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-rwxr-xr-xtools/do446
1 files changed, 0 insertions, 446 deletions
diff --git a/tools/do b/tools/do
deleted file mode 100755
index f38a2a7..0000000
--- a/tools/do
+++ /dev/null
@@ -1,446 +0,0 @@
-#!/bin/sh
-#
-# A minimal alternative to djb redo that doesn't support incremental builds.
-# For the full version, visit http://github.com/apenwarr/redo
-#
-# The author disclaims copyright to this source file and hereby places it in
-# the public domain. (2010 12 14; updated 2019 02 24)
-#
-USAGE="
-usage: do [-d] [-x] [-v] [-c] <targets...>
- -d print extra debug messages (mostly about dependency checks)
- -v run .do files with 'set -v'
- -x run .do files with 'set -x'
- -c clean up all old targets before starting
-
- Note: do is an implementation of redo that does *not* check dependencies.
- It will never rebuild a target it has already built, unless you use -c.
-"
-
-# CDPATH apparently causes unexpected 'cd' output on some platforms.
-unset CDPATH
-
-# By default, no output coloring.
-green=""
-bold=""
-plain=""
-
-if [ -n "$TERM" -a "$TERM" != "dumb" ] && tty <&2 >/dev/null 2>&1; then
- green="$(printf '\033[32m')"
- bold="$(printf '\033[1m')"
- plain="$(printf '\033[m')"
-fi
-
-# The 'seq' command is not available on all platforms.
-_seq() {
- local x=0 max="$1"
- while [ "$x" -lt "$max" ]; do
- x=$((x + 1))
- echo "$x"
- done
-}
-
-# Split $1 into a dir part ($_dirsplit_dir) and base filename ($_dirsplit_base)
-_dirsplit() {
- _dirsplit_base=${1##*/}
- _dirsplit_dir=${1%$_dirsplit_base}
-}
-
-# Like /usr/bin/dirname, but avoids a fork and uses _dirsplit semantics.
-qdirname() (
- _dirsplit "$1"
- dir=${_dirsplit_dir%/}
- echo "${dir:-.}"
-)
-
-_dirsplit "$0"
-REDO=$(cd "$(pwd -P)" &&
- cd "${_dirsplit_dir:-.}" &&
- echo "$PWD/$_dirsplit_base")
-export REDO
-_cmd=$_dirsplit_base
-
-DO_TOP=
-if [ -z "$DO_BUILT" ]; then
- export _do_opt_debug=
- export _do_opt_exec=
- export _do_opt_verbose=
- export _do_opt_clean=
-fi
-while getopts 'dxvcj:h?' _opt; do
- case $_opt in
- d) _do_opt_debug=1 ;;
- x) _do_opt_exec=x ;;
- v) _do_opt_verbose=v ;;
- c) _do_opt_clean=1 ;;
- j) ;; # silently ignore, for compat with real redo
- \?|h|*) printf "%s" "$USAGE" >&2
- exit 99
- ;;
- esac
-done
-shift "$((OPTIND - 1))"
-_debug() {
- [ -z "$_do_opt_debug" ] || echo "$@" >&2
-}
-
-if [ -z "$DO_BUILT" -a "$_cmd" != "redo-whichdo" ]; then
- DO_TOP=1
- if [ "$#" -eq 0 ] && [ "$_cmd" = "do" -o "$_cmd" = "redo" ]; then
- set all # only toplevel redo has a default target
- fi
- export DO_STARTDIR="$(pwd -P)"
- # If starting /bin/pwd != $PWD, this will fix it.
- # That can happen when $PWD contains symlinks that the shell is
- # trying helpfully (but unsuccessfully) to hide from the user.
- cd "$DO_STARTDIR" || exit 99
- export DO_BUILT="$PWD/.do_built"
- if [ -z "$_do_opt_clean" -a -e "$DO_BUILT" ]; then
- echo "do: Incremental mode. Use -c for clean rebuild." >&2
- fi
- : >>"$DO_BUILT"
- sort -u "$DO_BUILT" >"$DO_BUILT.new"
- while read f; do
- [ -n "$_do_opt_clean" ] && printf "%s\0%s.did\0" "$f" "$f"
- printf "%s.did.tmp\0" "$f"
- done <"$DO_BUILT.new" |
- xargs -0 rm -f 2>/dev/null
- mv "$DO_BUILT.new" "$DO_BUILT"
- export DO_PATH="$DO_BUILT.dir"
- export PATH="$DO_PATH:$PATH"
- rm -rf "$DO_PATH"
- mkdir "$DO_PATH"
- for d in redo redo-ifchange redo-whichdo; do
- ln -s "$REDO" "$DO_PATH/$d"
- done
- for d in redo-ifcreate redo-stamp redo-always redo-ood \
- redo-targets redo-sources; do
- echo "#!/bin/sh" >"$DO_PATH/$d"
- chmod a+rx "$DO_PATH/$d"
- done
-fi
-
-
-# Chop the "file" part off a /path/to/file pathname.
-# Note that if the filename already ends in a /, we just remove the slash.
-_updir()
-{
- local v="${1%/*}"
- [ "$v" != "$1" ] && echo "$v"
- # else "empty" which means we went past the root
-}
-
-
-# Returns true if $1 starts with $2.
-_startswith()
-{
- [ "${1#"$2"}" != "$1" ]
-}
-
-
-# Returns true if $1 ends with $2.
-_endswith()
-{
- [ "${1%"$2"}" != "$1" ]
-}
-
-
-# Prints $1 if it's absolute, or $2/$1 if $1 is not absolute.
-_abspath()
-{
- local here="$2" there="$1"
- if _startswith "$1" "/"; then
- echo "$1"
- else
- echo "$2/$1"
- fi
-}
-
-
-# Prints $1 as a path relative to $PWD (not starting with /).
-# If it already doesn't start with a /, doesn't change the string.
-_relpath()
-{
- local here="$2" there="$1" out= hadslash=
- #echo "RP start '$there' hs='$hadslash'" >&2
- _startswith "$there" "/" || { echo "$there" && return; }
- [ "$there" != "/" ] && _endswith "$there" "/" && hadslash=/
- here=${here%/}/
- while [ -n "$here" ]; do
- #echo "RP out='$out' here='$here' there='$there'" >&2
- [ "${here%/}" = "${there%/}" ] && there= && break;
- [ "${there#$here}" != "$there" ] && break
- out=../$out
- _dirsplit "${here%/}"
- here=$_dirsplit_dir
- done
- there=${there#$here}
- if [ -n "$there" ]; then
- echo "$out${there%/}$hadslash"
- else
- echo "${out%/}$hadslash"
- fi
-}
-
-
-# Prints a "normalized relative" path, with ".." resolved where possible.
-# For example, a/b/../c will be reduced to just a/c.
-_normpath()
-(
- local path="$1" relto="$2" out= isabs=
- #echo "NP start '$path'" >&2
- if _startswith "$path" "/"; then
- isabs=1
- else
- path="${relto%/}/$path"
- fi
- set -f
- IFS=/
- for d in ${path%/}; do
- #echo "NP out='$out' d='$d'" >&2
- if [ "$d" = ".." ]; then
- out=$(_updir "${out%/}")/
- else
- out=$out$d/
- fi
- done
- #echo "NP out='$out' (done)" >&2
- out=${out%/}
- if [ -n "$isabs" ]; then
- echo "${out:-/}"
- else
- _relpath "${out:-/}" "$relto"
- fi
-)
-
-
-# Prints a "real" path, with all symlinks resolved where possible.
