Re-implement zurl() under the goo.gl API

diff --git a/etc/zsh/zshrc b/etc/zsh/zshrc
index f5b943f..a33c6df 100644 (file)
--- a/etc/zsh/zshrc
+++ b/etc/zsh/zshrc
@@ -2640,46 +2640,39 @@ xtrename() {
     return 0
 }
 
-# TODO:
-# Rewrite this by either using tinyurl.com's API
-# or using another shortening service to comply with
-# tinyurl.com's policy.
-#
-# Create small urls via http://tinyurl.com using wget(1).
-#function zurl() {
-#    emulate -L zsh
-#    [[ -z $1 ]] && { print "USAGE: zurl <URL>" ; return 1 }
-#
-#    local PN url tiny grabber search result preview
-#    PN=$0
-#    url=$1
-##   Check existence of given URL with the help of ping(1).
-##   N.B. ping(1) only works without an eventual given protocol.
-#    ping -c 1 ${${url#(ftp|http)://}%%/*} >& /dev/null || \
-#        read -q "?Given host ${${url#http://*/}%/*} is not reachable by pinging. Proceed anyway? [y|n] "
-#
-#    if (( $? == 0 )) ; then
-##           Prepend 'http://' to given URL where necessary for later output.
-#            [[ ${url} != http(s|)://* ]] && url='http://'${url}
-#            tiny='http://tinyurl.com/create.php?url='
-#            if check_com -c wget ; then
-#                grabber='wget -O- -o/dev/null'
-#            else
-#                print "wget is not available, but mandatory for ${PN}. Aborting."
-#            fi
-##           Looking for i.e.`copy('http://tinyurl.com/7efkze')' in TinyURL's HTML code.
-#            search='copy\(?http://tinyurl.com/[[:alnum:]]##*'
-#            result=${(M)${${${(f)"$(${=grabber} ${tiny}${url})"}[(fr)${search}*]}//[()\';]/}%%http:*}
-##           TinyURL provides the rather new feature preview for more confidence. <http://tinyurl.com/preview.php>
-#            preview='http://preview.'${result#http://}
-#
-#            printf '%s\n\n' "${PN} - Shrinking long URLs via webservice TinyURL <http://tinyurl.com>."
-#            printf '%s\t%s\n\n' 'Given URL:' ${url}
-#            printf '%s\t%s\n\t\t%s\n' 'TinyURL:' ${result} ${preview}
-#    else
-#        return 1
-#    fi
-#}
+# Create small urls via http://goo.gl using curl(1).
+# API reference: https://code.google.com/apis/urlshortener/
+function zurl() {
+    emulate -L zsh
+    if [[ -z $1 ]]; then
+        print "USAGE: zurl <URL>"
+        return 1
+    fi
+
+    local PN url prog api json data
+    PN=$0
+    url=$1
+
+    # Prepend 'http://' to given URL where necessary for later output.
+    if [[ ${url} != http(s|)://* ]]; then
+        url='http://'${url}
+    fi
+
+    if check_com -c curl; then
+        prog=curl
+    else
+        print "curl is not available, but mandatory for ${PN}. Aborting."
+        return 1
+    fi
+    api='https://www.googleapis.com/urlshortener/v1/url'
+    contenttype="Content-Type: application/json"
+    json="{\"longUrl\": \"${url}\"}"
+    data=$($prog --silent -H ${contenttype} -d ${json} $api)
+    # Match against a regex and print it
+    if [[ $data =~ '"id": "(http://goo.gl/[[:alnum:]]+)"' ]]; then
+        print $match;
+    fi
+}
 
 #f2# Find history events by search pattern and list them by date.
 whatwhen()  {