forked from lda/telodendria
118 lines
3.4 KiB
C
118 lines
3.4 KiB
C
/*
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* Copyright (C) 2022-2023 Jordan Bancino <@jordan:bancino.net>
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <Args.h>
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#include <Memory.h>
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#include <Log.h>
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#include <Str.h>
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#include <ctype.h>
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#include <string.h>
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void
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ArgParseStateInit(ArgParseState * state)
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{
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state->optPos = 1;
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state->optErr = 1;
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state->optInd = 1;
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state->optOpt = 0;
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state->optArg = NULL;
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}
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int
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ArgParse(ArgParseState * state, Array * args, const char *optStr)
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{
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const char *arg;
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arg = ArrayGet(args, state->optInd);
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if (arg && StrEquals(arg, "--"))
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{
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state->optInd++;
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return -1;
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}
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else if (!arg || arg[0] != '-' || !isalnum((unsigned char) arg[1]))
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{
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return -1;
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}
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else
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{
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const char *opt = strchr(optStr, arg[state->optPos]);
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state->optOpt = arg[state->optPos];
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if (!opt)
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{
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if (state->optErr && *optStr != ':')
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{
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Log(LOG_ERR, "Illegal option: %c", ArrayGet(args, 0), state->optOpt);
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}
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if (!arg[++state->optPos])
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{
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state->optInd++;
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state->optPos = 1;
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}
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return '?';
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}
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else if (opt[1] == ':')
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{
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if (arg[state->optPos + 1])
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{
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state->optArg = (char *) arg + state->optPos + 1;
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state->optInd++;
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state->optPos = 1;
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return state->optOpt;
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}
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else if (ArrayGet(args, state->optInd + 1))
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{
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state->optArg = (char *) ArrayGet(args, state->optInd + 1);
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state->optInd += 2;
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state->optPos = 1;
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return state->optOpt;
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}
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else
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{
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if (state->optErr && *optStr != ':')
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{
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Log(LOG_ERR, "Option requires an argument: %c", state->optOpt);
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}
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if (!arg[++state->optPos])
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{
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state->optInd++;
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state->optPos = 1;
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}
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return *optStr == ':' ? ':' : '?';
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}
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}
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else
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{
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if (!arg[++state->optPos])
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{
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state->optInd++;
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state->optPos = 1;
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}
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return state->optOpt;
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}
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}
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}
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