Parsing Error on Posts having a title being started by a special character

[josephace135]

Expected behavior

Posts having a title being started by a special character should be displayed when tapped.

Actual behavior

Upon tapping a post that has a title being started by a special character, the app crashes.

How to reproduce

• In the "Home" page, select a "Community" and tap its designated icon.
• Select a post that has a title being started by a special character and tap it.
• Upon tapping that post, the app crashes.

Logcat Report

08-17 22:14:27.440  9321  9321 E AndroidRuntime: FATAL EXCEPTION: main
08-17 22:14:27.440  9321  9321 E AndroidRuntime: Process: com.hapramp, PID: 9321
08-17 22:14:27.440  9321  9321 E AndroidRuntime: java.lang.ExceptionInInitializerError
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at org.commonmark.internal.InlineParserImpl.parseEntity(InlineParserImpl.java:751)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at org.commonmark.internal.InlineParserImpl.parseInline(InlineParserImpl.java:303)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at org.commonmark.internal.InlineParserImpl.parse(InlineParserImpl.java:174)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at org.commonmark.internal.ParagraphParser.parseInlines(ParagraphParser.java:61)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at org.commonmark.internal.DocumentParser.processInlines(DocumentParser.java:410)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at org.commonmark.internal.DocumentParser.finalizeAndProcess(DocumentParser.java:529)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at org.commonmark.internal.DocumentParser.parse(DocumentParser.java:118)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at org.commonmark.parser.Parser.parse(Parser.java:63)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at com.hapramp.utils.RegexUtils.getHtmlContent(RegexUtils.java:15)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at com.hapramp.ui.activity.DetailedActivity.renderMarkdown(DetailedActivity.java:296)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at com.hapramp.ui.activity.DetailedActivity.bindPostValues(DetailedActivity.java:285)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at com.hapramp.ui.activity.DetailedActivity.collectExtras(DetailedActivity.java:181)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at com.hapramp.ui.activity.DetailedActivity.onCreate(DetailedActivity.java:162)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at android.app.Activity.performCreate(Activity.java:6904)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1136)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3266)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3415)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at android.app.ActivityThread.access$1100(ActivityThread.java:229)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1821)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at android.os.Handler.dispatchMessage(Handler.java:102)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at android.os.Looper.loop(Looper.java:148)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at android.app.ActivityThread.main(ActivityThread.java:7406)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at java.lang.reflect.Method.invoke(Native Method)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: Caused by: java.lang.NullPointerException: lock == null
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at java.io.Reader.<init>(Reader.java:64)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at java.io.InputStreamReader.<init>(InputStreamReader.java:122)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at org.commonmark.internal.util.Html5Entities.readEntities(Html5Entities.java:54)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	at org.commonmark.internal.util.Html5Entities.<clinit>(Html5Entities.java:17)
08-17 22:14:27.440  9321  9321 E AndroidRuntime: 	... 25 more

In the above logcat report, the issue is caused by java.lang.NullPointerException: lock == null, at Html5Entities.java especially in lines 17 and 54, which in turn causes error in the following files: InlineParserImpl.java, ParagraphParser.java, DocumentParser.java, Parser.java, DetailedActivity.java, RegexUtils.java and etc.

Environment

• App/Plugin version: HapRamp-Android v0.0.10 (at the time of detection) and v0.0.11
• Device: Samsung Galaxy J2 Prime (SM-G532G/DS)
• Operating system: Android version 6.0.1

Recording Of The Bug

Post 1
https://www.youtube.com/watch?v=xAYi4Qy16sg

Post 2
https://www.youtube.com/watch?v=AN_AleIwXlA