dev.c

   1 /* output device */
   2 #include <ctype.h>
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <string.h>
   6 #include "roff.h"
   7
   8 static char dev_dir[PATHLEN];   /* device directory */
   9 static char dev_dev[PATHLEN];   /* output device name */
  10 int dev_res;                    /* device resolution */
  11 int dev_uwid;                   /* device unitwidth */
  12 int dev_hor;                    /* minimum horizontal movement */
  13 int dev_ver;                    /* minimum vertical movement */
  14
  15 /* mounted fonts */
  16 static char fn_name[NFONTS][FNLEN];     /* font names */
  17 static struct font *fn_font[NFONTS];    /* font structs */
  18 static int fn_n;                        /* number of device fonts */
  19
  20 /* .fspecial request */
  21 static char fspecial_fn[NFONTS][FNLEN]; /* .fspecial first arguments */
  22 static char fspecial_sp[NFONTS][FNLEN]; /* .fspecial special fonts */
  23 static int fspecial_n;                  /* number of fonts in fspecial_sp[] */
  24
  25 static void skipline(FILE* filp)
  26 {
  27         int c;
  28         do {
  29                 c = getc(filp);
  30         } while (c != '\n' && c != EOF);
  31 }
  32
  33 static void dev_prologue(void)
  34 {
  35         out("x T %s\n", dev_dev);
  36         out("x res %d %d %d\n", dev_res, dev_hor, dev_ver);
  37         out("x init\n");
  38 }
  39
  40 int dev_mnt(int pos, char *id, char *name)
  41 {
  42         char path[PATHLEN];
  43         struct font *fn;
  44         if (pos >= NFONTS)
  45                 return -1;
  46         if (strchr(name, '/'))
  47                 strcpy(path, name);
  48         else
  49                 sprintf(path, "%s/dev%s/%s", dev_dir, dev_dev, name);
  50         fn = font_open(path);
  51         if (!fn)
  52                 return -1;
  53         if (fn_font[pos])
  54                 font_close(fn_font[pos]);
  55         if (fn_name[pos] != name)       /* ignore if fn_name[pos] is passed */
  56                 strcpy(fn_name[pos], id);
  57         fn_font[pos] = fn;
  58         out("x font %d %s\n", pos, name);
  59         return pos;
  60 }
  61
  62 int dev_open(char *dir, char *dev)
  63 {
  64         char path[PATHLEN];
  65         char tok[ILNLEN];
  66         int i;
  67         FILE *desc;
  68         strcpy(dev_dir, dir);
  69         strcpy(dev_dev, dev);
  70         sprintf(path, "%s/dev%s/DESC", dir, dev);
  71         desc = fopen(path, "r");
  72         if (!desc)
  73                 return 1;
  74         while (fscanf(desc, "%s", tok) == 1) {
  75                 if (tok[0] == '#') {
  76                         skipline(desc);
  77                         continue;
  78                 }
  79                 if (!strcmp("fonts", tok)) {
  80                         fscanf(desc, "%d", &fn_n);
  81                         for (i = 0; i < fn_n; i++)
  82                                 fscanf(desc, "%s", fn_name[i + 1]);
  83                         fn_n++;
  84                         continue;
  85                 }
  86                 if (!strcmp("sizes", tok)) {
  87                         while (fscanf(desc, "%s", tok) == 1)
  88                                 if (!strcmp("0", tok))
  89                                         break;
  90                         continue;
  91                 }
  92                 if (!strcmp("res", tok)) {
  93                         fscanf(desc, "%d", &dev_res);
  94                         continue;
  95                 }
  96                 if (!strcmp("unitwidth", tok)) {
  97                         fscanf(desc, "%d", &dev_uwid);
  98                         continue;
  99                 }
 100                 if (!strcmp("hor", tok)) {
 101                         fscanf(desc, "%d", &dev_hor);
 102                         continue;
 103                 }
