Method ComposeStructFieldPath

xmpsdk/src/XMPUtils.cpp:744–774

class static */

// Return "structName/ns:fieldName".

/* class static */ void
XMPUtils::ComposeStructFieldPath ( XMP_StringPtr   schemaNS,
								   XMP_StringPtr   structName,
								   XMP_StringPtr   fieldNS,
								   XMP_StringPtr   fieldName,
								   XMP_StringPtr * fullPath,
								   XMP_StringLen * pathSize )
{
	XMP_Assert ( (schemaNS != 0) && (fieldNS != 0) );		// Enforced by wrapper.
	XMP_Assert ( (*structName != 0) && (*fieldName != 0) ); // Enforced by wrapper.
	XMP_Assert ( (fullPath != 0) && (pathSize != 0) );		// Enforced by wrapper.

	XMP_ExpandedXPath expPath;	// Just for side effects to check namespace and basic path.
	ExpandXPath ( schemaNS, structName, &expPath );

	XMP_ExpandedXPath fieldPath;
	ExpandXPath ( fieldNS, fieldName, &fieldPath );
	if ( fieldPath.size() != 2 ) XMP_Throw ( "The fieldName must be simple", kXMPErr_BadXPath );

	XMP_StringLen reserveLen = strlen(structName) + fieldPath[kRootPropStep].step.size() + 1;

	sComposedPath->erase();
	sComposedPath->reserve ( reserveLen );
	*sComposedPath = structName;
	*sComposedPath += '/';
	*sComposedPath += fieldPath[kRootPropStep].step;

	*fullPath = sComposedPath->c_str();
	*pathSize = sComposedPath->size();

}	// ComposeStructFieldPath


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