67 lines
1.8 KiB
Go
67 lines
1.8 KiB
Go
/*
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Wraps the iconv API present on most systems, which allows for conversion
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of bytes from one encoding to another. This package additionally provides
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some convenient interface implementations like a Reader and Writer.
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*/
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package iconv
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/*
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#include <errno.h>
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*/
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import "C"
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import "os"
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// Alias os.Error for convenience
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type Error os.Error
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// Error codes returned from iconv functions
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var (
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E2BIG Error = os.Errno(int(C.E2BIG))
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EBADF Error = os.Errno(int(C.EBADF))
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EINVAL Error = os.Errno(int(C.EINVAL))
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EILSEQ Error = os.Errno(int(C.EILSEQ))
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ENOMEM Error = os.Errno(int(C.ENOMEM))
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)
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// All in one Convert method, rather than requiring the construction of an iconv.Converter
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func Convert(input []byte, output []byte, fromEncoding string, toEncoding string) (bytesRead int, bytesWritten int, err Error) {
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// create a temporary converter
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converter, err := NewConverter(fromEncoding, toEncoding)
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if err == nil {
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// call converter's Convert
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bytesRead, bytesWritten, err = converter.Convert(input, output)
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if err == nil {
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var shiftBytesWritten int
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// call Convert with a nil input to generate any end shift sequences
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_, shiftBytesWritten, err = converter.Convert(nil, output[bytesWritten:])
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// add shift bytes to total bytes
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bytesWritten += shiftBytesWritten
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}
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// close the converter
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converter.Close()
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}
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return
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}
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// All in one ConvertString method, rather than requiring the construction of an iconv.Converter
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func ConvertString(input string, fromEncoding string, toEncoding string) (output string, err Error) {
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// create a temporary converter
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converter, err := NewConverter(fromEncoding, toEncoding)
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if err == nil {
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// convert the string
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output, err = converter.ConvertString(input)
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// close the converter
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converter.Close()
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}
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return
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}
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