// Make a text string from the internal data structures.
// The input page_res is deleted.
char* TessBaseAPI::TesseractToText(PAGE_RES* page_res) {
if (page_res != NULL) {
int total_length = TextLength(page_res);
PAGE_RES_IT page_res_it(page_res);
char* result = new char[total_length];
char* ptr = result;
for (page_res_it.restart_page(); page_res_it.word () != NULL;
page_res_it.forward()) {
WERD_RES *word = page_res_it.word();
WERD_CHOICE* choice = word->best_choice;
if (choice != NULL) {
strcpy(ptr, choice->string().string());
ptr += strlen(ptr);
if (word->word->flag(W_EOL))
*ptr++ = '\n';
else
*ptr++ = ' ';
}
}
*ptr++ = '\n';
*ptr = '\0';
delete page_res;
return result;
}
return NULL;
}
// Return the maximum length that the output text string might occupy.
int TessBaseAPI::TextLength(PAGE_RES* page_res) {
PAGE_RES_IT page_res_it(page_res);
int total_length = 2;
// Iterate over the data structures to extract the recognition result.
for (page_res_it.restart_page(); page_res_it.word () != NULL;
page_res_it.forward()) {
WERD_RES *word = page_res_it.word();
WERD_CHOICE* choice = word->best_choice;
if (choice != NULL) {
total_length += choice->string().length() + 1;
for (int i = 0; i < word->reject_map.length(); ++i) {
if (word->reject_map[i].rejected())
++total_length;
}
}
}
return total_length;
}
