1: /*
   2:  *  makextdev - make an extended character code table for the ditroff
   3:  *		interpress converter.
   4:  *
   5:  * Copyright (c) 1984, 1985 Xerox Corp.
   6:  *
   7:  *  History:
   8:  *	24-oct-85  ed flint	close fontfiles, ran out of open file
   9:  *				descriptors with large number of fonts
  10:  *
  11:  *  Some of the characters in the interpress fonts have character codes
  12:  *  greater than 255.  Since the ditroff character code table is an array of
  13:  *  char, the codes are too large.  This attempts to remedy that situation.
  14:  *  If the character code specified in the normal code table is 0377 (decimal
  15:  *  255), then the real code can be found in the extended table (which is an
  16:  *  array of short).  This program reads the same files that makedev reads and
  17:  *  build the extended code table.
  18:  *
  19:  *  To specify an extended code in a font table, use a line of the following
  20:  *  form:
  21:  *
  22:  *	    c       www     kk      0377    xxxxx
  23:  *
  24:  *  where:  c is the one or two letter character code,
  25:  *	    www is the character's width,
  26:  *	    kk is the kerning information, and
  27:  *	    xxxxx is the actual interpress code for the character.
  28:  *
  29:  *  Basically, this is just like any other line in the font table file, except
  30:  *  that the standard code is set to 0377 and the actual code is placed on the
  31:  *  line as the fifth item.  Note that a file with lines like this can still
  32:  *  be run thru makedev successfully -- makedev will just ignore the fifth
  33:  *  item on the line.
  34:  *
  35:  *  One can make the extended tables for all the loaded fonts by saying
  36:  *  "makextdev DESC" (just as with makedev), but makedev must be run before
  37:  *  doing this, since it will require looking at DESC.out.
  38:  */
  39: 
  40: # include "deviceinfo.h"
  41: # include <stdio.h>
  42: 
  43: # define    Line_length 256
  44: 
  45: # define    Max_chars   256 /* maximum # of funny chars */
  46: /* Tab_size includes all ascii characters except control characters */
  47: # define    Table_size  (Max_chars + 128 - 32)
  48: 
  49: # define    white(ch)   ((ch) == ' ' || (ch) == '\t' || (ch) == '\n')
  50: 
  51: /* values returned by strcmp */
  52: # define    Equal   0
  53: 
  54: char    char_name[5 * Max_chars];
  55: short   char_index_table[Max_chars];
  56: 
  57: unsigned char   font_index_table[Table_size];
  58: unsigned short  extend_table[Table_size];
  59: struct device_entry device_entry;
  60: 
  61: main(argc, argv)
  62: 
  63: int  argc;
  64: char *argv[];
  65: 
  66: {
  67:     int i;
  68:     int fntcnt;
  69:     int descfd;
  70:     register char *ptr;
  71:     char line[Line_length];
  72:     char keyword[80];
  73:     char *fname;
  74:     FILE *descfile;
  75: 
  76:     if (argc < 2)
  77:     {
  78:     fprintf(stderr, "usage: makextdev font\n");
  79:     exit(1);
  80:     }
  81: 
  82:     /* First off, get the DESC.out file -- we need the information */
  83:     if ((descfd = open("DESC.out", 0)) == -1)
  84:     {
  85:     perror("DESC.out");
  86:     fprintf(stderr, "makextdev: please run \"makedev DESC\" first!\n");
  87:     exit(1);
  88:     }
  89: 
  90:     /* read struct device_entry off the front */
  91:     read(descfd, &device_entry, sizeof(device_entry));
  92: 
  93:     /* skip over the point size table */
  94:     lseek(descfd, (device_entry.num_sizes + 1) * sizeof(short), 1);
  95: 
  96:     /* read char_index_table and char_name arrays */
  97:     read(descfd, char_index_table, device_entry.spec_char_num * sizeof(short));
  98:     read(descfd, char_name, device_entry.spec_name_len);
