Parse username from password entry, refs #192 (#318)

This is a first step of letting APS handle usernames from password
entries. It shows the username in PgpHandler and allows to copy it to
the clipboard.

1 files changed, 59 insertions, 0 deletions

diff --git a/app/src/main/java/com/zeapo/pwdstore/PasswordEntry.java b/app/src/main/java/com/zeapo/pwdstore/PasswordEntry.java
new file mode 100644
index 00000000..d4d3fe81
--- /dev/null
+++ b/app/src/main/java/com/zeapo/pwdstore/PasswordEntry.java
@@ -0,0 +1,59 @@
+package com.zeapo.pwdstore;
+
+import java.io.ByteArrayOutputStream;
+import java.io.UnsupportedEncodingException;
+
+/**
+ * A single entry in password store.
+ */
+public class PasswordEntry {
+
+    private static final String[] USERNAME_FIELDS = new String[]{"login", "username"};
+
+    private final String extraContent;
+    private final String password;
+    private final String username;
+
+    public PasswordEntry(final ByteArrayOutputStream os) throws UnsupportedEncodingException {
+        this(os.toString("UTF-8"));
+    }
+
+    public PasswordEntry(final String decryptedContent) {
+        final String[] passContent = decryptedContent.split("\n", 2);
+        password = passContent[0];
+        extraContent = passContent.length > 1 ? passContent[1] : "";
+        username = findUsername();
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public String getExtraContent() {
+        return extraContent;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public boolean hasExtraContent() {
+        return extraContent.length() != 0;
+    }
+
+    public boolean hasUsername() {
+        return username != null;
+    }
+
+    private String findUsername() {
+        final String[] extraLines = extraContent.split("\n");
+        for (String line : extraLines) {
+            for (String field : USERNAME_FIELDS) {
+                if (line.toLowerCase().startsWith(field + ":")) {
+                    return line.split(": *", 2)[1];
+                }
+            }
+        }
+        return null;
+    }
+}