Tesseract 3.02

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wordlist2dawg.cpp File Reference
`#include <stdio.h>`
`#include "classify.h"`
`#include "dawg.h"`
`#include "dict.h"`
`#include "emalloc.h"`
`#include "freelist.h"`
`#include "helpers.h"`
`#include "serialis.h"`
`#include "trie.h"`
`#include "unicharset.h"`

Go to the source code of this file.

## Functions

int | main (int argc, char **argv)

## Function Documentation

int main | ( | int | argc,
|  | char ** | argv
| ) |  |

Public Function Prototypes —————————————————————————-

Definition at line 37 of file wordlist2dawg.cpp.

{
int min_word_length;
int max_word_length;
if (!(argc == 4 || (argc == 5 && strcmp(argv[1], "-t") == 0) ||
(argc == 6 && strcmp(argv[1], "-r") == 0) ||
(argc == 7 && strcmp(argv[1], "-l") == 0 &&
sscanf(argv[2], "%d", &min_word_length) == 1 &&
sscanf(argv[3], "%d", &max_word_length) == 1))) {
printf("Usage: %s [-t | -r [reverse policy] |"
" -l min_len max_len] word_list_file"
" dawg_file unicharset_file\n", argv[0]);
return 1;
}
tesseract::Classify *classify = new tesseract::Classify();
int argv_index = 0;
if (argc == 5) ++argv_index;
tesseract::Trie::RTLReversePolicy reverse_policy =
tesseract::Trie::RRP_DO_NO_REVERSE;
if (argc == 6) {
++argv_index;
int tmp_int;
sscanf(argv[++argv_index], "%d", &tmp_int);
reverse_policy = static_cast<tesseract::Trie::RTLReversePolicy>(tmp_int);
tprintf("Set reverse_policy to %s\n",
tesseract::Trie::get_reverse_policy_name(reverse_policy));
}
if (argc == 7) argv_index += 3;
const char* wordlist_filename = argv[++argv_index];
const char* dawg_filename = argv[++argv_index];
const char* unicharset_file = argv[++argv_index];
tprintf("Loading unicharset from '%s'\n", unicharset_file);
if (!classify->getDict().getUnicharset().load_from_file(unicharset_file)) {
tprintf("Failed to load unicharset from '%s'\n", unicharset_file);
delete classify;
return 1;
}
const UNICHARSET &unicharset = classify->getDict().getUnicharset();
if (argc == 4 || argc == 6) {
tesseract::Trie trie(
// the first 3 arguments are not used in this case
tesseract::DAWG_TYPE_WORD, "", SYSTEM_DAWG_PERM,
kMaxNumEdges, unicharset.size(),
classify->getDict().dawg_debug_level);
tprintf("Reading word list from '%s'\n", wordlist_filename);
if (!trie.read_word_list(wordlist_filename, unicharset, reverse_policy)) {
tprintf("Failed to read word list from '%s'\n", wordlist_filename);
exit(1);
}
tprintf("Reducing Trie to SquishedDawg\n");
tesseract::SquishedDawg *dawg = trie.trie_to_dawg();
if (dawg != NULL && dawg->NumEdges() > 0) {
tprintf("Writing squished DAWG to '%s'\n", dawg_filename);
dawg->write_squished_dawg(dawg_filename);
} else {
tprintf("Dawg is empty, skip producing the output file\n");
}
delete dawg;
} else if (argc == 5) {
tprintf("Loading dawg DAWG from '%s'\n", dawg_filename);
tesseract::SquishedDawg words(
dawg_filename,
// these 3 arguments are not used in this case
tesseract::DAWG_TYPE_WORD, "", SYSTEM_DAWG_PERM,
classify->getDict().dawg_debug_level);
tprintf("Checking word list from '%s'\n", wordlist_filename);
words.check_for_words(wordlist_filename, unicharset, true);
} else if (argc == 7) {
// Place words of different lengths in separate Dawgs.
char str[CHARS_PER_LINE];
FILE *word_file = fopen(wordlist_filename, "rb");
if (word_file == NULL) {
tprintf("Failed to open wordlist file %s\n", wordlist_filename);
exit(1);
}
FILE *dawg_file = fopen(dawg_filename, "wb");
if (dawg_file == NULL) {
tprintf("Failed to open dawg output file %s\n", dawg_filename);
exit(1);
}
tprintf("Reading word list from '%s'\n", wordlist_filename);
GenericVector<tesseract::Trie *> trie_vec;
int i;
for (i = min_word_length; i <= max_word_length; ++i) {
trie_vec.push_back(new tesseract::Trie(
// the first 3 arguments are not used in this case
tesseract::DAWG_TYPE_WORD, "", SYSTEM_DAWG_PERM,
kMaxNumEdges, unicharset.size(),
classify->getDict().dawg_debug_level));
}
while (fgets(str, CHARS_PER_LINE, word_file) != NULL) {
chomp_string(str); // remove newline
int badpos;
if (!unicharset.encodable_string(str, &badpos)) {
tprintf("String '%s' not compatible with unicharset. "
"Bad chars here: '%s'\n", str, str + badpos);
continue;
}
WERD_CHOICE word(str, unicharset);
if ((reverse_policy == tesseract::Trie::RRP_REVERSE_IF_HAS_RTL &&
word.has_rtl_unichar_id()) ||
reverse_policy == tesseract::Trie::RRP_FORCE_REVERSE) {
word.reverse_and_mirror_unichar_ids();
}
if (word.length() >= min_word_length &&
word.length() <= max_word_length &&
!word.contains_unichar_id(INVALID_UNICHAR_ID)) {
tesseract::Trie *curr_trie = trie_vec[word.length()-min_word_length];
if (!curr_trie->word_in_dawg(word)) {
if (!curr_trie->add_word_to_dawg(word)) {
tprintf("Failed to add the following word to dawg:\n");
word.print();
exit(1);
}
if (classify->getDict().dawg_debug_level > 1) {
tprintf("Added word %s of length %d\n", str, word.length());
}
if (!curr_trie->word_in_dawg(word)) {
tprintf("Error: word '%s' not in DAWG after adding it\n", str);
exit(1);
}
}
}
}
fclose(word_file);
tprintf("Writing fixed length dawgs to '%s'\n", dawg_filename);
GenericVector<tesseract::SquishedDawg *> dawg_vec;
for (i = 0; i <= max_word_length; ++i) {
dawg_vec.push_back(i < min_word_length ? NULL :
trie_vec[i-min_word_length]->trie_to_dawg());
}
tesseract::Dict::WriteFixedLengthDawgs(
dawg_vec, max_word_length - min_word_length + 1,
classify->getDict().dawg_debug_level, dawg_file);
fclose(dawg_file);
dawg_vec.delete_data_pointers();
trie_vec.delete_data_pointers();
} else { // should never get here
tprintf("Invalid command-line options\n");
exit(1);
}
delete classify;
return 0;
}