patch: fmt, os, runtime, syscall, time

internal/lib/syscall/syscall.go

@@ -24,17 +24,13 @@ import (
 	"github.com/goplus/llgo/c/os"
 )
 
-func errnoErr(errno c.Int) error {
-	panic("todo")
-}
-
 func Getcwd(buf []byte) (n int, err error) {
 	ptr := unsafe.Pointer(unsafe.SliceData(buf))
 	ret := os.Getcwd(ptr, uintptr(len(buf)))
 	if ret != nil {
 		return int(c.Strlen(ret)), nil
 	}
-	return 0, errnoErr(os.Errno)
+	return 0, Errno(os.Errno)
 }
 
 func Getwd() (string, error) {
@@ -42,5 +38,57 @@ func Getwd() (string, error) {
 	if wd != nil {
 		return c.GoString(wd), nil
 	}
-	return "", errnoErr(os.Errno)
+	return "", Errno(os.Errno)
+}
+
+func Getenv(key string) (value string, found bool) {
+	ret := os.Getenv(c.AllocaCStr(key))
+	if ret != nil {
+		return c.GoString(ret), true
+	}
+	return "", false
+}
+
+func Getpid() (pid int) {
+	return int(os.Getpid())
+}
+
+func Kill(pid int, signum Signal) (err error) {
+	ret := os.Kill(c.Int(pid), c.Int(signum))
+	if ret == 0 {
+		return nil
+	}
+	return Errno(os.Errno)
+}
+
+func Open(path string, mode int, perm uint32) (fd int, err error) {
+	ret := os.Open(c.AllocaCStr(path), c.Int(mode), os.ModeT(perm))
+	if ret >= 0 {
+		return int(ret), nil
+	}
+	return 0, Errno(os.Errno)
+}
+
+func Seek(fd int, offset int64, whence int) (newoffset int64, err error) {
+	ret := os.Lseek(c.Int(fd), os.OffT(offset), c.Int(whence))
+	if ret >= 0 {
+		return int64(ret), nil
+	}
+	return -1, Errno(os.Errno)
+}
+
+func Read(fd int, p []byte) (n int, err error) {
+	ret := os.Read(c.Int(fd), unsafe.Pointer(unsafe.SliceData(p)), uintptr(len(p)))
+	if ret >= 0 {
+		return ret, nil // TODO(xsw): confirm err == nil (not io.EOF) when ret == 0
+	}
+	return 0, Errno(os.Errno)
+}
+
+func Close(fd int) (err error) {
+	ret := os.Close(c.Int(fd))
+	if ret == 0 {
+		return nil
+	}
+	return Errno(os.Errno)
 }

internal/lib/syscall/syscall_unix.go

@@ -57,3 +57,22 @@ func (e Errno) Temporary() bool {
 func (e Errno) Timeout() bool {
 	return e == EAGAIN || e == EWOULDBLOCK || e == ETIMEDOUT
 }
+
+// A Signal is a number describing a process signal.
+// It implements the os.Signal interface.
+type Signal int
+
+func (s Signal) Signal() {}
+
+func (s Signal) String() string {
+	/*
+		if 0 <= s && int(s) < len(signals) {
+			str := signals[s]
+			if str != "" {
+				return str
+			}
+		}
+		return "signal " + itoa.Itoa(int(s))
+	*/
+	panic("todo: syscall.Signal.String")
+}

internal/lib/syscall/zerrors_darwin.go

@@ -127,3 +127,39 @@ const (
 	EWOULDBLOCK     = Errno(0x23)
 	EXDEV           = Errno(0x12)
 )
+
+// Signals
+const (
+	SIGABRT   = Signal(0x6)
+	SIGALRM   = Signal(0xe)
+	SIGBUS    = Signal(0xa)
+	SIGCHLD   = Signal(0x14)
+	SIGCONT   = Signal(0x13)
+	SIGEMT    = Signal(0x7)
+	SIGFPE    = Signal(0x8)
+	SIGHUP    = Signal(0x1)
+	SIGILL    = Signal(0x4)
+	SIGINFO   = Signal(0x1d)
+	SIGINT    = Signal(0x2)
+	SIGIO     = Signal(0x17)
+	SIGIOT    = Signal(0x6)
+	SIGKILL   = Signal(0x9)
+	SIGPIPE   = Signal(0xd)
+	SIGPROF   = Signal(0x1b)
+	SIGQUIT   = Signal(0x3)
+	SIGSEGV   = Signal(0xb)
+	SIGSTOP   = Signal(0x11)
+	SIGSYS    = Signal(0xc)
+	SIGTERM   = Signal(0xf)
+	SIGTRAP   = Signal(0x5)
+	SIGTSTP   = Signal(0x12)
+	SIGTTIN   = Signal(0x15)
+	SIGTTOU   = Signal(0x16)
+	SIGURG    = Signal(0x10)
+	SIGUSR1   = Signal(0x1e)
+	SIGUSR2   = Signal(0x1f)
+	SIGVTALRM = Signal(0x1a)
+	SIGWINCH  = Signal(0x1c)
+	SIGXCPU   = Signal(0x18)
+	SIGXFSZ   = Signal(0x19)
+)

internal/lib/syscall/zerrors_linux.go

@@ -152,3 +152,42 @@ const (
 	EXDEV           = Errno(0x12)
 	EXFULL          = Errno(0x36)
 )
+
+// Signals
+const (
+	SIGABRT   = Signal(0x6)
+	SIGALRM   = Signal(0xe)
+	SIGBUS    = Signal(0x7)
+	SIGCHLD   = Signal(0x11)
+	SIGCLD    = Signal(0x11)
+	SIGCONT   = Signal(0x12)
+	SIGFPE    = Signal(0x8)
+	SIGHUP    = Signal(0x1)
+	SIGILL    = Signal(0x4)
+	SIGINT    = Signal(0x2)
+	SIGIO     = Signal(0x1d)
+	SIGIOT    = Signal(0x6)
+	SIGKILL   = Signal(0x9)
+	SIGPIPE   = Signal(0xd)
+	SIGPOLL   = Signal(0x1d)
+	SIGPROF   = Signal(0x1b)
+	SIGPWR    = Signal(0x1e)
+	SIGQUIT   = Signal(0x3)
+	SIGSEGV   = Signal(0xb)
+	SIGSTKFLT = Signal(0x10)
+	SIGSTOP   = Signal(0x13)
+	SIGSYS    = Signal(0x1f)
+	SIGTERM   = Signal(0xf)
+	SIGTRAP   = Signal(0x5)
+	SIGTSTP   = Signal(0x14)
+	SIGTTIN   = Signal(0x15)
+	SIGTTOU   = Signal(0x16)
+	SIGUNUSED = Signal(0x1f)
+	SIGURG    = Signal(0x17)
+	SIGUSR1   = Signal(0xa)
+	SIGUSR2   = Signal(0xc)
+	SIGVTALRM = Signal(0x1a)
+	SIGWINCH  = Signal(0x1c)
+	SIGXCPU   = Signal(0x18)
+	SIGXFSZ   = Signal(0x19)
+)