// file: $isip/class/shell/Sdb/sdb_04.cc // version: $Id: sdb_04.cc,v 1.5 2001/04/24 15:28:11 peng Exp $ // // isip include files // #include "Sdb.h" // method: sofSize // // arguments: none // // return: size of object as written to disk via the i/o methods // // this method determines the size of the object on disk // long Sdb::sofSize() const { // declare temporary variables // long new_size; new_size = files_d.sofSize(); // exit gracefully // return new_size; } // method: write // // arguments: // Sof& sof: (input) sof file object // long tag: (input) sof object instance tag // const String& name: (input) sof object instance name // // return: a boolean value indicating status // // this method has the object write itself to an Sof file // boolean Sdb::write(Sof& sof_a, long tag_a, const String& name_a) const { // declare local variables // long obj_size; // set the object size to be "-1" in case of text and sofSize in // case of binary files // if (sof_a.isText()) { obj_size = Sof::ANY_SIZE; } else { obj_size = sofSize(); } // put the object into the sof file's index // if (!sof_a.put(name_a, tag_a, obj_size)) { return false; } // exit gracefully // return writeData(sof_a); } // method: writeData // // arguments: // Sof& sof: (input) sof file object // const String& pname: (input) parameter name // // return: a boolean value indicating status // // this method has the object write itself to an Sof file. it assumes // that the Sof file is already positioned correctly. // boolean Sdb::writeData(Sof& sof_a, const String& pname_a) const { // different for text or binary -- text mode will write out the // files one per line. // if (sof_a.isText()) { Filename new_file; String buffer; String newline(L"\n"); // use the mark to preserve location // const_cast(this)->files_d.setMark(); if (const_cast(this)->files_d.gotoFirst()) { do { const Filename* ptr = &(files_d.getCurr()->first()); if (!sof_a.puts(*ptr)) { return Error::handle(name(), L"writeData", Error::WRITE, __FILE__, __LINE__, Error::WARNING); return false; } if (!sof_a.puts(newline)) { return Error::handle(name(), L"writeData", Error::WRITE, __FILE__, __LINE__, Error::WARNING); return false; } } while (const_cast(this)->files_d.gotoNext()); } // restore location with the mark // const_cast(this)->files_d.gotoMark(); } // for binary files use standard Sof // else { files_d.writeData(sof_a, pname_a); } // exit gracefully // return true; }
