ba0fe3ec |
1 | #include <stdio.h> |
2 | #include <stdlib.h> |
3 | #include "halibut.h" |
4 | #include "paper.h" |
5 | |
6 | char *afm_read_line(input *in) { |
7 | int i, len = 256; |
8 | int c; |
9 | char *line; |
10 | |
11 | do { |
12 | i = 0; |
13 | in->pos.line++; |
14 | c = getc(in->currfp); |
15 | if (c == EOF) { |
16 | error(err_afmeof, &in->pos); |
17 | return NULL; |
18 | } |
19 | line = snewn(len, char); |
20 | while (c != EOF && c != '\r' && c != '\n') { |
21 | if (i >= len - 1) { |
22 | len += 256; |
23 | line = sresize(line, len, char); |
24 | } |
25 | line[i++] = c; |
26 | c = getc(in->currfp); |
27 | } |
28 | if (c == '\r') { |
29 | /* Cope with CRLF terminated lines */ |
30 | c = getc(in->currfp); |
31 | if (c != '\n' && c != EOF) |
32 | ungetc(c, in->currfp); |
33 | } |
34 | line[i] = 0; |
35 | } while (line[(strspn(line, " \t"))] == 0 || |
36 | strncmp(line, "Comment ", 8) == 0 || |
37 | strncmp(line, "Comment\t", 8) == 0); |
38 | |
39 | return line; |
40 | } |
41 | |
42 | static int afm_require_key(char *line, char const *expected, input *in) { |
43 | char *key = strtok(line, " \t"); |
44 | |
45 | if (strcmp(key, expected) == 0) |
46 | return TRUE; |
47 | error(err_afmkey, &in->pos, expected); |
48 | return FALSE; |
49 | } |
50 | |
51 | void read_afm_file(input *in) { |
52 | char *line, *key, *val; |
53 | font_info *fi; |
50926836 |
54 | size_t i; |
ba0fe3ec |
55 | |
56 | fi = snew(font_info); |
57 | fi->name = NULL; |
d5bc1c48 |
58 | fi->widths = newtree234(width_cmp); |
3e2dd889 |
59 | fi->fontfile = NULL; |
ba0fe3ec |
60 | fi->kerns = newtree234(kern_cmp); |
b5232689 |
61 | fi->ligs = newtree234(lig_cmp); |
255b7ff3 |
62 | fi->fontbbox[0] = fi->fontbbox[1] = fi->fontbbox[2] = fi->fontbbox[3] = 0; |
63 | fi->capheight = fi->xheight = fi->ascent = fi->descent = 0; |
64 | fi->stemh = fi->stemv = fi->italicangle = 0; |
50926836 |
65 | for (i = 0; i < lenof(fi->bmp); i++) |
66 | fi->bmp[i] = 0xFFFF; |
ba0fe3ec |
67 | in->pos.line = 0; |
68 | line = afm_read_line(in); |
69 | if (!line || !afm_require_key(line, "StartFontMetrics", in)) |
70 | goto giveup; |
71 | if (!(val = strtok(NULL, " \t"))) { |
72 | error(err_afmval, in->pos, "StartFontMetrics", 1); |
73 | goto giveup; |
74 | } |
75 | if (atof(val) >= 5.0) { |
76 | error(err_afmvers, &in->pos); |
77 | goto giveup; |
78 | } |
79 | sfree(line); |
80 | for (;;) { |
81 | line = afm_read_line(in); |
82 | if (line == NULL) |
83 | goto giveup; |
84 | key = strtok(line, " \t"); |
85 | if (strcmp(key, "EndFontMetrics") == 0) { |
86 | fi->next = all_fonts; |
87 | all_fonts = fi; |
88 | fclose(in->currfp); |
89 | return; |
90 | } else if (strcmp(key, "FontName") == 0) { |
91 | if (!(val = strtok(NULL, " \t"))) { |
92 | error(err_afmval, &in->pos, key, 1); |
93 | goto giveup; |
94 | } |
95 | fi->name = dupstr(val); |
255b7ff3 |
