Internalize majority of cmd package (#2533)

* internalize majority of cmd package and migrate integration tests

Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>

* add internal api encoder

Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>

* create internal representation of all formats

Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>

* export capability to get default encoders

Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>

* restore test fixtures

Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>

---------

Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>

cmd/syft/internal/test/integration/test-fixtures/image-go-bin-arch-coverage/Dockerfile

@@ -0,0 +1,16 @@
+FROM golang:1.21.1@sha256:cffaba795c36f07e372c7191b35ceaae114d74c31c3763d442982e3a4df3b39e as builder
+WORKDIR /app
+COPY go.sum go.mod app.go ./
+
+RUN GOOS=linux go build -o elf .
+RUN GOOS=windows go build -o win .
+RUN GOOS=darwin go build -o macos .
+
+FROM scratch
+
+WORKDIR /tmp
+COPY --from=builder /app/elf /
+COPY --from=builder /app/win /
+COPY --from=builder /app/macos /
+
+ENTRYPOINT ["/elf"]

cmd/syft/internal/test/integration/test-fixtures/image-go-bin-arch-coverage/app.go

@@ -0,0 +1,18 @@
+//build:ignore
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"golang.org/x/net/html"
+	"golang.org/x/term"
+)
+
+var test = html.ErrBufferExceeded
+
+func main() {
+	t := term.NewTerminal(os.Stdout, "foo")
+	t.Write([]byte("hello anchore"))
+	t.Write([]byte(fmt.Sprintf("%v", test)))
+}

cmd/syft/internal/test/integration/test-fixtures/image-go-bin-arch-coverage/go.mod

@@ -0,0 +1,14 @@
+module github.com/anchore/test
+
+go 1.17
+
+require (
+	golang.org/x/net v0.0.0-20211006190231-62292e806868
+	golang.org/x/term v0.0.0-20210927222741-03fcf44c2211
+)
+
+require golang.org/x/sys v0.0.0-20211006194710-c8a6f5223071 // indirect
+
+exclude golang.org/x/net v0.0.0-20211005215030-d2e5035098b3
+
+replace golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 => golang.org/x/term v0.0.0-20210916214954-140adaaadfaf

cmd/syft/internal/test/integration/test-fixtures/image-go-bin-arch-coverage/go.sum

@@ -0,0 +1,12 @@
+golang.org/x/net v0.0.0-20211006190231-62292e806868 h1:KlOXYy8wQWTUJYFgkUI40Lzr06ofg5IRXUK5C7qZt1k=
+golang.org/x/net v0.0.0-20211006190231-62292e806868/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20211006194710-c8a6f5223071 h1:PjhxBct4MZii8FFR8+oeS7QOvxKOTZXgk63EU2XpfJE=
+golang.org/x/sys v0.0.0-20211006194710-c8a6f5223071/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210916214954-140adaaadfaf h1:Ihq/mm/suC88gF8WFcVwk+OV6Tq+wyA1O0E5UEvDglI=
+golang.org/x/term v0.0.0-20210916214954-140adaaadfaf/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=