235 lines
6.6 KiB
Perl
235 lines
6.6 KiB
Perl
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#!/usr/bin/env perl
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#***************************************************************************
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# _ _ ____ _
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# Project ___| | | | _ \| |
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# / __| | | | |_) | |
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# | (__| |_| | _ <| |___
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# \___|\___/|_| \_\_____|
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#
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# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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#
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# This software is licensed as described in the file COPYING, which
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# you should have received as part of this distribution. The terms
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# are also available at https://curl.se/docs/copyright.html.
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#
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# You may opt to use, copy, modify, merge, publish, distribute and/or sell
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# copies of the Software, and permit persons to whom the Software is
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# furnished to do so, under the terms of the COPYING file.
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#
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# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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# KIND, either express or implied.
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#
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# SPDX-License-Identifier: curl
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#
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###########################################################################
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#
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# This script is aimed to help scan for and detect globally declared functions
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# that are not used from other source files.
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#
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# Use it like this:
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#
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# $ ./scripts/singleuse.pl [--unit] lib/.libs/libcurl.a
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#
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# --unit : built to support unit tests
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#
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my $unittests;
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if($ARGV[0] eq "--unit") {
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$unittests = "tests/unit ";
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shift @ARGV;
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}
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my $file = $ARGV[0];
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my %wl = (
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'curlx_uztoso' => 'cmdline tool use',
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);
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my %api = (
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'curl_easy_cleanup' => 'API',
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'curl_easy_duphandle' => 'API',
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'curl_easy_escape' => 'API',
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'curl_easy_getinfo' => 'API',
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'curl_easy_init' => 'API',
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'curl_easy_pause' => 'API',
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'curl_easy_perform' => 'API',
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'curl_easy_recv' => 'API',
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'curl_easy_reset' => 'API',
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'curl_easy_send' => 'API',
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'curl_easy_setopt' => 'API',
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'curl_easy_strerror' => 'API',
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'curl_easy_unescape' => 'API',
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'curl_easy_upkeep' => 'API',
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'curl_easy_option_by_id' => 'API',
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'curl_easy_option_by_name' => 'API',
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'curl_easy_option_next' => 'API',
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'curl_escape' => 'API',
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'curl_formadd' => 'API',
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'curl_formfree' => 'API',
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'curl_formget' => 'API',
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'curl_free' => 'API',
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'curl_getdate' => 'API',
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'curl_getenv' => 'API',
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'curl_global_cleanup' => 'API',
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'curl_global_init' => 'API',
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'curl_global_init_mem' => 'API',
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'curl_global_sslset' => 'API',
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'curl_global_trace' => 'API',
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'curl_maprintf' => 'API',
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'curl_mfprintf' => 'API',
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'curl_mime_addpart' => 'API',
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'curl_mime_data' => 'API',
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'curl_mime_data_cb' => 'API',
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'curl_mime_encoder' => 'API',
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'curl_mime_filedata' => 'API',
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'curl_mime_filename' => 'API',
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'curl_mime_free' => 'API',
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'curl_mime_headers' => 'API',
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'curl_mime_init' => 'API',
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'curl_mime_name' => 'API',
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'curl_mime_subparts' => 'API',
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'curl_mime_type' => 'API',
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'curl_mprintf' => 'API',
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'curl_msnprintf' => 'API',
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'curl_msprintf' => 'API',
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'curl_multi_add_handle' => 'API',
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'curl_multi_assign' => 'API',
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'curl_multi_cleanup' => 'API',
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'curl_multi_fdset' => 'API',
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'curl_multi_get_handles' => 'API',
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'curl_multi_info_read' => 'API',
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'curl_multi_init' => 'API',
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'curl_multi_perform' => 'API',
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'curl_multi_remove_handle' => 'API',
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'curl_multi_setopt' => 'API',
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'curl_multi_socket' => 'API',
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'curl_multi_socket_action' => 'API',
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'curl_multi_socket_all' => 'API',
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'curl_multi_poll' => 'API',
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'curl_multi_strerror' => 'API',
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'curl_multi_timeout' => 'API',
