static int
readCharacters_ScreenScreen (const ScreenBox *box, ScreenCharacter *buffer) {
ScreenDescription description; /* screen statistics */
describe_ScreenScreen(&description);
if (validateScreenBox(box, description.cols, description.rows)) {
ScreenCharacter *character = buffer;
unsigned char *text = shmAddress + 4 + (box->top * description.cols) + box->left;
unsigned char *attributes = text + (description.cols * description.rows);
size_t increment = description.cols - box->width;
int row;
for (row=0; row<box->height; row++) {
int column;
for (column=0; column<box->width; column++) {
wint_t wc = convertCharToWchar(*text++);
if (wc == WEOF) wc = L'?';
character->text = wc;
character->attributes = *attributes++;
character++;
}
text += increment;
attributes += increment;
}
return 1;
}
return 0;
}
int
setTextTableByte (TextTableData *ttd, unsigned char byte, unsigned char dots) {
wint_t character = convertCharToWchar(byte);
if (character != WEOF)
if (!setTextTableCharacter(ttd, character, dots))
return 0;
return 1;
}
unsigned char
convertCharacterToDots (TextTable *table, wchar_t character) {
switch (character & ~UNICODE_CELL_MASK) {
case UNICODE_BRAILLE_ROW:
return character & UNICODE_CELL_MASK;
case 0XF000: {
wint_t wc = convertCharToWchar(character & UNICODE_CELL_MASK);
if (wc == WEOF) goto unknownCharacter;
character = wc;
}
default: {
{
SetBrailleRepresentationData sbr = {
.table = table,
.dots = 0
};
if (handleBestCharacter(character, setBrailleRepresentation, &sbr)) {
return sbr.dots;
}
}
unknownCharacter:
{
const unsigned char *cell;
if ((cell = getUnicodeCellEntry(table, UNICODE_REPLACEMENT_CHARACTER))) return *cell;
if ((cell = getUnicodeCellEntry(table, WC_C('?')))) return *cell;
}
return BRL_DOT1 | BRL_DOT2 | BRL_DOT3 | BRL_DOT4 | BRL_DOT5 | BRL_DOT6 | BRL_DOT7 | BRL_DOT8;
}
}
}
wchar_t
convertDotsToCharacter (TextTable *table, unsigned char dots) {
const TextTableHeader *header = table->header.fields;
if (BITMASK_TEST(header->dotsCharacterDefined, dots)) return header->dotsToCharacter[dots];
return UNICODE_REPLACEMENT_CHARACTER;
}
int
replaceTextTable (const char *directory, const char *name) {
int ok = 0;
char *path;
if ((path = makeTextTablePath(directory, name))) {
TextTable *newTable;
logMessage(LOG_DEBUG, "compiling text table: %s", path);
if ((newTable = compileTextTable(path))) {
TextTable *oldTable = textTable;
textTable = newTable;
destroyTextTable(oldTable);
ok = 1;
} else {
logMessage(LOG_ERR, "%s: %s", gettext("cannot compile text table"), path);
}
free(path);
}
if (!ok) logMessage(LOG_ERR, "%s: %s", gettext("cannot load text table"), name);
return ok;
}
unsigned char
convertCharacterToDots (TextTable *table, wchar_t character) {
switch (character & ~UNICODE_CELL_MASK) {
case UNICODE_BRAILLE_ROW:
return character & UNICODE_CELL_MASK;
case 0XF000: {
wint_t wc = convertCharToWchar(character & UNICODE_CELL_MASK);
if (wc == WEOF) break;
character = wc;
}
default: {
{
unsigned int counter = 0;
while (++counter < 0X10) {
const UnicodeRowEntry *row = getUnicodeRowEntry(table, character);
if (row) {
unsigned int cellNumber = UNICODE_CELL_NUMBER(character);
if (BITMASK_TEST(row->cellDefined, cellNumber)) {
return row->cells[cellNumber];
}
if (BITMASK_TEST(row->cellAliased, cellNumber)) {
const TextTableAliasEntry *alias = findTextTableAlias(table, character);
if (alias) {
character = alias->to;
continue;
}
}
}
break;
}
}
if (table->options.tryBaseCharacter) {
SetBrailleRepresentationData sbr = {
.table = table,
.dots = 0
};
if (handleBestCharacter(character, setBrailleRepresentation, &sbr)) {
return sbr.dots;
}
}
break;
}
}
{
const unsigned char *cell;
if ((cell = getUnicodeCellEntry(table, UNICODE_REPLACEMENT_CHARACTER))) return *cell;
if ((cell = getUnicodeCellEntry(table, WC_C('?')))) return *cell;
}
return BRL_DOT_1 | BRL_DOT_2 | BRL_DOT_3 | BRL_DOT_4 | BRL_DOT_5 | BRL_DOT_6 | BRL_DOT_7 | BRL_DOT_8;
}
