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Skip newlines in binary decoding (Fix #387) (#616)

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* Skip newlines in binary decoding
This fixes #387

* Skip all whitespace characters

This also removes spaces and tabs in addition to newlines.
This commit is contained in:
Stefan Reinhold
2018-09-03 22:55:45 +02:00
committed by Jesse Beder
parent b71e672caf
commit 45d9035a33
2 changed files with 29 additions and 2 deletions
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11
src/binary.cpp
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@@ -1,5 +1,7 @@
#include "yaml-cpp/binary.h"
#include <ctype.h>
namespace YAML {
static const char encoding[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
@@ -72,19 +74,24 @@ std::vector<unsigned char> DecodeBase64(const std::string &input) {
unsigned char *out = &ret[0];
unsigned value = 0;
for (std::size_t i = 0; i < input.size(); i++) {
for (std::size_t i = 0, cnt = 0; i < input.size(); i++) {
if (std::isspace(input[i])) {
// skip newlines
continue;
}
unsigned char d = decoding[static_cast<unsigned>(input[i])];
if (d == 255)
return ret_type();
value = (value << 6) | d;
if (i % 4 == 3) {
if (cnt % 4 == 3) {
*out++ = value >> 16;
if (i > 0 && input[i - 1] != '=')
*out++ = value >> 8;
if (input[i] != '=')
*out++ = value;
}
++cnt;
}
ret.resize(out - &ret[0]);