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disksstats.rexx
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OS/2 REXX Batch file
|
1995-06-01
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1KB
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72 lines
/*
* This is a sample script which is called with the "Stats" item,
* installed using the $MENU specification in the input mask
*
* It shows how to control AFile using AREXX
*
* This script counts how many disks have been purchased each year
*/
SIGNAL ON ERROR
OPTIONS RESULTS
ADDRESS "AFile_rexx"
/* reset variables */
Year = 0
Count = 0
SAY "Number of disks purchased by year" || D2C(10)
/* sort the file on purchase date (ascending order) */
"SORT PURCHASE"
/* process all the records */
"SEEK FIRST"
DO FOREVER
/* get year of purchase in current record */
"GETFIELD PURCHASE"
NewYear = RIGHT( RESULT , 2 )
/* compare with previous year */
IF NewYear ~= Year THEN DO
CALL DisplayResult( Year Count )
Count = 0
END
/* update count */
Year = NewYear
Count = Count + 1
/* read next record */
"SEEK NEXT"
END
/*
* We should come here only because "SEEK NEXT" has returned an error
* (end of file)
*/
ERROR:
/* flush last result */
CALL DisplayResult( Year Count )
/* release sort */
"RELEASE ALL"
EXIT 0
/*
* Procedure called to display the result for one year
*/
DisplayResult: PROCEDURE
PARSE ARG Year Count
IF Year ~= 0 THEN DO
SAY "19" || Year || " : " || Count
END
RETURN "0"