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https://github.com/Genymobile/scrcpy
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Adapt help to terminal size
If the error stream is a terminal, and we can retrieve the terminal size, wrap the help content according to the terminal width.
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@ -11,6 +11,7 @@
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#include "util/log.h"
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#include "util/strbuf.h"
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#include "util/str_util.h"
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#include "util/term.h"
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#define STR_IMPL_(x) #x
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#define STR(x) STR_IMPL_(x)
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@ -740,7 +741,23 @@ print_shortcut(const struct sc_shortcut *shortcut, unsigned cols) {
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void
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scrcpy_print_usage(const char *arg0) {
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const unsigned cols = 80; // For now, use a hardcoded value
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#define SC_TERM_COLS_DEFAULT 80
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unsigned cols;
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if (!isatty(STDERR_FILENO)) {
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// Not a tty
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cols = SC_TERM_COLS_DEFAULT;
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} else {
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bool ok = sc_term_get_size(NULL, &cols);
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if (!ok) {
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// Could not get the terminal size
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cols = SC_TERM_COLS_DEFAULT;
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}
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if (cols < 20) {
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// Do not accept a too small value
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cols = 20;
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}
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}
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fprintf(stderr, "Usage: %s [options]\n\n"
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"Options:\n", arg0);
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