cwbNL_ConvertCodePagesEx

Purpose

Convert strings from one code page to another. This API combines the following three converter APIs for the default conversion:

• cwbNL_CreateConverterEx
• cwbNL_Convert
• cwbNL_DeleteConverter

Parameters

unsigned long sourceCodePage - input

Code page of the data in the source buffer.

unsigned long targetCodePage - input

Code page to which the data should be converted.

unsigned long sourceLength - input.

Length of the source buffer

unsigned long targetLength - input.

Length of the target buffer

char *sourceBuffer - input

Buffer containing the data to convert.

char *targetBuffer - output

Buffer to contain the converted data.

unsigned long *numberOfErrors - output

Contains the number of characters that could not be converted properly.

unsigned long *positionOfFirstError - output

Contains the offset of the first character in the source buffer that could not be converted properly.

unsigned long *requiredLen - output

Actual length of the result. If requiredLen > resultLen, the return value will be CWB_BUFFER_OVERFLOW.

cwbSV_ErrHandle errorHandle - output

Handle to an error object. Any returned messages will be written to this object. It is created with the cwbSV_CreateErrHandle API. The messages may be retrieved with the cwbSV_GetErrText API. If the parameter is set to zero, no messages will be retrievable.

Return Codes

The following list shows common return values.

CWB_OK

Successful completion.

CWB_INVALID_HANDLE

Invalid handle.

CWB_INVALID_POINTER

NULL passed on output parameter.

CWBNL_ERR_CNV_UNSUPPORTED

An error occurred while attempting to convert the characters. No conversion was done. The most common reason is that a conversion table is missing. Conversion tables are either installed with the product, or retrieved from the default system when needed. There may have been some problem communicating with the default system.

CWBNL_ERR_CNV_ERR_STATUS

This return code is used to indicate that while the requested conversion is supported, and the conversion completed, there were some characters that did not convert properly. Either the source buffer contained null characters, or the characters do not exist in the target code page. Applications can choose to ignore this return code or treat it as a warning.

CWB_NOT_ENOUGH_MEMORY

Insufficient memory.

Usage

The following values may be specified on the sourceCodePage and the targetCodePage parameters: