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Update manpage
[code/vcsh.git] / vcsh
diff --git a/vcsh b/vcsh
index d6ee234a2ebd26e4ca10360f44701f304eefb1e4..4761a5340a6d392b8f3f8feacbf07b886a620d7c 100755 (executable)
--- a/vcsh
+++ b/vcsh
 # This should always be the first line of code to facilitate debugging
 [ -n "$VCSH_DEBUG" ] && set -vx
 
-basename() {
-       # Implemented in shell to avoid spawning another process
-       local file
-       file="${1##*/}"
-       [ -z "$2" ] || file="${file%$2}"
-       echo "$file"
-}
 
+# If '.git-HEAD' is appended to the version, you are seeing an unreleased
+# version of vcsh; the master branch is supposed to be clean at all times
+# so you can most likely just use it nonetheless
+VERSION='1.20131229.git-HEAD'
 SELF=$(basename $0)
-VERSION='1.20130909'
 
 fatal() {
        echo "$SELF: fatal: $1" >&2
@@ -40,11 +36,11 @@ while getopts "c:dv" flag; do
                VCSH_DEBUG=1
                echo "debug mode on"
                echo "$SELF $VERSION"
-       elif [ "$1" = '-v' ];then
+       elif [ "$1" = '-v' ]; then
                VCSH_VERBOSE=1
                echo "verbose mode on"
                echo "$SELF $VERSION"
-       elif [ "$1" = '-c' ];then
+       elif [ "$1" = '-c' ]; then
                VCSH_OPTION_CONFIG=$OPTARG
        fi
        shift 1
@@ -61,7 +57,7 @@ source_all() {
 
 # Read configuration and set defaults if anything's not set
 [ -n "$VCSH_DEBUG" ]                  && set -vx
-[ -z "$XDG_CONFIG_HOME" ]             && XDG_CONFIG_HOME="$HOME/.config"
+: ${XDG_CONFIG_HOME:=$HOME/.config}
 
 # Read configuration files if there are any
 [ -r "/etc/vcsh/config" ]             && . "/etc/vcsh/config"
@@ -77,11 +73,12 @@ fi
 [ -n "$VCSH_DEBUG" ]                  && set -vx
 
 # Read defaults
-[ -z "$VCSH_REPO_D" ]                 && VCSH_REPO_D="$XDG_CONFIG_HOME/vcsh/repo.d"
-[ -z "$VCSH_HOOK_D" ]                 && VCSH_HOOK_D="$XDG_CONFIG_HOME/vcsh/hooks-enabled"
-[ -z "$VCSH_BASE" ]                   && VCSH_BASE="$HOME"
-[ -z "$VCSH_GITIGNORE" ]              && VCSH_GITIGNORE='exact'
-[ -z "$VCSH_WORKTREE" ]               && VCSH_WORKTREE='absolute'
+: ${VCSH_REPO_D:=$XDG_CONFIG_HOME/vcsh/repo.d}
+: ${VCSH_HOOK_D:=$XDG_CONFIG_HOME/vcsh/hooks-enabled}
+: ${VCSH_BASE:=$HOME}
+: ${VCSH_GITIGNORE:=exact}
+: ${VCSH_GITATTRIBUTES:=none}
+: ${VCSH_WORKTREE:=absolute}
 
