[thirdparty/cups.git] / cups / string.c

/*
 * "$Id: string.c,v 1.5.2.5 2002/05/15 01:57:01 mike Exp $"
 *
 *   String functions for the Common UNIX Printing System (CUPS).
 *
 *   Copyright 1997-2002 by Easy Software Products.
 *
 *   These coded instructions, statements, and computer programs are the
 *   property of Easy Software Products and are protected by Federal
 *   copyright law.  Distribution and use rights are outlined in the file
 *   "LICENSE.txt" which should have been included with this file.  If this
 *   file is missing or damaged please contact Easy Software Products
 *   at:
 *
 *       Attn: CUPS Licensing Information
 *       Easy Software Products
 *       44141 Airport View Drive, Suite 204
 *       Hollywood, Maryland 20636-3111 USA
 *
 *       Voice: (301) 373-9603
 *       EMail: cups-info@cups.org
 *         WWW: http://www.cups.org
 *
 *   This file is subject to the Apple OS-Developed Software exception.
 *
 * Contents:
 *
 *   cups_strdup()      - Duplicate a string.
 *   cups_strcasecmp()  - Do a case-insensitive comparison.
 *   cups_strncasecmp() - Do a case-insensitive comparison on up to N chars.
 */

/*
 * Include necessary headers...
 */

#include "string.h"


/*
 * 'cups_strdup()' - Duplicate a string.
 */

#  ifndef HAVE_STRDUP
char *				/* O - New string pointer */
cups_strdup(const char *s)	/* I - String to duplicate */
{
  char	*t;			/* New string pointer */


  if (s == NULL)
    return (NULL);

  if ((t = malloc(strlen(s) + 1)) == NULL)
    return (NULL);

  return (strcpy(t, s));
}
#  endif /* !HAVE_STRDUP */


/*
 * 'cups_strcasecmp()' - Do a case-insensitive comparison.
 */

#  ifndef HAVE_STRCASECMP
int				/* O - Result of comparison (-1, 0, or 1) */
cups_strcasecmp(const char *s,	/* I - First string */
               const char *t)	/* I - Second string */
{
  while (*s != '\0' && *t != '\0')
  {
    if (tolower(*s) < tolower(*t))
      return (-1);
    else if (tolower(*s) > tolower(*t))
      return (1);

    s ++;
    t ++;
  }

  if (*s == '\0' && *t == '\0')
    return (0);
  else if (*s != '\0')
    return (1);
  else
    return (-1);
}
#  endif /* !HAVE_STRCASECMP */

/*
 * 'cups_strncasecmp()' - Do a case-insensitive comparison on up to N chars.
 */

#  ifndef HAVE_STRNCASECMP
int				/* O - Result of comparison (-1, 0, or 1) */
cups_strncasecmp(const char *s,	/* I - First string */
                const char *t,	/* I - Second string */
	        size_t     n)	/* I - Maximum number of characters to compare */
{
  while (*s != '\0' && *t != '\0' && n > 0)
  {
    if (tolower(*s) < tolower(*t))
      return (-1);
    else if (tolower(*s) > tolower(*t))
      return (1);

    s ++;
    t ++;
    n --;
  }

  if (n == 0)
    return (0);
  else if (*s == '\0' && *t == '\0')
    return (0);
  else if (*s != '\0')
    return (1);
  else
    return (-1);
}
#  endif /* !HAVE_STRNCASECMP */


