Downloads

C code
Java
Perl
JavaScript
MQSeries

C code

Here are some C programs and modules for you to download.

alloc.c a module to make debugging malloc, calloc and free simpler. These 3 calls cause much grief in C programs, especially for the novice, because of overwriting the allocated size and freeing things twice. This module should help with debugging these problems.

child.c a module to make handling child processes under Unix much easier.

default.c a module to access a defaults file, similar in construction to those used in X-Windows.

dmpf.c a program that dumps any type of file in both hex and ASCII.

timer.c a module to allow multiple timers to coexist in a single Unix program. The code utilises a single realtime itimer to do this.

Java

classes.zip

This is a Zip file containing all the class files (and their sources) that have been used in this site. In the file are a bunch of others that are not used here, but I hope you find useful. I have used them elsewhere. Included are:

treeView
tabPanel
a whole bunch of AWT components
some utility classes
a progress / meter bar
the applets shown on the applets page

Perl

code_lines a script that counts real lines of C code, that is, ones that aren't blank or comments. Gives some interesting results.
fusr this is one that you system administrators might find useful. I wrote it to help me quickly get information out of the passwd and printcap files. Works well on SunOS but might require some modifications elsewhere.
show_jobs a handy little script to help digest the E-Mail job lists delivered by the JobServe service. It works interactively allowning you to apply filtering and save the jobs of interest to a file.
uujoin one of my first bits of perl. It attempts to decode a UU encoded file, handling multi-parts transparently, saving the contents to a file.

build_file.pl a very useful bit of Perl if your ISP does not support server-side include. Allows you to write template Web pages and have them pre-expanded on your your machine prior to uploading them in the normal manner. See the feature page here.
Persister.pm it is often useful to be able to see the structure of a complex Perl variable that is made up of hashes and arrays and so on. This is a handy static module to save, or presist, the contents of a variable, simple or complex in structure, to a file. The file can either be in Perl eval format or in XML. See the details here.

JavaScript

Floating Layers a JavaScript file that defines an object interface to help with floating divs on a page.

MQSeries

config.zip This zip file contains lex and yacc module code to enable the following example programs to read an ASCII file that contains configuration information and have it presented as a global structure.
write_to_q.c This program reads an ASCII file, line by line, turning each line into an MQSeries message. Each message is put onto the same queue. It demonstrates how to connect to a queue manager, open a queue, and put messages on a queue using the MQPUT call, and collect any replies generated. It uses the synchronous reply approach for simplicity.
read_from_q.c This program reads messages from a queue and optionally prints the contents. It can also be used to time how long it takes to read a given number of messages from a queue. It demonstrates the configuration file, the MQRC_NO_MSG_AVAILABLE constant, and the use of the MsgId and CorrelId message descriptor fields.
read_from_oracle.c This program periodically reads a hypothetical Oracle table and transfers the contents, row by row, as individual messages, to a queue. It demonstrates the configuration file, how to put messages on a queue, and how to mix embedded SQL and MQI calls in the same program.
write_to_oracle.c This program is started by a trigger manager. It gets messages from a queue and inserts them into a hypothetical Oracle table, each message being representing as a row in the table. It demonstrates the configuration file, the MQSET call to disable and re-enable triggering, the MQCMIT and MQBACK calls for unit of work control, how to wait for messages, and how to mix embedded SQL and MQI calls in the same program.