Reading and Writing in files: Difference between revisions
No edit summary |
|||
| Line 1: | Line 1: | ||
{{PageAuthor|n0On3}} | {{PageAuthor|n0On3}} | ||
'''Bold text'''[[Link title]][[File:Example.jpg]][[Media:Example.ogg]]'''Bold text'''''Italic text''bem vindo[[Link title]]pra vc[http://www.example.com link title][[File:Example.jpg]][[Media:Example.ogg]]<math>Insert formula here</math><nowiki>Insert non-formatted text here</nowiki>--[[User:200.100.172.131|200.100.172.131]] 22:51, 15 November 2008 (UTC)--[[User:200.100.172.131|200.100.172.131]] 22:51, 15 November 2008 (UTC) | |||
---- | |||
== Description == | == Description == | ||
This example is to show you how easy is to read/write in files. | This example is to show you how easy is to read/write in files. | ||
== Write (overwrite) == | == Write (overwrite) == | ||
This will overwrite SomeFile.txt contents or create it and put "hello" inside: | This will overwrite SomeFile.txt contents or create it and put "hello" inside: | ||
Revision as of 22:51, 15 November 2008
| Author: n0On3 (talk, contrib) |
Bold textLink titleFile:Example.jpgMedia:Example.oggBold textItalic textbem vindoLink titlepra vclink titleFile:Example.jpgMedia:Example.ogg<math>Insert formula here</math>Insert non-formatted text here--200.100.172.131 22:51, 15 November 2008 (UTC)--200.100.172.131 22:51, 15 November 2008 (UTC)
Description
This example is to show you how easy is to read/write in files.
Write (overwrite)
This will overwrite SomeFile.txt contents or create it and put "hello" inside:
FileOpen $4 "$DESKTOP\SomeFile.txt" w FileWrite $4 "hello" FileClose $4
Write (append)
If the file exists and you don't want to lose its contents use this:
FileOpen $4 "$DESKTOP\SomeFile.txt" a FileSeek $4 0 END FileWrite $4 "$\r$\n" ; we write a new line FileWrite $4 "hello" FileWrite $4 "$\r$\n" ; we write an extra line FileClose $4 ; and close the file
That "$\r$\n" means "carriage return + new line". This is how windows knows that there's a new line in the file.
Read
For reading files:
FileOpen $4 "$DESKTOP\SomeFile.txt" r FileSeek $4 1000 ; we want to start reading at the 1000th byte FileRead $4 $1 ; we read until the end of line (including carriage return and new line) and save it to $1 FileRead $4 $2 10 ; read 10 characters from the next line FileClose $4 ; and close the file
The variables we use to read/write can only hold up to 1024 bytes, but this is harldy a problem. Notice that every example used a different mode to open the file "w" "a" and "r".
