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  • reg_handler() in config.cis the constructor for extern imageHandler *imagehandlers[]; declared in handlers.h. Commented Jul 23, 2017 at 9:18
  • I'm not a c programmer, but it seems this code is designed explicitly to import one or more implementations and loading them dynamically. What would happen if the file were empty? Is your program dependent upon them? Commented Jul 23, 2017 at 9:29
  • If config.txt is empty, then, printf(" We cannot handle this kind of files\n"); executes, shown here So, if config.txt is empty, then application cannot support any image file as there is no corresponding service injected, on restart of my application ), for any input(image file) by user. So, if config.txt is empty, then application cannot support any image file as there is no corresponding service injected, on restart of my application Commented Jul 23, 2017 at 9:41
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    If that's the purpose of the app, and nothing else gets done without a handler in the config file, then it could be considered dependency injection. After all, this is similar to the methods used by some IoC containers, where dependencies can be registered in config files. Commented Jul 23, 2017 at 9:42