bool Dict::AcceptableChoice(const WERD_CHOICE& best_choice,
XHeightConsistencyEnum xheight_consistency) {
float CertaintyThreshold = stopper_nondict_certainty_base;
int WordSize;
if (stopper_no_acceptable_choices) return false;
if (best_choice.length() == 0) return false;
bool no_dang_ambigs = !best_choice.dangerous_ambig_found();
bool is_valid_word = valid_word_permuter(best_choice.permuter(), false);
bool is_case_ok = case_ok(best_choice, getUnicharset());
if (stopper_debug_level >= 1) {
const char *xht = "UNKNOWN";
switch (xheight_consistency) {
case XH_GOOD: xht = "NORMAL"; break;
case XH_SUBNORMAL: xht = "SUBNORMAL"; break;
case XH_INCONSISTENT: xht = "INCONSISTENT"; break;
default: xht = "UNKNOWN";
}
tprintf("\nStopper: %s (word=%c, case=%c, xht_ok=%s=[%g,%g])\n",
best_choice.unichar_string().string(),
(is_valid_word ? 'y' : 'n'),
(is_case_ok ? 'y' : 'n'),
xht,
best_choice.min_x_height(),
best_choice.max_x_height());
}
// Do not accept invalid words in PASS1.
if (reject_offset_ <= 0.0f && !is_valid_word) return false;
if (is_valid_word && is_case_ok) {
WordSize = LengthOfShortestAlphaRun(best_choice);
WordSize -= stopper_smallword_size;
if (WordSize < 0)
WordSize = 0;
CertaintyThreshold += WordSize * stopper_certainty_per_char;
}
if (stopper_debug_level >= 1)
tprintf("Stopper: Rating = %4.1f, Certainty = %4.1f, Threshold = %4.1f\n",
best_choice.rating(), best_choice.certainty(), CertaintyThreshold);
if (no_dang_ambigs &&
best_choice.certainty() > CertaintyThreshold &&
xheight_consistency < XH_INCONSISTENT &&
UniformCertainties(best_choice)) {
return true;
} else {
if (stopper_debug_level >= 1) {
tprintf("AcceptableChoice() returned false"
" (no_dang_ambig:%d cert:%.4g thresh:%g uniform:%d)\n",
no_dang_ambigs, best_choice.certainty(),
CertaintyThreshold,
UniformCertainties(best_choice));
}
return false;
}
}
