/* This is the default error handling function. Note that replacements for * this function MUST NOT RETURN, or the program will likely crash. This * function is used by default, or if the program supplies NULL for the * error function pointer in png_set_error_fn(). */ static void png_default_error(png_structp png_ptr, png_const_charp message) { png_default_warning(png_ptr, message); /* We can return because png_error calls the default handler, which is * actually OK in this case. */ }
/* This function is called whenever there is a non-fatal error. This function * should not be changed. If there is a need to handle warnings differently, * you should supply a replacement warning function and use * png_set_error_fn() to replace the warning function at run-time. */ void PNGAPI png_warning(png_const_structrp png_ptr, png_const_charp warning_message) { int offset = 0; if (png_ptr != NULL) { #ifdef PNG_ERROR_NUMBERS_SUPPORTED if ((png_ptr->flags & (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT)) != 0) #endif { if (*warning_message == PNG_LITERAL_SHARP) { for (offset = 1; offset < 15; offset++) if (warning_message[offset] == ' ') break; } } } if (png_ptr != NULL && png_ptr->warning_fn != NULL) (*(png_ptr->warning_fn))(png_constcast(png_structrp,png_ptr), warning_message + offset); else png_default_warning(png_ptr, warning_message + offset); }
/* This function is called whenever there is a non-fatal error. This function * should not be changed. If there is a need to handle warnings differently, * you should supply a replacement warning function and use * png_set_error_fn() to replace the warning function at run-time. */ void png_warning(png_structp png_ptr, png_const_charp message) { if (png_ptr->warning_fn != NULL) (*(png_ptr->warning_fn))(png_ptr, message); else png_default_warning(png_ptr, message); }
/* This function is called whenever there is a non-fatal error. This function * should not be changed. If there is a need to handle warnings differently, * you should supply a replacement warning function and use * png_set_error_fn() to replace the warning function at run-time. */ void PNGAPI png_warning(png_structp png_ptr, png_const_charp warning_message) { int offset = 0; #ifdef PNG_ERROR_NUMBERS_SUPPORTED if (png_ptr->flags&(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT)) #endif { if (*warning_message == '#') { for (offset=1; offset<15; offset++) if (*(warning_message+offset) == ' ') break; } } if (png_ptr != NULL && png_ptr->warning_fn != NULL) (*(png_ptr->warning_fn))(png_ptr, warning_message+offset); else png_default_warning(png_ptr, warning_message+offset); }