gnu/usr.bin/groff/etc/addftinfo.c

   1 // -*- C++ -*-
   2 /* Copyright (C) 1989, 1990 Free Software Foundation, Inc.
   3      Written by James Clark (jjc@jclark.uucp)
   4
   5 This file is part of groff.
   6
   7 groff is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 1, or (at your option) any later
  10 version.
  11
  12 groff is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License along
  18 with groff; see the file LICENSE.  If not, write to the Free Software
  19 Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
  20
  21 #include <stdio.h>
  22 #include <ctype.h>
  23 #include <string.h>
  24 #include <assert.h>
  25 #include <stdlib.h>
  26 #include "lib.h"
  27 #include "errarg.h"
  28 #include "error.h"
  29 #include "stringclass.h"
  30 #include "cset.h"
  31 #include "guess.h"
  32
  33 static void usage();
  34 static void convert_font(const font_params &, FILE *, FILE *);
  35
  36 typedef font_params::*param_t;
  37
  38 static struct {
  39   const char *name;
  40   param_t par;
  41 } param_table[] = {
  42   "x-height", &font_params::x_height,
  43   "fig-height", &font_params::fig_height,
  44   "asc-height", &font_params::asc_height,
  45   "body-height", &font_params::body_height,
  46   "cap-height", &font_params::cap_height,
  47   "comma-depth", &font_params::comma_depth,
  48   "desc-depth", &font_params::desc_depth,
  49   "body-depth", &font_params::body_depth,
  50 };
  51
  52 // These are all in thousandths of an em.
  53 // These values are correct for PostScript Times Roman.
  54
  55 #define DEFAULT_X_HEIGHT 448
  56 #define DEFAULT_FIG_HEIGHT 676
  57 #define DEFAULT_ASC_HEIGHT 682
  58 #define DEFAULT_BODY_HEIGHT 676
  59 #define DEFAULT_CAP_HEIGHT 662
  60 #define DEFAULT_COMMA_DEPTH 143
  61 #define DEFAULT_DESC_DEPTH 217
  62 #define DEFAULT_BODY_DEPTH 177
  63
  64 int main(int argc, char **argv)
  65 {
  66   program_name = argv[0];
  67   if (argc < 4)
  68     usage();
  69   int resolution;
  70   if (sscanf(argv[argc-3], "%d", &resolution) != 1)
  71     usage();
  72   if (resolution <= 0)
  73     fatal("resolution must be > 0");
  74   int unitwidth;
  75   if (sscanf(argv[argc-2], "%d", &unitwidth) != 1)
  76     usage();
  77   if (unitwidth <= 0)
  78     fatal("unitwidth must be > 0");
  79   font_params param;
  80   const char *font = argv[argc-1];
  81   param.italic = (font[0] != '\0' && strchr(font, '\0')[-1] == 'I');
  82   param.em = (resolution*unitwidth)/72;
  83   param.x_height = DEFAULT_X_HEIGHT;
  84   param.fig_height = DEFAULT_FIG_HEIGHT;
  85   param.asc_height = DEFAULT_ASC_HEIGHT;
  86   param.body_height = DEFAULT_BODY_HEIGHT;
  87   param.cap_height = DEFAULT_CAP_HEIGHT;
  88   param.comma_depth = DEFAULT_COMMA_DEPTH;
  89   param.desc_depth = DEFAULT_DESC_DEPTH;
  90   param.body_depth = DEFAULT_BODY_DEPTH;
  91   for (int i = 1; i < argc && argv[i][0] == '-'; i++) {
  92     if (argv[i][1] == '-' && argv[i][2] == '\0') {
  93       i++;
  94       break;
  95     }
  96     if (i + 1 >= argc)
  97       usage();
  98     for (int j = 0;; j++) {
  99       if (j >= sizeof(param_table)/sizeof(param_table[0]))
 100         fatal("parameter `%1' not recognized", argv[i] + 1);
 101       if (strcmp(param_table[j].name, argv[i] + 1) == 0)
 102         break;
 103     }
 104     if (sscanf(argv[i+1], "%d", &(param.*(param_table[j].par))) != 1)
 105       fatal("invalid argument `%1'", argv[i+1]);
 106     i++;
 107   }
 108   if (argc - i != 3)
 109     usage();
 110   FILE *infp = fopen(font, "r");
 111   if (infp == 0)
 112     fatal("can't open `%1': %2", font, strerror(errno));
 113   convert_font(param, infp, stdout);
 114   exit(0);
 115 }
 116
 117 static void usage()
 118 {
 119   fprintf(stderr, "usage: %s [-param value] ... resolution unitwidth font\n",
 120           program_name);
 121   exit(1);
 122 }
 123
 124 static int get_line(FILE *fp, string *p)
 125 {
 126   int c;
 127   p->clear();
 128   while ((c = getc(fp)) != EOF) {
 129     *p += char(c);
 130     if (c == '\n')
 131       break;
 132   }
 133   return p->length() > 0;
 134 }
 135
 136 static void convert_font(const font_params &param, FILE *infp, FILE *outfp)
 137 {
 138   string s;
 139   while (get_line(infp, &s)) {
 140     put_string(s, outfp);
 141     if (s.length() >= 8
 142         && strncmp(&s[0], "charset", 7))
 143       break;
 144   }
 145   while (get_line(infp, &s)) {
 146     s += '\0';
 147     string name;
 148     const char *p = s.contents();
 149     while (csspace(*p))
 150       p++;
 151     while (*p != '\0' && !csspace(*p))
 152       name += *p++;
 153     while (csspace(*p))
 154       p++;
 155     for (const char *q = s.contents(); q < p; q++)
 156       putc(*q, outfp);
 157     char *next;
 158     char_metric metric;
 159     metric.width = (int)strtol(p, &next, 10);
 160     if (next != p) {
 161       printf("%d", metric.width);
 162       p = next;
 163       metric.type = (int)strtol(p, &next, 10);
 164       if (next != p) {
 165         name += '\0';
 166         guess(name.contents(), param, &metric);
 167         if (metric.sk == 0) {
 168           if (metric.left_ic == 0) {
 169             if (metric.ic == 0) {
 170               if (metric.depth == 0) {
 171                 if (metric.height != 0)
 172                   printf(",%d", metric.height);
 173               }
 174               else
 175                 printf(",%d,%d", metric.height, metric.depth);
 176             }
 177             else
 178               printf(",%d,%d,%d", metric.height, metric.depth, metric.ic);
 179           }
 180           else
 181             printf(",%d,%d,%d,%d", metric.height, metric.depth, metric.ic,
 182                    metric.left_ic);
 183         }
 184         else
 185           printf(",%d,%d,%d,%d,%d", metric.height, metric.depth, metric.ic,
 186                  metric.left_ic, metric.sk);
 187       }
 188     }
 189     fputs(p, outfp);
 190   }
 191 }
 192