165 lines
6.7 KiB
Rexx
165 lines
6.7 KiB
Rexx
/*----------------------------------------------------------------------------*/
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/* */
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/* Copyright (c) 2008-2014 Rexx Language Association. All rights reserved. */
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/* */
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/* This program and the accompanying materials are made available under */
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/* the terms of the Common Public License v1.0 which accompanies this */
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/* distribution. A copy is also available at the following address: */
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/* https://www.oorexx.org/license.html */
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/* */
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/* Redistribution and use in source and binary forms, with or */
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/* without modification, are permitted provided that the following */
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/* conditions are met: */
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/* */
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/* Redistributions of source code must retain the above copyright */
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/* notice, this list of conditions and the following disclaimer. */
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/* Redistributions in binary form must reproduce the above copyright */
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/* notice, this list of conditions and the following disclaimer in */
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/* the documentation and/or other materials provided with the distribution. */
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/* */
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/* Neither the name of Rexx Language Association nor the names */
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/* of its contributors may be used to endorse or promote products */
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/* derived from this software without specific prior written permission. */
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/* */
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/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS */
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/* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT */
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/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS */
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/* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT */
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/* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */
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/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED */
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/* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, */
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/* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY */
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/* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING */
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/* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS */
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/* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
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/* */
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/*----------------------------------------------------------------------------*/
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/**
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* Demonstrates handling files 'dropped' on this program. In Windows explorer,
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* drag any file over this program and drop it. The OS will then execute this
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* program and provide the complete path name of the 'dropped' file as the
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* argument to this program. The program then 'handles' the dropped file. Use
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* fileDrop.input to simulate processing a data input file.
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*
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* Note that you can also run this program from the command prompt by supplying
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* the correct file name argument. I.e.:
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*
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* rexx fileDrop.rex fileDrop.input
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*
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*/
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use arg fileName
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-- Note that the OS seems to tack an extra space on the end of the file name
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-- argument. So, we strip it off to start with.
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fileName = fileName~strip
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-- Display the fileName argument.
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msg = "Got file name argument:" || .endOfLine || .endOfLine || fileName
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j = RxMessageBox(msg, "ooRexx File Drop Handling", "OK", "INFORMATION")
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-- Check if the file exists. If not, this program was probably invoked from
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-- the command line rather than through drag-and-drop.
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if \ SysFileExists(fileName) then do
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msg = "The file does not exist." || .endOfLine || .endOfLine || -
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"Perhaps you are not using drag and drop?" || .endOfLine || -
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"In Windows explorer, drag a file and drop" || .endOfLine || -
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"it on this program's icon."
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j = RxMessageBox(msg, "ooRexx File Drop Handling", "OK", "INFORMATION")
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return 9
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end
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-- Check if it is a directory.
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if SysIsFileDirectory(fileName) then do
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msg = 'Dropped file is a directory. Will print out directory contents.'
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j = RxMessageBox(msg, "ooRexx File Drop Handling", "OK", "INFORMATION")
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count = printDirectory(fileName)
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msg = 'There were' count 'entries in the directory. Quitting.'
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j = RxMessageBox(msg, "ooRexx File Drop Handling", "OK", "INFORMATION")
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return 0
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end
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-- Should be a file, be sure we can read it.
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f = .stream~new(fileName)
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if f~open("READ") \== "READY:" then do
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msg = "Could not open:" || .endOfLine || .endOfLine || -
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fileName || .endOfLine || .endOfLine || -
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"for reading. Quitting"
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j = RxMessageBox(msg, "ooRexx File Drop Handling", "OK", "INFORMATION")
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return 9
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end
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-- Collect some data on the file and then display it.
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count = f~lines
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if count >= 3 then do
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line = f~linein(3)
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number = 3
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end
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else if count >= 1 then do
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line = f~linein(1)
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number = 1
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end
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else do
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line = "The file is empty."
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number = 0
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end
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f~close
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msg = "The file has" count "lines." || .endOfLine || .endOfLine
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if number == 0 then do
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msg = msg || line
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end
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else do
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msg = msg || "Line number" number "reads as follows:" || .endOfLine || .endOfLine || line
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end
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j = RxMessageBox(msg, "ooRexx File Drop Handling", "OK", "INFORMATION")
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-- This would be a check that the file is a correct data input file.
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if line == "----data input file----" then do
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recordCount = updateDataBase(f)
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msg = "Processed" recordCount "database records. Finished."
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end
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else do
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msg = "Invalid data file. Quitting"
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end
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j = RxMessageBox(msg, "ooRexx File Drop Handling", "OK", "INFORMATION")
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return 0
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-- Print out the directory entries in the specified directory
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::routine printDirectory
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use strict arg directoryName
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dir = directoryName || '\*.*'
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count = -1
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j = SysFileTree(dir, f., 'BT')
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if j == 0 then do
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do i = 1 to f.0
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say f.i
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end
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count = f.0
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end
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return count
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-- Update the database use the specified information.
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::routine updateDataBase
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use strict arg f
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-- Simulate processing / updating database records using the data input file.
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-- We just fake it.
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countProcessed = 0
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ret = f~seek('=1 READ')
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do while f~state == "READY"
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line = f~linein
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countProcessed += 1
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end
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countProcessed *= random(2, 9)
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f~close
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return countProcessed
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