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Support for deflate compression (#360)

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rymis 2020-02-24 17:48:00 +01:00 • committed by GitHub
parent 9a663aa94e
commit f2bb9c45d6
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2 changed files with 24 additions and 8 deletions
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19
httplib.h
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@ -1667,14 +1667,15 @@ inline bool compress(std::string &content) {
class decompressor {
public:
decompressor() {
std::memset(&strm, 0, sizeof(strm));
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
// 15 is the value of wbits, which should be at the maximum possible value
// to ensure that any gzip stream can be decoded. The offset of 16 specifies
// that the stream to decompress will be formatted with a gzip wrapper.
is_valid_ = inflateInit2(&strm, 16 + 15) == Z_OK;
// to ensure that any gzip stream can be decoded. The offset of 32 specifies
// that the stream type should be automatically detected either gzip or deflate.
is_valid_ = inflateInit2(&strm, 32 + 15) == Z_OK;
}
~decompressor() { inflateEnd(&strm); }
@ -1872,12 +1873,14 @@ bool read_content(Stream &strm, T &x, size_t payload_max_length, int &status,
#ifdef CPPHTTPLIB_ZLIB_SUPPORT
decompressor decompressor;
if (!decompressor.is_valid()) {
status = 500;
return false;
}
std::string content_encoding = x.get_header_value("Content-Encoding");
if (content_encoding.find("gzip") != std::string::npos
|| content_encoding.find("deflate") != std::string::npos) {
if (!decompressor.is_valid()) {
status = 500;
return false;
}
if (x.get_header_value("Content-Encoding") == "gzip") {
out = [&](const char *buf, size_t n) {
return decompressor.decompress(
buf, n, [&](const char *buf, size_t n) { return receiver(buf, n); });