diff options
Diffstat (limited to 'nexgb/xgb_help.go')
-rw-r--r-- | nexgb/xgb_help.go | 52 |
1 files changed, 21 insertions, 31 deletions
diff --git a/nexgb/xgb_help.go b/nexgb/xgb_help.go index f7b4948..b54ab41 100644 --- a/nexgb/xgb_help.go +++ b/nexgb/xgb_help.go @@ -5,20 +5,6 @@ import ( "strings" ) -// getExtensionOpcode retrieves the extension opcode from the extensions map. -// If one doesn't exist, just return 0. An X error will likely result. -func (c *Conn) getExtensionOpcode(name string) byte { - return c.extensions[name] -} - -func (c *Conn) bytesPadding(buf []byte) []byte { - return append(buf, make([]byte, pad(len(buf))-len(buf))...) -} - -func (c *Conn) bytesString(str string) []byte { - return c.bytesPadding([]byte(str)) -} - // stringsJoin is an alias to strings.Join. It allows us to avoid having to // import 'strings' in each of the generated Go files. func stringsJoin(ss []string, sep string) string { @@ -31,13 +17,29 @@ func sprintf(format string, v ...interface{}) string { } // Pad a length to align on 4 bytes. -func pad(n int) int { return (n + 3) & ^3 } +func pad(n int) int { + return (n + 3) & ^3 +} + +// popCount counts the number of bits set in a value list mask. +func popCount(mask0 int) int { + mask := uint32(mask0) + n := 0 + for i := uint32(0); i < 32; i++ { + if mask&(1<<i) != 0 { + n++ + } + } + return n +} +// Put16 takes a 16 bit integer and copies it into a byte slice. func Put16(buf []byte, v uint16) { buf[0] = byte(v) buf[1] = byte(v >> 8) } +// Put32 takes a 32 bit integer and copies it into a byte slice. func Put32(buf []byte, v uint32) { buf[0] = byte(v) buf[1] = byte(v >> 8) @@ -45,6 +47,7 @@ func Put32(buf []byte, v uint32) { buf[3] = byte(v >> 24) } +// Put64 takes a 64 bit integer and copies it into a byte slice. func Put64(buf []byte, v uint64) { buf[0] = byte(v) buf[1] = byte(v >> 8) @@ -56,12 +59,14 @@ func Put64(buf []byte, v uint64) { buf[7] = byte(v >> 56) } +// Get16 constructs a 16 bit integer from the beginning of a byte slice. func Get16(buf []byte) uint16 { v := uint16(buf[0]) v |= uint16(buf[1]) << 8 return v } +// Get32 constructs a 32 bit integer from the beginning of a byte slice. func Get32(buf []byte) uint32 { v := uint32(buf[0]) v |= uint32(buf[1]) << 8 @@ -70,6 +75,7 @@ func Get32(buf []byte) uint32 { return v } +// Get64 constructs a 64 bit integer from the beginning of a byte slice. func Get64(buf []byte) uint64 { v := uint64(buf[0]) v |= uint64(buf[1]) << 8 @@ -81,19 +87,3 @@ func Get64(buf []byte) uint64 { v |= uint64(buf[7]) << 56 return v } - -// Voodoo to count the number of bits set in a value list mask. -func popCount(mask0 int) int { - mask := uint32(mask0) - n := 0 - for i := uint32(0); i < 32; i++ { - if mask&(1<<i) != 0 { - n++ - } - } - return n -} - -// DefaultScreen returns the Screen info for the default screen, which is -// 0 or the one given in the display argument to Dial. -func (c *Conn) DefaultScreen() *ScreenInfo { return &c.Setup.Roots[c.defaultScreen] } |