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Rename `vcsh seed-gitignore` to `vcsh write-gitignore`
[code/vcsh.git] / vcsh
diff --git a/vcsh b/vcsh
index 59c423732e934b8bc77712a6870e9ad430a4b4b7..0a9e52dc64fe8bf0fc98fc039858473fd6b8f640 100755 (executable)
--- a/vcsh
+++ b/vcsh
@@ -1,6 +1,6 @@
 #!/bin/sh
 
 #!/bin/sh
 
-[ -n "$VCSH_DEBUG" ]      && set -x
+[ -n "$VCSH_DEBUG" ]      && set -vx
 [ -z "$XDG_CONFIG_HOME" ] && XDG_CONFIG_HOME="$HOME/.config"
 [ -z "$VCSH_BASE" ]       && VCSH_BASE="$XDG_CONFIG_HOME/vcsh/repo.d"
 
 [ -z "$XDG_CONFIG_HOME" ] && XDG_CONFIG_HOME="$HOME/.config"
 [ -z "$VCSH_BASE" ]       && VCSH_BASE="$XDG_CONFIG_HOME/vcsh/repo.d"
 
@@ -16,15 +16,20 @@ help() {
    enter                Enter repository; spawn new $SHELL
    init <repo>          Initialize a new repository
    list                 List all repositories
    enter                Enter repository; spawn new $SHELL
    init <repo>          Initialize a new repository
    list                 List all repositories
+   list-tracked         List all files tracked by vcsh
+   list-tracked-by \\
+        <repo>          List files tracked by a repository
+   rename <repo> \\
+          <newname>     Rename repository
    run <repo> \\
        <command>        Use this repository
    run <repo> \\
        <command>        Use this repository
-
-   seed-gitignore \\
-   <repo>               Seed .gitignore.d/<repo> from git ls-files
    setup                Set up repository with recommended settings
    setup                Set up repository with recommended settings
+   write-gitignore \\
+   <repo>               Write .gitignore.d/<repo> via git ls-files
 
    <repo> <git command> Special command that allows you to run git commands
                         directly without having to type so much ;)" >&2
 
    <repo> <git command> Special command that allows you to run git commands
                         directly without having to type so much ;)" >&2
+   <repo>               Special command that enters a repository
 }
 
 debug() {
 }
 
 debug() {
@@ -35,100 +40,20 @@ verbose() {
        if [ -n "$VCSH_DEBUG" ] || [ -n "$VCSH_VERBOSE" ]; then echo "$SELF: verbose: $@"; fi
 }
 
        if [ -n "$VCSH_DEBUG" ] || [ -n "$VCSH_VERBOSE" ]; then echo "$SELF: verbose: $@"; fi
 }
 
-error () {
-       echo "$SELF: error: $1" >&2
-}
-
-fatal () {
-       echo "$SELF: fatal error: $1" >&2
+fatal() {
+       echo "$SELF: fatal: $1" >&2
        exit $2
 }
 
        exit $2
 }
 
-setup() {
-       git config core.worktree     "$GIT_WORK_TREE"
-       git config core.excludesfile ".gitignore.d/$VCSH_REPO_NAME"
-       git config vcsh.vcsh         'true'
-       touch   "$HOME/.gitignore.d/$VCSH_REPO_NAME"
-       git add "$HOME/.gitignore.d/$VCSH_REPO_NAME"
-}
-
-init() {
-       verbose "init() begin"
-       [ ! -e "$GIT_DIR" ] || fatal "$GIT_DIR exists" 10
-       export GIT_WORK_TREE="$HOME"
-       mkdir -p "$GIT_WORK_TREE"
-       cd "$GIT_WORK_TREE" || fatal "could not enter $GIT_WORK_TREE" 11
-       cd "$GIT_WORK_TREE"
-       git init
-       setup
-       verbose "init() end"
+error() {
+       echo "$SELF: error: $1" >&2
 }
 
