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/* SPDX-License-Identifier: MIT-0 */
#include <argp.h>
#include <locale.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#include "deco.h"
#include "schedule.h"
#include "output.h"
#define MOD_OXY (abs_depth(msw_to_bar(6)))
#ifndef VERSION
#define VERSION "unknown version"
#endif
/* argp settings */
static char args_doc[] = "";
static char doc[] = "Implementation of Buhlmann ZH-L16 with Gradient Factors:"
"\vExamples:\n\n"
" ./opendeco -d 18 -t 60 -g Air\n"
" ./opendeco -d 30 -t 60 -g EAN32\n"
" ./opendeco -d 40 -t 120 -g 21/35 -l 20 -h 80 --decogasses Oxygen,EAN50\n";
const char *argp_program_bug_address = "<~tsegers/opendeco@lists.sr.ht> or https://todo.sr.ht/~tsegers/opendeco";
const char *argp_program_version = "opendeco " VERSION;
static struct argp_option options[] = {
{0, 0, 0, 0, "Dive options:", 0},
{"depth", 'd', "NUMBER", 0, "Set the depth of the dive in meters", 0},
{"time", 't', "NUMBER", 0, "Set the time of the dive in minutes", 1},
{"gas", 'g', "STRING", 0, "Set the bottom gas used during the dive, defaults to Air", 2},
{"pressure", 'p', "NUMBER", 0, "Set the surface air pressure, defaults to 1.01325bar or 1atm", 3},
{0, 0, 0, 0, "Deco options:", 0},
{"gflow", 'l', "NUMBER", 0, "Set the gradient factor at the first stop, defaults to 30", 4},
{"gfhigh", 'h', "NUMBER", 0, "Set the gradient factor at the surface, defaults to 75", 5},
{"decogasses", 'G', "LIST", 0, "Set the gasses available for deco", 6},
{0, 's', 0, OPTION_ARG_OPTIONAL, "Only switch gas at deco stops", 7},
{0, '6', 0, OPTION_ARG_OPTIONAL, "Perform last deco stop at 6m", 8},
{0, 0, 0, 0, "Informational options:", 0},
{0, 0, 0, 0, 0, 0}
};
struct arguments {
double depth;
double time;
char *gas;
int gflow;
int gfhigh;
char *decogasses;
double SURFACE_PRESSURE;
int SWITCH_INTERMEDIATE;
int LAST_STOP_AT_SIX;
};
static error_t parse_opt(int key, char *arg, struct argp_state *state)
{
struct arguments *arguments = state->input;
switch (key) {
case 'd':
arguments->depth = arg ? atof(arg) : -1;
break;
case 't':
arguments->time = arg ? atof(arg) : -1;
break;
case 'g':
arguments->gas = arg;
break;
case 'p':
arguments->SURFACE_PRESSURE = arg ? atof(arg) : -1;
break;
case 's':
arguments->SWITCH_INTERMEDIATE = 0;
break;
case '6':
arguments->LAST_STOP_AT_SIX = 1;
break;
case 'G':
arguments->decogasses = arg;
break;
case 'l':
arguments->gflow = arg ? atoi(arg) : 100;
break;
case 'h':
arguments->gfhigh = arg ? atoi(arg) : 100;
break;
case ARGP_KEY_END:
if (arguments->depth < 0 || arguments->time < 0) {
argp_state_help(state, stderr, ARGP_HELP_USAGE);
argp_failure(state, 1, 0, "Options -d and -t are required. See --help for more information");
exit(ARGP_ERR_UNKNOWN);
}
if (arguments->SURFACE_PRESSURE <= 0) {
argp_failure(state, 1, 0, "Surface air pressure must be positive");
exit(ARGP_ERR_UNKNOWN);
}
if (arguments->gflow > arguments->gfhigh) {
argp_failure(state, 1, 0, "GF Low must not be greater than GF High");
exit(ARGP_ERR_UNKNOWN);
}
default:
return ARGP_ERR_UNKNOWN;
}
return 0;
}
