Research And Application Of Technologies Of Postscript File Parse

Recently, electronic publishing has been become a fast developing branch of publish trade and is replacing some traditional publish method with the new characteristic of that such as networked and so on. A lot of publications have adopted electronic publishing as a auxiliary method, even as the main method. Additionally, the computer network is much popularity than before so that the electronic publishing is favored by lots of person. Many publishers and third parties software vendors are showing solicitude for the important technology research and application of the domain of electronic publishing.Currently, the publish procedure of the electronic publishing could be divided into three steps. First, parse the page description file in order to get the page date of the source file. Second, edit the page data to reduce the page format. Finally, save the data and transfer to correlative database and ftp-server to publish the electronic news or magazine and so on. Actually, the display way of the final page data could be in many approach such as exe file, FLASH file,a website method and so forth.One of the key steps of the procedure of electronic publishing is parsing the page description file to get the page data. Right now, the most popular page description file is PostScript file presented by Adobe cooperation which is actually a file record the page information described by PostScript language. The language is used to record the page information which include text information, graphic information and so on. Therefore, the page data of the PostScript file could be extracted and generate the page which need to print if the PostScript file could be parsed correctly.This issue regard the normal and especial PostScript file as the main research object. After researching and analyzing on the relevant area of algorithms and techniques, a new PostScript file parse and data extract method is put forward which include a series of algorithm about text extracting, graphic extracting and information association. Finally, a well PostScript file parse system is designed and realized.The PostScript file parse algorithm of this issue include every aspect of PostScript file parse technology such as text extracting, graphic extracting and coordinate transform and so on. The PostScript file parse system is designed with Object-oriented design method and could be divided into many function modules. The technology about dictionary and memory map technology and so on are used so that the system is well-designed and high-performance. Finally, enlightening value of the issue is presented in correspondent technology about PostScript file and other page describe file parse technology.