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/*
* Copyright (C) 2010-2014 Karel Zak <kzak@redhat.com>
*
* This file may be redistributed under the terms of the
* GNU Lesser General Public License.
*/
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <getopt.h>
#include "c.h"
#include "nls.h"
#include "strutils.h"
#include "libsmartcols.h"
static int add_children(struct libscols_table *tb,
struct libscols_line *ln, int fd);
enum { COL_MODE, COL_SIZE, COL_NAME };
/* add columns to the @tb */
static void setup_columns(struct libscols_table *tb, int notree)
{
if (!scols_table_new_column(tb, "MODE", 0.3, 0))
goto fail;
if (!scols_table_new_column(tb, "SIZE", 5, SCOLS_FL_RIGHT))
goto fail;
if (!scols_table_new_column(tb, "NAME", 0.5,
(notree ? 0 : SCOLS_FL_TREE) | SCOLS_FL_NOEXTREMES))
goto fail;
return;
fail:
scols_unref_table(tb);
err(EXIT_FAILURE, "failed to create output columns");
}
/* add a new line to @tb, the content is based on @st */
static int add_line_from_stat(struct libscols_table *tb,
struct libscols_line *parent,
int parent_fd,
struct stat *st,
const char *name)
{
struct libscols_line *ln;
char modbuf[11], *p;
mode_t mode = st->st_mode;
int rc = 0;
ln = scols_table_new_line(tb, parent);
if (!ln)
err(EXIT_FAILURE, "failed to create output line");
/* MODE; local buffer, use scols_line_set_data() that calls strdup() */
xstrmode(mode, modbuf);
if (scols_line_set_data(ln, COL_MODE, modbuf))
goto fail;
/* SIZE; already allocated string, use scols_line_refer_data() */
p = size_to_human_string(0, st->st_size);
if (!p || scols_line_refer_data(ln, COL_SIZE, p))
goto fail;
/* NAME */
if (scols_line_set_data(ln, COL_NAME, name))
goto fail;
/* colors */
if (scols_table_colors_wanted(tb)) {
struct libscols_cell *ce = scols_line_get_cell(ln, COL_NAME);
if (S_ISDIR(mode))
scols_cell_set_color(ce, "blue");
else if (S_ISLNK(mode))
scols_cell_set_color(ce, "cyan");
else if (S_ISBLK(mode))
scols_cell_set_color(ce, "magenta");
else if ((mode & S_IXOTH) || (mode & S_IXGRP) || (mode & S_IXUSR))
scols_cell_set_color(ce, "green");
}
if (S_ISDIR(st->st_mode)) {
int fd;
if (parent_fd >= 0)
fd = openat(parent_fd, name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC);
else
fd = open(name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC);
if (fd >= 0) {
rc = add_children(tb, ln, fd);
close(fd);
}
}
return rc;
fail:
err(EXIT_FAILURE, "failed to create cell data");
return -1;
}
/* read all entries from directory addressed by @fd */
static int add_children(struct libscols_table *tb,
struct libscols_line *ln,
int fd)
{
DIR *dir;
struct dirent *d;
dir = fdopendir(fd);
if (!dir)
return -errno;
while ((d = readdir(dir))) {
struct stat st;
if (strcmp(d->d_name, ".") == 0 || strcmp(d->d_name, "..") == 0)
continue;
if (fstatat(fd, d->d_name, &st, AT_SYMLINK_NOFOLLOW) != 0)
continue;
add_line_from_stat(tb, ln, fd, &st, d->d_name);
}
closedir(dir);
return 0;
}
static void add_lines(struct libscols_table *tb, const char *dirname)
{
struct stat st;
if (lstat(dirname, &st))
err(EXIT_FAILURE, "%s", dirname);
add_line_from_stat(tb, NULL, -1, &st, dirname);
}
static void __attribute__((__noreturn__)) usage(FILE *out)
{
fprintf(out, " %s [options] [<dir> ...]\n\n", program_invocation_short_name);
fputs(" -c, --csv display a csv-like output\n", out);
fputs(" -i, --ascii use ascii characters only\n", out);
fputs(" -l, --list use list format output\n", out);
fputs(" -n, --noheadings don't print headings\n", out);
fputs(" -p, --pairs use key=\"value\" output format\n", out);
fputs(" -J, --json use JSON output format\n", out);
fputs(" -r, --raw use raw output format\n", out);
fputs(" -S, --range-start <n> first line to print\n", out);
fputs(" -E, --range-end <n> last line to print\n", out);
exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
}
int main(int argc, char *argv[])
{
struct libscols_table *tb;
int c, notree = 0, nstart = -1, nend = -1;
static const struct option longopts[] = {
{ "ascii", 0, NULL, 'i' },
{ "csv", 0, NULL, 'c' },
{ "list", 0, NULL, 'l' },
{ "noheadings", 0, NULL, 'n' },
{ "pairs", 0, NULL, 'p' },
{ "json", 0, NULL, 'J' },
{ "raw", 0, NULL, 'r' },
{ "range-start",1, NULL, 'S' },
{ "range-end", 1, NULL, 'E' },
{ NULL, 0, NULL, 0 },
};
setlocale(LC_ALL, ""); /* just to have enable UTF8 chars */
scols_init_debug(0);
tb = scols_new_table();
if (!tb)
err(EXIT_FAILURE, "failed to create output table");
while((c = getopt_long(argc, argv, "ciJlnprS:E:", longopts, NULL)) != -1) {
switch(c) {
case 'c':
scols_table_set_column_separator(tb, ",");
scols_table_enable_raw(tb, 1);
notree = 1;
break;
case 'i':
scols_table_enable_ascii(tb, 1);
break;
case 'J':
scols_table_set_name(tb, "scolstest");
scols_table_enable_json(tb, 1);
break;
case 'l':
notree = 1;
break;
case 'n':
scols_table_enable_noheadings(tb, 1);
break;
case 'p':
scols_table_enable_export(tb, 1);
notree = 1;
break;
case 'r':
scols_table_enable_raw(tb, 1);
notree = 1;
break;
case 'S':
nstart = strtos32_or_err(optarg, "failed to parse range start") - 1;
break;
case 'E':
nend = strtos32_or_err(optarg, "failed to parse range end") - 1;
break;
default:
usage(stderr);
}
}
scols_table_enable_colors(tb, isatty(STDOUT_FILENO));
setup_columns(tb, notree);
if (optind == argc)
add_lines(tb, ".");
else while (optind < argc)
add_lines(tb, argv[optind++]);
if (nstart >= 0 || nend >= 0) {
/* print subset */
struct libscols_line *start = NULL, *end = NULL;
if (nstart >= 0)
start = scols_table_get_line(tb, nstart);
if (nend >= 0)
end = scols_table_get_line(tb, nend);
if (start || end)
scols_table_print_range(tb, start, end);
} else
/* print all table */
scols_print_table(tb);
scols_unref_table(tb);
return EXIT_SUCCESS;
}
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