/*
 * End of "$Id: string.c,v 1.5.2.5 2002/05/15 01:57:01 mike Exp $".
 */
Commit	Line	Data
3b960317	1	/*
aa7e125a	2	* "$Id: string.c,v 1.5.2.5 2002/05/15 01:57:01 mike Exp $"
3b960317	3	*
	4	* String functions for the Common UNIX Printing System (CUPS).
	5	*
839c43aa	6	* Copyright 1997-2002 by Easy Software Products.
3b960317	7	*
	8	* These coded instructions, statements, and computer programs are the
	9	* property of Easy Software Products and are protected by Federal
	10	* copyright law. Distribution and use rights are outlined in the file
	11	* "LICENSE.txt" which should have been included with this file. If this
	12	* file is missing or damaged please contact Easy Software Products
	13	* at:
	14	*
	15	* Attn: CUPS Licensing Information
	16	* Easy Software Products
8784b6a6	17	* 44141 Airport View Drive, Suite 204
3b960317	18	* Hollywood, Maryland 20636-3111 USA
	19	*
	20	* Voice: (301) 373-9603
	21	* EMail: cups-info@cups.org
	22	* WWW: http://www.cups.org
	23	*
dab1a4d8	24	* This file is subject to the Apple OS-Developed Software exception.
dab1a4d8	25	*
3b960317	26	* Contents:
3b960317	27	*
aa7e125a	28	* cups_strdup() - Duplicate a string.
	29	* cups_strcasecmp() - Do a case-insensitive comparison.
	30	* cups_strncasecmp() - Do a case-insensitive comparison on up to N chars.
3b960317	31	*/
	32
	33	/*
	34	* Include necessary headers...
	35	*/
	36
	37	#include "string.h"
	38
	39
	40	/*
aa7e125a	41	* 'cups_strdup()' - Duplicate a string.
3b960317	42	*/
	43
	44	# ifndef HAVE_STRDUP
a87857fe	45	char * /* O - New string pointer */
aa7e125a	46	cups_strdup(const char s) / I - String to duplicate */
3b960317	47	{
a87857fe	48	char t; / New string pointer */
3b960317	49
	50
	51	if (s == NULL)
	52	return (NULL);
	53
	54	if ((t = malloc(strlen(s) + 1)) == NULL)
	55	return (NULL);
	56
	57	return (strcpy(t, s));
	58	}
	59	# endif /* !HAVE_STRDUP */
	60
	61
	62	/*
aa7e125a	63	* 'cups_strcasecmp()' - Do a case-insensitive comparison.
3b960317	64	*/
	65
	66	# ifndef HAVE_STRCASECMP
	67	int /* O - Result of comparison (-1, 0, or 1) */
aa7e125a	68	cups_strcasecmp(const char s, / I - First string */
a87857fe	69	const char t) / I - Second string */
3b960317	70	{
	71	while (s != '\0' && t != '\0')
	72	{
	73	if (tolower(s) < tolower(t))
	74	return (-1);
	75	else if (tolower(s) > tolower(t))
	76	return (1);
	77
	78	s ++;
	79	t ++;
e8fda7b9	80	}
3b960317	81
	82	if (s == '\0' && t == '\0')
	83	return (0);
	84	else if (*s != '\0')
	85	return (1);
	86	else
	87	return (-1);
	88	}
	89	# endif /* !HAVE_STRCASECMP */
	90
	91	/*
aa7e125a	92	* 'cups_strncasecmp()' - Do a case-insensitive comparison on up to N chars.
3b960317	93	*/
	94
	95	# ifndef HAVE_STRNCASECMP
	96	int /* O - Result of comparison (-1, 0, or 1) */
aa7e125a	97	cups_strncasecmp(const char s, / I - First string */
a87857fe	98	const char t, / I - Second string */
a87857fe	99	size_t n) /* I - Maximum number of characters to compare */
3b960317	100	{
	101	while (s != '\0' && t != '\0' && n > 0)
	102	{
	103	if (tolower(s) < tolower(t))
	104	return (-1);
	105	else if (tolower(s) > tolower(t))
	106	return (1);
	107
	108	s ++;
	109	t ++;
	110	n --;
e8fda7b9	111	}
3b960317	112
	113	if (n == 0)
	114	return (0);
	115	else if (s == '\0' && t == '\0')
	116	return (0);
	117	else if (*s != '\0')
	118	return (1);
	119	else
	120	return (-1);
	121	}
	122	# endif /* !HAVE_STRNCASECMP */
	123
	124
	125	/*
aa7e125a	126	* End of "$Id: string.c,v 1.5.2.5 2002/05/15 01:57:01 mike Exp $".
3b960317	127	*/