Contents of /trunk/mkinitrd-magellan/busybox/console-tools/loadfont.c
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Fri Apr 24 18:33:46 2009 UTC (15 years, 5 months ago) by niro
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Fri Apr 24 18:33:46 2009 UTC (15 years, 5 months ago) by niro
File MIME type: text/plain
File size: 9311 byte(s)
-updated to busybox-1.13.4
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * loadfont.c - Eugene Crosser & Andries Brouwer |
4 | * |
5 | * Version 0.96bb |
6 | * |
7 | * Loads the console font, and possibly the corresponding screen map(s). |
8 | * (Adapted for busybox by Matej Vela.) |
9 | */ |
10 | #include "libbb.h" |
11 | #include <sys/kd.h> |
12 | |
13 | #ifndef KDFONTOP |
14 | #define KDFONTOP 0x4B72 |
15 | struct console_font_op { |
16 | unsigned op; /* KD_FONT_OP_* */ |
17 | unsigned flags; /* KD_FONT_FLAG_* */ |
18 | unsigned width, height; |
19 | unsigned charcount; |
20 | unsigned char *data; /* font data with height fixed to 32 */ |
21 | }; |
22 | |
23 | #define KD_FONT_OP_SET 0 /* Set font */ |
24 | #define KD_FONT_OP_GET 1 /* Get font */ |
25 | #define KD_FONT_OP_SET_DEFAULT 2 /* Set font to default, |
26 | data points to name / NULL */ |
27 | #define KD_FONT_OP_COPY 3 /* Copy from another console */ |
28 | |
29 | #define KD_FONT_FLAG_OLD 0x80000000 /* Invoked via old interface */ |
30 | #define KD_FONT_FLAG_DONT_RECALC 1 /* Don't call adjust_height() */ |
31 | /* (Used internally for PIO_FONT support) */ |
32 | #endif /* KDFONTOP */ |
33 | |
34 | |
35 | enum { |
36 | PSF_MAGIC1 = 0x36, |
37 | PSF_MAGIC2 = 0x04, |
38 | |
39 | PSF_MODE512 = 0x01, |
40 | PSF_MODEHASTAB = 0x02, |
41 | PSF_MAXMODE = 0x03, |
42 | PSF_SEPARATOR = 0xffff |
43 | }; |
44 | |
45 | struct psf_header { |
46 | unsigned char magic1, magic2; /* Magic number */ |
47 | unsigned char mode; /* PSF font mode */ |
48 | unsigned char charsize; /* Character size */ |
49 | }; |
50 | |
51 | #define PSF_MAGIC_OK(x) ((x)->magic1 == PSF_MAGIC1 && (x)->magic2 == PSF_MAGIC2) |
52 | |
53 | static void do_loadfont(int fd, unsigned char *inbuf, int unit, int fontsize) |
54 | { |
55 | char *buf; |
56 | int i; |
57 | |
58 | if (unit < 1 || unit > 32) |
59 | bb_error_msg_and_die("bad character size %d", unit); |
60 | |
61 | buf = xzalloc(16 * 1024); |
62 | for (i = 0; i < fontsize; i++) |
63 | memcpy(buf + (32 * i), inbuf + (unit * i), unit); |
64 | |
65 | { /* KDFONTOP */ |
66 | struct console_font_op cfo; |
67 | |
68 | cfo.op = KD_FONT_OP_SET; |
69 | cfo.flags = 0; |
70 | cfo.width = 8; |
71 | cfo.height = unit; |
72 | cfo.charcount = fontsize; |
73 | cfo.data = (void*)buf; |
74 | #if 0 |
75 | if (!ioctl_or_perror(fd, KDFONTOP, &cfo, "KDFONTOP ioctl failed (will try PIO_FONTX)")) |
76 | goto ret; /* success */ |
77 | #else |
78 | xioctl(fd, KDFONTOP, &cfo); |
79 | #endif |
80 | } |
81 | |
82 | #if 0 |
83 | /* These ones do not honour -C tty (they set font on current tty regardless) |
