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|
@libraries = ();
@includes = ();
%defines = ();
%read_files = ();
$debug = 0;
$includes[++$#includes] = ".";
$filename = "";
foreach $arg (@ARGV) {
if ($arg =~ /^-d$/) {
$debug = 1;
}
elsif ($arg =~ /^-D(.*)$/) {
local($def) = $1;
local($symbol) = $1;
$def =~ s/^.*=//;
$symbol =~ s/=.*$//;
$defines{$symbol} = $def;
}
elsif ($arg =~ /^-I(.*)$/) {
$includes[++$#includes] = $1;
}
else {
$filename = $arg;
}
}
if ($filename eq "") {
print STDERR "listlibs.pl: require a filename\n";
exit 1;
}
if (-d "$filename") {
%current_includes = ();
@libraries = ();
%known_libs = ();
%known_includes = ();
&process_directory($filename);
}
else {
&process_file($filename);
%current_includes = ();
@libraries = ();
%known_libs = ();
%known_includes = ();
&find_libraries($filename);
}
@libraries = reverse(@libraries);
print "got $#libraries of them\n" if ($debug);
&substitute_defines();
foreach $i (0..$#libraries) {
printf "%s", $libraries[$i];
if ($i < $#libraries) { printf " "; }
}
printf "\n";
###########################################################################
sub process_file {
local($filename) = shift;
if ($debug) {
printf "process_file: filename: %s\n", $filename;
}
# find the file
local($ifile) = "";
if ($filename =~ /^\//) {
$ifile = $filename;
}
else {
foreach $include (@includes) {
$ifile = "$include/$filename";
if ($debug) {
#printf "process_file: looking for: %s\n", $ifile;
}
if (-f $ifile) { last; }
}
}
if ($ifile eq "" || ! -f $ifile) {
print STDERR "listlibs.pl: couldn't find file $file\n";
exit 1;
}
# read the file
local($filecontents) = "";
open(IFILE,"<$ifile");
while (<IFILE>) {
if (/^\s*$/) { next; }
$filecontents = "$filecontents$_";
}
close(IFILE);
$read_files{$filename} = $filecontents;
# an empty file will look like a new file below so put in a newline
if ($read_files{$filename} eq "") {
$read_files{$filename} = "\n"
}
# read in other files referenced by this file
foreach $line (&get_lines($filecontents)) {
if ($line =~ /^\#\s*include\s*<(.+)>/) {
local($newfile) = $1;
if ($read_files{$newfile} eq "") {
&process_file($newfile);
}
}
}
}
sub get_lines {
local($filecontents) = shift;
local(@lines) = ();
local($ifdepth) = 0;
while ($filecontents ne "") {
# get next line
$filecontents =~ s/^(.*)\n//;
local($line) = $1;
# remove comments
$line =~ s/\/\/.*$//;
# remove leading trailing whitespace
$line =~ s/^\s*//;
$line =~ s/\s*$//;
# this only handles ifdef's that are one level deep
if ($line =~ /\#\s*ifdef\s+([a-zA-Z_]\w*)/) {
local($symbol) = $1;
if (! defined $defines{$symbol}) {
while ($filecontents ne "") {
$filecontents =~ s/^(.*)\n//;
local($tline) = $1;
last if ($tline =~ /\#\s*endif/);
}
}
}
elsif ($line =~ /\#\s*endif/) {
# eat this endif
}
else {
$lines[++$#lines] = $line if ($line ne "");
}
}
return @lines;
}
sub find_libraries {
local($filename) = shift;
if ($current_includes{$filename} == 1) {
print STDERR "listlibs.pl: recursive include detected for $filename\n";
exit 1;
}
$current_includes{$filename} = 1;
foreach $line (reverse(&get_lines($read_files{$filename}))) {
if ($line =~ /^\#\s*include\s*<(.+)>/) {
local($newfile) = $1;
if ($known_includes{$newfile} != 1) {
$known_includes{$newfile} = 1;
&find_libraries($newfile);
}
}
elsif ($known_libs{$line} != 1) {
$known_libs{$line} = 1;
$libraries[++$#libraries] = $line;
}
}
delete $current_includes{$filename};
}
sub substitute_defines {
local($i);
local($symbol);
foreach $i (0..$#libraries) {
foreach $symbol (keys(%defines)) {
$libraries[$i] =~ s/$symbol/$defines{$symbol}/g;
}
}
}
sub process_directory {
local ($dir) = shift;
opendir(DIR,"$dir");
local (@files) = readdir(DIR);
closedir(DIR);
local ($i);
foreach $i (@files) {
if ("$i" eq "." || "$i" eq "..") {
# skip
}
elsif (-d "$dir/$i") {
process_directory("$dir/$i");
}
elsif ("$i" eq "LIBS.h") {
process_file("$dir/$i");
&find_libraries("$dir/$i");
}
}
}
|
