Web検索のサジェストキーワードを取得する.sh

suggest.sh

#!/bin/sh

# suggest.sh -- get suggestion keywords from several site
#
# Usage:
#   suggest SITE KEYWORDS...
#   SITE:
#     youtube(yt), archwiki(aw), duckduckgo(d), wikipedia(w), amazon(a)
# Example:
#   suggest wikipedia Linux
# Dependences:
#   curl, jq
# License: WTFPL


_urlencode() {
    printf "%s" "${*}" | od -tx1 -An | tr ' ' % | tr -d \\n
}

_duckduckgo() {
    keyword="${*}"
    lang="ja"
    curl -s "https://ac.duckduckgo.com/ac/?q=$(_urlencode "${keyword}")&type=list&kl=${lang}" | jq -r '.[1][]'
}

_youtube() {
    keyword="${*}"
    lang="ja"
    curl -s "https://suggestqueries.google.com/complete/search?client=chrome&ds=yt&q=$(_urlencode "${keyword}")" | 
        jq -r '.[1] | .[]'
}

_archwiki() {
    keyword="${*}"
    limit=100
    curl -s "https://wiki.archlinux.org/api.php?action=opensearch&format=json&formatversion=2&search=$(_urlencode "${keyword}")&namespace=0%7C3000&limit=${limit}&suggest=true" | 
        jq -r '.[1][]'
}

_wikipedia() {
    keyword="${*}"
    lang="ja"
    limit=100
    curl -s "https://${lang}.wikipedia.org/w/api.php?action=query&format=json&generator=prefixsearch&prop=pageprops|pageimages|description&redirects=&ppprop=displaytitle&piprop=thumbnail&pithumbsize=80&pilimit=6&gpssearch=$(_urlencode "${keyword}")&gpsnamespace=0&gpslimit=${limit}" |
        jq -r '.query["pages"][]  | "\(.title) - \(.description) "'
}

_amazon() {
    keyword="${*}"
    curl -s "https://completion.amazon.com/search/complete?search-alias=aps&mkt=1&q=$(_urlencode "${keyword}")" |
        jq -r '.[1][]'
}

case "${1}" in
"youtube" | "yt")
    shift 1
    _youtube "${@}"
    exit 0
    ;;
"archwiki" | "aw")
    shift 1
    _archwiki "${@}"
    exit 0
    ;;
"duckduckgo" | "ddg")
    shift 1
    _duckduckgo "${@}"
    exit 0
    ;;
"wikipedia" | "w")
    shift 1
    _wikipedia "${@}"
    exit 0
    ;;
"amazon" | "a")
    shift 1
    _amazon "${@}"
    exit 1
    ;;
*)
    echo "Site not found" >&2
    exit 1
    ;;
esac