96 | } else if (strcmp(key, "FontBBox") == 0) { |
97 | int i; |
98 | for (i = 0; i < 3; i++) { |
99 | if (!(val = strtok(NULL, " \t"))) { |
100 | error(err_afmval, &in->pos, key, 4); |
101 | goto giveup; |
102 | } |
103 | fi->fontbbox[i] = atof(val); |
104 | } |
105 | } else if (strcmp(key, "CapHeight") == 0) { |
106 | if (!(val = strtok(NULL, " \t"))) { |
107 | error(err_afmval, &in->pos, key, 1); |
108 | goto giveup; |
109 | } |
110 | fi->capheight = atof(val); |
111 | } else if (strcmp(key, "XHeight") == 0) { |
112 | if (!(val = strtok(NULL, " \t"))) { |
113 | error(err_afmval, &in->pos, key, 1); |
114 | goto giveup; |
115 | } |
116 | fi->xheight = atof(val); |
117 | } else if (strcmp(key, "Ascender") == 0) { |
118 | if (!(val = strtok(NULL, " \t"))) { |
119 | error(err_afmval, &in->pos, key, 1); |
120 | goto giveup; |
121 | } |
122 | fi->ascent = atof(val); |
123 | } else if (strcmp(key, "Descender") == 0) { |
124 | if (!(val = strtok(NULL, " \t"))) { |
125 | error(err_afmval, &in->pos, key, 1); |
126 | goto giveup; |
127 | } |
128 | fi->descent = atof(val); |
129 | } else if (strcmp(key, "CapHeight") == 0) { |
130 | if (!(val = strtok(NULL, " \t"))) { |
131 | error(err_afmval, &in->pos, key, 1); |
132 | goto giveup; |
133 | } |
134 | fi->capheight = atof(val); |
135 | } else if (strcmp(key, "StdHW") == 0) { |
136 | if (!(val = strtok(NULL, " \t"))) { |
137 | error(err_afmval, &in->pos, key, 1); |
138 | goto giveup; |
139 | } |
140 | fi->stemh = atof(val); |
141 | } else if (strcmp(key, "StdVW") == 0) { |
142 | if (!(val = strtok(NULL, " \t"))) { |
143 | error(err_afmval, &in->pos, key, 1); |
144 | goto giveup; |
145 | } |
146 | fi->stemv = atof(val); |
147 | } else if (strcmp(key, "ItalicAngle") == 0) { |
148 | if (!(val = strtok(NULL, " \t"))) { |
149 | error(err_afmval, &in->pos, key, 1); |
150 | goto giveup; |
151 | } |
152 | fi->italicangle = atof(val); |
ba0fe3ec |
153 | } else if (strcmp(key, "StartCharMetrics") == 0) { |
d5bc1c48 |
154 | int nglyphs, i; |
ba0fe3ec |
155 | if (!(val = strtok(NULL, " \t"))) { |
156 | error(err_afmval, &in->pos, key, 1); |
157 | goto giveup; |
158 | } |
d5bc1c48 |
159 | nglyphs = atoi(val); |
ba0fe3ec |
160 | sfree(line); |
d5bc1c48 |
161 | for (i = 0; i < nglyphs; i++) { |
162 | int width = 0; |
163 | glyph g = NOGLYPH; |
164 | |
ba0fe3ec |
165 | line = afm_read_line(in); |
166 | if (line == NULL) |
167 | goto giveup; |
168 | key = strtok(line, " \t"); |
169 | while (key != NULL) { |
170 | if (strcmp(key, "WX") == 0 || strcmp(key, "W0X") == 0) { |
171 | if (!(val = strtok(NULL, " \t")) || |
172 | !strcmp(val, ";")) { |
173 | error(err_afmval, &in->pos, key, 1); |
174 | goto giveup; |
175 | } |
d5bc1c48 |
176 | width = atoi(val); |
ba0fe3ec |
177 | } else if (strcmp(key, "N") == 0) { |
178 | if (!(val = strtok(NULL, " \t")) || |
179 | !strcmp(val, ";")) { |
