1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
|
/*
* 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 };
struct libscols_column *sort_column;
/* 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;
sort_column = scols_table_new_column(tb, "NAME", 0.5,
(notree ? 0 : SCOLS_FL_TREE) | SCOLS_FL_NOEXTREMES);
if (!sort_column)
goto fail;
scols_column_set_cmpfunc(sort_column, scols_cmpstr_cells, NULL);
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, --sort sort by NAME\n", out);
fputs(" -x, --tree-sort keep tree-like order (also for --list)\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, sort = 0, force_tree_sort = 0;
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' },
{ "sort", 0, NULL, 's' },
{ "tree-sort", 0, NULL, 'x' },
{ 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:sE:x", 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 's':
sort = 1;
break;
case 'E':
nend = strtos32_or_err(optarg, "failed to parse range end") - 1;
break;
case 'x':
force_tree_sort = 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 (sort)
scols_sort_table(tb, sort_column);
if (force_tree_sort)
scols_sort_table_by_tree(tb);
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;
}
|
