1 files changed, 296 insertions, 0 deletions
diff --git a/java/com/google/gerrit/common/data/PermissionRule.java b/java/com/google/gerrit/common/data/PermissionRule.java
new file mode 100644
index 0000000000..8ab0a55e7f
--- /dev/null
+++ b/java/com/google/gerrit/common/data/PermissionRule.java
@@ -0,0 +1,296 @@
+// Copyright (C) 2010 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.
+
+package com.google.gerrit.common.data;
+
+public class PermissionRule implements Comparable<PermissionRule> {
+  public static final String FORCE_PUSH = "Force Push";
+  public static final String FORCE_EDIT = "Force Edit";
+
+  public enum Action {
+    ALLOW,
+    DENY,
+    BLOCK,
+
+    INTERACTIVE,
+    BATCH
+  }
+
+  protected Action action = Action.ALLOW;
+  protected boolean force;
+  protected int min;
+  protected int max;
+  protected GroupReference group;
+
+  public PermissionRule() {}
+
+  public PermissionRule(GroupReference group) {
+    this.group = group;
+  }
+
+  public Action getAction() {
+    return action;
+  }
+
+  public void setAction(Action action) {
+    if (action == null) {
+      throw new NullPointerException("action");
+    }
+    this.action = action;
+  }
+
+  public boolean isDeny() {
+    return action == Action.DENY;
+  }
+
+  public void setDeny() {
+    action = Action.DENY;
+  }
+
+  public boolean isBlock() {
+    return action == Action.BLOCK;
+  }
+
+  public void setBlock() {
+    action = Action.BLOCK;
+  }
+
+  public boolean getForce() {
+    return force;
+  }
+
+  public void setForce(boolean newForce) {
+    force = newForce;
+  }
+
+  public int getMin() {
+    return min;
+  }
+
+  public void setMin(int min) {
+    this.min = min;
+  }
+
+  public void setMax(int max) {
+    this.max = max;
+  }
+
+  public int getMax() {
+    return max;
+  }
+
+  public void setRange(int newMin, int newMax) {
+    if (newMax < newMin) {
+      min = newMax;
+      max = newMin;
+    } else {
+      min = newMin;
+      max = newMax;
+    }
+  }
+
+  public GroupReference getGroup() {
+    return group;
+  }
+
+  public void setGroup(GroupReference newGroup) {
+    group = newGroup;
+  }
+
+  void mergeFrom(PermissionRule src) {
+    if (getAction() != src.getAction()) {
+      if (getAction() == Action.BLOCK || src.getAction() == Action.BLOCK) {
+        setAction(Action.BLOCK);
+
+      } else if (getAction() == Action.DENY || src.getAction() == Action.DENY) {
+        setAction(Action.DENY);
+
+      } else if (getAction() == Action.BATCH || src.getAction() == Action.BATCH) {
+        setAction(Action.BATCH);
+      }
+    }
+
+    setForce(getForce() || src.getForce());
+    setRange(Math.min(getMin(), src.getMin()), Math.max(getMax(), src.getMax()));
+  }
+
+  @Override
+  public int compareTo(PermissionRule o) {
+    int cmp = action(this) - action(o);
+    if (cmp == 0) {
+      cmp = range(o) - range(this);
+    }
+    if (cmp == 0) {
+      cmp = group(this).compareTo(group(o));
+    }
+    return cmp;
+  }
+
+  private static int action(PermissionRule a) {
+    switch (a.getAction()) {
+      case DENY:
+        return 0;
+      case ALLOW:
+      case BATCH:
+      case BLOCK:
+      case INTERACTIVE:
+      default:
+        return 1 + a.getAction().ordinal();
+    }
+  }
+
+  private static int range(PermissionRule a) {
+    return Math.abs(a.getMin()) + Math.abs(a.getMax());
+  }
+
+  private static String group(PermissionRule a) {
+    return a.getGroup().getName() != null ? a.getGroup().getName() : "";
+  }
+
+  @Override
+  public String toString() {
+    return asString(true);
+  }
+
+  public String asString(boolean canUseRange) {
+    StringBuilder r = new StringBuilder();
+
+    switch (getAction()) {
+      case ALLOW:
+        break;
+
+      case DENY:
+        r.append("deny ");
+        break;
+
+      case BLOCK:
+        r.append("block ");
+        break;
+
+      case INTERACTIVE:
+        r.append("interactive ");
+        break;
+
+      case BATCH:
+        r.append("batch ");
+        break;
+    }
+
+    if (getForce()) {
+      r.append("+force ");
+    }
+
+    if (canUseRange && (getMin() != 0 || getMax() != 0)) {
+      if (0 <= getMin()) {
+        r.append('+');
+      }
+      r.append(getMin());
+      r.append("..");
+      if (0 <= getMax()) {
+        r.append('+');
+      }
+      r.append(getMax());
+      r.append(' ');
+    }
+
+    r.append(getGroup().toConfigValue());
+
+    return r.toString();
+  }
+
+  public static PermissionRule fromString(String src, boolean mightUseRange) {
+    final String orig = src;
+    final PermissionRule rule = new PermissionRule();
+
+    src = src.trim();
+
+    if (src.startsWith("deny ")) {
+      rule.setAction(Action.DENY);
+      src = src.substring("deny ".length()).trim();
+
+    } else if (src.startsWith("block ")) {
+      rule.setAction(Action.BLOCK);
+      src = src.substring("block ".length()).trim();
+
+    } else if (src.startsWith("interactive ")) {
+      rule.setAction(Action.INTERACTIVE);
+      src = src.substring("interactive ".length()).trim();
+
+    } else if (src.startsWith("batch ")) {
+      rule.setAction(Action.BATCH);
+      src = src.substring("batch ".length()).trim();
+    }
+
+    if (src.startsWith("+force ")) {
+      rule.setForce(true);
+      src = src.substring("+force ".length()).trim();
+    }
+
+    if (mightUseRange && !GroupReference.isGroupReference(src)) {
+      int sp = src.indexOf(' ');
+      String range = src.substring(0, sp);
+
+      if (range.matches("^([+-]?\\d+)\\.\\.([+-]?\\d+)$")) {
+        int dotdot = range.indexOf("..");
+        int min = parseInt(range.substring(0, dotdot));
+        int max = parseInt(range.substring(dotdot + 2));
+        rule.setRange(min, max);
+      } else {
+        throw new IllegalArgumentException("Invalid range in rule: " + orig);
+      }
+
+      src = src.substring(sp + 1).trim();
+    }
+
+    String groupName = GroupReference.extractGroupName(src);
+    if (groupName != null) {
+      GroupReference group = new GroupReference();
+      group.setName(groupName);
+      rule.setGroup(group);
+    } else {
+      throw new IllegalArgumentException("Rule must include group: " + orig);
+    }
+
+    return rule;
+  }
+
+  public boolean hasRange() {
+    return getMin() != 0 || getMax() != 0;
+  }
+
+  public static int parseInt(String value) {
+    if (value.startsWith("+")) {
+      value = value.substring(1);
+    }
+    return Integer.parseInt(value);
+  }
+
+  @Override
+  public boolean equals(Object obj) {
+    if (!(obj instanceof PermissionRule)) {
+      return false;
+    }
+    final PermissionRule other = (PermissionRule) obj;
+    return action.equals(other.action)
+        && force == other.force
+        && min == other.min
+        && max == other.max
+        && group.equals(other.group);
+  }
+
+  @Override
+  public int hashCode() {
+    return group.hashCode();
+  }
+}