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-rw-r--r--apt-pkg/contrib/fileutl.cc20
1 files changed, 8 insertions, 12 deletions
diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index c4ff36a13..aa5831f58 100644
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -932,7 +932,7 @@ protected:
bool empty() { return bufferend <= bufferstart; }
unsigned long long size() { return bufferend-bufferstart; }
void reset() { bufferend = bufferstart = 0; }
- ssize_t read(void *to, unsigned long long requested_size)
+ ssize_t read(void *to, unsigned long long requested_size) APT_MUSTCHECK
{
if (size() < requested_size)
requested_size = size();
@@ -995,19 +995,15 @@ public:
unsigned long long const OutputSize = std::min(Size, buffer.size());
char const * const newline = static_cast<char const * const>(memchr(buffer.get(), '\n', OutputSize));
+ // Read until end of line or up to Size bytes from the buffer.
+ unsigned long long actualread = buffer.read(To,
+ (newline != nullptr)
+ ? (newline - buffer.get()) + 1
+ : OutputSize);
+ To += actualread;
+ Size -= actualread;
if (newline != nullptr)
- {
- size_t length = (newline - buffer.get()) + 1;
- buffer.read(To, length);
- To += length;
break;
- }
- else
- {
- buffer.read(To, OutputSize);
- To += OutputSize;
- Size -= OutputSize;
- }
} while (Size > 0);
*To = '\0';
return InitialTo;