mkfn.c

   1 /*
   2  * mktrfn - produce troff font descriptions
   3  *
   4  * Copyright (C) 2012-2014 Ali Gholami Rudi <ali at rudi dot ir>
   5  *
   6  * This program is released under the Modified BSD license.
   7  */
   8 #include <ctype.h>
   9 #include <fcntl.h>
  10 #include <stdio.h>
  11 #include <string.h>
  12 #include <stdlib.h>
  13 #include <unistd.h>
  14 #include "trfn.h"
  15
  16 #define TOKLEN          256
  17
  18 static char *trfn_scripts;      /* filtered scripts */
  19 static char *trfn_langs;        /* filtered languages */
  20
  21 static char *afm_charfield(char *s, char *d)
  22 {
  23         while (*s && !isspace(*s) && *s != ';')
  24                 *d++ = *s++;
  25         while (isspace(*s) || *s == ';')
  26                 s++;
  27         *d = '\0';
  28         return s;
  29 }
  30
  31 static int afm_read(void)
  32 {
  33         char ln[1024];
  34         char ch[TOKLEN] = "", pos[TOKLEN] = "";
  35         char c1[TOKLEN] = "", c2[TOKLEN] = "";
  36         char wid[TOKLEN] = "", field[TOKLEN] = "";
  37         char llx[TOKLEN] = "0", lly[TOKLEN] = "0";
  38         char urx[TOKLEN] = "0", ury[TOKLEN] = "0";
  39         char *s;
  40         while (fgets(ln, sizeof(ln), stdin)) {
  41                 if (ln[0] == '#')
  42                         continue;
  43                 if (!strncmp("FontName ", ln, 8)) {
  44                         sscanf(ln, "FontName %s", ch);
  45                         trfn_psfont(ch);
  46                         continue;
  47                 }
  48                 if (!strncmp("StartCharMetrics", ln, 16))
  49                         break;
  50         }
  51         while (fgets(ln, sizeof(ln), stdin)) {
  52                 if (ln[0] == '#')
  53                         continue;
  54                 if (!strncmp("EndCharMetrics", ln, 14))
  55                         break;
  56                 s = ln;
  57                 while (*s) {
  58                         s = afm_charfield(s, field);
  59                         if (!strcmp("C", field)) {
  60                                 s = afm_charfield(s, pos);
  61                                 continue;
  62                         }
  63                         if (!strcmp("WX", field)) {
  64                                 s = afm_charfield(s, wid);
  65                                 continue;
  66                         }
  67                         if (!strcmp("N", field)) {
  68                                 s = afm_charfield(s, ch);
  69                                 continue;
  70                         }
  71                         if (!strcmp("B", field)) {
  72                                 s = afm_charfield(s, llx);
  73                                 s = afm_charfield(s, lly);
  74                                 s = afm_charfield(s, urx);
  75                                 s = afm_charfield(s, ury);
  76                                 continue;
  77                         }
  78                         if (!strcmp("L", field)) {
  79                                 s = afm_charfield(s, c1);
  80                                 s = afm_charfield(s, c2);
  81                                 continue;
  82                         }
  83                         break;
  84                 }
  85                 if (ch[0] && pos[0] && wid[0])
  86                         trfn_char(ch, atoi(pos), 0, atoi(wid),
  87                                 atoi(llx), atoi(lly), atoi(urx), atoi(ury));
  88         }
  89         while (fgets(ln, sizeof(ln), stdin)) {
  90                 if (ln[0] == '#')
  91                         continue;
  92                 if (!strncmp("StartKernPairs", ln, 14))
  93                         break;
  94         }
  95         while (fgets(ln, sizeof(ln), stdin)) {
  96                 if (ln[0] == '#')
  97                         continue;
  98                 if (!strncmp("EndKernPairs", ln, 12))
  99                         break;
 100                 if (sscanf(ln, "KPX %s %s %s", c1, c2, wid) == 3)
 101                         trfn_kern(c1, c2, atoi(wid));
 102         }
