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comply/internal/render/pandoc.go
Justin McCarthy 49e950c3c0
If pandoc appears in the path, it will be preferred over Docker.
The pandoc version must be 2.2.1 or greater.

Defaults can be overridden by an optional "pandoc: pandoc"
or "pandoc: docker" in the comply.yml.
2018-05-23 16:48:35 -07:00

101 lines
2.8 KiB
Go

package render
import (
"context"
"fmt"
"os"
"os/exec"
"time"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/container"
"github.com/docker/docker/client"
"github.com/pkg/errors"
"github.com/strongdm/comply/internal/config"
)
func pandoc(outputFilename string, errOutputCh chan error) {
if config.WhichPandoc() == config.UsePandoc {
err := pandocPandoc(outputFilename)
if err != nil {
errOutputCh <- err
}
} else {
dockerPandoc(outputFilename, errOutputCh)
}
}
func dockerPandoc(outputFilename string, errOutputCh chan error) {
// TODO: switch to new args once docker image is updated
// cmd21 := []string{"-f", "markdown+smart", "--toc", "-N", "--template", "templates/default.latex", "-o", fmt.Sprintf("output/%s", outputFilename), fmt.Sprintf("output/%s.md", outputFilename)}
cmd19 := []string{"--smart", "--toc", "-N", "--template=/source/templates/default.latex", "-o",
fmt.Sprintf("/source/output/%s", outputFilename),
fmt.Sprintf("/source/output/%s.md", outputFilename)}
ctx := context.Background()
cli, err := client.NewEnvClient()
if err != nil {
errOutputCh <- errors.Wrap(err, "unable to read Docker environment")
return
}
pwd, err := os.Getwd()
if err != nil {
errOutputCh <- errors.Wrap(err, "unable to get workding directory")
return
}
hc := &container.HostConfig{
Binds: []string{pwd + ":/source"},
}
resp, err := cli.ContainerCreate(ctx, &container.Config{
Image: "strongdm/pandoc",
Cmd: cmd19},
hc, nil, "")
if err != nil {
errOutputCh <- errors.Wrap(err, "unable to create Docker container")
return
}
defer func() {
timeout := 2 * time.Second
cli.ContainerStop(ctx, resp.ID, &timeout)
err := cli.ContainerRemove(ctx, resp.ID, types.ContainerRemoveOptions{Force: true})
if err != nil {
errOutputCh <- errors.Wrap(err, "unable to remove container")
return
}
}()
if err := cli.ContainerStart(ctx, resp.ID, types.ContainerStartOptions{}); err != nil {
errOutputCh <- errors.Wrap(err, "unable to start Docker container")
return
}
_, err = cli.ContainerWait(ctx, resp.ID)
if err != nil {
errOutputCh <- errors.Wrap(err, "error awaiting Docker container")
return
}
_, err = cli.ContainerLogs(ctx, resp.ID, types.ContainerLogsOptions{ShowStdout: true})
if err != nil {
errOutputCh <- errors.Wrap(err, "error reading Docker container logs")
return
}
}
// 🐼
func pandocPandoc(outputFilename string) error {
// -f markdown+smart --toc -N --template=templates/default.latex -o output/%s output/%s.md
cmd := exec.Command("pandoc", "-f", "markdown+smart", "--toc", "-N", "--template", "templates/default.latex", "-o", fmt.Sprintf("output/%s", outputFilename), fmt.Sprintf("output/%s.md", outputFilename))
outputRaw, err := cmd.CombinedOutput()
if err != nil {
fmt.Println(string(outputRaw))
return errors.Wrap(err, "error calling pandoc")
}
return nil
}