Created
January 20, 2017 17:25
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TCL & Perl Web scraper from The Practice of Programming by Brian W. Kernighan and Rob Pike
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# geturl.tcl: retrieve document from URL | |
# input has form [http://]abc.def.com[/whatever...] | |
regsub "http://" $argv "" argv ;# remove http:// if present | |
regsub "/" $argv " " argv ;# replace leading / with blank | |
set so [socket [lindex $argv 0] 80] ;# make network connection | |
set q "/[lindex $argv 1]" | |
puts $so "GET $q HTTP/1.0\n\n" ;# send request | |
flush $so | |
while {[gets $so line] >= 0 && $line != ""} {} ;# skip header | |
puts [read $so] |
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# unhtml.pl: delete HTML tags | |
while (<>) { # collect all input into single string | |
$str .= $_; # by concatenating input lines | |
} | |
$str =~ s/<[^>]*//g; # delete <...> | |
$str =~ s/ / /g; # replace by blank | |
$str =~ s/\s+/\n/g; # compress white space | |
print $str |
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