void cListBox::SortByColumn(string ColumnName, bool Descending)
{
if (m_Items == 0) // any items in list?
return;
// Find the column id from the supplied column name
int col_id = -1, col_ref = -1;
if (ColumnName == "<[=-UNSORT_THIS_BITCH-=]>")
{ // we're un-sorting, so reference the extra "unsorted order" column
col_id = LISTBOX_COLUMNS;
col_ref = -1;
}
else
{
for (int j = 0; j<m_ColumnCount; j++)
{
if (m_ColumnName[j] == ColumnName)
{
col_id = m_ColumnSort[j];
col_ref = j;
break;
}
}
if (col_id == -1) // match found for column name?
return;
}
// Sort the list
m_Items = BubbleSortList(m_Items, m_NumElements, col_id, Descending);
// Update m_LastItem and m_Position
cListItem* current = m_Items;
int count = 0;
while (current)
{
if (current->m_Selected)
{
if (count < m_Position)
m_Position = count;
else if (count >(m_Position + m_NumDrawnElements - 1))
{
while (count > (m_Position + m_NumDrawnElements))
m_Position++;
m_Position++;
}
}
if (current->m_Next == 0)
{
m_LastItem = current;
break;
}
count++;
current = current->m_Next;
}
if (m_ShowHeaders && col_ref > -1)
{
// Prepare Ascending/Descending image indicator for column header
int dwidth;
if (col_ref < m_ColumnCount - 1)
dwidth = m_ColumnOffset[col_ref + 1] - 6 - m_ColumnOffset[col_ref];
else
dwidth = m_eWidth - 19 - m_ColumnOffset[col_ref];
if (col_ref == 0)
dwidth -= 2 + m_BorderSize;
double stretch = (double)dwidth / (double)m_HeaderSortDesc->w;
if (Descending)
m_HeaderSortBack = zoomSurface(m_HeaderSortDesc, stretch, 1, 1);
else
m_HeaderSortBack = zoomSurface(m_HeaderSortAsc, stretch, 1, 1);
}
m_ScrollBar->SetTopValue(m_Position);
}
void DoSort(FILE *fp)
{
/*
Step1 a
Open the file and generate linked list
*/
trnx *t;
char line[BUFFER];
char *tokens;
char *op,*timeval,*amt,*description;
int errCheck = 1;
/*
Generate a list and Initialise it
*/
My402List list;
memset(&list,0,sizeof(My402List));
(void)My402ListInit(&list);
/*
*/
fgets(line,BUFFER,fp);
while (!feof(fp))
{
/*
Perform the necessary error checks for the line
*/
errCheck = errorCheckLine(line);
if (errCheck == 0)
{
exit(0);
}
/*
Extract each element in the file and store it
each attribute of transaction.
*/
t = malloc(sizeof(trnx));
tokens = malloc(strlen(line));
amt = malloc(strlen(line));
strcpy(tokens,line);
op = strtok(tokens,"\t");
timeval = strtok(NULL,"\t");
amt = strtok(NULL,"\t");
description = strtok(NULL,"\t");
/*
Error Check for each of the tokens in the line
*/
/*
Operator
*/
errCheck = 1;
errCheck = errCheckOp(t,op);
if (errCheck == 0)
{
fputs("Operator is invalid.Must be +/-\n",stderr);
exit(0);
}
/*
Time
*/
errCheck = 1;
errCheck = errCheckTime(&list,t,timeval);
if (errCheck == 0)
{
fputs("Timestamp is invalid.\n",stderr);
exit(0);
}
/*
Amount
*/
errCheck = 1;
errCheck = errCheckAmount(t,amt);
if (errCheck == 0)
{
fputs("Amount is invalid.\n",stderr);
exit(0);
}
/*
Description
*/
errCheck = errCheckDesc(t,description);
if (errCheck == 0)
{
exit(0);
}
/*
Create node in the list
*/
(void)My402ListAppend(&list,(void *)t);
/*
Get next element in the list
*/
//free(tokens);
//free(amt);
fgets(line,BUFFER,fp);
}
fclose(fp);
//PrintList(&list);
BubbleSortList(&list,list.num_members);
//PrintList(&list);
DisplayOutput(&list);
}
