1 #ifndef lint 2 static char sccsid[] = "@(#)vfontinfo.c 4.3 (Berkeley) 7/16/83"; 3 #endif 4 5 /* Font Information for VCat-style fonts 6 * Andy Hertzfeld 4/79 7 * 8 * Modified to print Ascii chars 1/80 by Mark Horton 9 * Zoom option added 5/81 by Steve Stone with tables from Mark Horton. 10 * Message option added 5/31 by Mark Horton 11 */ 12 #include <stdio.h> 13 #include <ctype.h> 14 #include <vfont.h> 15 16 #ifndef BITDIR 17 #define BITDIR "/usr/lib/vfont" 18 #endif 19 20 struct header FontHeader; 21 struct dispatch disptable[256]; 22 23 char IName[100]; 24 char * rdchar(); 25 long fbase; 26 27 char defascii[256]; 28 char *charswanted = defascii; 29 int verbose; 30 char charbits[4000]; 31 int H, W, WB, base; 32 int zoom = 1; 33 34 char msgout[24][80]; 35 int msgflag = 0; 36 int curline, curcol; /* cursor, numbered from lower left corner */ 37 int minline=24, maxline=0, maxcol=0; 38 39 main(argc,argv) 40 int argc; 41 char **argv; 42 43 { 44 int FID,i,j; 45 46 while (argc > 1 && argv[1][0] == '-') { 47 switch(argv[1][1]) { 48 case 'z': 49 zoom = argv[1][2] - '0'; /* zoom implies verbose */ 50 case 'v': 51 verbose++; 52 break; 53 case 'm': 54 msgflag = 1; 55 zoom = 2; 56 for (i=0; i<24; i++) 57 for (j=0; j<80; j++) 58 msgout[i][j] = ' '; 59 curline = 5; curcol = 0; 60 break; 61 default: 62 printf("Bad flag: %s\n", argv[1]); 63 } 64 argc--; argv++; 65 } 66 if (argc < 2) { 67 fprintf(stderr,"Usage: %s filename", argv[0]); 68 exit(2); 69 } 70 71 for (i=0; i<128; i++) 72 defascii[i] = i; 73 if (argc >= 3) 74 charswanted = argv[2]; 75 76 sprintf(IName, "%s/%s", BITDIR, argv[1]); 77 if ((FID = open(argv[1],0)) < 0) 78 if ((FID = open(IName,0)) < 0) { 79 printf("Can't find %s\n",argv[1]); 80 exit(8); 81 }; 82 83 if (read(FID,&FontHeader,sizeof FontHeader) != sizeof FontHeader) 84 error("Bad header in Font file."); 85 86 if (read(FID,&disptable[0],sizeof disptable) != sizeof disptable) 87 error("Bad dispatch table in Font file"); 88 89 fbase = sizeof FontHeader + sizeof disptable; 90 91 if (FontHeader.magic != 0436) 92 printf("Magic number %o wrong\n", FontHeader.magic); 93 if (!msgflag) { 94 printf("Font %s, ",argv[1]); 95 printf("raster size %d, ",FontHeader.size); 96 printf("max width %d, max height %d, xtend %d\n", 97 FontHeader.maxx, FontHeader.maxy,FontHeader.xtend); 98 printf("\n"); 99 for (i = strlen(argv[1]) + 1; i > 0; --i) 100 printf(" "); 101 printf("ASCII offset size left right up down width \n"); 102 } 103 104 for (i=0; i<256; i++) { 105 j = charswanted[i]; 106 if (i>0 && j==0) 107 break; 108 if (disptable[j].nbytes != 0) { 109 if (!msgflag) 110 printf("%s %3o %2s %4d %4d %4d %4d %4d %4d %5d\n", 111 argv[1], 112 j, rdchar(j), 113 disptable[j].addr, 114 disptable[j].nbytes, 115 disptable[j].left, 