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curl/tests/convsrctest.pl

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Perl
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#!/usr/bin/env perl
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.haxx.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
#***************************************************************************
#=======================================================================
# Read a test definition which exercises curl's --libcurl option.
# Generate either compilable source code for a new test tool,
# or a new test definition which runs the tool and expects the
# same output.
# This should verify that the --libcurl code really does perform
# the same actions as the original curl invocation.
#-----------------------------------------------------------------------
# The output of curl's --libcurl option differs in several ways from
# the code needed to integrate with the test tool environment:
# - #include "test.h"
# - no call of curl_global_init & curl_global_cleanup
# - main() function vs. test() function
# - no checking of curl_easy_setopt calls vs. test_setopt wrapper
# - handling of stdout
# - variable names ret & hnd vs. res & curl
# - URL as literal string vs. passed as argument
#=======================================================================
use strict;
require "getpart.pm";
# Boilerplate code for test tool
my $head =
'#include "test.h"
#include "memdebug.h"
int test(char *URL)
{
CURLcode res;
CURL *curl;
';
# Other declarations from --libcurl come here
# e.g. curl_slist
my $init =
'
if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK) {
fprintf(stderr, "curl_global_init() failed\n");
return TEST_ERR_MAJOR_BAD;
}
if ((curl = curl_easy_init()) == NULL) {
fprintf(stderr, "curl_easy_init() failed\n");
curl_global_cleanup();
return TEST_ERR_MAJOR_BAD;
}
';
# Option setting, perform and cleanup come here
my $exit =
' curl_global_cleanup();
return (int)res;
}
';
my $myname = leaf($0);
sub usage {die "Usage: $myname -c|-test=num testfile\n";}
sub main {
@ARGV == 2
or usage;
my($opt,$testfile) = @ARGV;
if(loadtest($testfile)) {
die "$myname: $testfile doesn't look like a test case\n";
}
my $comment = sprintf("DO NOT EDIT - generated from %s by %s",
leaf($testfile), $myname);
if($opt eq '-c') {
generate_c($comment);
}
elsif(my($num) = $opt =~ /^-test=(\d+)$/) {
generate_test($comment, $num);
}
else {
usage;
}
}
sub generate_c {
my($comment) = @_;
# Fetch the generated code, which is the output file checked by
# the old test.
my @libcurl = getpart("verify", "file")
or die "$myname: no <verify><file> section found\n";
# Mangle the code into a suitable form for a test tool.
# We want to extract the important parts (declarations,
# URL, setopt calls, cleanup code) from the --libcurl
# boilerplate and insert them into a new boilerplate.
my(@decl,@code);
# First URL passed in as argument, others as global
my @urlvars = ('URL', 'libtest_arg2', 'libtest_arg3');
my($seen_main,$seen_setopt,$seen_return);
foreach (@libcurl) {
# Check state changes first (even though it
# duplicates some matches) so that the other tests
# are in a logical order).
if(/^int main/) {
$seen_main = 1;
}
if($seen_main and /curl_easy_setopt/) {
# Don't match 'curl_easy_setopt' in comment!
$seen_setopt = 1;
}
if(/^\s*return/) {
$seen_return = 1;
}
# Now filter the code according to purpose
if(! $seen_main) {
next;
}
elsif(! $seen_setopt) {
if(/^\s*(int main|\{|CURLcode |CURL |hnd = curl_easy_init)/) {
# Initialisations handled by boilerplate
next;
}
else {
push @decl, $_;
}
}
elsif(! $seen_return) {
if(/CURLOPT_URL/) {
# URL is passed in as argument or by global
my $var = shift @urlvars;
s/\"[^\"]*\"/$var/;
}
s/\bhnd\b/curl/;
# Convert to macro wrapper
s/curl_easy_setopt/test_setopt/;
if(/curl_easy_perform/) {
s/\bret\b/res/;
push @code, $_;
push @code, "test_cleanup:\n";
}
else {
push @code, $_;
}
}
}
print ("/* $comment */\n",
$head,
@decl,
$init,
@code,
$exit);
}
# Read the original test data file and transform it
# - add a "DO NOT EDIT comment"
# - replace CURLOPT_URL string with URL variable
# - remove <verify><file> section (was the --libcurl output)
# - insert a <client><tool> section with our new C program name
# - replace <client><command> section with the URL
sub generate_test {
my($comment,$newnumber) = @_;
my @libcurl = getpart("verify", "file")
or die "$myname: no <verify><file> section found\n";
# Scan the --libcurl code to find the URL used.
my $url;
foreach (@libcurl) {
if(my($u) = /CURLOPT_URL, \"([^\"]*)\"/) {
$url = $u;
}
}
die "$myname: CURLOPT_URL not found\n"
unless defined $url;
# Traverse the pseudo-XML transforming as required
my @new;
my(@path,$path,$skip);
foreach (getall()) {
if(my($end) = /\s*<(\/?)testcase>/) {
push @new, $_;
push @new, "# $comment\n"
unless $end;
}
elsif(my($tag) = /^\s*<(\w+)/) {
push @path, $tag;
$path = join '/', @path;
if($path eq 'verify/file') {
$skip = 1;
}
push @new, $_
unless $skip;
if($path eq 'client') {
push @new, ("<tool>\n",
"lib$newnumber\n",
"</tool>\n");
}
elsif($path eq 'client/command') {
push @new, sh_quote($url)."\n";
}
}
elsif(my($etag) = /^\s*<\/(\w+)/) {
my $tag = pop @path;
die "$myname: mismatched </$etag>\n"
unless $tag eq $etag;
push @new, $_
unless $skip;
$skip --
if $path eq 'verify/file';
$path = join '/', @path;
}
else {
if($path eq 'client/command') {
# Replaced above
}
else {
push @new, $_
unless $skip;
}
}
}
print @new;
}
sub leaf {
# Works for POSIX filenames
(my $path = shift) =~ s!.*/!!;
return $path;
}
sub sh_quote {
my $word = shift;
$word =~ s/[\$\"\'\\]/\\$&/g;
return '"' . $word . '"';
}
main;