Zabbix

/*

** Zabbix

** Copyright (C) 2001-2025 Zabbix SIA

**

** This program is free software; you can redistribute it and/or modify

** it under the terms of the GNU General Public License as published by

** the Free Software Foundation; either version 2 of the License, or

** (at your option) any later version.

**

** This program is distributed in the hope that it will be useful,

** but WITHOUT ANY WARRANTY; without even the implied warranty of

** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

** GNU General Public License for more details.

**

** You should have received a copy of the GNU General Public License

** along with this program; if not, write to the Free Software

** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

**/

​

package file

​

//#include <iconv.h>

//#include <stdlib.h>

//size_t call_iconv(iconv_t cd, char *inbuf, size_t *inbytesleft, char *outbuf, size_t *outbytesleft) {

//   return iconv(cd, &inbuf, inbytesleft, &outbuf, outbytesleft);

// }

//

// #cgo windows LDFLAGS: -liconv

import "C"

​

import (

    "syscall"

    "unsafe"

​

    "golang.zabbix.com/sdk/log"

)

​

func findEncodingFromBOM(encoding string, inbuf []byte, bytecount int) string {

    /* try to guess encoding using Byte Order Mark (BOM) if it exists */

    if "" == encoding {

        if bytecount > 3 && 0xef == inbuf[0] && 0xbb == inbuf[1] && 0xbf == inbuf[2] {

            encoding = "UTF-8"

        } else if bytecount > 2 && 0xff == inbuf[0] && 0xfe == inbuf[1] {

            encoding = "UTF-16LE"

        } else if bytecount > 2 && 0xfe == inbuf[0] && 0xff == inbuf[1] {

            encoding = "UTF-16BE"

        }

    }

​

    return encoding

}

​

func decodeToUTF8(encoding string, inbuf []byte, bytecount int) (outbuf []byte, outbytecount int) {

    if bytecount == 0 {

        return inbuf, 0

    }

    if encoding == "" {

        return inbuf, bytecount

    }

    tocode := C.CString("UTF-8")

    log.Tracef("Calling C function \"free()\"")

    defer C.free(unsafe.Pointer(tocode))

    fromcode := C.CString(encoding)