-_realpath()
-{
- local path="$1" relto="$2" isabs= rest=
- if _startswith "$path" "/"; then
- isabs=1
- else
- path="${relto%/}/$path"
- fi
- (
- for d in $(_seq 100); do
- #echo "Trying: $PWD--$path" >&2
- if cd -P "$path" 2>/dev/null; then
- # success
- pwd=$(pwd -P)
- #echo " chdir ok: $pwd--$rest" >&2
- np=$(_normpath "${pwd%/}/$rest" "$relto")
- if [ -n "$isabs" ]; then
- echo "$np"
- else
- _relpath "$np" "$relto"
- fi
- break
- fi
- _dirsplit "${path%/}"
- path=$_dirsplit_dir
- rest="$_dirsplit_base/$rest"
- done
- )
-}
-
-
-# List the possible names for default*.do files in dir $1 matching the target
-# pattern in $2. We stop searching when we find the first one that exists.
-_find_dofiles_pwd()
-{
- local dodir="$1" dofile="$2"
- _startswith "$dofile" "default." || dofile=${dofile#*.}
- while :; do
- dofile=default.${dofile#default.*.}
- echo "$dodir$dofile"
- [ -e "$dodir$dofile" ] && return 0
- [ "$dofile" = default.do ] && break
- done
- return 1
-}
-
-
-# List the possible names for default*.do files in $PWD matching the target
-# pattern in $1. We stop searching when we find the first name that works.
-# If there are no matches in $PWD, we'll search in .., and so on, to the root.
-_find_dofiles()
-{
- local target="$1" dodir= dofile= newdir=
- _debug "find_dofile: '$PWD' '$target'"
- dofile="$target.do"
- echo "$dofile"
- [ -e "$dofile" ] && return 0
-
- # Try default.*.do files, walking up the tree
- _dirsplit "$dofile"
- dodir=$_dirsplit_dir
- dofile=$_dirsplit_base
- [ -n "$dodir" ] && dodir=${dodir%/}/
- [ -e "$dodir$dofile" ] && return 0
- for i in $(_seq 100); do
- [ -n "$dodir" ] && dodir=${dodir%/}/
- #echo "_find_dofiles: '$dodir' '$dofile'" >&2
- _find_dofiles_pwd "$dodir" "$dofile" && return 0
- newdir=$(_realpath "${dodir}.." "$PWD")
- [ "$newdir" = "$dodir" ] && break
- dodir=$newdir
- done
- return 1
-}
-
-
-# Print the last .do file returned by _find_dofiles.
-# If that file exists, returns 0, else 1.
-_find_dofile()
-{
- local files="$(_find_dofiles "$1")"
- rv=$?
- #echo "files='$files'" >&2
- [ "$rv" -ne 0 ] && return $rv
- echo "$files" | {
- while read -r linex; do line=$linex; done
- printf "%s\n" "$line"
- }
-}
-
-
-# Actually run the given $dofile with the arguments in $@.
-# Note: you should always run this in a subshell.
-_run_dofile()
-{
- export DO_DEPTH="$DO_DEPTH "
- export REDO_TARGET="$PWD/$target"
- local line1
- set -e
- read line1 <"$PWD/$dofile" || true
- cmd=${line1#"#!/"}
- if [ "$cmd" != "$line1" ]; then
- set -$_do_opt_verbose$_do_opt_exec
- exec /$cmd "$PWD/$dofile" "$@"
- else
- set -$_do_opt_verbose$_do_opt_exec
- # If $dofile is empty, "." might not change $? at
- # all, so we clear it first with ":".
- :; . "$PWD/$dofile"
- fi
-}
-
-
-# Find and run the right .do file, starting in dir $1, for target $2,
-# providing a temporary output file as $3. Renames the temp file to $2 when
-# done.