116 disptable[j].right, 117 disptable[j].up, 118 disptable[j].down, 119 disptable[j].width); 120 if (verbose || msgflag) { 121 int len = disptable[j].nbytes; 122 int k, l, last; 123 124 lseek(FID, fbase+disptable[j].addr, 0); 125 read(FID, charbits, len); 126 H = (disptable[j].up) + (disptable[j].down); 127 W = (disptable[j].left) + (disptable[j].right); 128 base = disptable[j].up; 129 #ifdef sun 130 WB = ((W+15)/16)*2; 131 #else 132 WB = (W+7)/8; 133 #endif 134 shozoom(); 135 if (msgflag) { 136 k = disptable[j].width; 137 if (zoom == 0) k *= 2; 138 else if (zoom == 2) k /= 2; 139 curcol += k; 140 } 141 } 142 } 143 } 144 if (msgflag) { 145 for (i=maxline; i>=minline; i--) { 146 for (j=0; j<maxcol; j++) 147 putchar(msgout[i][j]); 148 putchar('\n'); 149 } 150 } 151 exit(0); 152 } 153 154 error(string) 155 char *string; 156 157 { 158 printf("\nvfontinfo: %s\n",string); 159 exit(8); 160 }; 161 162 char *rdchar(c) 163 char c; 164 { 165 static char ret[3]; 166 ret[0] = isprint(c) ? ' ' : '^'; 167 ret[1] = isprint(c) ? c : c^0100; 168 ret[2] = 0; 169 return (ret); 170 } 171 172 int 173 fbit(row, col) 174 int row, col; 175 { 176 int thisbyte, thisbit, ret; 177 178 if (row<0 || row>=H || col>=W) return(0); 179 thisbyte = charbits[row*WB + (col>>3)] & 0xff; 180 thisbit = 0x80 >> (col&7); 181 ret = thisbyte & thisbit; 182 return (ret != 0); 183 } 184 185 186 /* 187 The implementation would work like this: 188 zoom level method 189 0 2 chars/pixel, 1 is "[]", 0 is " ". 190 1 2 pixels/char 2x1, using " " "," "'" "|" 191 2 8 pixels/char 4x2, using 16x16 table 192 3 32 pixels/char 8x4, mapped into (2) 193 4 and up similar, mapped into (2) 194 195 The 16x16 table maps a 4x2 pattern into a printing ascii character which 196 most closely approximates that pattern, e.g. the pattern 197 |' 198 '' 199 would be represented by the character "[". I have such a table worked out. 200 201 Grainer zoom levels would take the rule of reducing it into a smaller bitmap, 202 or-ing the bits together. (e.g. level 3 would take a 2x2 chunk and map it 203 into a single pixel: 0 if all 4 are 0, 1 otherwise.) These pixels would be 204 displayed as in 2. 205 */ 206 207 /* 208 * graphtab: a table for rudimentary graphics on ordinary terminals. 209 * For each 4x2 bit pattern of the form: 210 * ae 211 * bf 212 * cg 213 * dh 214 * form the 4 bit quantities abcd and efgh and get table entry 215 * graphtab[abcd][efgh] 216 * to display in that character position. 217 * 218 * General philosophies: the dh bits are intended for descenders where 219 * possible. Characters with radically different appearance on different 220 * terminals (e.g. _ and ^) are avoided. 221 * 222 * Version 1.0, March 1981, Mark Horton. 