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优化

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pull/1434/head
gedoor 3 years ago
parent e2d187f38a
commit 493524b402
2 changed files with 225 additions and 226 deletions
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  1. 27
      app/src/main/java/io/legado/app/model/localBook/EpubFile.kt
  2. 424
      epublib/src/main/java/me/ag2s/epublib/domain/TableOfContents.java

27
app/src/main/java/io/legado/app/model/localBook/EpubFile.kt
Unescape View File

@ -119,23 +119,18 @@ class EpubFile(var book: Book) {
private fun getContent(chapter: BookChapter): String? {
/*获取当前章节文本*/
return getChildChapter(chapter, chapter.url)
}
private fun getChildChapter(chapter: BookChapter, href: String): String? {
epubBook?.let {
val body = Jsoup.parse(String(it.resources.getByHref(href).data, mCharset)).body()
if (chapter.url == href) {
val startFragmentId = chapter.startFragmentId
val endFragmentId = chapter.endFragmentId
/*一些书籍依靠href索引的resource会包含多个章节，需要依靠fragmentId来截取到当前章节的内容*/
/*注:这里较大增加了内容加载的时间，所以首次获取内容后可存储到本地cache，减少重复加载*/
if (!startFragmentId.isNullOrBlank())
body.getElementById(startFragmentId)?.previousElementSiblings()?.remove()
if (!endFragmentId.isNullOrBlank() && endFragmentId != startFragmentId)
body.getElementById(endFragmentId)?.nextElementSiblings()?.remove()
}
val body =
Jsoup.parse(String(it.resources.getByHref(chapter.url).data, mCharset)).body()
val startFragmentId = chapter.startFragmentId
val endFragmentId = chapter.endFragmentId
/*一些书籍依靠href索引的resource会包含多个章节，需要依靠fragmentId来截取到当前章节的内容*/
/*注:这里较大增加了内容加载的时间，所以首次获取内容后可存储到本地cache，减少重复加载*/
if (!startFragmentId.isNullOrBlank())
body.getElementById(startFragmentId)?.previousElementSiblings()?.remove()
if (!endFragmentId.isNullOrBlank() && endFragmentId != startFragmentId)
body.getElementById(endFragmentId)?.nextElementSiblings()?.remove()
/*选择去除正文中的H标签，部分书籍标题与阅读标题重复待优化*/
var tag = Book.hTag

424
epublib/src/main/java/me/ag2s/epublib/domain/TableOfContents.java
Unescape View File

@ -10,251 +10,255 @@ import java.util.Set;
/**
* The table of contents of the book.
* The TableOfContents is a tree structure at the root it is a list of TOCReferences, each if which may have as children another list of TOCReferences.
*
* <p>
* The table of contents is used by epub as a quick index to chapters and sections within chapters.
* It may contain duplicate entries, may decide to point not to certain chapters, etc.
*
* <p>
* See the spine for the complete list of sections in the order in which they should be read.
*
* @see Spine
*
* @author paul
* @see Spine
*/
public class TableOfContents implements Serializable {
private static final long serialVersionUID = -3147391239966275152L;
private static final long serialVersionUID = -3147391239966275152L;
public static final String DEFAULT_PATH_SEPARATOR = "/";
public static final String DEFAULT_PATH_SEPARATOR = "/";
private List<TOCReference> tocReferences;
private List<TOCReference> tocReferences;
public TableOfContents() {
this(new ArrayList<>());
}
public TableOfContents(List<TOCReference> tocReferences) {
this.tocReferences = tocReferences;
}
public List<TOCReference> getTocReferences() {
return tocReferences;
}
public void setTocReferences(List<TOCReference> tocReferences) {
this.tocReferences = tocReferences;
}
public TableOfContents() {
this(new ArrayList<>());
}
/**
* Calls addTOCReferenceAtLocation after splitting the path using the DEFAULT_PATH_SEPARATOR.
* @return the new TOCReference
*/
@SuppressWarnings("unused")
public TOCReference addSection(Resource resource, String path) {
return addSection(resource, path, DEFAULT_PATH_SEPARATOR);
}
public TableOfContents(List<TOCReference> tocReferences) {
this.tocReferences = tocReferences;
}
/**
* Calls addTOCReferenceAtLocation after splitting the path using the given pathSeparator.
