fix book code: fix strncpy does not NUL terminate filename
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- In `FFmpegPlayer.cpp`, `strncpy(playerCtx.filename, m_filePath.c_str(), m_filePath.size());` does not NUL terminate filename. Three solutions: 1) From strncpy(3) example, NUL terminate the result string explicitly. But it's tedious. 2) Use strlcpy(3) but not portable. 3) Use std::string to avoid the pitfall. I prefer the last solution. Reference: https://stackoverflow.com/a/1454071/1204713
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In
FFmpegPlayer.cpp,strncpy(playerCtx.filename, m_filePath.c_str(), m_filePath.size());does not NUL terminate filename. Three solutions: 1) From strncpy(3) example, NUL terminate the result string explicitly. But it's tedious. 2) Use strlcpy(3) but not portable. 3) Use std::string to avoid the pitfall. I prefer the last solution.Reference: https://stackoverflow.com/a/1454071/1204713