Wrapped a bunch of stuff just because I could

cgo.c

@@ -18,4 +18,8 @@ int vm_create_function(ph7_vm *pVm, const char *zName, void *pUserData) {
 
 int vm_config_err_report(ph7_vm *pVm) {
 	return ph7_vm_config(pVm, PH7_VM_CONFIG_ERR_REPORT);
-}
+}
+
+int vm_output_length(ph7_vm *pVm, unsigned int *pLength) {
+	return ph7_vm_config(pVm, PH7_VM_OUTPUT_LENGTH, pLength);
+}

cgo.h

@@ -4,6 +4,7 @@
 int engine_config_err_log(ph7 *pEngine, const char **pzPtr, int *pLen);
 int vm_extract_output(ph7_vm *pVm, const char **pzPtr, int *pLen);
 int vm_config_err_report(ph7_vm *pVm);
+int vm_output_length(ph7_vm *pVm, unsigned int *pLength);
 
 extern int write_vm_output(void*, unsigned int, void*);
 int vm_set_output_callback(ph7_vm *pVm, void *pUserData);

ph7.go

@@ -192,7 +192,26 @@ func (c *Context) ResultString(s string) error {
 	return newError(C.ph7_result_string((*C.ph7_context)(c), cs, C.int(len(s))))
 }
 
-// TODO (*Context).ResultStringFormat maybe? Or just use fmt.Sprint*.
+type resultWriter Context
+
+func (rw *resultWriter) Write(p []byte) (int, error) {
+	cp := C.CBytes(p)
+	defer C.free(cp)
+	err := newError(C.ph7_result_string(
+		(*C.ph7_context)(rw),
+		(*C.char)(cp),
+		C.int(len(p))))
+	if err != nil {
+		return 0, err
+	}
+	return len(p), nil
+}
+
+func (c *Context) ResultWriter() io.Writer {
+	return (*resultWriter)(c)
+}
+
+// ph7_result_string_format is redundant when we have fmt.Sprintf and fmt.Fprintf.
 
 func (c *Context) ResultValue(value *Value) error {
 	return newError(C.ph7_result_value((*C.ph7_context)(c), (*C.ph7_value)(value)))
@@ -200,16 +219,25 @@ func (c *Context) ResultValue(value *Value) error {
 
 // TODO (*Context).ResultResource
 
-func (c *Context) Write(p []byte) (int, error) {
+type outputWriter Context
+
+func (ow *outputWriter) Write(p []byte) (int, error) {
 	cp := C.CBytes(p)
 	defer C.free(cp)
-	err := newError(C.ph7_context_output((*C.ph7_context)(c), (*C.char)(cp), C.int(len(p))))
+	err := newError(C.ph7_context_output(
+		(*C.ph7_context)(ow),
+		(*C.char)(cp),
+		C.int(len(p))))
 	if err != nil {
 		return 0, err
 	}
 	return len(p), nil
 }
 
+func (c *Context) OutputWriter() io.Writer {
+	return (*outputWriter)(c)
+}
+
 type Severity int
 
 const (
@@ -225,7 +253,7 @@ func (c *Context) ThrowError(severity Severity, msg string) error {
 	return newError(C.ph7_context_throw_error((*C.ph7_context)(c), C.int(severity), cmsg))
 }
 
-// TODO (*Context).ThrowErrorFormat maybe?
+// ph7_context_throw_error_format is redundant when we have fmt.Sprintf.
 
 func (c *Context) RandomNum() uint {
 	return uint(C.ph7_context_random_num((*C.ph7_context)(c)))
@@ -246,7 +274,10 @@ func (c *Context) RandomString(length int) (string, error) {
 // TODO (*Context).PushAuxData
 // TODO (*Context).PeekAuxData
 // TODO (*Context).PopAuxData
-// TODO (*Context).ResultBufLength
+
+func (c *Context) ResultBufLength() uint {
+	return uint(C.ph7_context_result_buf_length((*C.ph7_context)(c)))
+}
 
 func (c *Context) FunctionName() string {
 	return C.GoString(C.ph7_function_name((*C.ph7_context)(c)))
@@ -258,6 +289,8 @@ func (c *Context) FunctionName() string {
 
 type Value C.ph7_value
 
+// TODO Make *Value a fmt.Formatter, or at least a Stringer.
+
 func (v *Value) ToInt() int {
 	return int(C.ph7_value_to_int((*C.ph7_value)(v)))
 }
@@ -290,16 +323,58 @@ func (v *Value) CompareStrict(v2 *Value) int {
 	return int(C.ph7_value_compare((*C.ph7_value)(v), (*C.ph7_value)(v2), 1))
 }
 