*
* @param resource resource
* @param path path
* @param pathSeparator pathSeparator
* @return the new TOCReference
*/
public TOCReference addSection(Resource resource, String path,
String pathSeparator) {
String[] pathElements = path.split(pathSeparator);
return addSection(resource, pathElements);
}
public List<TOCReference> getTocReferences() {
return tocReferences;
}
/**
* Finds the first TOCReference in the given list that has the same title as the given Title.
*
* @param title title
* @param tocReferences tocReferences
* @return null if not found.
*/
private static TOCReference findTocReferenceByTitle(String title,
List<TOCReference> tocReferences) {
for (TOCReference tocReference : tocReferences) {
if (title.equals(tocReference.getTitle())) {
return tocReference;
}
public void setTocReferences(List<TOCReference> tocReferences) {
this.tocReferences = tocReferences;
}
return null;
}
/**
* Adds the given Resources to the TableOfContents at the location specified by the pathElements.
*
* Example:
* Calling this method with a Resource and new String[] {"chapter1", "paragraph1"} will result in the following:
* <ul>
* <li>a TOCReference with the title "chapter1" at the root level.<br/>
* If this TOCReference did not yet exist it will have been created and does not point to any resource</li>
* <li>A TOCReference that has the title "paragraph1". This TOCReference will be the child of TOCReference "chapter1" and
* will point to the given Resource</li>
* </ul>
*
* @param resource resource
* @param pathElements pathElements
* @return the new TOCReference
*/
public TOCReference addSection(Resource resource, String[] pathElements) {
if (pathElements == null || pathElements.length == 0) {
return null;
/**
* Calls addTOCReferenceAtLocation after splitting the path using the DEFAULT_PATH_SEPARATOR.
*
* @return the new TOCReference
*/
@SuppressWarnings("unused")
public TOCReference addSection(Resource resource, String path) {
return addSection(resource, path, DEFAULT_PATH_SEPARATOR);
}
TOCReference result = null;
List<TOCReference> currentTocReferences = this.tocReferences;
for (String currentTitle : pathElements) {
result = findTocReferenceByTitle(currentTitle, currentTocReferences);
if (result == null) {
result = new TOCReference(currentTitle, null);
currentTocReferences.add(result);
}
currentTocReferences = result.getChildren();
/**
* Calls addTOCReferenceAtLocation after splitting the path using the given pathSeparator.
*
* @param resource resource
* @param path path
* @param pathSeparator pathSeparator
* @return the new TOCReference
*/
public TOCReference addSection(Resource resource, String path,
String pathSeparator) {
String[] pathElements = path.split(pathSeparator);
return addSection(resource, pathElements);
}
result.setResource(resource);
return result;
}
/**
* Adds the given Resources to the TableOfContents at the location specified by the pathElements.
*
* Example:
* Calling this method with a Resource and new int[] {0, 0} will result in the following:
* <ul>
* <li>a TOCReference at the root level.<br/>
* If this TOCReference did not yet exist it will have been created with a title of "" and does not point to any resource</li>
* <li>A TOCReference that points to the given resource and is a child of the previously created TOCReference.<br/>
* If this TOCReference didn't exist yet it will be created and have a title of ""</li>
* </ul>
*
* @param resource resource
* @param pathElements pathElements
* @return the new TOCReference
*/
@SuppressWarnings("unused")
public TOCReference addSection(Resource resource, int[] pathElements,
String sectionTitlePrefix, String sectionNumberSeparator) {
if (pathElements == null || pathElements.length == 0) {
return null;
/**
* Finds the first TOCReference in the given list that has the same title as the given Title.
*
* @param title title
* @param tocReferences tocReferences
* @return null if not found.
*/
private static TOCReference findTocReferenceByTitle(String title,
List<TOCReference> tocReferences) {
for (TOCReference tocReference : tocReferences) {
if (title.equals(tocReference.getTitle())) {
return tocReference;
}
}
return null;
}
TOCReference result = null;
List<TOCReference> currentTocReferences = this.tocReferences;
for (int i = 0; i < pathElements.length; i++) {
int currentIndex = pathElements[i];
if (currentIndex > 0 && currentIndex < (currentTocReferences.size()
- 1)) {
result = currentTocReferences.get(currentIndex);
} else {
result = null;
}
if (result == null) {
paddTOCReferences(currentTocReferences, pathElements, i,
sectionTitlePrefix, sectionNumberSeparator);
result = currentTocReferences.get(currentIndex);
}
currentTocReferences = result.getChildren();
/**
* Adds the given Resources to the TableOfContents at the location specified by the pathElements.