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'curl_multi_wait' => 'API',
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'curl_multi_wakeup' => 'API',
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'curl_mvaprintf' => 'API',
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'curl_mvfprintf' => 'API',
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'curl_mvprintf' => 'API',
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'curl_mvsnprintf' => 'API',
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'curl_mvsprintf' => 'API',
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'curl_pushheader_byname' => 'API',
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'curl_pushheader_bynum' => 'API',
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'curl_share_cleanup' => 'API',
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'curl_share_init' => 'API',
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'curl_share_setopt' => 'API',
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'curl_share_strerror' => 'API',
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'curl_slist_append' => 'API',
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'curl_slist_free_all' => 'API',
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'curl_strequal' => 'API',
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'curl_strnequal' => 'API',
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'curl_unescape' => 'API',
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'curl_url' => 'API',
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'curl_url_cleanup' => 'API',
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'curl_url_dup' => 'API',
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'curl_url_get' => 'API',
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'curl_url_set' => 'API',
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'curl_url_strerror' => 'API',
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'curl_version' => 'API',
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'curl_version_info' => 'API',
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'curl_easy_header' => 'API',
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'curl_easy_nextheader' => 'API',
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'curl_ws_meta' => 'API',
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'curl_ws_recv' => 'API',
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'curl_ws_send' => 'API',
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# the following functions are provided globally in debug builds
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'curl_easy_perform_ev' => 'debug-build',
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);
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sub doublecheck {
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my ($f, $used) = @_;
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open(F, "git grep -le '$f\\W' -- lib ${unittests}packages|");
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my @also;
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while(<F>) {
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my $e = $_;
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chomp $e;
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if($e =~ /\.[c]$/) {
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if($e !~ /^lib\/${used}\.c/) {
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push @also, $e;
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}
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}
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}
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close(F);
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return @also;
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}
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open(N, "nm $file|") ||
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die;
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my %exist;
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my %uses;
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my $file;
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while (<N>) {
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my $l = $_;
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chomp $l;
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if($l =~ /^([0-9a-z_-]+)\.o:/) {
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$file = $1;
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}
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if($l =~ /^([0-9a-f]+) T (.*)/) {
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my ($name)=($2);
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#print "Define $name in $file\n";
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$file =~ s/^libcurl_la-//;
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$exist{$name} = $file;
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}
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elsif($l =~ /^ U (.*)/) {
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my ($name)=($1);
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#print "Uses $name in $file\n";
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$uses{$name} .= "$file, ";
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}
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}
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close(N);
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my $err;
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for(sort keys %exist) {
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#printf "%s is defined in %s, used by: %s\n", $_, $exist{$_}, $uses{$_};
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if(!$uses{$_}) {
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# this is a symbol with no "global" user
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if($_ =~ /^curl_dbg_/) {
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# we ignore the memdebug symbols
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}
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elsif($_ =~ /^curl_/) {
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if(!$api{$_}) {
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# not present in the API, or for debug-builds
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print STDERR "Bad curl-prefix: $_\n";
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$err++;
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}
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}
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elsif($wl{$_}) {
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#print "$_ is WL\n";
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}
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else {
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my $c = $_;
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my @also = doublecheck($c, $exist{$c});
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if(!scalar(@also)) {
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printf "%s in %s\n", $c, $exist{$c};
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$err++;
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}
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# foreach my $a (@also) {
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# print " $a\n";
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# }
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}
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}
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elsif($_ =~ /^curl_/) {
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# global prefix, make sure it is "blessed"
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if(!$api{$_}) {
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# not present in the API, or for debug-builds
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if($_ !~ /^curl_dbg_/) {
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# ignore the memdebug symbols
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print STDERR "Bad curl-prefix $_\n";
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$err++;
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}
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}
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}
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}
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exit $err;
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