]> git.madduck.net Git - code/vcsh.git/blobdiff - vcsh

madduck's git repository

Every one of the projects in this repository is available at the canonical URL git://git.madduck.net/madduck/pub/<projectpath> — see each project's metadata for the exact URL.

All patches and comments are welcome. Please squash your changes to logical commits before using git-format-patch and git-send-email to patches@git.madduck.net. If you'd read over the Git project's submission guidelines and adhered to them, I'd be especially grateful.

SSH access, as well as push access can be individually arranged.

If you use my repositories frequently, consider adding the following snippet to ~/.gitconfig and using the third clone URL listed for each project:

[url "git://git.madduck.net/madduck/"]
  insteadOf = madduck:

Update changelog, release v0.20120227
[code/vcsh.git] / vcsh
diff --git a/vcsh b/vcsh
index eb852a01aa9103fc4b4b1e953d2c67e20174a290..ba0049e542120cf4931ce3652b9b412808bef2b4 100755 (executable)
--- a/vcsh
+++ b/vcsh
 #!/bin/sh
 
-[ "$VCSH_DEBUG" -gt 0 ] && set -x
+# This program is licensed under the GNU GPL version 2 or later.
+# (c) Richard "RichiH" Hartmann <richih.mailinglist@gmail.com>, 2011-2012
+# For details, see LICENSE. To submit patches, you have to agree to
+# license your code under the GNU GPL version 2 or later.
+
+
+[ -n "$VCSH_DEBUG" ]                  && set -vx
+[ -z "$XDG_CONFIG_HOME" ]             && XDG_CONFIG_HOME="$HOME/.config"
+[ -r "$XDG_CONFIG_HOME/vcsh/config" ] && . "$XDG_CONFIG_HOME/vcsh/config"
+[ -n "$VCSH_DEBUG" ]                  && set -vx
+[ -z "$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'
 
 SELF=$(basename $0)
 
-[ -z "$XDG_CONFIG_HOME" ] && XDG_CONFIG_HOME="$HOME/.config"
-for check_directory in $XDG_CONFIG_HOME $XDG_CONFIG_HOME/vcsh $XDG_CONFIG_HOME/vcsh/repo.d
-do
-       if [ ! -d "$check_directory" ]; then
-               if [ -e "$check_directory" ]; then
-                       echo "$SELF: error: $check_directory exists but is not a directory" >&2
-                       exit 2
-               else
-                       mkdir $check_directory || (echo "$SELF: error: could not create $check_directory" >&2; exit 2)
-               fi
-       fi
-done
+help() {
+       echo "usage: $SELF <args>
 
-VCSH_BASE="$XDG_CONFIG_HOME/vcsh/repo.d"
+   clone <remote> \\
+         [<repo>]       Clone from an existing repository
+   help                 Display this help text
+   delete               Delete an existing repository
+   enter                Enter repository; spawn new instance of \$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
+   setup                Set up repository with recommended settings
+   which <substring>    Find substring in name of any tracked file
+   write-gitignore \\
+   <repo>               Write .gitignore.d/<repo> via git ls-files
+
+   <repo> <git command> Shortcut to run git commands directly
+   <repo>               Shortcut to enter repository" >&2
+}
 
 debug() {
-       [ -n "$VCSH_DEBUG" ] && echo "$SELF: debug: $1"
+       [ -n "$VCSH_DEBUG" ] && echo "$SELF: debug: $@"
 }
 
 verbose() {
-       if [ -n "$VCSH_DEBUG" ] || [ -n "$VCSH_VERBOSE" ]; then echo "$SELF: verbose: $1"; fi
+       if [ -n "$VCSH_DEBUG" ] || [ -n "$VCSH_VERBOSE" ]; then echo "$SELF: verbose: $@"; fi
 }
 
-help() {
-       echo "usage: $SELF <args>
+fatal() {
+       echo "$SELF: fatal: $1" >&2
+       exit $2
+}
 
-   help           Display this help
+error() {
+       echo "$SELF: error: $1" >&2
+}
+
+info() {
+       echo "$SELF: info: $1"
+}
 
-   list           List all repos
+clone() {
+       init
+       git remote add origin "$GIT_REMOTE"
+       git config branch.master.remote origin
+       git config branch.master.merge  refs/heads/master
+       if [ $(git ls-remote origin master 2> /dev/null | wc -l ) -lt 1 ]; then
+               info "remote is empty, not merging anything"
+               exit
+       fi
+       git fetch
+       for object in $(git ls-tree -r origin/master | awk '{print $4}'); do
+               [ -e "$object" ] &&
+                       error "'$object' exists." &&
+                       VCSH_CONFLICT=1;
+       done
+       [ "$VCSH_CONFLICT" = '1' ] &&
+               fatal "will stop after fetching and not try to merge!
+  Once this situation has been resolved, run 'vcsh run $VCSH_REPO_NAME git pull' to finish cloning.\n" 17
+       git merge origin/master
+}
 