 if [ ! "x$VCSH_GITIGNORE" = 'xexact' ] && [ ! "x$VCSH_GITIGNORE" = 'xnone' ] && [ ! "x$VCSH_GITIGNORE" = 'xrecursive' ]; then
        fatal "'\$VCSH_GITIGNORE' must equal 'exact', 'none', or 'recursive'" 1
@@ -156,15 +153,17 @@ clone() {
                exit
        fi
        git fetch
-       for object in $(git ls-tree -r origin/master | awk '{print $4}'); do
+       hook pre-merge
+       git ls-tree -r --name-only origin/master | (while read object; do
                [ -e "$object" ] &&
                        error "'$object' exists." &&
-                       VCSH_CONFLICT=1;
+                       VCSH_CONFLICT=1
        done
-       [ "$VCSH_CONFLICT" = '1' ] &&
+       [ "$VCSH_CONFLICT" = '1' ]) &&
                fatal "will stop after fetching and not try to merge!
-  Once this situation has been resolved, run 'vcsh run $VCSH_REPO_NAME git pull' to finish cloning.\n" 17
+  Once this situation has been resolved, run 'vcsh run $VCSH_REPO_NAME git pull' to finish cloning." 17
        git merge origin/master
+       hook post-merge
        hook post-clone
        retire
        hook post-clone-retired
@@ -177,6 +176,7 @@ commit() {
                export GIT_DIR="$VCSH_REPO_D/$VCSH_REPO_NAME.git"
                use
                git commit --untracked-files=no --quiet
+               VCSH_COMMAND_RETURN_CODE=$?
                echo
        done
        hook post-commit
@@ -225,7 +225,7 @@ init() {
        [ ! -e "$GIT_DIR" ] || fatal "'$GIT_DIR' exists" 10
        mkdir -p "$VCSH_BASE" || fatal "could not create '$VCSH_BASE'" 50
        cd "$VCSH_BASE" || fatal "could not enter '$VCSH_BASE'" 11
-       git init
+       git init --shared=0600
        upgrade
        hook post-init
 }
@@ -255,10 +255,11 @@ list_tracked_by() {
 pull() {
        hook pre-pull
        for VCSH_REPO_NAME in $(list); do
-               echo -n "$VCSH_REPO_NAME: "
+               printf "$VCSH_REPO_NAME: "
                export GIT_DIR="$VCSH_REPO_D/$VCSH_REPO_NAME.git"
                use
                git pull
+               VCSH_COMMAND_RETURN_CODE=$?
                echo
        done
        hook post-pull
@@ -267,10 +268,11 @@ pull() {
 push() {
        hook pre-push
        for VCSH_REPO_NAME in $(list); do
-               echo -n "$VCSH_REPO_NAME: "
+               printf "$VCSH_REPO_NAME: "
                export GIT_DIR="$VCSH_REPO_D/$VCSH_REPO_NAME.git"
                use
                git push
+               VCSH_COMMAND_RETURN_CODE=$?
                echo
        done
        hook post-push
@@ -288,7 +290,7 @@ rename() {
        # Now that the repository has been renamed, we need to fix up its configuration
        # Overwrite old name..
        GIT_DIR="$GIT_DIR_NEW"
-       $VCSH_REPO_NAME="$VCSH_REPO_NAME_NEW"
+       VCSH_REPO_NAME="$VCSH_REPO_NAME_NEW"
        # ..and clobber all old configuration
        upgrade
 }
@@ -297,6 +299,7 @@ run() {
        hook pre-run
        use
        "$@"
+       VCSH_COMMAND_RETURN_CODE=$?
        hook post-run
 }
 
@@ -305,12 +308,14 @@ status() {
                export GIT_DIR="$VCSH_REPO_D/$VCSH_REPO_NAME.git"
                use
                git status --short --untracked-files='no'
+               VCSH_COMMAND_RETURN_CODE=$?
        else
                for VCSH_REPO_NAME in $(list); do
                        echo "$VCSH_REPO_NAME:"
                        export GIT_DIR="$VCSH_REPO_D/$VCSH_REPO_NAME.git"
                        use
                        git status --short --untracked-files='no'
+                       VCSH_COMMAND_RETURN_CODE=$?
                        echo
                done
        fi
@@ -330,9 +335,11 @@ upgrade() {
                git config core.worktree "$VCSH_BASE"
        fi
        [ ! "x$VCSH_GITIGNORE" = 'xnone' ] && git config core.excludesfile ".gitignore.d/$VCSH_REPO_NAME"
-       git config vcsh.vcsh         'true'
+       [ ! "x$VCSH_GITATTRIBUTES" = 'xnone' ] && git config core.attributesfile ".gitattributes.d/$VCSH_REPO_NAME"
+       git config vcsh.vcsh 'true'
        use
        [ -e "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME" ] && git add -f "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME"
+       [ -e "$VCSH_BASE/.gitattributes.d/$VCSH_REPO_NAME" ] && git add -f "$VCSH_BASE/.gitattributes.d/$VCSH_REPO_NAME"
        hook post-upgrade
 }
 
@@ -358,6 +365,8 @@ write_gitignore() {
 
        use
        cd "$VCSH_BASE" || fatal "could not enter '$VCSH_BASE'" 11
+       OLDIFS="$IFS"
+       IFS=$(printf '\n\t')
        gitignores=$(for file in $(git ls-files); do
                while true; do
                        echo $file; new="${file%/*}"
@@ -367,8 +376,9 @@ write_gitignore() {
        done | sort -u)
 