-_do()
-{
- local dir="$1" target="$1$2" tmp="$1$2.redo.tmp" tdir=
- local dopath= dodir= dofile= ext=
- if [ "$_cmd" = "redo" ] ||
- ( [ ! -e "$target" -o -d "$target" ] &&
- [ ! -e "$target.did" ] ); then
- printf '%sdo %s%s%s%s\n' \
- "$green" "$DO_DEPTH" "$bold" "$target" "$plain" >&2
- dopath=$(_find_dofile "$target")
- if [ ! -e "$dopath" ]; then
- echo "do: $target: no .do file ($PWD)" >&2
- return 1
- fi
- _dirsplit "$dopath"
- dodir=$_dirsplit_dir dofile=$_dirsplit_base
- if _startswith "$dofile" "default."; then
- ext=${dofile#default}
- ext=${ext%.do}
- else
- ext=
- fi
- target=$PWD/$target
- tmp=$PWD/$tmp
- cd "$dodir" || return 99
- target=$(_relpath "$target" "$PWD") || return 98
- tmp=$(_relpath "$tmp" "$PWD") || return 97
- base=${target%$ext}
- tdir=$(qdirname "$target")
- [ ! -e "$DO_BUILT" ] || [ ! -w "$tdir/." ] ||
- : >>"$target.did.tmp"
- # $qtmp is a temporary file used to capture stdout.
- # Since it might be accidentally deleted as a .do file
- # does its work, we create it, then open two fds to it,
- # then immediately delete the name. We use one fd to
- # redirect to stdout, and the other to read from after,
- # because there's no way to fseek(fd, 0) in sh.
- qtmp=$DO_PATH/do.$$.tmp
- (
- rm -f "$qtmp"
- ( _run_dofile "$target" "$base" "$tmp" >&3 3>&- 4<&- )
- rv=$?
- if [ $rv != 0 ]; then
- printf "do: %s%s\n" "$DO_DEPTH" \
- "$target: got exit code $rv" >&2
- rm -f "$tmp.tmp" "$tmp.tmp2" "$target.did"
- return $rv
- fi
- echo "$PWD/$target" >>"$DO_BUILT"
- if [ ! -e "$tmp" ]; then
- # if $3 wasn't created, copy from stdout file
- cat <&4 >$tmp
- # if that's zero length too, forget it
- [ -s "$tmp" ] || rm -f "$tmp"
- fi
- ) 3>$qtmp 4<$qtmp # can't use "|| return" here...
- # ...because "|| return" would mess up "set -e" inside the ()
- # on some shells. Running commands in "||" context, even
- # deep inside, will stop "set -e" from functioning.
- rv=$?
- [ "$rv" = 0 ] || return "$rv"
- mv "$tmp" "$target" 2>/dev/null
- [ -e "$target.did.tmp" ] &&
- mv "$target.did.tmp" "$target.did" ||
- : >>"$target.did"
- else
- _debug "do $DO_DEPTH$target exists." >&2
- fi
-}
-
-
-# Implementation of the "redo" command.
-_redo()
-{
- local i startdir="$PWD" dir base
- set +e
- for i in "$@"; do
- i=$(_abspath "$i" "$startdir")
- (
- cd "$DO_STARTDIR" || return 99
- i=$(_realpath "$(_relpath "$i" "$PWD")" "$PWD")
- _dirsplit "$i"
- dir=$_dirsplit_dir base=$_dirsplit_base
- _do "$dir" "$base"
- )
- [ "$?" = 0 ] || return 1
- done
-}
-
-
-# Implementation of the "redo-whichdo" command.
-_whichdo()
-{
- _find_dofiles "$1"
-}
-
-
-case $_cmd in
- do|redo|redo-ifchange) _redo "$@" ;;
- redo-whichdo) _whichdo "$1" ;;
- do.test) ;;
- *) printf "do: '%s': unexpected redo command" "$_cmd" >&2; exit 99 ;;
-esac
-[ "$?" = 0 ] || exit 1
-
-if [ -n "$DO_TOP" ]; then
- if [ -n "$_do_opt_clean" ]; then
- echo "do: Removing stamp files..." >&2
- [ ! -e "$DO_BUILT" ] ||
- while read f; do printf "%s.did\0" "$f"; done <"$DO_BUILT" |
- xargs -0 rm -f 2>/dev/null
- fi
-fi