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File:  [LON-CAPA] / loncom / debugging_tools / dump_db.c
Revision 1.2: download - view: text, annotated - select for diffs
Thu Aug 24 22:46:30 2006 UTC (17 years, 8 months ago) by albertel
Branches: MAIN
CVS tags: version_2_9_X, version_2_9_99_0, version_2_9_1, version_2_9_0, version_2_8_X, version_2_8_99_1, version_2_8_99_0, version_2_8_2, version_2_8_1, version_2_8_0, version_2_7_X, version_2_7_99_1, version_2_7_99_0, version_2_7_1, version_2_7_0, version_2_6_X, version_2_6_99_1, version_2_6_99_0, version_2_6_3, version_2_6_2, version_2_6_1, version_2_6_0, version_2_5_X, version_2_5_99_1, version_2_5_99_0, version_2_5_2, version_2_5_1, version_2_5_0, version_2_4_X, version_2_4_99_0, version_2_4_2, version_2_4_1, version_2_4_0, version_2_3_X, version_2_3_99_0, version_2_3_2, version_2_3_1, version_2_3_0, version_2_2_X, version_2_2_99_1, version_2_2_99_0, version_2_2_2, version_2_2_1, version_2_12_X, version_2_11_X, version_2_11_4_uiuc, version_2_11_4_msu, version_2_11_4, version_2_11_3_uiuc, version_2_11_3_msu, version_2_11_3, version_2_11_2_uiuc, version_2_11_2_msu, version_2_11_2_educog, version_2_11_2, version_2_11_1, version_2_11_0_RC3, version_2_11_0_RC2, version_2_11_0_RC1, version_2_11_0, version_2_10_X, version_2_10_1, version_2_10_0_RC2, version_2_10_0_RC1, version_2_10_0, loncapaMITrelate_1, language_hyphenation_merge, language_hyphenation, bz6209-base, bz6209, bz5969, bz2851, PRINT_INCOMPLETE_base, PRINT_INCOMPLETE, HEAD, GCI_3, GCI_2, GCI_1, BZ5971-printing-apage, BZ5434-fox, BZ4492-merge, BZ4492-feature_horizontal_radioresponse, BZ4492-feature_Support_horizontal_radioresponse, BZ4492-Support_horizontal_radioresponse
- adding scripts to allow morphing 32bit to 64 bit db

    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: #include <ctype.h>
    8: 
    9: static const char c2x_table[] = "0123456789abcdef";
   10: 
   11: void c2x(unsigned what, unsigned char prefix, char *where,
   12: 	 unsigned int offset)
   13: {
   14:     where[offset] = prefix;
   15:     where[offset+1] = c2x_table[what >> 4];
   16:     where[offset+2] = c2x_table[what & 0xf];
   17: }
   18: 
   19: 
   20: datum* http_escape(datum* data)
   21: {
   22:   datum *escaped_data;
   23:   escaped_data = malloc(sizeof(datum));
   24:   escaped_data->dsize =  (3 * data->dsize) + 3;
   25:   escaped_data->dptr  = malloc(escaped_data->dsize);
   26:   unsigned int c,i,j;
   27: 
   28:   j=0;
   29:   for (i=0;i<data->dsize;i++) {
   30:     c = data->dptr[i];
   31:     if (!isalnum(c)) {
   32:       c2x(c, '%', escaped_data->dptr, j);
   33:       j+=3;
   34:     } else {
   35:       escaped_data->dptr[j] = c;
   36:       j++;
   37:     }
   38:   }
   39:   escaped_data->dsize=j;
   40:   return escaped_data;
   41: }
   42: 
   43: 
   44: void usage()
   45: {
   46:   printf("\nUsage:\ngdbm_convertor -f <gdbm file to convert>\n");
   47: }
   48: 
   49: void read_db(char *filename)
   50: {
   51:   GDBM_FILE db;
   52:   datum key, nextkey, content;
   53:   datum *escaped_key, *escaped_content;
   54:   db = gdbm_open(filename, 0, GDBM_READER, 0, 0);
   55: 
   56:   if (db == NULL) {
   57:     printf("ERROR:Unable to open db %s because of %s (%d) -- %s (%d)\n",
   58: 	   filename,gdbm_strerror(gdbm_errno),gdbm_errno,strerror(errno),
   59: 	   errno);
   60:     return;
   61:   }
   62:   key = gdbm_firstkey(db);
   63: 
   64:   while ( key.dptr ) {
   65:     content = gdbm_fetch(db, key);
   66:     escaped_key     = http_escape(&key);
   67:     escaped_content = http_escape(&content);
   68:     fwrite(escaped_key->dptr,
   69: 	   escaped_key->dsize, sizeof(char), stdout);
   70:     printf(" -> ");
   71:     fwrite(escaped_content->dptr,
   72: 	   escaped_content->dsize, sizeof(char), stdout);
   73:     printf("\n");
   74:     free(content.dptr);
   75:     free(escaped_content->dptr);
   76:     free(escaped_content);
   77:     free(escaped_key->dptr);
   78:     free(escaped_key);
   79:     nextkey = gdbm_nextkey(db, key);
   80:     free(key.dptr);
   81:     key = nextkey;
   82:   }
   83: }
   84: 
   85: int main(int argc, char  **argv) 
   86: {
   87: 
   88:   int c;
   89:   char *filename=NULL;
   90:   while (1) {
   91:     c = getopt(argc,argv,"f:");  
   92:     if (c == -1)
   93:       break;
   94:     switch (c) {
   95:     case 'f':
   96:       filename = optarg;
   97:     }
   98:   }
   99: 
  100:   if (filename == NULL) {
  101:     usage();
  102:     return 1;
  103:   }
  104: 
  105:   read_db(filename);
  106: 
  107:   return 0;
  108: }
  109: 
  110:
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