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use fread instead of mmap to read in the comment area from the keypad. 

fread is simpler and more portable, and there is no performance gain
in using mmap.



git-svn-id: http://svn.digium.com/svn/asterisk/trunk@94820 f38db490-d61c-443f-a65b-d21fe96a405b
This commit is contained in:
rizzo 2007-12-26 23:00:29 +00:00
parent 5715ce80b5
commit e7bc9bf26e
1 changed files with 36 additions and 61 deletions
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97
channels/console_gui.c
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@ -661,82 +661,57 @@ static int keypad_cfg_read(struct gui_info *gui, const char *val);
static void keypad_setup(struct gui_info *gui, const char *kp_file)
{
int fd = -1;
void *p = NULL;
off_t l = 0;
FILE *fd;
char buf[1024];
const char region[] = "region";
int reg_len = strlen(region);
int in_comment = 0;
if (gui->keypad)
return;
gui->keypad = get_keypad(kp_file);
if (!gui->keypad)
return;
/* now try to read the keymap from the file. */
fd = fopen(kp_file, "r");
if (fd == NULL) {
ast_log(LOG_WARNING, "fail to open %s\n", kp_file);
return;
}
/*
* If the keypad image has a comment field, try to read
* the button location from there. The block must be
* keypad_entry = token shape x0 y0 x1 y1 h
* the button location from there. The block must start with
* a comment (or empty) line, and continue with entries like:
* region = token shape x0 y0 x1 y1 h
* ...
* (basically, lines have the same format as config file entries.
* same as the keypad_entry.
* (basically, lines have the same format as config file entries).
* You can add it to a jpeg file using wrjpgcom
*/
do { /* only once, in fact */
const char region[] = "region";
int reg_len = strlen(region);
const unsigned char *s, *e;
while (fgets(buf, sizeof(buf), fd)) {
char *s;
fd = open(kp_file, O_RDONLY);
if (fd < 0) {
ast_log(LOG_WARNING, "fail to open %s\n", kp_file);
break;
}
l = lseek(fd, 0, SEEK_END);
if (l <= 0) {
ast_log(LOG_WARNING, "fail to lseek %s\n", kp_file);
break;
}
p = mmap(NULL, l, PROT_READ, 0, fd, 0);
if (p == NULL) {
ast_log(LOG_WARNING, "fail to mmap %s size %ld\n", kp_file, (long)l);
break;
}
e = (const unsigned char *)p + l;
for (s = p; s < e - 20 ; s++) {
if (!memcmp(s, region, reg_len)) { /* keyword found */
/* reset previous entries */
keypad_cfg_read(gui, "reset");
break;
}
}
for ( ;s < e - 20; s++) {
char buf[256];
const unsigned char *s1;
if (index(" \t\r\n", *s)) /* ignore blanks */
if (!strstr(buf, region)) { /* no keyword yet */
if (!in_comment) /* still waiting for initial comment block */
continue;
if (*s > 127) /* likely end of comment */
else
break;
if (memcmp(s, region, reg_len)) /* keyword not found */
break;
s += reg_len;
l = MIN(sizeof(buf), e - s);
ast_copy_string(buf, s, l);
s1 = ast_skip_blanks(buf); /* between token and '=' */
if (*s1++ != '=') /* missing separator */
break;
if (*s1 == '>') /* skip => */
s1++;
keypad_cfg_read(gui, ast_skip_blanks(s1));
/* now wait for a newline */
s1 = s;
while (s1 < e - 20 && !index("\r\n", *s1) && *s1 < 128)
s1++;
s = s1;
}
} while (0);
if (p)
munmap(p, l);
if (fd >= 0)
close(fd);
if (!in_comment) { /* first keyword, reset previous entries */
keypad_cfg_read(gui, "reset");
in_comment = 1;
}
s = ast_skip_blanks(buf);
ast_trim_blanks(s);
if (memcmp(s, region, reg_len))
break; /* keyword not found */
s = ast_skip_blanks(s + reg_len); /* space between token and '=' */
if (*s++ != '=') /* missing separator */
break;
if (*s == '>') /* skip '>' if present */
s++;
keypad_cfg_read(gui, ast_skip_blanks(s));
}
fclose(fd);
}
/* [re]set the main sdl window, useful in case of resize */