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Add bash completion for flags for some build scripts.

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For example, ./build_packages --<tab> will try to complete all supported
./build_packages flags (or print them if completion is non-unique).
This completion could be used outside chroot.

Review URL: http://codereview.chromium.org/661096
This commit is contained in:
Darin Petkov 2010-02-26 13:10:11 -08:00
parent db606797cb
commit d6bf1010bd
1 changed files with 32 additions and 8 deletions
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40
bash_completion
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@ -5,6 +5,32 @@
# Add programmable completion to some Chromium OS build scripts
# Echo a list of -- flags that the current command accepts. The
# function assumes that the command supports shflags' --help flag.
#
_flags()
{
echo $(command "${COMP_WORDS[0]}" --help 2>&1 | \
egrep -o -- --\[^\ \]+: | \
sed 's/://; s/--\[no\]\(.\+\)/--\1 --no\1/')
}
# Complete flags, i.e., current words starting with --. Return 1 if
# the current word doesn't start with --, 0 otherwise.
#
_flag_complete()
{
COMPREPLY=()
local cur="${COMP_WORDS[COMP_CWORD]}"
if [[ "${cur}" == --* ]]; then
COMPREPLY=( $(compgen -W "$(_flags)" -- ${cur}) )
return 0
fi
return 1
}
# Look for "--arg=foo" or "--arg foo" (where foo can be an empty string) in the
# word to be completed. If found, echo "--arg=foo".
#
@ -42,9 +68,7 @@ _argeq()
_board_sysroots()
{
local builddir=/build
if [ ! -d ${builddir} ]; then
echo ""
else
if [ -d ${builddir} ]; then
echo $(command ls "${builddir}")
fi
}
@ -53,11 +77,12 @@ _board_sysroots()
#
_board_sysroot()
{
_flag_complete && return 0
COMPREPLY=()
local arg=$(_argeq --board)
if [[ ${arg} == --board=* ]]; then
COMPREPLY=( $(compgen -W "$(_board_sysroots)" -- ${arg#--board=}) )
return 0
fi
}
@ -74,9 +99,7 @@ complete -o bashdefault -o default -F _board_sysroot \
_board_overlays()
{
local overlaydir=../overlays
if [ ! -d ${overlaydir} ]; then
echo ""
else
if [ -d ${overlaydir} ]; then
echo $(command ls $overlaydir | grep overlay- | sed s,overlay-,,)
fi
}
@ -85,11 +108,12 @@ _board_overlays()
#
_board_overlay()
{
_flag_complete && return 0
COMPREPLY=()
local arg=$(_argeq --board)
if [[ ${arg} == --board=* ]]; then
COMPREPLY=( $(compgen -W "$(_board_overlays)" -- ${arg#--board=}) )
return 0
fi
}