mirror of
https://github.com/eddyem/eddys_snippets.git
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124 lines
3.5 KiB
C
124 lines
3.5 KiB
C
/*
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* cmdlnopts.c - the only function that parce 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 "cmdlnopts.h"
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/*
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* here are global parameters initialisation
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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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{"help", 0, NULL, 'h', arg_int, APTR(&help), N_("show this help")},
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// ...
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end_option
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};
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/**
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* Parse string of suboptions (--option=name1=var1:name2=var2... or -O name1=var1,name2=var2...)
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* Suboptions could be divided by colon or comma
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*
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* !!NAMES OF SUBOPTIONS ARE CASE-UNSENSITIVE!!!
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*
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* @param arg (i) - string with description
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* @param V (io) - pointer to suboptions array (result will be stored in sopts->val)
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* @return TRUE if success
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*/
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bool get_suboptions(void *arg, suboptions *V){
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char *tok, *val, *par;
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int i;
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tok = strtok(arg, ":,");
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do{
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if((val = strchr(tok, '=')) == NULL){ // wrong format
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WARNX(_("Wrong format: no value for keyword"));
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return FALSE;
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}
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*val++ = '\0';
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par = tok;
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for(i = 0; V[i].val; i++){
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if(strcasecmp(par, V[i].par) == 0){ // found parameter
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if(V[i].isdegr){ // DMS
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if(!get_radians(V[i].val, val)) // wrong angle
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return FALSE;
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DBG("Angle: %g rad\n", *(V[i].val));
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}else{ // simple float
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if(!myatof(V[i].val, val)) // wrong number
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return FALSE;
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DBG("Float val: %g\n", *(V[i].val));
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}
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break;
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}
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}
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if(!V[i].val){ // nothing found - wrong format
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WARNX(_("Bad keyword!"));
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return FALSE;
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}
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}while((tok = strtok(NULL, ":,")));
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return TRUE;
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}
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/**
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* functions of subargs parcing can looks as this
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*/
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bool get_mir_par(void *arg, int N _U_){
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suboptions V[] = { // array of mirror parameters and string keys for cmdln pars
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{&M.D, "diam", FALSE},
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{&M.F, "foc", FALSE},
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{&M.Zincl, "zincl", TRUE},
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{&M.Aincl, "aincl", TRUE},
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{&M.objA, "aobj", TRUE},
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{&M.objZ, "zobj", TRUE},
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{&M.foc, "ccd", FALSE},
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{0,0,0}
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};
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return get_suboptions(arg, V);
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}
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/**
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* Parce 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 *parce_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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ptr = memcpy(&M, &Mdefault, sizeof(M)); assert(ptr);
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G.Mirror = &M;
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// format of help: "Usage: progname [args]\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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parceargs(&argc, &argv, cmdlnopts);
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if(help) showhelp(-1, cmdlnopts);
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if(argc > 0){
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printf("\nIgnore argument[s]:\n");
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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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