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Diffstat (limited to 'src/ccapi/common/cci_array_internal.c')
-rw-r--r--src/ccapi/common/cci_array_internal.c312
1 files changed, 312 insertions, 0 deletions
diff --git a/src/ccapi/common/cci_array_internal.c b/src/ccapi/common/cci_array_internal.c
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index 000000000000..7a205d7201cc
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+++ b/src/ccapi/common/cci_array_internal.c
@@ -0,0 +1,312 @@
+/* ccapi/common/cci_array_internal.c */
+/*
+ * Copyright 2006, 2007 Massachusetts Institute of Technology.
+ * All Rights Reserved.
+ *
+ * Export of this software from the United States of America may
+ * require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. Furthermore if you modify this software you must label
+ * your software as modified software and not distribute it in such a
+ * fashion that it might be confused with the original M.I.T. software.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#include "cci_common.h"
+#include "cci_array_internal.h"
+
+#ifdef WIN32
+#include "k5-platform.h"
+#endif
+
+/* ------------------------------------------------------------------------ */
+
+struct cci_array_d {
+ cci_array_object_t *objects;
+ cc_uint64 count;
+ cc_uint64 max_count;
+
+ cci_array_object_release_t object_release;
+};
+
+struct cci_array_d cci_array_initializer = { NULL, 0, 0, NULL };
+
+#define CCI_ARRAY_COUNT_INCREMENT 16
+
+/* ------------------------------------------------------------------------ */
+
+static cc_int32 cci_array_resize (cci_array_t io_array,
+ cc_uint64 in_new_count)
+{
+ cc_int32 err = ccNoError;
+ cc_uint64 new_max_count = 0;
+
+ if (!io_array) { err = cci_check_error (ccErrBadParam); }
+
+ if (!err) {
+ cc_uint64 old_max_count = io_array->max_count;
+ new_max_count = io_array->max_count;
+
+ if (in_new_count > old_max_count) {
+ /* Expand the array */
+ while (in_new_count > new_max_count) {
+ new_max_count += CCI_ARRAY_COUNT_INCREMENT;
+ }
+
+ } else if ((in_new_count + CCI_ARRAY_COUNT_INCREMENT) < old_max_count) {
+ /* Shrink the array, but never drop below CC_ARRAY_COUNT_INCREMENT */
+ while ((in_new_count + CCI_ARRAY_COUNT_INCREMENT) < new_max_count &&
+ (new_max_count > CCI_ARRAY_COUNT_INCREMENT)) {
+ new_max_count -= CCI_ARRAY_COUNT_INCREMENT;
+ }
+ }
+ }
+
+ if (!err && io_array->max_count != new_max_count) {
+ cci_array_object_t *objects = io_array->objects;
+
+ if (!objects) {
+ objects = malloc (new_max_count * sizeof (*objects));
+ } else {
+ objects = realloc (objects, new_max_count * sizeof (*objects));
+ }
+ if (!objects) { err = cci_check_error (ccErrNoMem); }
+
+ if (!err) {
+ io_array->objects = objects;
+ io_array->max_count = new_max_count;
+ }
+ }
+
+ return cci_check_error (err);
+}
+
+#ifdef TARGET_OS_MAC
+#pragma mark -
+#endif
+
+/* ------------------------------------------------------------------------ */
+
+cc_int32 cci_array_new (cci_array_t *out_array,
+ cci_array_object_release_t in_array_object_release)
+{
+ cc_int32 err = ccNoError;
+ cci_array_t array = NULL;
+
+ if (!out_array) { err = cci_check_error (ccErrBadParam); }
+
+ if (!err) {
+ array = malloc (sizeof (*array));
+ if (array) {
+ *array = cci_array_initializer;
+ array->object_release = in_array_object_release;
+ } else {
+ err = cci_check_error (ccErrNoMem);
+ }
+ }
+
+ if (!err) {
+ *out_array = array;
+ array = NULL;
+ }
+
+ cci_array_release (array);
+
+ return cci_check_error (err);
+}
+
+/* ------------------------------------------------------------------------ */
+
+cc_int32 cci_array_release (cci_array_t io_array)
+{
+ cc_int32 err = ccNoError;
+
+ if (!err && io_array) {
+ cc_uint64 i;
+
+ if (io_array->object_release) {
+ for (i = 0; i < io_array->count; i++) {
+ io_array->object_release (io_array->objects[i]);
+ }
+ }
+ free (io_array->objects);
+ free (io_array);
+ }
+
+ return err;
+}
+
+/* ------------------------------------------------------------------------ */
+
+cc_uint64 cci_array_count (cci_array_t in_array)
+{
+ return in_array ? in_array->count : 0;
+}
+
+/* ------------------------------------------------------------------------ */
+