        # Contrary to GNU mktemp, mktemp on BSD/OSX requires a template for temp files
-       # Use the template GNU mktemo defaults to
-       tempfile=$(mktemp tmp.XXXXXXXXXX) || fatal "could not create tempfile" 51
+       # Using a template makes GNU mktemp default to $PWD and not #TMPDIR for tempfile location
+       # To make every OS happy, set full path explicitly
+       tempfile=$(mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX") || fatal "could not create tempfile: '${tempfile}'" 51
 
        echo '*' > "$tempfile" || fatal "could not write to '$tempfile'" 57
        for gitignore in $gitignores; do
@@ -377,6 +387,7 @@ write_gitignore() {
                        { echo "$gitignore/*" | sed 's@^@!/@' >> "$tempfile" || fatal "could not write to '$tempfile'" 57; }
                fi
        done
+       IFS="$OLDIFS"
        if diff -N "$tempfile" "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME" > /dev/null; then
                rm -f "$tempfile" || error "could not delete '$tempfile'"
                exit
@@ -390,46 +401,70 @@ write_gitignore() {
                fatal "could not move '$tempfile' to '$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME'" 53
 }
 
-if [ "$1" = 'clone' ]; then
-       [ -z "$2" ] && fatal "$1: please specify a remote" 1
-       export VCSH_COMMAND="$1"
+debug $(git version)
+
+if [ ! "x$VCSH_GITIGNORE" = 'xexact' ] && [ ! "x$VCSH_GITIGNORE" = 'xnone' ] && [ ! "x$VCSH_GITIGNORE" = 'xrecursive' ]; then
+       fatal "'\$VCSH_GITIGNORE' must equal 'exact', 'none', or 'recursive'" 1
+fi
+
+export VCSH_COMMAND="$1"
+
+case "$VCSH_COMMAND" in
+       clon|clo|cl) VCSH_COMMAND=clone;;
+       commi|comm|com|co) VCSH_COMMAND=commit;;
+       delet|dele|del|de) VCSH_COMMAND=delete;;
+       ente|ent|en) VCSH_COMMAND=enter;;
+       hel|he) VCSH_COMMAND=help;;
+       ini|in) VCSH_COMMAND=init;;
+       pul) VCSH_COMMAND=pull;;
+       pus) VCSH_COMMAND=push;;
+       renam|rena|ren|re) VCSH_COMMAND=rename;;
+       ru) VCSH_COMMAND=run;;
+       statu|stat|sta|st) VCSH_COMMAND=status;;
+       upgrad|upgra|upgr|up) VCSH_COMMAND=upgrade;;
+       versio|versi|vers|ver|ve) VCSH_COMMAND=version;;
+       which|whi|wh) VCSH_COMMAND=which;;
+       write|writ|wri|wr) VCSH_COMMAND=write-gitignore;;
+esac    
+
+if [ "$VCSH_COMMAND" = 'clone' ]; then
+       [ -z "$2" ] && fatal "$VCSH_COMMAND: please specify a remote" 1
        GIT_REMOTE="$2"
-       [ -n "$3" ] && VCSH_REPO_NAME="$3" || VCSH_REPO_NAME=$(basename "$GIT_REMOTE" .git)
+       [ -n "$3" ] && VCSH_REPO_NAME="$3" || VCSH_REPO_NAME=$(basename "${GIT_REMOTE#*:}" .git)
+       [ -z "$VCSH_REPO_NAME" ] && fatal "$VCSH_COMMAND: could not determine repository name" 1
        export VCSH_REPO_NAME
        export GIT_DIR="$VCSH_REPO_D/$VCSH_REPO_NAME.git"
-elif [ "$1" = 'version' ]; then
+elif [ "$VCSH_COMMAND" = 'version' ]; then
        echo "$SELF $VERSION"
+       git version
        exit
-elif [ "$1" = 'which' ]; then
-       [ -z "$2" ] && fatal "$1: please specify a filename" 1
-       [ -n "$3" ] && fatal "$1: too many parameters" 1
-       export VCSH_COMMAND="$1"
+elif [ "$VCSH_COMMAND" = 'which' ]; then
