ppd/array.c

//
// Sorted array routines for libppd.
//
// Copyright 2007-2014 by Apple Inc.
// Copyright 1997-2007 by Easy Software Products.
//
// Licensed under Apache License v2.0.  See the file "LICENSE" for more
// information.
//

//
// Include necessary headers...
//

#include <ppd/string-private.h>
#include <ppd/debug-internal.h>
#include <ppd/array-private.h>
#include <ppd/libcups2-private.h>


//
// '_ppdArrayAddStrings()' - Add zero or more delimited strings to an array.
//
// Note: The array MUST be created using the @link _ppdArrayNewStrings@
// function. Duplicate strings are NOT added. If the string pointer "s" is NULL
// or the empty string, no strings are added to the array.
//

int					// O - 1 on success, 0 on failure
_ppdArrayAddStrings(cups_array_t *a,	// I - Array
		    const char   *s,	// I - Delimited strings or NULL
		    char         delim)	// I - Delimiter character
{
  char		*buffer,		// Copy of string
		*start,			// Start of string
		*end;			// End of string
  int		status = 1;		// Status of add


  DEBUG_printf(("_ppdArrayAddStrings(a=%p, s=\"%s\", delim='%c')",
		(void *)a, s, delim));

  if (!a || !s || !*s)
  {
    DEBUG_puts("1_ppdArrayAddStrings: Returning 0");
    return (0);
  }

  if (delim == ' ')
  {
    //
    // Skip leading whitespace...
    //

    DEBUG_puts("1_ppdArrayAddStrings: Skipping leading whitespace.");

    while (*s && isspace(*s & 255))
      s ++;

    DEBUG_printf(("1_ppdArrayAddStrings: Remaining string \"%s\".", s));
  }

  if (!strchr(s, delim) &&
      (delim != ' ' || (!strchr(s, '\t') && !strchr(s, '\n'))))
  {
    //
    // String doesn't contain a delimiter, so add it as a single value...
    //

    DEBUG_puts("1_ppdArrayAddStrings: No delimiter seen, adding a single "
               "value.");

    if (!cupsArrayFind(a, (void *)s))
      status = cupsArrayAdd(a, (void *)s);
  }
  else if ((buffer = strdup(s)) == NULL)
  {
    DEBUG_puts("1_ppdArrayAddStrings: Unable to duplicate string.");
    status = 0;
  }
  else
  {
    for (start = end = buffer; *end; start = end)
    {
      //
      // Find the end of the current delimited string and see if we need to add
      // it...
      //

      if (delim == ' ')
      {
        while (*end && !isspace(*end & 255))
          end ++;
        while (*end && isspace(*end & 255))
          *end++ = '\0';
      }
      else if ((end = strchr(start, delim)) != NULL)
        *end++ = '\0';
      else
        end = start + strlen(start);

      DEBUG_printf(("1_ppdArrayAddStrings: Adding \"%s\", end=\"%s\"", start,
                    end));

      if (!cupsArrayFind(a, start))
        status &= cupsArrayAdd(a, start);
    }

    free(buffer);
  }

  DEBUG_printf(("1_ppdArrayAddStrings: Returning %d.", status));

  return (status);
}


//
// '_ppdArrayNewStrings()' - Create a new array of comma-delimited strings.
//
// Note: The array automatically manages copies of the strings passed. If the
// string pointer "s" is NULL or the empty string, no strings are added to the
// newly created array.
//

cups_array_t *				// O - Array
_ppdArrayNewStrings(const char *s,	// I - Delimited strings or NULL
		    char       delim)	// I - Delimiter character
{
  cups_array_t	*a;			// Array


  if ((a = cupsArrayNew((cups_array_cb_t)strcmp, NULL, NULL, 0,
                         (cups_acopy_cb_t)_ppdStrAlloc,
			 (cups_afree_cb_t )_ppdStrFree)) != NULL)
    _ppdArrayAddStrings(a, s, delim);

  return (a);
}