Return read bytes in File::read().

[apitrace] / common / trace_file_zlib.cpp

diff --git a/common/trace_file_zlib.cpp b/common/trace_file_zlib.cpp
index b299b5a6bd2879fdaec8937d493ab8a7e64694f9..5d47d5387b366d472777f3577980386f06f80c2a 100644 (file)
--- a/common/trace_file_zlib.cpp
+++ b/common/trace_file_zlib.cpp
@@ -53,7 +53,7 @@ public:
 protected:
     virtual bool rawOpen(const std::string &filename, File::Mode mode);
     virtual bool rawWrite(const void *buffer, size_t length);
-    virtual bool rawRead(void *buffer, size_t length);
+    virtual size_t rawRead(void *buffer, size_t length);
     virtual int rawGetc();
     virtual void rawClose();
     virtual void rawFlush();
@@ -100,9 +100,10 @@ bool ZLibFile::rawWrite(const void *buffer, size_t length)
     return gzwrite(m_gzFile, buffer, length) != -1;
 }
 
-bool ZLibFile::rawRead(void *buffer, size_t length)
+size_t ZLibFile::rawRead(void *buffer, size_t length)
 {
-    return gzread(m_gzFile, buffer, length) != -1;
+    int ret = gzread(m_gzFile, buffer, length);
+    return ret < 0 ? 0 : ret;
 }
 
 int ZLibFile::rawGetc()