varlist.cpp #1

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#include "stdhdrs.h"
#include "strbuf.h"
#include "vararray.h"
#include "strdict.h"
#include "strtable.h"
#include "error.h"
#include "varlist.h"

//------------------------------------------------------------------------------
// VarList class implementation
//------------------------------------------------------------------------------


// Import variables from another VarList
void
VarList::Import( VarList *other )
{
    StrRef var, val;
    int i;

    for( i = 0; other->vars.GetVar( i, var, val ); i++ )
	vars.ReplaceVar( var.Text(), val.Text() );

}

//
// Export variables in this list to a VarArray of strings - ready for use in 
// environ.
//
void
VarList::Export( VarArray *va )
{
    StrRef var, val;
    StrBuf t;
    for( int i = 0; vars.GetVar( i, var, val ); i++ )
    {
	t.Clear();
	t << var << "=" << val;
	va->Put( strdup( t.Text() ) );
    }
}


// Set a variable
void
VarList::SetVar( const char *var, const char *val )
{
    if( vars.GetVar( var ) )
	vars.ReplaceVar( var, val );
    else
	vars.SetVar( var, val );
}

void
VarList::SetVar( StrPtr &var, StrPtr &val )
{
    SetVar( var.Text(), val.Text() );
}

// Get the value of a variable
StrPtr *
VarList::GetVar( const char *var )
{
    return vars.GetVar( var );
}

StrPtr *
VarList::GetVar( StrPtr &var )
{
    return GetVar( var.Text() );
}

void
VarList::DeleteVar( const char *var )
{
    vars.RemoveVar( var );
}

// Debugging
void
VarList::Dump()
{
    int i;
    StrRef	var, val;
    for( i = 0; vars.GetVar( i, var, val ); i++ )
	printf( "\t%s=%s\n", var.Text(), val.Text() );
}