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CD World 1998 January
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CD World - Ocak 1998.iso
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dbase55
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disk7
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extern.pak
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DBGREP.PRG
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1996-01-05
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69 lines
*******************************************************************************
* PROGRAM: dbgrep.prg
*
* WRITTEN BY: Borland Samples Group.
*
* DATE: 1/94
*
* UPDATED: 5/95
*
* REVISION: $Revision: 2.4 $
*
* VERSION: Visual dBASE
*
* DESCRIPTION: Small example that uses dbfile.dll. It implements
* a grep to search for a literal string in a file.
*
* PARAMETERS: String to search for, filename.
*
* CALLS: To dbfile.dll
*
* USAGE: do dbgrep with "string", "filename"
*
*******************************************************************************
parameters str, name
set talk off
* Check parameters.
tellusage = 1
* Enough parameters?
if pcount() = 2
* Of the right type?
if type( "str" ) = "C" .AND. type( "name" ) = "C"
tellusage = 0
endif
endif
if tellusage = 1
? "Usage: do dbgrep with 'string', 'filename'"
return
endif
* Check for valid file.
if .not. file( name )
? "No such file: " + name
return
endif
* Initialize dbfile.dll
set procedure to dbfile additive
do dbfile
* Open up and set the filter to the string wanted.
f = new textfile()
f.filter( str )
f.open( name )
* Go till something happens.
do while .not. (f.eof() .or. f.error())
str = f.getline()
? str
enddo
* Close up.
f.close()
f.release()