terom@60: #!/bin/bash
terom@52: #
terom@52: # Utility functions
terom@52: 
terom@52: ### Command execution
terom@52: ## Execute command, possibly logging its execution.
terom@52: #
terom@52: #   cmd     $cmd...
terom@52: #
terom@52: # Fails if the command returns an error exit code.
terom@52: function cmd {
terom@52:     log_cmd "$@"
terom@52: 
terom@83:     "$@" || die "Failed: $@"
terom@52: }
terom@52: 
terom@66: ## Execute command as a test, logging its execution at log_cmd
terom@66: #
terom@66: #   cmd_test $cmd... && ... || ...
terom@66: #
terom@66: # Fails if the command returns an error exit code.
terom@66: function cmd_test {
terom@66:     log_cmd "$@"
terom@66: 
terom@66:     "$@"
terom@66: }
terom@55: ## Execute command, prefixing its output on stdout with given indent prefix.
terom@55: #
terom@55: #   indent  "    " $cmd...
terom@55: #
terom@55: # Output is kept on stdout, exit status is that of the given command.
terom@52: function indent () {
terom@85:     local indent="$1"; shift
terom@52: 
terom@52:     "$@" | sed "s/^/$indent/"
terom@52: 
terom@52:     return ${PIPESTATUS[0]}
terom@52: }
terom@52: 
terom@52: 
terom@52: ### FS utils
terom@82: # Create dir if not exists.
terom@52: function ensure_dir {
terom@85:     local dir="$1"
terom@52: 
terom@85:     if [ ! -d "$dir" ]; then
terom@52:         log_warn "Creating output dir: $dir"
terom@85:         cmd mkdir "$dir"
terom@52:     fi
terom@52: }
terom@52: 
terom@82: ## Output absolute path
terom@52: #
terom@52: #   abspath $path
terom@52: #
terom@82: # XXX: improve...?
terom@52: function abspath () {
terom@85:     local path="$1"
terom@52: 
terom@82:     echo "$SRV/$path"
terom@52: }
terom@52: 
terom@69: ## List names of files in dir:
terom@69: #
terom@69: #   list_files $dir $glob
terom@69: #
terom@69: function list_files {
terom@85:     local dir="$1"
terom@85:     local glob="${2:-*}"
terom@69:     local name=
terom@69: 
terom@69:     for file in $dir/$glob; do
terom@82:         # only files
terom@85:         [ -f "$file" ] || continue
terom@82: 
terom@69:         # strip prefix
terom@69:         name=${file#$dir/}
terom@69:         name=${name%$glob}
terom@69: 
terom@69:         echo -n "$name "
terom@69:     done
terom@69: }
terom@69: 
terom@82: ## List names of files in dirs..
terom@82: function list_dirs {
terom@82:     for dir in "$@"; do
terom@82:         for file in $dir/*; do
terom@82:             echo -n "${file#$dir/}"
terom@82:         done
terom@82:     done
terom@52: }