File suse-update-mime-defaults of Package desktop-file-utils
#!/bin/sh
#
# suse-update-mime-defaults - create default application ordering for MIME associations
#
# Copyright (C) 2012 Guido Berhoerster <gber@opensuse.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# TORTIOUS ACTION, ARISING OUT OF PERFORMANCE OF THIS SOFTWARE.
#
export LC_ALL=C
# reset XDG_DATA_DIRS so it can be trusted
unset XDG_DATA_DIRS
if [ "${PROFILEREAD}" != "true" ]; then
. $r/etc/profile
fi
# ensue the cache directory structure is in order
if [ ! -d $r/var/cache/gio-2.0 ]; then
mkdir -m 755 -p $r/var/cache/gio-2.0
fi
for desktop in gnome xfce lxde; do
awk -vdesktop=${desktop} '
# print a warning to stderr
function warn(msg, cmd) {
cmd = "cat >&2"
print msg | cmd
close(cmd)
}
# print an error message and exit with the given exit status
function err(status, msg)
{
warn(msg)
exit_status = status
exit exit_status
}
# delete all elements of an array
function delete_array(arr, i) {
for (i in arr) {
delete arr[i]
}
}
# find preferred combination of mimetype and category
function find_preferred_category(mimetypes_categories, categories, mimetype,
i) {
for (i = 1; i in categories; i++) {
if (mimetype SUBSEP categories[i] in mimetypes_categories) {
return mimetypes_categories[mimetype,categories[i]]
}
}
}
# sort keys of an array by index (using the awk default comparison)
function asorti2(src, dest, key, len) {
len = 0
delete_array(dest)
for (key in src) {
dest[len++] = key
}
_qsorti(dest, 0, len - 1);
}
function array_swap(arr, i, j, tmp) {
tmp = arr[i]
arr[i] = arr[j]
arr[j] = tmp
}
# Based on Bentley, J. L., 2000. Programming Pearls. 2nd ed. Reading, MA:
# Addison-Wesley Professional.
function _qsorti(dest, l, u, val, i, j) {
if (l >= u) {
return
}
array_swap(dest, l, l + int(rand() * (u - l)))
val = dest[l]
i = l
j = u + 1
while (1) {
do { i++ } while (i <= u && dest[i] < val)
do { j-- } while (dest[j] > val)
if (i > j) {
break
}
array_swap(dest, i, j)
}
array_swap(dest, l, j)
_qsorti(dest, l, j - 1)
_qsorti(dest, j + 1, u)
}
BEGIN {
desktop = desktop != "" ? desktop : "gnome"
if (desktop == "gnome") {
categories_list = "GNOME,GTK"
} else if (desktop == "xfce") {
categories_list = "XFCE,GTK"
} else if (desktop == "lxde") {
categories_list = "GTK"
}
split(categories_list, categories, /,/)
root = ENVIRON["r"]
defaults_conf = root "/etc/" desktop "_defaults.conf"
# parse desktop defaults preferences
lineno = 0
while ((getline < defaults_conf) > 0) {
lineno++
if (NF == 0 || $1 ~ /^#/) {
# skip comments and empty lines
continue
} else if (NF != 1) {
err(1, "syntax error in " defaults_conf " line " lineno)
} else if (split($1, arr, /=/) == 2) {
# handle MIME type defaults
mimetype_default_apps[arr[1]] = arr[2]
} else if ($1 ~ /^!.+\.desktop$/) {
# handle preferred default applications
preferred_default_apps[substr($1, 2)] = substr($1, 2)
} else if ($1 ~ /^.+\.desktop$/) {
# handle regular default applications
default_apps[$1] = $1
} else {
err(1, "syntax error in " defaults_conf ", line " lineno)
}
}
close(defaults_conf)
# find all desktop files
for (i = split("XDG_DATA_DIRS" in ENVIRON ? ENVIRON["XDG_DATA_DIRS"] : \
