我的代码中有以下内容:(用C编写)

    ftw(argv[2], parseFile, 100)

argv[2]是本地目录路径。例如。argv[2]=“testcases”,并且在与my.o文件相同的目录中有一个testcases文件夹。
我的理解是,这应该遍历目录testcases并将找到的每个文件发送到函数parsefile。
实际上,它只是将我的参数发送到函数parsefile,仅此而已。我做错什么了?我该如何正确使用它?
编辑:这是解析文件:
int parseFile(const char * ftw_filePath,const struct stat * ptr, int flags){
    FILE * file;
    TokenizerT * currFile;
    char fileString[1000], * currWord, * fileName;

    fileName = strdup(ftw_filePath);

    if( fileName == NULL || strlen(fileName) <= 0){
        free(fileName);
        return -1;
    }
    printf("\n%s\n",fileName);
    if(strcmp(fileName,"-h")== 0){
        printf("To run this program(wordstats) type './wordstat.c' followed by a space followed by the file's directory location. (e.g. Desktop/CS211/Assignment1/test.txt )");
        free(fileName);
        return 1;
    }
    else{
        file=fopen(fileName,"r");
    }

    if(!file){
        fprintf(stderr,"Error: File Does not Exist in designated location. Please restart the program and try again.\n");
        free(fileName);
        return 0;
    }
    memset(fileString, '\0', 1000);

    while(fscanf(file,"%s", fileString) != EOF){ /* traverses the file line by line*/
            stringToLower(fileString);
            currFile = TKCreate("alphanum",fileString);

            while((currWord = TKGetNextToken(currFile)) != NULL) {

                insert_List(currWord, words,fileName);

            }
            free(currFile->delimiters);
            free(currFile->copied_string);

            free(currFile);
        memset(fileString, '\0', 1000);
    }

    fclose(file);
    free(fileName);
    return 1;
}

如果我为我的argv[2]输入testcases/big.txt,它将起作用,但如果我放置testcases,它将不起作用

最佳答案

man page中所述,来自ftw正在调用的函数的非零返回值告诉ftw停止运行。
您的代码有各种返回语句,但唯一返回0的是错误条件。

关于c - 在C中正确使用ftw(),我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/19508835/

10-13 03:33