static struct argp argp = {options, parse_opt, args_doc, doc, 0, 0, 0};
void print_segment_callback(const decostate_t *ds, const waypoint_t wp, segtype_t type)
{
static double last_depth;
static double runtime;
wchar_t sign;
runtime += wp.time;
if (wp.depth < last_depth)
sign = ASC;
else if (wp.depth > last_depth)
sign = DEC;
else
sign = LVL;
if (type != SEG_TRAVEL)
print_planline(sign, wp.depth, wp.time, runtime, wp.gas);
last_depth = wp.depth;
}
int parse_gasses(gas_t **gasses, char *str)
{
if (!str) {
*gasses = NULL;
return 0;
}
/* count number of gasses in string */
int nof_gasses = 1;
for (int c = 0; str[c]; c++)
if (str[c] == ',')
nof_gasses++;
/* allocate gas array */
gas_t *deco_gasses = malloc(nof_gasses * sizeof(gas_t));
/* fill gas array */
char *gas_str = NULL;
int gas_idx = 0;
while (1) {
if (!gas_str)
gas_str = strtok(str, ",");
else
gas_str = strtok(NULL, ",");
if (!gas_str)
break;
scan_gas(&deco_gasses[gas_idx], gas_str);
gas_idx++;
}
*gasses = deco_gasses;
return nof_gasses;
}
int main(int argc, char *argv[])
{
setlocale(LC_ALL, "en_US.utf8");
/* argp */
struct arguments arguments = {
.depth = -1,
.time = -1,
.gas = "Air",
.gflow = 30,
.gfhigh = 75,
.decogasses = "",
.SURFACE_PRESSURE = SURFACE_PRESSURE_DEFAULT,
.SWITCH_INTERMEDIATE = SWITCH_INTERMEDIATE_DEFAULT,
.LAST_STOP_AT_SIX = LAST_STOP_AT_SIX_DEFAULT,
};
argp_parse(&argp, argc, argv, 0, 0, &arguments);
/* apply global options */
SURFACE_PRESSURE = arguments.SURFACE_PRESSURE;
SWITCH_INTERMEDIATE = arguments.SWITCH_INTERMEDIATE;
LAST_STOP_AT_SIX = arguments.LAST_STOP_AT_SIX;
/* setup */
decostate_t ds;
init_decostate(&ds, arguments.gflow, arguments.gfhigh, msw_to_bar(3));
double dec_per_min = msw_to_bar(9);
gas_t bottom_gas;
scan_gas(&bottom_gas, arguments.gas);
gas_t *deco_gasses;
int nof_gasses = parse_gasses(&deco_gasses, arguments.decogasses);
/* override oxygen mod */
for (int i = 0; i < nof_gasses; i++)
if (gas_o2(&deco_gasses[i]) == 100)
deco_gasses[i].mod = MOD_OXY;
/* simulate dive */
double descent_time = msw_to_bar(arguments.depth) / dec_per_min;
double bottom_time = max(1, arguments.time - descent_time);
waypoint_t waypoints[] = {
{.depth = abs_depth(msw_to_bar(arguments.depth)), .time = descent_time, &bottom_gas},
{.depth = abs_depth(msw_to_bar(arguments.depth)), .time = bottom_time, &bottom_gas},
};
print_planhead();
simulate_dive(&ds, waypoints, len(waypoints), &print_segment_callback);
/* generate deco schedule */
double depth = waypoints[len(waypoints) - 1].depth;
const gas_t *gas = waypoints[len(waypoints) - 1].gas;
/* determine @+5 TTS */
decostate_t ds_ = ds;
add_segment_const(&ds_, depth, 5, gas);
decoinfo_t di_plus5 = calc_deco(&ds_, depth, gas, deco_gasses, nof_gasses, NULL);
/* print actual deco schedule */
decoinfo_t di = calc_deco(&ds, depth, gas, deco_gasses, nof_gasses, &print_segment_callback);
/* output deco info and disclaimer */
wprintf(L"\nNDL: %i TTS: %i TTS @+5: %i\n", (int) floor(di.ndl), (int) ceil(di.tts), (int) ceil(di_plus5.tts));
print_planfoot(&ds);
free(deco_gasses);
return 0;
}
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