From af9c23df7371cd61f8efb60a0654dda3f30f0370 Mon Sep 17 00:00:00 2001 From: Richard Hartmann Date: Thu, 24 Nov 2011 20:05:30 +0100 Subject: [PATCH] Use exit and {} instead of return and () --- doc/error_codes.md | 16 +++++++++++++++- vcsh | 48 ++++++++++++++++++++++------------------------ 2 files changed, 38 insertions(+), 26 deletions(-) diff --git a/doc/error_codes.md b/doc/error_codes.md index 06d760d..e663644 100644 --- a/doc/error_codes.md +++ b/doc/error_codes.md @@ -1,3 +1,17 @@ * 0: OK * 1: Generic error -* 10: source-only command was called without vcsh being sourced +* 10: Init failed because $GIT_DIR exists +* 11: Could not enter $GIT_WORK_TREE +* 12: No repository found +* 13: Required directory exists but is not a directory +* 14: Could not create directory +* 15: Could not create file +* 16: Potentially harmful operation aborted +* 17: Files that would be overwritten exist; fix manually + +* 50: Could not create directory +* 51: Could not create file +* 52: Could not move directory +* 53: Could not move file + +* 99: Error code reserved for actions that should never happen diff --git a/vcsh b/vcsh index a38e55f..8ba0f27 100755 --- a/vcsh +++ b/vcsh @@ -47,12 +47,11 @@ init() { verbose "init() begin" [ -e "$GIT_DIR" ] && echo "$SELF: fatal: $GIT_DIR exists" && - return 21 + return 10 export GIT_WORK_TREE="$HOME" mkdir -p "$GIT_WORK_TREE" cd "$GIT_WORK_TREE" || - (echo "$SELF: fatal: could not enter $GIT_WORK_TREE" && - return 1) || return $? + { echo "$SELF: fatal: could not enter $GIT_WORK_TREE"; return 11; } cd "$GIT_WORK_TREE" git init setup @@ -63,7 +62,7 @@ use() { verbose "use() begin" if [ ! -d "$GIT_DIR" ]; then echo E: no repository found for "$VCSH_REPO_NAME" >&2 - return 1 + return 12 fi export GIT_DIR export GIT_WORK_TREE="$(git config --get core.worktree)" @@ -86,24 +85,24 @@ elif [ "$1" = 'delete' ] || [ "$1" = 'run' ] || [ "$1" = 'seed-gitignore' ] || [ "$1" = 'setup' ]; then - [ -z $2 ] && echo "$SELF $1: error: please specify repository to work on" && return 1 + [ -z $2 ] && echo "$SELF $1: error: please specify repository to work on" && exit 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" ] && echo "$SELF $1 $2: error: please specify a command" && return 1 + [ -z "$VCSH_EXTERNAL_COMMAND" ] && echo "$SELF $1 $2: error: please specify a command" && exit 1 fi elif [ "$1" = 'help' ] || [ "$1" = 'list' ]; then export VCSH_COMMAND="$1" else - [ -z $1 ] && help && return 0 + [ -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 && return 1) || return 0 + [ -d $GIT_DIR ] || { help; exit 1; } shift 1 export VCSH_EXTERNAL_COMMAND="git $*" fi @@ -113,11 +112,11 @@ for check_directory in "$VCSH_BASE" "$HOME/.gitignore.d" do if [ ! -d "$check_directory" ]; then if [ -e "$check_directory" ]; then - echo "$SELF: error: $check_directory exists but is not a directory" >&2 - return 2 + echo "$SELF: fatal: $check_directory exists but is not a directory" >&2 + exit 13 else echo "$SELF: info: attempting to create $check_directory" - mkdir -p "$check_directory" || (echo "$SELF: error: could not create $check_directory" >&2; return 2) || return $? + mkdir -p "$check_directory" || { echo "$SELF: fatal: could not create $check_directory" >&2; exit 50; } fi fi done @@ -138,7 +137,7 @@ if [ "$VCSH_COMMAND" = 'clone' ]; then [ "$VCSH_CONFLICT" = '1' ] && echo "$SELF: fatal: will stop after fetching and not try to merge!