-   use <repo>     Use this repository
-   run <repo>
-       <command>  Use this repository
+delete() {
+       cd "$VCSH_BASE" || fatal "could not enter '$VCSH_BASE'" 11
+       use
+       info "This operation WILL DETROY DATA!"
+       files=$(git ls-files)
+       echo "These files will be deleted:
 
-   init           Initialize a new repository
-   clone <remote>
-         [<repo>] Clone from an existing repository
+$files
 
-   exit           Exit vcsh mode" >&2
+AGAIN, THIS WILL DELETE YOUR DATA!
+To continue, type 'Yes, do as I say'"
+       read answer
+       [ "x$answer" = 'xYes, do as I say' ] || exit 16
+       for file in $files; do
+               rm -f $file || info "could not delete '$file', continuing with deletion"
+       done
+       rm -r "$GIT_DIR" || error "could not delete '$GIT_DIR'"
 }
 
-use() {
-       verbose "use() start"
-       REPO_NAME="$1"
-       GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
+enter() {
+       hook pre-enter
+       use
+       $SHELL
+       hook post-enter
+}
 
-       if [ ! -d "$GIT_DIR" ]; then
-               echo E: no repository found for "$REPO_NAME" >&2
-               return 2
-       fi
+git_dir_exists() {
+       [ -d "$GIT_DIR" ] || fatal "no repository found for '$VCSH_REPO_NAME'" 12
+}
 
-       export GIT_DIR
-       export GIT_WORK_TREE="$(git config --get core.worktree)"
-       export VCSH_DIRECTORY="$REPO_NAME"
-       verbose "use() stop"
+hook() {
+       for hook in $VCSH_HOOK_D/$1* $VCSH_HOOK_D/$VCSH_REPO_NAME.$1*; do
+               [ -x "$hook" ] || continue
+               info "executing '$hook'"
+               "$hook"
+       done
 }
 
 init() {
-       verbose "init() start"
-       [ -e "$GIT_DIR" ] &&
-               echo "$SELF: fatal: $GIT_DIR exists" &&
-               return 21
-       export GIT_WORK_TREE="$HOME"
-       mkdir -p $GIT_WORK_TREE
-       cd $GIT_WORK_TREE ||
-               (echo "$SELF: fatal: could not enter $GIT_WORK_TREE" &&
-                exit 20) || exit 20
-       cd $GIT_WORK_TREE
+       [ ! -e "$GIT_DIR" ] || fatal "'$GIT_DIR' exists" 10
+       export GIT_WORK_TREE="$VCSH_BASE"
+       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
-       git config core.worktree $GIT_WORK_TREE
-       verbose "init() stop"
+       setup
 }
 
-leave() {
-       unset GIT_DIR
-       unset GIT_WORK_TREE
-       unset VCSH_DIRECTORY
+list() {
+       for i in "$VCSH_REPO_D"/*.git; do
+               echo $(basename "$i" .git)
+       done
 }
 
-if [ "$1" = 'help' ] || [ "$#" -eq 0 ]; then
-       help
-       [ "$1" = 'help' ]
-       exit $?
+get_files() {
+       export GIT_DIR="$VCSH_REPO_D/$VCSH_REPO_NAME.git"
+       git ls-files
+}
 
-elif [ "$1" = 'list' ]; then
-       verbose "list start"
-       for i in $VCSH_BASE/*.git; do
-               echo $(basename $i .git)
-       done
-       verbose "list stop"
-       exit 0
-
-elif [ "$1" = 'run' ]; then
-       verbose "run start"
-       use $2
-       shift 2
-       "$@"
-       leave
-       verbose "run start"
-       exit 0
-
-elif [ "$1" = 'use' ]; then
-       verbose "use start"
-       if [ -n "$ZSH_VERSION" ]; then
-               if [ -o NO_IGNORE_EOF ]; then
-                       export VCSH_NO_IGNORE_EOF=1
-                       setopt IGNORE_EOF
-               fi
-               vcsh_exit() {
-                       vcsh exit;
-                       zle reset-prompt;
-               }
-               zle -N vcsh_exit
-               bindkey '^d' 'vcsh_exit'
-       fi
-       use $2
-       [ -n "$ZSH_VERSION" ] && [ "$USER" = richih ] && buildPS1
-       verbose "use stop"
-       exit 0
+list_tracked() {
+       for VCSH_REPO_NAME in $(list); do
+               get_files
+       done | sort -u
+}
 
-elif [ "$1" = 'clone' ]; then
-       verbose "clone start"
-       GIT_REMOTE="$2"
-       REPO_NAME="$3"
-       [ -z "$REPO_NAME" ] && REPO_NAME=$(basename $GIT_REMOTE .git)
-       export REPO_NAME
-       export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
-       init
+list_tracked_by() {
+       use
+       git ls-files | sort -u
+}
 
