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Moving write errors out of return value into separate API methods.

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write(), print(), println() now return size_t (and don't use negative values to signal errors).
Print adds writeError() for checking for write errors, clearWriteError() to reset the flag to false, and a protected setWriteError() for signalling errors.

http://code.google.com/p/arduino/issues/detail?id=598
This commit is contained in:
David A. Mellis
2011-08-26 16:08:14 -04:00
parent 929597375b
commit b73cf39d94
23 changed files with 184 additions and 173 deletions
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6
libraries/SD/SD.h
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@ -32,9 +32,9 @@ public:
File(SdFile f, char *name); // wraps an underlying SdFile
File(void); // 'empty' constructor
~File(void); // destructor
virtual ssize_t write(uint8_t);
virtual ssize_t write(const char *str);
virtual ssize_t write(const uint8_t *buf, size_t size);
virtual size_t write(uint8_t);
virtual size_t write(const char *str);
virtual size_t write(const uint8_t *buf, size_t size);
virtual int read();
virtual int peek();
virtual int available();