Initial public commit

.gitignore

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+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+*.test
+*.prof
+
+# vim
+[._]*.s[a-w][a-z]
+[._]s[a-w][a-z]
+*.un~
+Session.vim
+.netrwhist
+*~
+
+# go-fuzz
+workdir
+fit-fuzz.zip
+
+# binaries
+cmd/fitgenprofile/fitgenprofile
+cmd/stringer/stringer

.travis.yml

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+language: go
+
+go:
+  - 1.4
+  - 1.5

CONTRIBUTING.md

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+# Contributing
+
+I'm grateful for any help, whether it's code, documentation, or spelling
+corrections.
+
+## Filing issues
+
+Please report at least Go version, operating system and processor architecture
+when filing an issue.
+
+## Contributing code
+
+Please follow standard Go conventions and make sure that invoking ```make``` in
+the root directory reports no errors.

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2015 Tormod Erevik Lea
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

Makefile

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+.PHONY: \
+	all \
+	test \
+	testrace \
+	bench \
+	fmt \
+	vet \
+	lint \
+	style \
+	fitgenprofile \
+	gofuzz \
+	gofuzzclean \
+	clean \
+	profcpu \
+	profmem \
+	profobj \
+	mdgen \
+
+all: fmt vet test testrace
+
+test:
+	go test -v ./...
+
+testrace: test
+	go test -v -race ./...
+
+bench:
+	go test -v -run NONE -bench .
+
+fmt:
+	gofmt -l -s . dyncrc16 cmd/fitgen cmd/fitgen/internal/profile
+
+vet:
+	go vet ./...
+
+lint:
+	golint . | \
+		grep -v types_string.go | \
+		grep -v types.go | \
+		grep -v types_man.go | \
+		grep -v messages.go | \
+		grep -v profile.go | \
+		grep -v stringer.go | \
+		grep -v fileId | \
+		grep -v FileId
+	golint dyncrc16
+	golint cmd/fitgen
+
+style: fmt vet lint
+
+fitgen:
+	go install github.com/tormoder/gofit/cmd/fitgen
+
+gofuzz:
+	go get -u github.com/dvyukov/go-fuzz/go-fuzz
+	go get -u github.com/dvyukov/go-fuzz/go-fuzz-build
+	go-fuzz-build github.com/tormoder/gofit
+
+gofuzzclean: gofuzz
+	rm -rf workdir/
+	mkdir -p workdir/corpus
+	cp testdata/me/activity-small-fenix2-run.fit workdir/corpus/
+	cp testdata/fitsdk/Activity.fit workdir/corpus/
+	cp testdata/fitsdk/Settings.fit workdir/corpus/
+
+clean:
+	rm -rf profile/*.csv
+	rm -rf profile/*.xlsx
+	rm -f fit-fuzz.zip
+	rm -f *.prof
+	rm -f *.test
+
+profcpu:
+	go test -run=NONE -bench=ActivitySmall -cpuprofile cpu.prof
+	go tool pprof gofit.test cpu.prof
+
+profmem:
+	go test -run=NONE -bench=ActivitySmall -memprofile allocmem.prof
+	go tool pprof -alloc_space gofit.test allocmem.prof
+
+profobj:
+	go test -run=NONE -bench=ActivitySmall -memprofile allocobj.prof
+	go tool pprof -alloc_objects gofit.test allocobj.prof
+
+mdgen:
+	godoc2md github.com/tormoder/gofit Fit Header CheckIntegrity > MainApiReference.md

README.md

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+# gofit
+
+[![license](http://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/tormoder/gofit/raw/master/LICENSE)
+[![GoDoc](https://godoc.org/github.com/tormoder/gofit?status.svg)](https://godoc.org/github.com/tormoder/gofit)
+[![Build Status](https://travis-ci.org/tormoder/gofit.svg?branch=master)](https://travis-ci.org/tormoder/gofit)
+
+<img src="https://raw.githubusercontent.com/hackraft/gophericons/master/png/2.png" width="225" align="right" hspace="25" />
+
+**This library is at the moment very much in flux.**
+
+gofit is a [Go](http://www.golang.org/) package that implements decoding of the
+[Flexible and Interoperable Data Transfer (FIT)
+Protocol](http://www.thisisant.com/resources/fit). Fit is a "compact binary
+format designed for storing and sharing data from sport, fitness and health
+devices". Fit files are created by newer GPS enabled Garmin sport watches and
+cycling computers, such as their Forerunner/Edge/Fenix series. gofit supports
+generating Go code for custom FIT product profiles.
+
+**Current supported FIT SDK version:** 16.10
+
+### About gofit
+
+- [Example Usage](https://github.com/tormoder/gofit/wiki/Example-Usage)
+- [Data Types](https://github.com/tormoder/gofit/wiki/Data-Types)
+- [Main API Reference](https://github.com/tormoder/gofit/wiki/Main-Api-Reference)
+- [Custom Product Profiles](https://github.com/tormoder/gofit/wiki/Custom-Product-Profiles)
+- [Upcoming Features](https://github.com/tormoder/gofit/wiki/Upcoming-Features)
+- [Contributing](https://github.com/tormoder/gofit/blob/master/CONTRIBUTING.md)
+- [License](https://github.com/tormoder/gofit/wiki/License.md)

base_types.go

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+package fit
+
+const baseTypeNumMask = 0x1F
+
+type fitBaseType byte
+
+const (
+	fitEnum    fitBaseType = 0x00
+	fitSint8   fitBaseType = 0x01 // 2's complement format
+	fitUint8   fitBaseType = 0x02
+	fitSint16  fitBaseType = 0x83 // 2's complement format
+	fitUint16  fitBaseType = 0x84
+	fitSint32  fitBaseType = 0x85 // 2's complement format
+	fitUint32  fitBaseType = 0x86
+	fitString  fitBaseType = 0x07 // Null terminated string encoded in UTF-8
+	fitFloat32 fitBaseType = 0x88
+	fitFloat64 fitBaseType = 0x89
+	fitUint8z  fitBaseType = 0x0A
+	fitUint16z fitBaseType = 0x8B
+	fitUint32z fitBaseType = 0x8C
+	fitByte    fitBaseType = 0x0D // Array of bytes. Field is invalid if all bytes are invalid
+)
+
+func (b fitBaseType) nr() int {
+	return int(b & baseTypeNumMask)
+}
+
+func (b fitBaseType) endianAbility() bool {
+	return bsize[b.nr()] > 0
+}
+
+func (b fitBaseType) integer() bool {
+	return binteger[b.nr()]
+}
+
+func (b fitBaseType) signed() bool {
+	return bsigned[b.nr()]
+}
+
+func (b fitBaseType) size() int {
+	return bsize[b.nr()]
+}
+
+func (b fitBaseType) String() string {
+	return bname[b.nr()]
+}
+
+var fitBaseTypes = [...]string{
+	"enum",
+	"sint8",
+	"uint8",
+	"sint16",
+	"uint16",
+	"sint32",
+	"uint32",
+	"string",
+	"float32",
+	"float64",
+	"uint8z",
+	"uint16z",
+	"uint32z",
+	"byte",
+}
+
+var bsize = [...]int{
+	1,
+	1,
+	1,
+	2,
+	2,
+	4,
+	4,
+	1,
+	4,
+	8,
+	1,
+	2,
+	4,
+	1,
+}
+
+var bname = [...]string{
+	"enum",
+	"sint8",
+	"uint8",
+	"sint16",
+	"uint16",
+	"sint32",
+	"uint32",
+	"string",
+	"float32",
+	"float64",
+	"uint8z",
+	"uint16z",
+	"uint32z",
+	"byte",
+}
+
+var binteger = [...]bool{
+	false,
+	true,
+	true,
+	true,
+	true,
+	true,
+	true,
+	false,
+	false,
+	false,
+	true,
+	true,
+	true,
+	false,
+}
+
+var bsigned = [...]bool{
+	false,
+	true,
+	false,
+	true,
+	false,
+	true,
+	false,
+	false,
+	true,
+	true,
+	false,
+	false,
+	false,
+	false,
+}

cmd/fitgen/README.md

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+# fitgen
+
+```fitgen``` is a program that given a FIT profile generates Go code for
+[gofit](https://github.com/tormoder/gofit). It takes as input the official FIT profile
+specification workbook and outputs Go type, message and profile definitions.
+
+Consult the [Wiki](https://github.com/tormoder/gofit/wiki/Profile-Generation)
+for information about profile generation.
+
+```fitgen``` has only been tested on Linux x86-64.
+
+## Prerequisites
+
+* ```$GOPATH``` set.
+* Python 3 available in ```$PATH``` (xlsx to csv conversion).
+* [xlrd](https://pypi.python.org/pypi/xlrd) Python library (xlsx to csv conversion).  
+* FIT SDK Zip file available.
+
+## Usage
+
+```shell
+usage: fitgenprofile [-keep] [path to sdk zip, xls or xlsx file]
+  -jmptable
+	use jump tables for profile message and field lookups, otherwise use switches (default true)
+  -keep
+	don't delete intermediary workbook and csv files from profile directory
+  -sdk string
+	provide or override SDK version printed in generated code
+```