-
Notifications
You must be signed in to change notification settings - Fork 541
/
Copy pathHtmlLoader.cs
253 lines (228 loc) · 7.22 KB
/
HtmlLoader.cs
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
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Xml;
using System.Xml.Linq;
using Sgml;
namespace Xamarin.Android.Tools.JavaDocToMdoc
{
class HtmlLoader
{
// okay, SgmlReader itself has something similar, but I need something that makes sure to resolve only embedded resources.
class EmbeddedResourceEntityResolver : Sgml.IEntityResolver
{
public IEntityContent GetContent (Uri uri)
{
return new EmbeddedResourceEntityContent (uri.LocalPath);
}
class EmbeddedResourceEntityContent : Sgml.IEntityContent
{
public EmbeddedResourceEntityContent (string name)
{
if (name == null)
throw new ArgumentNullException (nameof (name));
this.name = name;
}
string name;
public Encoding Encoding {
get { return Encoding.UTF8; }
}
public string MimeType {
get { return "text/plain"; }
}
public Uri Redirect {
get { return new Uri (this.name, UriKind.Relative); }
}
public Stream Open ()
{
return typeof (HtmlLoader).Assembly.GetManifestResourceStream (name);
}
}
}
enum JavaDocKind
{
DroidDoc,
DroidDoc2,
Java6,
Java7,
Java8
}
Sgml.SgmlDtd HtmlDtd;
public HtmlLoader (ProcessingContext options)
{
HtmlDtd = Sgml.SgmlDtd.Parse (new Uri ("urn:anything"),
"HTML",
"-//W3C//DTD HTML 4.01//EN",
"strict.dtd",
string.Empty, new NameTable (), new EmbeddedResourceEntityResolver ());
SourceDocumentationRoot = options.SourceDocumentationRoot;
}
public string SourceDocumentationRoot { get; private set; }
JavaDocDocumentElement GetJavaDocDocumentElement (JavaDocKind kind, XElement jd)
{
if (jd == null)
return null;
switch (kind) {
case JavaDocKind.DroidDoc:
return new DroidDocDocumentElement (new DroidDocMdocHelper (), jd);
case JavaDocKind.DroidDoc2:
return new DroidDoc2DocumentElement (new DroidDocMdocHelper (), jd);
case JavaDocKind.Java6:
return new JavaDoc6DocumentElement (new JavaDocMdocHelper (), jd);
case JavaDocKind.Java7:
return new JavaDoc7DocumentElement (new JavaDocMdocHelper (), jd);
case JavaDocKind.Java8:
return new JavaDoc8DocumentElement (new JavaDocMdocHelper (), jd);
}
throw new InvalidOperationException ();
}
internal JavaDocDocumentElement GetJavaDocDocumentElement (string name)
{
JavaDocKind kind;
var path = GetJavaDocPath (name);
if (path == null)
return null;
var el = GetJavaDocFile (path, out kind);
return GetJavaDocDocumentElement (kind, el);
}
public XElement GetJavaDocFile (string path)
{
JavaDocKind kind;
return GetJavaDocFile (path, out kind);
}
XElement GetJavaDocFile (string path, out JavaDocKind kind)
{
kind = JavaDocKind.DroidDoc;
string rawHTML = ReadHtmlFile (path);
if (rawHTML.Substring (0, Math.Min (rawHTML.Length, 5000)).IndexOf ("<body class=\"gc-documentation develop reference api ", StringComparison.Ordinal) > 0)
kind = JavaDocKind.DroidDoc2;
if (rawHTML.Substring (0, Math.Min (rawHTML.Length, 500)).IndexOf ("Generated by javadoc (build 1.6", StringComparison.Ordinal) > 0)
kind = JavaDocKind.Java6;
if (rawHTML.Substring (0, Math.Min (rawHTML.Length, 500)).IndexOf ("Generated by javadoc (version 1.7", StringComparison.Ordinal) > 0)
kind = JavaDocKind.Java7;
if (rawHTML.Substring (0, Math.Min (rawHTML.Length, 500)).IndexOf ("Generated by javadoc (1.8", StringComparison.Ordinal) > 0)
kind = JavaDocKind.Java8;
if (kind == JavaDocKind.DroidDoc) {
throw new NotSupportedException ("Old DroidDoc is not supported anymore.");
} else {
var html = new Sgml.SgmlReader () {
InputStream = new StringReader (rawHTML),
CaseFolding = Sgml.CaseFolding.ToLower,
Dtd = HtmlDtd
};
var doc = XDocument.Load (html);
return doc.Root;
}
}
string ReadHtmlFile (string path)
{
var info = new FileInfo (path);
var contents = new StringBuilder (checked((int)info.Length));
bool veryFirstChar = true;
int wasPI = 0;
using (var r = info.OpenText ()) {
int ch;
while ((ch = r.Read ()) >= 0) {
// Some of the HTML files are invalid, containing constructs such as
// 'foo <0', which should be 'foo <0'...
