/* * Copyright 2011 Perforce Software. All rights reserved. * * This file is part of Perforce - the FAST SCM System. */ # include # include # include # include # include # include "filestrbuf.h" FileStrPtr::FileStrPtr( StrPtr *s ) { ptr = s; offset = 0; } void FileStrPtr::Open( FileOpenMode mode, Error *e ) { if( mode == FOM_WRITE ) e->Set( E_FATAL, "can't write to a FileStrPtr!" ); offset = 0; } int FileStrPtr::Read( char *buf, int len, Error * ) { if( len < 1 ) return 0; int avail = ptr->Length() - offset; // Already read everything? if( avail < 1 ) return 0; // Asked to read more than we have? if( avail < len ) { memcpy( buf, ptr->Value() + offset, avail ); offset = ptr->Length(); return avail; } // Asked to read less than we have? memcpy( buf, ptr->Value() + offset, len ); offset += len; return len; } offL_t FileStrPtr::GetSize() { return ptr->Length(); }