84 | * On x86, this distinction is visible on framebuffer consoles |
85 | * (regular character consoles may have only one shared font anyway) |
86 | */ |
87 | #if defined(PIO_FONTX) && !defined(__sparc__) |
88 | { |
89 | struct consolefontdesc cfd; |
90 | |
91 | cfd.charcount = fontsize; |
92 | cfd.charheight = unit; |
93 | cfd.chardata = buf; |
94 | |
95 | if (!ioctl_or_perror(fd, PIO_FONTX, &cfd, "PIO_FONTX ioctl failed (will try PIO_FONT)")) |
96 | goto ret; /* success */ |
97 | } |
98 | #endif |
99 | xioctl(fd, PIO_FONT, buf); |
100 | ret: |
101 | #endif /* 0 */ |
102 | free(buf); |
103 | } |
104 | |
105 | static void do_loadtable(int fd, unsigned char *inbuf, int tailsz, int fontsize) |
106 | { |
107 | struct unimapinit advice; |
108 | struct unimapdesc ud; |
109 | struct unipair *up; |
110 | int ct = 0, maxct; |
111 | int glyph; |
112 | uint16_t unicode; |
113 | |
114 | maxct = tailsz; /* more than enough */ |
115 | up = xmalloc(maxct * sizeof(struct unipair)); |
116 | |
117 | for (glyph = 0; glyph < fontsize; glyph++) { |
118 | while (tailsz >= 2) { |
119 | unicode = (((uint16_t) inbuf[1]) << 8) + inbuf[0]; |
120 | tailsz -= 2; |
121 | inbuf += 2; |
122 | if (unicode == PSF_SEPARATOR) |
123 | break; |
124 | up[ct].unicode = unicode; |
125 | up[ct].fontpos = glyph; |
126 | ct++; |
127 | } |
128 | } |
129 | |
130 | /* Note: after PIO_UNIMAPCLR and before PIO_UNIMAP |
131 | this printf did not work on many kernels */ |
132 | |
133 | advice.advised_hashsize = 0; |
134 | advice.advised_hashstep = 0; |
135 | advice.advised_hashlevel = 0; |
136 | xioctl(fd, PIO_UNIMAPCLR, &advice); |
137 | ud.entry_ct = ct; |
138 | ud.entries = up; |
139 | xioctl(fd, PIO_UNIMAP, &ud); |
140 | } |
141 | |
142 | static void do_load(int fd, struct psf_header *psfhdr, size_t len) |
143 | { |
144 | int unit; |
145 | int fontsize; |
146 | int hastable; |
147 | unsigned head0, head = head; |
148 | |
149 | /* test for psf first */ |
150 | if (len >= sizeof(struct psf_header) && PSF_MAGIC_OK(psfhdr)) { |
151 | if (psfhdr->mode > PSF_MAXMODE) |
152 | bb_error_msg_and_die("unsupported psf file mode"); |
153 | fontsize = ((psfhdr->mode & PSF_MODE512) ? 512 : 256); |
154 | #if !defined(PIO_FONTX) || defined(__sparc__) |
155 | if (fontsize != 256) |
156 | bb_error_msg_and_die("only fontsize 256 supported"); |
157 | #endif |
158 | hastable = (psfhdr->mode & PSF_MODEHASTAB); |
159 | unit = psfhdr->charsize; |
160 | head0 = sizeof(struct psf_header); |
161 | |
162 | head = head0 + fontsize * unit; |
163 | if (head > len || (!hastable && head != len)) |
164 | bb_error_msg_and_die("input file: bad length"); |
165 | } else { |
166 | /* file with three code pages? */ |
167 | if (len == 9780) { |
168 | head0 = 40; |
169 | unit = 16; |
170 | } else { |
171 | /* bare font */ |
172 | if (len & 0377) |
173 | bb_error_msg_and_die("input file: bad length"); |
174 | head0 = 0; |
175 | unit = len / 256; |
176 | } |
177 | fontsize = 256; |
