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URL Parsing function for Bash
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# | |
# URI parsing function | |
# | |
# The function creates global variables with the parsed results. | |
# uri_schema, uri_address, uri_user, uri_password, uri_host, uri_port, uri_path, uri_query, uri_fragment | |
# It returns 0 if parsing was successful or non-zero otherwise. | |
# | |
# [schema://][user[:password]@]host[:port][/path][?[arg1=val1]...][#fragment] | |
# | |
function uri_parser() { | |
# uri capture | |
local uri="$@" | |
# safe escaping | |
uri="${uri//\`/%60}" | |
uri="${uri//\"/%22}" | |
# top level parsing | |
local pattern='^(([a-z]{3,5})://)?((([^:\/]+)(:([^@\/]*))?@)?([^:\/?]+)(:([0-9]+))?)(\/[^?]*)?(\?[^#]*)?(#.*)?$' | |
[[ "$uri" =~ $pattern ]] || return 1; | |
# component extraction | |
uri=${BASH_REMATCH[0]} | |
uri_schema=${BASH_REMATCH[2]} | |
uri_address=${BASH_REMATCH[3]} | |
uri_user=${BASH_REMATCH[5]} | |
uri_password=${BASH_REMATCH[7]} | |
uri_host=${BASH_REMATCH[8]} | |
uri_port=${BASH_REMATCH[10]} | |
uri_path=${BASH_REMATCH[11]} | |
uri_query=${BASH_REMATCH[12]} | |
uri_fragment=${BASH_REMATCH[13]} | |
# path parsing | |
local count=0 | |
local path="$uri_path" | |
local pattern='^/+([^/]+)' | |
while [[ $path =~ $pattern ]]; do | |
eval "uri_parts[$count]=\"${BASH_REMATCH[1]}\"" | |
path="${path:${#BASH_REMATCH[0]}}" | |
let count++ | |
done | |
# query parsing | |
local count=0 | |
local query="$uri_query" | |
local pattern='^[?&]+([^= ]+)(=([^&]*))?' | |
while [[ $query =~ $pattern ]]; do | |
eval "uri_args[$count]=\"${BASH_REMATCH[1]}\"" | |
eval "uri_arg_${BASH_REMATCH[1]}=\"${BASH_REMATCH[3]}\"" | |
query="${query:${#BASH_REMATCH[0]}}" | |
let count++ | |
done | |
# return success | |
return 0 | |
## http://vpalos.com/537/uri-parsing-using-bash-built-in-features/ | |
} | |
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