CGI Introduction

Aug 13, 2010Download as PPT, PDF0 likes28,415 views

This document provides an introduction to CGI (Common Gateway Interface) and PERL for creating dynamic web pages. It discusses what CGI and PERL are, how to set up the necessary directories and permissions, and how to write a basic CGI script in PERL. Key steps include creating a cgi-bin directory, writing the script with a shebang line to call the PERL interpreter, using print statements to generate HTML output, and testing the script locally and on a server.

Introduction to CGI and PERL CISIWEB 434A

Basic Internet Technology Internet IP address Domain name World Wide Web HTML Web Server Browser URL Static Web Page Vs. Dynamic Web Page

CGI Common Gateway Interface Protocol that allows a server to communicate with CGI scripts Stored in a special directory (CGI-BIN) Can send information to and receive information from databases on the server Creates HTML as output to send to browser window PERL language is most widely used language (but not only language)

What is PERL? Practical Extraction and Report Language Most often used for creating CGI Interesting aside – the language was almost named “gloria” after the wife of Larry Wall, the programs inventor

What do you need? Computer running UNIX or windows Browser software Perl Interpreter A Web server that allows you to create, save, and execute CGI scripts Create your own server on your PC by installing apache or IIS Use an Internet Service Provider to host your site given that they support CGI Example: http://www.netfirms.com

Create the Bin and Set permissions Almost sounds like another language? Create a folder to put your files Commonly named cgi-bin Common gateway interface – binary UNIX mkdir cgi-bin Chmod should be set to 755 Owner can read(4), write(2), execute(1) Group and others can read and execute UNIX command chmod 755 cgi-bin

How to write a CGI Script First locate perl interpreter UNIX – usually /usr/bin/perl Windows – C:/Perl/bin/perl.exe Use a text editor to create your file – Notepad or wordpad in windows Start with shebang line # ( Sh arp) !(bang symbol) Location of the Perl Interpreter Ex: #!/usr/bin/perl

$Sample CGI code, pg 8 Shebang line Comment – starts with a # sign, will be ignored by the interpreter Interpreter sends information to the server which will send to the browser so results need to be in proper format for browser (html) Content-type header Print “Content-type: text/html\n\n”; Other types? text/plain or image/gif /n/n, ends the line, adds a blank line Ends with semi colon, completes the statement$

Use Perl to generate html Use Print to create statements with html strings Enclose html in quotes End statement with semi-colon

Getting the script to work on the server You have to send the script to the server using ftp Be sure to send the file as ascii Make sure the document is a text file with a cgi extension

Testing a script Testing locally using PERL interpreter Find a command prompt Change directory to cgi-bin Type perl –c file.cgi Perl starts the perl interpreter -c checks the syntax without executing File.cgi is the name of the text script created

Testing a script Testing the file on a server Run the file as http://yourservername/cgi-bin/file.cgi Press enter – browser submits the url to the server and runs the script which calls the interpreter to convert the instructions to machine code View page source, only the HTML is returned as a result of the PERL

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Serious games are games designed for purposes beyond pure entertainment, such as training, education, health, or social commentary. The document outlines several types of serious games, including training games, health games, social commentary games, advergames, educational games, and social awareness games. It suggests creating a concept for a serious game based on a newsworthy event to educate, train, make a social statement, or increase awareness on the topic.

Chapter 05Chaffey College

This chapter discusses how to create external classes in Java, including defining constructors and instance methods. It covers how to declare and initialize arrays, use counter-controlled for loops with assignment and unary operators, and implement layout managers. The chapter also presents a reservations program example to demonstrate these concepts, with classes for managing rooms and handling window events.

Chapter 04Chaffey College

This chapter discusses decision making and repetition structures in Java programs using reusable objects and methods. It covers if/else statements, logical operators, exceptions, try/catch blocks, while loops, switch statements, formatting numeric output, and creating user interfaces with checkboxes. The chapter includes examples of coding a sales commission calculator program as both a console application and applet to demonstrate these concepts.

Chapter 03Chaffey College

This chapter discusses manipulating data using methods in Java programming. It covers declaring and using primitive data types, handling user input with the BufferedReader class and readLine() method, converting strings to numbers, and using arithmetic, comparison, and conditional operators in expressions. The chapter also demonstrates building three versions of a body mass index calculator program: a console application using command prompt input/output, a Swing application with dialog boxes, and an interactive applet. It describes initializing components, handling events, and file management for Java programs.

The games factory 2 alien warsChaffey College

This document provides instructions for setting up and programming an alien wars game using The Games Factory 2 software. It describes how to initialize frames for the main menu, game, and high score screens. It then explains how to program events for playing music, moving between frames, initializing values, moving and destroying objects, checking for collisions, and displaying high scores. The document recommends using global variables, groups, and conditions to control game play, enemy movement, shooting, scoring, and transitioning between levels.

Target marketsChaffey College

This document discusses targeting specific market segments in video game development. It recommends thoroughly researching the target market through focus groups and consumer research to understand their abilities, preferences, and desires. This includes considering the market's reading level, cognitive abilities, learning style, and physical abilities to ensure the game is accessible. Targeting a niche market can increase sales but may decrease mass market appeal. Overall, developers must determine if targeting a segment is worthwhile versus aiming for the broader mass market.

Ch 8 introduction to data structuresChaffey College

Ch 8 data structures in aliceChaffey College

Alice has two built-in data structures: lists and arrays. Lists are ordered sets used to sequentially process objects, and can create queues. Arrays are indexed sets of variables like dancer[1], dancer[2] that store items like boxes. When deleting from a list, missing spots are filled in; when deleting from an array, empty variables are left behind. Lists are created by checking the "make a list" box, and can be manipulated with "For all in order" and "For all together" tiles. Arrays can be created similarly or using the Array Visualization object with properties and methods to manipulate elements.

