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- first pass at a c level database dumper

    1: #include <stdio.h>
    2: #include <stdlib.h>
    3: #include <unistd.h>
    4: #include <gdbm.h>
    5: #include <errno.h>
    6: #include <string.h>
    7: 
    8: void usage()
    9: {
   10:   printf("\nUsage:\ngdbm_convertor -f <gdbm file to convert>\n");
   11: }
   12: 
   13: void read_db(char *filename)
   14: {
   15:   GDBM_FILE db;
   16:   datum key, nextkey, content;
   17:   db = gdbm_open(filename, 0, GDBM_READER, 0, 0);
   18: 
   19:   if (db == NULL) {
   20:     printf("Unable to open db %s beacsue of %s (%d) -- %s (%d)\n",filename,
   21: 	   gdbm_strerror(gdbm_errno),gdbm_errno,strerror(errno),errno);
   22:     return;
   23:   }
   24:   key = gdbm_firstkey(db);
   25: 
   26:   while ( key.dptr ) {
   27:     content = gdbm_fetch(db, key);
   28:     fwrite(key.dptr, key.dsize, sizeof(char), stdout);
   29:     printf(" -> ");
   30:     fwrite(content.dptr, content.dsize, sizeof(char), stdout);
   31:     printf("\n");
   32:     free(content.dptr);
   33:     nextkey = gdbm_nextkey(db, key);
   34:     free(key.dptr);
   35:     key = nextkey;
   36:   }
   37: }
   38: 
   39: int main(int argc, char  **argv) 
   40: {
   41: 
   42:   int c;
   43:   char *filename=NULL;
   44:   while (1) {
   45:     c = getopt(argc,argv,"f:");  
   46:     if (c == -1)
   47:       break;
   48:     switch (c) {
   49:     case 'f':
   50:       filename = optarg;
   51:     }
   52:   }
   53: 
   54:   if (filename == NULL) {
   55:     usage();
   56:     return 1;
   57:   }
   58: 
   59:   read_db(filename);
   60: 
   61:   return 0;
   62: }
   63: