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allow printing of column values from mdb_data_dump()

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brianb 2000-03-11 02:51:32 +00:00
parent 654cbac70f
commit d37f5058ae
1 changed files with 70 additions and 4 deletions
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74
src/libmdb/data.c
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@ -19,14 +19,18 @@
#include "mdbtools.h"
char *mdb_col_to_string(const char *buf, int datatype, int size);
void mdb_data_dump(MdbTableDef *table)
{
MdbColumn col;
MdbHandle *mdb = table->entry->mdb;
int i, pg_num;
int rows;
int i, j, pg_num;
int rows, num_cols, var_cols, fixed_cols;
int row_start, row_end;
int fixed_cols_found, var_cols_found;
int col_start, len;
int eod; /* end of data */
for (pg_num=1;pg_num<=table->num_pgs;pg_num++) {
mdb_read_pg(mdb,table->first_data_pg + pg_num);
@ -35,10 +39,72 @@ int row_start, row_end;
row_end=2047;
for (i=0;i<rows;i++) {
row_start = mdb_get_int16(mdb,10+i*2);
fprintf(stdout,"Row %d bytes %d to %d\n", i, row_start, row_end);
fprintf(stdout,"Pg %d Row %d bytes %d to %d\n", pg_num, i, row_start, row_end);
fprintf(stdout,"#cols: %-3d #varcols %-3d\n", mdb->pg_buf[row_start], mdb->pg_buf[row_end-1]);
num_cols = mdb->pg_buf[row_start];
var_cols = mdb->pg_buf[row_end-1];
fixed_cols = num_cols - var_cols;
eod = mdb->pg_buf[row_end-2-var_cols];
fprintf(stdout,"#cols: %-3d #varcols %-3d EOD %-3d\n", num_cols, var_cols, eod);
col_start = 1;
fixed_cols_found = 0;
var_cols_found = 0;
for (j=0;j<table->num_cols;j++) {
col = g_array_index(table->columns,MdbColumn,j);
if (mdb_is_fixed_col(&col) &&
++fixed_cols_found <= fixed_cols) {
fprintf(stdout,"fixed col %s = %s\n",col.name,mdb_col_to_string(&mdb->pg_buf[row_start + col_start],col.col_type,NULL));
col_start += col.col_size;
}
}
for (j=0;j<table->num_cols;j++) {
col = g_array_index(table->columns,MdbColumn,j);
if (!mdb_is_fixed_col(&col) &&
++var_cols_found <= var_cols) {
col_start = mdb->pg_buf[row_end-1-var_cols_found];
if (var_cols_found==var_cols)
len=eod - col_start;
else
len=col_start - mdb->pg_buf[row_end-1-var_cols_found-1];
fprintf(stdout,"coltype %d colstart %d len %d\n",col.col_type,col_start, len);
fprintf(stdout,"var col %s = %s\n", col.name, mdb_col_to_string(&mdb->pg_buf[row_start + col_start],col.col_type,len));
col_start += len;
}
}
row_end = row_start-1;
}
}
}
int mdb_is_fixed_col(MdbColumn *col)
{
/* FIX ME -- not complete */
if (col->col_type==MDB_TEXT)
return FALSE;
else
return TRUE;
}
char *mdb_col_to_string(const char *buf, int datatype, int size)
{
/* FIX ME -- fix for big endian boxes */
static char text[256];
switch (datatype) {
case MDB_INT:
sprintf(text,"%ld",*((gint16 *)buf));
return "test";
break;
case MDB_LONGINT:
sprintf(text,"%ld",*((gint32 *)buf));
return text;
break;
case MDB_TEXT:
strncpy(text, buf, size);
text[size]='\0';
return text;
break;
}
return NULL;
}