1 | /* |
---|
2 | * libcucul Canvas for ultrafast compositing of Unicode letters |
---|
3 | * Copyright (c) 2002-2006 Sam Hocevar <sam@zoy.org> |
---|
4 | * 2006 Jean-Yves Lamoureux <jylam@lnxscene.org> |
---|
5 | * All Rights Reserved |
---|
6 | * |
---|
7 | * $Id: export.c 1191 2006-10-06 10:12:52Z sam $ |
---|
8 | * |
---|
9 | * This library is free software; you can redistribute it and/or |
---|
10 | * modify it under the terms of the Do What The Fuck You Want To |
---|
11 | * Public License, Version 2, as published by Sam Hocevar. See |
---|
12 | * http://sam.zoy.org/wtfpl/COPYING for more details. |
---|
13 | */ |
---|
14 | |
---|
15 | /* |
---|
16 | * This file contains various export functions |
---|
17 | */ |
---|
18 | |
---|
19 | #include "config.h" |
---|
20 | #include "common.h" |
---|
21 | |
---|
22 | #if !defined(__KERNEL__) |
---|
23 | # if defined(HAVE_ERRNO_H) |
---|
24 | # include <errno.h> |
---|
25 | # endif |
---|
26 | # include <stdlib.h> |
---|
27 | # include <stdio.h> |
---|
28 | # include <string.h> |
---|
29 | #endif |
---|
30 | |
---|
31 | #include "cucul.h" |
---|
32 | #include "cucul_internals.h" |
---|
33 | |
---|
34 | static void export_caca(cucul_canvas_t *, cucul_buffer_t *); |
---|
35 | static void export_ansi(cucul_canvas_t *, cucul_buffer_t *); |
---|
36 | static void export_utf8(cucul_canvas_t *, cucul_buffer_t *); |
---|
37 | static void export_html(cucul_canvas_t *, cucul_buffer_t *); |
---|
38 | static void export_html3(cucul_canvas_t *, cucul_buffer_t *); |
---|
39 | static void export_irc(cucul_canvas_t *, cucul_buffer_t *); |
---|
40 | static void export_ps(cucul_canvas_t *, cucul_buffer_t *); |
---|
41 | static void export_svg(cucul_canvas_t *, cucul_buffer_t *); |
---|
42 | static void export_tga(cucul_canvas_t *, cucul_buffer_t *); |
---|
43 | |
---|
44 | /** \brief Export a canvas into a foreign format. |
---|
45 | * |
---|
46 | * This function exports a libcucul canvas into various foreign formats such |
---|
47 | * as ANSI art, HTML, IRC colours, etc. One should use cucul_get_buffer_data() |
---|
48 | * and cucul_get_buffer_size() to access the buffer contents. The allocated |
---|
49 | * data is valid until cucul_free_buffer() is called. |
---|
50 | * |
---|
51 | * Valid values for \c format are: |
---|
52 | * - \c "caca": export native libcaca files. |
---|
53 | * - \c "ansi": export ANSI art (CP437 charset with ANSI colour codes). |
---|
54 | * - \c "html": export an HTML page with CSS information. |
---|
55 | * - \c "html3": export an HTML table that should be compatible with |
---|
56 | * most navigators, including textmode ones. |
---|
57 | * - \c "irc": export UTF-8 text with mIRC colour codes. |
---|
58 | * - \c "ps": export a PostScript document. |
---|
59 | * - \c "svg": export an SVG vector image. |
---|
60 | * - \c "tga": export a TGA image. |
---|
61 | * |
---|
62 | * If an error occurs, NULL is returned and \b errno is set accordingly: |
---|
63 | * - \c EINVAL Invalid format requested. |
---|
64 | * - \c ENOMEM Not enough memory to allocate output buffer. |
---|
65 | * |
---|
66 | * \param cv A libcucul canvas |
---|
67 | * \param format A string describing the requested output format. |
---|
68 | * \return A libcucul buffer, or NULL in case of error. |
---|
69 | */ |
---|
70 | cucul_buffer_t * cucul_export_canvas(cucul_canvas_t *cv, char const *format) |
---|
71 | { |
---|
72 | cucul_buffer_t *ex; |
---|
73 | |
---|
74 | ex = malloc(sizeof(cucul_buffer_t)); |
---|
75 | if(!ex) |
---|
76 | { |
---|
77 | #if defined(HAVE_ERRNO_H) |
---|
78 | errno = ENOMEM; |
---|
79 | #endif |
---|
80 | return NULL; |
---|
81 | } |
---|
82 | |
---|
83 | ex->size = 0; |
---|
84 | ex->data = NULL; |
---|