* <p>
* Example:
* Calling this method with a Resource and new String[] {"chapter1", "paragraph1"} will result in the following:
* <ul>
* <li>a TOCReference with the title "chapter1" at the root level.<br/>
* If this TOCReference did not yet exist it will have been created and does not point to any resource</li>
* <li>A TOCReference that has the title "paragraph1". This TOCReference will be the child of TOCReference "chapter1" and
* will point to the given Resource</li>
* </ul>
*
* @param resource resource
* @param pathElements pathElements
* @return the new TOCReference
*/
public TOCReference addSection(Resource resource, String[] pathElements) {
if (pathElements == null || pathElements.length == 0) {
return null;
}
TOCReference result = null;
List<TOCReference> currentTocReferences = this.tocReferences;
for (String currentTitle : pathElements) {
result = findTocReferenceByTitle(currentTitle, currentTocReferences);
if (result == null) {
result = new TOCReference(currentTitle, null);
currentTocReferences.add(result);
}
currentTocReferences = result.getChildren();
}
result.setResource(resource);
return result;
}
result.setResource(resource);
return result;
}
private void paddTOCReferences(List<TOCReference> currentTocReferences,
int[] pathElements, int pathPos, String sectionPrefix,
String sectionNumberSeparator) {
for (int i = currentTocReferences.size(); i <= pathElements[pathPos]; i++) {
String sectionTitle = createSectionTitle(pathElements, pathPos, i,
sectionPrefix,
sectionNumberSeparator);
currentTocReferences.add(new TOCReference(sectionTitle, null));
/**
* Adds the given Resources to the TableOfContents at the location specified by the pathElements.
* <p>
* Example:
* Calling this method with a Resource and new int[] {0, 0} will result in the following:
* <ul>
* <li>a TOCReference at the root level.<br/>
* If this TOCReference did not yet exist it will have been created with a title of "" and does not point to any resource</li>
* <li>A TOCReference that points to the given resource and is a child of the previously created TOCReference.<br/>
* If this TOCReference didn't exist yet it will be created and have a title of ""</li>
* </ul>
*
* @param resource resource
* @param pathElements pathElements
* @return the new TOCReference
*/
@SuppressWarnings("unused")
public TOCReference addSection(Resource resource, int[] pathElements,
String sectionTitlePrefix, String sectionNumberSeparator) {
if (pathElements == null || pathElements.length == 0) {
return null;
}
TOCReference result = null;
List<TOCReference> currentTocReferences = this.tocReferences;
for (int i = 0; i < pathElements.length; i++) {
int currentIndex = pathElements[i];
if (currentIndex > 0 && currentIndex < (currentTocReferences.size()
- 1)) {
result = currentTocReferences.get(currentIndex);
} else {
result = null;
}
if (result == null) {
paddTOCReferences(currentTocReferences, pathElements, i,
sectionTitlePrefix, sectionNumberSeparator);
result = currentTocReferences.get(currentIndex);
}
currentTocReferences = result.getChildren();
}
result.setResource(resource);
return result;
}
}
private String createSectionTitle(int[] pathElements, int pathPos,
int lastPos,
String sectionPrefix, String sectionNumberSeparator) {
StringBuilder title = new StringBuilder(sectionPrefix);
for (int i = 0; i < pathPos; i++) {
if (i > 0) {
title.append(sectionNumberSeparator);
}
title.append(pathElements[i] + 1);
private void paddTOCReferences(List<TOCReference> currentTocReferences,
int[] pathElements, int pathPos, String sectionPrefix,
String sectionNumberSeparator) {
for (int i = currentTocReferences.size(); i <= pathElements[pathPos]; i++) {
String sectionTitle = createSectionTitle(pathElements, pathPos, i,
sectionPrefix,
sectionNumberSeparator);
currentTocReferences.add(new TOCReference(sectionTitle, null));
}
}
if (pathPos > 0) {
title.append(sectionNumberSeparator);
private String createSectionTitle(int[] pathElements, int pathPos,
int lastPos,
String sectionPrefix, String sectionNumberSeparator) {
StringBuilder title = new StringBuilder(sectionPrefix);
for (int i = 0; i < pathPos; i++) {
if (i > 0) {
title.append(sectionNumberSeparator);
}
title.append(pathElements[i] + 1);
}
if (pathPos > 0) {
title.append(sectionNumberSeparator);
}
title.append(lastPos + 1);
return title.toString();
}
title.append(lastPos + 1);
return title.toString();
}
public TOCReference addTOCReference(TOCReference tocReference) {
if (tocReferences == null) {
tocReferences = new ArrayList<>();
public TOCReference addTOCReference(TOCReference tocReference) {
if (tocReferences == null) {
tocReferences = new ArrayList<>();
}
tocReferences.add(tocReference);
return tocReference;
}
tocReferences.add(tocReference);
return tocReference;
}
/**
* All unique references (unique by href) in the order in which they are referenced to in the table of contents.
