contrib/lar/lar.h

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <stdint.h>
   5 #include <fcntl.h>
   6 #include <string.h>
   7 #include <arpa/inet.h>
   8 #include <sys/types.h>
   9 #include <sys/mman.h>
  10 #include <sys/stat.h>
  11
  12
  13 int errno;
  14
  15 #define LAR_DIE(s) \
  16         do { \
  17                 fprintf(stderr, "%s(%i): %s(): %s\n", \
  18                         __FILE__, __LINE__, __FUNCTION__, s); \
  19                 if( errno ) fprintf(stderr, "%s(%i): %s\n", \
  20                         __FILE__, __LINE__, strerror(errno) ); \
  21                 exit(1); \
  22         } while(0)
  23
  24
  25 #define LAR_FNAME_BUFFER 1024
  26 #define LAR_FNAME(s) char s[LAR_FNAME_BUFFER]
  27
  28
  29 struct lar_index_item {
  30         uint32_t noffset;
  31         uint32_t nlength;
  32         uint32_t foffset;
  33         uint32_t flength;
  34         uint16_t type;
  35         uint16_t flags;
  36         struct lar_index_item *next;
  37 };
  38
  39 struct lar_member_item {
  40         uint16_t type;
  41         uint16_t flags;
  42         uint32_t length;
  43         char *data;
  44         char *mmap;
  45         size_t mlen;
  46 };
  47
  48 struct lar_archive_handle {
  49         int fd;
  50         off_t length;
  51         char filename[LAR_FNAME_BUFFER];
  52         struct lar_index_item *index;
  53 };
  54
  55 typedef struct lar_index_item lar_index;
  56 typedef struct lar_member_item lar_member;
  57 typedef struct lar_archive_handle lar_archive;
  58
  59
  60 int lar_read32( int fd, uint32_t *val );
  61 int lar_read16( int fd, uint16_t *val );
  62
  63 lar_index * lar_get_index( lar_archive *ar );
  64
  65 uint32_t lar_get_filename( lar_archive *ar,
  66         lar_index *idx_ptr, char *filename );
  67
  68 lar_member * lar_open_member( lar_archive *ar, const char *name );
  69
  70 int lar_close_member( lar_member *member );
  71
  72 lar_archive * lar_open( const char *filename );
  73
  74 int lar_close( lar_archive *ar );
  75
  76