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; |
54 | |
55 | fi = snew(font_info); |
56 | fi->name = NULL; |
57 | fi->nglyphs = 0; |
58 | fi->glyphs = NULL; |
59 | fi->widths = NULL; |
60 | fi->kerns = newtree234(kern_cmp); |
61 | in->pos.line = 0; |
62 | line = afm_read_line(in); |
63 | if (!line || !afm_require_key(line, "StartFontMetrics", in)) |
64 | goto giveup; |
65 | if (!(val = strtok(NULL, " \t"))) { |
66 | error(err_afmval, in->pos, "StartFontMetrics", 1); |
67 | goto giveup; |
68 | } |
69 | if (atof(val) >= 5.0) { |
70 | error(err_afmvers, &in->pos); |
71 | goto giveup; |
72 | } |
73 | sfree(line); |
74 | for (;;) { |
75 | line = afm_read_line(in); |
76 | if (line == NULL) |
77 | goto giveup; |
78 | key = strtok(line, " \t"); |
79 | if (strcmp(key, "EndFontMetrics") == 0) { |
80 | fi->next = all_fonts; |
81 | all_fonts = fi; |
82 | fclose(in->currfp); |
83 | return; |
84 | } else if (strcmp(key, "FontName") == 0) { |
85 | if (!(val = strtok(NULL, " \t"))) { |
86 | error(err_afmval, &in->pos, key, 1); |
87 | goto giveup; |
88 | } |
89 | fi->name = dupstr(val); |
90 | } else if (strcmp(key, "StartCharMetrics") == 0) { |
91 | char const **glyphs; |
92 | int *widths; |
93 | int i; |
94 | if (!(val = strtok(NULL, " \t"))) { |
95 | error(err_afmval, &in->pos, key, 1); |
96 | goto giveup; |
97 | } |
98 | fi->nglyphs = atoi(val); |
99 | sfree(line); |
100 | glyphs = snewn(fi->nglyphs, char const *); |
101 | widths = snewn(fi->nglyphs, int); |
102 | for (i = 0; i < fi->nglyphs; i++) { |
103 | glyphs[i] = NULL; |
104 | line = afm_read_line(in); |
105 | if (line == NULL) |
106 | goto giveup; |
107 | key = strtok(line, " \t"); |
108 | while (key != NULL) { |
109 | if (strcmp(key, "WX") == 0 || strcmp(key, "W0X") == 0) { |
110 | if (!(val = strtok(NULL, " \t")) || |
111 | !strcmp(val, ";")) { |
112 | error(err_afmval, &in->pos, key, 1); |
113 | goto giveup; |
114 | } |
115 | widths[i] = atoi(val); |
116 | } else if (strcmp(key, "N") == 0) { |
117 | if (!(val = strtok(NULL, " \t")) || |
118 | !strcmp(val, ";")) { |
119 | error(err_afmval, &in->pos, key, 1); |
120 | goto giveup; |
121 | } |
122 | glyphs[i] = dupstr(val); |
123 | } |
124 | do { |
125 | key = strtok(NULL, " \t"); |
126 | } while (key && strcmp(key, ";")); |
127 | key = strtok(NULL, " \t"); |
128 | } |
129 | sfree(line); |
130 | } |
131 | line = afm_read_line(in); |
132 | if (!line || !afm_require_key(line, "EndCharMetrics", in)) |
133 | goto giveup; |
134 | sfree(line); |
135 | fi->glyphs = glyphs; |
136 | fi->widths = widths; |
137 | |
138 | for (i = 0; i < fi->nglyphs; i++) { |
139 | wchar_t ucs; |
140 | ucs = ps_glyph_to_unicode(fi->glyphs[i]); |
141 | if (ucs < 0xFFFF) |
142 | fi->bmp[ucs] = i; |
143 | } |
144 | font_index_glyphs(fi); |
145 | } else if (strcmp(key, "StartKernPairs") == 0 || |
146 | strcmp(key, "StartKernPairs0") == 0) { |
147 | int nkerns, i; |
148 | kern_pair *kerns; |
149 | if (!(val = strtok(NULL, " \t"))) { |
150 | error(err_afmval, &in->pos, key, 1); |
151 | goto giveup; |
152 | } |
153 | nkerns = atoi(val); |
154 | sfree(line); |
155 | kerns = snewn(nkerns, kern_pair); |
156 | for (i = 0; i < nkerns; i++) { |
157 | line = afm_read_line(in); |
158 | if (line == NULL) |
159 | goto giveup; |
160 | key = strtok(line, " \t"); |
161 | if (strcmp(key, "KPX") == 0) { |
162 | char *nl, *nr; |
163 | int l, r; |
164 | kern_pair *kp; |
165 | nl = strtok(NULL, " \t"); |
166 | nr = strtok(NULL, " \t"); |
167 | val = strtok(NULL, " \t"); |
168 | if (!val) { |
169 | error(err_afmval, &in->pos, key, 3); |
170 | goto giveup; |
171 | } |
172 | l = find_glyph(fi, nl); |
173 | r = find_glyph(fi, nr); |
174 | if (l == -1 || r == -1) continue; |
175 | kp = snew(kern_pair); |
176 | kp->left = l; |
177 | kp->right = r; |
178 | kp->kern = atoi(val); |
179 | add234(fi->kerns, kp); |
180 | } |
181 | } |
182 | line = afm_read_line(in); |
183 | if (!line || !afm_require_key(line, "EndKernPairs", in)) |
184 | goto giveup; |
185 | sfree(line); |
186 | } |
187 | } |
188 | giveup: |
189 | sfree(fi); |
190 | fclose(in->currfp); |
191 | return; |
192 | } |