php.go

// Copyright 2011 Xing Xing <mikespook@gmail.com> All rights reserved.
// Use of this source code is governed by a MIT
// license that can be found in the LICENSE file.

package php

//go:generate ./gen.sh

// #include "php_embed.h"
import "C"

import (
	"errors"
	"os"
	"reflect"
	"syscall"
)

const (
	Success = 0
	Failure = -1
)

var (
	ErrInvalidType  = errors.New("Invalide type")
	ErrInvalidValue = errors.New("Invalide value")
)

type PHP struct {
	stdout, stderr *os.File
	inifile        string
}

func New() (php *PHP) {
	php = &PHP{
		stdout: os.Stdout,
		stderr: os.Stderr,
	}
	return
}

func (php *PHP) Unset(name string) {
	C.php_unset(C.CString(name))
}

func (php *PHP) Array(name string, value map[string]string) {
	z := C.php_array_init()
	for k, v := range value {
		C.php_array_add(z, C.CString(k), C.CString(v))
	}
	C.php_array_end(z, C.CString(name))
}

func (php *PHP) Var(name string, value interface{}) (err error) {
	t := reflect.TypeOf(value)
	switch t.Kind() {
	case reflect.Bool:
		var b C.int
		if value.(bool) {
			b = 1
		} else {
			b = 0
		}
		C.php_add_var_bool(C.CString(name), b)
	case reflect.Int, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int8,
		reflect.Uint, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint8:
		C.php_add_var_long(C.CString(name), C.long(value.(int)))
	case reflect.Float32, reflect.Float64:
		C.php_add_var_double(C.CString(name), C.double(value.(float64)))
	case reflect.String:
		C.php_add_var_str(C.CString(name), C.CString(value.(string)))
	default:
		err = ErrInvalidType
	}
	return
}

func (php *PHP) Stdout(f *os.File) {
	php.stdout = f
}

func (php *PHP) Stderr(f *os.File) {
	php.stderr = f
}

func (php *PHP) IniFile(ini string) {
	php.inifile = ini
}

func (php *PHP) Startup() {
	// #TODO issue #8
	// We should not use syscall for this purpose,
	// it will affect whole app's output.
	syscall.Dup2(int(php.stdout.Fd()), 1)
	syscall.Dup2(int(php.stderr.Fd()), 2)
	C.php_set_ini(C.CString(php.inifile))
	C.php_startup()
}

func (php *PHP) Exec(filepath string) (err error) {
	if _, err = os.Stat(filepath); err != nil {
		return
	}
	if err := C.php_exec_file(C.CString(filepath)); err != nil {
		return errors.New(C.GoString(err))
	}
	return
	//return php.Eval("require('" + filepath + "');")
}

func (php *PHP) Eval(script string) (err error) {
	if err := C.php_eval_script(C.CString(script)); err != nil {
		return errors.New(C.GoString(err))
	}
	return
}

func (php *PHP) Close() {
	C.php_shutdown()
}