src/encoding/encoding.h

   1 #ifndef EL__ENCODING_ENCODING_H
   2 #define EL__ENCODING_ENCODING_H
   3
   4 #include "network/state.h"
   5 #include "util/string.h"
   6
   7 enum stream_encoding {
   8         ENCODING_NONE = 0,
   9         ENCODING_GZIP,
  10         ENCODING_BZIP2,
  11         ENCODING_LZMA,
  12         ENCODING_DEFLATE,
  13         ENCODING_BROTLI,
  14
  15         /* Max. number of known encoding including ENCODING_NONE. */
  16         ENCODINGS_KNOWN,
  17 };
  18
  19 struct stream_encoded {
  20         enum stream_encoding encoding;
  21         void *data;
  22 };
  23
  24 struct decoding_backend {
  25         const unsigned char *name;
  26         const unsigned char *const *extensions;
  27         int (*open)(struct stream_encoded *stream, int fd);
  28         int (*read)(struct stream_encoded *stream, unsigned char *data, int len);
  29         unsigned char *(*decode_buffer)(struct stream_encoded *stream, unsigned char *data, int len, int *new_len);
  30         void (*close)(struct stream_encoded *stream);
  31 };
  32
  33 struct stream_encoded *open_encoded(int, enum stream_encoding);
  34 int read_encoded(struct stream_encoded *, unsigned char *, int);
  35 unsigned char *decode_encoded_buffer(struct stream_encoded *stream, enum stream_encoding encoding, unsigned char *data, int len, int *new_len);
  36 void close_encoded(struct stream_encoded *);
  37
  38 const unsigned char *const *listext_encoded(enum stream_encoding);
  39 enum stream_encoding guess_encoding(unsigned char *filename);
  40 const unsigned char *get_encoding_name(enum stream_encoding encoding);
  41
  42 /* Read from open @stream into the @page string */
  43 struct connection_state
  44 read_file(struct stream_encoded *stream, int readsize, struct string *page);
  45
  46 /* Reads the file with the given @filename into the string @source. */
  47 struct connection_state read_encoded_file(struct string *filename, struct string *source);
  48
  49 #endif