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Made fully(?) POSIX shell compliant, some minor cleanups
[code/vcsh.git] / vcsh
diff --git a/vcsh b/vcsh
index c26b50a6b7465ed01d5b0181983e2e407bf6687b..eb852a01aa9103fc4b4b1e953d2c67e20174a290 100755 (executable)
--- a/vcsh
+++ b/vcsh
@@ -1,11 +1,32 @@
 #!/bin/sh
 
 #!/bin/sh
 
-#set -x
+[ "$VCSH_DEBUG" -gt 0 ] && set -x
 
 SELF=$(basename $0)
 
 SELF=$(basename $0)
-[ -z $XDG_CONFIG_HOME ] && XDG_CONFIG_HOME="$HOME/.config"
+
+[ -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 $check_directory" >&2; exit 2)
+               fi
+       fi
+done
+
 VCSH_BASE="$XDG_CONFIG_HOME/vcsh/repo.d"
 
 VCSH_BASE="$XDG_CONFIG_HOME/vcsh/repo.d"
 
+debug() {
+       [ -n "$VCSH_DEBUG" ] && echo "$SELF: debug: $1"
+}
+
+verbose() {
+       if [ -n "$VCSH_DEBUG" ] || [ -n "$VCSH_VERBOSE" ]; then echo "$SELF: verbose: $1"; fi
+}
+
 help() {
        echo "usage: $SELF <args>
 
 help() {
        echo "usage: $SELF <args>
 
@@ -19,12 +40,13 @@ help() {
 
    init           Initialize a new repository
    clone <remote>
 
    init           Initialize a new repository
    clone <remote>
-         <repo>   Clone from an existing repository
+         [<repo>] Clone from an existing repository
 
    exit           Exit vcsh mode" >&2
 }
 
 use() {
 
    exit           Exit vcsh mode" >&2
 }
 
 use() {
+       verbose "use() start"
        REPO_NAME="$1"
        GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
 
        REPO_NAME="$1"
        GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
 
@@ -36,20 +58,23 @@ use() {
        export GIT_DIR
        export GIT_WORK_TREE="$(git config --get core.worktree)"
        export VCSH_DIRECTORY="$REPO_NAME"
        export GIT_DIR
        export GIT_WORK_TREE="$(git config --get core.worktree)"
        export VCSH_DIRECTORY="$REPO_NAME"
+       verbose "use() stop"
 }
 
 init() {
 }
 
 init() {
-       [[ -e $GIT_DIR ]] &&
-               echo "$(basename $0): fatal: $GIT_DIR exists" &&
+       verbose "init() start"
+       [ -e "$GIT_DIR" ] &&
+               echo "$SELF: fatal: $GIT_DIR exists" &&
                return 21
        export GIT_WORK_TREE="$HOME"
        mkdir -p $GIT_WORK_TREE
        cd $GIT_WORK_TREE ||
                return 21
        export GIT_WORK_TREE="$HOME"
        mkdir -p $GIT_WORK_TREE
        cd $GIT_WORK_TREE ||
-               (echo "$(basename $0): fatal: could not enter $GIT_WORK_TREE" &&
+               (echo "$SELF: fatal: could not enter $GIT_WORK_TREE" &&
                 exit 20) || exit 20
        cd $GIT_WORK_TREE
        git init
        git config core.worktree $GIT_WORK_TREE
                 exit 20) || exit 20
        cd $GIT_WORK_TREE
        git init
        git config core.worktree $GIT_WORK_TREE
+       verbose "init() stop"
 }
 
 leave() {
 }
 
 leave() {
@@ -58,39 +83,53 @@ leave() {
        unset VCSH_DIRECTORY
 }
 
        unset VCSH_DIRECTORY
 }
 
-if [ "$1" = 'help' ] || [ $# -eq 0 ]; then
+if [ "$1" = 'help' ] || [ "$#" -eq 0 ]; then
        help
        [ "$1" = 'help' ]
        help
        [ "$1" = 'help' ]
-       return $?
+       exit $?
 
