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| updates to <code> tag |
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Matthew Leverton
Supreme Loser
January 1999
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The code tag now looks like: <code name="filename" start="1"> where both parameters are optional. The name attribute is meant to be the name or title of the source code. The start attribute is the first line number. If omitted, it is assumed to be 1. Short code snippets with no name and starting line number will be inline without any chrome. Lines can be highlighted by appending *** to them. To turn off line numbers (copy / paste) click the # button. Click the 'E' to get rid of the scrollbars. 1#include <stdio.h>
2#include <stdlib.h>
3#include <string.h>
4
5#include "allegro5/allegro5.h"
6#include "allegro5/internal/aintern.h"
7#include "allegro5/internal/aintern_dtor.h"
8#include "allegro5/internal/aintern_memory.h"
9
10
11
12#define PREFIX_I "al-main INFO: "
13#define PREFIX_W "al-main WARNING: "
14#define PREFIX_E "al-main ERROR: "
15
16
17/* debugging stuff */
18static int debug_assert_virgin = true; 19static int debug_trace_virgin = true;
20
21static FILE *assert_file = NULL;
22static FILE *trace_file = NULL;
23
24static int (*assert_handler)(AL_CONST char *msg) = NULL;
25int (*_al_trace_handler)(AL_CONST char *msg) = NULL;
26
27
28/* dynamic registration system for cleanup code */
29struct al_exit_func {
30 void (*funcptr)(void);
31 AL_CONST char *desc;
32 struct al_exit_func *next;
33};
34
35static struct al_exit_func *exit_func_list = NULL;
36
37
38
39/* _al_add_exit_func:
40 * Adds a function to the list that need to be called on Allegro shutdown.
41 * `desc' should point to a statically allocated string to help with
42 * debugging.
43 */
44void _al_add_exit_func(void (*func)(void), AL_CONST char *desc)
45{
46 struct al_exit_func *n;
47
48 for (n = exit_func_list; n; n = n->next)
49 if (n->funcptr == func)
50 return;
51
52 n = _AL_MALLOC(sizeof(struct al_exit_func));
53 if (!n)
54 return;
55
56 n->next = exit_func_list;
57 n->funcptr = func;
58 n->desc = desc;
59 exit_func_list = n;
60}
61
62
63
64/* _al_remove_exit_func:
65 * Removes a function from the list that need to be called on Allegro
66 * shutdown.
67 */
68void _al_remove_exit_func(void (*func)(void))
69{
70 struct al_exit_func *iter = exit_func_list, *prev = NULL;
71
72 while (iter) {
73 if (iter->funcptr == func) {
74 if (prev)
75 prev->next = iter->next;
76 else
77 exit_func_list = iter->next;
78 _AL_FREE(iter);
79 return;
80 }
81 prev = iter;
82 iter = iter->next;
83 }
84}
85
86
87
88/* _al_run_exit_funcs:
89 * Run all the functions registered with _al_add_exit_func, in reverse order of
90 * registration.
91 */
92void _al_run_exit_funcs(void)
93{
94 while (exit_func_list) {
95 void (*func)(void) = exit_func_list->funcptr;
96 _al_remove_exit_func(func);
97 (*func)();
98 }
99}
100
101
102
103/* debug_exit:
104 * Closes the debugging output files.
105 */
106static void debug_exit(void)
107{
108 if (assert_file) {
109 fclose(assert_file);
110 assert_file = NULL;
111 }
112
113 if (trace_file) {
114 fclose(trace_file);
115 trace_file = NULL;
116 }
117
118 debug_assert_virgin = true;
119 debug_trace_virgin = true;
120}
121
122
123
124/* al_assert:
125 * Raises an assert (uses ASCII strings).
