1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
package org.zwobble.mammoth.internal;
import org.zwobble.mammoth.internal.conversion.DocumentToHtml;
import org.zwobble.mammoth.internal.conversion.DocumentToHtmlOptions;
import org.zwobble.mammoth.internal.documents.DocumentElement;
import org.zwobble.mammoth.internal.documents.HasChildren;
import org.zwobble.mammoth.internal.documents.Paragraph;
import org.zwobble.mammoth.internal.documents.Text;
import org.zwobble.mammoth.internal.docx.DocxFile;
import org.zwobble.mammoth.internal.docx.InMemoryDocxFile;
import org.zwobble.mammoth.internal.docx.ZippedDocxFile;
import org.zwobble.mammoth.internal.html.Html;
import org.zwobble.mammoth.internal.results.InternalResult;
import org.zwobble.mammoth.internal.util.PassThroughException;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Path;
import java.util.List;
import java.util.Optional;
import java.util.function.Function;
import static org.zwobble.mammoth.internal.docx.DocumentReader.readDocument;
import static org.zwobble.mammoth.internal.util.Casts.tryCast;
import static org.zwobble.mammoth.internal.util.Iterables.lazyMap;
import static org.zwobble.mammoth.internal.util.Lists.list;
public class InternalDocumentConverter {
private final DocumentToHtmlOptions options;
public InternalDocumentConverter(DocumentToHtmlOptions options) {
this.options = options;
}
public InternalResult<String> convertToHtml(InputStream stream) throws IOException {
return PassThroughException.unwrap(() ->
withDocxFile(stream, zipFile ->
convertToHtml(Optional.empty(), zipFile)));
}
public InternalResult<String> convertToHtml(File file) throws IOException {
return PassThroughException.unwrap(() ->
withDocxFile(file, zipFile ->
convertToHtml(Optional.of(file.toPath()), zipFile)));
}
private InternalResult<String> convertToHtml(Optional<Path> path, DocxFile zipFile) {
return readDocument(path, zipFile)
.flatMap(nodes -> DocumentToHtml.convertToHtml(nodes, options))
.map(Html::stripEmpty)
.map(Html::collapse)
.map(Html::write);
}
public InternalResult<String> extractRawText(InputStream stream) throws IOException {
return PassThroughException.unwrap(() ->
withDocxFile(stream, zipFile ->
extractRawText(Optional.empty(), zipFile)));
}
public InternalResult<String> extractRawText(File file) throws IOException {
return PassThroughException.unwrap(() ->
withDocxFile(file, zipFile ->
extractRawText(Optional.of(file.toPath()), zipFile)));
}
private InternalResult<String> extractRawText(Optional<Path> path, DocxFile zipFile) {
return readDocument(path, zipFile)
.map(InternalDocumentConverter::extractRawTextOfChildren);
}
private static <T> T withDocxFile(File file, Function<DocxFile, T> function) throws IOException {
try (DocxFile zipFile = new ZippedDocxFile(file)) {
return function.apply(zipFile);
}
}
private static <T> T withDocxFile(InputStream stream, Function<DocxFile, T> function) throws IOException {
try (DocxFile zipFile = InMemoryDocxFile.fromStream(stream)) {
return function.apply(zipFile);
}
}
private static String extractRawTextOfChildren(HasChildren parent) {
return extractRawText(parent.getChildren());
}
private static String extractRawText(List<DocumentElement> nodes) {
return String.join("", lazyMap(nodes, node -> extractRawText(node)));
}
private static String extractRawText(DocumentElement node) {
return tryCast(Text.class, node)
.map(Text::getValue)
.orElseGet(() -> {
List<DocumentElement> children = tryCast(HasChildren.class, node)
.map(HasChildren::getChildren)
.orElse(list());
String suffix = tryCast(Paragraph.class, node).map(paragraph -> "\n\n").orElse("");
return extractRawText(children) + suffix;
});
}
}
|
