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|
package cmd
import (
"bytes"
"flag"
"fmt"
"os"
"strings"
"github.com/andybalholm/cascadia"
)
var (
projectBinary = "html2markdown"
)
// OsExiter is the function used when the app exits. If not set defaults to os.Exit.
var OsExiter = os.Exit
// - - - - - - - - - - - - - //
type Config struct {
// args are the positional (non-flag) command-line arguments.
args []string
inputFilepath string
outputFilepath string
outputOverwrite bool
// - - - - - General - - - - - //
version bool
domain string
includeSelector cascadia.SelectorGroup
excludeSelector cascadia.SelectorGroup
// - - - - - Options - - - - - //
strongDelimiter string
// - - - - - Plugins - - - - - //
enablePluginStrikethrough bool
enablePluginTable bool
tableSkipEmptyRows bool
tableHeaderPromotion bool
tableSpanCellBehavior string
tablePresentationTables bool
}
// Release holds the information (from the 3 ldflags) that goreleaser sets.
type Release struct {
// Current Git tag (the v prefix is stripped)
Version string
// Current git commit SHA
Commit string
// Date in the RFC3339 format
Date string
}
type CLI struct {
Stdin ReadWriterWithStat
Stdout ReadWriterWithStat
Stderr ReadWriterWithStat
OsArgs []string
Release Release
isStdinPipe bool
isStdoutPipe bool
isStderrPipe bool
flags *flag.FlagSet
config Config
usageText bytes.Buffer
}
func (cli *CLI) Init() error {
var err error
cli.isStdinPipe, err = isPipe(cli.Stdin)
if err != nil {
return fmt.Errorf("error while checking stdin for is pipe: %w", err)
}
cli.isStdoutPipe, err = isPipe(cli.Stdout)
if err != nil {
return fmt.Errorf("error while checking stdout for is pipe: %w", err)
}
cli.isStderrPipe, err = isPipe(cli.Stderr)
if err != nil {
return fmt.Errorf("error while checking stderr for is pipe: %w", err)
}
cli.initFlags(cli.OsArgs[0])
err = cli.initUsageText()
if err != nil {
return fmt.Errorf("error while initializing the usage text: %w", err)
}
return nil
}
func (cli *CLI) Execute() {
warnings, err := cli.run()
for _, warning := range warnings {
cli.PrintWarn(warning)
}
if err == flag.ErrHelp {
cli.printUsage()
OsExiter(0)
return
} else if err != nil {
cli.PrintErr(err)
OsExiter(1) // General Error
return
} else {
OsExiter(0)
return
}
}
func (cli *CLI) run() ([]error, error) {
err := cli.parseFlags(cli.OsArgs[1:])
if err != nil {
return nil, err
}
if len(cli.config.args) != 0 {
return nil, NewCLIError(
fmt.Errorf("unknown arguments: %s", strings.Join(cli.config.args, " ")),
Paragraph("Here is how you can use the CLI:"),
CodeBlock(`echo "<strong>important</strong>" | html2markdown`),
)
}
if cli.config.version {
cli.printVersion()
return nil, nil
}
// - - - - - - - - - - - - - - - //
inputs, err := cli.listInputs()
if err != nil {
return nil, err
}
outputType, err := determineOutputType(cli.config.inputFilepath, len(inputs), cli.config.outputFilepath)
if err != nil {
return nil, err
}
err = ensureOutputDirectories(outputType, cli.config.outputFilepath)
if err != nil {
return nil, err
}
err = calculateOutputPaths(cli.config.inputFilepath, inputs)
if err != nil {
return nil, err
}
for _, input := range inputs {
data, err := cli.readInput(input)
if err != nil {
return nil, err
}
markdown, err := cli.convert(data)
if err != nil {
return nil, err
}
err = cli.writeOutput(outputType, input.outputFullFilepath, markdown)
if err != nil {
return nil, err
}
}
return nil, nil
}
|