126 */
127void al_assert(AL_CONST char *file, int line)
128{
129 static int asserted = false;
130 int olderr = errno;
131 char buf[128];
132 char *s;
133
134 if (asserted)
135 return;
136
137 /* todo, some day: use snprintf (C99) */
138 sprintf(buf, "Assert failed at line %d of %s", line, file);
139
140 if (assert_handler) {
141 if (assert_handler(buf))
142 return;
143 }
144
145 if (debug_assert_virgin) {
146 s = getenv("ALLEGRO_ASSERT");
147
148 if (s)
149 assert_file = fopen(s, "w");
150 else
151 assert_file = NULL;
152
153 if (debug_trace_virgin)
154 _al_add_exit_func(debug_exit, "debug_exit");
155
156 debug_assert_virgin = false;
157 }
158
159 if (assert_file) {
160 fprintf(assert_file, "%s\n", buf);
161 fflush(assert_file);
162 }
163 else {
164 asserted = true;
165
166/*
167 if ((system_driver) && (system_driver->assert)) {
168 system_driver->assert(buf);
169 }
170 else {
171 */
172// al_uninstall_system();
173#ifndef ALLEGRO_MSVC
174 fprintf(stderr, "%s\n", buf);
175#endif
176 abort();
177 // }
178 }
179
180 errno = olderr;
181}
182
183
184
185/* al_trace:
186 * Outputs a trace message (uses ASCII strings).
187 */
188void al_trace(AL_CONST char *msg, ...)
189{
190 int olderr = errno;
191 char buf[512];
192 char *s;
193
194 /* todo, some day: use vsnprintf (C99) */
195 va_list ap;
196 va_start(ap, msg);
197 vsprintf(buf, msg, ap);
198 va_end(ap);
199
200 if (_al_trace_handler) {
201 if (_al_trace_handler(buf))
202 return;
203 }
204
205 if (debug_trace_virgin) {
206 s = getenv("ALLEGRO_TRACE");
207
208 if (s)
209 trace_file = fopen(s, "w");
210 else
211 trace_file = fopen("allegro.log", "w");
212
213 if (debug_assert_virgin)
214 _al_add_exit_func(debug_exit, "debug_exit");
215
216 debug_trace_virgin = false;
217 }
218
219 if (trace_file) {
220 fwrite(buf, sizeof(char), strlen(buf), trace_file);
221 fflush(trace_file);
222 }
223
224 errno = olderr;
225}
226
227
228
229/* register_assert_handler:
230 * Installs a user handler for assert failures.
231 */
232void register_assert_handler(int (*handler)(AL_CONST char *msg))
233{
234 assert_handler = handler;
235}
236
237
238
239/* register_trace_handler:
240 * Installs a user handler for trace output.
241 */
242void register_trace_handler(int (*handler)(AL_CONST char *msg))
243{
244 _al_trace_handler = handler;
245}
When making this post, I realized that there is a slight problem with multiline coloring (e.g., comments) that disables highlight ability and the original colors. That will be fixed later. Refresh JS/CSS files. |
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ImLeftFooted
Member #3,935
October 2003
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Cool! I was gonna say it was ugly but then I refreshed the js/css. Very pretty. 125 int c = 46;
126
127 c = 43 128
129 if(c == 43)
The error is on line 127. |
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someone972
Member #7,719
August 2006
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It takes a long time (two seconds roughly) to turn the line numbers off in IE7. Turning them back on is significantly faster. A nice set of additions. EDIT: Dustin's post removes the line #s fast. ______________________________________ |
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Schyfis
Member #9,752
May 2008
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Hiding and showing line numbers fast enough on Matthew's example breaks the scroll bar (Firefox 3.0.7). ________________________________________________________________________________________________________ |
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torhu
Member #2,727
September 2002
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Cool stuff. When I disable line numbers, the font size changes from 10 to 8. Using Firefox 3.1b3 on Windows. |
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Jonatan Hedborg
Member #4,886
July 2004
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Very nice! I really like all the new work you've put into the site lately Matthew! Schyfis said: Hiding and showing line numbers fast enough on Matthew's example breaks the scroll bar Same here
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BAF
Member #2,981
December 2002
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Now add support for multiple languages. |
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ReyBrujo
Moderator
January 2001
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Very nice! Now it looks like a programming forum! Could you add some way of selecting all code instead of having to scroll around? That is the only thing I would want. The only problem I find is that when scrolling with the well the page upwards or downwards, the top of the code box somehow jumps above the navigation bar of the site, so you get some strange effect. -- |
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Thomas Fjellstrom
Member #476
June 2000