 }
 
-use() {
-       verbose "use() begin"
-       if [ ! -d "$GIT_DIR" ]; then
-               error "no repository found for '$VCSH_REPO_NAME'"
-               return 12
-       fi
-       export GIT_DIR
-       export GIT_WORK_TREE="$(git config --get core.worktree)"
-       export VCSH_DIRECTORY="$VCSH_REPO_NAME"
-       verbose "use() end"
+info() {
+       echo "$SELF: info: $1"
 }
 
 }
 
-
-if [ "$1" = 'clone' ]; then
-       export VCSH_COMMAND="$1"
-       GIT_REMOTE="$2"
-       export GIT_REMOTE
-       VCSH_REPO_NAME="$3"
-       [ -z "$VCSH_REPO_NAME" ] && VCSH_REPO_NAME=$(basename "$GIT_REMOTE" .git)
-       export VCSH_REPO_NAME
-       export GIT_DIR="$VCSH_BASE/$VCSH_REPO_NAME.git"
-elif [ "$1" = 'delete' ] ||
-     [ "$1" = 'enter' ] ||
-     [ "$1" = 'init' ] ||
-     [ "$1" = 'run' ] ||
-     [ "$1" = 'seed-gitignore' ] ||
-     [ "$1" = 'setup' ]; then
-       [ -z $2 ] && fatal "$1: please specify repository to work on" 1
-       export VCSH_COMMAND="$1"
-       export VCSH_REPO_NAME="$2"
-       export GIT_DIR="$VCSH_BASE/$VCSH_REPO_NAME.git"
-       shift 2
-       export VCSH_EXTERNAL_COMMAND="$*"
-       if [ "$VCSH_COMMAND" = 'run' ]; then
-               [ -z "$VCSH_EXTERNAL_COMMAND" ] && fatal "$1 $2: please specify a command" 1
-       fi
-elif [ "$1" = 'help' ] ||
-     [ "$1" = 'list' ]; then
-       export VCSH_COMMAND="$1"
-else
-       [ -z $1 ] && help && exit 0
-       export VCSH_COMMAND='run'
-       export VCSH_REPO_NAME="$1"
-       export GIT_DIR="$VCSH_BASE/$VCSH_REPO_NAME.git"
-       [ -d $GIT_DIR ] || { help; exit 1; }
-       shift 1
-       export VCSH_EXTERNAL_COMMAND="git $*"
-fi
-
-
-for check_directory in "$VCSH_BASE" "$HOME/.gitignore.d"
-do
-       if [ ! -d "$check_directory" ]; then
-               if [ -e "$check_directory" ]; then
-                       fatal "$check_directory exists but is not a directory" 13
-               else
-                       echo "$SELF: info: attempting to create $check_directory"
-                       mkdir -p "$check_directory" || fatal "could not create $check_directory" 50
-               fi
-       fi
-done
-
-
-if [ "$VCSH_COMMAND" = 'clone' ]; then
-       verbose "clone begin"
+clone() {
        init
        git remote add origin "$GIT_REMOTE"
        git config branch.master.remote origin
        init
        git remote add origin "$GIT_REMOTE"
        git config branch.master.remote origin
@@ -136,25 +61,19 @@ if [ "$VCSH_COMMAND" = 'clone' ]; then
        git fetch
        for object in $(git ls-tree -r origin/master | awk '{print $4}'); do
                [ -e "$object" ] &&
        git fetch
        for object in $(git ls-tree -r origin/master | awk '{print $4}'); do
                [ -e "$object" ] &&
-                       error "$object exists." &&
+                       error "'$object' exists." &&
                        VCSH_CONFLICT=1;
        done
        [ "$VCSH_CONFLICT" = '1' ] &&
                fatal "will stop after fetching and not try to merge!
                        VCSH_CONFLICT=1;
        done
        [ "$VCSH_CONFLICT" = '1' ] &&
                fatal "will stop after fetching and not try to merge!
-  Once this situation has been resolved, run 'vcsh run <foo> git pull' to finish cloning.\n" 17
+  Once this situation has been resolved, run 'vcsh run $VCSH_REPO_NAME git pull' to finish cloning.\n" 17
        git merge origin/master
        git merge origin/master
-       verbose "clone end"
-
-#elif [ "$VCSH_COMMAND" = 'help' ] || [ "$#" -eq 0 ]; then
-elif [ "$VCSH_COMMAND" = 'help' ]; then
-       help
-
-elif [ "$VCSH_COMMAND" = 'delete' ]; then
-       verbose "delete begin"
-       old_dir="$PWD"
-       cd "$HOME"
-       use || exit $?
-       echo "$SELF: info: This operation WILL DETROY DATA!"
+}
+
+delete() {
+       cd "$HOME" || fatal "could not enter '$HOME'" 11
+       use
+       info "This operation WILL DETROY DATA!"
        files=$(git ls-files)
        echo "These files will be deleted:
 
