contrib/lar/lar.h

   1 #ifndef __LAR_H
   2 #define __LAR_H
   3
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <unistd.h>
   7 #include <stdint.h>
   8 #include <fcntl.h>
   9 #include <string.h>
  10 #include <errno.h>
  11 #include <arpa/inet.h>
  12 #include <sys/types.h>
  13 #include <sys/mman.h>
  14 #include <sys/stat.h>
  15
  16
  17 #define LAR_DIE(s) \
  18         do { \
  19                 fprintf(stderr, "%s(%i): %s(): %s\n", \
  20                         __FILE__, __LINE__, __FUNCTION__, s); \
  21                 if( errno ) fprintf(stderr, "%s(%i): %s\n", \
  22                         __FILE__, __LINE__, strerror(errno) ); \
  23                 exit(1); \
  24         } while(0)
  25
  26
  27 #define LAR_FNAME_BUFFER 1024
  28 #define LAR_FNAME(s) char s[LAR_FNAME_BUFFER]
  29
  30 #ifdef __WIN32__
  31 #define LAR_DIRSEP      '\\'
  32 #else
  33 #define LAR_DIRSEP      '/'
  34 #endif
  35
  36
  37 struct lar_index_item {
  38         uint32_t noffset;
  39         uint32_t nlength;
  40         uint32_t foffset;
  41         uint32_t flength;
  42         uint16_t type;
  43         uint16_t flags;
  44         struct lar_index_item *next;
  45 };
  46
  47 struct lar_member_item {
  48         uint16_t type;
  49         uint16_t flags;
  50         uint32_t length;
  51         char *data;
  52         char *mmap;
  53         size_t mlen;
  54 };
  55
  56 struct lar_archive_handle {
  57         int fd;
  58         off_t length;
  59         char filename[LAR_FNAME_BUFFER];
  60         struct lar_index_item *index;
  61 };
  62
  63 typedef struct lar_index_item lar_index;
  64 typedef struct lar_member_item lar_member;
  65 typedef struct lar_archive_handle lar_archive;
  66
  67
  68 int lar_read32( int fd, uint32_t *val );
  69 int lar_read16( int fd, uint16_t *val );
  70
  71 lar_index * lar_get_index( lar_archive *ar );
  72
  73 uint32_t lar_get_filename( lar_archive *ar,
  74         lar_index *idx_ptr, char *filename );
  75
  76 lar_member * lar_open_member( lar_archive *ar, const char *name );
  77
  78 int lar_close_member( lar_member *member );
  79
  80 lar_archive * lar_open( const char *filename );
  81
  82 int lar_close( lar_archive *ar );
  83
  84 lar_archive * lar_find_archive( const char *package, const char *path );
  85
  86 lar_member * lar_find_member( lar_archive *ar, const char *package );
  87
  88 #endif