//====================================================================// 文件：parser.c// 描述：用于解釋指定的專用xml文件，獲取服務(wù)器信息以及文件信息// 作者：seeker// 日期：2007-06-19//====================================================================#include "nxml.h"#include <stdarg.h>// 下載地址結(jié)構(gòu)typedef struct ServerUrl{   char *svr_url;  // 服務(wù)器地址   char *svr_port; // 端口（保留） }ServerUrl,*PServerUrl;// xml包含的文件信息結(jié)構(gòu)typedef struct FileInfo{   char *filehash;     // 文件hash   char *filename;     // 文件名   char *playdatetime; // 節(jié)目時間   char *playlength;   // 播放時長   char *coursename;   // 課程名稱   char *techer;       // 主講人、單位   char *tcobj;        // 教學(xué)對象}FileInfo,*PFileInfo;//====================================================================/*void my_printf (char *str, ...){va_list va;va_start (va, str);vfprintf (stderr, str, va);va_end (va);}*/int main (int argc, char **argv){   nxml_t *data;     //xml文件對象   nxml_error_t ret; //函數(shù)執(zhí)行結(jié)果   nxml_data_t *element, *tmp,*tmp2;//*tmp3; // 節(jié)點數(shù)據(jù)   // nxml_doctype_t *doctype;//編碼類型   if (argc != 2)   {      fprintf (stderr,         "Usage?\n\t%s url_xml\n\nExample:\n\t%s [file.xml|http://server/file.xml]\n\n",         argv[0], argv[0]);      return 1;   }   //初始化文件對象   ret = nxml_new (&data);   if (ret != NXML_OK)   {      puts (nxml_strerror (ret));      return 1;   }   /*// 打印xml 文件信息：   printf("FileName:%s\nSize:%d\nVersion:%d\nStandalone:%d\nEncoding:%s\n",   data->file,data->size,data->version,data->standalone,data->encoding);*/   /* ret = nxml_set_func (data, my_printf);//？？？   if (ret != NXML_OK)   {   puts (nxml_strerror (ret));   return 1;   }*/   /* if (!strncmp (argv[1], "http://", 7)) //判斷是否http:// 開頭   ret = nxml_parse_url (data, argv[1]);   else*/   ret = nxml_parse_file (data, argv[1]);// 文件而已    if (ret != NXML_OK)   {      puts (nxml_strerror (ret));      return 1;   }   // 開始解釋文件   // 根節(jié)點   nxml_root_element (data, &element);// 查找根節(jié)點   //printf ("根節(jié)點: %p: -%s-\n", element, element ? element->value : "");   printf ("根節(jié)點: -%s-\n", element ? element->value : "");   if (element)// 如果存在根節(jié)點   {      tmp = element->children;      while (tmp)      {         // char *hash,*completed,*leecher;         printf ("\t子節(jié)點1: -%s-\n",tmp ? tmp->value : "");         // free(hash);free(completed);free(leecher);      	           //-----------------------------------            tmp2=tmp->children; // 打印2級節(jié)點和對應(yīng)的參數(shù)值         PFileInfo pfi=(PFileInfo)malloc(sizeof(struct FileInfo));         memset(pfi,'\0',sizeof(struct FileInfo));	               while(tmp2)         {            printf ("\t\t子節(jié)點2: -%s-\n",tmp2 ? tmp2->value : "");            if(strlen(tmp2->value)>0) //保證節(jié)點名不為空            {               if( strcmp(tmp2->value,"filehash")==0)                  pfi->filehash=nxmle_find_attribute(tmp2,tmp2->value,&ret);               if( strcmp(tmp2->value,"filename")==0)                  pfi->filename=nxmle_find_attribute(tmp2,tmp2->value,&ret);	                         if( strcmp(tmp2->value,"playdatetime")==0)                  pfi->playdatetime=nxmle_find_attribute(tmp2,tmp2->value,&ret);               if( strcmp(tmp2->value,"playlength")==0)                  pfi->playlength=nxmle_find_attribute(tmp2,tmp2->value,&ret);               if( strcmp(tmp2->value,"coursename")==0)                  pfi->coursename=nxmle_find_attribute(tmp2,tmp2->value,&ret);               if( strcmp(tmp2->value,"techer")==0)                  pfi->techer=nxmle_find_attribute(tmp2,tmp2->value,&ret);               if( strcmp(tmp2->value,"tcobj")==0)                  pfi->tcobj=nxmle_find_attribute(tmp2,tmp2->value,&ret);            }            //================================            /*    tmp3=tmp2->children; // 打印3級節(jié)點和對應(yīng)的參數(shù)值            while(tmp3)            {            char *id,*ip,*uploaded,*download;            id= nxmle_find_attribute(tmp3,"id",&ret);            ip= nxmle_find_attribute(tmp3,"ip",&ret);            uploaded= nxmle_find_attribute(tmp3,"uploaded",&ret);            download= nxmle_find_attribute(tmp3,"downloaded",&ret);               printf ("\t\t\t子節(jié)點3: -%s-\n",tmp3 ? tmp3->value : "");            printf ("               \tid=%s\n\t\tip=%s\n\t\tup=%s\n\t\tdl=%s\n",id,ip,uploaded,download);              free(id); free(ip); free(uploaded); free(download);            tmp3 = tmp3->next;            }*/            tmp2 = tmp2->next;           }//while         //================================          printf ("\n               \tfilehash=%s\n\t\tfilename=%s\n\t\tplaydatetime=%s\n\t\tplaylength=%s\n\t\tcoursename=%s\n\t\ttecher=%s\n\t\ttcobj=%s\n\n",            pfi->filehash,pfi->filename,pfi->playdatetime,            pfi->playlength,pfi->coursename,pfi->techer,pfi->tcobj); 	                  free(pfi);         //----------------------------------         tmp = tmp->next;      }   }   /*   // 查找指定節(jié)點！   nxml_find_element (data, element, "welcome-file-list", &element);   if (element && nxml_find_element (data, element, "welcome-file", &element) == NXML_OK   && element)   {   printf ("\nwelcome-file: -%p- -%s-\n", element,element->value);   }   // 文件類型   nxml_doctype_element (data, &doctype);   if (doctype)   printf ("\nDoctype: -%s-%s-\n", doctype->name, doctype->value);   */   nxml_free (data); // 釋放內(nèi)存   return 0;}