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這是我寫的遞歸導航和輸出目錄和常規文件的C程序。它在我的Linux機器上編譯並運行良好。但在Solaris上，dit->d_type == 8檢查和其他類似檢查不起作用，因爲沒有d_type字段。我讀過這個問題的一個答案是使用S_ISREG()和S_ISDIR()宏，但它們目前在我的代碼中並沒有像我的代碼那樣工作。我評論了在我的Linux機器上工作的線路。如何使用S_ISREG（）和S_ISDIR（）POSIX宏？
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <dirent.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
void helper(DIR *, struct dirent *, struct stat, char *, int, char **);
void dircheck(DIR *, struct dirent *, struct stat, char *, int, char **);
int main(int argc, char *argv[]){
DIR *dip;
struct dirent *dit;
struct stat statbuf;
char currentPath[FILENAME_MAX];
int depth = 0; /*Used to correctly space output*/
/*Open Current Directory*/
if((dip = opendir(".")) == NULL)
return errno;
/*Store Current Working Directory in currentPath*/
if((getcwd(currentPath, FILENAME_MAX)) == NULL)
return errno;
/*Read all items in directory*/
while((dit = readdir(dip)) != NULL){
/*Skips . and ..*/
if(strcmp(dit->d_name, ".") == 0 || strcmp(dit->d_name, "..") == 0)
continue;
if(stat(currentPath, &statbuf) == -1){
perror("stat");
return errno;
}
/*Checks if current item is of the type file (type 8) and no command line arguments
if(dit->d_type == 8 && argv[1] == NULL)*/
if(S_ISREG(statbuf.st_mode) && argv[1] == NULL)
printf("%s (%d bytes)\n", dit->d_name, (int)statbuf.st_size);
/*If a command line argument is given, checks for filename match
if(dit->d_type == 8 && argv[1] != NULL)*/
if(S_ISREG(statbuf.st_mode) && argv[1] != NULL)
if(strcmp(dit->d_name, argv[1]) == 0)
printf("%s (%d bytes)\n", dit->d_name, (int)statbuf.st_size);
/*Checks if current item is of the type directory (type 4)
if(dit->d_type == 4)*/
if(S_ISDIR(statbuf.st_mode))
dircheck(dip, dit, statbuf, currentPath, depth, argv);
}
closedir(dip);
return 0;
}
/*Recursively called helper function*/
void helper(DIR *dip, struct dirent *dit, struct stat statbuf,
char currentPath[FILENAME_MAX], int depth, char *argv[]){
int i = 0;
if((dip = opendir(currentPath)) == NULL)
printf("Error: Failed to open Directory ==> %s\n", currentPath);
while((dit = readdir(dip)) != NULL){
if(strcmp(dit->d_name, ".") == 0 || strcmp(dit->d_name, "..") == 0)
continue;
stat(currentPath, &statbuf);
/*if(dit->d_type == 8 && argv[1] == NULL){*/
if(S_ISREG(statbuf.st_mode) && argv[1] == NULL){
for(i = 0; i < depth; i++)
printf(" ");
printf("%s (%d bytes)\n", dit->d_name, (int)statbuf.st_size);
}
/*if(dit->d_type == 8 && argv[1] != NULL){*/
if(S_ISREG(statbuf.st_mode) && argv[1] != NULL){
if(strcmp(dit->d_name, argv[1]) == 0){
for(i = 0; i < depth; i++)
printf(" ");
printf("%s (%d bytes)\n", dit->d_name, (int)statbuf.st_size);
}
}
/*if(dit->d_type == 4)*/
if(S_ISDIR(statbuf.st_mode))
dircheck(dip, dit, statbuf, currentPath, depth, argv);
}
}
void dircheck(DIR *dip, struct dirent *dit, struct stat statbuf,
char currentPath[FILENAME_MAX], int depth, char *argv[]){
int i = 0;
strcat(currentPath, "/");
strcat(currentPath, dit->d_name);
/*If two directories exist at the same level the path
is built wrong and needs to be corrected*/
if((chdir(currentPath)) == -1){
chdir("..");
getcwd(currentPath, FILENAME_MAX);
strcat(currentPath, "/");
strcat(currentPath, dit->d_name);
for(i = 0; i < depth; i++)
printf (" ");
printf("%s (subdirectory)\n", dit->d_name);
depth++;
helper(dip, dit, statbuf, currentPath, depth, argv);
}
else{
for(i =0; i < depth; i++)
printf(" ");
printf("%s (subdirectory)\n", dit->d_name);
chdir(currentPath);
depth++;
helper(dip, dit, statbuf, currentPath, depth, argv);
}
}
我已將代碼恢復到原始狀態，因爲問題沒有任何意義。你提供工作代碼是很好的，但這屬於答案，而不是問題。如果您認爲需要發佈實現mu解決方案的完整代碼，請將其作爲答案發布。 – Gilles 2012-02-28 17:58:53
這已經坐了一年多了，並且有相當數量的意見。沒有理由刪除正確的代碼，因爲來到這裏的人可能會對它感興趣（並解決了問題）。有破解的解決方案不會幫助任何人。如果您想將其更改回來，那麼至少應先將解決方案粘貼爲答案。 – zalberico 2012-03-27 23:41:22
這與「樹」相同嗎？ – 2015-01-17 11:39:57