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Here's what it looks like in konqueror (4.3 svn), I'm sure you can see a couple flaws. {"name":"accnewcodeboxkonqi.png","src":"\/\/djungxnpq2nug.cloudfront.net\/image\/cache\/2\/d\/2d9e97fe0d1c247dffc4b31cadee19bd.png","w":814,"h":425,"tn":"\/\/djungxnpq2nug.cloudfront.net\/image\/cache\/2\/d\/2d9e97fe0d1c247dffc4b31cadee19bd"} -- |
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BAF
Member #2,981
December 2002
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Use a better browser. |
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Thomas Fjellstrom
Member #476
June 2000
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edit:nm edit2: -- |
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MiquelFire
Member #3,110
January 2003
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I find it really odd that everything there's an update, my cache seems to have been cleared out enough that I don't need to hit Ctrl+F5... 1int c;
2int y;
3
4int main(int n, char **args) {
5 int c; 6 return 0;
7}
--- |
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bamccaig
Member #7,536
July 2006
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1#include <iostream>
2
3int main(int argc, char *argv[])
4{
5 std::cout << "Allegro.cc FTW!\n" << std::endl; 6
7 return 0;
8}
-- acc.js | al4anim - Allegro 4 Animation library | Allegro 5 VS/NuGet Guide | Allegro.cc Mockup | Allegro.cc <code> Tag | Allegro 4 Timer Example (w/ Semaphores) | Allegro 5 "Winpkg" (MSVC readme) | Bambot | Blog | C++ STL Container Flowchart | Castopulence Software | Check Return Values | Derail? | Is This A Discussion? Flow Chart | Filesystem Hierarchy Standard | Clean Code Talks - Global State and Singletons | How To Use Header Files | GNU/Linux (Debian, Fedora, Gentoo) | rot (rot13, rot47, rotN) | Streaming |
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Kibiz0r
Member #6,203
September 2005
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The collapse/expand feature could stand to be a little more obvious. I don't think newbies would catch on without prompting. --- |
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Matthew Leverton
Supreme Loser
January 1999
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someone972 said: It takes a long time (two seconds roughly) to turn the line numbers off in IE7. Turning them back on is significantly faster. IE is a horrible web browser. If you have any choice, you shouldn't use it. Let's take a look at the benchmark of the said operation:
This is just a typical string build during a DOM traversal. Safari is so fast you don't even realize anything has happened. Opera and Firefox are both nearly as fast—neither of them feel lagged. Then IE 8, Microsoft's latest and greatest browser, steps up to the plate and takes nearly a second. But keep using IE. |
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ReyBrujo
Moderator
January 2001
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Hmm... I would like the top (filename, numbering on/off) to be at the bottom too if you expand the code and scrolled to the bottom. Also, although I am not sure if it is possible at all, can I generate a URL to point to the line 104 of the code you posted at the top? -- |
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Matthew Leverton
Supreme Loser
January 1999
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Fixed some bugs. |
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X-G
Member #856
December 2000
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No way to do inline code snippets yet? -- |
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torhu
Member #2,727
September 2002
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Thanks for fixing the font size, but any chance of courier new 10 instead of 8? Maybe I'm just old, but reading text that small is not a joy. |
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Matthew Leverton
Supreme Loser
January 1999
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You can use custom CSS to change things like that. div.source-code div.inner td, div.source-code div.inner pre { font-size: 10pt !important; }
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torhu
Member #2,727
September 2002
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Cool, thanks. |
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ReyBrujo
Moderator
January 2001
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Neat, now it looks precious. -- |
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Darizel
Member #10,585
January 2009
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ReyBrujo said: precious
Looks at your avatar ---------- |
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Matthew Leverton
Supreme Loser
January 1999
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X-G said: No way to do inline code snippets yet? Just <code> with no new lines. e.g., while (false) create_bitmap(640, 480) |
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Thomas Fjellstrom
Member #476
June 2000
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test: int test(char bar);*** seems not to work
works... -- |
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