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- /*
- * hipack-string.c
- * Copyright (C) 2015 Adrian Perez <aperez@igalia.com>
- *
- * Distributed under terms of the MIT license.
- */
- #include "hipack.h"
- #include <stdlib.h>
- #include <string.h>
- #include <assert.h>
- static hipack_string_t s_empty_string = { .size = 0 };
- hipack_string_t*
- hipack_string_new_from_string (const char *str)
- {
- assert (str);
- return hipack_string_new_from_lstring (str, strlen (str));
- }
- hipack_string_t*
- hipack_string_new_from_lstring (const char *str, uint32_t len)
- {
- assert (str);
- if (len > 0) {
- hipack_string_t *hstr = hipack_alloc_array_extra (NULL,
- len, sizeof (uint8_t), sizeof (hipack_string_t));
- memcpy (hstr->data, str, len);
- hstr->size = len;
- return hstr;
- } else {
- return &s_empty_string;
- }
- }
- hipack_string_t*
- hipack_string_copy (const hipack_string_t *hstr)
- {
- assert (hstr);
- if (hstr == &s_empty_string)
- return &s_empty_string;
- return hipack_string_new_from_lstring ((const char*) hstr->data,
- hstr->size);
- }
- void
- hipack_string_free (hipack_string_t *hstr)
- {
- if (hstr && hstr != &s_empty_string) {
- hipack_alloc_free (hstr);
- }
- }
- uint32_t
- hipack_string_hash (const hipack_string_t *hstr)
- {
- assert (hstr);
- uint32_t ret = 0;
- uint32_t ctr = 0;
- for (uint32_t i = 0; i < hstr->size; i++) {
- ret ^= hstr->data[i] << ctr;
- ctr = (ctr + 1) % sizeof (void*);
- }
- return ret;
- }
- bool
- hipack_string_equal (const hipack_string_t *hstr1,
- const hipack_string_t *hstr2)
- {
- assert (hstr1);
- assert (hstr2);
- return (hstr1->size == hstr2->size) &&
- memcmp (hstr1->data, hstr2->data, hstr1->size) == 0;
- }
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