Grand test fixup (#138)

* start fixing up tests

* fix up tests + automate with drone

* fiddle with linting

* messing about with drone.yml

* some more fiddling

* hmmm

* add cache

* add vendor directory

* verbose

* ci updates

* update some little things

* update sig

vendor/github.com/dsoprea/go-iptc/standard.go

@@ -0,0 +1,101 @@
+package iptc
+
+import (
+	"errors"
+)
+
+// StreamTagInfo encapsulates the properties of each tag.
+type StreamTagInfo struct {
+	// Description is the human-readable description of the tag.
+	Description string
+}
+
+var (
+	standardTags = map[StreamTagKey]StreamTagInfo{
+		{1, 120}: {"ARM Identifier"},
+
+		{1, 122}: {"ARM Version"},
+		{2, 0}:   {"Record Version"},
+		{2, 3}:   {"Object Type Reference"},
+		{2, 4}:   {"Object Attribute Reference"},
+		{2, 5}:   {"Object Name"},
+		{2, 7}:   {"Edit Status"},
+		{2, 8}:   {"Editorial Update"},
+		{2, 10}:  {"Urgency"},
+		{2, 12}:  {"Subject Reference"},
+		{2, 15}:  {"Category"},
+		{2, 20}:  {"Supplemental Category"},
+		{2, 22}:  {"Fixture Identifier"},
+		{2, 25}:  {"Keywords"},
+		{2, 26}:  {"Content Location Code"},
+		{2, 27}:  {"Content Location Name"},
+		{2, 30}:  {"Release Date"},
+		{2, 35}:  {"Release Time"},
+		{2, 37}:  {"Expiration Date"},
+		{2, 38}:  {"Expiration Time"},
+		{2, 40}:  {"Special Instructions"},
+		{2, 42}:  {"Action Advised"},
+		{2, 45}:  {"Reference Service"},
+		{2, 47}:  {"Reference Date"},
+		{2, 50}:  {"Reference Number"},
+		{2, 55}:  {"Date Created"},
+		{2, 60}:  {"Time Created"},
+		{2, 62}:  {"Digital Creation Date"},
+		{2, 63}:  {"Digital Creation Time"},
+		{2, 65}:  {"Originating Program"},
+		{2, 70}:  {"Program Version"},
+		{2, 75}:  {"Object Cycle"},
+		{2, 80}:  {"By-line"},
+		{2, 85}:  {"By-line Title"},
+		{2, 90}:  {"City"},
+		{2, 92}:  {"Sublocation"},
+		{2, 95}:  {"Province/State"},
+		{2, 100}: {"Country/Primary Location Code"},
+		{2, 101}: {"Country/Primary Location Name"},
+		{2, 103}: {"Original Transmission Reference"},
+		{2, 105}: {"Headline"},
+		{2, 110}: {"Credit"},
+		{2, 115}: {"Source"},
+		{2, 116}: {"Copyright Notice"},
+		{2, 118}: {"Contact"},
+		{2, 120}: {"Caption/Abstract"},
+		{2, 122}: {"Writer/Editor"},
+		{2, 125}: {"Rasterized Caption"},
+		{2, 130}: {"Image Type"},
+		{2, 131}: {"Image Orientation"},
+		{2, 135}: {"Language Identifier"},
+		{2, 150}: {"Audio Type"},
+		{2, 151}: {"Audio Sampling Rate"},
+		{2, 152}: {"Audio Sampling Resolution"},
+		{2, 153}: {"Audio Duration"},
+		{2, 154}: {"Audio Outcue"},
+		{2, 200}: {"ObjectData Preview File Format"},
+		{2, 201}: {"ObjectData Preview File Format Version"},
+		{2, 202}: {"ObjectData Preview Data"},
+		{7, 10}:  {"Size Mode"},
+		{7, 20}:  {"Max Subfile Size"},
+		{7, 90}:  {"ObjectData Size Announced"},
+		{7, 95}:  {"Maximum ObjectData Size"},
+		{8, 10}:  {"Subfile"},
+		{9, 10}:  {"Confirmed ObjectData Size"},
+	}
+)
+
+var (
+	// ErrTagNotStandard indicates that the given tag is not known among the
+	// documented standard set.
+	ErrTagNotStandard = errors.New("not a standard tag")
+)
+
+// GetTagInfo return the info for the given tag. Returns ErrTagNotStandard if
+// not known.
+func GetTagInfo(recordNumber, datasetNumber int) (sti StreamTagInfo, err error) {
+	stk := StreamTagKey{uint8(recordNumber), uint8(datasetNumber)}
+
+	sti, found := standardTags[stk]
+	if found == false {
+		return sti, ErrTagNotStandard
+	}
+
+	return sti, nil
+}