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don't break if no zlib

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This commit is contained in:
David Rose 2002-08-08 18:31:17 +00:00
parent 246b224786
commit 63aeb3b130
1 changed files with 30 additions and 10 deletions
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40
panda/src/express/multifile.cxx
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@ -762,10 +762,17 @@ open_read_subfile(int index) {
subfile->_data_start + (streampos)subfile->_data_length);
if ((subfile->_flags & SF_compressed) != 0) {
#ifndef HAVE_ZLIB
express_cat.error()
<< "zlib not compiled in; cannot read compressed multifiles.\n";
delete stream;
return NULL;
#else // HAVE_ZLIB
// Oops, the subfile is compressed. So actually, return an
// IDecompressStream that wraps around the ISubStream.
IDecompressStream *wrapper = new IDecompressStream(stream, true);
stream = wrapper;
#endif // HAVE_ZLIB
}
if (stream->fail()) {
@ -998,8 +1005,14 @@ string Multifile::
add_new_subfile(const string &subfile_name, Subfile *subfile,
int compression_level) {
if (compression_level != 0) {
#ifndef HAVE_ZLIB
express_cat.warning()
<< "zlib not compiled in; cannot generated compressed multifiles.\n";
compression_level = 0;
#else // HAVE_ZLIB
subfile->_flags |= SF_compressed;
subfile->_compression_level = compression_level;
#endif // HAVE_ZLIB
}
if (_next_index != (streampos)0) {
@ -1369,6 +1382,11 @@ write_data(ostream &write, istream *read, streampos fpos) {
} else {
// We do have source data. Copy it in, and also measure its
// length.
#ifndef HAVE_ZLIB
// Without ZLIB, we can't support compression. The flag had
// better not be set.
nassertr((_flags & SF_compressed) == 0, fpos);
#else // HAVE_ZLIB
if ((_flags & SF_compressed) != 0) {
// Write it compressed.
streampos write_start = write.tellp();
@ -1383,17 +1401,19 @@ write_data(ostream &write, istream *read, streampos fpos) {
zstream.close();
streampos write_end = write.tellp();
_data_length = (size_t)(write_end - write_start);
} else {
// Write it uncompressed.
_uncompressed_length = 0;
int byte = source->get();
while (!source->eof() && !source->fail()) {
_uncompressed_length++;
write.put(byte);
byte = source->get();
} else
#endif // HAVE_ZLIB
{
// Write it uncompressed.
_uncompressed_length = 0;
int byte = source->get();
while (!source->eof() && !source->fail()) {
_uncompressed_length++;
write.put(byte);
byte = source->get();
}
_data_length = _uncompressed_length;
}
_data_length = _uncompressed_length;
}
}
// We can't set _data_start until down here, after we have read the