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/**
* silly simple example program
*/
#include "cli.h"
CLI_OPT_LONG(distance, 'd', "distance", "the distance (km/miles)");
CLI_OPT_LONG(speed, 's', "speed", "the speed ((km/miles)ph)");
CLI_OPT_LONG(time, 't', "time", "the time (seconds)");
CLI_OPT_FLAG(murica, 'M', "murica", "Use American™ measurements");
int calc_speed(const struct cli_cmd *, const struct cli_ctx *)
{
if (time.value == 0) {
fprintf(stderr, "time cannot be zero\n");
return CLI_RC_BAD_ARGS;
}
double speed = (double)distance.value / ((double)time.value / 3600);
printf("%lf%s\n", speed, murica.value ? "mph" : "km/h");
return CLI_RC_OK;
}
int calc_distance(const struct cli_cmd *, const struct cli_ctx *)
{
double distance = speed.value * ((double)time.value / 3600);
printf("%lf%s\n", distance, murica.value ? "miles" : "km");
return CLI_RC_OK;
}
struct cli_opt *speed_opts[] = {&distance.opt, &time.opt, NULL};
struct cli_opt *distance_opts[] = {&speed.opt, &time.opt, NULL};
const struct cli_cmd my_cmds[] = {
{
.name = "speed",
.desc = "calculate speed",
.help =
"Tell me the distance and the time, and I'll tell you your speed",
.opts = speed_opts,
.run = calc_speed,
},
{
.name = "distance",
.desc = "calculate distance",
.help =
"Tell me the speed and the time, and I'll tell you your distance",
.opts = distance_opts,
.run = calc_distance,
},
{0},
};
struct cli_opt *global_opts[] = {&murica.opt, NULL};
struct cli my_cli = {
.header = "This is an example CLI program",
.footer = "\nCopyright (c) 2025 Yaroslav de la Peña Smirnov "
"<yps@yaroslavps.com>",
.cmds = my_cmds,
.opts = global_opts,
};
int main(int argc, char *argv[])
{
return cli_run(&my_cli, argc, argv);
}
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