85 | ex->user_data = 0; |
---|
86 | |
---|
87 | if(!strcasecmp("caca", format)) |
---|
88 | export_caca(cv, ex); |
---|
89 | else if(!strcasecmp("ansi", format)) |
---|
90 | export_ansi(cv, ex); |
---|
91 | else if(!strcasecmp("utf8", format)) |
---|
92 | export_utf8(cv, ex); |
---|
93 | else if(!strcasecmp("html", format)) |
---|
94 | export_html(cv, ex); |
---|
95 | else if(!strcasecmp("html3", format)) |
---|
96 | export_html3(cv, ex); |
---|
97 | else if(!strcasecmp("irc", format)) |
---|
98 | export_irc(cv, ex); |
---|
99 | else if(!strcasecmp("ps", format)) |
---|
100 | export_ps(cv, ex); |
---|
101 | else if(!strcasecmp("svg", format)) |
---|
102 | export_svg(cv, ex); |
---|
103 | else if(!strcasecmp("tga", format)) |
---|
104 | export_tga(cv, ex); |
---|
105 | |
---|
106 | if(ex->size == 0) |
---|
107 | { |
---|
108 | free(ex); |
---|
109 | #if defined(HAVE_ERRNO_H) |
---|
110 | errno = EINVAL; |
---|
111 | #endif |
---|
112 | return NULL; |
---|
113 | } |
---|
114 | |
---|
115 | return ex; |
---|
116 | } |
---|
117 | |
---|
118 | /** \brief Get available export formats |
---|
119 | * |
---|
120 | * Return a list of available export formats. The list is a NULL-terminated |
---|
121 | * array of strings, interleaving a string containing the internal value for |
---|
122 | * the export format, to be used with cucul_export_canvas(), and a string |
---|
123 | * containing the natural language description for that export format. |
---|
124 | * |
---|
125 | * This function never fails. |
---|
126 | * |
---|
127 | * \return An array of strings. |
---|
128 | */ |
---|
129 | char const * const * cucul_get_export_list(void) |
---|
130 | { |
---|
131 | static char const * const list[] = |
---|
132 | { |
---|
133 | "caca", "native libcaca format", |
---|
134 | "ansi", "ANSI", |
---|
135 | "utf8", "UTF-8 with ANSI escape codes", |
---|
136 | "html", "HTML", |
---|
137 | "html3", "backwards-compatible HTML", |
---|
138 | "irc", "IRC with mIRC colours", |
---|
139 | "ps", "PostScript document", |
---|
140 | "svg", "SVG vector image", |
---|
141 | "tga", "TGA image", |
---|
142 | NULL, NULL |
---|
143 | }; |
---|
144 | |
---|
145 | return list; |
---|
146 | } |
---|
147 | |
---|
148 | /* |
---|
149 | * XXX: the following functions are local. |
---|
150 | */ |
---|
151 | |
---|
152 | /* Generate a native libcaca canvas file. */ |
---|
153 | static void export_caca(cucul_canvas_t *cv, cucul_buffer_t *ex) |
---|
154 | { |
---|
155 | uint32_t *attr = cv->attr; |
---|
156 | uint32_t *chars = cv->chars; |
---|
157 | char *cur; |
---|
158 | uint32_t w, h; |
---|
159 | unsigned int n; |
---|
160 | |
---|
161 | /* 16 bytes for the canvas, 8 bytes for each character cell. */ |
---|
162 | ex->size = 16 + 8 * cv->width * cv->height; |
---|
163 | ex->data = malloc(ex->size); |
---|
164 | |
---|
165 | cur = ex->data; |
---|
166 | |
---|
167 | w = cv->width; |
---|
168 | h = cv->height; |
---|
169 | |
---|
170 | cur += sprintf(cur, "CACACANV%c%c%c%c%c%c%c%c", |
---|
171 | (unsigned char)(w >> 24), (unsigned char)((w >> 16) & 0xff), |
---|
172 | (unsigned char)((w >> 8) & 0xff), (unsigned char)(w & 0xff), |
---|
173 | (unsigned char)(h >> 24), (unsigned char)((h >> 16) & 0xff), |
---|
174 | (unsigned char)((h >> 8) & 0xff), (unsigned char)(h & 0xff)); |
---|
175 | |
---|
176 | for(n = cv->height * cv->width; n--; ) |
---|
177 | { |
---|
178 | uint32_t ch = *chars++; |
---|
179 | uint32_t a = *attr++; |
---|
180 | |
---|
181 | *cur++ = ch >> 24; |
---|
182 | *cur++ = (ch >> 16) & 0xff; |
---|
183 | *cur++ = (ch >> 8) & 0xff; |
---|
184 | *cur++ = ch & 0xff; |
---|
185 | |
---|
186 | *cur++ = a >> 24; |
---|
187 | *cur++ = (a >> 16) & 0xff; |
---|
188 | *cur++ = (a >> 8) & 0xff; |
---|
