我希望读取特定文件夹中的所有文本文件。 文件的名字没有任何共同的模式，否则这个任务会变得更容易。
//read a file from the directory //Perform a common operation //write output to a common file //read the next file
如果我可以解决子文件夹问题，那将是一件好事，但即使是基本的实现也是足够的。
我试着查看以前提出的相关问题（ 这里 ， 这里和这里 ），但没有一个给出了我需要的C和Linux特定的答案。
编辑 ：所以，这是我根据收到的答案写的 –
statvfs系统调用失败，错误值对于定义的数据types太大
seekg（）读取文本文件时奇怪的偏移量
#include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/types.h> #include <dirent.h> #include <unistd.h> #include <errno.h> int main(int argc,char **argv) { DIR* FD; struct dirent* in_file; FILE *output_file; FILE *entry_file; char buffer[BUFSIZ]; /* opening common file for writing */ output_file = fopen("/home/pnp/snort_rules_folder/rulesoutput.txt","a+"); if (output_file == NULL) { fprintf(stderr,"Error : Failed to open output_filen"); return 1; } /* Scanning the in directory */ if (NULL == (FD = opendir ("/home/pnp/snort_rules_folder/rules"))) { fprintf(stderr,"Error : Failed to open input directoryn"); fclose(output_file); return 1; } while ((in_file = readdir(FD))) { /* On linux/Unix we don't want current and parent directories * If you're on Windows machine remove this two lines */ if (!strcmp (in_file->d_name,".")) continue; if (!strcmp (in_file->d_name,"..")) continue; /* Open directory entry file for common operation */ /* Todo : change permissions to meet your need! */ entry_file = fopen(in_file->d_name,"r"); if (entry_file == NULL) { fprintf(stderr,"Error : Failed to open entry filen"); fclose(output_file); return 1; } /* Doing some stuff with entry_file : */ while (fgets(buffer,BUFSIZ,entry_file) != NULL) { /* Use fprintf or fwrite to write some stuff into common_file*/ } fprintf(output_file,"reading file %s",in_file->d_name); /* When you finish with the file,close it */ fclose(entry_file); } /* Don't forget to close common file before leaving */ fclose(output_file); return 0; }
收到的错误 –
pnp @ pnp-laptop：〜/ snort_rules_folder $ ./a.out
如何限制程序的文件权限
使用Java的文件/目录的networkingpath
寻找文本文件的编码
#include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/types.h> #include <dirent.h> #include <unistd.h> #include <errno.h> /* This is just a sample code,modify it to meet your need */ int main(int argc,char **argv) { DIR* FD; struct dirent* in_file; FILE *common_file; FILE *entry_file; char buffer[BUFSIZ]; /* Openiing common file for writing */ common_file = fopen(path_to_your_common_file,"w"); if (common_file == NULL) { fprintf(stderr,"Error : Failed to open common_file - %sn",strerror(errno)); return 1; } /* Scanning the in directory */ if (NULL == (FD = opendir (in_dir))) { fprintf(stderr,"Error : Failed to open input directory - %sn",strerror(errno)); fclose(common_file); return 1; } while ((in_file = readdir(FD))) { /* On linux/Unix we don't want current and parent directories * On windows machine too,thanks Greg Hewgill */ if (!strcmp (in_file->d_name,"rw"); if (entry_file == NULL) { fprintf(stderr,"Error : Failed to open entry file - %sn",strerror(errno)); fclose(common_file); return 1; } /* Doing some struf with entry_file : */ /* For example use fgets */ while (fgets(buffer,entry_file) != NULL) { /* Use fprintf or fwrite to write some stuff into common_file*/ } /* When you finish with the file,close it */ fclose(entry_file); } /* Don't forget to close common file before leaving */ fclose(common_file); return 0; }
希望这个hellp。
问候。
这些应该让你开始：
opendir()
readdir()
closedir()
fwrite()
fclose()
请参阅其他C IO功能。
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