src/developer/debug/ipc/filter_utils.cc

// Copyright 2022 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "src/developer/debug/ipc/filter_utils.h"

#include "src/developer/debug/ipc/records.h"

namespace debug_ipc {

namespace {

bool MatchComponentUrl(std::string_view url, std::string_view pattern) {
  // Only deals with the most common case: the target URL contains a hash but the pattern doesn't.
  // The hash will look like "?hash=xxx#".
  const char* hash = "?hash=";
  if (url.find(hash) != std::string_view::npos && url.find_last_of('#') != std::string_view::npos &&
      pattern.find(hash) == std::string_view::npos) {
    std::string new_url(url.substr(0, url.find(hash)));
    new_url += url.substr(url.find_last_of('#'));
    return new_url == pattern;
  }
  return url == pattern;
}

}  // namespace

bool FilterMatches(const Filter& filter, const std::string& process_name,
                   const std::optional<ComponentInfo>& component) {
  switch (filter.type) {
    case Filter::Type::kProcessNameSubstr:
      return process_name.find(filter.pattern) != std::string::npos;
    case Filter::Type::kProcessName:
      return process_name == filter.pattern;
    case Filter::Type::kComponentName:
      return component &&
             component->url.substr(component->url.find_last_of('/') + 1) == filter.pattern;
    case Filter::Type::kComponentUrl:
      return component && MatchComponentUrl(component->url, filter.pattern);
    case Filter::Type::kComponentMoniker:
      return component && component->moniker == filter.pattern;
    case Filter::Type::kUnset:
    case Filter::Type::kLast:
      return false;
  }
}

}  // namespace debug_ipc