girineko/dhcpd-pools
1
0
Fork 0
mirror of git://git.code.sf.net/p/dhcpd-pools/code synced 2025-12-16 15:57:00 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

getdata: skip strings before nth_field analysis

Browse source 
This will allow nth_field function to begin from first field, and stop
immediately when it ends, which makes function much more simple and quite
a bit quicker.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
This commit is contained in:
Sami Kerola 2012-11-09 23:29:49 +00:00
parent b918e9157d
commit 4341d92d41
2 changed files with 12 additions and 30 deletions
Download patch file Download diff file Expand all files Collapse all files

4
src/dhcpd-pools.h
View file

@ -157,8 +157,8 @@ int prepare_memory(void);
int parse_leases(void);
void parse_config(int, const char *__restrict, struct shared_network_t *__restrict)
__attribute__ ((nonnull(2, 3)));
int nth_field(int n, char *__restrict dest, const char *__restrict src)
__attribute__ ((nonnull(2, 3)))
void nth_field(char *__restrict dest, const char *__restrict src)
__attribute__ ((nonnull(1, 2)))
#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
__attribute__ ((__hot__))
#endif

38
src/getdata.c
View file

@ -112,8 +112,8 @@ int parse_leases(void)
}
/* It's a lease, save IP */
if (xstrstr(line, "lease", 5)) {
strncpy(ipstring, line, MAXLEN);
nth_field(2, ipstring, ipstring);
memcpy(ipstring, line + 6, 16);
nth_field(ipstring, ipstring);
inet_aton(ipstring, &inp);
sw_active_lease = 0;
continue;
@ -147,7 +147,7 @@ int parse_leases(void)
if ((macaddr != NULL)
&& (sw_active_lease == 1)
&& (xstrstr(line, " hardware ethernet", 19))) {
nth_field(3, macstring, line);
nth_field(macstring, line + 20);
if (macstring) {
macstring[17] = '\0';
macaddr_p->ethernet = xstrdup(macstring);
@ -168,36 +168,18 @@ int parse_leases(void)
return 0;
}
/* Like strcpy but for field which is separated by white spaces. Number of
* first field is 1 and not 0 like C programs should have. Question of
* semantics, send mail to author if this annoys. All performance boosts for
* this function are well come. */
int nth_field(int n, char *restrict dest, const char *restrict src)
/* Like strcpy but for field which is separated by white spaces. */
void nth_field(char *restrict dest, const char *restrict src)
{
int i, j = 0, wordn = 0, len;
size_t i, len;
len = strlen(src);
for (i = 0; i < len; i++) {
if (isspace(src[i])) {
if (!(wordn < n)) {
dest[j] = '\0';
break;
}
j = 0;
} else {
if (j == 0) {
wordn++;
if (n + 1 < wordn)
break;
}
if (wordn == n) {
dest[j] = src[i];
}
j++;
dest[i] = src[i];
if (src[i] == ' ' || dest[i] == '\0') {
dest[i] = '\0';
break;
}
}
return 0;
}
/* dhcpd.conf interesting words */