  99:     for (i=0; i<device_entry.spec_char_num; i++)
 100:     {
 101:     fprintf(stderr, "%d  ", char_index_table[i]);
 102:     }
 103:     fputc('\n', stderr);
 104:     for (i=0; i<device_entry.spec_char_num; i++)
 105:     {
 106:     if (char_name[i] == '\0')
 107:     {
 108:         fputc(' ', stderr);
 109:     }
 110:     else
 111:     {
 112:         fputc(char_name[i], stderr);
 113:     }
 114:     }
 115:     fputc('\n', stderr);
 116: 
 117:     /* step thru the arguments */
 118:     while (--argc > 0)
 119:     {
 120:     fname = *++argv;
 121: 
 122:     if (strcmp(fname, "DESC") == Equal)
 123:     {
 124:         /* do all the preloaded fonts */
 125:         if ((descfile = fopen(fname, "r")) == NULL)
 126:         {
 127:         perror(fname);
 128:         exit(1);
 129:         }
 130: 
 131:         /* scan thru DESC looking for the "fonts" keyword */
 132:         do
 133:         {
 134:         if (fgets(line, Line_length, descfile) == NULL)
 135:         {
 136:             fprintf(stderr, "makextdev: no fonts listed in DESC\n");
 137:             exit(1);
 138:         }
 139:         sscanf(line, "%s", keyword);
 140:         } while (strcmp(keyword, "fonts") != Equal);
 141: 
 142:         /* found the line -- do each font listed on the line */
 143:         /* line looks like this:  fonts n X X X X ... 	 */
 144:         /* where n is number of fonts and X is a font name   */
 145:         fclose(descfile);
 146:         ptr = line + 5; /* 5 == strlen("fonts") */
 147:         while (white(*ptr))
 148:         {
 149:         ptr++;      /* never trust a macro */
 150:         }
 151: 
 152:         /* get font count */
 153:         fntcnt = atoi(ptr);
 154:         while (!white(*ptr))
 155:         {
 156:         ptr++;
 157:         }
 158:         while (white(*ptr))
 159:         {
 160:         ptr++;
 161:         }
 162: 
 163:         /* process each font on the line */
 164:         while (fntcnt-- > 0)
 165:         {
 166:         register char *fontname;
 167: 
 168:         fontname = ptr;
 169:         while (!white(*ptr))
 170:         {
 171:             ptr++;
 172:         }
 173:         *ptr++ = '\0';
 174:         dofont(fontname);
 175:         while (white(*ptr))
 176:         {
 177:             ptr++;
 178:         }
 179:         }
 180:     }
 181:     else
 182:     {
 183:         dofont(fname);
 184:     }
 185:     }
 186: }
 187: 
 188: dofont(fontname)
 189: 
 190: char *fontname;
 191: 
 192: {
 193:     int outfile;
 194:     int i;
 195:     int ccode;
 196:     unsigned int xcode;
 197:     char outname[20];
 198:     char ch[10];
 199:     char swid[10];
 200:     char skern[10];
 201:     char scode[10];
 202:     char sauxcode[10];
 203:     char line[Line_length];
 204:     char keyword[20];
 205:     FILE *fontfile;
 206:     struct font_entry font_entry;
 207: 
 208:     /* open the file that describes the font */
 209:     if ((fontfile = fopen(fontname, "r")) == NULL)
 210:     {
 211:     perror(fontname);
 212:     exit(1);
 213:     }
 214: 
 215:     /* find the keyword "charset" */
 216:     do
 217:     {
 218:     if (fgets(line, Line_length, fontfile) == NULL)
 219:     {
 220:         fprintf(stderr, "makextdev: font %s has no charset\n", fontname);
 221:         exit(1);
 222:     }
 223:     sscanf(line, "%s", keyword);
 224:     } while (strcmp(keyword, "charset") != Equal);
 225: 
 226:     /* get font info from *.out file */
 227:     /* first, open it		     */
 228:     strcpy(outname, fontname);
 229:     strcat(outname, ".out");
 230:     if ((outfile = open(outname, 0)) == -1)
 231:     {
 232:     perror(outname);