189 | *cur++ = a & 0xff; |
---|
190 | } |
---|
191 | } |
---|
192 | |
---|
193 | /* Generate UTF-8 representation of current canvas. */ |
---|
194 | static void export_utf8(cucul_canvas_t *cv, cucul_buffer_t *ex) |
---|
195 | { |
---|
196 | static uint8_t const palette[] = |
---|
197 | { |
---|
198 | 0, 4, 2, 6, 1, 5, 3, 7, |
---|
199 | 8, 12, 10, 14, 9, 13, 11, 15 |
---|
200 | }; |
---|
201 | |
---|
202 | char *cur; |
---|
203 | unsigned int x, y; |
---|
204 | |
---|
205 | /* 23 bytes assumed for max length per pixel ('\e[5;1;3x;4y;9x;10ym' plus |
---|
206 | * 4 max bytes for a UTF-8 character). |
---|
207 | * Add height*9 to that (zeroes color at the end and jump to next line) */ |
---|
208 | ex->size = (cv->height * 9) + (cv->width * cv->height * 23); |
---|
209 | ex->data = malloc(ex->size); |
---|
210 | |
---|
211 | cur = ex->data; |
---|
212 | |
---|
213 | for(y = 0; y < cv->height; y++) |
---|
214 | { |
---|
215 | uint32_t *lineattr = cv->attr + y * cv->width; |
---|
216 | uint32_t *linechar = cv->chars + y * cv->width; |
---|
217 | |
---|
218 | uint8_t prevfg = 0x10; |
---|
219 | uint8_t prevbg = 0x10; |
---|
220 | |
---|
221 | for(x = 0; x < cv->width; x++) |
---|
222 | { |
---|
223 | uint32_t attr = lineattr[x]; |
---|
224 | uint32_t ch = linechar[x]; |
---|
225 | uint8_t fg, bg; |
---|
226 | |
---|
227 | fg = ((attr & 0xffff) == CUCUL_COLOR_DEFAULT) ? |
---|
228 | 0x10 : palette[_cucul_argb32_to_ansi4fg(attr)]; |
---|
229 | bg = ((attr >> 16) == CUCUL_COLOR_TRANSPARENT) ? |
---|
230 | 0x10 : palette[_cucul_argb32_to_ansi4bg(attr)]; |
---|
231 | |
---|
232 | /* TODO: the [0 could be omitted in some cases */ |
---|
233 | if(fg != prevfg || bg != prevbg) |
---|
234 | { |
---|
235 | cur += sprintf(cur, "\033[0"); |
---|
236 | |
---|
237 | if(fg < 8) |
---|
238 | cur += sprintf(cur, ";3%d", fg); |
---|
239 | else if(fg < 16) |
---|
240 | cur += sprintf(cur, ";1;3%d;9%d", fg - 8, fg - 8); |
---|
241 | |
---|
242 | if(bg < 8) |
---|
243 | cur += sprintf(cur, ";4%d", bg); |
---|
244 | else if(bg < 16) |
---|
245 | cur += sprintf(cur, ";5;4%d;10%d", bg - 8, bg - 8); |
---|
246 | |
---|
247 | cur += sprintf(cur, "m"); |
---|
248 | } |
---|
249 | |
---|
250 | cur += cucul_utf32_to_utf8(cur, ch); |
---|
251 | |
---|
252 | prevfg = fg; |
---|
253 | prevbg = bg; |
---|
254 | } |
---|
255 | |
---|
256 | if(prevfg != 0x10 || prevbg != 0x10) |
---|
257 | cur += sprintf(cur, "\033[0m"); |
---|
258 | |
---|
259 | cur += sprintf(cur, "\r\n"); |
---|
260 | } |
---|
261 | |
---|
262 | /* Crop to really used size */ |
---|
263 | ex->size = (uintptr_t)(cur - ex->data); |
---|
264 | ex->data = realloc(ex->data, ex->size); |
---|
265 | } |
---|
266 | |
---|
267 | /* Generate ANSI representation of current canvas. */ |
---|
268 | static void export_ansi(cucul_canvas_t *cv, cucul_buffer_t *ex) |
---|
269 | { |
---|
270 | static uint8_t const palette[] = |
---|
271 | { |
---|
272 | 0, 4, 2, 6, 1, 5, 3, 7, |
---|
273 | 8, 12, 10, 14, 9, 13, 11, 15 |
---|
274 | }; |
---|
275 | |
---|
276 | char *cur; |
---|
277 | unsigned int x, y; |
---|
278 | |
---|
279 | uint8_t prevfg = -1; |
---|
280 | uint8_t prevbg = -1; |
---|
281 | |
---|
282 | /* 16 bytes assumed for max length per pixel ('\e[5;1;3x;4ym' plus |
---|
283 | * 1 byte for a CP437 character). |
---|
284 | * Add height*9 to that (zeroes color at the end and jump to next line) */ |
---|
285 | ex->size = (cv->height * 9) + (cv->width * cv->height * 16); |
---|
286 | ex->data = malloc(ex->size); |
---|
287 | |
---|
288 | cur = ex->data; |
---|
289 | |
---|
290 | for(y = 0; y < cv->height; y++) |
---|
291 | { |
---|
292 | uint32_t *lineattr = cv->attr + y * cv->width; |
---|
293 | uint32_t *linechar = cv->chars + y * cv->width; |
---|
