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write(), print(), and println() now return number of bytes written.

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The type is long, and negative values indicate errors.  Needs more testing.
http://code.google.com/p/arduino/issues/detail?id=551
This commit is contained in:
David A. Mellis
2011-08-23 19:12:03 -04:00
parent b788ad593f
commit 8059abe581
24 changed files with 290 additions and 174 deletions
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19
libraries/SD/File.cpp
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@ -58,19 +58,20 @@ boolean File::isDirectory(void) {
}
void File::write(uint8_t val) {
if (_file)
_file->write(val);
long File::write(uint8_t val) {
return write(&val, 1);
}
void File::write(const char *str) {
if (_file)
_file->write(str);
long File::write(const char *str) {
return write((const uint8_t *) str, strlen(str));
}
void File::write(const uint8_t *buf, size_t size) {
if (_file)
_file->write(buf, size);
long File::write(const uint8_t *buf, size_t size) {
long t;
if (!_file) return -1;
t = _file->write(buf, size);
if (t < 0) return t - 1;
return t;
}
int File::peek() {