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#!/hint/bash
################################################################################
# Added shell features #
################################################################################
##
# Usage: dquote STRING
# Safely double-quotes a string.
# It escapes ways to execute code, but not variables.
##
dquote() {
local str=$1
str="${str//\\/\\\\}" # backslash
str="${str//\"/\\\"}" # dquote
str="${str//\$(/\\\$(}" # $(...)
str="${str//\`/\\\`}" # backtick
printf '"%s"\n' "$str"
}
##
# Usage: expand_variables
# Expands variables read from /dev/stdin
##
expand_variables() (
IFS=''
while read -r line; do
eval printf "'%s\n'" "$(dquote "$line")"
done
)
is_mounted() {
local dir="$(readlink -m $1)"
local mntpnt="$(cut -d' ' -f2 /proc/mounts|grep -Fx -- "$dir")"
[[ $dir = "$mntpnt" ]]
}
################################################################################
# PATH manipulation #
################################################################################
##
# Usage: path_ls PATH
# List executables in PATH (PATH is delimited by `:')
##
path_ls() {
local dirs
IFS=: dirs=($@)
find -L "${dirs[@]}" -maxdepth 1 -type f -executable -printf '%f\n' 2>/dev/null | sort -u
}
##
# Usage: path_which PATH PROGRAM
# Find the full path of PROGRAM by searching PATH
##
path_which() {
local mypath=$1
local prog=$2
local which=$(which which)
PATH="$mypath" "$which" -- "$prog" 2>/dev/null
}
################################################################################
# wmii convenience functions #
################################################################################
##
# Usage: lstags
# Lists wmii tags
##
lstags() {
ls "$WMII_DIR/tag" | sed -e 's,/$,,' -e '/^sel$/d'
}
################################################################################
# X11 functions #
################################################################################
##
# Usage: connected_to_x_server
# Return status indicates whether there is an X server at $DISPLAY
##
connected_to_x_server() {
xdpyinfo &>/dev/null
}
################################################################################
# My wmii configuration #
################################################################################
##
# Usage: scansection SECTION
# Reads the doc comments from a section of wmiirc.
##
scansection() {
local sec=$1
local file=$(conffile config.sh)
# Isolate the section we want.
< "$file" sed -n "/^\s*$sec\s*()/,/^}/{ /##/p }" |
# Parse each line.
while read -r line; do
symbol="$(sed -nr 's/^\s*(.*)\)\s*##.*/\1/p' <<<"$line")"
comment="$(sed -r 's/.*## ?//' <<<"$line")"
if [ -z "$symbol" ]; then
printf '%s\n' "$comment"
else
printf '\t%s\t%s\n' "$(expand_variables <<<"$symbol")" "$comment"
fi
done
}
##
# Usage: conffile FILE
##
conffile() {
echo "$HOME/.wmii-hg/$1"
}
################################################################################
# 9P filesystem #
################################################################################
# Prefer 9pfuse since:
# 1. Linux 9p directory listings are broken on i686
# 2. 9umount doesn't work with recent versions of Linux 9p
if (. /etc/profile.d/plan9.sh || true; type 9pfuse) &>/dev/null; then
. /etc/profile.d/plan9.sh || true
mount.9p() {
9pfuse "$1" "$2"
while ! [[ -f "$2/event" ]]; do :; done
}
umount.9p() {
fusermount -u -z "$1"
}
elif type 9mount &>/dev/null; then
mount.9p() {
9mount -i "$1" "$2"
}
umount.9p() {
9umount "$1"
}
else
>&2 echo "ERROR: I don't know how to mount 9P filesystems"
exit 5 # EXIT_NOTINSTALLED (LSB)
fi
|
