tor-android/external/badvpn_dns/ncd/extra/value_utils.h

175 lines
5.3 KiB
C

/**
* @file value_utils.h
* @author Ambroz Bizjak <ambrop7@gmail.com>
*
* @section LICENSE
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef NCD_VALUE_UTILS_H
#define NCD_VALUE_UTILS_H
#include <stdint.h>
#include <limits.h>
#include <misc/debug.h>
#include <misc/parse_number.h>
#include <misc/strdup.h>
#include <misc/balloc.h>
#include <system/BTime.h>
#include <ncd/NCDVal.h>
#include <ncd/NCDStringIndex.h>
#include <ncd/static_strings.h>
static int ncd_is_none (NCDValRef val);
static NCDValRef ncd_make_boolean (NCDValMem *mem, int value, NCDStringIndex *string_index);
static int ncd_read_boolean (NCDValRef val);
static int ncd_read_uintmax (NCDValRef string, uintmax_t *out) WARN_UNUSED;
static int ncd_read_time (NCDValRef string, btime_t *out) WARN_UNUSED;
static NCD_string_id_t ncd_get_string_id (NCDValRef string, NCDStringIndex *string_index);
static NCDValRef ncd_make_uintmax (NCDValMem *mem, uintmax_t value);
static char * ncd_strdup (NCDValRef stringnonulls);
static int ncd_is_none (NCDValRef string)
{
ASSERT(NCDVal_IsString(string))
if (NCDVal_IsIdString(string)) {
return NCDVal_IdStringId(string) == NCD_STRING_NONE;
} else {
return NCDVal_StringEquals(string, "<none>");
}
}
static NCDValRef ncd_make_boolean (NCDValMem *mem, int value, NCDStringIndex *string_index)
{
ASSERT(mem)
ASSERT(string_index)
NCD_string_id_t str_id = (value ? NCD_STRING_TRUE : NCD_STRING_FALSE);
return NCDVal_NewIdString(mem, str_id, string_index);
}
static int ncd_read_boolean (NCDValRef string)
{
ASSERT(NCDVal_IsString(string))
if (NCDVal_IsIdString(string)) {
return NCDVal_IdStringId(string) == NCD_STRING_TRUE;
} else {
return NCDVal_StringEquals(string, "true");
}
}
static int ncd_read_uintmax (NCDValRef string, uintmax_t *out)
{
ASSERT(NCDVal_IsString(string))
ASSERT(out)
size_t length = NCDVal_StringLength(string);
if (NCDVal_IsContinuousString(string)) {
return parse_unsigned_integer_bin(NCDVal_StringData(string), length, out);
}
b_cstring cstr = NCDVal_StringCstring(string);
return parse_unsigned_integer_cstr(cstr, 0, cstr.length, out);
}
static int ncd_read_time (NCDValRef string, btime_t *out)
{
ASSERT(NCDVal_IsString(string))
ASSERT(out)
uintmax_t n;
if (!ncd_read_uintmax(string, &n)) {
return 0;
}
if (n > INT64_MAX) {
return 0;
}
*out = n;
return 1;
}
static NCD_string_id_t ncd_get_string_id (NCDValRef string, NCDStringIndex *string_index)
{
ASSERT(NCDVal_IsString(string))
ASSERT(string_index)
if (NCDVal_IsIdString(string)) {
return NCDVal_IdStringId(string);
} else if (NCDVal_IsContinuousString(string)) {
return NCDStringIndex_GetBin(string_index, NCDVal_StringData(string), NCDVal_StringLength(string));
}
b_cstring cstr = NCDVal_StringCstring(string);
char *temp = b_cstring_strdup(cstr, 0, cstr.length);
if (!temp) {
return -1;
}
NCD_string_id_t res = NCDStringIndex_GetBin(string_index, temp, cstr.length);
BFree(temp);
return res;
}
static NCDValRef ncd_make_uintmax (NCDValMem *mem, uintmax_t value)
{
ASSERT(mem)
int size = compute_decimal_repr_size(value);
NCDValRef val = NCDVal_NewStringUninitialized(mem, size);
if (!NCDVal_IsInvalid(val)) {
char *data = (char *)NCDVal_StringData(val);
generate_decimal_repr(value, data, size);
}
return val;
}
static char * ncd_strdup (NCDValRef stringnonulls)
{
ASSERT(NCDVal_IsStringNoNulls(stringnonulls))
size_t length = NCDVal_StringLength(stringnonulls);
if (NCDVal_IsContinuousString(stringnonulls)) {
return b_strdup_bin(NCDVal_StringData(stringnonulls), length);
}
b_cstring cstr = NCDVal_StringCstring(stringnonulls);
return b_cstring_strdup(cstr, 0, cstr.length);
}
#endif