        files=$(git ls-files)
        echo "These files will be deleted:
 
@@ -165,43 +84,80 @@ To continue, type \"Yes, do as I say\""
        read answer
        [ "x$answer" = "xYes, do as I say" ] || exit 16
        for file in $files; do
        read answer
        [ "x$answer" = "xYes, do as I say" ] || exit 16
        for file in $files; do
-               rm -f $file || echo "$SELF: info: could not delete '$file', continuing with deletion"
+               rm -f $file || info "could not delete '$file', continuing with deletion"
        done
        done
-       rm -rf "$GIT_DIR" || echo "$SELF: info: could not delete '$GIT_DIR'"
-       cd "$old_dir"
-       verbose "delete end"
+       rmdir "$GIT_DIR" || error "could not delete '$GIT_DIR'"
+}
 
 
-elif [ "$VCSH_COMMAND" = 'enter' ]; then
-       verbose "enter begin"
-       use || exit $?
+enter() {
+       use
        $SHELL
        $SHELL
-       verbose "enter end"
+}
 
 
-elif [ "$VCSH_COMMAND" = 'init' ]; then
-       verbose "init begin"
-       init
-       verbose "init end"
+git_dir_exists() {
+       [ -d "$GIT_DIR" ] || fatal "no repository found for '$VCSH_REPO_NAME'" 12
+}
 
 
-elif [ "$VCSH_COMMAND" = 'list' ]; then
-       verbose "list begin"
+init() {
+       [ ! -e "$GIT_DIR" ] || fatal "'$GIT_DIR' exists" 10
+       export GIT_WORK_TREE="$HOME"
+       mkdir -p "$GIT_WORK_TREE" || fatal "could not create '$GIT_WORK_TREE'" 50
+       cd "$GIT_WORK_TREE" || fatal "could not enter '$GIT_WORK_TREE'" 11
+       git init
+       setup
+}
+
+list() {
        for i in "$VCSH_BASE"/*.git; do
                echo $(basename "$i" .git)
        done
        for i in "$VCSH_BASE"/*.git; do
                echo $(basename "$i" .git)
        done
-       verbose "list end"
+}
+
+get_files() {
+       export GIT_DIR="$VCSH_BASE/$VCSH_REPO_NAME.git"
+       git ls-files
+}
+
+list_tracked() {
+       for VCSH_REPO_NAME in $(list); do
+               get_files
+       done | sort -u
+}
 