294 | |
---|
295 | for(x = 0; x < cv->width; x++) |
---|
296 | { |
---|
297 | uint8_t fg = palette[_cucul_argb32_to_ansi4fg(lineattr[x])]; |
---|
298 | uint8_t bg = palette[_cucul_argb32_to_ansi4bg(lineattr[x])]; |
---|
299 | uint32_t ch = linechar[x]; |
---|
300 | |
---|
301 | if(fg != prevfg || bg != prevbg) |
---|
302 | { |
---|
303 | cur += sprintf(cur, "\033[0;"); |
---|
304 | |
---|
305 | if(fg < 8) |
---|
306 | if(bg < 8) |
---|
307 | cur += sprintf(cur, "3%d;4%dm", fg, bg); |
---|
308 | else |
---|
309 | cur += sprintf(cur, "5;3%d;4%dm", fg, bg - 8); |
---|
310 | else |
---|
311 | if(bg < 8) |
---|
312 | cur += sprintf(cur, "1;3%d;4%dm", fg - 8, bg); |
---|
313 | else |
---|
314 | cur += sprintf(cur, "5;1;3%d;4%dm", fg - 8, bg - 8); |
---|
315 | } |
---|
316 | |
---|
317 | *cur++ = cucul_utf32_to_cp437(ch); |
---|
318 | |
---|
319 | prevfg = fg; |
---|
320 | prevbg = bg; |
---|
321 | } |
---|
322 | |
---|
323 | if(cv->width == 80) |
---|
324 | { |
---|
325 | cur += sprintf(cur, "\033[s\n\033[u"); |
---|
326 | } |
---|
327 | else |
---|
328 | { |
---|
329 | cur += sprintf(cur, "\033[0m\r\n"); |
---|
330 | prevfg = -1; |
---|
331 | prevbg = -1; |
---|
332 | } |
---|
333 | } |
---|
334 | |
---|
335 | /* Crop to really used size */ |
---|
336 | ex->size = (uintptr_t)(cur - ex->data); |
---|
337 | ex->data = realloc(ex->data, ex->size); |
---|
338 | } |
---|
339 | |
---|
340 | /* Generate HTML representation of current canvas. */ |
---|
341 | static void export_html(cucul_canvas_t *cv, cucul_buffer_t *ex) |
---|
342 | { |
---|
343 | char *cur; |
---|
344 | unsigned int x, y, len; |
---|
345 | |
---|
346 | /* The HTML header: less than 1000 bytes |
---|
347 | * A line: 7 chars for "<br />\n" |
---|
348 | * A glyph: 47 chars for "<span style="color:#xxx;background-color:#xxx">" |
---|
349 | * up to 9 chars for "&#xxxxxx;", far less for pure ASCII |
---|
350 | * 7 chars for "</span>" */ |
---|
351 | ex->size = 1000 + cv->height * (7 + cv->width * (47 + 9 + 7)); |
---|
352 | ex->data = malloc(ex->size); |
---|
353 | |
---|
354 | cur = ex->data; |
---|
355 | |
---|
356 | /* HTML header */ |
---|
357 | cur += sprintf(cur, "<html><head>\n"); |
---|
358 | cur += sprintf(cur, "<title>Generated by libcaca %s</title>\n", VERSION); |
---|
359 | cur += sprintf(cur, "</head><body>\n"); |
---|
360 | |
---|
361 | cur += sprintf(cur, "<div cellpadding='0' cellspacing='0' style='%s'>\n", |
---|
362 | "font-family: monospace, fixed; font-weight: bold;"); |
---|
363 | |
---|
364 | for(y = 0; y < cv->height; y++) |
---|
365 | { |
---|
366 | uint32_t *lineattr = cv->attr + y * cv->width; |
---|
367 | uint32_t *linechar = cv->chars + y * cv->width; |
---|
368 | |
---|
369 | for(x = 0; x < cv->width; x += len) |
---|
370 | { |
---|
371 | cur += sprintf(cur, "<span style=\"color:#%.03x;" |
---|
372 | "background-color:#%.03x\">", |
---|
373 | _cucul_argb32_to_rgb12fg(lineattr[x]), |
---|
374 | _cucul_argb32_to_rgb12bg(lineattr[x])); |
---|
375 | |
---|
376 | for(len = 0; |
---|
377 | x + len < cv->width && lineattr[x + len] == lineattr[x]; |
---|
378 | len++) |
---|
379 | { |
---|
380 | if(linechar[x + len] <= 0x00000020) |
---|
381 | cur += sprintf(cur, " "); |
---|
382 | else if(linechar[x + len] < 0x00000080) |
---|
383 | cur += sprintf(cur, "%c", |
---|
384 | (unsigned char)linechar[x + len]); |
---|
385 | else |
---|
386 | cur += sprintf(cur, "&#%i;", |
---|
387 | (unsigned int)linechar[x + len]); |
---|
388 | } |
---|
389 | cur += sprintf(cur, "</span>"); |
---|
390 | } |
---|
391 | /* New line */ |
---|
392 | cur += sprintf(cur, "<br />\n"); |
---|
393 | } |
---|
394 | |
---|
395 | cur += sprintf(cur, "</div></body></html>\n"); |
---|
396 | |
---|
397 | /* Crop to really used size */ |
