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https://github.com/nix-community/home-manager
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b3a9fb9d05
In most cases where this function is used, suppressing only the standard output is more appropriate. Culling diagnostic output hides error messages and makes debugging more difficult and confusing. `$DRY_RUN_NULL`, which the `--silence` flag replaced, was used both for suppressing standard output on its own, and for doing so along with diagnostic output; however, when the `run` function was added this distinction was lost, and both outputs would be discarded. This reintroduces the needed functionality, and changes usages of `--silence` to `--quiet` where previously only standard output was suppressed, or where this should have probably been the case anyway. Change-Id: Ifb1b52a1d1eea0117261c782d686ad7c71b43162
127 lines
2.7 KiB
Bash
127 lines
2.7 KiB
Bash
#!/usr/bin/env bash
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#
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# This file contains a number of utilities for use by the home-manager tool and
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# the generated Home Manager activation scripts. No guarantee is made about
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# backwards or forward compatibility.
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#
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# Sets up colors suitable for the `errorEcho`, `warnEcho`, and `noteEcho`
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# functions.
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#
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# The check for terminal output and color support is heavily inspired by
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# https://unix.stackexchange.com/a/10065.
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#
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# The setup respects the `NO_COLOR` environment variable.
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function setupColors() {
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normalColor=""
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errorColor=""
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warnColor=""
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noteColor=""
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# Enable colors for terminals, and allow opting out.
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if [[ ! -v NO_COLOR && -t 1 ]]; then
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# See if it supports colors.
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local ncolors
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ncolors=$(tput colors 2> /dev/null || echo 0)
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if [[ -n "$ncolors" && "$ncolors" -ge 8 ]]; then
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normalColor="$(tput sgr0)"
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errorColor="$(tput bold)$(tput setaf 1)"
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warnColor="$(tput setaf 3)"
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noteColor="$(tput bold)$(tput setaf 6)"
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fi
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fi
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}
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setupColors
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function errorEcho() {
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echo "${errorColor}$*${normalColor}"
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}
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function warnEcho() {
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echo "${warnColor}$*${normalColor}"
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}
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function noteEcho() {
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echo "${noteColor}$*${normalColor}"
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}
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function verboseEcho() {
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if [[ -v VERBOSE ]]; then
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echo "$*"
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fi
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}
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function _i() {
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local msgid="$1"
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shift
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# shellcheck disable=2059
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printf "$(gettext "$msgid")\n" "$@"
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}
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function _ip() {
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local msgid="$1"
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local msgidPlural="$2"
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local count="$3"
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shift 3
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# shellcheck disable=2059
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printf "$(ngettext "$msgid" "$msgidPlural" "$count")\n" "$@"
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}
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function _iError() {
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echo -n "${errorColor}"
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_i "$@"
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echo -n "${normalColor}"
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}
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function _iWarn() {
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echo -n "${warnColor}"
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_i "$@"
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echo -n "${normalColor}"
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}
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function _iNote() {
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echo -n "${noteColor}"
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_i "$@"
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echo -n "${normalColor}"
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}
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function _iVerbose() {
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if [[ -v VERBOSE ]]; then
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_i "$@"
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fi
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}
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# Runs the given command on live run, otherwise prints the command to standard
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# output.
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#
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# If given the command line option `--quiet`, then the command's standard output
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# is sent to `/dev/null` on a live run.
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#
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# If given the command line option `--silence`, then the command's standard and
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# error output is sent to `/dev/null` on a live run.
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#
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# The `--silence` and `--quiet` flags are mutually exclusive.
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function run() {
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if [[ $1 == '--quiet' ]]; then
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local quiet=1
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shift
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elif [[ $1 == '--silence' ]]; then
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local silence=1
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shift
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fi
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if [[ -v DRY_RUN ]] ; then
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echo "$@"
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elif [[ -v quiet ]] ; then
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"$@" > /dev/null
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elif [[ -v silence ]] ; then
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"$@" > /dev/null 2>&1
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else
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"$@"
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fi
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}
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