-// TODO (*Value).Int
+func (v *Value) Int(n int) error {
-// TODO (*Value).Int64
+	return newError(C.ph7_value_int((*C.ph7_value)(v), C.int(n)))
-// TODO (*Value).Bool
+}
-// TODO (*Value).Null
+
-// TODO (*Value).Double
+func (v *Value) Int64(n int64) error {
-// TODO (*Value).String
+	return newError(C.ph7_value_int64((*C.ph7_value)(v), C.ph7_int64(n)))
-// TODO (*Value).StringFormat maybe?
+}
-// TODO (*Value).ResetStringCursor
+
+func (v *Value) Bool(b bool) error {
+	var cb C.int
+	if b {
+		cb = 1
+	}
+	return newError(C.ph7_value_bool((*C.ph7_value)(v), cb))
+}
+
+func (v *Value) Null() error {
+	return newError(C.ph7_value_null((*C.ph7_value)(v)))
+}
+
+func (v *Value) Double(d float64) error {
+	return newError(C.ph7_value_double((*C.ph7_value)(v), C.double(d)))
+}
+
+func (v *Value) String(s string) error {
+	cstr := C.CString(s)
+	defer C.free(unsafe.Pointer(cstr))
+	return newError(C.ph7_value_string(
+		(*C.ph7_value)(v),
+		cstr,
+		C.int(len(s))))
+}
+
+func (v *Value) Write(p []byte) error {
+	cp := C.CBytes(p)
+	defer C.free(cp)
+	return newError(C.ph7_value_string(
+		(*C.ph7_value)(v),
+		(*C.char)(cp),
+		C.int(len(p))))
+}
+
+func (v *Value) ResetStringCursor() error {
+	return newError(C.ph7_value_reset_string_cursor((*C.ph7_value)(v)))
+}
+
 // TODO (*Value).Resource
-// TODO (*Value).Release
+
+func (v *Value) Release() error {
+	return newError(C.ph7_value_release((*C.ph7_value)(v)))
+}
+
 // TODO (*Value).ArrayFetch
 // TODO (*Value).ArrayWalk
 // TODO (*Value).ArrayAddElem
@@ -360,18 +435,36 @@ func (v *Value) IsEmpty() bool {
 
 // ph7_lib_init is unnecessary when single-threaded, and possibly always.
 // TODO Config
-// TODO Shutdown
+
-// TODO IsThreadsafe
+func Shutdown() error {
-// TODO Version
+	return newError(C.ph7_lib_shutdown())
-// TODO Signature
+}
-// TODO Ident
+
-// TODO Copyright
+func IsThreadsafe() bool {
+	return C.ph7_lib_is_threadsafe() != 0
+}
+
+func Version() string {
+	return C.GoString(C.ph7_lib_version())
+}
+
+func Signature() string {
+	return C.GoString(C.ph7_lib_signature())
+}
+
+func Ident() string {
+	return C.GoString(C.ph7_lib_ident())
+}
+
+func Copyright() string {
+	return C.GoString(C.ph7_lib_copyright()) +
+		"\ngo-ph7 by Brandon Dyck. Do whatever the hell you want with it."
+}
 
 type VM struct {
-	ptr          *C.ph7_vm
+	ptr              *C.ph7_vm
-	pointerKey   unsafe.Pointer
+	pointerKey       unsafe.Pointer
-	outputWriter io.Writer
+	outputWriter     io.Writer
-	// TODO clear outputWriteError when resetting VM
 	outputWriteErr   error
 	userFunctionKeys []unsafe.Pointer
 }
@@ -401,6 +494,13 @@ func (vm *VM) SetOutputWriter(w io.Writer) error {
 
 // TODO PH7_VM_CONFIG_IMPORT_PATH
 // TODO PH7_VM_CONFIG_RECURSION_DEPTH
+
+func (vm *VM) OutputLength() (uint, error) {
+	var n C.uint
+	err := newError(C.vm_output_length(vm.ptr, &n))
+	return uint(n), err
+}
+
 // TODO PH7_VM_CONFIG_CREATE_SUPER
 // TODO PH7_VM_CONFIG_CREATE_VAR
 // TODO PH7_VM_CONFIG_HTTP_REQUEST
@@ -414,7 +514,6 @@ func (vm *VM) SetOutputWriter(w io.Writer) error {
 // TODO PH7_VM_CONFIG_EXEC_VALUE
 // TODO PH7_VM_CONFIG_IO_STREAM
 // TODO PH7_VM_CONFIG_ARGV_ENTRY
-// TODO PH7_VM_CONFIG_EXTRACT_OUTPUT
 // TODO PH7_VM_CONFIG_ERR_LOG_HANDLER
 
 // TODO (*VM).Dump(w io.Writer)
@@ -445,6 +544,7 @@ func (vm *VM) Exec() error {
 }
 
 func (vm *VM) Reset() error {
+	vm.outputWriteErr = nil
 	return newError(C.ph7_vm_reset(vm.ptr))
 }
 

ph7_test.go

@@ -168,7 +168,7 @@ func TestContextWrite(t *testing.T) {
 	var written int
 	f := func(ctx *ph7.Context) error {
 		var err error
-		written, err = ctx.Write([]byte(s))
+		written, err = ctx.OutputWriter().Write([]byte(s))
 		return err
 	}
 
@@ -204,7 +204,7 @@ func TestFunctionName(t *testing.T) {
 	defer close()
 
 	f := func(ctx *ph7.Context) error {
-		_, err := fmt.Fprint(ctx, ctx.FunctionName())
+		_, err := fmt.Fprint(ctx.OutputWriter(), ctx.FunctionName())
 		return err
 	}
 	mustSucceed(t, vm.CreateFunction("doStuff", CtxFunc(f)))