extract scraper and subtitle writer to separate files
This commit is contained in:
parent
5163160bf3
commit
8366e4a29c
169
main.go
169
main.go
|
|
@ -2,8 +2,6 @@ package main
|
|||
|
||||
import (
|
||||
"context"
|
||||
"encoding/json"
|
||||
"errors"
|
||||
"flag"
|
||||
"fmt"
|
||||
"hash/crc32"
|
||||
|
|
@ -13,175 +11,8 @@ import (
|
|||
"os"
|
||||
"os/exec"
|
||||
"path/filepath"
|
||||
"regexp"
|
||||
"strconv"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
type loadTupContent struct {
|
||||
Title string
|
||||
VideoID string
|
||||
Interval float64
|
||||
Secs []float64
|
||||
Caps []string
|
||||
Scrsecs []float64
|
||||
Scrcaps []string
|
||||
}
|
||||
|
||||
func parse_json_floats(part []byte) ([]float64, error) {
|
||||
secsStrings := make([]string, 0)
|
||||
err := json.Unmarshal(part, &secsStrings)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
ret := make([]float64, 0, len(secsStrings))
|
||||
for _, sec := range secsStrings {
|
||||
ff, err := strconv.ParseFloat(sec, 64)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
ret = append(ret, ff)
|
||||
}
|
||||
return ret, nil
|
||||
}
|
||||
|
||||
func NewLoadTupContent(content []byte) (*loadTupContent, error) {
|
||||
|
||||
var err error
|
||||
rx := regexp.MustCompile(`videoIdMain = "([^"]+)";var interval = (\d+);var secs = (.+?);var caps = (.+?);var scrsecs = (.+?);var scrcaps = (.+?);</script>`)
|
||||
|
||||
parts := rx.FindStringSubmatch(string(content))
|
||||
if parts == nil {
|
||||
return nil, errors.New("Missing video properties in HTML page")
|
||||
}
|
||||
|
||||
if len(parts) != 7 {
|
||||
return nil, fmt.Errorf("expected len(parts)=7, got %d", len(parts))
|
||||
}
|
||||
|
||||
ltc := loadTupContent{}
|
||||
ltc.VideoID = parts[1]
|
||||
ltc.Interval, err = strconv.ParseFloat(parts[2], 64)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
ltc.Secs, err = parse_json_floats([]byte(parts[3]))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
err = json.Unmarshal([]byte(parts[4]), <c.Caps)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
ltc.Scrsecs, err = parse_json_floats([]byte(parts[5]))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
err = json.Unmarshal([]byte(parts[6]), <c.Scrcaps)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Parse the page title
|
||||
|
||||
rx = regexp.MustCompile(`(?ms)<h2 style="margin:0 0 0 0;">(.+?)</h2>`)
|
||||
parts = rx.FindStringSubmatch(string(content))
|
||||
if parts == nil {
|
||||
return nil, errors.New("Missing title in HTML page")
|
||||
}
|
||||
|
||||
if len(parts) != 2 {
|
||||
return nil, fmt.Errorf("expected len(parts)=2, got %d", len(parts))
|
||||
}
|
||||
|
||||
ltc.Title = strings.TrimSpace(parts[1])
|
||||
|
||||
return <c, nil
|
||||
}
|
||||
|
||||
func (ltc *loadTupContent) Validate() error {
|
||||
if len(ltc.Secs) != len(ltc.Caps) {
|
||||
return fmt.Errorf("secs/caps length mismatch")
|
||||
}
|
||||
|
||||
if len(ltc.Scrsecs) != len(ltc.Scrcaps) {
|
||||
return fmt.Errorf("scrsecs/scrcaps length mismatch")
|
||||
}
|
||||
|
||||
if !(len(ltc.Scrcaps) == 0 || ltc.Scrcaps[0] == "") {
|
||||
return errors.New("unsupported use of strcaps")
|
||||
}
|
||||
|
||||
if len(ltc.VideoID) == 0 {
|
||||
return errors.New("unexpected blank video ID")
|
||||
}
|
||||
|
||||
if ltc.Interval != 100.0 {
|
||||
return errors.New("unsupported non-100 duration field")
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func secs_to_srt_time(secs float64) string {
|
||||
dur := time.Duration(secs) * time.Second
|
||||
|
||||
hh := int64(dur.Hours())
|
||||
mm := int64(dur.Minutes()) - (hh * 60)
|
||||
ss := int64(dur.Seconds()) - (hh * 3600) - (mm * 60)
|
||||
ms := int64(dur.Milliseconds()) - (hh * 3600000) - (mm * 60000) - (ss * 1000)
|
||||
|
||||
return fmt.Sprintf("%02d:%02d:%02d,%03d", hh, mm, ss, ms)
|
||||
}
|
||||
|
||||
func (ltc *loadTupContent) WriteSRT(w io.Writer) error {
|
||||
/*
|
||||
|
||||
SRT file format (example from Wikipedia):
|
||||
|
||||
1
|
||||
00:02:17,440 --> 00:02:20,375
|
||||
Senator, we're making
|
||||
our final approach into Coruscant.
