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BREAKING: Add Print::availableForWrite method (#7658)

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* Add Print::availableForWrite method

Adds an availableForWrite() method to the Print class, matching current
ArduinoCore-API commit 398e70f188e2b861c10d9ffe5e2bfcb6a4a4f489 .

Hook availableForWrite into the SDFS filesystem (other FSes don't have
this capability built-in).

Fixes #7650

* WiFiClient::availableForWrite proto matching Print

* Fix Netdump signedness warning

* Clean up Serial availableForWrite

This is evidently a breaking change due to the type difference.
Arduino's `availableForWrite` returns an `int`, while the
(multiply-implemented, non-virtual) core `availableForWrite` returned
`size_t`.
This commit is contained in:
Earle F. Philhower, III
2020-10-27 03:55:42 -07:00
committed by GitHub
parent 95de525af9
commit 7f38e141c7
10 changed files with 28 additions and 9 deletions
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cores/esp8266/FSImpl.h
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@ -35,6 +35,7 @@ public:
virtual bool seek(uint32_t pos, SeekMode mode) = 0;
virtual size_t position() const = 0;
virtual size_t size() const = 0;
virtual int availableForWrite() { return 0; }
virtual bool truncate(uint32_t size) = 0;
virtual void close() = 0;
virtual const char* name() const = 0;