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https://github.com/eddyem/stm32samples.git
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121 lines
3.5 KiB
C
121 lines
3.5 KiB
C
/*
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* cmdlnopts.c - the only function that parse cmdln args and returns glob parameters
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*
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* Copyright 2013 Edward V. Emelianoff <eddy@sao.ru>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include "cmdlnopts.h"
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/*
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* here are global parameters initialisation
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*/
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glob_pars G; // internal global parameters structure
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int help = 0; // whether to show help string
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glob_pars Gdefault = {
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.serialdev = "/dev/ttyACM0",
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.gotopos = -1000.,
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.relmove = 0.,
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};
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#ifndef N_
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#define N_(x) (x)
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#endif
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#ifndef _
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#define _(x) (x)
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#endif
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bool get_angle(double *dest, char *src){
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double A = 0., sign = 1.;
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int d,m;
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// printf("arg: %s\n", src);
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if(myatod(&A, src, arg_double)){ // angle in seconds
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*dest = A;
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return true;
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}else if(3 == sscanf(src, "%d:%d:%lf", &d, &m, &A)){
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if(d > -361 && d < 361 && m > -1 && m < 60 && A > -0.1 && A < 60.){
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if(d < 0) sign = -1.;
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*dest = sign*A + sign*60.*m + 3600.*d;
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return true;
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}
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}else if(2 == sscanf(src, "%d:%lf", &m, &A)){
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if(m > -60 && m < 60 && A > -0.1 && A < 60.){
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if(m < 0) sign = -1.;
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*dest = sign*A + 60.*m;
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return true;
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}
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}
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fprintf(stderr, "Wrong angle format [%s], need: ss.ss, mm:ss.ss or dd:mm:ss.ss\n", src);
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return false;
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}
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#ifndef _U_
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#define _U_ __attribute__((__unused__))
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#endif
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bool ang_goto(void *arg, _U_ int N){
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return get_angle(&G.gotopos, arg);
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}
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bool ang_gorel(void *arg, _U_ int N){
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return get_angle(&G.relmove, arg);
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}
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/*
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* Define command line options by filling structure:
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* name has_arg flag val type argptr help
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*/
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myoption cmdlnopts[] = {
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/// "<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>"
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{"help", 0, NULL, 'h', arg_int, APTR(&help), N_("show this help")},
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/// "<22><><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>"
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{"serialdev",1, NULL, 'd', arg_string, APTR(&G.serialdev), N_("path to MCU device")},
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{"goto", 1, NULL, 'g', arg_function,APTR(ang_goto), N_("go to given position")},
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{"relative",1, NULL, 'r', arg_function,APTR(ang_gorel), N_("go relative current position")},
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end_option
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};
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/**
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* Parse command line options and return dynamically allocated structure
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* to global parameters
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* @param argc - copy of argc from main
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* @param argv - copy of argv from main
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* @return allocated structure with global parameters
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*/
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glob_pars *parse_args(int argc, char **argv){
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int i;
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void *ptr;
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ptr = memcpy(&G, &Gdefault, sizeof(G)); assert(ptr);
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// format of help: "Usage: progname [args]\n"
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/// "<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>: %s [<5B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>]\n\n\t<><74><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>:\n"
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change_helpstring(_("Usage: %s [args]\n\n\tWhere args are:\n"));
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// parse arguments
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parseargs(&argc, &argv, cmdlnopts);
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if(help) showhelp(-1, cmdlnopts);
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if(argc > 0){
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/// "<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>[<5B>]:"
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printf("\n%s\n", _("Ignore argument[s]:"));
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for (i = 0; i < argc; i++)
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printf("\t%s\n", argv[i]);
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}
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return &G;
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}
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