Implemented read

[aqiank]

Just getting familiar with the source code :)

Signed-off-by: Jacky Boen aqiank@gmail.com

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This change is

[aqiank]

Hi Andreas,

I've implemented the read() part of the SerialIndex. I pulled out the data processing code into IO.cpp and IO.hpp and added test folder where I can easily test the processor against some sample data generated from test/sample.txt into test/sample.h without having to have Arduino. You should be able to test them by just running make and then ./test in the test folder. You can check out my branch at https://github.com/aqiank/serialindex/tree/boen/Arduino/serialindex.

The implementation most likely doesn't completely match what you want but can be adjusted fairly easily. For example, keys right now requires all of the characters to be alphabets and arrays aren't bound-checked because it doesn't store user's array information right now as I wanted to do as much as possible before having to allocate new memory.

Also at the moment, it validates the input before actually evaluating and setting values which means it goes through the value part of the data twice. It prevents user from mistakenly set only part of an array but if that's okay then I could get rid of it so it only has to go through the value part of the data once.

I implemented the ability to set array values partially which I call a slice right now but that can be discussed further. Its syntax currently looks like: nums={0=123} for setting one value and nums={0..3=123} for setting multiple values.

There is no heap memory used during the data processing so the only heap memory allocation operations are inside the constructor.

The code could use some DRYing up as there are a lot of pretty much identical code structures but I just keep it that way for now until we've finalized on the specifications so it's easier to change in case there's some special cases that need to be handled.

Anyway, there's still some stuff to do like bounds-checking but I believe the concept and implementation is there.

[sojamo]

awesome jacky, lets meet soon to discuss details and then merge.