p4specdata.cpp #1

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/*******************************************************************************
 * Name		: p4specdata.cpp
 *
 * Author	: Tony Smith <tony@perforce.com> or <tony@smee.org>
 *
 * Description	: Perl bindings for the Perforce API. SpecData subclass for
 * 		  P4Perl. This class allows for manipulation of Spec data
 * 		  stored in a Perl hash using the standard Perforce classes
 *
 ******************************************************************************/

#include <clientapi.h>
#include <spec.h>
#include "perlheaders.h"
#include "p4perldebug.h"
#include "p4specdata.h"

//
// We're expecting a blessed hashref, but we only need to store the 
// underlying HV
//
SpecDataPerl::SpecDataPerl( SV * h )
{
    if( !SvROK( h ) || SvTYPE( SvRV( h ) ) != SVt_PVHV )
    {
	warn( "Not a P4::Spec object. Ignoring..." );
	hash = 0;
	return;
    }
    hash = (HV*) SvRV( h );
}

SpecDataPerl::SpecDataPerl( HV * h )
{
    hash = h;
}
    
StrPtr *
SpecDataPerl::GetLine( SpecElem *sd, int x, const char **cmt )
{
	*cmt = 0;
	SV * val;
	SV **svp;
	AV * av;
	StrBuf t;

	if( !hash )
	{
	   warn( "Can't fetch values from non-P4::Spec object." );
	   return 0;
	}

	svp = hv_fetch( hash, sd->tag.Text(), sd->tag.Length(), 0 );
	if( !svp ) return 0;

	val = *svp;

	if( !sd->IsList() )
	{
	    last = SvPV_nolen( val );
	    return &last;
	}

	// It's a list, which means we should have an array value here
	
    	if( !SvROK( val ) || SvTYPE( SvRV( val ) ) != SVt_PVAV )
	{
	    warn( "%s should be an array element. Ignoring...", 
		    sd->tag.Text() );
	    return 0;
	}

	av = (AV*) SvRV( val );
	svp = av_fetch( av, x, 0 );

	if( !svp ) return 0;
	if( !SvPOK( *svp ) )
	{
	    warn( "Cannot convert %s field to text. Ignoring...",
	       sd->tag.Text() );
	    return 0;
	}

	last = SvPV_nolen( *svp );
	return &last;
}

void	
SpecDataPerl::SetLine( SpecElem *sd, int x, const StrPtr *v, Error *e )
{
	SV ** 	svp;
	SV * 	key;
	SV *	val;
	AV *	av;
	SV *	rv;
	StrBuf	t;

	if( !hash ) 
	{
	    warn( "Can't store values in non P4::Spec object" );
	    return;
	}

	key = newSVpv( sd->tag.Text(), sd->tag.Length() );
	val = newSVpv( v->Text(), v->Length() );

	if( sd->IsList() )
	{
	    svp = hv_fetch( hash, sd->tag.Text(), sd->tag.Length(), 0 );
	    if( !svp )
	    {
		av = newAV();
		rv = newRV_noinc( (SV*) av );
		hv_store( hash, sd->tag.Text(), sd->tag.Length(), (SV*)rv, 0);
	    }
	    else if( !SvROK( *svp ) || SvTYPE( SvRV( *svp ) ) != SVt_PVAV )
	    {
		warn( "%s: not an array reference.", sd->tag.Text() );
		return;
	    }
	    else
	    {
		av = (AV*) SvRV( *svp );
	    }

	    av_store( av, x, val );
	}
	else
	{
	    hv_store( hash, sd->tag.Text(), sd->tag.Length(), val, 0 );
	}
	return;
}