Update prefixed delta lines

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The process option UPDPDEL produces a variable-length update file that contains header records and complete delta lines from the input files, up to a maximum of 32K bytes in each output line.

The UPDPDEL process option is available for the LINE compare type only.

Figure 1 shows an example of a UPDPDEL update file.

Prefix codes (I for insert and D for delete) together with the line number precede lines from the input files. Sub-totals are shown before each group of flagged records:
  • INS#= for the number of consecutive inserted records,
  • DEL#= for the number of consecutive deleted records,
  • RPL#= for the number of consecutive pairs of replaced records, and
  • MAT#= for the number of intervening matched records.
Figure 1. Example of a UPDPDEL update file
 1  *    NEW:   JLEVERIN   TEST2    A                                 07/11/2008 12.08
 2  *    OLD:   JLEVERIN   TEST1    A
 3  *ID-   LINE#       SOURCE LINE
 4  *                                   RPL#= 00000001
 5  I - 00000001  This line is reformatted; the spacing in the "new" file differs.        00000100
 6  D - 00000001  This line is reformatted; the  spacing  in  the  "new"  file  differs.  00000100
 4  *                                   RPL#= 00000001                MAT#= 00000001
 5  I - 00000003  This line differs from the text in the "old" file                       00000300
 6  D - 00000003  This line differs from the text in the "new" file.                      00000300
 7  *                                   INS#= 00000001                MAT#= 00000001
 8  I - 00000005  This line is in the "new" file, but not in the old.
 9  *   END                                                                               00000500
The example in Figure 1 has the following lines:
 1 
Comment line. Lists the new file name and the date and time of the comparison.
 2 
Comment line. Lists the old file name.
 3 
Header comment line.
 4 
Sub-total line showing that 1 replaced pair of records follow.
 5 
The line that has replaced the line in the old file.
 6 
The line in the old file that has been replaced.
 7 
Sub-total line showing that 1 inserted record follows.
 8 
The line that has been inserted in the new file.
 9 
Comment line. Ends the update file.