+       [ -z "$2" ] && fatal "$VCSH_COMMAND: please specify a filename" 1
+       [ -n "$3" ] && fatal "$VCSH_COMMAND: too many parameters" 1
        export VCSH_COMMAND_PARAMETER="$2"
-elif [ "$1" = 'delete' ]           ||
-     [ "$1" = 'enter' ]            ||
-     [ "$1" = 'init' ]             ||
-     [ "$1" = 'list-tracked-by' ]  ||
-     [ "$1" = 'rename' ]           ||
-     [ "$1" = 'run' ]              ||
-     [ "$1" = 'upgrade' ]          ||
-     [ "$1" = 'write-gitignore' ]; then
-       [ -z $2 ]                      && fatal "$1: please specify repository to work on" 1
-       [ "$1" = 'rename' -a -z "$3" ] && fatal "$1: please specify a target name" 1
-       [ "$1" = 'run'    -a -z "$3" ] && fatal "$1: please specify a command" 1
-       export VCSH_COMMAND="$1"
+elif [ "$VCSH_COMMAND" = 'delete' ]           ||
+     [ "$VCSH_COMMAND" = 'enter' ]            ||
+     [ "$VCSH_COMMAND" = 'init' ]             ||
+     [ "$VCSH_COMMAND" = 'list-tracked-by' ]  ||
+     [ "$VCSH_COMMAND" = 'rename' ]           ||
+     [ "$VCSH_COMMAND" = 'run' ]              ||
+     [ "$VCSH_COMMAND" = 'upgrade' ]          ||
+     [ "$VCSH_COMMAND" = 'write-gitignore' ]; then
+       [ -z $2 ]                                 && fatal "$VCSH_COMMAND: please specify repository to work on" 1
+       [ "$VCSH_COMMAND" = 'rename' -a -z "$3" ] && fatal "$VCSH_COMMAND: please specify a target name" 1
+       [ "$VCSH_COMMAND" = 'run'    -a -z "$3" ] && fatal "$VCSH_COMMAND: please specify a command" 1
        export VCSH_REPO_NAME="$2"
        export GIT_DIR="$VCSH_REPO_D/$VCSH_REPO_NAME.git"
        [ "$VCSH_COMMAND" = 'rename' ] && { export VCSH_REPO_NAME_NEW="$3";
                                            export GIT_DIR_NEW="$VCSH_REPO_D/$VCSH_REPO_NAME_NEW.git"; }
        [ "$VCSH_COMMAND" = 'run' ]    && shift 2
-elif [ "$1" = 'commit' ] ||
-     [ "$1" = 'list' ] ||
-     [ "$1" = 'list-tracked' ] ||
-     [ "$1" = 'pull' ] ||
-     [ "$1" = 'push' ]; then
-       export VCSH_COMMAND="$1"
-elif [ "$1" = 'status' ]; then
-       export VCSH_COMMAND="$1"
+elif [ "$VCSH_COMMAND" = 'commit' ] ||
+     [ "$VCSH_COMMAND" = 'list' ] ||
+     [ "$VCSH_COMMAND" = 'list-tracked' ] ||
+     [ "$VCSH_COMMAND" = 'pull' ] ||
+     [ "$VCSH_COMMAND" = 'push' ]; then
+       :
+elif [ "$VCSH_COMMAND" = 'status' ]; then
        export VCSH_REPO_NAME="$2"
 elif [ -n "$2" ]; then
        export VCSH_COMMAND='run'
@@ -438,7 +473,7 @@ elif [ -n "$2" ]; then
        [ -d $GIT_DIR ] || { help; exit 1; }
        shift 1
        set -- "git" "$@"
-elif [ -n "$1" ]; then
+elif [ -n "$VCSH_COMMAND" ]; then
        export VCSH_COMMAND='enter'
        export VCSH_REPO_NAME="$1"
        export GIT_DIR="$VCSH_REPO_D/$VCSH_REPO_NAME.git"
@@ -469,6 +504,7 @@ check_dir() {
 
 check_dir "$VCSH_REPO_D"
 [ ! "x$VCSH_GITIGNORE" = 'xnone' ] && check_dir "$VCSH_BASE/.gitignore.d"
+[ ! "x$VCSH_GITATTRIBUTES" = 'xnone' ] && check_dir "$VCSH_BASE/.gitattributes.d"
 
 verbose "$VCSH_COMMAND begin"
 export VCSH_COMMAND=$(echo $VCSH_COMMAND | sed 's/-/_/g')
@@ -476,3 +512,4 @@ hook pre-command
 $VCSH_COMMAND "$@"
 hook post-command
 verbose "$VCSH_COMMAND end, exiting"
+exit $VCSH_COMMAND_RETURN_CODE