180 | error(err_afmval, &in->pos, key, 1); |
181 | goto giveup; |
182 | } |
d5bc1c48 |
183 | g = glyph_intern(val); |
584ae072 |
184 | } else if (strcmp(key, "L") == 0) { |
185 | glyph succ, lig; |
186 | if (!(val = strtok(NULL, " \t")) || |
187 | !strcmp(val, ";")) { |
188 | error(err_afmval, &in->pos, key, 1); |
189 | goto giveup; |
190 | } |
191 | succ = glyph_intern(val); |
192 | if (!(val = strtok(NULL, " \t")) || |
193 | !strcmp(val, ";")) { |
194 | error(err_afmval, &in->pos, key, 1); |
195 | goto giveup; |
196 | } |
197 | lig = glyph_intern(val); |
198 | if (g != NOGLYPH && succ != NOGLYPH && |
199 | lig != NOGLYPH) { |
200 | ligature *l = snew(ligature); |
201 | l->left = g; |
202 | l->right = succ; |
203 | l->lig = lig; |
204 | add234(fi->ligs, l); |
205 | } |
ba0fe3ec |
206 | } |
207 | do { |
208 | key = strtok(NULL, " \t"); |
209 | } while (key && strcmp(key, ";")); |
210 | key = strtok(NULL, " \t"); |
211 | } |
212 | sfree(line); |
d5bc1c48 |
213 | if (width != 0 && g != NOGLYPH) { |
214 | wchar_t ucs; |
215 | glyph_width *w = snew(glyph_width); |
216 | w->glyph = g; |
217 | w->width = width; |
218 | add234(fi->widths, w); |
36e8f0f5 |
219 | ucs = ps_glyph_to_unicode(g); |
d5bc1c48 |
220 | if (ucs < 0xFFFF) |
221 | fi->bmp[ucs] = g; |
222 | } |
ba0fe3ec |
223 | } |
224 | line = afm_read_line(in); |
225 | if (!line || !afm_require_key(line, "EndCharMetrics", in)) |
226 | goto giveup; |
227 | sfree(line); |
ba0fe3ec |
228 | |
ba0fe3ec |
229 | } else if (strcmp(key, "StartKernPairs") == 0 || |
230 | strcmp(key, "StartKernPairs0") == 0) { |
231 | int nkerns, i; |
232 | kern_pair *kerns; |
233 | if (!(val = strtok(NULL, " \t"))) { |
234 | error(err_afmval, &in->pos, key, 1); |
235 | goto giveup; |
236 | } |
237 | nkerns = atoi(val); |
238 | sfree(line); |
239 | kerns = snewn(nkerns, kern_pair); |
240 | for (i = 0; i < nkerns; i++) { |
241 | line = afm_read_line(in); |
242 | if (line == NULL) |
243 | goto giveup; |
244 | key = strtok(line, " \t"); |
245 | if (strcmp(key, "KPX") == 0) { |
246 | char *nl, *nr; |
247 | int l, r; |
248 | kern_pair *kp; |
249 | nl = strtok(NULL, " \t"); |
250 | nr = strtok(NULL, " \t"); |
251 | val = strtok(NULL, " \t"); |
252 | if (!val) { |
253 | error(err_afmval, &in->pos, key, 3); |
254 | goto giveup; |
255 | } |
d5bc1c48 |
256 | l = glyph_intern(nl); |
257 | r = glyph_intern(nr); |
ba0fe3ec |
258 | if (l == -1 || r == -1) continue; |
259 | kp = snew(kern_pair); |
260 | kp->left = l; |
261 | kp->right = r; |
262 | kp->kern = atoi(val); |
263 | add234(fi->kerns, kp); |
264 | } |
265 | } |
266 | line = afm_read_line(in); |
267 | if (!line || !afm_require_key(line, "EndKernPairs", in)) |
268 | goto giveup; |
269 | sfree(line); |
270 | } |
271 | } |
272 | giveup: |
273 | sfree(fi); |
274 | fclose(in->currfp); |
275 | return; |
276 | } |