我做了这段代码来检查给定的文件名是否为" .jpg"如果是,请将其更改为" .png":
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <stdio.h>
char newname[2000];
customRename(char *name) {
int i = strlen(name),
answer;
memset(newname, '\0', sizeof(newname));
strcpy(newname, name);
if ((name[i-1] == 'g') && (name[i-2] == 'p') && (name[i-3] == 'j') && (name[i-4] == '.')) {
newname[i-2] = 'n';
newname[i-3] = 'p';
answer = rename(name, newname);
if (answer == -1) {
fprintf(stderr, "%s -> %s: %s\n", name, newname, strerror(errno));
} else {
printf("%i: ", answer);
puts(newname);
}
}
}
void listdir(const char *name, int level)
{
DIR *dir;
struct dirent *entry;
struct stat s;
if (!(dir = opendir(name)))
return;
if (!(entry = readdir(dir)))
return;
do {
if (S_ISDIR(s.st_mode)) {
char path[1024];
int len = snprintf(path, sizeof(path)-1, "%s/%s", name, entry->d_name);
path[len] = 0;
if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0) {
continue;
}
//printf("%*s[%s]\n", level*2, "", entry->d_name);
listdir(path, level + 1);
}
else {
//printf("%*s- %s\n", level*2, "", entry->d_name);
customRename(entry->d_name);
}
} while (entry = readdir(dir));
closedir(dir);
}
int main() {
printf("Root path:\n");
char rootpath[2000];
gets(rootpath);
listdir(rootpath, 0);
return 0;
}
但是,由于某些未知原因,它打印出来:
-1: LF1603300450121ARG.png
-1
意味着出了问题......但出了什么问题?
提前致谢。
答案 0 :(得分:0)
int n = strlen(name);
if ( n > 4 ) {
if ( strcmp(&name[n-4], ".jpg") == 0 ) {
strcpy( &name[n-3], "png";
}
}