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src: use arraysize instead of hardcode number

PR-URL: nodejs#24473
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Refael Ackermann <refack@gmail.com>
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leeight authored and refack committed Nov 19, 2018
1 parent 8886c4e commit 09a6b7a745af0759ae1c5d150374d4468e71035e
Showing with 17 additions and 6 deletions.
  1. +4 −3 src/node_os.cc
  2. +4 −3 src/node_url.cc
  3. +9 −0 src/util.h
@@ -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]),
@@ -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;
@@ -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).

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