Make seed-gitignore more robust and only update the ignore if needed

[code/vcsh.git] / vcsh

diff --git a/vcsh b/vcsh
index ba601b4c1176b1a6331f8bc437d6166665666776..f4d98ad9c0c0a8c97bdd3a8fc9bd4d4143e53716 100755 (executable)
--- a/vcsh
+++ b/vcsh
@@ -1,48 +1,50 @@
 #!/bin/sh
 
 #!/bin/sh
 

-[ "$VCSH_DEBUG" = '1' ] && set -x
+[ -n "$VCSH_DEBUG" ] && set -x

 
 SELF=$(basename $0)
 
 [ -z "$XDG_CONFIG_HOME" ] && XDG_CONFIG_HOME="$HOME/.config"
 
 SELF=$(basename $0)
 
 [ -z "$XDG_CONFIG_HOME" ] && XDG_CONFIG_HOME="$HOME/.config"

-for check_directory in $XDG_CONFIG_HOME $XDG_CONFIG_HOME/vcsh $XDG_CONFIG_HOME/vcsh/repo.d
+[ -z "$VCSH_BASE" ]       && VCSH_BASE="$XDG_CONFIG_HOME/vcsh/repo.d"
+for check_directory in "$VCSH_BASE" "$HOME/.gitignore.d"

 do
        if [ ! -d "$check_directory" ]; then
                if [ -e "$check_directory" ]; then
                        echo "$SELF: error: $check_directory exists but is not a directory" >&2
                        exit 2
                else
 do
        if [ ! -d "$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 $check_directory" >&2; exit 2)
+                       echo "$SELF: info: attempting to create $check_directory"
+                       mkdir -p "$check_directory" || (echo "$SELF: error: could not create $check_directory" >&2; exit 2)

                fi
        fi
 done
 
                fi
        fi
 done
 

-VCSH_BASE="$XDG_CONFIG_HOME/vcsh/repo.d"
-

 debug() {
 debug() {

-       [ "$VCSH_DEBUG" = '1' ] && echo "$SELF: debug: $1"
+       [ -n "$VCSH_DEBUG" ] && echo "$SELF: debug: $1"

 }
 
 verbose() {
 }
 
 verbose() {

-       if [ "$VCSH_DEBUG" = '1' ] || [ "$VCSH_VERBOSE" = '1' ]; then echo "$SELF: verbose: $1"; fi
+       if [ -n "$VCSH_DEBUG" ] || [ -n "$VCSH_VERBOSE" ]; then echo "$SELF: verbose: $1"; fi

 }
 
 #   use <repo>     Use this repository
 }
 
 #   use <repo>     Use this repository

+#
+#   exit              Exit vcsh mode" >&2

 help() {
        echo "usage: $SELF <args>
 
 help() {
        echo "usage: $SELF <args>
 

-   help           Display this help
-
-   list           List all repos
+   help              Display this help

 
 

-   run <repo>
-       <command>  Use this repository
+   list              List all repos

 
 

-   init           Initialize a new repository
-   clone <remote>
-         [<repo>] Clone from an existing repository
+   run <repo> \\
+       <command>     Use this repository

 
 

-   exit           Exit vcsh mode" >&2
+   init <repo>       Initialize a new repository
+   clone <remote> \\
+         [<repo>]    Clone from an existing repository
+   seed-gitignore \\
+   <repo>            Seed .gitignore.d/<repo> from git ls-files" >&2

 }
 
 use() {
 }
 
 use() {


@@ -67,13 +69,16 @@ init() {
                echo "$SELF: fatal: $GIT_DIR exists" &&
                return 21
        export GIT_WORK_TREE="$HOME"
                echo "$SELF: fatal: $GIT_DIR exists" &&
                return 21
        export GIT_WORK_TREE="$HOME"

-       mkdir -p $GIT_WORK_TREE
-       cd $GIT_WORK_TREE ||
+       mkdir -p "$GIT_WORK_TREE"
+       cd "$GIT_WORK_TREE" ||

                (echo "$SELF: fatal: could not enter $GIT_WORK_TREE" &&
                 exit 20) || exit 20
                (echo "$SELF: fatal: could not enter $GIT_WORK_TREE" &&
                 exit 20) || exit 20

-       cd $GIT_WORK_TREE
+       cd "$GIT_WORK_TREE"

        git init
        git init

-       git config core.worktree $GIT_WORK_TREE
+       git config core.worktree     "$GIT_WORK_TREE"
+       git config core.excludesfile ".gitignore.d/$REPO_NAME"
+       touch   "$HOME/.gitignore.d/$REPO_NAME"
+       git add "$HOME/.gitignore.d/$REPO_NAME"

        verbose "init() end"
 }
 
        verbose "init() end"
 }
 


@@ -90,15 +95,15 @@ if [ "$1" = 'help' ] || [ "$#" -eq 0 ]; then
 
 elif [ "$1" = 'list' ]; then
        verbose "list begin"
 
 elif [ "$1" = 'list' ]; then
        verbose "list begin"

-       for i in $VCSH_BASE/*.git; do
-               echo $(basename $i .git)
+       for i in "$VCSH_BASE"/*.git; do
+               echo $(basename "$i" .git)

        done
        verbose "list end"
        exit 0
 
 elif [ "$1" = 'run' ]; then
        verbose "run begin"
        done
        verbose "list end"
        exit 0
 
 elif [ "$1" = 'run' ]; then
        verbose "run begin"

