2006-11-26 11:13:41 -07:00
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/*
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* Copyright 2002-2003 Red Hat Inc., Durham, North Carolina.
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*
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation on 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 (including the
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* next paragraph) shall be included in all copies or substantial
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* 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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* NON-INFRINGEMENT. IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
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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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/*
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* Authors:
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* Rickard E. (Rik) Faith <faith@redhat.com>
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*
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*/
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/** \file
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* Generic comma-delimited argument processing. */
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#ifdef HAVE_DMX_CONFIG_H
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#include <dmx-config.h>
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#endif
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#define DMX_ARG_TEST 0
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#include "dmx.h"
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#include "dmxarg.h"
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#include <stdio.h>
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#include <string.h>
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#if DMX_ARG_TEST
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#include <stdlib.h>
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#endif
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/** Stores the parsed argument list. */
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struct _dmxArg {
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int argc; /**< Number of arguments in argv */
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int argm; /**< Maximum number of arguments store-able in argv */
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const char **argv; /**< Arguments */
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};
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/** Create an (externally opaque) \a dmxArg object. */
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dmxArg
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dmxArgCreate(void)
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{
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dmxArg a = malloc(sizeof(*a));
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a->argc = 0;
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a->argm = 2;
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a->argv = malloc(a->argm * sizeof(*a->argv));
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a->argv[0] = NULL;
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return a;
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}
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/** Free the specified \a dmxArg object. */
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void
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dmxArgFree(dmxArg a)
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{
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int i;
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2012-06-10 07:21:05 -06:00
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for (i = 0; i < a->argc; i++)
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free((char *) a->argv[i]);
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free(a->argv);
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free(a);
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}
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/** Add the \a string as the next argument in the \a dmxArg object. */
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void
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dmxArgAdd(dmxArg a, const char *string)
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{
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if (a->argm <= a->argc + 2)
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a->argv = reallocarray(a->argv, (a->argm *= 2), sizeof(*a->argv));
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a->argv[a->argc++] = strdup(string);
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a->argv[a->argc] = NULL;
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}
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/** Return the argument number \a item in the \a dmxArg object.
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* Arguments are 0 based. NULL will be returned for values less than 0
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* or equal to or greater than the number of arguments in the object. */
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const char *
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dmxArgV(dmxArg a, int item)
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{
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if (item < 0 || item >= a->argc)
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return NULL;
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return a->argv[item];
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}
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/** Return the number of arguments in the \a dmxArg object. */
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int
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dmxArgC(dmxArg a)
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{
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return a->argc;
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}
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/** Parse a string into arguments delimited by commas. Return a new \a
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* dmxArg object containing the arguments. */
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dmxArg
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dmxArgParse(const char *string)
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{
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2019-07-27 01:57:06 -06:00
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int i = 0;
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2006-11-26 11:13:41 -07:00
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dmxArg a = dmxArgCreate();
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2012-06-10 07:21:05 -06:00
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if (!string)
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return a;
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2006-11-26 11:13:41 -07:00
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2019-07-27 01:57:06 -06:00
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a->argv = (const char **)xstrtokenize(string, ",");
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if (a->argv)
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for (i = 0; a->argv[i] != NULL; i++);
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a->argc = i;
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2006-11-26 11:13:41 -07:00
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return a;
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}
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#if DMX_ARG_TEST
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static void
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dmxArgPrint(dmxArg a)
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{
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int i;
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printf(" argc = %d\n", dmxArgC(a));
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for (i = 0; i < dmxArgC(a); i++)
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printf(" argv[%d] = \"%s\"\n", i, dmxArgV(a, i));
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}
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static void
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dmxArgTest(const char *string)
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{
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dmxArg a;
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if (!string)
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printf("Testing NULL\n");
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else if (!strlen(string))
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printf("Testing (empty)\n");
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else
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printf("Testing \"%s\"\n", string);
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a = dmxArgParse(string);
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dmxArgPrint(a);
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dmxArgFree(a);
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}
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2012-06-10 07:21:05 -06:00
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int
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main(void)
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{
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dmxArgTest(NULL);
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dmxArgTest("");
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dmxArgTest(",");
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dmxArgTest("a");
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dmxArgTest("a,");
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dmxArgTest(",a");
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dmxArgTest("a,b");
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dmxArgTest("a,b,");
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dmxArgTest("a,b,,");
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dmxArgTest("a,b,,c");
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return 0;
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}
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#endif
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