32 lines
722 B
Forth
32 lines
722 B
Forth
# net:fetch
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This is a simple wrapper over `curl` (https://curl.haxx.se). It
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uses the `unix:popen` word to initiate a pipe to curl and stores
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the returned data into a buffer.
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This takes in three values:
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- the URL to fetch
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- the destination buffer
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- a maximum number of bytes to read
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The buffer should be at least one cell longer than the max to
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allow for the NULL termination.
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## The Code
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~~~
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:net:fetch (san-n)
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[ [ buffer:set
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'curl_-s_%s s:format file:R unix:popen ] dip
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[ dup file:read 0; buffer:add ] times unix:pclose
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buffer:start s:length ] buffer:preserve ;
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~~~
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## Test Case
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```
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'Data d:create #256001 allot
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'gopher://forthworks.com &Data #300009 net:fetch
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'%n_bytes_read\n s:format s:put
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```
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