-       use $2
+       use "$2"

        shift 2
        "$@"
        leave
        shift 2
        "$@"
        leave


@@ -128,14 +133,15 @@ elif [ "$1" = 'clone' ]; then
        verbose "clone begin"
        GIT_REMOTE="$2"
        REPO_NAME="$3"
        verbose "clone begin"
        GIT_REMOTE="$2"
        REPO_NAME="$3"

-       [ -z "$REPO_NAME" ] && REPO_NAME=$(basename $GIT_REMOTE .git)
+       [ -z "$REPO_NAME" ] && REPO_NAME=$(basename "$GIT_REMOTE" .git)

        export REPO_NAME
        export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
        init
 
        export REPO_NAME
        export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
        init
 

-       git remote add origin $GIT_REMOTE
+       git remote add origin "$GIT_REMOTE"

        git config branch.master.remote origin
        git config branch.master.merge  refs/heads/master
        git config branch.master.remote origin
        git config branch.master.merge  refs/heads/master

+       git config core.excludesfile    ".gitignore.d/$REPO_NAME"

        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" ] &&


@@ -144,29 +150,67 @@ elif [ "$1" = 'clone' ]; then
        done
        [ "$VCSH_CONFLICT" = '1' ] &&
                echo "$SELF: fatal: will stop after fetching and not try to merge!\n" &&
        done
        [ "$VCSH_CONFLICT" = '1' ] &&
                echo "$SELF: fatal: will stop after fetching and not try to merge!\n" &&

+               echo "  Once this situation has been resolved, run 'vcsh run <foo> git pull' to finish cloning.\n" &&

                exit 3
        git merge origin/master
                exit 3
        git merge origin/master

-       vcsh use $REPO_NAME
+#      vcsh use $REPO_NAME

        verbose "clone end"
 
 elif [ "$1" = 'init' ]; then
        verbose "init begin"
        verbose "clone end"
 
 elif [ "$1" = 'init' ]; then
        verbose "init begin"

+       [ -z $2 ] && help && echo && echo "$SELF $1: error: please specify repository to work on" && return 0

        export REPO_NAME="$2"
        export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
        init
        export REPO_NAME="$2"
        export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
        init

-       vcsh use $REPO_NAME
+#      vcsh use "$REPO_NAME"

        verbose "init end"
 
        verbose "init end"
 

-elif [ "$1" = 'exit' ]; then
-       verbose "exit begin"
-       if [ -n "$ZSH_VERSION" ] && [ "$VCSH_NO_IGNORE_EOF" = '1' ]; then
-               unset VCSH_NO_IGNORE_EOF
-               setopt NO_IGNORE_EOF
+#elif [ "$1" = 'exit' ]; then
+#      verbose "exit begin"
+#      if [ -n "$ZSH_VERSION" ] && [ "$VCSH_NO_IGNORE_EOF" = '1' ]; then
+#              unset VCSH_NO_IGNORE_EOF
+#              setopt NO_IGNORE_EOF
+#      fi
+#      leave
+#      [ -n "$ZSH_VERSION" ] && [ "$USER" = richih ] && buildPS1
+#      verbose "exit end"
+#      exit 0
+
+elif [ "$1" = 'seed-gitignore' ]; then
+       verbose "seed-gitignore begin"
+       [ -z $2 ] && help && echo && echo "$SELF $1: error: please specify repository to work on" && return 0
+       use "$2"
+       # 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 "$HOME"
+       git config core.excludesfile ".gitignore.d/$REPO_NAME"
+       files=$(git ls-files)
+       gitignores=$(for file in $(git ls-files); do
+               while true; do
+                       echo $file; new="${file%/*}"
+                       [ "$file" = "$new" ] && break
+                       file="$new"
+               done;
+       done | sort -u | sed 's/^/!/')
+       tempfile=$(mktemp) ||
+               (echo "$SELF: fatal: could not create tempfile" && exit 1) 
+       echo '*' > "$tempfile"
+       for gitignore in $gitignores; do
+               echo "$gitignore" >> "$tempfile"
+       done
+       diff -N "$tempfile" "$HOME/.gitignore.d/$2" > /dev/null &&
+               rm -f "$tempfile" &&
+               return
+       if [ -e "$HOME/.gitignore.d/$2" ]; then
+               echo "$SELF: info: $HOME/.gitignore.d/$2 differs from new data, moving it to $HOME/.gitignore.d/$2.bak"
+               mv -f "$HOME/.gitignore.d/$2" "$HOME/.gitignore.d/$2.bak" ||
+                       (echo "$SELF: fatal: could not move $HOME/.gitignore.d/$2 to $HOME/.gitignore.d/$2.bak" && exit 1)

        fi
        fi

-       leave
-       [ -n "$ZSH_VERSION" ] && [ "$USER" = richih ] && buildPS1
-       verbose "exit end"
-       exit 0
+       mv -f "$tempfile" "$HOME/.gitignore.d/$2" ||
+               (echo "$SELF: fatal: could not move $tempfile to $HOME/.gitignore.d/$2" && exit 1)
+       cd "$old_dir"
+       verbose "seed-gitignore end"

 
 else
        verbose "defaulting to calling help()"
 
 else
        verbose "defaulting to calling help()"