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Annotation of loncom/debugging_tools/dump_db.c, revision 1.1

1.1     ! albertel    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: