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util: nicer tree drawings 

Draw trees more similar to pstree/findmnt/lsblk/...
This commit is contained in:
Michal Schmidt 2012-11-12 22:27:48 +01:00
parent a9cdc94f7f
commit 45a5ff0de7
4 changed files with 23 additions and 23 deletions
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10
src/login/sysfs-show.c
View File

@ -105,8 +105,8 @@ static int show_sysfs_one(
}
k = ellipsize(sysfs, n_columns, 20);
printf("%s%s %s\n", prefix, draw_special_char(lookahead ? DRAW_BOX_VERT_AND_RIGHT : DRAW_BOX_UP_AND_RIGHT),
k ? k : sysfs);
printf("%s%s%s\n", prefix, draw_special_char(lookahead ? DRAW_TREE_BRANCH : DRAW_TREE_RIGHT),
k ? k : sysfs);
free(k);
if (asprintf(&l,
@ -118,8 +118,8 @@ static int show_sysfs_one(
}
k = ellipsize(l, n_columns, 70);
printf("%s%s %s\n", prefix, lookahead ? draw_special_char(DRAW_BOX_VERT) : " ",
k ? k : l);
printf("%s%s%s\n", prefix, lookahead ? draw_special_char(DRAW_TREE_VERT) : " ",
k ? k : l);
free(k);
free(l);
@ -127,7 +127,7 @@ static int show_sysfs_one(
if (*item) {
char *p;
p = strjoin(prefix, lookahead ? draw_special_char(DRAW_BOX_VERT) : " ", " ", NULL);
p = strappend(prefix, lookahead ? draw_special_char(DRAW_TREE_VERT) : " ");
show_sysfs_one(udev, seat, item, sysfs, p ? p : prefix, n_columns - 2);
free(p);
}

14
src/shared/cgroup-show.c
View File

@ -86,10 +86,10 @@ static void show_pid_array(int pids[], unsigned n_pids, const char *prefix, unsi
get_process_cmdline(pids[i], n_columns, true, &t);
printf("%s%s %*lu %s\n",
printf("%s%s%*lu %s\n",
prefix,
draw_special_char(extra ? DRAW_TRIANGULAR_BULLET :
((more || i < n_pids-1) ? DRAW_BOX_VERT_AND_RIGHT : DRAW_BOX_UP_AND_RIGHT)),
((more || i < n_pids-1) ? DRAW_TREE_BRANCH : DRAW_TREE_RIGHT)),
pid_width,
(unsigned long) pids[i],
strna(t));
@ -208,11 +208,11 @@ int show_cgroup_by_path(const char *path, const char *prefix, unsigned n_columns
}
if (last) {
printf("%s%s %s\n", prefix, draw_special_char(DRAW_BOX_VERT_AND_RIGHT),
path_get_file_name(last));
printf("%s%s%s\n", prefix, draw_special_char(DRAW_TREE_BRANCH),
path_get_file_name(last));
if (!p1) {
p1 = strjoin(prefix, draw_special_char(DRAW_BOX_VERT), " ", NULL);
p1 = strappend(prefix, draw_special_char(DRAW_TREE_VERT));
if (!p1) {
free(k);
r = -ENOMEM;
@ -234,8 +234,8 @@ int show_cgroup_by_path(const char *path, const char *prefix, unsigned n_columns
show_cgroup_one_by_path(path, prefix, n_columns, !!last, kernel_threads);
if (last) {
printf("%s%s %s\n", prefix, draw_special_char(DRAW_BOX_UP_AND_RIGHT),
path_get_file_name(last));
printf("%s%s%s\n", prefix, draw_special_char(DRAW_TREE_RIGHT),
path_get_file_name(last));
if (!p2) {
p2 = strappend(prefix, " ");

16
src/shared/util.c
View File

@ -6148,16 +6148,16 @@ out:
const char *draw_special_char(DrawSpecialChar ch) {
static const char *draw_table[2][_DRAW_SPECIAL_CHAR_MAX] = {
/* UTF-8 */ {
[DRAW_BOX_VERT] = "\342\224\202", /* │ */
[DRAW_BOX_VERT_AND_RIGHT] = "\342\224\234", /* ├ */
[DRAW_BOX_UP_AND_RIGHT] = "\342\224\224", /* └ */
[DRAW_TRIANGULAR_BULLET] = "\342\200\243", /* ‣ */
[DRAW_TREE_VERT] = "\342\224\202 ", /* │ */
[DRAW_TREE_BRANCH] = "\342\224\234\342\224\200", /* ├─ */
[DRAW_TREE_RIGHT] = "\342\224\224\342\224\200", /* └─ */
[DRAW_TRIANGULAR_BULLET] = "\342\200\243 ", /* ‣ */
},
/* ASCII fallback */ {
[DRAW_BOX_VERT] = "|",
[DRAW_BOX_VERT_AND_RIGHT] = "+",
[DRAW_BOX_UP_AND_RIGHT] = "\\",
[DRAW_TRIANGULAR_BULLET] = ">",
[DRAW_TREE_VERT] = "| ",
[DRAW_TREE_BRANCH] = "|-",
[DRAW_TREE_RIGHT] = "`-",
[DRAW_TRIANGULAR_BULLET] = "> ",
}
};

6
src/shared/util.h
View File

@ -604,9 +604,9 @@ void *xbsearch_r(const void *key, const void *base, size_t nmemb, size_t size,
bool is_locale_utf8(void);
typedef enum DrawSpecialChar {
DRAW_BOX_VERT,
DRAW_BOX_VERT_AND_RIGHT,
DRAW_BOX_UP_AND_RIGHT,
DRAW_TREE_VERT,
DRAW_TREE_BRANCH,
DRAW_TREE_RIGHT,
DRAW_TRIANGULAR_BULLET,
_DRAW_SPECIAL_CHAR_MAX
} DrawSpecialChar;