*
* @return All unique references (unique by href) in the order in which they are referenced to in the table of contents.
*/
public List<Resource> getAllUniqueResources() {
Set<String> uniqueHrefs = new HashSet<>();
List<Resource> result = new ArrayList<>();
getAllUniqueResources(uniqueHrefs, result, tocReferences);
return result;
}
/**
* All unique references (unique by href) in the order in which they are referenced to in the table of contents.
*
* @return All unique references (unique by href) in the order in which they are referenced to in the table of contents.
*/
public List<Resource> getAllUniqueResources() {
Set<String> uniqueHrefs = new HashSet<>();
List<Resource> result = new ArrayList<>();
getAllUniqueResources(uniqueHrefs, result, tocReferences);
return result;
}
private static void getAllUniqueResources(Set<String> uniqueHrefs,
List<Resource> result, List<TOCReference> tocReferences) {
for (TOCReference tocReference : tocReferences) {
Resource resource = tocReference.getResource();
if (resource != null && !uniqueHrefs.contains(resource.getHref())) {
uniqueHrefs.add(resource.getHref());
result.add(resource);
}
getAllUniqueResources(uniqueHrefs, result, tocReference.getChildren());
private static void getAllUniqueResources(
Set<String> uniqueHrefs,
List<Resource> result,
List<TOCReference> tocReferences
) {
for (TOCReference tocReference : tocReferences) {
Resource resource = tocReference.getResource();
if (resource != null && !uniqueHrefs.contains(resource.getHref())) {
uniqueHrefs.add(resource.getHref());
result.add(resource);
}
getAllUniqueResources(uniqueHrefs, result, tocReference.getChildren());
}
}
}
/**
* The total number of references in this table of contents.
*
* @return The total number of references in this table of contents.
*/
public int size() {
return getTotalSize(tocReferences);
}
/**
* The total number of references in this table of contents.
*
* @return The total number of references in this table of contents.
*/
public int size() {
return getTotalSize(tocReferences);
}
private static int getTotalSize(Collection<TOCReference> tocReferences) {
int result = tocReferences.size();
for (TOCReference tocReference : tocReferences) {
result += getTotalSize(tocReference.getChildren());
private static int getTotalSize(Collection<TOCReference> tocReferences) {
int result = tocReferences.size();
for (TOCReference tocReference : tocReferences) {
result += getTotalSize(tocReference.getChildren());
}
return result;
}
return result;
}
/**
* The maximum depth of the reference tree
* @return The maximum depth of the reference tree
*/
public int calculateDepth() {
return calculateDepth(tocReferences, 0);
}
/**
* The maximum depth of the reference tree
*
* @return The maximum depth of the reference tree
*/
public int calculateDepth() {
return calculateDepth(tocReferences, 0);
}
private int calculateDepth(List<TOCReference> tocReferences,
int currentDepth) {
int maxChildDepth = 0;
for (TOCReference tocReference : tocReferences) {
int childDepth = calculateDepth(tocReference.getChildren(), 1);
if (childDepth > maxChildDepth) {
maxChildDepth = childDepth;
}
private int calculateDepth(List<TOCReference> tocReferences,
int currentDepth) {
int maxChildDepth = 0;
for (TOCReference tocReference : tocReferences) {
int childDepth = calculateDepth(tocReference.getChildren(), 1);
if (childDepth > maxChildDepth) {
maxChildDepth = childDepth;
}
}
return currentDepth + maxChildDepth;
}
return currentDepth + maxChildDepth;
}
}

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