 
-elif [ "$VCSH_COMMAND" = 'run' ]; then
-       verbose "run begin"
-       use || exit $?
+list_tracked_by() {
+       use
+       git ls-files | sort -u
+}
+
+rename() {
+       git_dir_exists
+       [ -d "$GIT_DIR_NEW" ] && fatal "'$GIT_DIR_NEW' exists" 54
+       mv -f "$GIT_DIR" "$GIT_DIR_NEW" || fatal "Could not mv '$GIT_DIR' '$GIT_DIR_NEW'" 52
+
+}
+
+run() {
+       use
        $VCSH_EXTERNAL_COMMAND
        $VCSH_EXTERNAL_COMMAND
-       verbose "run end"
-
-elif [ "$VCSH_COMMAND" = 'seed-gitignore' ]; then
-       verbose "seed-gitignore begin"
-       use || exit $?
-       # Switching directory as this has to be executed from $HOME to be of any use.
-       # Going back into old directory at the end in case `vcsh use` is reactivated.
-       old_dir="$PWD"
-       cd "$HOME"
+}
+
+setup() {
+       use
+       git config core.worktree     "$GIT_WORK_TREE"
+       git config core.excludesfile ".gitignore.d/$VCSH_REPO_NAME"
+       git config vcsh.vcsh         'true'
+       [ -e "$HOME/.gitignore.d/$VCSH_REPO_NAME" ] && git add -f "$HOME/.gitignore.d/$VCSH_REPO_NAME"
+}
+
+use() {
+       git_dir_exists
+       export GIT_WORK_TREE="$(git config --get core.worktree)"
+       export VCSH_DIRECTORY="$VCSH_REPO_NAME"
+}
+
+write_gitignore() {
+       use
+       cd "$HOME" || fatal "could not enter '$HOME'" 11
        gitignores=$(for file in $(git ls-files); do
                while true; do
                        echo $file; new="${file%/*}"
        gitignores=$(for file in $(git ls-files); do
                while true; do
                        echo $file; new="${file%/*}"
@@ -210,33 +166,89 @@ elif [ "$VCSH_COMMAND" = 'seed-gitignore' ]; then
                done;
        done | sort -u)
        tempfile=$(mktemp) || fatal "could not create tempfile" 51
                done;
        done | sort -u)
        tempfile=$(mktemp) || fatal "could not create tempfile" 51
-       echo '*' > "$tempfile"
+       echo '*' > "$tempfile" || fatal "could not write to '$tempfile'" 57
        for gitignore in $gitignores; do
        for gitignore in $gitignores; do
-               echo "$gitignore" | sed 's/^/!/' >> "$tempfile"
-               [ -d "$gitignore" ] && echo "$gitignore/*" | sed 's/^/!/'>> "$tempfile"
+               echo "$gitignore" | sed 's/^/!/' >> "$tempfile" || fatal "could not write to '$tempfile'" 57
+               [ -d "$gitignore" ] && { echo "$gitignore/*" | sed 's/^/!/' >> "$tempfile" || fatal "could not write to '$tempfile'" 57; }
        done
        done
-       diff -N "$tempfile" "$HOME/.gitignore.d/$VCSH_REPO_NAME" > /dev/null &&
-               rm -f "$tempfile" &&
+       if diff -N "$tempfile" "$HOME/.gitignore.d/$VCSH_REPO_NAME" > /dev/null; then
+               rm -f "$tempfile" || error "could not delete '$tempfile'"
                exit
                exit
+       fi
        if [ -e "$HOME/.gitignore.d/$VCSH_REPO_NAME" ]; then
        if [ -e "$HOME/.gitignore.d/$VCSH_REPO_NAME" ]; then
-               echo "$SELF: info: $HOME/.gitignore.d/$VCSH_REPO_NAME differs from new data, moving it to $HOME/.gitignore.d/$VCSH_REPO_NAME.bak"
+               info "'$HOME/.gitignore.d/$VCSH_REPO_NAME' differs from new data, moving it to '$HOME/.gitignore.d/$VCSH_REPO_NAME.bak'"
                mv -f "$HOME/.gitignore.d/$VCSH_REPO_NAME" "$HOME/.gitignore.d/$VCSH_REPO_NAME.bak" ||
                mv -f "$HOME/.gitignore.d/$VCSH_REPO_NAME" "$HOME/.gitignore.d/$VCSH_REPO_NAME.bak" ||
-                       fatal "could not move $HOME/.gitignore.d/$VCSH_REPO_NAME to $HOME/.gitignore.d/$VCSH_REPO_NAME.bak" 53
+                       fatal "could not move '$HOME/.gitignore.d/$VCSH_REPO_NAME' to '$HOME/.gitignore.d/$VCSH_REPO_NAME.bak'" 53
        fi
        mv -f "$tempfile" "$HOME/.gitignore.d/$VCSH_REPO_NAME" ||
        fi
        mv -f "$tempfile" "$HOME/.gitignore.d/$VCSH_REPO_NAME" ||
-               fatal "could not move $tempfile to $HOME/.gitignore.d/$VCSH_REPO_NAME" 53
-       cd "$old_dir"
-       verbose "seed-gitignore end"
-
-elif [ "$VCSH_COMMAND" = 'setup' ]; then
-       verbose "seed-gitignore begin"
-       use   || exit $?
-       setup || exit $?
-       verbose "seed-gitignore end"
+               fatal "could not move '$tempfile' to '$HOME/.gitignore.d/$VCSH_REPO_NAME'" 53
+}
 
