mirror of
https://codeberg.org/privacy1st/arch-installer
synced 2024-12-23 02:16:05 +01:00
105 lines
2.9 KiB
Bash
105 lines
2.9 KiB
Bash
function join_by() {
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# Join array elements with character $1
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#
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# arg $1: A single-character delimiter, e.g. ','
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# arg $2: Name of source array
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# arg $3: Variable name to store result
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validate_args 3 "$@" || return $?
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local delimiter="${1}"
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local -n source_array_ptr=$2
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local -n joined_ptr=$3
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# https://stackoverflow.com/a/2317171
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joined_ptr=$(printf "${delimiter}%s" "${source_array_ptr[@]}") || return $?
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joined_ptr=${joined_ptr:1} || return $?
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}
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function newline_to_space() {
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# Replaces all newlines with spaces
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#
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# arg $1: Name of variable
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validate_args 1 "$@" || return $?
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local -n ptr=$1
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# Replace newlines with spaces.
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# See bash string substitution: https://gist.github.com/JPvRiel/b279524d3e56229a896477cb8082a72b
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ptr="${ptr//$'\n'/' '}"
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}
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function newline_separated_to_array() {
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# Watch out for tailing newlines as these result in additional elements "" at the end of the array.
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# $1 and $2 can be equal (if the result shall be written to the input variable).
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#
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# arg $1: Name of variable with newline separated list
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# arg $2: Name of array to store values into
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validate_args 2 "$@" || return $?
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local -n source_ptr=$1
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local -n array1_ptr=$2
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# source_ptr is a newline separated list.
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# Store this as array array1_ptr.
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# shellcheck disable=SC2034
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readarray -t array1_ptr <<<"${source_ptr}"
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}
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function space_separated_to_array() {
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# arg $1: Name of variable with space separated list
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# arg $2: Name of array to store values into
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validate_args 2 "$@" || return $?
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local -n source_ptr=$1
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# shellcheck disable=SC2178
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local -n array2_ptr=$2
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# source_ptr space separated list.
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# Store this as array array2_ptr.
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# Without newline at last array element: https://unix.stackexchange.com/a/519917/315162
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# shellcheck disable=SC2034
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readarray -d ' ' -t array2_ptr < <(printf '%s' "${source_ptr}")
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}
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function get_cpu_vendor() {
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# If $1 does already contain a known CPU vendor, nothing is done.
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#
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# Otherwise, we try to detect the CPU vendor and save it into $1.
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#
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# arg $1: Name of variable to store CPU vendor into.
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#
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# @pre
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# $1 ("amd", "intel", "none", *)
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# @post
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# $1 ("amd", "intel", "none")
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validate_args 1 "$@" || return $?
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local -n cpu_vendor_ptr=$1
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# Check if variable does already contain known CPU vendor.
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case "${cpu_vendor_ptr}" in
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amd|intel|none)
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return 0
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;;
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*)
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:
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;;
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esac
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# If in virtual environment (e.g. VirtualBox), then no CPU microcode is required.
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if grep --quiet '^flags.*hypervisor' /proc/cpuinfo; then
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echo 'Detected virtual environment.'
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cpu_vendor_ptr='none'
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return 0
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fi
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local vendor_id
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vendor_id="$(grep vendor_id /proc/cpuinfo | head -1 | sed 's|vendor_id\s*:\s*||')"
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if [ "${vendor_id}" = 'AuthenticAMD' ]; then
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cpu_vendor_ptr='amd'
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return 0
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elif [ "${vendor_id}" = 'GenuineIntel' ]; then
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cpu_vendor_ptr='intel'
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return 0
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else
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echo 'Unknown CPU vendor'
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return 1
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fi
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}
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