2fc8d92e98
Replace g_options_len and g_opt_str_len extern variables with CLI_OPT_LEN and CLI_OPT_STR_LEN enum constants computed via X-macros. Disables Variable Length Arrays (VLA) by enforcing the use of the -Wvla flag in strict mode.
52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
#include <stddef.h>
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#include <stdio.h>
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#include <getopt.h>
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#include "cli.h"
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#include "cli_opt.h"
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#include "ft_ping.h"
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/* Forward declarations */
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static const char * option_arg_type_to_str(t_option_arg_type type);
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/* -------------------- */
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int
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cli_handle_help(const char *arg, t_ping_config *config)
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{
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(void)config;
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(void)arg;
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printf("ft_ping - Send ICMP ECHO_REQUEST to network hosts\n");
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printf("Usage: ft_ping [options] <destination>\n\n");
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printf("Options:\n");
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for (size_t i = 0; i < CLI_OPT_LEN; ++i)
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{
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const t_option_descriptor *opt = &g_options[i];
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const char *argstr = option_arg_type_to_str(opt->arg_type);
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printf(" -%c, --%-10s %-8s %s\n",
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opt->short_opt,
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opt->long_opt,
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argstr[0] ? argstr : "",
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opt->description
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);
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}
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return CLI_EXIT_SUCCESS;
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}
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static const char *
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option_arg_type_to_str(t_option_arg_type type)
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{
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switch (type)
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{
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case OPT_ARG_NONE: return "";
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case OPT_ARG_INT: return "<NUM>";
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case OPT_ARG_UINT: return "<NUM>";
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case OPT_ARG_SECONDS: return "<SEC>";
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case OPT_ARG_BYTES: return "<SIZE>";
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case OPT_ARG_TTL: return "<TTL>";
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case OPT_ARG_STRING: return "<STR>";
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default: return "<ARG>";
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}
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}
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