43 lines
887 B
Go
43 lines
887 B
Go
package main
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import (
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"unsafe"
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"github.com/goplus/llgo/c"
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"github.com/goplus/llgo/c/os"
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"github.com/goplus/llgo/c/sys"
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)
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func main() {
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var readFds sys.FdSet
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sys.FD_ZERO(&readFds)
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sys.FD_SET(0, &readFds)
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var tv sys.Timeval
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tv.Sec = 5
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tv.Usec = 0
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c.Printf(c.Str("Waiting for input on stdin...\n"))
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ret := sys.Select(1, &readFds, nil, nil, &tv)
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if ret == -1 {
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c.Perror(c.Str("select error"))
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c.Exit(1)
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} else if ret == 0 {
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c.Printf(c.Str("Timeout occurred! No data after 5 seconds.\n"))
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} else {
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if sys.FD_ISSET(0, &readFds) != 0 {
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var buffer [100]c.Char
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n := os.Read(0, c.Pointer(&buffer[:][0]), unsafe.Sizeof(buffer)-1)
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if n == -1 {
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c.Perror(c.Str("read error"))
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c.Exit(1)
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} else if n == 0 {
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c.Printf(c.Str("End of file\n"))
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} else {
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buffer[n] = c.Char(0)
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c.Printf(c.Str("Read %ld bytes: %s\n"), n, &buffer[0])
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}
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}
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}
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}
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