projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 2a70a0a1 BB |
1 | #include <stdio.h> |
| 2 | # | |
| 3 | #include "def.h" | |
| 4 | int errflag; | |
| 5 | FILE *infd; | |
| 6 | ||
| 7 | ||
| 8 | int intcase=1, arbcase=0; | |
| 9 | int exitsize=0; /* max number of nodes to be left in loop without iterating */ | |
| 10 | int maxnode=400; /* max number of nodes */ | |
| 11 | int maxhash=347; /* prime number = size of hash table */ | |
| 12 | int progress=0; /* if not 0, print line number every n lines, n = progress */ | |
| 13 | int labinit=10; /* labels generated starting with labinit */ | |
| 14 | int labinc=10; /* labels increase by labinc */ | |
| 15 | int inputform=0; /* = 0 if freeform input, 1 if standard form input */ | |
| 16 | int debug=0; | |
| 17 | int levbrk=1; /* true implies multilevel breaks; false implies single-level breaks only */ | |
| 18 | int levnxt=1; /* true implies multilevel nexts; false implies single-level nexts only */ | |
| 19 | ||
| 20 | ||
| 21 | int maxprogsw=12; /* number of program switches which can be set */ | |
| 22 | char *progsw[] = {"i", "a", | |
| 23 | "e", "m", | |
| 24 | "h", "p", | |
| 25 | "t", "c", | |
| 26 | "s", "d", | |
| 27 | "b", "n" | |
| 28 | }; | |
| 29 | ||
| 30 | ||
| 31 | int *swval[] = {&intcase, &arbcase, | |
| 32 | &exitsize, &maxnode, | |
| 33 | &maxhash, &progress, | |
| 34 | &labinit, &labinc, | |
| 35 | &inputform, &debug, | |
| 36 | &levbrk, &levnxt | |
| 37 | }; | |
| 38 | ||
| 39 | ||
| 40 | char *getargs(argc, argv) | |
| 41 | int argc; char *argv[]; | |
| 42 | { | |
| 43 | int n, infile; | |
| 44 | infile = 0; | |
| 45 | ||
| 46 | for (n = 1; n < argc; ++n) | |
| 47 | { | |
| 48 | if (argv[n][0] == '-') | |
| 49 | setsw(&argv[n][1]); | |
| 50 | else | |
| 51 | { | |
| 52 | if (infile != 0) | |
| 53 | error("multiple input files - using first one: ", argv[infile],""); | |
| 54 | else | |
| 55 | infile = n; | |
| 56 | } | |
| 57 | } | |
| 58 | if (errflag) | |
| 59 | exit(1); | |
| 60 | if (!infile) faterr("no input file","",""); | |
| 61 | infd = fopen(argv[infile],"r"); | |
| 62 | if (infd == NULL) | |
| 63 | faterr("can't open input file:",argv[infile],""); | |
| 64 | return; | |
| 65 | } | |
| 66 | ||
| 67 | setsw(str) | |
| 68 | char *str; | |
| 69 | { | |
| 70 | int i, val, swnum; | |
| 71 | #define maxtemp 15 | |
| 72 | char temp[maxtemp]; | |
| 73 | for (i = 0; 'a' <= str[i] && str[i] <= 'z'; ++i) | |
| 74 | { | |
| 75 | if (i >= maxtemp) | |
| 76 | { | |
| 77 | error("invalid switch:",str,""); | |
| 78 | errflag = 1; | |
| 79 | } | |
| 80 | temp[i] = str[i]; | |
| 81 | } | |
| 82 | temp[i] = '\0'; | |
| 83 | ||
| 84 | swnum = find(temp,progsw,maxprogsw); | |
| 85 | if (swnum == -1) | |
| 86 | { | |
| 87 | error("invalid switch:", str,""); | |
| 88 | errflag = 1; | |
| 89 | return; | |
| 90 | } | |
| 91 | if (str[i] == '\0') | |
| 92 | *(swval[swnum]) = !*(swval[swnum]); | |
| 93 | else | |
| 94 | { | |
| 95 | sscanf(&str[i],"%d",&val); | |
| 96 | *(swval[swnum]) = val; | |
| 97 | } | |
| 98 | } |