improve ls command
This commit is contained in:
parent
4e3e5f2990
commit
3b53b4c96d
3 changed files with 244 additions and 118 deletions
|
|
@ -6,6 +6,7 @@
|
|||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <sys/stat.h>
|
||||
#include <sys/ioctl.h>
|
||||
#include <unistd.h>
|
||||
#include <dirent.h>
|
||||
#include <ftw.h>
|
||||
|
|
@ -26,6 +27,28 @@ struct Flags {
|
|||
bool recurse;
|
||||
};
|
||||
|
||||
struct FileInfo {
|
||||
char mode[11];
|
||||
int links;
|
||||
struct passwd* usr;
|
||||
struct group* grp;
|
||||
char size[5];
|
||||
char date[13];
|
||||
struct dirent* file;
|
||||
bool set_uid;
|
||||
bool set_gid;
|
||||
bool exec;
|
||||
};
|
||||
|
||||
struct FileListInfo {
|
||||
int max_link;
|
||||
int max_usr;
|
||||
int max_grp;
|
||||
int max_size;
|
||||
int max_name;
|
||||
int total_len;
|
||||
};
|
||||
|
||||
static DIR* get_directory(char* path) {
|
||||
DIR* d = opendir(path);
|
||||
if (d == NULL) {
|
||||
|
|
@ -44,114 +67,152 @@ static void append_path(char buf[PATH_MAX], const char* dir_path, const struct d
|
|||
memcpy(buf + dir_len, file->d_name, strlen(file->d_name) + 1);
|
||||
}
|
||||
|
||||
static void list_file(struct dirent* file, struct Flags* flags, const char* dir_path) {
|
||||
static bool get_file_info(struct dirent* file, const char* dir_path, struct FileInfo* info) {
|
||||
|
||||
char* color;
|
||||
uid_t uid = getuid();
|
||||
gid_t gid = getgid();
|
||||
|
||||
if (file->d_type == DT_DIR) {
|
||||
color = DIR_COLOR;
|
||||
} else if (file->d_type == DT_LNK) {
|
||||
color = LINK_COLOR;
|
||||
} else {
|
||||
color = FILE_COLOR;
|
||||
char buf[PATH_MAX];
|
||||
append_path(buf, dir_path, file);
|
||||
|
||||
struct stat s;
|
||||
if (stat(buf, &s) < 0) {
|
||||
printf("\x1b[0merror: failed to read file '%s': %s\n", buf, strerror(errno));
|
||||
return false;
|
||||
}
|
||||
|
||||
if (flags->more_info) {
|
||||
info->set_uid = false;
|
||||
info->set_gid = false;
|
||||
info->exec = false;
|
||||
|
||||
uid_t uid = getuid();
|
||||
gid_t gid = getgid();
|
||||
if (file->d_type == DT_DIR)
|
||||
info->mode[0] = 'd';
|
||||
else if (file->d_type == DT_LNK)
|
||||
info->mode[0] = 'l';
|
||||
else
|
||||
info->mode[0] = '-';
|
||||
|
||||
char buf[PATH_MAX];
|
||||
append_path(buf, dir_path, file);
|
||||
|
||||
struct stat s;
|
||||
if (stat(buf, &s) < 0) {
|
||||
printf("\x1b[0merror: failed to read file '%s': %s\n", buf, strerror(errno));
|
||||
return;
|
||||
}
|
||||
|
||||
if (file->d_type == DT_DIR) putchar('d');
|
||||
else if (file->d_type == DT_LNK) putchar('l');
|
||||
else putchar('-');
|
||||
|
||||
bool group_sticky = false;
|
||||
bool user_sticky = false;
|
||||
bool exectuable = false;
|
||||
|
||||
putchar((s.st_mode & S_IRUSR) ? 'r' : '-');
|
||||
putchar((s.st_mode & S_IWUSR) ? 'w' : '-');
|
||||
if (s.st_mode & S_IXUSR) {
|
||||
if (putchar(s.st_mode & S_ISUID)) {
|
||||
putchar('s');
|
||||
user_sticky = true;
|
||||
} else {
|
||||
putchar('x');
|
||||
}
|
||||
if (!exectuable) exectuable = s.st_uid == uid;
|
||||
info->mode[1] = (s.st_mode & S_IRUSR) ? 'r' : '-';
|
||||
info->mode[2] = (s.st_mode & S_IWUSR) ? 'w' : '-';
|
||||
if (s.st_mode & S_IXUSR) {
|
||||
if (s.st_mode & S_ISUID) {
|
||||
info->mode[3] = 's';
|
||||
info->set_uid = true;
|
||||
} else {
|
||||
putchar('-');
|
||||
info->mode[3] = 'x';
|
||||
}
|
||||
|
||||
putchar((s.st_mode & S_IRGRP) ? 'r' : '-');
|
||||
putchar((s.st_mode & S_IWGRP) ? 'w' : '-');
|
||||
if (s.st_mode & S_IXGRP) {
|
||||
if (putchar(s.st_mode & S_ISGID)) {
|
||||
putchar('s');
|
||||
group_sticky = true;
|
||||
} else {
|
||||
putchar('x');
|
||||
}
|
||||
if (!exectuable) exectuable = s.st_gid == gid;
|
||||
} else {
|
||||
putchar('-');
|
||||
}
|
||||
|
||||
putchar((s.st_mode & S_IROTH) ? 'r' : '-');
|
||||
putchar((s.st_mode & S_IWOTH) ? 'w' : '-');
|
||||
if (s.st_mode & S_IXOTH) {
|
||||
putchar('x');
|
||||
exectuable = true;
|
||||
} else {
|
||||
putchar('-');
|
||||
}
|
||||
|
||||
printf(" %ld\t", s.st_nlink);
|
||||
|
||||
struct passwd* passwd = getpwuid(s.st_uid);
|
||||
struct group* group = getgrgid(s.st_gid);
|
||||
|
||||
printf("%s ", passwd->pw_name);
|
||||
printf("%s ", group->gr_name);
|
||||
|
||||
print_file_size(s.st_size);
|
||||
print_date_time(s.st_mtim.tv_sec + s.st_mtim.tv_nsec / 1000000);
|
||||
|
||||
if (file->d_type == DT_REG) {
|
||||
if (user_sticky) {
|
||||
color = SET_UID_COLOR;
|
||||
} else if (group_sticky) {
|
||||
color = SET_GID_COLOR;
|
||||
} else if (exectuable) {
|
||||
color = EXEC_COLOR;
|
||||
}
|
||||
}
|
||||
|
||||
printf("%s%s\x1b[0m", color, file->d_name);
|
||||
|
||||
if (file->d_type == DT_LNK) {
|
||||
char link[PATH_MAX];
|
||||
if (readlink(buf, link, PATH_MAX) < 0) {
|
||||
printf("\n");
|
||||
} else {
|
||||
printf(" -> %s\n", link);
|
||||
}
|
||||
} else {
|
||||
printf("\n");
|
||||
}
|
||||
|
||||
if (!info->exec) info->exec = s.st_uid == uid;
|
||||
} else {
|
||||
printf("%s%s", color, file->d_name);
|
||||
flags->one_column ? putchar('\n') : putchar(' ');
|
||||
info->mode[3] = '-';
|
||||
}
|
||||
|
||||
info->mode[4] = (s.st_mode & S_IRGRP) ? 'r' : '-';
|
||||
info->mode[5] = (s.st_mode & S_IWGRP) ? 'w' : '-';
|
||||
if (s.st_mode & S_IXGRP) {
|
||||
if (s.st_mode & S_ISGID) {
|
||||
info->mode[6] = 's';
|
||||
info->set_gid = true;
|
||||
} else {
|
||||
info->mode[6] = 'x';
|
||||
}
|
||||
if (!info->exec) info->exec = s.st_gid == gid;
|
||||
} else {
|
||||
info->mode[6] = '-';
|
||||
}
|
||||
|
||||
info->mode[7] = (s.st_mode & S_IROTH) ? 'r' : '-';
|
||||
info->mode[8] = (s.st_mode & S_IWOTH) ? 'w' : '-';
|
||||
if (s.st_mode & S_IXOTH) {
|
||||
info->mode[9] = 'x';
|
||||
info->exec = true;
|
||||
} else {
|
||||
info->mode[9] = '-';
|
||||
}
|
||||
|
||||
info->mode[10] = '\0';
|
||||
|
||||
info->usr = getpwuid(s.st_uid);
|
||||
info->grp = getgrgid(s.st_gid);
|
||||
info->file = file;
|
||||
info->links = s.st_nlink;
|
||||
|
||||
print_file_size(s.st_size, info->size);
|
||||
print_date_time(s.st_mtim.tv_sec + s.st_mtim.tv_nsec / 1000000, info->date);
|
||||
return true;
|
||||
}
|
||||
|
||||
static char* get_file_color(struct FileInfo* info) {
|
||||
char* color;
|
||||
if (info->file->d_type == DT_DIR) {
|
||||
color = DIR_COLOR;
|
||||
} else if (info->file->d_type == DT_LNK) {
|
||||
color = LINK_COLOR;
|
||||
} else {
|
||||
if (info->set_uid) {
|
||||
color = SET_UID_COLOR;
|
||||
} else if (info->set_gid) {
|
||||
color = SET_GID_COLOR;
|
||||
} else if (info->exec) {
|
||||
color = EXEC_COLOR;
|
||||
} else {
|
||||
color = FILE_COLOR;
|
||||
}
|
||||
}
|
||||
return color;
|
||||
}
|
||||
|
||||
static void list_files(struct FileInfo* files, int file_len, struct FileListInfo info, struct Flags* flags, const char* dir_path) {
|
||||
|
||||
struct winsize w;
|
||||
ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
|
||||
|
||||
char* color;
|
||||
const int column_width = info.max_name + 1;
|
||||
const int row_count = w.ws_col / column_width;
|
||||
|
||||
for (int i = 0; i < file_len; i++) {
|
||||
struct FileInfo finfo = files[i];
|
||||
if (strlen(finfo.file->d_name) < 1) continue;
|
||||
color = get_file_color(&finfo);
|
||||
if (flags->more_info) {
|
||||
printf("%s %*d %*s %*s %*s %s %s%s\x1b[0m",
|
||||
finfo.mode,
|
||||
info.max_link,
|
||||
finfo.links,
|
||||
info.max_usr,
|
||||
finfo.usr->pw_name,
|
||||
info.max_grp,
|
||||
finfo.grp->gr_name,
|
||||
info.max_size,
|
||||
finfo.size,
|
||||
finfo.date,
|
||||
color,
|
||||
finfo.file->d_name
|
||||
);
|
||||
if (finfo.file->d_type == DT_LNK) {
|
||||
char path[PATH_MAX];
|
||||
append_path(path, dir_path, finfo.file);
|
||||
|
||||
char lnk[PATH_MAX];
|
||||
if (readlink(path, lnk, PATH_MAX) < 0) {
|
||||
putchar('\n');
|
||||
} else {
|
||||
printf(" -> %s\n", lnk);
|
||||
}
|
||||
|
||||
} else {
|
||||
putchar('\n');
|
||||
}
|
||||
} else if (flags->one_column) {
|
||||
printf("%s%s\x1b[0m\n", color, finfo.file->d_name);
|
||||
} else {
|
||||
if (info.total_len > w.ws_col) {
|
||||
if (i != 0 && i % row_count == 0) putchar('\n');
|
||||
printf("%s%*s\x1b[0m", color, column_width, finfo.file->d_name);
|
||||
} else {
|
||||
printf("%s%s\x1b[0m ", color, finfo.file->d_name);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -159,6 +220,53 @@ static bool is_dot_dir(const char* path) {
|
|||
return streql(path, ".") || streql(path, "..");
|
||||
}
|
||||
|
||||
static int num_places (int n) {
|
||||
int r = 1;
|
||||
if (n < 0) n = (n == INT_MIN) ? INT_MAX: -n;
|
||||
while (n > 9) {
|
||||
n /= 10;
|
||||
r++;
|
||||
}
|
||||
return r;
|
||||
}
|
||||
|
||||
static void push_file(
|
||||
struct FileInfo** files,
|
||||
struct FileListInfo* info,
|
||||
int* size, int* capacity,
|
||||
struct dirent* file,
|
||||
const char* dir_path
|
||||
) {
|
||||
|
||||
struct FileInfo finfo;
|
||||
if (!get_file_info(file, dir_path, &finfo)) return;
|
||||
|
||||
if (*size == *capacity) {
|
||||
*capacity *= 2;
|
||||
*files = realloc(*files, sizeof(struct FileInfo) * *capacity);
|
||||
}
|
||||
|
||||
int user_len = strlen(finfo.usr->pw_name);
|
||||
if (user_len > info->max_usr) info->max_usr = user_len;
|
||||
|
||||
int group_len = strlen(finfo.grp->gr_name);
|
||||
if (group_len > info->max_grp) info->max_grp = group_len;
|
||||
|
||||
int name_len = strlen(file->d_name);
|
||||
if (name_len > info->max_name) info->max_name = name_len;
|
||||
|
||||
int size_len = strlen(finfo.size);
|
||||
if (size_len > info->max_size) info->max_size = size_len;
|
||||
|
||||
int link_len = num_places(finfo.links);
|
||||
if (link_len > info->max_link) info->max_link = link_len;
|
||||
|
||||
info->total_len += name_len + 2;
|
||||
|
||||
(*files)[*size] = finfo;
|
||||
(*size)++;
|
||||
}
|
||||
|
||||
static void recurse_directory(char* path, struct Flags* flags) {
|
||||
DIR* d;
|
||||
struct dirent* file;
|
||||
|
|
@ -167,6 +275,12 @@ static void recurse_directory(char* path, struct Flags* flags) {
|
|||
d = get_directory(path);
|
||||
if (d == NULL) return;
|
||||
|
||||
int capacity = 8;
|
||||
int size = 0;
|
||||
struct FileInfo* files = malloc(sizeof(struct FileInfo) * capacity);
|
||||
struct FileListInfo info;
|
||||
memset(&info, 0, sizeof(struct FileListInfo));
|
||||
|
||||
while((file = readdir(d)) != NULL) {
|
||||
if (file->d_type == DT_DIR) continue;
|
||||
if (!flags->hidden && prefix(".", file->d_name)) continue;
|
||||
|
|
@ -175,9 +289,12 @@ static void recurse_directory(char* path, struct Flags* flags) {
|
|||
printf("\n%s%s:%s\n", DIR_COLOR, path, FILE_COLOR);
|
||||
first = false;
|
||||
}
|
||||
list_file(file, flags, path);
|
||||
push_file(&files, &info, &size, &capacity, file, path);
|
||||
}
|
||||
|
||||
list_files(files, size, info, flags, path);
|
||||
free(files);
|
||||
|
||||
if (!flags->more_info) printf("\n");
|
||||
|
||||
closedir(d);
|
||||
|
|
@ -206,14 +323,22 @@ static void list_directory(char* path, struct Flags* flags) {
|
|||
DIR* d = get_directory(path);
|
||||
if (d == NULL) return;
|
||||
|
||||
struct dirent* file;
|
||||
int capacity = 8;
|
||||
int size = 0;
|
||||
struct FileInfo* files = malloc(sizeof(struct FileInfo) * capacity);
|
||||
struct FileListInfo info;
|
||||
memset(&info, 0, sizeof(struct FileListInfo));
|
||||
|
||||
struct dirent* file;
|
||||
while ((file = readdir(d)) != NULL) {
|
||||
if (!flags->hidden && prefix(".", file->d_name)) continue;
|
||||
if (flags->hide_dot && is_dot_dir(file->d_name)) continue;
|
||||
list_file(file, flags, path);
|
||||
push_file(&files, &info, &size, &capacity, file, path);
|
||||
}
|
||||
|
||||
list_files(files, size, info, flags, path);
|
||||
free(files);
|
||||
|
||||
closedir(d);
|
||||
}
|
||||
|
||||
|
|
|
|||
27
src/shared.c
27
src/shared.c
|
|
@ -47,7 +47,7 @@ bool prefix(const char* pre, const char* str) {
|
|||
}
|
||||
|
||||
static char fs_types[5] = {'K','M','G','T','P'};
|
||||
void print_file_size(size_t bytes) {
|
||||
void print_file_size(size_t bytes, char buf[5]) {
|
||||
int index = 0;
|
||||
float next = bytes;
|
||||
while (true) {
|
||||
|
|
@ -62,24 +62,25 @@ void print_file_size(size_t bytes) {
|
|||
index++;
|
||||
}
|
||||
|
||||
if (next/100 < 1) putchar(' ');
|
||||
if (next/10 < 1) putchar(' ');
|
||||
if (index == 0) putchar(' ');
|
||||
|
||||
printf("%u", (int)(next+.5));
|
||||
int n = snprintf(buf, 4, "%u", (int)(next+.5));
|
||||
if (index > 0) {
|
||||
putchar(fs_types[index - 1]);
|
||||
buf[n] = (fs_types[index - 1]);
|
||||
n++;
|
||||
}
|
||||
putchar(' ');
|
||||
buf[n] = '\0';
|
||||
}
|
||||
|
||||
static char* months[12] =
|
||||
{"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
|
||||
void print_date_time(time_t mills) {
|
||||
void print_date_time(time_t mills, char buf[13]) {
|
||||
struct tm* info;
|
||||
info = localtime(&mills);
|
||||
printf("%s ", months[info->tm_mon]);
|
||||
if (info->tm_mday < 10)
|
||||
printf(" ");
|
||||
printf("%d %02d:%02d ", info->tm_mday, info->tm_hour, info->tm_sec);
|
||||
int n = snprintf(buf, 5, "%s ", months[info->tm_mon]);
|
||||
|
||||
if (info->tm_mday < 10) {
|
||||
buf[n] = ' ';
|
||||
n++;
|
||||
}
|
||||
|
||||
snprintf(buf + n, 13 - n, "%d %02d:%02d ", info->tm_mday, info->tm_hour, info->tm_sec);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -13,5 +13,5 @@ long int get_number(const char* text);
|
|||
bool streql(const char* a, const char* b);
|
||||
bool prefix(const char* pre, const char* str);
|
||||
|
||||
void print_file_size(size_t bytes);
|
||||
void print_date_time(time_t mills);
|
||||
void print_file_size(size_t bytes, char buf[5]);
|
||||
void print_date_time(time_t mills, char buf[13]);
|
||||
|
|
|
|||
Loading…
Reference in a new issue