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pw-dot: added -L/--lr for outputting the graph using 'rankdir = "LR"'

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Graphs laid out this way may be look nicer sometimes.
This commit is contained in:
Erkki Seppälä 2021-04-02 11:41:02 +03:00
parent 21a36f3c51
commit 71b53f1590
2 changed files with 19 additions and 2 deletions
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16
src/tools/pw-dot.c
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@ -53,6 +53,7 @@ struct data {
struct spa_list globals;
char *dot_str;
const char *dot_rankdir;
bool show_all;
bool show_smart;
@ -458,6 +459,11 @@ static int draw_graph(struct data *d, const char *path)
/* draw the header */
dot_str_add(&d->dot_str, "digraph pipewire {\n");
if (d->dot_rankdir) {
/* set rank direction, if provided */
dot_str_add(&d->dot_str, "rankdir = \"%s\";\n", d->dot_rankdir);
}
/* iterate the globals */
spa_list_for_each(g, &d->globals, link) {
/* skip null and non-info globals */
@ -757,7 +763,8 @@ static void show_help(const char *name)
" -s, --smart Show linked objects only\n"
" -d, --detail Show all object properties\n"
" -r, --remote Remote daemon name\n"
" -o, --output Output file (Default %s)\n",
" -o, --output Output file (Default %s)\n"
" -L, --lr Use left-right rank direction\n",
name,
DEFAULT_DOT_PATH);
}
@ -776,13 +783,14 @@ int main(int argc, char *argv[])
{ "detail", no_argument, NULL, 'd' },
{ "remote", required_argument, NULL, 'r' },
{ "output", required_argument, NULL, 'o' },
{ "lr", no_argument, NULL, 'L' },
{ NULL, 0, NULL, 0}
};
int c;
pw_init(&argc, &argv);
while ((c = getopt_long(argc, argv, "hVasdr:o:", long_options, NULL)) != -1) {
while ((c = getopt_long(argc, argv, "hVasdr:o:L", long_options, NULL)) != -1) {
switch (c) {
case 'h' :
show_help(argv[0]);
@ -815,6 +823,10 @@ int main(int argc, char *argv[])
dot_path = optarg;
fprintf(stderr, "set output file %s\n", dot_path);
break;
case 'L' :
data.dot_rankdir = "LR";
fprintf(stderr, "set rank direction to LR\n");
break;
default:
show_help(argv[0]);
return -1;