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12508812d0This updates the edo function to behave similar to its possible implementation in the package manager for EAPI 9: - Backslash-escaping (as einfo does via "echo -e") is not wanted. - Arguments should be printed in a quoted format that could be reused as shell input. We quote arguments using the "@Q" operator of Bash parameter expansion, but avoid excessive quoting by testing each argument for shell metacharacters. The resulting output should be very similar to that of the trace obtained with "set -x". Note that the @Q operator did not exist in Bash 4.2, therefore arguments are printed literally in EAPI 7. Bug: https://bugs.gentoo.org/744880#c13 Suggested-by: Eli Schwartz <eschwartz@gentoo.org> Reviewed-by: Eli Schwartz <eschwartz@gentoo.org> Signed-off-by: Ulrich Müller <ulm@gentoo.org>
113 lines
3 KiB
Bash
113 lines
3 KiB
Bash
# Copyright 2022-2025 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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# @ECLASS: edo.eclass
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# @MAINTAINER:
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# QA Team <qa@gentoo.org>
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# @AUTHOR:
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# Sam James <sam@gentoo.org>
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# @SUPPORTED_EAPIS: 7 8
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# @BLURB: Convenience function to run commands verbosely and die on failure
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# @DESCRIPTION:
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# This eclass provides the 'edo' command, and an 'edob' variant for ebegin/eend,
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# which logs the command used verbosely and dies (exits) on failure.
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#
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# The 'edo' command should be used only where needed to give a more verbose log,
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# e.g. for invoking non-standard ./configure scripts, or building
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# objects/binaries directly within ebuilds via compiler invocations. It is NOT
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# to be used in place of generic 'command || die' where verbosity is
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# unnecessary.
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#
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# The 'edob' command can be used for long running commands, even if
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# those commands produce output. The 'edob' command will suppress the
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# command's output and only present it if the command returned with a
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# non-zero exit status.
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case ${EAPI} in
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7|8) ;;
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*) die "${ECLASS}: EAPI ${EAPI:-0} not supported" ;;
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esac
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if [[ -z ${_EDO_ECLASS} ]] ; then
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_EDO_ECLASS=1
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# @FUNCTION: edo
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# @USAGE: <command> [<args>...]
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# @DESCRIPTION:
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# Executes a short 'command' with any given arguments and exits on failure
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# unless called under 'nonfatal'.
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edo() {
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# list of special characters taken from sh_contains_shell_metas
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# in shquote.c (bash-5.2)
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local a out regex='[] '\''"\|&;()<>!{}*[?^$`]|^[#~]|[=:]~'
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[[ $# -ge 1 ]] || die "edo: at least one argument needed"
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if [[ ${EAPI} = 7 ]]; then
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# no @Q in bash-4.2
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out=" $*"
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else
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for a; do
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# quote if (and only if) necessary
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[[ ${a} =~ ${regex} || ! ${a} =~ ^[[:print:]]+$ ]] && a=${a@Q}
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out+=" ${a}"
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done
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fi
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einfon
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printf '%s\n' "${out:1}" >&2
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"$@" || die -n "Failed to run command: ${1}"
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}
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# @FUNCTION: edob
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# @USAGE: [-l <log-name>] [-m <message>] <command> [<args>...]
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# @DESCRIPTION:
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# Executes 'command' with ebegin & eend with any given arguments and exits
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# on failure unless called under 'nonfatal'. This function redirects
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# stdout and stderr to a log file. The content of the log file is shown
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# if the command returns with a non-zero exit status.
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#
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# If -m <message> is provided, then invokes ebegin with <message>, otherwise
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# a default message is used. If -l <log-name> is provided, then <log-name> is
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# used to construct the name of the log file where stdout and stderr of the
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# command is redirected to.
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edob() {
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local message
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local log_name
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while true; do
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case "${1}" in
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-l|-m)
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[[ $# -lt 2 ]] && die "Must provide an argument to ${1}"
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case "${1}" in
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-l)
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log_name="${2}"
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;;
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-m)
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message="${2}"
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;;
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esac
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shift 2
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;;
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*)
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break
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;;
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esac
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done
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[[ -z ${message} ]] && message="Running $@"
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[[ -z ${log_name} ]] && log_name="$(basename ${1})"
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local log_file="${T}/${log_name}.log"
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ebegin "${message}"
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"$@" &> "${log_file}"
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local ret=$?
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if ! eend $ret; then
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cat "${log_file}"
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die -n "Command \"$@\" failed with exit status $ret"
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fi
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}
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fi
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