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[Refactor] Use awk to improve version comparison performance

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This commit is contained in:
Jordan Harband
2016-05-05 01:27:17 -07:00
parent 4842641e78
commit 8a138d98ed
2 changed files with 29 additions and 15 deletions
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39
nvm.sh
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@@ -166,19 +166,32 @@ nvm_rc_version() {
}
nvm_version_greater() {
local LHS
LHS="$(nvm_normalize_version "$1")"
local RHS
RHS="$(nvm_normalize_version "$2")"
[ "$LHS" -gt "$RHS" ];
command awk 'BEGIN {
if (ARGV[1] == "" || ARGV[2] == "") exit(1)
split(ARGV[1], a, /\./);
split(ARGV[2], b, /\./);
for (i=1; i<=3; i++) {
if (a[i] && a[i] !~ /^[0-9]+$/) exit(2);
if (b[i] && b[i] !~ /^[0-9]+$/) { exit(0); }
if (a[i] < b[i]) exit(3);
else if (a[i] > b[i]) exit(0);
}
exit(4)
}' "${1#v}" "${2#v}";
}
nvm_version_greater_than_or_equal_to() {
local LHS
LHS="$(nvm_normalize_version "$1")"
local RHS
RHS="$(nvm_normalize_version "$2")"
[ "$LHS" -ge "$RHS" ];
command awk 'BEGIN {
if (ARGV[1] == "" || ARGV[2] == "") exit(1)
split(ARGV[1], a, /\./);
split(ARGV[2], b, /\./);
for (i=1; i<=3; i++) {
if (a[i] && a[i] !~ /^[0-9]+$/) exit(2);
if (a[i] < b[i]) exit(3);
else if (a[i] > b[i]) exit(0);
}
exit(0)
}' "${1#v}" "${2#v}";
}
nvm_version_dir() {
@@ -331,7 +344,7 @@ nvm_is_valid_version() {
*)
local VERSION
VERSION="$(nvm_strip_iojs_prefix "$1")"
nvm_version_greater "$VERSION"
nvm_version_greater_than_or_equal_to "$VERSION" 0
;;
esac
}
@@ -398,9 +411,7 @@ nvm_prepend_path() {
nvm_binary_available() {
# binaries started with node 0.8.6
local FIRST_VERSION_WITH_BINARY
FIRST_VERSION_WITH_BINARY="0.8.6"
nvm_version_greater_than_or_equal_to "$(nvm_strip_iojs_prefix "$1")" "$FIRST_VERSION_WITH_BINARY"
nvm_version_greater_than_or_equal_to "$(nvm_strip_iojs_prefix "${1-}")" v0.8.6
}
nvm_print_formatted_alias() {