Notifications: replace newlines in label-copy instead of const char* title directly #976
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In this case, it's not clear if we use the strchr() function from the C library ( According to CLion, strchr() comes from string.h, which is the C version that does not define a However, even if we are using the C version, we still modify the content of the string I guess the intent of the code was to avoid the copy and the memory overhead of std::string (with potential dynamic allocation). I'm wondering : is there any other solution that would respect the constness that does not need a std::string temporary variable? |
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Found a solution: Also removed an unused struct in |
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Did you check that it actually works? The text buffer is edited, but LVGL is not aware of that change. According to the code of |
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It worked in the simulator, but I'll add the |
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Did you check with notification title that contains a \n character? |
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Yes, but only on the Simulator, as it is easier for me to get a notification with a title with newlines there The shown notification has as input the following title-message-pair: "category\nUnknown",
"Lorem ipsum\ndolor sit amet,\nconsectetur adipiscing elit,\n",
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If the newline is replaced, dolor should be on the first line right?
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The newline is only replaced in the title (the |
InfiniTimeOrg/InfiniTime#976 splits SystemMonitor.h into a h and cpp file. Add the cpp file to the infinisim target.
…title The variable `title` is defined as `const char*`, which means, that `strchr()` returns a `const char*` as well according to https://www.cplusplus.com/reference/cstring/strchr/ But in the same line the return value is assigned to a non-const `char*`, which shouldn't be allowed (error with `-pedantic`). Because the `lv_label` creates an internal copy of the title sting, just modify that one instead and replace newline in the copied string.
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rebased on current |
InfiniTimeOrg/InfiniTime#976 splits SystemMonitor.h into a h and cpp file. Add the cpp file to the infinisim target.
InfiniTimeOrg/InfiniTime#976 splits SystemMonitor.h into a h and cpp file. Add the cpp file to the infinisim target.
The variable
titleis defined asconst char*, which means, thatstrchr()returns aconst char*as well according tohttps://www.cplusplus.com/reference/cstring/strchr/
But in the same line the return value is assigned to a non-const
char*, which shouldn't be allowed (error with-pedantic).To prevent manual memory management just use
std::stringto copy theprovided title and replace newlines in the copied string.