非遞迴方式依檔案類型列舉

2012-11-02

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C/C++
2012-11-02

非遞迴方式依檔案類型列舉

Non-recursive list file win32 version
通常看到的版本都是遞迴列舉多層次目錄下的檔案，這裡舉個非遞迴列舉檔案的方法。利用stack來暫存資料夾路徑，每次從stack pop目錄路徑，列舉其下的名稱(檔案或目錄)，若是檔案則印出，若是目錄且非 "." 則 push in stack。當stack為空時則終止。


int scan_file_dir(char *szDir)
{
    HANDLE hFile;
    WIN32_FIND_DATA wfd;
    char szPath[MAX_PATH];
    char szFile[MAX_PATH];
    stack directory;
    int  nFile = 0;
    
    int nlen = strlen(szDir);
    strcpy(szPath, szDir);
    
    if (szPath[nlen-1] == '\\' || szPath[nlen-1] == '/')
    szPath[nlen-1] = '\0';
    
    //strcpy(szDir[nDir], szPath);
    directory.push(szPath);
    
    while(directory.size()&gt; 0) {
        
        strcpy(szPath, directory.top().c_str());
        sprintf(szFile, "%s/*.*", szPath);
        directory.pop();
        hFile = FindFirstFile(szFile, &wfd);
        
        if(hFile != INVALID_HANDLE_VALUE)
        {
            do {
                if(!(wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
                {
                    char szTmp[MAX_LINE];
                    sprintf(szTmp, "%s/%s", szPath, wfd.cFileName);
                    printf("%s\n", szTmp);
                    nFile++;
                }
                else if((wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)&&(wfd.cFileName[0] != '.'))
                {
                    char   szPathName[MAX_LINE];
                    sprintf(szPathName, "%s/%s", szPath, wfd.cFileName);
                    directory.push(szPathName);
                }
            } while(FindNextFile(hFile, &wfd));
            FindClose(hFile);
        }
    }
    return nFile;
}

Non-recursive list file unix version
列舉出副檔名為mp3、ogg、wma的檔案


int scan_song_dir(char *szDir)
{
    DIR           *dp;
    struct dirent *ep;
    struct stat st;
    char   szExt[5];
    char   szPath[MAX_PATH];
    char   szFile[MAX_PATH];
    int      nlen;
    stack directory;
    int    nSong = 0;
    
    nlen = strlen(szDir);
    strcpy(szPath, szDir);
    
    if (szPath[nlen -1] != '/' && szPath[nlen -1] != '\\')
    strcat(szPath, "/");
    
    directory.push(szPath);
    
    while(directory.size()> 0) {
        
        strcpy(szPath, directory.top().c_str());
        directory.pop();
        
        dp  =  opendir  (szPath);
        if  (dp  !=  NULL) {
            while  (ep  =  readdir  (dp)) {
                
                char   szPathName[MAX_LINE] = {'\0'};
                
                if(ep->d_name[0] == '.')
                continue;
                
                strcat(szPathName, szPath);
                strcat(szPathName, ep->d_name);
                
                //printf("path: %s\n", szPathName);
                //sprintf(szPathName, "%s/%s", szPath, ep->d_name);
                stat(szPathName, &st);
                
                if(S_ISDIR(st.st_mode)) {
                    strcat(szPathName, "/");
                    printf("append dir : %s\n", szPathName);
                    directory.push(szPathName);
                    
                }
                else {
                    nlen = strlen(ep->d_name);
                    if (nlen <5)
                    continue;
                    strncpy(szExt, ep->d_name + nlen - 4, 4);
                    szExt[4] = '\0';
                    
                    if(strstr(szExt, ".mp3") || strstr(szExt, ".wma") || strstr(szExt, ".ogg")) {
                        
                        printf("Song Path: %s\n", szPathName);
                        
                        nSong++;
                    }
                }
            }
            closedir(dp);
        }
        else
        printf("Cannot open the %s directory.\n", szPath);
    }
    
    return nSong;
}

Dotblogs 的標籤: WinAPI ,Unix

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