IBM ASCII to EBCDIC conversion. Typical problem areas. Unicode Transformation Formats: UTF-8 & Co. The ISO 10646 Universal Character Set (UCS, Unicode) is a coded character set with more than 40'000 defined elements. This Java Program will define and display an array containing hexadecimal values to the standard output device or write a hex-dump array to a file. When porting a program to z/OS UNIX System Services, you must keep an eye out for these areas where the ASCII to EBCDIC conversion may cause problems: Hard- coded ASCII characters in C code as well as shell scripts. Avoid using hardcoded values or depending on the values of characters at all costs. For example, a program might use '\0. A program might use characters as indices into arrays that were populated using the ASCII values for indices. Even seemingly harmless code like the following probably needs to be changed: char c; for (c='a'; c< ='z'; c++) . This code will probably contain ASCII dependencies and won't work on . The code needs to be generated on OS/3. Note that this may introduce EBCDIC depenendencies making the code less- portable to other systems but at least it will work on OS/3. For example, y. tab. There should also be a comment in y. Applications that talk to arbitrary remote systems via sockets (such as an ftp client)These applications typically have to assume all text they receive is ASCII and they send out all text as ASCII. They have to convert the data locally as they go along. Consider an ftp client: a user will type a command such as. The ftp server does not want to see these characters in EBCDIC, so the client must convert the data to ASCII before they are written to the socket. Likewise, if you simply write the data coming from the server to the user's screen, it will be meaningless because it will be in ASCII. The client must first convert the data to EBCDIC. This is true even if the server is running on an EBCDIC system, such as OS/3. VM. However, you must be careful to convert only text data. Some applications may mix binary and text in a data stream. Signed integers can represent zero, positive integers, as well as negative integers. Three representation schemes are available for signed integers. DFSORT, ICETOOL & Utilities - Sort to convert PD to numeric - Mainframe forum - Mainframe Mainframe IBM tutorial, tutorials, material, materilas, faq, faqs. The DMS Software Reengineering Toolkit is a proprietary set of program transformation tools available for automating custom source program analysis, modification. I need to write a 'simple' util to convert from ASCII to EBCDIC? The Ascii is coming from Java, Web and going to an AS400. I've had a google around, can't seem to. I am looking for java code that can convert an EBCDIC binary file in to ASCII. This EBCDIC file also has some packed data fields, the program should be. For instance, the server might send 2 bytes of binary data preceding a block of text to represent the number of bytes in the block, a cksum value, etc. Code that relies on byte order of data may not be portable. If an application is responsible for transferring such data between platforms, you need to either (1) write data exchange logic or (2) translate to text, transfer as text, and then recreate as binary. Functions that support ASCII input/output. The OS/3. 90 C/C++ run- time library functions support EBCDIC characters. The libascii package and V1. R3. 0 C/C++ . If you are running on an earlier release of OS/3. ASCII interface layer for some of the more commonly used C/C++ run- time library functions. Here is an example showing how to set an environment variable called A2. E and then use it. A2. E= '- ofrom=ISO8. IBM- 1. 04. 7'. . EBCDIC programs can rely on autoconversion and file tagging instead. Autoconversion and file tagging can be controlled without changing the program or the file's contents. Enhanced ASCII considerations. As of z/OS V1. R2, some improvements were made to make porting applications to the z/OS platform easier. These improvements are collectively known as Enhanced ASCII. The following list is a summary of the Enhanced ASCII addition to z/OS: Enhanced ASCII should be suggested as an improvement to the libascii method. That is, C/C++ programs should be compiled with ASCII instead of CONVLIT(ISO8. One reason is that more CRTL functions are supported with ASCII. It is now easier for z/OS applications to read/write ASCII files, including those that may be shared with other systems. Previously, a porting effort might require adding code to convert ASCII to EBCDIC. If, however, the file can be tagged, it can be automatically converted without writing new code. This is one of SAP goals. Porting of ASCII files using pax or iconv might now be avoidable. EBCDIC programs can rely on autoconversion and file tagging instead. Autoconversion and file tagging can be controlled without changing the program or the file's contents.
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