Ch 7 recursionChaffey College

Recursion involves a method that calls itself directly or indirectly. This can be done linearly, where a method calls itself once, or exponentially, where it calls itself multiple times. Recursive algorithms can generate complex structures from simple instructions and are often more efficient than iterative approaches, though they require additional memory. Common examples of recursion in nature and mathematics are fractals, trees, and recursive algorithms used to generate structures like the Sierpinski triangle.

Intro to gmlChaffey College

GML (Game Maker Language) is the interpreted programming language used to enhance games created in Game Maker. It allows scripts to supplement, extend, or replace actions. Scripts are interpreted and compiled just before execution. The GML scripts editor assists in writing code and performs syntax checking. Scripts use statements, variables, constants, arrays, loops and conditional statements like IF to control program flow and add logic to games.

Power point unit dChaffey College

Power point unit cChaffey College

Power point unit bChaffey College

The document discusses various features for modifying presentations in Microsoft PowerPoint. It covers entering and formatting text, converting text to SmartArt graphics, inserting and editing shapes, aligning and grouping objects, adding slide headers and footers, and checking spelling. Some key points covered include using the outline tab to enter text, formatting text using options on the format tab, converting existing text to SmartArt graphics with a single click, modifying shapes using the drawing tools, and precisely positioning objects using alignment and grouping features.

Power point unit aChaffey College

PowerPoint allows users to create presentations with text, graphics, charts and other media. It is important to plan presentations by determining the message, audience, and needed materials like handouts or speaker notes. PowerPoint has different views for creating, editing and presenting slides, including Normal, Slide Sorter, Notes Page and Slide Show views. Design themes can be applied to give presentations a cohesive and customized look. Slides and other materials can be printed or output in various formats for on-screen, online or hard copy distribution.

GamegraphicsChaffey College

Graphics for games can be 2D or 3D and include menu screens, user interfaces, and in-game assets. Basic elements of images include pixels, resolution, aspect ratio, and colors which are described by properties like hue, saturation, and color depth. Images can be manipulated through operations like cut, copy, paste, and filters. Color theory principles around hue, value, temperature, and meaning are important to consider for graphics design. Proper use of light, shadow, visibility, and usability help ensure effective graphics in games.

GamesoundChaffey College

Game audio is important for creating atmosphere, enhancing gameplay and immersion. It uses various formats including FM synthesis, sampling, MIDI, and Redbook Audio on CDs. Sound effects provide feedback, cues and warnings while voiceovers deliver dialogue and narration. Music sets tone and provides cues, with differences between game and film scoring. It can be looping or adaptive and is created using tools like sampling or synthesis with no standardized process.

Ch 6 text and sound in aliceChaffey College

There are five ways to display text in Alice worlds: using the say and think primitive methods, using the print instruction, adding 3D text objects, adding billboard objects with text images, and placing sound using the play sound method. The say and think methods display character speech and thoughts, print displays text in the output area, 3D text adds titles, billboards display flat text images, and any object can play imported or recorded sounds. Text and sound objects can be manipulated through their properties and methods.

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CGI Introduction

1. Introduction to CGI and PERL CISIWEB 434A

2. Basic Internet Technology Internet IP address Domain name World Wide Web HTML Web Server Browser URL Static Web Page Vs. Dynamic Web Page

3. CGI Common Gateway Interface Protocol that allows a server to communicate with CGI scripts Stored in a special directory (CGI-BIN) Can send information to and receive information from databases on the server Creates HTML as output to send to browser window PERL language is most widely used language (but not only language)

4. What is PERL? Practical Extraction and Report Language Most often used for creating CGI Interesting aside – the language was almost named “gloria” after the wife of Larry Wall, the programs inventor

5. What do you need? Computer running UNIX or windows Browser software Perl Interpreter A Web server that allows you to create, save, and execute CGI scripts Create your own server on your PC by installing apache or IIS Use an Internet Service Provider to host your site given that they support CGI Example: http://www.netfirms.com

6. Create the Bin and Set permissions Almost sounds like another language? Create a folder to put your files Commonly named cgi-bin Common gateway interface – binary UNIX mkdir cgi-bin Chmod should be set to 755 Owner can read(4), write(2), execute(1) Group and others can read and execute UNIX command chmod 755 cgi-bin

7. How to write a CGI Script First locate perl interpreter UNIX – usually /usr/bin/perl Windows – C:/Perl/bin/perl.exe Use a text editor to create your file – Notepad or wordpad in windows Start with shebang line # ( Sh arp) !(bang symbol) Location of the Perl Interpreter Ex: #!/usr/bin/perl

8. Sample CGI code, pg 8 Shebang line Comment – starts with a # sign, will be ignored by the interpreter Interpreter sends information to the server which will send to the browser so results need to be in proper format for browser (html) Content-type header Print “Content-type: text/html\n\n”; Other types? text/plain or image/gif /n/n, ends the line, adds a blank line Ends with semi colon, completes the statement

9. Use Perl to generate html Use Print to create statements with html strings Enclose html in quotes End statement with semi-colon

10. Getting the script to work on the server You have to send the script to the server using ftp Be sure to send the file as ascii Make sure the document is a text file with a cgi extension

11. Testing a script Testing locally using PERL interpreter Find a command prompt Change directory to cgi-bin Type perl –c file.cgi Perl starts the perl interpreter -c checks the syntax without executing File.cgi is the name of the text script created

12. Testing a script Testing the file on a server Run the file as http://yourservername/cgi-bin/file.cgi Press enter – browser submits the url to the server and runs the script which calls the interpreter to convert the instructions to machine code View page source, only the HTML is returned as a result of the PERL

CGI Introduction

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