"/usr/local/share:/usr/share", xdg_data_dirs, /:/); i > 0; i--) {
# XDG_DATA_DIRS is trusted here because it has been reset
cmd = "find \"" root xdg_data_dirs[i] "/applications/\" -name \"*.desktop\" " \
"2>/dev/null"
while ((cmd | getline desktopfile) > 0) {
l = split(desktopfile, arr, "/")
desktopfiles[arr[l]] = desktopfile
}
close(cmd)
}
# process all desktop files in alphabetical order
asorti2(desktopfiles, desktopfiles_keys)
for (i = 0; i in desktopfiles_keys; i++) {
# parse a desktop file
desktopfile = desktopfiles_keys[i]
delete_array(desktopfile_mimetypes)
delete_array(desktopfile_categories)
lineno = 0
in_desktop_entry = 0
while ((getline < desktopfiles[desktopfile]) > 0) {
lineno++
if (NF == 0 || $1 ~ /^#/) {
# skip comments and empty lines
continue
} else if (in_desktop_entry == 0 && \
$0 ~ /^\[Desktop Entry\][\t ]*$/) {
# desktop entry group
in_desktop_entry = 1
} else if (in_desktop_entry == 1) {
if (in_desktop_entry == 1 && $1 ~ /^\[/) {
# quit when a different group starts, "Desktop Entry" must
# come first
break
} else if ($0 ~ /^MimeType *=/ && split($0, arr, /=/) == 2) {
# handle MimeTypes
gsub(/(^ *|; *$)/, "", arr[2])
split(arr[2], desktopfile_mimetypes, /;/)
} else if ($0 ~ /^Categories *=/ && split($0, arr, /=/) == 2) {
# handle Categories
gsub(/(^ *|; *$)/, "", arr[2])
split(arr[2], desktopfile_categories, /;/)
} else if ($0 ~ /^[A-Za-z0-9\[\]@_-]+ *=/) {
# skip other keys
continue
}
} else {
warn("syntax error in " desktopfiles[desktopfile] ", line " \
lineno)
break
}
}
close(desktopfiles[desktopfile])
# store the results
for (j = 1; j in desktopfile_mimetypes; j++) {
if (desktopfile_mimetypes[j] in mimetype_default_apps && \
mimetype_default_apps[desktopfile_mimetypes[j]] == \
desktopfile) {
mimetype_defaults[desktopfile_mimetypes[j]] = desktopfile
}
if (desktopfile in preferred_default_apps) {
preferred_defaults[desktopfile_mimetypes[j]] = desktopfile
}
if (desktopfile in default_apps) {
defaults[desktopfile_mimetypes[j]] = desktopfile
}
for (k = 1; k in desktopfile_categories; k++) {
mimetypes_categories[desktopfile_mimetypes[j], \
desktopfile_categories[k]] = desktopfile
}
generic_mimetypes[desktopfile_mimetypes[j]] = desktopfile
}
}
# determine default mimetype handlers
for (mimetype in generic_mimetypes) {
if (mimetype in mimetype_defaults) {
defaults_list[mimetype] = mimetype_defaults[mimetype]
} else if (mimetype in preferred_defaults) {
defaults_list[mimetype] = preferred_defaults[mimetype]
} else if (mimetype in defaults) {
defaults_list[mimetype] = defaults[mimetype]
} else if ((desktopfile = \
find_preferred_category(mimetypes_categories, categories, \
mimetype)) != "") {
defaults_list[mimetype] = desktopfile
} else if (mimetype in generic_mimetypes) {
defaults_list[mimetype] = generic_mimetypes[mimetype]
}
}
print "# generated by suse-update-mime-defaults from " defaults_conf
print "[Default Applications]"
asorti2(defaults_list, defaults_list_keys)
for (i = 0; i in defaults_list_keys; i++) {
mimetype = defaults_list_keys[i]
printf("%s=%s\n", mimetype, defaults_list[mimetype])
}
}
' >$r/var/cache/gio-2.0/${desktop}-mimeapps.list
done