|
||||
|
||||
2
|
||||
00:02:20,476 --> 00:02:22,501
|
||||
Very good, Lieutenant.
|
||||
*/
|
||||
|
||||
ctr := 1
|
||||
for i := 0; i < len(ltc.Caps); i += 1 {
|
||||
if ltc.Caps[i] == "" {
|
||||
// Don't show anything
|
||||
continue
|
||||
}
|
||||
|
||||
start := secs_to_srt_time(ltc.Secs[i])
|
||||
var end string
|
||||
if i < len(ltc.Caps)-1 {
|
||||
end = secs_to_srt_time(ltc.Secs[i+1])
|
||||
} else {
|
||||
// The final subtitle. We don't know how long it should be displayed
|
||||
// for since we don't know the entire video's duration
|
||||
// FIXME supply
|
||||
// Assume 3 seconds
|
||||
end = secs_to_srt_time(ltc.Secs[i] + 3)
|
||||
}
|
||||
|
||||
fmt.Fprintf(w, "%d\n%s --> %s\n%s\n\n",
|
||||
ctr, start, end, ltc.Caps[i])
|
||||
// We emitted a message, increase the counter
|
||||
ctr += 1
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
type config struct {
|
||||
youtubeDl string
|
||||
mkvmerge string
|
||||
|
|
|
|||
|
|
@ -0,0 +1,119 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"errors"
|
||||
"fmt"
|
||||
"regexp"
|
||||
"strconv"
|
||||
"strings"
|
||||
)
|
||||
|
||||
type loadTupContent struct {
|
||||
Title string
|
||||
VideoID string
|
||||
Interval float64
|
||||
Secs []float64
|
||||
Caps []string
|
||||
Scrsecs []float64
|
||||
Scrcaps []string
|
||||
}
|
||||
|
||||
func parse_json_floats(part []byte) ([]float64, error) {
|
||||
secsStrings := make([]string, 0)
|
||||
err := json.Unmarshal(part, &secsStrings)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
ret := make([]float64, 0, len(secsStrings))
|
||||
for _, sec := range secsStrings {
|
||||
ff, err := strconv.ParseFloat(sec, 64)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
ret = append(ret, ff)
|
||||
}
|
||||
return ret, nil
|
||||
}
|
||||
|
||||
func NewLoadTupContent(content []byte) (*loadTupContent, error) {
|
||||
|
||||
var err error
|
||||
rx := regexp.MustCompile(`videoIdMain = "([^"]+)";var interval = (\d+);var secs = (.+?);var caps = (.+?);var scrsecs = (.+?);var scrcaps = (.+?);</script>`)
|
||||
|
||||
parts := rx.FindStringSubmatch(string(content))
|
||||
if parts == nil {
|
||||
return nil, errors.New("Missing video properties in HTML page")
|
||||
}
|
||||
|
||||
if len(parts) != 7 {
|
||||
return nil, fmt.Errorf("expected len(parts)=7, got %d", len(parts))
|
||||
}
|
||||
|
||||
ltc := loadTupContent{}
|
||||
ltc.VideoID = parts[1]
|
||||
ltc.Interval, err = strconv.ParseFloat(parts[2], 64)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
ltc.Secs, err = parse_json_floats([]byte(parts[3]))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
err = json.Unmarshal([]byte(parts[4]), <c.Caps)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
ltc.Scrsecs, err = parse_json_floats([]byte(parts[5]))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
