LISTEUR DE FICHIERS

#include <stdio.h>
#include <sys/types.h>
#include <dirent.h>
                                                                                                                            
#define FALSE 0
#define TRUE 1
                                                                                                                            
int main(int argc, char **argv)
{
                                                                                                                            
    struct dirent *read;
    DIR *rep;
    FILE* handle ;
    int i=0,j ;
    int list,save,help ;
    char filename[100] ;
    char dirname[100] ;
                                                                                                                            
                                                                                                                            
                                                                                                                            
    list=FALSE ;
    save=FALSE ;
    help=FALSE ;
                                                                                                                            
                                                                                                                            
    if(argc<2)
       { puts("Too few arguments. -h for help");
         return -1 ;
        }
                                                                                                                            
                                                                                                                            
    for(j=1 ; j<argc ; j++)
     { if(!strcmp(argv[j],"-h")) help=TRUE ;
       if(!strcmp(argv[j],"-l")) list=TRUE ;
       if(!strcmp(argv[j],"-s")) save=TRUE ;
     } 
 if(help)
           {
         puts("Help -- listing files 1.0\n") ;
         puts(" Valid arguments are :");
         puts("-l : list files contained in the directory");
         puts("-s : save files name in another file") ;
         return -1;
           }
                                                                                                                            
    if(save || list )
     {
    /* enter the directory */
    puts("Enter the path of the directory");
    fgets(dirname,100,stdin) ;
    dirname[strlen(dirname)-1]='\0' ;
     }
    /* ... */
                                                                                                                            
    /* open the file where datas will be saved in if save=TRUE*/
      if(save)
       {
          puts("Enter the path of the file where datas will be saved in");
          fgets(filename,100, stdin) ;
          filename[strlen(filename)-1]='\0' ; // delete \n
    if(!(handle=fopen(filename, "a")) )
     { fprintf(stderr, "\nFile can't be opened. Check the path\n");
      return -1 ;
     }
       }
                                                                                                                            
    /* list files if list=TRUE*/
                                                                                                                            
    rep = opendir(dirname);
    while ((read = readdir(rep)))
     {
          ++i ; // number of files in directory
if(list)
         printf("%d: %s\n", i-2,read->d_name); // do not count '.' and '..'
                                                                                                                            
          /* save files name in a file */
                                                                                                                            
     if(save)
         { fprintf(handle,"%d - %s\n" ,i-2, read->d_name) ;
          }
                                                                                                                            
                                                                                                                            
     }
      closedir(rep);
      if(save) fclose(handle) ;
                                                                                                                            
                                                                                                                            
                                                                                                                            
                                                                                                                            
                                                                                                                            
                                                                                                                            
    return 0 ;
                                                                                                                            
                                                                                                                            
}