 
+if [ "$1" = 'clone' ]; then
+       [ -z $2 ] && fatal "$1: please specify a remote" 1
+       export VCSH_COMMAND="$1"
+       GIT_REMOTE="$2"
+       [ -n "$3" ] && VCSH_REPO_NAME="$3" || VCSH_REPO_NAME=$(basename "$GIT_REMOTE" .git)
+       export VCSH_REPO_NAME
+       export GIT_DIR="$VCSH_BASE/$VCSH_REPO_NAME.git"
+elif [ "$1" = 'delete' ] ||
+     [ "$1" = 'enter' ] ||
+     [ "$1" = 'init' ] ||
+     [ "$1" = 'list-tracked-by' ] ||
+     [ "$1" = 'rename' ] ||
+     [ "$1" = 'run' ] ||
+     [ "$1" = 'setup' ] ||
+     [ "$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"
+       export VCSH_REPO_NAME="$2"
+       export GIT_DIR="$VCSH_BASE/$VCSH_REPO_NAME.git"
+       [ "$VCSH_COMMAND" = 'rename' ]         && export GIT_DIR_NEW="$VCSH_BASE/$3.git"
+       [ "$VCSH_COMMAND" = 'run' ] && shift 2 && export VCSH_EXTERNAL_COMMAND="$*"
+       [ "$VCSH_COMMAND" = 'write-gitignore' ]
+elif [ "$1" = 'list' ] ||
+     [ "$1" = 'list-tracked' ]; then
+       export VCSH_COMMAND="$1"
+elif [ -n "$1" -a -n "$2" ]; then
+       export VCSH_COMMAND='run'
+       export VCSH_REPO_NAME="$1"
+       export GIT_DIR="$VCSH_BASE/$VCSH_REPO_NAME.git"
+       [ -d $GIT_DIR ] || { help; exit 1; }
+       shift 1
+       export VCSH_EXTERNAL_COMMAND="git $*"
+elif [ -n "$1" ]; then
+       export VCSH_COMMAND='enter'
+       export VCSH_REPO_NAME="$1"
+       export GIT_DIR="$VCSH_BASE/$VCSH_REPO_NAME.git"
+       [ -d $GIT_DIR ] || { help; exit 1; }
 else
 else
-       verbose "defaulting to calling help()"
-       help
-       fatal "You should never reach this code. File a bug, please." 99
+       # $1 is empty, or 'help'
+       help && exit
+fi
 
 
+# Did we receive a directory instead of a name?
+# Mangle the input to fit normal operation.
+if echo $VCSH_REPO_NAME | grep -q '/'; then
+       export GIT_DIR=$VCSH_REPO_NAME
+       export VCSH_REPO_NAME=$(basename $VCSH_REPO_NAME .git)
 fi
 fi
+
+
+for check_directory in "$VCSH_BASE" "$HOME/.gitignore.d"
+do
+       if [ ! -d "$check_directory" ]; then
+               if [ -e "$check_directory" ]; then
+                       fatal "'$check_directory' exists but is not a directory" 13
+               else
+                       info "attempting to create '$check_directory'"
+                       mkdir -p "$check_directory" || fatal "could not create '$check_directory'" 50
+               fi
+       fi
+done
+
+verbose "$VCSH_COMMAND begin"
+export VCSH_COMMAND=$(echo $VCSH_COMMAND | sed 's/-/_/g')
+$VCSH_COMMAND
+verbose "$VCSH_COMMAND end, exiting"
version controlled RC files

Legalese

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