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src: use arraysize instead of hardcode number

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PR-URL: https://github.com/nodejs/node/pull/24473
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Refael Ackermann <refack@gmail.com>
This commit is contained in:
leeight 2018-11-19 12:31:26 +08:00 committed by Anna Henningsen
parent 82ceb5e4b1
commit adbf9477eb
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GPG Key ID: 9C63F3A6CD2AD8F9
3 changed files with 17 additions and 6 deletions
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7
src/node_os.cc
View File

@ -22,6 +22,7 @@
#include "node_internals.h"
#include "string_bytes.h"
#include <array>
#include <errno.h>
#include <string.h>
@ -219,7 +220,7 @@ static void GetInterfaceAddresses(const FunctionCallbackInfo<Value>& args) {
int count, i;
char ip[INET6_ADDRSTRLEN];
char netmask[INET6_ADDRSTRLEN];
char mac[18];
std::array<char, 18> mac;
Local<Object> ret, o;
Local<String> name, family;
Local<Array> ifarr;
@ -256,8 +257,8 @@ static void GetInterfaceAddresses(const FunctionCallbackInfo<Value>& args) {
ret->Set(env->context(), name, ifarr).FromJust();
}
snprintf(mac,
18,
snprintf(mac.data(),
mac.size(),
"%02x:%02x:%02x:%02x:%02x:%02x",
static_cast<unsigned char>(interfaces[i].phys_addr[0]),
static_cast<unsigned char>(interfaces[i].phys_addr[1]),

7
src/node_url.cc
View File

@ -787,10 +787,11 @@ inline bool ToASCII(const std::string& input, std::string* output) {
void URLHost::ParseIPv6Host(const char* input, size_t length) {
CHECK_EQ(type_, HostType::H_FAILED);
for (unsigned n = 0; n < 8; n++)
unsigned size = arraysize(value_.ipv6);
for (unsigned n = 0; n < size; n++)
value_.ipv6[n] = 0;
uint16_t* piece_pointer = &value_.ipv6[0];
uint16_t* const buffer_end = piece_pointer + 8;
uint16_t* const buffer_end = piece_pointer + size;
uint16_t* compress_pointer = nullptr;
const char* pointer = input;
const char* end = pointer + length;
@ -952,7 +953,7 @@ void URLHost::ParseIPv4Host(const char* input, size_t length, bool* is_ipv4) {
const char ch = pointer < end ? pointer[0] : kEOL;
const int remaining = end - pointer - 1;
if (ch == '.' || ch == kEOL) {
if (++parts > 4)
if (++parts > static_cast<int>(arraysize(numbers)))
return;
if (pointer == mark)
return;

9
src/util.h
View File

@ -37,6 +37,7 @@
#include <functional> // std::function
#include <set>
#include <string>
#include <array>
#include <unordered_map>
namespace node {
@ -223,6 +224,14 @@ inline v8::Local<v8::String> FIXED_ONE_BYTE_STRING(
return OneByteString(isolate, data, N - 1);
}
template <std::size_t N>
inline v8::Local<v8::String> FIXED_ONE_BYTE_STRING(
v8::Isolate* isolate,
const std::array<char, N>& arr) {
return OneByteString(isolate, arr.data(), N - 1);
}
// Swaps bytes in place. nbytes is the number of bytes to swap and must be a
// multiple of the word size (checked by function).