filter.h

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#pragma once
 
#include "esphome/core/component.h"
#include "esphome/core/helpers.h"
#include <queue>
#include <utility>
#include <map>
#include <vector>
 
namespace esphome {
namespace text_sensor {
 
class TextSensor;
 
class Filter {
 public:
  virtual optional<std::string> new_value(std::string value) = 0;
 
  virtual void initialize(TextSensor *parent, Filter *next);
 
  void input(const std::string &value);
 
  void output(const std::string &value);
 
 protected:
  friend TextSensor;
 
  Filter *next_{nullptr};
  TextSensor *parent_{nullptr};
};
class Filter {…};
 
using lambda_filter_t = std::function<optional<std::string>(std::string)>;
 
class LambdaFilter : public Filter {
 public:
  explicit LambdaFilter(lambda_filter_t lambda_filter);
 
  optional<std::string> new_value(std::string value) override;
 
  const lambda_filter_t &get_lambda_filter() const;
  void set_lambda_filter(const lambda_filter_t &lambda_filter);
 
 protected:
  lambda_filter_t lambda_filter_;
};
class LambdaFilter : public Filter {…};
 
class ToUpperFilter : public Filter {
 public:
  optional<std::string> new_value(std::string value) override;
};
class ToUpperFilter : public Filter {…};
 
class ToLowerFilter : public Filter {
 public:
  optional<std::string> new_value(std::string value) override;
};
class ToLowerFilter : public Filter {…};
 
class AppendFilter : public Filter {
 public:
  AppendFilter(std::string suffix) : suffix_(std::move(suffix)) {}
  optional<std::string> new_value(std::string value) override;
 
 protected:
  std::string suffix_;
};
class AppendFilter : public Filter {…};
 
class PrependFilter : public Filter {
 public:
  PrependFilter(std::string prefix) : prefix_(std::move(prefix)) {}
  optional<std::string> new_value(std::string value) override;
 
 protected:
  std::string prefix_;
};
class PrependFilter : public Filter {…};
 
class SubstituteFilter : public Filter {
 public:
  SubstituteFilter(std::vector<std::string> from_strings, std::vector<std::string> to_strings)
      : from_strings_(std::move(from_strings)), to_strings_(std::move(to_strings)) {}
  SubstituteFilter(std::vector<std::string> from_strings, std::vector<std::string> to_strings) {…}
  optional<std::string> new_value(std::string value) override;
 
 protected:
  std::vector<std::string> from_strings_;
  std::vector<std::string> to_strings_;
};
class SubstituteFilter : public Filter {…};
 
class MapFilter : public Filter {
 public:
  MapFilter(std::map<std::string, std::string> mappings) : mappings_(std::move(mappings)) {}
  optional<std::string> new_value(std::string value) override;
 
 protected:
  std::map<std::string, std::string> mappings_;
};
class MapFilter : public Filter {…};
 
}  // namespace text_sensor
}  // namespace esphome