---|
398 | ex->size = strlen(ex->data) + 1; |
---|
399 | ex->data = realloc(ex->data, ex->size); |
---|
400 | } |
---|
401 | |
---|
402 | /* Export an HTML3 document. This function is way bigger than export_html(), |
---|
403 | * but permits viewing in old browsers (or limited ones such as links). It |
---|
404 | * will not work under gecko (mozilla rendering engine) unless you set a |
---|
405 | * correct header. */ |
---|
406 | static void export_html3(cucul_canvas_t *cv, cucul_buffer_t *ex) |
---|
407 | { |
---|
408 | char *cur; |
---|
409 | unsigned int x, y, len; |
---|
410 | |
---|
411 | /* The HTML table markup: less than 1000 bytes |
---|
412 | * A line: 10 chars for "<tr></tr>\n" |
---|
413 | * A glyph: 40 chars for "<td bgcolor=#xxxxxx><font color=#xxxxxx>" |
---|
414 | * up to 9 chars for "&#xxxxxx;", far less for pure ASCII |
---|
415 | * 12 chars for "</font></td>" */ |
---|
416 | ex->size = 1000 + cv->height * (10 + cv->width * (40 + 9 + 12)); |
---|
417 | ex->data = malloc(ex->size); |
---|
418 | |
---|
419 | cur = ex->data; |
---|
420 | |
---|
421 | /* Table */ |
---|
422 | cur += sprintf(cur, "<table cols='%d' cellpadding='0' cellspacing='0'>\n", |
---|
423 | cv->height); |
---|
424 | |
---|
425 | for(y = 0; y < cv->height; y++) |
---|
426 | { |
---|
427 | uint32_t *lineattr = cv->attr + y * cv->width; |
---|
428 | uint32_t *linechar = cv->chars + y * cv->width; |
---|
429 | |
---|
430 | cur += sprintf(cur, "<tr>"); |
---|
431 | |
---|
432 | for(x = 0; x < cv->width; x += len) |
---|
433 | { |
---|
434 | unsigned int i; |
---|
435 | |
---|
436 | /* Use colspan option to factor cells with same attributes |
---|
437 | * (see below) */ |
---|
438 | len = 1; |
---|
439 | while(x + len < cv->width && lineattr[x + len] == lineattr[x]) |
---|
440 | len++; |
---|
441 | |
---|
442 | cur += sprintf(cur, "<td bgcolor=#%.06lx", (unsigned long int) |
---|
443 | _cucul_argb32_to_rgb24bg(lineattr[x])); |
---|
444 | |
---|
445 | if(len > 1) |
---|
446 | cur += sprintf(cur, " colspan=%d", len); |
---|
447 | |
---|
448 | cur += sprintf(cur, "><font color=#%.06lx>", (unsigned long int) |
---|
449 | _cucul_argb32_to_rgb24fg(lineattr[x])); |
---|
450 | |
---|
451 | for(i = 0; i < len; i++) |
---|
452 | { |
---|
453 | if(linechar[x + i] <= 0x00000020) |
---|
454 | cur += sprintf(cur, " "); |
---|
455 | else if(linechar[x + i] < 0x00000080) |
---|
456 | cur += sprintf(cur, "%c", (unsigned char)linechar[x + i]); |
---|
457 | else |
---|
458 | cur += sprintf(cur, "&#%i;", (unsigned int)linechar[x + i]); |
---|
459 | } |
---|
460 | |
---|
461 | cur += sprintf(cur, "</font></td>"); |
---|
462 | } |
---|
463 | cur += sprintf(cur, "</tr>\n"); |
---|
464 | } |
---|
465 | |
---|
466 | /* Footer */ |
---|
467 | cur += sprintf(cur, "</table>\n"); |
---|
468 | |
---|
469 | /* Crop to really used size */ |
---|
470 | ex->size = (uintptr_t)(cur - ex->data); |
---|
471 | ex->data = realloc(ex->data, ex->size); |
---|
472 | } |
---|
473 | |
---|
474 | /* Export a text file with IRC colours */ |
---|
475 | static void export_irc(cucul_canvas_t *cv, cucul_buffer_t *ex) |
---|
476 | { |
---|
477 | static uint8_t const palette[] = |
---|
478 | { |
---|
479 | 1, 2, 3, 10, 5, 6, 7, 15, /* Dark */ |
---|
480 | 14, 12, 9, 11, 4, 13, 8, 0, /* Light */ |
---|
481 | }; |
---|
482 | |
---|
483 | char *cur; |
---|
484 | unsigned int x, y; |
---|
485 | |
---|
486 | /* 16 bytes assumed for max length per pixel. Worst case scenario: |
---|
487 | * ^Cxx,yy 6 bytes |
---|
488 | * ^B^B 2 bytes |
---|
489 | * ch 6 bytes |
---|
490 | * \r\n 2 bytes |
---|
491 | * In real life, the average bytes per pixel value will be around 5. |
---|
492 | */ |
---|
493 | |
---|