err = json.Unmarshal([]byte(parts[6]), <c.Scrcaps)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Parse the page title
|
||||
|
||||
rx = regexp.MustCompile(`(?ms)<h2 style="margin:0 0 0 0;">(.+?)</h2>`)
|
||||
parts = rx.FindStringSubmatch(string(content))
|
||||
if parts == nil {
|
||||
return nil, errors.New("Missing title in HTML page")
|
||||
}
|
||||
|
||||
if len(parts) != 2 {
|
||||
return nil, fmt.Errorf("expected len(parts)=2, got %d", len(parts))
|
||||
}
|
||||
|
||||
ltc.Title = strings.TrimSpace(parts[1])
|
||||
|
||||
return <c, nil
|
||||
}
|
||||
|
||||
func (ltc *loadTupContent) Validate() error {
|
||||
if len(ltc.Secs) != len(ltc.Caps) {
|
||||
return fmt.Errorf("secs/caps length mismatch")
|
||||
}
|
||||
|
||||
if len(ltc.Scrsecs) != len(ltc.Scrcaps) {
|
||||
return fmt.Errorf("scrsecs/scrcaps length mismatch")
|
||||
}
|
||||
|
||||
if !(len(ltc.Scrcaps) == 0 || ltc.Scrcaps[0] == "") {
|
||||
return errors.New("unsupported use of strcaps")
|
||||
}
|
||||
|
||||
if len(ltc.VideoID) == 0 {
|
||||
return errors.New("unexpected blank video ID")
|
||||
}
|
||||
|
||||
if ltc.Interval != 100.0 {
|
||||
return errors.New("unsupported non-100 duration field")
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,61 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"io"
|
||||
"time"
|
||||
)
|
||||
|
||||
func secs_to_srt_time(secs float64) string {
|
||||
dur := time.Duration(secs) * time.Second
|
||||
|
||||
hh := int64(dur.Hours())
|
||||
mm := int64(dur.Minutes()) - (hh * 60)
|
||||
ss := int64(dur.Seconds()) - (hh * 3600) - (mm * 60)
|
||||
ms := int64(dur.Milliseconds()) - (hh * 3600000) - (mm * 60000) - (ss * 1000)
|
||||
|
||||
return fmt.Sprintf("%02d:%02d:%02d,%03d", hh, mm, ss, ms)
|
||||
}
|
||||
|
||||
func (ltc *loadTupContent) WriteSRT(w io.Writer) error {
|
||||
/*
|
||||
|
||||
SRT file format (example from Wikipedia):
|
||||
|
||||
1
|
||||
00:02:17,440 --> 00:02:20,375
|
||||
Senator, we're making
|
||||
our final approach into Coruscant.
|
||||
|
||||
2
|
||||
00:02:20,476 --> 00:02:22,501
|
||||
Very good, Lieutenant.
|
||||
*/
|
||||
|
||||
ctr := 1
|
||||
for i := 0; i < len(ltc.Caps); i += 1 {
|
||||
if ltc.Caps[i] == "" {
|
||||
// Don't show anything
|
||||
continue
|
||||
}
|
||||
|
||||
start := secs_to_srt_time(ltc.Secs[i])
|
||||
var end string
|
||||
if i < len(ltc.Caps)-1 {
|
||||
end = secs_to_srt_time(ltc.Secs[i+1])
|
||||
} else {
|
||||
// The final subtitle. We don't know how long it should be displayed
|
||||
// for since we don't know the entire video's duration
|
||||
// FIXME supply
|
||||
// Assume 3 seconds
|
||||
end = secs_to_srt_time(ltc.Secs[i] + 3)
|
||||
}
|
||||
|
||||
fmt.Fprintf(w, "%d\n%s --> %s\n%s\n\n",
|
||||
ctr, start, end, ltc.Caps[i])
|
||||
// We emitted a message, increase the counter
|
||||
ctr += 1
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
Loading…
Reference in New Issue