1 files changed, 68 insertions, 0 deletions
diff --git a/tesseract/src/ccmain/werdit.cpp b/tesseract/src/ccmain/werdit.cpp
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+++ b/tesseract/src/ccmain/werdit.cpp
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+/**********************************************************************
+ * File:        werdit.cpp  (Formerly wordit.c)
+ * Description: An iterator for passing over all the words in a document.
+ * Author:      Ray Smith
+ * Created:     Mon Apr 27 08:51:22 BST 1992
+ *
+ * (C) Copyright 1992, Hewlett-Packard Ltd.
+ ** Licensed under the Apache License, Version 2.0 (the "License");
+ ** you may not use this file except in compliance with the License.
+ ** You may obtain a copy of the License at
+ ** http://www.apache.org/licenses/LICENSE-2.0
+ ** Unless required by applicable law or agreed to in writing, software
+ ** distributed under the License is distributed on an "AS IS" BASIS,
+ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ** See the License for the specific language governing permissions and
+ ** limitations under the License.
+ *
+ **********************************************************************/
+
+#include "werdit.h"
+
+#include "errcode.h"   // for ASSERT_HOST
+#include "pageres.h"   // for PAGE_RES_IT, PAGE_RES (ptr only), WERD_RES
+#include "stepblob.h"  // for C_BLOB_IT, C_BLOB, C_BLOB_LIST
+#include "werd.h"      // for WERD
+
+namespace tesseract {
+
+/**********************************************************************
+ * make_pseudo_word
+ *
+ * Make all the blobs inside a selection into a single word.
+ * The returned PAGE_RES_IT* it points to the new word. After use, call
+ * it->DeleteCurrentWord() to delete the fake word, and then
+ * delete it to get rid of the iterator itself.
+ **********************************************************************/
+
+PAGE_RES_IT* make_pseudo_word(PAGE_RES* page_res, const TBOX& selection_box) {
+  PAGE_RES_IT pr_it(page_res);
+  C_BLOB_LIST new_blobs;               // list of gathered blobs
+  C_BLOB_IT new_blob_it = &new_blobs;  // iterator
+
+  for (WERD_RES* word_res = pr_it.word(); word_res != nullptr;
+       word_res = pr_it.forward()) {
+    WERD* word = word_res->word;
+    if (word->bounding_box().overlap(selection_box)) {
+      C_BLOB_IT blob_it(word->cblob_list());
+      for (blob_it.mark_cycle_pt();
+           !blob_it.cycled_list(); blob_it.forward()) {
+        C_BLOB* blob = blob_it.data();
+        if (blob->bounding_box().overlap(selection_box)) {
+          new_blob_it.add_after_then_move(C_BLOB::deep_copy(blob));
+        }
+      }
+      if (!new_blobs.empty()) {
+        WERD* pseudo_word = new WERD(&new_blobs, 1, nullptr);
+        word_res = pr_it.InsertSimpleCloneWord(*word_res, pseudo_word);
+        auto* it = new PAGE_RES_IT(page_res);
+        while (it->word() != word_res && it->word() != nullptr) it->forward();
+        ASSERT_HOST(it->word() == word_res);
+        return it;
+      }
+    }
+  }
+  return nullptr;
+}
+
+} // namespace tesseract