oh-my-zsh/plugins/web-search/web-search.plugin.zsh

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# web_search from terminal
function web_search() {
emulate -L zsh
# define search engine URLS
typeset -A urls
urls=(
google "https://www.google.com/search?q="
bing "https://www.bing.com/search?q="
yahoo "https://search.yahoo.com/search?p="
duckduckgo "https://www.duckduckgo.com/?q="
yandex "https://yandex.ru/yandsearch?text="
)
# define the open command
case "$OSTYPE" in
darwin*) open_cmd="open" ;;
cygwin*) open_cmd="cygstart" ;;
linux*) open_cmd="xdg-open" ;;
*) echo "Platform $OSTYPE not supported"
return 1
;;
esac
# check whether the search engine is supported
if [[ -z "$urls[$1]" ]]; then
echo "Search engine $1 not supported."
return 1
fi
# search or go to main page depending on number of arguments passed
if [[ $# -gt 1 ]]; then
# build search url:
# join arguments passed with '+', then append to search engine URL
url="${urls[$1]}${(j:+:)@[2,-1]}"
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else
# build main page url:
# split by '/', then rejoin protocol (1) and domain (2) parts with '//'
url="${(j://:)${(s:/:)urls[$1]}[1,2]}"
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fi
nohup $open_cmd "$url" &>/dev/null
}
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alias bing='web_search bing'
alias google='web_search google'
alias yahoo='web_search yahoo'
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alias ddg='web_search duckduckgo'
alias yandex='web_search yandex'
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#add your own !bang searches here
alias wiki='web_search duckduckgo \!w'
alias news='web_search duckduckgo \!n'
alias youtube='web_search duckduckgo \!yt'
alias map='web_search duckduckgo \!m'
alias image='web_search duckduckgo \!i'
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alias ducky='web_search duckduckgo \!'