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micro-utils
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This commit is contained in:
Your Name 2023-10-20 00:19:46 +03:00
parent b701e39fbb
commit b8fcbcce94
2 changed files with 47 additions and 14 deletions
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5
coreutils/clear.c
View File

@ -1,6 +1,5 @@
#include <stdio.h>
#include <unistd.h>
int main(void) {
puts("\033c");
return 0;
return write(1, "\033[H\033[J", 6) != 6;
}

56
coreutils/ls.c
View File

@ -1,11 +1,21 @@
#include <time.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <dirent.h>
#include <sys/stat.h>
#include <sys/types.h>
unsigned int a_flag;
unsigned int l_flag;
int list(const char *path, int flag, int label) {
void PrintPerm(struct stat sb) {
printf("%c", (S_ISDIR(sb.st_mode)) ? 'd' : '-');
printf("%c%c%c", (sb.st_mode & S_IRUSR) ? 'r' : '-', (sb.st_mode & S_IWUSR) ? 'w' : '-', (sb.st_mode & S_IXUSR) ? 'x' : '-');
printf("%c%c%c", (sb.st_mode & S_IRGRP) ? 'r' : '-', (sb.st_mode & S_IWGRP) ? 'w' : '-', (sb.st_mode & S_IXGRP) ? 'x' : '-');
printf("%c%c%c", (sb.st_mode & S_IROTH) ? 'r' : '-', (sb.st_mode & S_IWOTH) ? 'w' : '-', (sb.st_mode & S_IXOTH) ? 'x' : '-');
}
int list(const char *path, int label) {
struct stat statbuf;
if (stat(path, &statbuf)) {
fprintf(stderr, "ls: unable to stat %s: %s\n", path, strerror(errno));
@ -23,53 +33,77 @@ int list(const char *path, int flag, int label) {
printf("\n%s: \n", path);
/* Open and print dir */
struct dirent *ep;
DIR *dp = opendir(path);
if (dp == NULL) {
fprintf(stderr, "ls: %s: %s\n", path, strerror(errno));
return 1;
}
struct dirent *ep;
while ((ep = readdir(dp)) != NULL) {
if (ep->d_name[0] == '.' && !flag)
if (ep->d_name[0] == '.' && !a_flag)
continue;
if (l_flag) {
struct stat sb;
if (lstat(ep->d_name, &sb) == -1) {
fprintf(stderr, "ls: lstat()\n");
return 1;
}
/* Permissions */
PrintPerm(sb);
/* Date and other info */
struct tm *tm = localtime(&sb.st_mtime);
char date[14];
if (strftime(date, sizeof(date), "%b %d %H:%M", tm) == 0) {
fprintf(stderr, "ls: strftime()\n");
return 1;
}
printf(" %jd %jd %s ", (uintmax_t)sb.st_mode, (uintmax_t)sb.st_size, date);
}
printf("%s ", ep->d_name);
printf("\n");
}
closedir(dp);
printf("\n");
return 0;
}
int main(const int argc, const char **argv) {
int flag = 0;
int i;
for (i = 1; i < argc; i++) {
if (argv[i][0] != '-')
break;
else if (!strcmp(argv[i], "-a"))
flag = 1;
a_flag = 1;
else if (!strcmp(argv[i], "-l"))
l_flag = 1;
else if (!strcmp(argv[i], "-h")) {
printf("ls [-a (Show hidden files)] [Path]\n");
printf("ls [-a (Show hidden files)] [-l (use a long listing format (month / day / hour:min))] [Path]\n");
return 0;
}
}
if (i == argc)
return list(".", flag, 0);
return list(".", 0);
if (i == argc - 1)
return list(argv[i], flag, 0);
return list(argv[i], 0);
else
for (int i = 1; i < argc; i++)
if (list(argv[i], flag, 1))
if (list(argv[i], 1))
return 1;
return 0;
}