pytorch/caffe2/utils/string_utils.h

#pragma once

#include <algorithm>
#include <memory>
#include <string>
#include <vector>

#include "caffe2/core/common.h"
#include "caffe2/core/types.h"

namespace caffe2 {

CAFFE2_API std::vector<std::string> split(char separator, const std::string& string);

CAFFE2_API std::string trim(const std::string& str);

CAFFE2_API size_t editDistance(
  const std::string& s1, const std::string& s2, size_t max_distance = 0);

CAFFE2_API inline bool StartsWith(const std::string& str, const std::string& prefix) {
  return std::mismatch(prefix.begin(), prefix.end(), str.begin()).first ==
      prefix.end();
}

CAFFE2_API inline bool EndsWith(
    const std::string& full,
    const std::string& ending) {
  if (full.length() >= ending.length()) {
    return (
        0 ==
        full.compare(full.length() - ending.length(), ending.length(), ending));
  } else {
    return false;
  }
}

CAFFE2_API inline int32_t GetDimFromOrderString(const std::string& str) {
  auto order = StringToStorageOrder(str);
  switch (order) {
    case StorageOrder::NHWC:
      return 3;
    case StorageOrder::NCHW:
      return 1;
    default:
      CAFFE_THROW("Unsupported storage order: ", str);
      return -1;
  }
}

CAFFE2_API int32_t editDistanceHelper(const char* s1,
  size_t s1_len,
  const char* s2,
  size_t s2_len,
  std::vector<size_t> &current,
  std::vector<size_t> &previous,
  std::vector<size_t> &previous1,
  size_t max_distance);
} // namespace caffe2