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# Function to find a web browser to run on a URL or file.
# Can also be run as a script. It is suitable for use as
# a suffix alias:
# alias -s html=pick-web-browser
#
# The single argument is the URL or file name which may be of any type.
# The only processing which occurs is that if the argument is a file,
# it is converted into a URL. As the function takes account of
# any necessary conversions to the file name (for example, if it
# contains spaces), it is generally preferable to pass in raw file
# names rather than convert them to URLs elsewhere.
#
# The function takes account of the fact that many X Windows browsers
# which are already running on the current display can take a command
# to pass the URL to that process for handling. A typical sign
# that this has happened is that apparently nothing happens --- you
# need to check the browser window.
#
# If no $DISPLAY is set, the function tries to start a terminal-based
# browser instead.
emulate -L zsh
setopt extendedglob cbases nonomatch warncreateglobal
zmodload -i zsh/zutil
local -a xbrowsers ttybrowsers
# X Windows browsers which might be running and can accept
# a remote URL.
zstyle -a :mime: x-browsers xbrowsers ||
xbrowsers=(firefox mozilla netscape opera konqueror)
# Preferred command line browsers.
zstyle -a :mime: tty-browsers ttybrowsers ||
ttybrowsers=(elinks links lynx)
# Characters in addition to alphanumerics which can appear literally
# in a URL. `-' should be the first if it appears, so append others
# to the end.
local litc="-_./"
local -a windows remoteargs match mbegin mend
local url browser command
url=$1
if [[ -f $url ]]; then
if [[ $url = *[^-_[:alnum:]]* ]]; then
# Convert special characters into hex escapes.
local sofar
while [[ $url = (#b)([${litc}[:alnum:]]#)([^${litc}[:alnum:]])(*) ]]
do
sofar+="$match[1]%${$(( [#16] ##$match[2] ))##0x}"
url=$match[3]
done
url="$sofar$url"
fi
# Turn this into a local URL
if [[ $url = /* ]]; then
url=file://$url
else
url=file://$PWD/$url
fi
fi
local bstyle
local -a bstyles
zstyle -a :mime: browser-styles bstyles || bstyles=(running x tty)
for bstyle in $bstyles; do
case $bstyle in
(running)
[[ -z $DISPLAY ]] && continue
# X Windows running
# Get the name of all windows running; use the internal name, not
# the friendly name, which is less useful.
#
# The nasty but portable version.
# The nice but non-portable version uses Perl, even though perl
# is more portable.
# windows=(${(f)"$(xwininfo -root -all |
# sed -ne 's/.*".*": ("\(.*\)" ".*").*/\1/p' |sort | uniq)"})
windows=(${(f)"$(xwininfo -root -all |
perl -ne '/.*"(.*)": \("(.*)" "(.*)"\).*/ and $w{$2} = 1;
END { print join("\n", keys %w), "\n" }')"})
# Is any browser we've heard of running?
for browser in $xbrowsers; do
# Some browser executables call themselves <browser>-bin
if [[ $windows[(I)(#i)$browser(|[.-]bin)] -ne 0 ]]; then
if zstyle -s ":mime:browser:running:${browser}:" command command; then
# The (q)'s here and below are pure paranoia: no browser
# name is going to include metacharacters, and we already
# converted difficult characters in the URL to hex.
zformat -f command $command b:${(q)browser} u:${(q)url}
eval $command
else
case $browser in
(konqueror)
# kfmclient is less hairy and better supported than direct
# use of dcop. Run kfmclient --commands
# for more information. Note that as konqueror is a fully
# featured file manager, this will actually do complete
# MIME handling, not just web pages.
kfmclient openURL $url ||
dcop $(dcop|grep konqueror) default openBrowserWindow $url
;;
(firefox)
# open in new tab
$browser -new-tab $url
;;
(opera)
$browser -newpage $url
;;
(*)
# Mozilla bells and whistles are described at:
# http://www.mozilla.org/unix/remote.html
$browser -remote "openURL($url)"
;;
esac
fi
return
fi
done
;;
(x)
[[ -z $DISPLAY ]] && continue
# Start our preferred X Windows browser in the background.
for browser in $xbrowsers; do
if eval "[[ =$browser != \\=$browser ]]"; then
if zstyle -s ":mime:browser:new:${browser}:" command command; then
zformat -f command $command b:${(q)browser} u:${(q)url}
eval $command "&"
else
# The following is to make the job text more readable.
eval ${(q)browser} ${(q)url} "&"
fi
return
fi
done
;;
(tty)
# Start up dumb terminal browser.
for browser in $ttybrowsers; do
if eval "[[ =$browser != \\=$browser ]]"; then
if zstyle -s ":mime:browser:new:${browser}" command command; then
zformat -f command $command b:${(q)browser} u:${(q)url}
eval $command
else
$browser $url
fi
return
fi
done
;;
esac
done
# No eligible browser.
return 255
|
