libraries/libldap/charray.c

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 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Mozilla Communicator client code, released
 * March 31, 1998.
 *
 * The Initial Developer of the Original Code is
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 * Portions created by the Initial Developer are Copyright (C) 1998-1999
 * the Initial Developer. All Rights Reserved.
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 *
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 * either of the GNU General Public License Version 2 or later (the "GPL"),
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/* charray.c - routines for dealing with char * arrays */

#include "ldap-int.h"

/*
 * Add s at the end of the array of strings *a.
 * Return 0 for success, -1 for failure.
 */
int LDAP_CALL ldap_charray_add(char*** a, char* s) {
  int n;

  if (*a == NULL) {
    *a = (char**)NSLDAPI_MALLOC(2 * sizeof(char*));
    if (*a == NULL) {
      return -1;
    }
    n = 0;
  } else {
    for (n = 0; *a != NULL && (*a)[n] != NULL; n++) {
      ; /* NULL */
    }

    *a = (char**)NSLDAPI_REALLOC((char*)*a, (n + 2) * sizeof(char*));
    if (*a == NULL) {
      return -1;
    }
  }

  (*a)[n++] = s;
  (*a)[n] = NULL;
  return 0;
}

/*
 * Add array of strings s at the end of the array of strings *a.
 * Return 0 for success, -1 for failure.
 */
int LDAP_CALL ldap_charray_merge(char*** a, char** s) {
  int i, n, nn;

  if ((s == NULL) || (s[0] == NULL)) return 0;

  for (n = 0; *a != NULL && (*a)[n] != NULL; n++) {
    ; /* NULL */
  }
  for (nn = 0; s[nn] != NULL; nn++) {
    ; /* NULL */
  }

  *a = (char**)NSLDAPI_REALLOC((char*)*a, (n + nn + 1) * sizeof(char*));
  if (*a == NULL) {
    return -1;
  }

  for (i = 0; i < nn; i++) {
    (*a)[n + i] = s[i];
  }
  (*a)[n + nn] = NULL;
  return 0;
}

void LDAP_CALL ldap_charray_free(char** array) {
  char** a;

  if (array == NULL) {
    return;
  }

  for (a = array; *a != NULL; a++) {
    if (*a != NULL) {
      NSLDAPI_FREE(*a);
    }
  }
  NSLDAPI_FREE((char*)array);
}

int LDAP_CALL ldap_charray_inlist(char** a, char* s) {
  int i;

  if (a == NULL) return (0);

  for (i = 0; a[i] != NULL; i++) {
    if (strcasecmp(s, a[i]) == 0) {
      return (1);
    }
  }

  return (0);
}

/*
 * Duplicate the array of strings a, return NULL upon any memory failure.
 */
char** LDAP_CALL ldap_charray_dup(char** a) {
  int i;
  char** new;

  for (i = 0; a[i] != NULL; i++)
    ; /* NULL */

  new = (char**)NSLDAPI_MALLOC((i + 1) * sizeof(char*));
  if (new == NULL) {
    return NULL;
  }

  for (i = 0; a[i] != NULL; i++) {
    new[i] = nsldapi_strdup(a[i]);
    if (new[i] == NULL) {
      int j;

      for (j = 0; j < i; j++) NSLDAPI_FREE(new[j]);
      NSLDAPI_FREE(new);
      return NULL;
    }
  }
  new[i] = NULL;

  return (new);
}

/*
 * Tokenize the string str, return NULL upon any memory failure.
 * XXX: on many platforms this function is not thread safe because it
 * uses strtok().
 */
char** LDAP_CALL ldap_str2charray(char* str, char* brkstr)
/* This implementation fails if brkstr contains multibyte characters.
   But it works OK if str is UTF-8 and brkstr is 7-bit ASCII.
 */
{
  char** res;
  char* s;
  int i;
#ifdef HAVE_STRTOK_R /* defined in portable.h */
  char* lasts;
#endif

  i = 1;
  for (s = str; *s; s++) {
    if (strchr(brkstr, *s) != NULL) {
      i++;
    }
  }

  res = (char**)NSLDAPI_MALLOC((i + 1) * sizeof(char*));
  if (res == NULL) {
    return NULL;
  }
  i = 0;
  for (s = STRTOK(str, brkstr, &lasts); s != NULL;
       s = STRTOK(NULL, brkstr, &lasts)) {
    res[i++] = nsldapi_strdup(s);
    if (res[i - 1] == NULL) {
      int j;

      for (j = 0; j < (i - 1); j++) NSLDAPI_FREE(res[j]);
      NSLDAPI_FREE(res);
      return NULL;
    }
  }
  res[i] = NULL;

  return (res);
}

int LDAP_CALL ldap_charray_position(char** a, char* s) {
  int i;

  for (i = 0; a[i] != NULL; i++) {
    if (strcasecmp(s, a[i]) == 0) {
      return (i);
    }
  }

  return (-1);
}