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Base64: Fix a little differently.

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Change-Id: I394a1c99e1ecf87b4e236cf0aced5f9429364ace
This commit is contained in:
Peter Johnson
2015-07-03 17:27:03 -07:00
parent 1225d3ef75
commit 1e9b9b9a3e
1 changed files with 9 additions and 10 deletions
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19
src/Base64.cpp
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@@ -126,16 +126,15 @@ void Base64Encode(llvm::StringRef plain, std::string* encoded) {
std::size_t len = plain.size();
encoded->reserve(((len + 2) / 3 * 4) + 1);
std::size_t i = 0;
if (len >= 2)
for (; i < len - 2; i += 3) {
(*encoded) += basis_64[(plain[i] >> 2) & 0x3F];
(*encoded) +=
basis_64[((plain[i] & 0x3) << 4) | ((int)(plain[i + 1] & 0xF0) >> 4)];
(*encoded) += basis_64[((plain[i + 1] & 0xF) << 2) |
((int)(plain[i + 2] & 0xC0) >> 6)];
(*encoded) += basis_64[plain[i + 2] & 0x3F];
}
std::size_t i;
for (i = 0; (i + 2) < len; i += 3) {
(*encoded) += basis_64[(plain[i] >> 2) & 0x3F];
(*encoded) +=
basis_64[((plain[i] & 0x3) << 4) | ((int)(plain[i + 1] & 0xF0) >> 4)];
(*encoded) += basis_64[((plain[i + 1] & 0xF) << 2) |
((int)(plain[i + 2] & 0xC0) >> 6)];
(*encoded) += basis_64[plain[i + 2] & 0x3F];
}
if (i < len) {
(*encoded) += basis_64[(plain[i] >> 2) & 0x3F];
if (i == (len - 1)) {