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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/*
********************************************************************************
*   © 2016 and later: Unicode, Inc. and others.
*   License & terms of use: http://www.unicode.org/copyright.html#License
********************************************************************************
********************************************************************************
 *   Copyright (C) 2005-2006, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *******************************************************************************
 */

#include "unicode/utypes.h"
#include "unicode/ucsdet.h"

#include <string.h>
#include <stdio.h>

#define BUFFER_SIZE 8192

int main(int argc, char *argv[])
{
    static char buffer[BUFFER_SIZE];
    int32_t arg;

    if( argc <= 1 ) {
        printf("Usage: %s [filename]...\n", argv[0]);
        return -1;
    }

    for(arg = 1; arg < argc; arg += 1) {
        FILE *file;
        char *filename = argv[arg];
        int32_t inputLength, match, matchCount = 0;
        UCharsetDetector* csd;
        const UCharsetMatch **csm;
        UErrorCode status = U_ZERO_ERROR;

        if (arg > 1) {
            printf("\n");
        }

        file = fopen(filename, "rb");

        if (file == NULL) {
            printf("Cannot open file \"%s\"\n\n", filename);
            continue;
        }

        printf("%s:\n", filename);

        inputLength = (int32_t) fread(buffer, 1, BUFFER_SIZE, file);

        fclose(file);

        csd = ucsdet_open(&status);
        ucsdet_setText(csd, buffer, inputLength, &status);

        csm = ucsdet_detectAll(csd, &matchCount, &status);

        for(match = 0; match < matchCount; match += 1) {
            const char *name = ucsdet_getName(csm[match], &status);
            const char *lang = ucsdet_getLanguage(csm[match], &status);
            int32_t confidence = ucsdet_getConfidence(csm[match], &status);

            if (lang == NULL || strlen(lang) == 0) {
                lang = "**";
            }

            printf("%s (%s) %d\n", name, lang, confidence);
        }

        ucsdet_close(csd);
    }
    
    return 0;
}