mirror of
https://github.com/tinygo-org/drivers.git
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sago35
52 lines
1.1 KiB
Go
52 lines
1.1 KiB
Go
package rtl8720dn
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import (
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"bytes"
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"encoding/binary"
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"fmt"
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"strconv"
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"strings"
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)
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type httpHeader []byte
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func (h httpHeader) ContentLength() int {
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contentLength := -1
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idx := bytes.Index(h, []byte("Content-Length: "))
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if 0 <= idx {
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_, err := fmt.Sscanf(string(h[idx+16:]), "%d", &contentLength)
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if err != nil {
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return -1
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}
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}
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return contentLength
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}
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// TODO: IPAddress implementation should be moved under drivers/net
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// The same implementation exists in wifinina.
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type IPAddress []byte
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func (addr IPAddress) String() string {
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if len(addr) < 4 {
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return ""
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}
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return strconv.Itoa(int(addr[0])) + "." + strconv.Itoa(int(addr[1])) + "." + strconv.Itoa(int(addr[2])) + "." + strconv.Itoa(int(addr[3]))
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}
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func ParseIPv4(s string) (IPAddress, error) {
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v := strings.Split(s, ".")
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v0, _ := strconv.Atoi(v[0])
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v1, _ := strconv.Atoi(v[1])
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v2, _ := strconv.Atoi(v[2])
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v3, _ := strconv.Atoi(v[3])
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return IPAddress([]byte{byte(v0), byte(v1), byte(v2), byte(v3)}), nil
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}
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func (addr IPAddress) AsUint32() uint32 {
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if len(addr) < 4 {
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return 0
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}
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b := []byte(string(addr))
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return binary.BigEndian.Uint32(b[0:4])
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}
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