494 | ex->size = 2 + (cv->width * cv->height * 16); |
---|
495 | ex->data = malloc(ex->size); |
---|
496 | |
---|
497 | cur = ex->data; |
---|
498 | |
---|
499 | for(y = 0; y < cv->height; y++) |
---|
500 | { |
---|
501 | uint32_t *lineattr = cv->attr + y * cv->width; |
---|
502 | uint32_t *linechar = cv->chars + y * cv->width; |
---|
503 | |
---|
504 | uint8_t prevfg = 0x10; |
---|
505 | uint8_t prevbg = 0x10; |
---|
506 | |
---|
507 | for(x = 0; x < cv->width; x++) |
---|
508 | { |
---|
509 | uint32_t attr = lineattr[x]; |
---|
510 | uint8_t fg = palette[_cucul_argb32_to_ansi4fg(attr)]; |
---|
511 | uint8_t bg = palette[_cucul_argb32_to_ansi4bg(attr)]; |
---|
512 | uint32_t ch = linechar[x]; |
---|
513 | |
---|
514 | if((attr & 0xffff) == CUCUL_COLOR_DEFAULT) |
---|
515 | fg = 0x10; |
---|
516 | |
---|
517 | if((attr >> 16) == CUCUL_COLOR_TRANSPARENT) |
---|
518 | bg = 0x10; |
---|
519 | |
---|
520 | /* TODO: optimise series of same fg / same bg |
---|
521 | * don't change fg value if ch == ' ' |
---|
522 | * make sure the \x03,%d trick works everywhere */ |
---|
523 | if(bg != prevbg || fg != prevfg) |
---|
524 | { |
---|
525 | int need_escape = 0; |
---|
526 | |
---|
527 | if(bg == 0x10) |
---|
528 | { |
---|
529 | if(fg == 0x10) |
---|
530 | cur += sprintf(cur, "\x0f"); |
---|
531 | else |
---|
532 | { |
---|
533 | if(prevbg == 0x10) |
---|
534 | cur += sprintf(cur, "\x03%d", fg); |
---|
535 | else |
---|
536 | cur += sprintf(cur, "\x0f\x03%d", fg); |
---|
537 | |
---|
538 | if(ch == (uint32_t)',') |
---|
539 | need_escape = 1; |
---|
540 | } |
---|
541 | } |
---|
542 | else |
---|
543 | { |
---|
544 | if(fg == 0x10) |
---|
545 | cur += sprintf(cur, "\x0f\x03,%d", bg); |
---|
546 | else |
---|
547 | cur += sprintf(cur, "\x03%d,%d", fg, bg); |
---|
548 | } |
---|
549 | |
---|
550 | if(ch >= (uint32_t)'0' && ch <= (uint32_t)'9') |
---|
551 | need_escape = 1; |
---|
552 | |
---|
553 | if(need_escape) |
---|
554 | cur += sprintf(cur, "\x02\x02"); |
---|
555 | } |
---|
556 | |
---|
557 | cur += cucul_utf32_to_utf8(cur, ch); |
---|
558 | prevfg = fg; |
---|
559 | prevbg = bg; |
---|
560 | } |
---|
561 | *cur++ = '\r'; |
---|
562 | *cur++ = '\n'; |
---|
563 | } |
---|
564 | |
---|
565 | /* Crop to really used size */ |
---|
566 | ex->size = (uintptr_t)(cur - ex->data); |
---|
567 | ex->data = realloc(ex->data, ex->size); |
---|
568 | } |
---|
569 | |
---|
570 | /* Export a PostScript document. */ |
---|
571 | static void export_ps(cucul_canvas_t *cv, cucul_buffer_t *ex) |
---|
572 | { |
---|
573 | static char const *ps_header = |
---|
574 | "%!\n" |
---|
575 | "%% libcaca PDF export\n" |
---|
576 | "%%LanguageLevel: 2\n" |
---|
577 | "%%Pages: 1\n" |
---|
578 | "%%DocumentData: Clean7Bit\n" |
---|
579 | "/csquare {\n" |
---|
580 | " newpath\n" |
---|
581 | " 0 0 moveto\n" |
---|
582 | " 0 1 rlineto\n" |
---|
583 | " 1 0 rlineto\n" |
---|
584 | " 0 -1 rlineto\n" |
---|
585 | " closepath\n" |
---|
586 | " setrgbcolor\n" |
---|
587 | " fill\n" |
---|
588 | "} def\n" |
---|
589 | "/S {\n" |
---|
590 | " Show\n" |
---|
591 | "} bind def\n" |
---|
592 | "/Courier-Bold findfont\n" |
---|
593 | "8 scalefont\n" |
---|
594 | "setfont\n" |
---|
595 | "gsave\n" |
---|
596 | "6 10 scale\n"; |
---|
597 | |
---|
598 | char *cur; |
---|
599 | unsigned int x, y; |
---|
600 | |
---|
601 | /* 200 is arbitrary but should be ok */ |
---|
602 | ex->size = strlen(ps_header) + (cv->width * cv->height * 200); |
---|
603 | ex->data = malloc(ex->size); |
---|
604 | |
---|
605 | cur = ex->data; |
---|
606 | |
---|
607 | /* Header */ |
---|
608 | cur += sprintf(cur, "%s", ps_header); |
---|
609 | cur += sprintf(cur, "0 %d translate\n", cv->height); |
---|
610 | |
---|
611 | /* Background, drawn using csquare macro defined in header */ |
