Cobol, Integrated Development Environment

COBOL (Common Business-Oriented Language), is a kind of old oriented-business programming language produced in the late 1960's. With the tremendous development of computer technology and COBOL's great evolution in recent years, The latest standard is finished, commonly known as COBOL2002 Standard in 2002. And, nowadays, most COBOL application software run in UNIX OS platform, but it brings much difficulties to develop and maintain of application software because of insufficiency of the corresponding development tools in UNIX environment. Therefore, providing the COBOL programmer with a convenient high-efficiency standards-supporting remote COBOL integrated development environment in UNIX could bring tremendous research signification and huge business value.The purpose of the thesis is to design and implement a COBOL program language integrated development environment based on client/sever architecture. The article would concentrates especially upon particular detailed description for several modules including service function, debug function, data transmission function, security certification function and file controlling function and so on in server terminal, with simple introduction of client terminal functionality. First, it analyzes the system architecture of the COBOL2002 IDE, designs the modules for Server terminal according to the top-to-bottom concept, carry out a network communication protocol in client/server terminal system based on TCP;and then through deep studying for PAM(Pluggable Authentication Modules) authentication principle and architecture, the requirement of the system certification functionality is meet. In the way of analyzing the file management module, making a clear conception of File Access Control Table(FCT) and Source File Library (SFL), detailed describing SFL interface implementation arithmetic, the flow of file operation of all kinds is implemented eventually. Finally, particular designing of debugging function module, basic function sub-module, sub-module calling relationship between each other is achieved.