晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 sh-3ll

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DIR:/usr/include/mysql/server/private/providers/
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Current File : //usr/include/mysql/server/private/providers/snappy-c.h
/**
  @file snappy-c.h
  This service provides dynamic access to Snappy as a C header.
*/

#ifndef SNAPPY_C_INCLUDED
#ifdef __cplusplus
extern "C" {
#endif

#ifndef MYSQL_ABI_CHECK
#include <stddef.h>
#include <stdbool.h>
#endif

#ifndef MYSQL_DYNAMIC_PLUGIN
#define provider_service_snappy provider_service_snappy_static
#endif

#ifndef SNAPPY_C
typedef enum
{
  SNAPPY_OK                 = 0,
  SNAPPY_INVALID_INPUT      = 1,
  SNAPPY_BUFFER_TOO_SMALL   = 2
} snappy_status;

#define snappy_max_compressed_length(...) provider_service_snappy->snappy_max_compressed_length_ptr (__VA_ARGS__)
#define snappy_compress(...)              provider_service_snappy->snappy_compress_ptr              (__VA_ARGS__)
#define snappy_uncompressed_length(...)   provider_service_snappy->snappy_uncompressed_length_ptr   (__VA_ARGS__)
#define snappy_uncompress(...)            provider_service_snappy->snappy_uncompress_ptr            (__VA_ARGS__)
#endif

#define DEFINE_snappy_max_compressed_length(NAME) NAME( \
    size_t source_length                                \
)

#define DEFINE_snappy_compress(NAME) NAME( \
    const char *input,                     \
    size_t input_length,                   \
    char *compressed,                      \
    size_t *compressed_length              \
)

#define DEFINE_snappy_uncompressed_length(NAME) NAME( \
    const char *compressed,                           \
    size_t compressed_length,                         \
    size_t *result                                    \
)

#define DEFINE_snappy_uncompress(NAME) NAME(  \
    const char *compressed,                   \
    size_t compressed_length,                 \
    char *uncompressed,                       \
    size_t *uncompressed_length               \
)

struct provider_service_snappy_st
{
  size_t DEFINE_snappy_max_compressed_length((*snappy_max_compressed_length_ptr));
  snappy_status DEFINE_snappy_compress((*snappy_compress_ptr));
  snappy_status DEFINE_snappy_uncompressed_length((*snappy_uncompressed_length_ptr));
  snappy_status DEFINE_snappy_uncompress((*snappy_uncompress_ptr));

  bool is_loaded;
};

extern struct provider_service_snappy_st *provider_service_snappy;

#ifdef __cplusplus
}
#endif

#define SNAPPY_C_INCLUDED
#endif