 elif [ "$1" = 'list' ]; then
 
 elif [ "$1" = 'list' ]; then
+       verbose "list start"
        for i in $VCSH_BASE/*.git; do
                echo $(basename $i .git)
        done
        for i in $VCSH_BASE/*.git; do
                echo $(basename $i .git)
        done
-       return 0
+       verbose "list stop"
+       exit 0
 
 elif [ "$1" = 'run' ]; then
 
 elif [ "$1" = 'run' ]; then
+       verbose "run start"
        use $2
        shift 2
        "$@"
        leave
        use $2
        shift 2
        "$@"
        leave
-       return 0
+       verbose "run start"
+       exit 0
 
 elif [ "$1" = 'use' ]; then
 
 elif [ "$1" = 'use' ]; then
-       if [[ -o NO_IGNORE_EOF ]]; then
-               export VCSH_NO_IGNORE_EOF=1
-               setopt IGNORE_EOF
-               vcsh_exit() {vcsh exit; zle reset-prompt}
+       verbose "use start"
+       if [ -n "$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
                zle -N vcsh_exit
                bindkey '^d' 'vcsh_exit'
        fi
        use $2
-       buildPS1
-       return 0
+       [ -n "$ZSH_VERSION" ] && [ "$USER" = richih ] && buildPS1
+       verbose "use stop"
+       exit 0
 
 elif [ "$1" = 'clone' ]; then
 
 elif [ "$1" = 'clone' ]; then
-       export GIT_REMOTE="$2"
-       export REPO_NAME="$3"
+       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
 
        export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
        init
 
@@ -98,35 +137,41 @@ elif [ "$1" = 'clone' ]; then
        git config branch.master.remote origin
        git config branch.master.merge  refs/heads/master
        git fetch
        git config branch.master.remote origin
        git config branch.master.merge  refs/heads/master
        git fetch
-       for i in $(git ls-tree -r origin/master | awk '{print $4}'); do
-       [[ -e $i ]] &&
-               echo "$(basename $0): error: $i exists." &&
-               CONFLICT=1;
+       for object in $(git ls-tree -r origin/master | awk '{print $4}'); do
+               [ -e "$object" ] &&
+                       echo "$SELF: error: $object exists." &&
+                       VCSH_CONFLICT=1;
        done
        done
-       [[ -n $CONFLICT ]] &&
-               echo "$(basename $0): fatal: will stop after fetching and not try to merge!\n" &&
+       [ -n "$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
                exit 3
        git merge origin/master
        vcsh use $REPO_NAME
+       verbose "clone end"
 
 elif [ "$1" = 'init' ]; then
 
 elif [ "$1" = 'init' ]; then
+       verbose "init start"
        export REPO_NAME="$2"
        export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
        init
        vcsh use $REPO_NAME
        export REPO_NAME="$2"
        export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
        init
        vcsh use $REPO_NAME
+       verbose "init stop"
 
 elif [ "$1" = 'exit' ]; then
 
 elif [ "$1" = 'exit' ]; then
-       if [[ $VCSH_NO_IGNORE_EOF -gt 0 ]]; then
+       verbose "exit start"
+       if [ -n "$ZSH_VERSION" ] && [ -n "$VCSH_NO_IGNORE_EOF" ]; then
                unset VCSH_NO_IGNORE_EOF
                setopt NO_IGNORE_EOF
        fi
        leave
                unset VCSH_NO_IGNORE_EOF
                setopt NO_IGNORE_EOF
        fi
        leave
-       buildPS1
-       return 0
+       [ -n "$ZSH_VERSION" ] && [ "$USER" = richih ] && buildPS1
+       verbose "exit stop"
+       exit 0
 
 else
 
 else
+       verbose "defaulting to calling help()"
        help
        help
-       return 3
+       exit 3
 
 fi
 
 
 fi
 
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All files and their content are released under the terms of the Artistic Licence 2.0, unless otherwise noted.

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