diff options
Diffstat (limited to 'minimal')
| -rwxr-xr-x | minimal/do | 446 |
1 files changed, 0 insertions, 446 deletions
diff --git a/minimal/do b/minimal/do deleted file mode 100755 index f38a2a7..0000000 --- a/minimal/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 |