 103         return 0;
 104 }
 105
 106 /* return 1 if script script is to be included */
 107 int trfn_script(char *script, int nscripts)
 108 {
 109         if (!trfn_scripts)
 110                 return nscripts == 1 || !script ||
 111                         !strcmp("DFLT", script) || !strcmp("latn", script);
 112         if (!strcmp("help", trfn_scripts))
 113                 fprintf(stderr, "script: %s\n", script ? script : "");
 114         if (strchr(script, ' '))
 115                 *strchr(script, ' ') = '\0';
 116         return !!strstr(trfn_scripts, script);
 117 }
 118
 119 /* return 1 if language lang is to be included */
 120 int trfn_lang(char *lang, int nlangs)
 121 {
 122         if (!trfn_langs)
 123                 return nlangs == 1 || !lang;
 124         if (!lang)
 125                 lang = "";
 126         if (!strcmp("help", trfn_langs))
 127                 fprintf(stderr, "lang: %s\n", lang);
 128         if (strchr(lang, ' '))
 129                 *strchr(lang, ' ') = '\0';
 130         return !!strstr(trfn_langs, lang);
 131 }
 132
 133 int otf_read(void);
 134 void otf_feat(int res, int kmin, int warn);
 135
 136 static char *usage =
 137         "Usage: mktrfn [options] <input >output\n"
 138         "Options:\n"
 139         "  -a      \tread an AFM file (default)\n"
 140         "  -o      \tread an OTF file\n"
 141         "  -s      \tspecial font\n"
 142         "  -p name \toverride font postscript name\n"
 143         "  -t name \tset font troff name\n"
 144         "  -r res  \tset device resolution (720)\n"
 145         "  -k kmin \tspecify the minimum amount of kerning (0)\n"
 146         "  -b      \tinclude glyph bounding boxes\n"
 147         "  -S scrs \tcomma-separated list of scripts to include (help to list)\n"
 148         "  -L langs\tcomma-separated list of languages to include (help to list)\n"
 149         "  -w      \twarn about unsupported font features\n";
 150
 151 int main(int argc, char *argv[])
 152 {
 153         int afm = 1;
 154         int res = 720;
 155         int spc = 0;
 156         int kmin = 0;
 157         int bbox = 0;
 158         int warn = 0;
 159         int i;
 160         for (i = 1; i < argc && argv[i][0] == '-'; i++) {
 161                 switch (argv[i][1]) {
 162                 case 'a':
 163                         afm = 1;
 164                         break;
 165                 case 'b':
 166                         bbox = 1;
 167                         break;
 168                 case 'k':
 169                         kmin = atoi(argv[i][2] ? argv[i] + 2 : argv[++i]);
 170                         break;
 171                 case 'L':
 172                         trfn_langs = argv[i][2] ? argv[i] + 2 : argv[++i];
 173                         break;
 174                 case 'o':
 175                         afm = 0;
 176                         break;
 177                 case 'p':
 178                         trfn_psfont(argv[i][2] ? argv[i] + 2 : argv[++i]);
 179                         break;
 180                 case 'r':
 181                         res = atoi(argv[i][2] ? argv[i] + 2 : argv[++i]);
 182                         break;
 183                 case 's':
 184                         spc = 1;
 185                         break;
 186                 case 'S':
 187                         trfn_scripts = argv[i][2] ? argv[i] + 2 : argv[++i];
 188                         break;
 189                 case 't':
 190                         trfn_trfont(argv[i][2] ? argv[i] + 2 : argv[++i]);
 191                         break;
 192                 case 'w':
 193                         warn = 1;
 194                         break;
 195                 default:
 196                         printf("%s", usage);
 197                         return 0;
 198                 }
 199         }
 200         trfn_init(res, spc, kmin, bbox);
 201         if (afm)
 202                 afm_read();
 203         else
 204                 otf_read();
 205         trfn_print();
 206         if (!afm)
 207                 otf_feat(res, kmin, warn);
 208         trfn_done();
 209         return 0;
 210 }