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improve parse_config in JSONSchema and SectionConfig

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The old code used string substitution for every line of the
input string, while perl can also iterate over all matches
via the /g re modifier, and can turn ^ and $ to act as
beginning/end of line via the /m modifier.

Effectively allowing a "match over all lines" via a simple
while ($data =~ /^.*$/gm);

The situation is a little different in SectionConfig because
there's a nested loop invovled which doesn't work with /g.
For this there are two options and I chose the safer one by
simply doing a split on newlines first.
The alternative would be to open the data as a
filehandle-to-string and use <$fh> to read lines, however
I'd have to throw in an eval{} to be sure to close the
handle afterwards.
This commit is contained in:
Wolfgang Bumiller 2015-07-15 10:09:41 +02:00 committed by Dietmar Maurer
parent 8998d715de
commit 3c4d612a70
2 changed files with 16 additions and 20 deletions
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9
src/PVE/JSONSchema.pm
View File

@ -1150,13 +1150,12 @@ sub parse_config {
my $cfg = {};
while ($raw && $raw =~ s/^(.*?)(\n|$)//) {
while ($raw =~ /^\s*(.+?)\s*$/gm) {
my $line = $1;
next if $line =~ m/^\#/; # skip comment lines
next if $line =~ m/^\s*$/; # skip empty lines
if ($line =~ m/^(\S+):\s*(\S+)\s*$/) {
next if $line =~ /^#/;
if ($line =~ m/^(\S+?):\s*(.*)$/) {
my $key = $1;
my $value = $2;
if ($schema->{properties}->{$key} &&

27
src/PVE/SectionConfig.pm
View File

@ -231,19 +231,22 @@ sub parse_config {
my $ids = {};
my $order = {};
my $digest = Digest::SHA::sha1_hex(defined($raw) ? $raw : '');
$raw = '' if !defined($raw);
my $digest = Digest::SHA::sha1_hex($raw);
my $pri = 1;
my $lineno = 0;
my @lines = split(/\n/, $raw);
my $nextline = sub {
while (my $line = shift @lines) {
$lineno++;
return $line if $line !~ /^\s*(?:#|$)/;
}
};
while ($raw && $raw =~ s/^(.*?)(\n|$)//) {
my $line = $1;
$lineno++;
next if $line =~ m/^\#/;
next if $line =~ m/^\s*$/;
while (my $line = &$nextline()) {
my $errprefix = "file $filename line $lineno";
my ($type, $sectionId, $errmsg, $config) = $class->parse_section_header($line);
@ -266,13 +269,7 @@ sub parse_config {
}
}
while ($raw && $raw =~ s/^(.*?)(\n|$)//) {
$line = $1;
$lineno++;
next if $line =~ m/^\#/;
last if $line =~ m/^\s*$/;
while ($line = &$nextline()) {
next if $ignore; # skip
$errprefix = "file $filename line $lineno";