\n" && echo " Once this situation has been resolved, run 'vcsh run git pull' to finish cloning.\n" && - return 3 + exit 17 git merge origin/master verbose "clone end" @@ -150,7 +149,7 @@ elif [ "$VCSH_COMMAND" = 'delete' ]; then verbose "delete begin" old_dir="$PWD" cd "$HOME" - use || return $? + use || exit $? echo "$SELF: info: This operation WILL DETROY DATA!" files=$(git ls-files) echo "These files will be deleted: @@ -160,7 +159,7 @@ $files AGAIN, THIS WILL DELETE YOUR DATA! To continue, type \"Yes, do as I say\"" read answer - [ "x$answer" = "xYes, do as I say" ] || return 1 + [ "x$answer" = "xYes, do as I say" ] || exit 16 for file in $files; do rm -f $file || echo "$SELF: info: could not delete '$file', continuing with deletion" done @@ -170,7 +169,7 @@ To continue, type \"Yes, do as I say\"" elif [ "$VCSH_COMMAND" = 'enter' ]; then verbose "enter begin" - use || return $? + use || exit $? $SHELL verbose "enter end" @@ -188,13 +187,13 @@ elif [ "$VCSH_COMMAND" = 'list' ]; then elif [ "$VCSH_COMMAND" = 'run' ]; then verbose "run begin" - use || return $? + use || exit $? $VCSH_EXTERNAL_COMMAND verbose "run end" elif [ "$VCSH_COMMAND" = 'seed-gitignore' ]; then verbose "seed-gitignore begin" - use || return $? + 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" @@ -207,7 +206,7 @@ elif [ "$VCSH_COMMAND" = 'seed-gitignore' ]; then done; done | sort -u) tempfile=$(mktemp) || - (echo "$SELF: fatal: could not create tempfile" && return 1) || return $? + { echo "$SELF: fatal: could not create tempfile"; exit 51; } echo '*' > "$tempfile" for gitignore in $gitignores; do echo "$gitignore" | sed 's/^/!/' >> "$tempfile" @@ -215,28 +214,27 @@ elif [ "$VCSH_COMMAND" = 'seed-gitignore' ]; then done diff -N "$tempfile" "$HOME/.gitignore.d/$VCSH_REPO_NAME" > /dev/null && rm -f "$tempfile" && - return + exit 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" mv -f "$HOME/.gitignore.d/$VCSH_REPO_NAME" "$HOME/.gitignore.d/$VCSH_REPO_NAME.bak" || - (echo "$SELF: fatal: could not move $HOME/.gitignore.d/$VCSH_REPO_NAME to $HOME/.gitignore.d/$VCSH_REPO_NAME.bak" && - return 1) || return $? + { echo "$SELF: fatal: could not move $HOME/.gitignore.d/$VCSH_REPO_NAME to $HOME/.gitignore.d/$VCSH_REPO_NAME.bak"; exit 53; } fi mv -f "$tempfile" "$HOME/.gitignore.d/$VCSH_REPO_NAME" || - (echo "$SELF: fatal: could not move $tempfile to $HOME/.gitignore.d/$VCSH_REPO_NAME" && return 1) || return $? + { echo "$SELF: fatal: could not move $tempfile to $HOME/.gitignore.d/$VCSH_REPO_NAME" && exit 53; } cd "$old_dir" verbose "seed-gitignore end" elif [ "$VCSH_COMMAND" = 'setup' ]; then verbose "seed-gitignore begin" - use || return $? - setup || return $? + use || exit $? + setup || exit $? verbose "seed-gitignore end" else verbose "defaulting to calling help()" help echo "$SELF: fatal: You should never reach this code. File a bug, please." - return 99 + exit 99 fi -- 2.39.5