//
// There are also <?> which needs to be replaced by <?>, but this involves 3 chars so I replace it later.
int next;
if (wasPI == 2) {
wasPI = 0;
contents.Append (">");
} else if (wasPI == 1) {
if (r.Peek () == '>')
wasPI = 2;
else
wasPI = 0;
contents.Append ('?');
} else if (ch == '<' && (next = r.Peek ()) >= 0 &&
(char.IsDigit ((char)next) || ((char)next) == '=' || ((char)next) == '.' || (char)next == '-' || (char)next == '?' && !veryFirstChar)) {
contents.Append ("<");
if (next == '?')
wasPI = 1;
} else if (ch == '&') {
var b = new List<char> ();
while ((ch = r.Read ()) >= 0 && ((char)ch) != ';')
b.Add ((char)ch);
var entity = new string (b.ToArray ());
switch (entity) {
case "#124":
contents.Append ("|");
break;
case "#160":
case "#xA0":
case "nbsp":
contents.Append ("\u00A0");
break;
case "8211":
contents.Append ("\u2011");
break;
default:
contents.Append ("&").Append (entity).Append (";");
break;
}
} else if (ch == '\0')
contents.Append ("NUL");
else
contents.Append ((char)ch);
if (veryFirstChar)
veryFirstChar = false;
}
}
var firstPass = contents.ToString ();
contents.Clear ();
int open_count = 0;
bool in_quot = false, in_apos = false;
foreach (char ch in firstPass) {
if (ch == '"' && open_count > 0) {
if (in_quot)
open_count = 1; // reset. Something like <... ...="...<..." (without '>') happened
in_quot = !in_quot;
}
if (ch == '\'' && open_count > 0) {
if (in_quot)
open_count = 1; // reset. Something like <... ...='...<...' (without '>') happened
in_apos = !in_apos;
}
if (ch == '<') {
if (open_count > 0)
contents.Append ("<");
else
contents.Append ((char)ch);
open_count++;
} else if (ch == '>') {
if (open_count > 0)
open_count--;
if (open_count > 0)
contents.Append (">");
else
contents.Append ((char)ch);
} else
contents.Append ((char)ch);
}
// FIXME: this should not be required, but Java.Util.Concurrent.ThreadPoolExecutor fails by invalid PI.
return contents.Replace ("<?>", "<?>").ToString ();
}
public string GetJavaDocPath (string name)
{
if (name.StartsWith ("mono/", StringComparison.OrdinalIgnoreCase)) {
// generator.exe-generated type; there are no docs
return null;
}
var path = new StringBuilder (SourceDocumentationRoot.Length + 1 + name.Length + 5)
.Append (SourceDocumentationRoot)
.Append (Path.DirectorySeparatorChar)
.Append (name.Replace ('$', '.'))
.Append (".html");
string file = path.ToString ();
if (!File.Exists (file)) {
Logger.Log (LoggingVerbosity.Warning, Errors.CouldNotFindSourceJavadoc, "Could not find source JavaDoc file: {0}.", file);
return null;
}
return file;
}
}
}