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
  14         /* Max. number of known encoding including ENCODING_NONE. */
  15         ENCODINGS_KNOWN,
  16 };
  17
  18 struct stream_encoded {
  19         enum stream_encoding encoding;
  20         void *data;
  21 };
  22
  23 struct decoding_backend {
  24         const unsigned char *name;
  25         const unsigned char *const *extensions;
  26         int (*open)(struct stream_encoded *stream, int fd);
  27         int (*read)(struct stream_encoded *stream, unsigned char *data, int len);
  28         unsigned char *(*decode_buffer)(unsigned char *data, int len, int *new_len);
  29         void (*close)(struct stream_encoded *stream);
  30 };
  31
  32 struct stream_encoded *open_encoded(int, enum stream_encoding);
  33 int read_encoded(struct stream_encoded *, unsigned char *, int);
  34 unsigned char *decode_encoded_buffer(enum stream_encoding encoding, unsigned char *data, int len, int *new_len);
  35 void close_encoded(struct stream_encoded *);
  36
  37 const unsigned char *const *listext_encoded(enum stream_encoding);
  38 enum stream_encoding guess_encoding(unsigned char *filename);
  39 const unsigned char *get_encoding_name(enum stream_encoding encoding);
  40
  41 /* Read from open @stream into the @page string */
  42 struct connection_state
  43 read_file(struct stream_encoded *stream, int readsize, struct string *page);
  44
  45 /* Reads the file with the given @filename into the string @source. */
  46 struct connection_state read_encoded_file(struct string *filename, struct string *source);
  47
  48 #endif