178 | hastable = 0; |
179 | } |
180 | |
181 | do_loadfont(fd, (unsigned char *)psfhdr + head0, unit, fontsize); |
182 | if (hastable) |
183 | do_loadtable(fd, (unsigned char *)psfhdr + head, len - head, fontsize); |
184 | } |
185 | |
186 | #if ENABLE_LOADFONT |
187 | int loadfont_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
188 | int loadfont_main(int argc UNUSED_PARAM, char **argv) |
189 | { |
190 | size_t len; |
191 | struct psf_header *psfhdr; |
192 | |
193 | // no arguments allowed! |
194 | opt_complementary = "=0"; |
195 | getopt32(argv, ""); |
196 | |
197 | /* |
198 | * We used to look at the length of the input file |
199 | * with stat(); now that we accept compressed files, |
200 | * just read the entire file. |
201 | */ |
202 | len = 32*1024; // can't be larger |
203 | psfhdr = xmalloc_read(STDIN_FILENO, &len); |
204 | // xmalloc_open_zipped_read_close(filename, &len); |
205 | if (!psfhdr) |
206 | bb_perror_msg_and_die("error reading input font"); |
207 | do_load(get_console_fd_or_die(), psfhdr, len); |
208 | |
209 | return EXIT_SUCCESS; |
210 | } |
211 | #endif |
212 | |
213 | #if ENABLE_SETFONT |
214 | |
215 | /* |
216 | kbd-1.12: |
217 | |
218 | setfont [-O font+umap.orig] [-o font.orig] [-om cmap.orig] |
219 | [-ou umap.orig] [-N] [font.new ...] [-m cmap] [-u umap] [-C console] |
220 | [-hNN] [-v] [-V] |
221 | |
222 | -h NN Override font height |
223 | -o file |
224 | Save previous font in file |
225 | -O file |
226 | Save previous font and Unicode map in file |
227 | -om file |
228 | Store console map in file |
229 | -ou file |
230 | Save previous Unicode map in file |
231 | -m file |
232 | Load console map or Unicode console map from file |
233 | -u file |
234 | Load Unicode table describing the font from file |
235 | Example: |
236 | # cp866 |
237 | 0x00-0x7f idem |
238 | # |
239 | 0x80 U+0410 # CYRILLIC CAPITAL LETTER A |
240 | 0x81 U+0411 # CYRILLIC CAPITAL LETTER BE |
241 | 0x82 U+0412 # CYRILLIC CAPITAL LETTER VE |
242 | -C console |
243 | Set the font for the indicated console |
244 | -v Verbose |
245 | -V Version |
246 | */ |
247 | |
248 | #if ENABLE_FEATURE_SETFONT_TEXTUAL_MAP |
249 | static int ctoi(char *s) |
250 | { |
251 | if (s[0] == '\'' && s[1] != '\0' && s[2] == '\'' && s[3] == '\0') |
252 | return s[1]; |
253 | // U+ means 0x |
254 | if (s[0] == 'U' && s[1] == '+') { |
255 | s[0] = '0'; |
256 | s[1] = 'x'; |
257 | } |
258 | if (!isdigit(s[0])) |
259 | return -1; |
260 | return xstrtoul(s, 0); |
261 | } |
262 | #endif |
263 | |
264 | int setfont_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
265 | int setfont_main(int argc UNUSED_PARAM, char **argv) |
266 | { |
267 | size_t len; |
268 | unsigned opts; |
269 | int fd; |
270 | struct psf_header *psfhdr; |
271 | char *mapfilename; |
272 | const char *tty_name = CURRENT_TTY; |
273 | |
274 | opt_complementary = "=1"; |
275 | opts = getopt32(argv, "m:C:", &mapfilename, &tty_name); |
