 't') /* special case for tab */ | |
| 45 | **FS = '\t'; | |
| 46 | else | |
| 47 | **FS = argv[0][2]; | |
| 48 | continue; | |
| 49 | } else if (argv[0][0] != '-') { | |
| 50 | dprintf("cmds=|%s|\n", argv[0], NULL, NULL); | |
| 51 | yyin = NULL; | |
| 52 | lexprog = argv[0]; | |
| 53 | argv[0] = argv[-1]; /* need this space */ | |
| 54 | break; | |
| 55 | } else if (strcmp("-d", argv[0])==0) { | |
| 56 | dbg = 1; | |
| 57 | } | |
| 58 | else if(strcmp("-S", argv[0]) == 0) { | |
| 59 | svflg = 1; | |
| 60 | } | |
| 61 | else if(strncmp("-R", argv[0], 2) == 0) { | |
| 62 | if(thaw(argv[0] + 2) == 0) | |
| 63 | rstflg = 1; | |
| 64 | else { | |
| 65 | fprintf(stderr, "not restored\n"); | |
| 66 | exit(1); | |
| 67 | } | |
| 68 | } | |
| 69 | } | |
| 70 | if (argc <= 1) { | |
| 71 | argv[0][0] = '-'; | |
| 72 | argv[0][1] = '\0'; | |
| 73 | argc++; | |
| 74 | argv--; | |
| 75 | } | |
| 76 | svargc = --argc; | |
| 77 | svargv = ++argv; | |
| 78 | dprintf("svargc=%d svargv[0]=%s\n", svargc, svargv[0], NULL); | |
| 79 | *FILENAME = *svargv; /* initial file name */ | |
| 80 | if(rstflg == 0) | |
| 81 | yyparse(); | |
| 82 | dprintf("errorflag=%d\n", errorflag, NULL, NULL); | |
| 83 | if (errorflag) | |
| 84 | exit(errorflag); | |
| 85 | if(svflg) { | |
| 86 | svflg = 0; | |
| 87 | if(freeze("awk.out") != 0) | |
| 88 | fprintf(stderr, "not saved\n"); | |
| 89 | exit(0); | |
| 90 | } | |
| 91 | run(); | |
| 92 | exit(errorflag); | |
| 93 | } | |
| 94 | ||
| 95 | logit(n, s) char *s[]; | |
| 96 | { int i, tvec[2]; | |
| 97 | FILE *f, *g; | |
| 98 | char buf[512]; | |
| 99 | if ((f=fopen("/crp/pjw/awkhist/awkhist", "a"))==NULL) | |
| 100 | return; | |
| 101 | time(tvec); | |
| 102 | fprintf(f, "%-8s %s", getlogin(), ctime(tvec)); | |
| 103 | for (i=0; i<n; i++) | |
| 104 | fprintf(f, "'%s'", s[i]); | |
| 105 | putc('\n', f); | |
| 106 | if (strcmp(s[1], "-f")) { | |
| 107 | fclose(f); | |
| 108 | return; | |
| 109 | } | |
| 110 | if ((g=fopen(s[2], "r"))==NULL) { | |
| 111 | fclose(f); | |
| 112 | return; | |
| 113 | } | |
| 114 | while ((i=fread(buf, 1, 512, g))>0) | |
| 115 | fwrite(buf, 1, i, f); | |
| 116 | fclose(f); | |
| 117 | fclose(g); | |
| 118 | } | |
| 119 | ||
| 120 | yywrap() | |
| 121 | { | |
| 122 | return(1); | |
| 123 | } |