---|
612 | for(y = cv->height; y--; ) |
---|
613 | { |
---|
614 | uint32_t *lineattr = cv->attr + y * cv->width; |
---|
615 | |
---|
616 | for(x = 0; x < cv->width; x++) |
---|
617 | { |
---|
618 | uint8_t argb[8]; |
---|
619 | _cucul_argb32_to_argb4(*lineattr++, argb); |
---|
620 | cur += sprintf(cur, "1 0 translate\n %f %f %f csquare\n", |
---|
621 | (float)argb[1] * (1.0 / 0xf), |
---|
622 | (float)argb[2] * (1.0 / 0xf), |
---|
623 | (float)argb[3] * (1.0 / 0xf)); |
---|
624 | } |
---|
625 | |
---|
626 | /* Return to beginning of the line, and jump to the next one */ |
---|
627 | cur += sprintf(cur, "-%d 1 translate\n", cv->width); |
---|
628 | } |
---|
629 | |
---|
630 | cur += sprintf(cur, "grestore\n"); /* Restore transformation matrix */ |
---|
631 | cur += sprintf(cur, "0 %d translate\n", cv->height*10); |
---|
632 | |
---|
633 | for(y = cv->height; y--; ) |
---|
634 | { |
---|
635 | uint32_t *lineattr = cv->attr + (cv->height - y - 1) * cv->width; |
---|
636 | uint32_t *linechar = cv->chars + (cv->height - y - 1) * cv->width; |
---|
637 | |
---|
638 | for(x = 0; x < cv->width; x++) |
---|
639 | { |
---|
640 | uint8_t argb[8]; |
---|
641 | uint32_t ch = *linechar++; |
---|
642 | |
---|
643 | _cucul_argb32_to_argb4(*lineattr++, argb); |
---|
644 | |
---|
645 | cur += sprintf(cur, "newpath\n"); |
---|
646 | cur += sprintf(cur, "%d %d moveto\n", (x + 1) * 6, y * 10 + 2); |
---|
647 | cur += sprintf(cur, "%f %f %f setrgbcolor\n", |
---|
648 | (float)argb[5] * (1.0 / 0xf), |
---|
649 | (float)argb[6] * (1.0 / 0xf), |
---|
650 | (float)argb[7] * (1.0 / 0xf)); |
---|
651 | |
---|
652 | if(ch < 0x00000020) |
---|
653 | cur += sprintf(cur, "(?) show\n"); |
---|
654 | else if(ch >= 0x00000080) |
---|
655 | cur += sprintf(cur, "(?) show\n"); |
---|
656 | else switch((uint8_t)(ch & 0x7f)) |
---|
657 | { |
---|
658 | case '\\': |
---|
659 | case '(': |
---|
660 | case ')': |
---|
661 | cur += sprintf(cur, "(\\%c) show\n", (unsigned char)ch); |
---|
662 | break; |
---|
663 | default: |
---|
664 | cur += sprintf(cur, "(%c) show\n", (unsigned char)ch); |
---|
665 | break; |
---|
666 | } |
---|
667 | } |
---|
668 | } |
---|
669 | |
---|
670 | cur += sprintf(cur, "showpage\n"); |
---|
671 | |
---|
672 | /* Crop to really used size */ |
---|
673 | ex->size = (uintptr_t)(cur - ex->data); |
---|
674 | ex->data = realloc(ex->data, ex->size); |
---|
675 | } |
---|
676 | |
---|
677 | /* Export an SVG vector image */ |
---|
678 | static void export_svg(cucul_canvas_t *cv, cucul_buffer_t *ex) |
---|
679 | { |
---|
680 | static char const svg_header[] = |
---|
681 | "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" |
---|
682 | "<svg width=\"%d\" height=\"%d\" viewBox=\"0 0 %d %d\"" |
---|
683 | " xmlns=\"http://www.w3.org/2000/svg\"" |
---|
684 | " xmlns:xlink=\"http://www.w3.org/1999/xlink\"" |
---|
685 | " xml:space=\"preserve\" version=\"1.1\" baseProfile=\"full\">\n"; |
---|
686 | |
---|
687 | char *cur; |
---|
688 | unsigned int x, y; |
---|
689 | |
---|
690 | /* 200 is arbitrary but should be ok */ |
---|
691 | ex->size = strlen(svg_header) + (cv->width * cv->height * 200); |
---|
692 | ex->data = malloc(ex->size); |
---|
693 | |
---|
694 | cur = ex->data; |
---|
695 | |
---|
696 | /* Header */ |
---|
697 | cur += sprintf(cur, svg_header, cv->width * 6, cv->height * 10, |
---|
698 | cv->width * 6, cv->height * 10); |
---|
699 | |
---|
700 | cur += sprintf(cur, " <g id=\"mainlayer\" font-size=\"12\">\n"); |
---|
701 | |
---|
702 | /* Background */ |
---|
703 | for(y = 0; y < cv->height; y++) |
---|
704 | { |
---|
705 | uint32_t *lineattr = cv->attr + y * cv->width; |
---|
706 | |
---|
707 | for(x = 0; x < cv->width; x++) |
---|
708 | { |
---|
