static int
cpbEndOperation (const wchar_t *characters, size_t length) {
cpbTruncateContent(beginOffset);
if (!cpbAddContent(characters, length)) return 0;
playTune(&tune_clipboard_end);
return 1;
}
int
cpbRestore (void) {
int ok = 0;
FILE *stream = cpbOpenFile("r");
if (stream) {
size_t size = 0X1000;
char buffer[size];
size_t length = 0;
cpbClearContent();
ok = 1;
do {
size_t count = fread(&buffer[length], 1, (size - length), stream);
int done = (length += count) < size;
if (ferror(stream)) {
logSystemError("fread");
ok = 0;
} else {
const char *next = buffer;
size_t left = length;
while (left > 0) {
const char *start = next;
wint_t wi = convertUtf8ToWchar(&next, &left);
if (wi == WEOF) {
length = next - start;
if (left > 0) {
logBytes(LOG_ERR, "invalid UTF-8 character", start, length);
ok = 0;
break;
}
memmove(buffer, start, length);
} else {
wchar_t wc = wi;
if (!cpbAddContent(&wc, 1)) {
ok = 0;
break;
}
}
}
}
if (done) break;
} while (ok);
if (fclose(stream) == EOF) {
logSystemError("fclose");
ok = 0;
}
}
return ok;
}
int
cpbSetContent (const wchar_t *characters, size_t length) {
cpbClearContent();
return cpbAddContent(characters, length);
}
