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/*
Copyright 2022-2023 Gabriel Jensen.
This file is part of agbsum.
agbsum is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
agbsum is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License along with agbsum. If not, see <https://www.gnu.org/licenses/>.
*/
#include <agbsum.h>
#include <inttypes.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
noreturn static void
agb_expparval (char const chrpar)
{
fprintf (stderr,"Expected value for character parameter '%c'\n", chrpar);
agb_exi (agb_cnd_err, NULL);
}
static bool
agb_chkchrpar (struct agb_dat * const restrict dat, char const* const restrict par)
{
char const chrpar = par[0x0];
if (chrpar == '\x0') {return true;}
char const* const restrict paramval = &par[0x1];
switch (chrpar) {
default:
fprintf (stderr,"Invalid character parameter '%c'\n", chrpar);
agb_exi (agb_cnd_err, NULL);
case 'h':
agb_hlp ();
agb_exi (agb_cnd_oky, NULL);
case 'i':
{
if (paramval[0x0] == '\x0') {agb_expparval (chrpar);}
dat->pth = paramval;
}
return true;
case 'p':
dat->dopat = true;
return false;
case 's':
dat->sil = true;
return false;
}
}
void
agb_chkpar (struct agb_dat * const restrict dat, int const argc, char const* const* const argv) {
if (argc < 0x2) {
agb_hlp ();
agb_exi (agb_cnd_oky, NULL);
} else {
size_t const numpar = argc; // Prettier.
for (ptrdiff_t pos = 0x1u; pos < (ptrdiff_t)numpar; ++pos) {
// Iterate over the parameters. One hyphen denotes character parameters (-h) whilst two denote long paramters (--help).
char const* const par = argv[pos];
if (par[0x0] == '-') {
if (par[0x1] == '-') {
char const* const lngparam = &par[0x2];
// Check long parameters.
if (lngparam[0x0] == '\x0') {
fputs ("Missing long parameter after '--' sequence\n", stderr);
agb_exi (agb_cnd_err, NULL);
}
if (!strcmp (lngparam,"help")) {
agb_hlp ();
agb_exi (agb_cnd_oky, NULL);
}
if (!strcmp (lngparam,"version")) {
agb_cpy();
agb_exi (agb_cnd_oky, NULL);
}
fprintf (stderr,"Invalid long parameter \"%s\"\n", lngparam);
agb_exi (agb_cnd_err, NULL);
}
if (par[0x1] == '\x0') {
fputs ("Missing character parameter after '-'\n", stderr);
agb_exi (agb_cnd_err, NULL);
}
// Check character parameters.
for (char const* chrpos = &par[0x1];; ++chrpos) {if (agb_chkchrpar (dat, chrpos)) {break;}}
continue;
}
}
// We did not find the 'i' parameter, so we don't know where the ROM is.
if (dat->pth == NULL) {
fputs ("ROM not set (missing character parameter 'i')\n", stderr);
agb_exi (agb_cnd_err, NULL);
}
}
}
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