709 | cur += sprintf(cur, "<rect style=\"fill:#%.03x\" x=\"%d\" y=\"%d\"" |
---|
710 | " width=\"6\" height=\"10\"/>\n", |
---|
711 | _cucul_argb32_to_rgb12bg(*lineattr++), |
---|
712 | x * 6, y * 10); |
---|
713 | } |
---|
714 | } |
---|
715 | |
---|
716 | /* Text */ |
---|
717 | for(y = 0; y < cv->height; y++) |
---|
718 | { |
---|
719 | uint32_t *lineattr = cv->attr + y * cv->width; |
---|
720 | uint32_t *linechar = cv->chars + y * cv->width; |
---|
721 | |
---|
722 | for(x = 0; x < cv->width; x++) |
---|
723 | { |
---|
724 | uint32_t ch = *linechar++; |
---|
725 | |
---|
726 | cur += sprintf(cur, "<text style=\"fill:#%.03x\" " |
---|
727 | "x=\"%d\" y=\"%d\">", |
---|
728 | _cucul_argb32_to_rgb12fg(*lineattr++), |
---|
729 | x * 6, (y * 10) + 10); |
---|
730 | if(ch < 0x00000020) |
---|
731 | *cur++ = '?'; |
---|
732 | else if(ch > 0x0000007f) |
---|
733 | cur += cucul_utf32_to_utf8(cur, ch); |
---|
734 | else switch((uint8_t)ch) |
---|
735 | { |
---|
736 | case '>': cur += sprintf(cur, ">"); break; |
---|
737 | case '<': cur += sprintf(cur, "<"); break; |
---|
738 | case '&': cur += sprintf(cur, "&"); break; |
---|
739 | default: *cur++ = ch; break; |
---|
740 | } |
---|
741 | cur += sprintf(cur, "</text>\n"); |
---|
742 | } |
---|
743 | } |
---|
744 | |
---|
745 | cur += sprintf(cur, " </g>\n"); |
---|
746 | cur += sprintf(cur, "</svg>\n"); |
---|
747 | |
---|
748 | /* Crop to really used size */ |
---|
749 | ex->size = (uintptr_t)(cur - ex->data); |
---|
750 | ex->data = realloc(ex->data, ex->size); |
---|
751 | } |
---|
752 | |
---|
753 | /* Export a TGA image */ |
---|
754 | static void export_tga(cucul_canvas_t *cv, cucul_buffer_t *ex) |
---|
755 | { |
---|
756 | char const * const * fontlist; |
---|
757 | char * cur; |
---|
758 | cucul_font_t *f; |
---|
759 | unsigned int i, w, h; |
---|
760 | |
---|
761 | fontlist = cucul_get_font_list(); |
---|
762 | if(!fontlist[0]) |
---|
763 | return; |
---|
764 | |
---|
765 | f = cucul_load_font(fontlist[0], 0); |
---|
766 | |
---|
767 | w = cucul_get_canvas_width(cv) * cucul_get_font_width(f); |
---|
768 | h = cucul_get_canvas_height(cv) * cucul_get_font_height(f); |
---|
769 | |
---|
770 | ex->size = w * h * 4 + 18; /* 32 bpp + 18 bytes for the header */ |
---|
771 | ex->data = malloc(ex->size); |
---|
772 | |
---|
773 | cur = ex->data; |
---|
774 | |
---|
775 | /* ID Length */ |
---|
776 | cur += sprintf(cur, "%c", 0); |
---|
777 | /* Color Map Type: no colormap */ |
---|
778 | cur += sprintf(cur, "%c", 0); |
---|
779 | /* Image Type: uncompressed truecolor */ |
---|
780 | cur += sprintf(cur, "%c", 2); |
---|
781 | /* Color Map Specification: no color map */ |
---|
782 | memset(cur, 0, 5); cur += 5; |
---|
783 | |
---|
784 | /* Image Specification */ |
---|
785 | cur += sprintf(cur, "%c%c", 0, 0); /* X Origin */ |
---|
786 | cur += sprintf(cur, "%c%c", 0, 0); /* Y Origin */ |
---|
787 | cur += sprintf(cur, "%c%c", w & 0xff, w >> 8); /* Width */ |
---|
788 | cur += sprintf(cur, "%c%c", h & 0xff, h >> 8); /* Height */ |
---|
789 | cur += sprintf(cur, "%c", 32); /* Pixel Depth */ |
---|
790 | cur += sprintf(cur, "%c", 40); /* Image Descriptor */ |
---|
791 | |
---|
792 | /* Image ID: no ID */ |
---|
793 | /* Color Map Data: no colormap */ |
---|
794 | |
---|
795 | /* Image Data */ |
---|
796 | cucul_render_canvas(cv, f, cur, w, h, 4 * w); |
---|
797 | |
---|
798 | /* Swap bytes. What a waste of time. */ |
---|
799 | for(i = 0; i < w * h * 4; i += 4) |
---|
800 | { |
---|
801 | char w; |
---|
802 | w = cur[i]; cur[i] = cur[i + 3]; cur[i + 3] = w; |
---|
803 | w = cur[i + 1]; cur[i + 1] = cur[i + 2]; cur[i + 2] = w; |
---|
804 | } |
---|
805 | |
---|
806 | cucul_free_font(f); |
---|
807 | } |
---|
808 | |
---|