hvsupport: use a regex instead of XML::XPath

When generating the hvsupport.html.in file, we parse the -api.xml
files generated by apibuild.py to know in which HTML file the API
function is.

Doing an XPath query for every single 'function' element in the
file is inefficient.

Since the XML file is generated by another of our build scripts
(apibuild.py, using Python's standard 'output.write' XML library),
just find the function name->file mapping by a regex upfront.

Also add a note about this next to the line that generates it
in apibuild.py and do not check if XML::XPath is installed in
bootstrap since we no longer use it.
This commit is contained in:
Ján Tomko 2016-06-28 13:28:48 +02:00
parent 8ee6a99e7c
commit ad9e72f5fa
3 changed files with 29 additions and 6 deletions

View File

@ -209,7 +209,6 @@ gzip -
libtool -
patch -
perl 5.5
perl::XML::XPath -
pkg-config -
rpcgen -
tar -

View File

@ -2267,6 +2267,7 @@ class docBuilder:
if name == debugsym and not quiet:
print "=>", id
# NB: this is consumed by a regex in 'getAPIFilenames' in hvsupport.pl
output.write(" <%s name='%s' file='%s' module='%s'>\n" % (id.type,
name, self.modulename_file(id.header),
self.modulename_file(id.module)))

View File

@ -4,8 +4,6 @@ use strict;
use warnings;
use File::Find;
use XML::XPath;
use XML::XPath::XMLParser;
die "syntax: $0 SRCDIR\n" unless int(@ARGV) == 1;
@ -45,6 +43,32 @@ find({
}
}, no_chdir => 1}, $srcdir);
# Map API functions to the header and documentation files they're in
# so that we can generate proper hyperlinks to their documentation.
#
# The function names are grep'd from the XML output of apibuild.py.
sub getAPIFilenames {
my $filename = shift;
my %files;
my $line;
open FILE, "<", $filename or die "cannot read $filename: $!";
while (defined($line = <FILE>)) {
if ($line =~ /function name='([^']+)' file='([^']+)'/) {
$files{$1} = $2;
}
}
close FILE;
if (keys %files == 0) {
die "No functions found in $filename. Has the apibuild.py output changed?";
}
return \%files;
}
sub parseSymsFile {
my $apisref = shift;
my $prefix = shift;
@ -55,7 +79,7 @@ sub parseSymsFile {
my $vers;
my $prevvers;
my $apixpath = XML::XPath->new(filename => $xmlfilename);
my $filenames = getAPIFilenames($xmlfilename);
open FILE, "<$filename"
or die "cannot read $filename: $!";
@ -83,10 +107,9 @@ sub parseSymsFile {
$prevvers = $vers;
$vers = undef;
} elsif ($line =~ /\s*(\w+)\s*;\s*$/) {
my $file = $apixpath->find("/api/symbols/function[\@name='$1']/\@file");
$$apisref{$1} = {};
$$apisref{$1}->{vers} = $vers;
$$apisref{$1}->{file} = $file;
$$apisref{$1}->{file} = $$filenames{$1};
} else {
die "unexpected data $line\n";
}