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https://git.planet-casio.com/Lephenixnoir/fxsdk.git
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66 lines
2.7 KiB
C
66 lines
2.7 KiB
C
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//---
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// fxlink:properties - Detected models and properties of devices
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//---
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#ifndef FXLINK_PROPERTIES_H
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#define FXLINK_PROPERTIES_H
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdio.h>
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/* properties_t: Type of properties that can be detected on a device
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This structure lists all the properties that fxlink can detect on connected
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devices. These properties help identify the devices in interactive use, and
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accurately specify which calculators to interact with when several models
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are connected simultaneously or when the same command in run against
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different models in a script.
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Depending on the backend and access privileges, not all properties can be
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detected. The backends supporting each property are listed in brackets at
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the end of each description.
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An instance of this structure can also be used as a filter. In order for the
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semantics of filtering to work out, every attribute needs to have a "total
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information order", meaning that two values can be compared for how specific
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they are. A device will match a filter if and only if all of its properties
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are more specific than the values provided in the filter.
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Currently the order is "true more specific than false" for all booleans and
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"any value more specific than NULL" for the serial number. Properties that
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cannot be detected by back-ends are reset to their least specific value (ie.
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ignored). */
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typedef struct {
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/* The calculator is a Protocol 7 calculator (idProduct: 0x6101). This
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makes no sense in UDisks2 as a P7 calculator has no disks, therefore
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this property is always false in UDisks2. [libusb, udisks2] */
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bool p7;
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/* The calculator is a Mass Storage calculator (idProduct: 0x6102). All
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devices detected in UDisks2 are of this type. [libusb, udisks2] */
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bool mass_storage;
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/* The calculator is an fx-CG series. [udisks2] */
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bool series_cg;
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/* The calculator is a G-III series. [udisks2] */
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bool series_g3;
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/* Serial number. This can only be obtained in libusb if the user has
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write access to the device, because libusb needs to send a request for
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the STRING descriptor holding the serial number. [libusb, udisks2] */
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char *serial_number;
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} properties_t;
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/* properties_match(): Check whether some properties match a given option
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Returns true if (props) is more specific than (option), meaning that every
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property mentioned in (option) is indeed set in (props). This is a building
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block for filter_match() and probably doesn't need to be used directly. */
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bool properties_match(properties_t const *props, properties_t const *option);
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/* properties_print(): Print a property set (one-line) */
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void properties_print(FILE *fp, properties_t const *props);
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#endif /* FXLINK_PROPERTIES_H */
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