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the underminer
Joined: 03 Oct 2005
Posts: 124
Location: Netherlands
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 Posted: Thu Nov 02, 2006 6:21 am Post subject: WLAN file transfer |
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When you download a file with the method in the example, you'll get a server message, followed by the contents of the file. If I want to print only the contents of the file. The contents are separated from server info by a double enter.("\r\n\r\n"). I do this: | Code: |
if string.find(buffer,"\r\n\r\n") then print(string.sub(buffer,string.find(buffer,"\r\n\r\n"))) end |
But it doesn't work. string.find has two outputs, the start and end where it found the "\r\n\r\n". How do I handle this? How can I tell string.sub to use only the first output of find(start position)? And why doesn't it print anything?
I hope I am not too vague
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be2003
Joined: 20 Apr 2006
Posts: 144
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| Posted: Thu Nov 02, 2006 12:36 pm Post subject: |
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this should work:
| Code: |
datafile = string.sub(buffer, string.find(buffer, "\r\n\r\n", -1))
filename = "file.txt"
file = io.open(filename, "w")
if file then
file:write(datafile)
file:close()
end
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the underminer
Joined: 03 Oct 2005
Posts: 124
Location: Netherlands
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| Posted: Fri Nov 03, 2006 12:36 am Post subject: |
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I got it working now, but you must leave out -1 in your code
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the underminer
Joined: 03 Oct 2005
Posts: 124
Location: Netherlands
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| Posted: Fri Nov 03, 2006 12:39 am Post subject: |
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string.find returns 2 values: start of found pattern and end. How can I tell string.sub to use the last value + 1 ? (I'm now using starting value+4 wich is basicly the same, just curious)
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be2003
Joined: 20 Apr 2006
Posts: 144
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| Posted: Fri Nov 03, 2006 2:25 pm Post subject: |
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i think i put the -1 in the wrong place.... try this....
| Code: |
datafile = string.sub(buffer, (string.find(buffer, "\r\n\r\n"))+4,-1)
filename = "file.txt"
file = io.open(filename, "w")
if file then
file:write(datafile)
file:close()
end
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i think to do two vlaues you do...(my lua is a little rusty)
| Code: |
outone, outtwo = string.find(buffer,"\r\n\r\n")
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the underminer
Joined: 03 Oct 2005
Posts: 124
Location: Netherlands
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| Posted: Sat Nov 04, 2006 9:04 pm Post subject: |
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| be2003 wrote: | i think i put the -1 in the wrong place.... try this....
| Code: |
datafile = string.sub(buffer, (string.find(buffer, "\r\n\r\n"))+4,-1)
filename = "file.txt"
file = io.open(filename, "w")
if file then
file:write(datafile)
file:close()
end
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This Is exactly how I've changed it!
For the second code: should work. I'll try it soon
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