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; |
58 | fi->nglyphs = 0; |
59 | fi->glyphs = NULL; |
60 | fi->widths = NULL; |
44407fea |
61 | fi->fp = NULL; |
ba0fe3ec |
62 | fi->kerns = newtree234(kern_cmp); |
255b7ff3 |
63 | fi->fontbbox[0] = fi->fontbbox[1] = fi->fontbbox[2] = fi->fontbbox[3] = 0; |
64 | fi->capheight = fi->xheight = fi->ascent = fi->descent = 0; |
65 | fi->stemh = fi->stemv = fi->italicangle = 0; |
50926836 |
66 | for (i = 0; i < lenof(fi->bmp); i++) |
67 | fi->bmp[i] = 0xFFFF; |
ba0fe3ec |
68 | in->pos.line = 0; |
69 | line = afm_read_line(in); |
70 | if (!line || !afm_require_key(line, "StartFontMetrics", in)) |
71 | goto giveup; |
72 | if (!(val = strtok(NULL, " \t"))) { |
73 | error(err_afmval, in->pos, "StartFontMetrics", 1); |
74 | goto giveup; |
75 | } |
76 | if (atof(val) >= 5.0) { |
77 | error(err_afmvers, &in->pos); |
78 | goto giveup; |
79 | } |
80 | sfree(line); |
81 | for (;;) { |
82 | line = afm_read_line(in); |
83 | if (line == NULL) |
84 | goto giveup; |
85 | key = strtok(line, " \t"); |
86 | if (strcmp(key, "EndFontMetrics") == 0) { |
87 | fi->next = all_fonts; |
88 | all_fonts = fi; |
89 | fclose(in->currfp); |
90 | return; |
91 | } else if (strcmp(key, "FontName") == 0) { |
92 | if (!(val = strtok(NULL, " \t"))) { |
93 | error(err_afmval, &in->pos, key, 1); |
94 | goto giveup; |
95 | } |
96 | fi->name = dupstr(val); |
255b7ff3 |
97 | } else if (strcmp(key, "FontBBox") == 0) { |
98 | int i; |
99 | for (i = 0; i < 3; i++) { |
100 | if (!(val = strtok(NULL, " \t"))) { |
101 | error(err_afmval, &in->pos, key, 4); |
102 | goto giveup; |
103 | } |
104 | fi->fontbbox[i] = atof(val); |
105 | } |
106 | } else if (strcmp(key, "CapHeight") == 0) { |
107 | if (!(val = strtok(NULL, " \t"))) { |
108 | error(err_afmval, &in->pos, key, 1); |
109 | goto giveup; |
110 | } |
111 | fi->capheight = atof(val); |
112 | } else if (strcmp(key, "XHeight") == 0) { |
113 | if (!(val = strtok(NULL, " \t"))) { |
114 | error(err_afmval, &in->pos, key, 1); |
115 | goto giveup; |
116 | } |
117 | fi->xheight = atof(val); |
118 | } else if (strcmp(key, "Ascender") == 0) { |
119 | if (!(val = strtok(NULL, " \t"))) { |
120 | error(err_afmval, &in->pos, key, 1); |
121 | goto giveup; |
122 | } |
123 | fi->ascent = atof(val); |
124 | } else if (strcmp(key, "Descender") == 0) { |
125 | if (!(val = strtok(NULL, " \t"))) { |
126 | error(err_afmval, &in->pos, key, 1); |
127 | goto giveup; |
128 | } |
129 | fi->descent = atof(val); |
130 | } else if (strcmp(key, "CapHeight") == 0) { |
131 | if (!(val = strtok(NULL, " \t"))) { |
132 | error(err_afmval, &in->pos, key, 1); |
133 | goto giveup; |
134 | } |
135 | fi->capheight = atof(val); |
136 | } else if (strcmp(key, "StdHW") == 0) { |
137 | if (!(val = strtok(NULL, " \t"))) { |
138 | error(err_afmval, &in->pos, key, 1); |
139 | goto giveup; |
140 | } |
141 | fi->stemh = atof(val); |
142 | } else if (strcmp(key, "StdVW") == 0) { |
143 | if (!(val = strtok(NULL, " \t"))) { |
144 | error(err_afmval, &in->pos, key, 1); |
145 | goto giveup; |
146 | } |
147 | fi->stemv = atof(val); |
148 | } else if (strcmp(key, "ItalicAngle") == 0) { |
