85 lines
2.1 KiB
85 lines
2.1 KiB
# HostOS
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The `HostOS` extension is not all that useful in itself, rather, it is a
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building block other plugins and extensions can use to not repeat the same
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guesswork and logic.
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The goal is to have a single place that remembers the host OS, whether set by
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the end-user in a Sketch, or via a macro, or some other way. This information
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can then be reused by other plugins.
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See the [Unicode][plugin:unicode] extension for an example about how to use
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`HostOS` in practice.
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[plugin:unicode]: Unicode.md
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## Using the extension
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The extension provides a `HostOS` singleton object.
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```c++
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#include <Kaleidoscope.h>
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#include <Kaleidoscope-HostOS.h>
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void someFunction(void) {
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if (HostOS.os() == kaleidoscope::hostos::LINUX) {
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// do something linux-y
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}
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if (HostOS.os() == kaleidoscope::hostos::OSX) {
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// do something OSX-y
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}
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}
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KALEIDOSCOPE_INIT_PLUGINS(HostOS)
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void setup(void) {
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Kaleidoscope.setup ();
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}
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```
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## Extension methods
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The extension provides the following methods on the `HostOS` singleton:
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### `.os()`
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> Returns the stored type of the Host OS.
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### `.os(type)`
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> Sets the type of the host OS, overriding any previous value. The type is then
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> stored in EEPROM for persistence.
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## Host OS Values
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The OS type (i.e. the return type of `.os()` and the arguments to `.os(type)`) will be one of the following:
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- `kaleidoscope::hostos::LINUX`
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- `kaleidoscope::hostos::OSX`
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- `kaleidoscope::hostos::WINDOWS`
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- `kaleidoscope::hostos::OTHER`
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## Focus commands
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The plugin provides the `FocusHostOSCommand` object, which, when enabled,
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provides the `hostos.type` Focus command.
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### `hostos.type [type]`
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> Without argument, returns the current OS type set (a numeric value).
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>
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> With an argument, it sets the OS type.
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>
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> This command can be used from the host to reliably set the OS type within the firmware.
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## Dependencies
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* [Kaleidoscope-EEPROM-Settings](EEPROM-Settings.md)
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## Further reading
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Starting from the [example][plugin:example] is the recommended way of getting
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started with the extension.
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[plugin:example]: ../../examples/Features/HostOS/HostOS.ino
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