devs/foxbox
1
0
Fork 0
forked from len0rd/rockbox
Code Pull requests Activity

Implement fast_readline as a function and use it for tagtree also.

Browse source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11301 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Miika Pekkarinen 2006-10-21 20:37:33 +00:00
parent 593b552486
commit a1ac743453
4 changed files with 199 additions and 175 deletions
Download patch file Download diff file Expand all files Collapse all files

47
apps/misc.c
View file

@ -217,6 +217,53 @@ int read_line(int fd, char* buffer, int buffer_size)
return errno ? -1 : num_read;
}
/* Performance optimized version of the previous function. */
int fast_readline(int fd, char *buf, int buf_size, void *parameters,
int (*callback)(int n, const char *buf, void *parameters))
{
char *p, *next;
int rc, pos = 0;
int count = 0;
while ( 1 )
{
next = NULL;
rc = read(fd, &buf[pos], buf_size - pos - 1);
if (rc >= 0)
buf[pos+rc] = '\0';
if ( (p = strchr(buf, '\r')) != NULL)
{
*p = '\0';
next = ++p;
}
else
p = buf;
if ( (p = strchr(p, '\n')) != NULL)
{
*p = '\0';
next = ++p;
}
rc = callback(count, buf, parameters);
if (rc < 0)
return rc;
count++;
if (next)
{
pos = buf_size - ((long)next - (long)buf) - 1;
memmove(buf, next, pos);
}
else
break ;
}
return 0;
}
#ifdef HAVE_LCD_BITMAP
#if LCD_DEPTH == 16