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# vim: set ft=sh :

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#

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# Utility functions

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### Command execution

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## Execute command, possibly logging its execution.

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#

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#   cmd     $cmd...

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#

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# Fails if the command returns an error exit code.

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function cmd {

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    log_cmd "$@"

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    "$@" || die "Failed"

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}

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function indent () {

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    local indent=$1; shift

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    log_cmd "$@"

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    "$@" | sed "s/^/$indent/"

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    return ${PIPESTATUS[0]}

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}

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### FS utils

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# Create dir in $ROOT if not exists.

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function ensure_dir {

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    local dir=$1

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    if [ ! -d $ROOT/$dir ]; then

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        log_warn "Creating output dir: $dir"

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        cmd mkdir $ROOT/$dir

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    fi

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}

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## Output absolute path from $ROOT:

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#

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#   abspath $path

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#

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function abspath () {

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    local path=$1

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    echo "$ROOT/$path"

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}

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### HG wrappers

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# Run `hg ...` within $REPO.

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function hg {

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    local repo=$REPO

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    cmd $HG -R $ROOT/$repo "$@"

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}

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# Does the repo have local modifications?

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function hg_modified {

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    hg id | grep -q '+'

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}

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# Output possible -u flag for commit.

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function hg_user {

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    if [ ${SUDO_USER:-} ]; then

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        echo '-u' "$SUDO_USER"

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    elif [ $HOME ] && [ -e $HOME/.hgrc ]; then

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        debug "using .hgrc user"

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        echo ''

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    else

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        echo '-u' "$USER"

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    fi

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}

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# Show changes in repo

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function hg_diff {

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    hg diff -X "$REPO/$REPO_HIDE"

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}

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## Commit changes in repo, with given message:

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#

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#   hg_commit   $msg

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#

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function hg_commit {

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    local msg=$1

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    local user_opt=$(hg_user)

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    debug "$user_opt: $msg"

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    hg commit $user_opt -m "$msg"

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}

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