| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you 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 "DFPlatform.h" |
| #include "WordWhitespace.h" |
| #include "DFDOM.h" |
| #include "DFClassNames.h" |
| #include "DFString.h" |
| #include "DFCommon.h" |
| #include <stdlib.h> |
| |
| static void addNbsps(DFNode *node, int inParagraph, int *havePrecedingSpace) |
| { |
| switch (node->tag) { |
| case WORD_P: |
| inParagraph = 1; |
| *havePrecedingSpace = 1; |
| break; |
| case DOM_TEXT: { |
| if (node->parent->tag != WORD_T) |
| break; |
| uint32_t *chars = DFUTF8To32(node->value); |
| size_t length = DFUTF32Length(chars); |
| for (size_t i = 0; i < length; i++) { |
| if (chars[i] == ' ') { |
| if (*havePrecedingSpace) |
| chars[i] = DFNbspChar; |
| else |
| *havePrecedingSpace = 1; |
| } |
| else { |
| *havePrecedingSpace = 0; |
| } |
| } |
| char *value = DFUTF32to8(chars); |
| DFSetNodeValue(node,value); |
| free(value); |
| free(chars); |
| break; |
| } |
| } |
| |
| for (DFNode *child = node->first; child != NULL; child = child->next) |
| addNbsps(child,inParagraph,havePrecedingSpace); |
| } |
| |
| void WordAddNbsps(DFDocument *doc) |
| { |
| int havePrecedingSpace = 0; |
| addNbsps(doc->root,1,&havePrecedingSpace); |
| } |
| |
| static void removeNbsps(DFNode *node) |
| { |
| if (node->tag == DOM_TEXT) { |
| uint32_t *chars = DFUTF8To32(node->value); |
| size_t length = DFUTF32Length(chars); |
| for (size_t i = 0; i < length; i++) { |
| if (chars[i] == DFNbspChar) |
| chars[i] = ' '; |
| } |
| char *value = DFUTF32to8(chars); |
| DFSetNodeValue(node,value); |
| free(value); |
| free(chars); |
| } |
| |
| for (DFNode *child = node->first; child != NULL; child = child->next) |
| removeNbsps(child); |
| } |
| |
| void WordRemoveNbsps(DFDocument *doc) |
| { |
| removeNbsps(doc->docNode); |
| } |