 233:     fprintf(stderr, "makextdev: please run \"makedev %s\" first!\n",
 234:         fontname);
 235:     exit(1);
 236:     }
 237: 
 238:     /* zero extend_table */
 239:     bzero(extend_table, sizeof(extend_table));
 240: 
 241:     /* now read the header and font_index_table */
 242:     read(outfile, &font_entry, sizeof(font_entry));
 243:     lseek(outfile, (unsigned char)(font_entry.num_char_wid) * 3, 1);    /* skip width, kern, and code */
 244:     read(outfile, font_index_table, device_entry.spec_char_num + 128 - 32);
 245:     close(outfile);
 246: 
 247:     /* unscramble each line */
 248:     while (fgets(line, Line_length, fontfile) != NULL)
 249:     {
 250:     i = sscanf(line, "%s %s %s %s %s", ch, swid, skern, scode, sauxcode);
 251: 
 252:     if (swid[0] != '"')
 253:     {
 254:         /* translate scode and auxcode into actual numerical values */
 255:         ccode = convcode(scode);
 256:         xcode = convcode(sauxcode);
 257:     }
 258:     else
 259:     {
 260:         /* it's a repeat of the last character */
 261:         i = 5;
 262:     }
 263: 
 264:     /* check for extended code */
 265:     if (ccode == 0377)
 266:     {
 267:         if (i < 5)
 268:         {
 269:         fprintf(stderr, "%s: character %s has no extended code\n",
 270:             fontname, ch);
 271:         }
 272:         else
 273:         {
 274:         /* find the findex and store the extended code in extend_table */
 275:         if (strlen(ch) == 1)
 276:         {
 277: /*		    fprintf(stderr, "font_index_table[%d] = %d\n",
 278: 			ch[0] - 32, font_index_table[ch[0] - 32]);
 279: */          extend_table[font_index_table[ch[0] - 32]] = xcode;
 280:         }
 281:         else
 282:         {
 283:             /* it's a funny name */
 284:             for (i = 0; i < device_entry.spec_char_num; i++)
 285:             {
 286:             if (strcmp(&char_name[char_index_table[i]], ch) == Equal)
 287:             {
 288: /*			    fprintf(stderr, "i = %d, font_index_table[%d] = %d\n",
 289: 				i, i+128-32, font_index_table[i+128-32]);
 290: */
 291:                 extend_table[font_index_table[i + 128-32]] = xcode;
 292:                 break;
 293:             }
 294:             }
 295:         }
 296:         }
 297:     }
 298:     }
 299: 
 300:     /* Now, write extend_table in an appropriate file */
 301:     /* remember: outname currently looks like "XX.out" */
 302:     strcat(outname, ".ext");
 303:     if ((outfile = creat(outname, 0666)) == -1)
 304:     {
 305:     perror(outname);
 306:     exit(1);
 307:     }
 308:     write(outfile, extend_table, (device_entry.spec_char_num + 128-32) * sizeof(short));
 309:     close(outfile);
 310:     fclose(fontfile);
 311: }
 312: 
 313: convcode(str)
 314: 
 315: char *str;
 316: 
 317: {
 318:     int val;
 319: 
 320:     if (str[0] == '0')
 321:     {
 322:     sscanf(str, "%o", &val);
 323:     }
 324:     else
 325:     {
 326:     val = atoi(str);
 327:     }
 328: 
 329:     return(val);
 330: }

Defined functions

convcode defined in line 313; used 2 times
dofont defined in line 188; used 2 times
main defined in line 61; never used

Defined variables

char_index_table defined in line 55; used 3 times
char_name defined in line 54; used 4 times
device_entry defined in line 59; used 10 times
extend_table defined in line 58; used 5 times
font_index_table defined in line 57; used 3 times

Defined macros

Equal defined in line 52; used 4 times
Line_length defined in line 43; used 5 times
Max_chars defined in line 45; used 3 times
Table_size defined in line 47; used 2 times
white defined in line 49; used 5 times
Last modified: 1986-01-25
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