Print help to stdout
The output of -h/--help was printed on stderr, although it is not an
error.
Printing on stdout allows to pipe the result directly:
scrcpy --help | less
Instead of (in bash):
scrcpy --help |& less
@@ -675,12 +675,12 @@ print_option_usage_header(const struct sc_option *opt) {
}
}
- fprintf(stderr, "\n %s\n", buf.s);
+ printf("\n %s\n", buf.s);
free(buf.s);
return;
error:
- fprintf(stderr, "<ERROR>\n");
+ printf("<ERROR>\n");
}
static void
@@ -696,11 +696,11 @@ print_option_usage(const struct sc_option *opt, unsigned cols) {
char *text = sc_str_wrap_lines(opt->text, cols, 8);
if (!text) {
- fprintf(stderr, "<ERROR>\n");
+ printf("<ERROR>\n");
return;
}
- fprintf(stderr, "%s\n", text);
+ printf("%s\n", text);
free(text);
}
@@ -711,11 +711,11 @@ print_shortcuts_intro(unsigned cols) {
"(left) Alt or (left) Super, but it can be configured by "
"--shortcut-mod (see above).", cols, 4);
if (!intro) {
- fprintf(stderr, "<ERROR>\n");
+ printf("<ERROR>\n");
return;
}
- fprintf(stderr, "%s\n", intro);
+ printf("%s\n", intro);
free(intro);
}
@@ -725,21 +725,21 @@ print_shortcut(const struct sc_shortcut *shortcut, unsigned cols) {
assert(shortcut->shortcuts[0]); // At least one shortcut
assert(shortcut->text);
- fprintf(stderr, "\n");
+ printf("\n");
unsigned i = 0;
while (shortcut->shortcuts[i]) {
- fprintf(stderr, " %s\n", shortcut->shortcuts[i]);
+ printf(" %s\n", shortcut->shortcuts[i]);
++i;
};
char *text = sc_str_wrap_lines(shortcut->text, cols, 8);
if (!text) {
- fprintf(stderr, "<ERROR>\n");
+ printf("<ERROR>\n");
return;
}
- fprintf(stderr, "%s\n", text);
+ printf("%s\n", text);
free(text);
}
@@ -763,14 +763,14 @@ scrcpy_print_usage(const char *arg0) {
}
}
- fprintf(stderr, "Usage: %s [options]\n\n"
+ printf("Usage: %s [options]\n\n"
"Options:\n", arg0);
for (size_t i = 0; i < ARRAY_LEN(options); ++i) {
print_option_usage(&options[i], cols);
}
// Print shortcuts section
- fprintf(stderr, "\nShortcuts:\n\n");
+ printf("\nShortcuts:\n\n");
print_shortcuts_intro(cols);
for (size_t i = 0; i < ARRAY_LEN(shortcuts); ++i) {
print_shortcut(&shortcuts[i], cols);
