/*
  Copyright (C) 2016-2018  Brazil
  Copyright (C) 2019-2022  Sutou Kouhei <kou@clear-code.com>

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License version 2.1 as published by the Free Software Foundation.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/

#pragma once

#ifdef __cplusplus
extern "C" {
#endif

#define GRN_RAW_STRING_INIT(string) do {        \
    string.value = NULL;                        \
    string.length = 0;                          \
  } while (false)

#define GRN_RAW_STRING_SET(string, bulk) do {      \
    if (bulk && GRN_TEXT_LEN(bulk) > 0) {          \
      string.value = GRN_TEXT_VALUE(bulk);         \
      string.length = GRN_TEXT_LEN(bulk);          \
    } else {                                       \
      string.value = NULL;                         \
      string.length = 0;                           \
    }                                              \
  } while (false)

#define GRN_RAW_STRING_SET_CSTRING(string, cstring) do {     \
    string.value = cstring;                                  \
    string.length = (cstring == NULL) ? 0 : strlen(cstring); \
  } while (false)

#define GRN_RAW_STRING_FILL(string, bulk) do {     \
    if (bulk && GRN_TEXT_LEN(bulk) > 0) {          \
      string.value = GRN_TEXT_VALUE(bulk);         \
      string.length = GRN_TEXT_LEN(bulk);          \
    }                                              \
  } while (false)

#define GRN_RAW_STRING_EQUAL(string, other_string)                      \
  (string.length == other_string.length &&                              \
   memcmp(string.value, other_string.value, string.length) == 0)

#define GRN_RAW_STRING_EQUAL_CSTRING(string, cstring)           \
  (cstring == NULL ?                                            \
   (string.length == 0) :                                       \
   (string.length == strlen(cstring) &&                         \
    memcmp(string.value, cstring, string.length) == 0))

#define GRN_RAW_STRING_EQUAL_CSTRING_CI(string, cstring)                \
  (cstring == NULL ?                                                    \
   (string.length == 0) :                                               \
   (string.length == strlen(cstring) &&                                 \
    grn_strncasecmp(string.value, cstring, string.length) == 0))

#define GRN_RAW_STRING_START_WITH_CSTRING(string, cstring)              \
  (cstring == NULL ?                                                    \
   true :                                                               \
   (string.length >= strlen(cstring) &&                                 \
    memcmp(string.value, cstring, strlen(cstring)) == 0))

#define GRN_RAW_STRING_END_WITH_CSTRING(string, cstring)                \
  (cstring == NULL ?                                                    \
   true :                                                               \
   (string.length >= strlen(cstring) &&                                 \
    memcmp(string.value + string.length - strlen(cstring),              \
           cstring,                                                     \
           strlen(cstring)) == 0))

typedef struct {
  const char *value;
  size_t length;
} grn_raw_string;

GRN_API void grn_raw_string_lstrip(grn_ctx *ctx, grn_raw_string *string);
GRN_API bool
grn_raw_string_have_sub_string(grn_ctx *ctx,
                               grn_raw_string *string,
                               grn_raw_string *sub_string);
GRN_API bool
grn_raw_string_have_sub_string_cstring(grn_ctx *ctx,
                                       grn_raw_string *string,
                                       const char *sub_cstring);
GRN_API grn_raw_string
grn_raw_string_substring(grn_ctx *ctx,
                         const grn_raw_string *string,
                         size_t start,
                         int64_t length);

#ifdef __cplusplus
}
#endif
