11/20/2022 0 Comments Vfp cliptext![]() For example, FGETS() allows us to read a line at a time. However with the LLFF we also have fine control. Given the similar execution times, I think we can conclude that internally, LLFF and FILETOSTR() are implemented similarly. H = FOPEN( "WarAndPeace.TXT" ) & 3.2 mb in size The following example reads the entire contents of Tolstoys War And Peace from disk into memory: Low Level File Functions ( LLFF ) are somewhat more cumbersome but offer great control. Vfp cliptext full#In other words, on a very modest laptop ( by todays standards ) VFP can load the full text from Tolstoys War And Peace in one-seventh of a second. X = FILETOSTR( WarAndPeace.TXT ) & 3.2 mb in size Vfp cliptext code#For example, the following code executes in one-seventh of a second on my 220Mhz Pentium laptop. This is among my favorite new functions in VFP 6. There are many ways to retrieve text from files on disk.įILETOSTR( cFileName ) is used to place the contents of a disk file into a string memory variable. * Note that it doesn't matter if the field is type Character or Memo. INSERT INTO Ships ( Name, Desc ) VALUES ( "Exxon Valdez", "Billions unpaid!" ) To retrieve text from a table field, simply assign it to a memory variable.ĬREATE TABLE Ships ( Name C( 40 ), Desc M ) This section is all about getting text into your processing environment. The maximum number of characters that VFP can handle in a string is 16, 777, 184. All functions that work on characters also work on memos. In functional terms, there is no difference between a character field and a memo field. Here are a few things you need to know about VFP strings: This article was originally written using Visual FoxPro version 6, and has since been updated for VFP 7 and VFP 8. To illustrate text handling in VFP, I am using the complete text of Tolstoys War And Peace, included on the conference CD as WarAndPeace.TXT, which along with thousands of works of literature, are available on the web, including here among others. Processing is about manipulating the text, and Outbound is about sending text on its way when youre done. This document is split into three sections: Inbound is about getting text into the VFP environment so you can work with it. I think otherwise, and I hope youll agree. On the surface, handling text isnt very sexy and seemingly not very interesting. I always seem to be involved with solving many text-data related problems in my VFP projects. This article serves to introduce, illustrate, and explore some of the great ( and not so great ) string handling capabilities of Visual FoxPro. ![]()
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