Initial Contribution

1 files changed, 94 insertions, 0 deletions

diff --git a/tools/droiddoc/src/SourcePositionInfo.java b/tools/droiddoc/src/SourcePositionInfo.java
new file mode 100644
index 0000000..6244803
--- /dev/null
+++ b/tools/droiddoc/src/SourcePositionInfo.java
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+public class SourcePositionInfo implements Comparable
+{
+    public SourcePositionInfo() {
+        this.file = "<unknown>";
+        this.line = 0;
+        this.column = 0;
+    }
+
+    public SourcePositionInfo(String file, int line, int column)
+    {
+        this.file = file;
+        this.line = line;
+        this.column = column;
+    }
+
+    public SourcePositionInfo(SourcePositionInfo that)
+    {
+        this.file = that.file;
+        this.line = that.line;
+        this.column = that.column;
+    }
+
+    /**
+     * Given this position and str which occurs at that position, as well as str an index into str,
+     * find the SourcePositionInfo.
+     *
+     * @throw StringIndexOutOfBoundsException if index &gt; str.length()
+     */
+    public static SourcePositionInfo add(SourcePositionInfo that, String str, int index)
+    {
+        if (that == null) {
+            return null;
+        }
+        int line = that.line;
+        char prev = 0;
+        for (int i=0; i<index; i++) {
+            char c = str.charAt(i);
+            if (c == '\r' || (c == '\n' && prev != '\r')) {
+                line++;
+            }
+            prev = c;
+        }
+        return new SourcePositionInfo(that.file, line, 0);
+    }
+
+    public static SourcePositionInfo findBeginning(SourcePositionInfo that, String str)
+    {
+        if (that == null) {
+            return null;
+        }
+        int line = that.line-1; // -1 because, well, it seems to work
+        int prev = 0;
+        for (int i=str.length()-1; i>=0; i--) {
+            char c = str.charAt(i);
+            if ((c == '\r' && prev != '\n') || (c == '\n')) {
+                line--;
+            }
+            prev = c;
+        }
+        return new SourcePositionInfo(that.file, line, 0);
+    }
+
+    public String toString()
+    {
+        return file + ':' + line;
+    }
+
+    public int compareTo(Object o) {
+        SourcePositionInfo that = (SourcePositionInfo)o;
+        int r = this.file.compareTo(that.file);
+        if (r != 0) return r;
+        return this.line - that.line;
+    }
+
+    public String file;
+    public int line;
+    public int column;
+}