149 | if (!(val = strtok(NULL, " \t"))) { |
150 | error(err_afmval, &in->pos, key, 1); |
151 | goto giveup; |
152 | } |
153 | fi->italicangle = atof(val); |
ba0fe3ec |
154 | } else if (strcmp(key, "StartCharMetrics") == 0) { |
155 | char const **glyphs; |
156 | int *widths; |
157 | int i; |
158 | if (!(val = strtok(NULL, " \t"))) { |
159 | error(err_afmval, &in->pos, key, 1); |
160 | goto giveup; |
161 | } |
162 | fi->nglyphs = atoi(val); |
163 | sfree(line); |
164 | glyphs = snewn(fi->nglyphs, char const *); |
165 | widths = snewn(fi->nglyphs, int); |
166 | for (i = 0; i < fi->nglyphs; i++) { |
167 | glyphs[i] = NULL; |
168 | line = afm_read_line(in); |
169 | if (line == NULL) |
170 | goto giveup; |
171 | key = strtok(line, " \t"); |
172 | while (key != NULL) { |
173 | if (strcmp(key, "WX") == 0 || strcmp(key, "W0X") == 0) { |
174 | if (!(val = strtok(NULL, " \t")) || |
175 | !strcmp(val, ";")) { |
176 | error(err_afmval, &in->pos, key, 1); |
177 | goto giveup; |
178 | } |
179 | widths[i] = atoi(val); |
180 | } else if (strcmp(key, "N") == 0) { |
181 | if (!(val = strtok(NULL, " \t")) || |
182 | !strcmp(val, ";")) { |
183 | error(err_afmval, &in->pos, key, 1); |
184 | goto giveup; |
185 | } |
186 | glyphs[i] = dupstr(val); |
187 | } |
188 | do { |
189 | key = strtok(NULL, " \t"); |
190 | } while (key && strcmp(key, ";")); |
191 | key = strtok(NULL, " \t"); |
192 | } |
193 | sfree(line); |
194 | } |
195 | line = afm_read_line(in); |
196 | if (!line || !afm_require_key(line, "EndCharMetrics", in)) |
197 | goto giveup; |
198 | sfree(line); |
199 | fi->glyphs = glyphs; |
200 | fi->widths = widths; |
201 | |
202 | for (i = 0; i < fi->nglyphs; i++) { |
203 | wchar_t ucs; |
204 | ucs = ps_glyph_to_unicode(fi->glyphs[i]); |
205 | if (ucs < 0xFFFF) |
206 | fi->bmp[ucs] = i; |
207 | } |
208 | font_index_glyphs(fi); |
209 | } else if (strcmp(key, "StartKernPairs") == 0 || |
210 | strcmp(key, "StartKernPairs0") == 0) { |
211 | int nkerns, i; |
212 | kern_pair *kerns; |
213 | if (!(val = strtok(NULL, " \t"))) { |
214 | error(err_afmval, &in->pos, key, 1); |
215 | goto giveup; |
216 | } |
217 | nkerns = atoi(val); |
218 | sfree(line); |
219 | kerns = snewn(nkerns, kern_pair); |
220 | for (i = 0; i < nkerns; i++) { |
221 | line = afm_read_line(in); |
222 | if (line == NULL) |
223 | goto giveup; |
224 | key = strtok(line, " \t"); |
225 | if (strcmp(key, "KPX") == 0) { |
226 | char *nl, *nr; |
227 | int l, r; |
228 | kern_pair *kp; |
229 | nl = strtok(NULL, " \t"); |
230 | nr = strtok(NULL, " \t"); |
231 | val = strtok(NULL, " \t"); |
232 | if (!val) { |
233 | error(err_afmval, &in->pos, key, 3); |
234 | goto giveup; |
235 | } |
236 | l = find_glyph(fi, nl); |
237 | r = find_glyph(fi, nr); |
238 | if (l == -1 || r == -1) continue; |
239 | kp = snew(kern_pair); |
240 | kp->left = l; |
241 | kp->right = r; |
242 | kp->kern = atoi(val); |
243 | add234(fi->kerns, kp); |
244 | } |
245 | } |
246 | line = afm_read_line(in); |
247 | if (!line || !afm_require_key(line, "EndKernPairs", in)) |
248 | goto giveup; |
249 | sfree(line); |
250 | } |
251 | } |
252 | giveup: |
253 | sfree(fi); |
254 | fclose(in->currfp); |
255 | return; |
256 | } |