/* compare two lines. return TRUE if they are the same. uses
* ignore_blanks to determine whether to ignore any
* spaces/tabs in the comparison.
*/
BOOL
line_compare(LINE line1, LINE line2)
{
LPSTR p1, p2;
/* Assert: At least one of them is not null ??? */
if ((line1 == NULL) || (line2 == NULL)) {
/* null line handles do not compare */
return(FALSE);
}
/* check that the hashcodes match */
if (line_gethashcode(line1) != line_gethashcode(line2)) {
return(FALSE);
}
/* hashcodes match - are the lines really the same ? */
/* note that this is coupled to gutils\utils.c in definition of blank */
p1 = line_gettext(line1);
p2 = line_gettext(line2);
do {
if (ignore_blanks) {
while ( (*p1 == ' ') || (*p1 == '\t')) {
p1++;
}
while ( (*p2 == ' ') || (*p2 == '\t')) {
p2++;
}
}
if (*p1 != *p2) {
return(FALSE);
}
} while ( (*p1++ != '\0') && (*p2++ != '\0'));
return(TRUE);
}
/*
* return the text associated with a given column of a given row.
* Return a pointer that does not need to be freed after use - ie
* a pointer into our data somewhere, not a copy
*/
LPSTR
view_gettext(VIEW view, long row, int col)
{
int line;
int state;
LPSTR pstr;
HRESULT hr;
pstr = NULL; /* kill spurious diagnostic */
if (view == NULL) {
return(NULL);
}
ViewEnter();
if ((0 > row) || (row >= view->rows)) {
ViewLeave();
return(NULL);
}
if (view->bExpand) {
/* we are in expand mode */
state = section_getstate(view->pLines[row].section);
switch (col) {
case 0:
/* row nr */
/* line numbers can be from either original file
* this is a menu-selectable option
*/
line = 0;
switch (line_numbers) {
case IDM_NONRS:
pstr = NULL;
break;
case IDM_LNRS:
line = view->pLines[row].nr_left;
if (state == STATE_MOVEDRIGHT
|| state == STATE_SIMILARRIGHT) {
line = -line;
}
break;
case IDM_RNRS:
line = view->pLines[row].nr_right;
if (state == STATE_MOVEDLEFT
|| state == STATE_SIMILARLEFT) {
line = -line;
}
break;
}
if (line == 0) {
ViewLeave();
return(NULL);
}
if (line < 0) {
/* lines that are moved appear twice.
* show the correct-sequence line nr
* for the out-of-seq. copy in brackets.
*/
hr = StringCchPrintf(view->nrtext, 12, "(%d)", abs(line));
if (FAILED(hr)) {
OutputError(hr, IDS_SAFE_PRINTF);
return(NULL);
}
} else {
hr = StringCchPrintf(view->nrtext, 12, "%d", line);
if (FAILED(hr)) {
OutputError(hr, IDS_SAFE_PRINTF);
return(NULL);
}
}
pstr = view->nrtext;
break;
case 1:
/* tag text - represents the state of the line */
switch (state) {
case STATE_SAME:
pstr = " ";
break;
case STATE_LEFTONLY:
case STATE_SIMILARLEFT:
pstr = " <! ";
break;
case STATE_RIGHTONLY:
case STATE_SIMILARRIGHT:
pstr = " !> ";
break;
case STATE_MOVEDLEFT:
pstr = " <- ";
break;
case STATE_MOVEDRIGHT:
pstr = " -> ";
break;
}
break;
case 2:
/* main text - line */
pstr = line_gettext(view->pLines[row].line);
break;
}
} else {
/* outline mode */
switch (col) {
case 0:
/* row number - just the line number */
hr = StringCchPrintf(view->nrtext, 12, "%d", row+1);
if (FAILED(hr)) {
OutputError(hr, IDS_SAFE_PRINTF);
return(NULL);
}
pstr = view->nrtext;
break;
case 1:
/* tag */
pstr = compitem_gettext_tag(view->pItems[row]);
break;
case 2:
/* result text */
pstr = compitem_gettext_result(view->pItems[row]);
break;
}
}
ViewLeave();
return(pstr);
}