 104                 if (!strcmp("ver", tok)) {
 105                         fscanf(desc, "%d", &dev_ver);
 106                         continue;
 107                 }
 108                 if (!strcmp("charset", tok))
 109                         break;
 110                 skipline(desc);
 111         }
 112         fclose(desc);
 113         dev_prologue();
 114         for (i = 0; i < fn_n; i++)
 115                 if (*fn_name[i])
 116                         dev_mnt(i, fn_name[i], fn_name[i]);
 117         return 0;
 118 }
 119
 120 static void dev_epilogue(void)
 121 {
 122         out("x trailer\n");
 123         out("x stop\n");
 124 }
 125
 126 void dev_close(void)
 127 {
 128         int i;
 129         dev_epilogue();
 130         for (i = 0; i < NFONTS; i++) {
 131                 if (fn_font[i])
 132                         font_close(fn_font[i]);
 133                 fn_font[i] = NULL;
 134         }
 135 }
 136
 137 /* glyph handling functions */
 138
 139 static struct glyph *dev_find(char *c, int fn, int byid)
 140 {
 141         struct glyph *(*find)(struct font *fn, char *name);
 142         struct glyph *g;
 143         int i;
 144         find = byid ? font_glyph : font_find;
 145         if ((g = find(fn_font[fn], c)))
 146                 return g;
 147         for (i = 0; i < fspecial_n; i++)
 148                 if (dev_pos(fspecial_fn[i]) == fn && dev_pos(fspecial_sp[i]) >= 0)
 149                         if ((g = find(dev_font(dev_pos(fspecial_sp[i])), c)))
 150                                 return g;
 151         for (i = 0; i < NFONTS; i++)
 152                 if (fn_font[i] && font_special(fn_font[i]))
 153                         if ((g = find(fn_font[i], c)))
 154                                 return g;
 155         return NULL;
 156 }
 157
 158 struct glyph *dev_glyph(char *c, int fn)
 159 {
 160         if ((c[0] == c_ec || c[0] == c_ni) && c[1] == c_ec)
 161                 c++;
 162         if (c[0] == c_ec && c[1] == '(')
 163                 c += 2;
 164         c = cmap_map(c);
 165         if (!strncmp("GID=", c, 4))
 166                 return dev_find(c + 4, fn, 1);
 167         return dev_find(c, fn, 0);
 168 }
 169
 170 /* return the mounted position of a font */
 171 int dev_pos(char *id)
 172 {
 173         int i;
 174         if (isdigit(id[0])) {
 175                 int num = atoi(id);
 176                 if (num < 0 || num >= NFONTS || !fn_font[num]) {
 177                         errmsg("bad font position\n");
 178                         return -1;
 179                 }
 180                 return num;
 181         }
 182         for (i = 1; i < NFONTS; i++)
 183                 if (!strcmp(fn_name[i], id))
 184                         return i;
 185         if (!strcmp(fn_name[0], id))
 186                 return 0;
 187         return dev_mnt(0, id, id);
 188 }
 189
 190 /* return the mounted position of a font struct */
 191 int dev_fontpos(struct font *fn)
 192 {
 193         int i;
 194         for (i = 0; i < NFONTS; i++)
 195                 if (fn_font[i] == fn)
 196                         return i;
 197         return 0;
 198 }
 199
 200 /* return the font struct at pos */
 201 struct font *dev_font(int pos)
 202 {
 203         return pos >= 0 && pos < NFONTS ? fn_font[pos] : NULL;
 204 }
 205
 206 void tr_fspecial(char **args)
 207 {
 208         char *fn = args[1];
 209         int i;
 210         if (!fn) {
 211                 fspecial_n = 0;
 212                 return;
 213         }
 214         for (i = 2; i < NARGS; i++) {
 215                 if (args[i] && fspecial_n < LEN(fspecial_fn)) {
 216                         strcpy(fspecial_fn[fspecial_n], fn);
 217                         strcpy(fspecial_sp[fspecial_n], args[i]);
 218                         fspecial_n++;
 219                 }
 220         }
 221 }