223 */ 224 225 char tab1[4] = { 226 ' ', ',', '\'', '|' 227 }; 228 229 char graphtab[16][16] = { 230 ' ', '.', '.', ',', '.', ';', ':', 'j', '\'', ':', ':', ';', '\'', ';', '!', '|', 231 '.', '.', ':', ',', ';', ';', ';', 'j', '/', ';', ';', ';', 'j', 'j', 'j', 'j', 232 '.', ',', '~', ',', 'r', '<', 'j', 'q', '/', ';', 'I', ';', '/', '|', 'I', '|', 233 ',', ',', 'r', 'x', '/', '/', '/', 'd', '/', '/', '/', 'd', '/', '/', '/', 'd', 234 '.', ':', '\\', ';', '-', '=', 'v', 'q', '\'', ':', '<', '|', '\'', ':', '+', '+', 235 ';', ';', '>', ';', '=', '=', 'g', 'g', '\'', ':', 'S', 'S', '/', '/', '/', '+', 236 ':', '\\', '\\', '\\', 'r', '<', 'w', 'q', '/', '<', '6', '4', '/', '/', 'd', '+', 237 'l', 'L', '+', 'b', 'y', '[', 'p', 'g', '/', '<', '/', '6', '/', '/', '/', '+', 238 '`', ':', ':', ';', '`', '\\', '\\', '\\', '"', ':', ':', ';', '`', '\\', 'Y', 'T', 239 ';', ';', ';', ';', '`', '2', '>', '\\', ':', '=', ';', ';', '?', '?', ']', ']', 240 ':', ';', ';', ';', '>', '2', '>', '\\', 'F', ';', 'O', ';', '7', '?', ']', '7', 241 ';', ';', ';', ';', '?', '2', '>', 'b', ';', ';', ';', ';', '?', '?', ']', '#', 242 '\'', '\\', '\\', '\\', '`', '\\', '\\', '\\', '\'', '\'', '<', '5', '"', '"', 'v', 'q', 243 ';', '\\', '\\', '\\', '`', '=', '\\', '\\', '\'', '\'', '5', '5', '"', '?', 'g', 'g', 244 'I', 'L', 'L', 'L', 'D', '\\', 'b', 'f', 'F', '[', '[', '[', 'P', '?', '#', 'M', 245 '|', '|', '|', '|', '|', '#', '+', '#', 'T', '[', 'F', 'F', 'P', '?', 'P', 'M' 246 }; 247 248 249 shozoom() 250 { 251 register i; 252 253 if (zoom == 0) 254 sho0(); 255 else if (zoom == 1) 256 sho1(); 257 else if (zoom == 2) 258 sho2(); 259 } 260 261 sho0() 262 { 263 register k,l; 264 265 for (k=0; k<H; k++) { 266 for (l=0; l<W; l++) 267 printf("%s", fbit(k,l)?"[]": " "); 268 printf("\n"); 269 } 270 printf("\n"); 271 } 272 273 sho1() 274 { 275 register k,l; 276 277 k = 0; 278 for (k = 0; k <= H; k += 2) { 279 for(l=0;l<W;l++) putchar(tab1[(fbit(k,l) << 1) | fbit(k+1,l)]); 280 putchar('\n'); 281 } 282 putchar('\n'); 283 } 284 285 sho2() 286 { 287 register i,j,k,l; 288 int line = curline + (base+3)/4; 289 int col; 290 291 k = base%4; 292 if (k > 0) k -= 4; 293 while (k < H) { 294 l = 0; 295 col = curcol; 296 while (l<W) { 297 i = fbit(k,l)*8 + fbit(k+1,l)*4 + 298 fbit(k+2,l)*2 + fbit(k+3,l); 299 l++; 300 j = fbit(k,l)*8 + fbit(k+1,l)*4 + 301 fbit(k+2,l)*2 + fbit(k+3,l); 302 303 if (msgflag) { 304 if (graphtab[i][j] != ' ') { 305 if (line > maxline) maxline = line; 306 if (line < minline) minline = line; 307 if (col > maxcol) maxcol = col; 308 } 309 msgout[line][col] = graphtab[i][j]; 310 } else 311 printf("%c",graphtab[i][j]); 312 l++; 313 col++; 314 } 315 if (msgflag == 0) 316 printf("\n"); 317 k += 4; 318 line--; 319 } 320 if (msgflag == 0) 321 printf("\n"); 322 } 323