| 1 | #include <stdio.h> |
| 2 | |
| 3 | float deltx; |
| 4 | float delty; |
| 5 | |
| 6 | main(argc,argv) char **argv; { |
| 7 | int std=1; |
| 8 | FILE *fin; |
| 9 | |
| 10 | while(argc-- > 1) { |
| 11 | if(*argv[1] == '-') |
| 12 | switch(argv[1][1]) { |
| 13 | case 'l': |
| 14 | deltx = atoi(&argv[1][2]) - 1; |
| 15 | break; |
| 16 | case 'w': |
| 17 | delty = atoi(&argv[1][2]) - 1; |
| 18 | break; |
| 19 | } |
| 20 | |
| 21 | else { |
| 22 | std = 0; |
| 23 | if ((fin = fopen(argv[1], "r")) == NULL) { |
| 24 | fprintf(stderr, "can't open %s\n", argv[1]); |
| 25 | exit(1); |
| 26 | } |
| 27 | fplt(fin); |
| 28 | } |
| 29 | argv++; |
| 30 | } |
| 31 | if (std) |
| 32 | fplt( stdin ); |
| 33 | exit(0); |
| 34 | } |
| 35 | |
| 36 | |
| 37 | fplt(fin) FILE *fin; { |
| 38 | int c; |
| 39 | char s[256]; |
| 40 | int xi,yi,x0,y0,x1,y1,r,dx,n,i; |
| 41 | int pat[256]; |
| 42 | |
| 43 | openpl(); |
| 44 | while((c=getc(fin)) != EOF){ |
| 45 | switch(c){ |
| 46 | case 'm': |
| 47 | xi = getsi(fin); |
| 48 | yi = getsi(fin); |
| 49 | move(xi,yi); |
| 50 | break; |
| 51 | case 'l': |
| 52 | x0 = getsi(fin); |
| 53 | y0 = getsi(fin); |
| 54 | x1 = getsi(fin); |
| 55 | y1 = getsi(fin); |
| 56 | line(x0,y0,x1,y1); |
| 57 | break; |
| 58 | case 't': |
| 59 | gets(s,fin); |
| 60 | label(s); |
| 61 | break; |
| 62 | case 'e': |
| 63 | erase(); |
| 64 | break; |
| 65 | case 'p': |
| 66 | xi = getsi(fin); |
| 67 | yi = getsi(fin); |
| 68 | point(xi,yi); |
| 69 | break; |
| 70 | case 'n': |
| 71 | xi = getsi(fin); |
| 72 | yi = getsi(fin); |
| 73 | cont(xi,yi); |
| 74 | break; |
| 75 | case 's': |
| 76 | x0 = getsi(fin); |
| 77 | y0 = getsi(fin); |
| 78 | x1 = getsi(fin); |
| 79 | y1 = getsi(fin); |
| 80 | space(x0,y0,x1,y1); |
| 81 | break; |
| 82 | case 'a': |
| 83 | xi = getsi(fin); |
| 84 | yi = getsi(fin); |
| 85 | x0 = getsi(fin); |
| 86 | y0 = getsi(fin); |
| 87 | x1 = getsi(fin); |
| 88 | y1 = getsi(fin); |
| 89 | arc(xi,yi,x0,y0,x1,y1); |
| 90 | break; |
| 91 | case 'c': |
| 92 | xi = getsi(fin); |
| 93 | yi = getsi(fin); |
| 94 | r = getsi(fin); |
| 95 | circle(xi,yi,r); |
| 96 | break; |
| 97 | case 'f': |
| 98 | gets(s,fin); |
| 99 | linemod(s); |
| 100 | break; |
| 101 | case 'd': |
| 102 | xi = getsi(fin); |
| 103 | yi = getsi(fin); |
| 104 | dx = getsi(fin); |
| 105 | n = getsi(fin); |
| 106 | for(i=0; i<n; i++)pat[i] = getsi(fin); |
| 107 | dot(xi,yi,dx,n,pat); |
| 108 | break; |
| 109 | } |
| 110 | } |
| 111 | closepl(); |
| 112 | } |
| 113 | getsi(fin) FILE *fin; { /* get an integer stored in 2 ascii bytes. */ |
| 114 | short a, b; |
| 115 | if((b = getc(fin)) == EOF) |
| 116 | return(EOF); |
| 117 | if((a = getc(fin)) == EOF) |
| 118 | return(EOF); |
| 119 | a = a<<8; |
| 120 | return(a|b); |
| 121 | } |
| 122 | gets(s,fin) char *s; FILE *fin; { |
| 123 | for( ; *s = getc(fin); s++) |
| 124 | if(*s == '\n') |
| 125 | break; |
| 126 | *s = '\0'; |
| 127 | return; |
| 128 | } |