《CHM格式分析及优化》-毕业论文.doc

HUNAN UNIVERSITY 毕业设计(论文) 设计论文题目： CHM格式分析及优化 摘 要 随着信息技术的发展，个人计算机越来越普及。人们也越来越多的利用计算机方便自己的生活。人们在计算机上阅读的需求也日益增长。其中CHM就是一种非常普及广泛的电子书籍格式。另一方面，随着个人掌上电脑，智能手机的发展，人们也花费更多的时间阅读电子书籍。但移动设备的处理能力离PC尚有较大的差距，因此如何快速有效的解析CHM格式电子书籍是移动设备上阅读软件的需求。 本课题研究的目的在于为PC和移动设备平台提供CHM电子书籍的解析功能。在充分分析CHM格式规范的基础上，比较各种主流解析CHM方法，在CHM阅读器性能方面进行优化分析和处理。 难点：该课题主要的难点在于如何分析CHM的格式的各个部分,特别是在无微软官方格式说明的情况下。如何兼容各种版本的CHM格式文件也是一项艰巨的任务。同时，对应于手机移动设备的特殊硬件条件，如何使程序占用极少的内存的同时以快速的方式解析文件，为用户提供流畅的阅读体验是本课题的重点。 关键词：CHM，手机移动设备，解析 The analysis and optimization on CHM Abstract With the development of information technology, personal computers becoming increasingly popular. More and more people are using computers to facilitate their lives, such as reading books. CHM, which is a very popular format for a wide range of e-books. On the other hand, the number of PC and smart mobile device stepping into human’s lives grows day by day, people will spend more time reading e-books. However, there’s a huge gap between the processing power of mobile devices and PC’s, so the solution about how to resolve CHM quickly and efficiently on mobile devices is the most need. The system’s purpose is to provide the parsing CHM function for the PC and mobile device platform. Certainly, it’s based on a full analysis on the CHM format specification, comparing numbers of main CHM parsing methods. More work is attached on CHM parser’s performance optimization. Difficulties: The main difficulty lies in how to analyze all parts of CHM format, especially on the situation of no formal Microsoft CHM specification. How to support various CHM versions is also an uneasy task. At the same time, corresponding to the special mobile hardware condition, how to force the system to use least memory but to run the parsing process most quickly, providing smooth reading experience is this subject’s key point. Key words: CHM, mobile phone equipment, parse 目录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc231267022 1. 绪论 PAGEREF _Toc231267022 \h 1 HYPERLINK \l _Toc23126702