-       git remote add origin $GIT_REMOTE
-       git config branch.master.remote origin
-       git config branch.master.merge  refs/heads/master
-       git fetch
-       for object in $(git ls-tree -r origin/master | awk '{print $4}'); do
-               [ -e "$object" ] &&
-                       echo "$SELF: error: $object exists." &&
-                       VCSH_CONFLICT=1;
-       done
-       [ -n "$VCSH_CONFLICT" ] &&
-               echo "$SELF: fatal: will stop after fetching and not try to merge!\n" &&
-               exit 3
-       git merge origin/master
-       vcsh use $REPO_NAME
-       verbose "clone end"
+rename() {
+       git_dir_exists
+       [ -d "$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
 
-elif [ "$1" = 'init' ]; then
-       verbose "init start"
-       export REPO_NAME="$2"
-       export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
-       init
-       vcsh use $REPO_NAME
-       verbose "init stop"
-
-elif [ "$1" = 'exit' ]; then
-       verbose "exit start"
-       if [ -n "$ZSH_VERSION" ] && [ -n "$VCSH_NO_IGNORE_EOF" ]; then
-               unset VCSH_NO_IGNORE_EOF
-               setopt NO_IGNORE_EOF
+}
+
+run() {
+       hook pre-run
+       use
+       $VCSH_EXTERNAL_COMMAND
+       hook post-run
+}
+
+setup() {
+       hook pre-setup
+       use
+       git config core.worktree     "$GIT_WORK_TREE"
+       git config core.excludesfile ".gitignore.d/$VCSH_REPO_NAME"
+       git config vcsh.vcsh         'true'
+       [ -e "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME" ] && git add -f "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME"
+       hook post-setup
+}
+
+use() {
+       git_dir_exists
+       export GIT_WORK_TREE="$(git config --get core.worktree)"
+       export VCSH_DIRECTORY="$VCSH_REPO_NAME"
+}
+
+which() {
+       for VCSH_REPO_NAME in $(list); do
+               for VCSH_FILE in $(get_files); do
+                       echo $VCSH_FILE | grep -q "$VCSH_COMMAND_PARAMETER" && echo "$VCSH_REPO_NAME: $VCSH_FILE"
+               done
+       done | sort -u
+}
+
+write_gitignore() {
+       use
+       cd "$VCSH_BASE" || fatal "could not enter '$VCSH_BASE'" 11
+       gitignores=$(for file in $(git ls-files); do
+               while true; do
+                       echo $file; new="${file%/*}"
+                       [ "$file" = "$new" ] && break
+                       file="$new"
+               done;
+       done | sort -u)
+       tempfile=$(mktemp) || fatal "could not create tempfile" 51
+       echo '*' > "$tempfile" || fatal "could not write to '$tempfile'" 57
+       for gitignore in $gitignores; do
+               echo "$gitignore" | sed 's/^/!/' >> "$tempfile" || fatal "could not write to '$tempfile'" 57
+               if [ x$VCSH_GITIGNORE = x'recursive' ] && [ -d "$gitignore" ]; then
+                       { echo "$gitignore/*" | sed 's/^/!/' >> "$tempfile" || fatal "could not write to '$tempfile'" 57; }
+               fi
+       done
+       if diff -N "$tempfile" "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME" > /dev/null; then
+               rm -f "$tempfile" || error "could not delete '$tempfile'"
+               exit
        fi
-       leave
-       [ -n "$ZSH_VERSION" ] && [ "$USER" = richih ] && buildPS1
-       verbose "exit stop"
-       exit 0
+       if [ -e "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME" ]; then
+               info "'$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME' differs from new data, moving it to '$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME.bak'"
+               mv -f "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME" "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME.bak" ||
+                       fatal "could not move '$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME' to '$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME.bak'" 53
+       fi
+       mv -f "$tempfile" "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME" ||
+               fatal "could not move '$tempfile' to '$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME'" 53
+}
 
+if [ ! "x$VCSH_GITIGNORE" = 'xexact' ] && [ ! "x$VCSH_GITIGNORE" = 'xrecursive' ]; then
+       fatal "'\$VCSH_GITIGNORE' must be either 'exact' or 'recursive'" 1
+fi
+
+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_REPO_D/$VCSH_REPO_NAME.git"
+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"
+       export VCSH_COMMAND_PARAMETER="$2"
+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_REPO_D/$VCSH_REPO_NAME.git"
+       [ "$VCSH_COMMAND" = 'rename' ]         && export GIT_DIR_NEW="$VCSH_REPO_D/$3.git"
+       [ "$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 "$2" ]; then
+       export VCSH_COMMAND='run'
+       export VCSH_REPO_NAME="$1"
+       export GIT_DIR="$VCSH_REPO_D/$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_REPO_D/$VCSH_REPO_NAME.git"
+       [ -d $GIT_DIR ] || { help; exit 1; }
 else
-       verbose "defaulting to calling help()"
-       help
-       exit 3
+       # $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
 
+
+for check_directory in "$VCSH_REPO_D" "$VCSH_BASE/.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 $VCSH_COMMAND | sed 's/-/_/g')
+hook pre-command
+$VCSH_COMMAND
+hook post-command
+verbose "$VCSH_COMMAND end, exiting"