base-files: /usr/lib/common.awk is only used by /bin/ipcalc.sh, move the code there

[openwrt.git] / package / base-files / files / bin / ipcalc.sh

diff --git a/package/base-files/files/bin/ipcalc.sh b/package/base-files/files/bin/ipcalc.sh
index 318980e..e482667 100755 (executable)
--- a/package/base-files/files/bin/ipcalc.sh
+++ b/package/base-files/files/bin/ipcalc.sh
@@ -1,6 +1,27 @@
 #!/bin/sh
 
 awk -f /usr/lib/common.awk -f - $* <<EOF
+function bitcount(c) {
+       c=and(rshift(c, 1),0x55555555)+and(c,0x55555555)
+       c=and(rshift(c, 2),0x33333333)+and(c,0x33333333)
+       c=and(rshift(c, 4),0x0f0f0f0f)+and(c,0x0f0f0f0f)
+       c=and(rshift(c, 8),0x00ff00ff)+and(c,0x00ff00ff)
+       c=and(rshift(c,16),0x0000ffff)+and(c,0x0000ffff)
+       return c
+}
+
+function ip2int(ip) {
+       for (ret=0,n=split(ip,a,"\."),x=1;x<=n;x++) ret=or(lshift(ret,8),a[x]) 
+       return ret
+}
+
+function int2ip(ip,ret,x) {
+       ret=and(ip,255)
+       ip=rshift(ip,8)
+       for(;x<3;ret=and(ip,255)"."ret,ip=rshift(ip,8),x++);
+       return ret
+}
+
 BEGIN {
        ipaddr=ip2int(ARGV[1])
        netmask=ip2int(ARGV[2])