+cci_array_object_t cci_array_object_at_index (cci_array_t io_array,
+ cc_uint64 in_position)
+{
+ if (io_array && in_position < io_array->count) {
+ return io_array->objects[in_position];
+ } else {
+ if (!io_array) {
+ cci_debug_printf ("%s() got NULL array", __FUNCTION__);
+ } else {
+ cci_debug_printf ("%s() got bad index %lld (count = %lld)", __FUNCTION__,
+ in_position, io_array->count);
+ }
+ return NULL;
+ }
+}
+
+#ifdef TARGET_OS_MAC
+#pragma mark -
+#endif
+
+/* ------------------------------------------------------------------------ */
+
+cc_int32 cci_array_insert (cci_array_t io_array,
+ cci_array_object_t in_object,
+ cc_uint64 in_position)
+{
+ cc_int32 err = ccNoError;
+
+ if (!io_array ) { err = cci_check_error (ccErrBadParam); }
+ if (!in_object) { err = cci_check_error (ccErrBadParam); }
+
+ if (!err) {
+ /* Don't try to insert past the end and don't overflow the array */
+ if (in_position > io_array->count || io_array->count == UINT64_MAX) {
+ err = cci_check_error (ccErrBadParam);
+ }
+ }
+
+ if (!err) {
+ err = cci_array_resize (io_array, io_array->count + 1);
+ }
+
+ if (!err) {
+ cc_uint64 move_count = io_array->count - in_position;
+
+ if (move_count > 0) {
+ memmove (&io_array->objects[in_position + 1], &io_array->objects[in_position],
+ move_count * sizeof (*io_array->objects));
+ }
+
+ io_array->objects[in_position] = in_object;
+ io_array->count++;
+ }
+
+ return cci_check_error (err);
+}
+
+/* ------------------------------------------------------------------------ */
+
+cc_int32 cci_array_remove (cci_array_t io_array,
+ cc_uint64 in_position)
+{
+ cc_int32 err = ccNoError;
+
+ if (!io_array) { err = cci_check_error (ccErrBadParam); }
+
+ if (!err && in_position >= io_array->count) {
+ err = cci_check_error (ccErrBadParam);
+ }
+
+ if (!err) {
+ cc_uint64 move_count = io_array->count - in_position - 1;
+ cci_array_object_t object = io_array->objects[in_position];
+
+ if (move_count > 0) {
+ memmove (&io_array->objects[in_position], &io_array->objects[in_position + 1],
+ move_count * sizeof (*io_array->objects));
+ }
+ io_array->count--;
+
+ if (io_array->object_release) { io_array->object_release (object); }
+
+ cci_array_resize (io_array, io_array->count);
+ }
+
+ return cci_check_error (err);
+}
+
+/* ------------------------------------------------------------------------ */
+
+cc_int32 cci_array_move (cci_array_t io_array,
+ cc_uint64 in_position,
+ cc_uint64 in_new_position,
+ cc_uint64 *out_real_new_position)
+{
+ cc_int32 err = ccNoError;
+
+ if (!io_array ) { err = cci_check_error (ccErrBadParam); }
+ if (!out_real_new_position) { err = cci_check_error (ccErrBadParam); }
+
+ if (!err && in_position >= io_array->count) {
+ err = cci_check_error (ccErrBadParam);
+ }
+
+ if (!err && in_new_position > io_array->count) {
+ err = cci_check_error (ccErrBadParam);
+ }
+ if (!err) {
+ cc_uint64 move_from = 0;
+ cc_uint64 move_to = 0;
+ cc_uint64 move_count = 0;
+ cc_uint64 real_new_position = 0;
+
+ if (in_position < in_new_position) {
+ /* shift right, making an empty space so the
+ * actual new position is one less in_new_position */
+ move_from = in_position + 1;
+ move_to = in_position;
+ move_count = in_new_position - in_position - 1;
+ real_new_position = in_new_position - 1;
+
+ } else if (in_position > in_new_position) {
+ /* shift left */
+ move_from = in_new_position;
+ move_to = in_new_position + 1;
+ move_count = in_position - in_new_position;
+ real_new_position = in_new_position;
+
+ } else {
+ real_new_position = in_new_position;
+ }
+
+ if (move_count > 0) {
+ cci_array_object_t object = io_array->objects[in_position];
+
+ memmove (&io_array->objects[move_to], &io_array->objects[move_from],
+ move_count * sizeof (*io_array->objects));
+ io_array->objects[real_new_position] = object;
+ }
+
+ *out_real_new_position = real_new_position;
+ }
+
+ return cci_check_error (err);
+}
+
+/* ------------------------------------------------------------------------ */
+
+cc_int32 cci_array_push_front (cci_array_t io_array,
+ cc_uint64 in_position)
+{
+ cc_uint64 real_new_position = 0;
+ return cci_array_move (io_array, in_position, 0, &real_new_position);
+}
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