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use array of lines in usage
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@toy
toy committed Mar 3, 2020
1 parent af833ff commit 958c979
Showing 1 changed file with 53 additions and 47 deletions.
100 changes: 53 additions & 47 deletions blueutil.m
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Original file line number Diff line number Diff line change
Expand Up @@ -59,53 +59,59 @@ bool BTSetDiscoverableState(int state) {
#define io_puts(io, string) fputs (string"\n", io)

void usage(FILE *io) {
io_puts(io, "blueutil v" VERSION);
io_puts(io, "");
io_puts(io, "Usage:");
io_puts(io, " blueutil [options]");
io_puts(io, "");
io_puts(io, "Without options outputs current state");
io_puts(io, "");
io_puts(io, " -p, --power output power state as 1 or 0");
io_puts(io, " -p, --power STATE set power state");
io_puts(io, " -d, --discoverable output discoverable state as 1 or 0");
io_puts(io, " -d, --discoverable STATE set discoverable state");
io_puts(io, "");
io_puts(io, " --favourites list favourite devices");
io_puts(io, " --inquiry [T] inquiry devices in range, 10 seconds duration by default excluding time for name updates");
io_puts(io, " --paired list paired devices");
io_puts(io, " --recent [N] list recently used devices, 10 by default");
io_puts(io, "");
io_puts(io, " --info ID show information about device");
io_puts(io, " --is-connected ID connected state of device as 1 or 0");
io_puts(io, " --connect ID create a connection to device");
io_puts(io, " --disconnect ID close the connection to device");
io_puts(io, " --pair ID [PIN] pair with device, optional PIN of up to 16 characters will be used instead of interactive input if requested in specific pair mode");
io_puts(io, " --add-favourite ID add to favourites");
io_puts(io, " --remove-favourite ID remove from favourites");
io_puts(io, "");
io_puts(io, " --format FORMAT change output format of info and all listing commands");
io_puts(io, "");
io_puts(io, " --wait-connect ID [TIMEOUT]");
io_puts(io, " EXPERIMENTAL wait for device to connect");
io_puts(io, " --wait-disconnect ID [TIMEOUT]");
io_puts(io, " EXPERIMENTAL wait for device to disconnect");
io_puts(io, " --wait-rssi ID OP VALUE [PERIOD [TIMEOUT]]");
io_puts(io, " EXPERIMENTAL wait for device RSSI value which is 0 for golden range, -129 if it cannot be read (e.g. device is disconnected)");
io_puts(io, "");
io_puts(io, " -h, --help this help");
io_puts(io, " -v, --version show version");
io_puts(io, "");
io_puts(io, "STATE can be one of: 1, on, 0, off, toggle");
io_puts(io, "ID can be either address in form xxxxxxxxxxxx, xx-xx-xx-xx-xx-xx or xx:xx:xx:xx:xx:xx, or name of device to search in used devices");
io_puts(io, "OP can be one of: >, >=, <, <=, =, !=; or equivalents: gt, ge, lt, le, eq, ne");
io_puts(io, "PERIOD is in seconds, defaults to 1");
io_puts(io, "TIMEOUT is in seconds, default value 0 doesn't add timeout");
io_puts(io, "FORMAT can be one of:");
io_puts(io, " default - human readable text output not intended for consumption by scripts");
io_puts(io, " new-default - human readable comma separated key-value pairs (EXPERIMENTAL, THE BEHAVIOUR MAY CHANGE)");
io_puts(io, " json - compact JSON");
io_puts(io, " json-pretty - pretty printed JSON");
static const char* lines[] = {
"blueutil v" VERSION,
"",
"Usage:",
" blueutil [options]",
"",
"Without options outputs current state",
"",
" -p, --power output power state as 1 or 0",
" -p, --power STATE set power state",
" -d, --discoverable output discoverable state as 1 or 0",
" -d, --discoverable STATE set discoverable state",
"",
" --favourites list favourite devices",
" --inquiry [T] inquiry devices in range, 10 seconds duration by default excluding time for name updates",
" --paired list paired devices",
" --recent [N] list recently used devices, 10 by default",
"",
" --info ID show information about device",
" --is-connected ID connected state of device as 1 or 0",
" --connect ID create a connection to device",
" --disconnect ID close the connection to device",
" --pair ID [PIN] pair with device, optional PIN of up to 16 characters will be used instead of interactive input if requested in specific pair mode",
" --add-favourite ID add to favourites",
" --remove-favourite ID remove from favourites",
"",
" --format FORMAT change output format of info and all listing commands",
"",
" --wait-connect ID [TIMEOUT]",
" EXPERIMENTAL wait for device to connect",
" --wait-disconnect ID [TIMEOUT]",
" EXPERIMENTAL wait for device to disconnect",
" --wait-rssi ID OP VALUE [PERIOD [TIMEOUT]]",
" EXPERIMENTAL wait for device RSSI value which is 0 for golden range, -129 if it cannot be read (e.g. device is disconnected)",
"",
" -h, --help this help",
" -v, --version show version",
"",
"STATE can be one of: 1, on, 0, off, toggle",
"ID can be either address in form xxxxxxxxxxxx, xx-xx-xx-xx-xx-xx or xx:xx:xx:xx:xx:xx, or name of device to search in used devices",
"OP can be one of: >, >=, <, <=, =, !=; or equivalents: gt, ge, lt, le, eq, ne",
"PERIOD is in seconds, defaults to 1",
"TIMEOUT is in seconds, default value 0 doesn't add timeout",
"FORMAT can be one of:",
" default - human readable text output not intended for consumption by scripts",
" new-default - human readable comma separated key-value pairs (EXPERIMENTAL, THE BEHAVIOUR MAY CHANGE)",
" json - compact JSON",
" json-pretty - pretty printed JSON",
};

for (size_t i = 0, _i = sizeof(lines) / sizeof(lines[0]); i < _i; i++) {
fprintf(io, "%s\n", lines[i]);
}
}

char *next_arg(int argc, char *argv[], bool required) {
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