276 | argv += optind; |
277 | |
278 | fd = xopen(tty_name, O_NONBLOCK); |
279 | |
280 | if (sizeof(CONFIG_DEFAULT_SETFONT_DIR) > 1) { // if not "" |
281 | if (*argv[0] != '/') { |
282 | // goto default fonts location. don't die if doesn't exist |
283 | chdir(CONFIG_DEFAULT_SETFONT_DIR "/consolefonts"); |
284 | } |
285 | } |
286 | // load font |
287 | len = 32*1024; // can't be larger |
288 | psfhdr = xmalloc_open_zipped_read_close(*argv, &len); |
289 | if (!psfhdr) |
290 | bb_simple_perror_msg_and_die(*argv); |
291 | do_load(fd, psfhdr, len); |
292 | |
293 | // load the screen map, if any |
294 | if (opts & 1) { // -m |
295 | unsigned mode = PIO_SCRNMAP; |
296 | void *map; |
297 | |
298 | if (sizeof(CONFIG_DEFAULT_SETFONT_DIR) > 1) { // if not "" |
299 | if (mapfilename[0] != '/') { |
300 | // goto default keymaps location |
301 | chdir(CONFIG_DEFAULT_SETFONT_DIR "/consoletrans"); |
302 | } |
303 | } |
304 | // fetch keymap |
305 | map = xmalloc_open_zipped_read_close(mapfilename, &len); |
306 | if (!map) |
307 | bb_simple_perror_msg_and_die(mapfilename); |
308 | // file size is 256 or 512 bytes? -> assume binary map |
309 | if (len == E_TABSZ || len == 2*E_TABSZ) { |
310 | if (len == 2*E_TABSZ) |
311 | mode = PIO_UNISCRNMAP; |
312 | } |
313 | #if ENABLE_FEATURE_SETFONT_TEXTUAL_MAP |
314 | // assume textual Unicode console maps: |
315 | // 0x00 U+0000 # NULL (NUL) |
316 | // 0x01 U+0001 # START OF HEADING (SOH) |
317 | // 0x02 U+0002 # START OF TEXT (STX) |
318 | // 0x03 U+0003 # END OF TEXT (ETX) |
319 | else { |
320 | int i; |
321 | char *token[2]; |
322 | parser_t *parser; |
323 | |
324 | if (ENABLE_FEATURE_CLEAN_UP) |
325 | free(map); |
326 | map = xmalloc(E_TABSZ * sizeof(unsigned short)); |
327 | |
328 | #define unicodes ((unsigned short *)map) |
329 | // fill vanilla map |
330 | for (i = 0; i < E_TABSZ; i++) |
331 | unicodes[i] = 0xf000 + i; |
332 | |
333 | parser = config_open(mapfilename); |
334 | while (config_read(parser, token, 2, 2, "# \t", PARSE_NORMAL | PARSE_MIN_DIE)) { |
335 | // parse code/value pair |
336 | int a = ctoi(token[0]); |
337 | int b = ctoi(token[1]); |
338 | if (a < 0 || a >= E_TABSZ |
339 | || b < 0 || b > 65535 |
340 | ) { |
341 | bb_error_msg_and_die("map format"); |
342 | } |
343 | // patch map |
344 | unicodes[a] = b; |
345 | // unicode character is met? |
346 | if (b > 255) |
347 | mode = PIO_UNISCRNMAP; |
348 | } |
349 | if (ENABLE_FEATURE_CLEAN_UP) |
350 | config_close(parser); |
351 | |
352 | if (mode != PIO_UNISCRNMAP) { |
353 | #define asciis ((unsigned char *)map) |
354 | for (i = 0; i < E_TABSZ; i++) |
355 | asciis[i] = unicodes[i]; |
356 | #undef asciis |
357 | } |
358 | #undef unicodes |
359 | } |
360 | #endif // ENABLE_FEATURE_SETFONT_TEXTUAL_MAP |
361 | |
362 | // do set screen map |
363 | xioctl(fd, mode, map); |
364 | |
365 | if (ENABLE_FEATURE_CLEAN_UP) |
366 | free(map); |
367 | } |
368 | |
369 | return EXIT_SUCCESS; |
370 | } |
371 | #endif |