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stl: improve error messages #128

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8680c09
stl: improve error messages
dlecorfec Aug 26, 2025
83deaf3
stl: ignore atoi errors when parsing totalNumberOfDisks and diskSeque…
dlecorfec Sep 12, 2025
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38 changes: 19 additions & 19 deletions stl.go
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Original file line number Diff line number Diff line change
Expand Up @@ -444,96 +444,96 @@ func parseGSIBlock(b []byte) (g *gsiBlock, err error) {
// Creation date
if v := strings.TrimSpace(string(b[224:230])); len(v) > 0 {
if g.creationDate, err = time.Parse("060102", v); err != nil {
err = fmt.Errorf("astisub: parsing date %s failed: %w", v, err)
err = fmt.Errorf("creationDate: parsing date %s failed: %w", v, err)
return
}
}

// Revision date
if v := strings.TrimSpace(string(b[230:236])); len(v) > 0 {
if g.revisionDate, err = time.Parse("060102", v); err != nil {
err = fmt.Errorf("astisub: parsing date %s failed: %w", v, err)
err = fmt.Errorf("revisionDate: parsing date %s failed: %w", v, err)
return
}
}

// Revision number
if v := strings.TrimSpace(string(b[236:238])); len(v) > 0 {
if g.revisionNumber, err = strconv.Atoi(v); err != nil {
err = fmt.Errorf("astisub: atoi of %s failed: %w", v, err)
err = fmt.Errorf("revisionNumber: atoi of %s failed: %w", v, err)
return
}
}

// Total number of TTI blocks
if v := strings.TrimSpace(string(b[238:243])); len(v) > 0 {
if g.totalNumberOfTTIBlocks, err = strconv.Atoi(v); err != nil {
err = fmt.Errorf("astisub: atoi of %s failed: %w", v, err)
err = fmt.Errorf("totalNumberOfTTIBlocks: atoi of %s failed: %w", v, err)
return
}
}

// Total number of subtitles
if v := strings.TrimSpace(string(b[243:248])); len(v) > 0 {
if g.totalNumberOfSubtitles, err = strconv.Atoi(v); err != nil {
err = fmt.Errorf("astisub: atoi of %s failed: %w", v, err)
err = fmt.Errorf("totalNumberOfSubtitles: atoi of %s failed: %w", v, err)
return
}
}

// Total number of subtitle groups
if v := strings.TrimSpace(string(b[248:251])); len(v) > 0 {
if g.totalNumberOfSubtitleGroups, err = strconv.Atoi(v); err != nil {
err = fmt.Errorf("astisub: atoi of %s failed: %w", v, err)
err = fmt.Errorf("totalNumberOfSubtitleGroups: atoi of %s failed: %w", v, err)
return
}
}

// Maximum number of displayable characters in any text row
if v := strings.TrimSpace(string(b[251:253])); len(v) > 0 {
if g.maximumNumberOfDisplayableCharactersInAnyTextRow, err = strconv.Atoi(v); err != nil {
err = fmt.Errorf("astisub: atoi of %s failed: %w", v, err)
err = fmt.Errorf("maximumNumberOfDisplayableCharactersInAnyTextRow: atoi of %s failed: %w", v, err)
return
}
}

// Maximum number of displayable rows
if v := strings.TrimSpace(string(b[253:255])); len(v) > 0 {
if g.maximumNumberOfDisplayableRows, err = strconv.Atoi(v); err != nil {
err = fmt.Errorf("astisub: atoi of %s failed: %w", v, err)
err = fmt.Errorf("maximumNumberOfDisplayableRows: atoi of %s failed: %w", v, err)
return
}
}

// Timecode start of programme
if v := strings.TrimSpace(string(b[256:264])); len(v) > 0 {
if g.timecodeStartOfProgramme, err = parseDurationSTL(v, g.framerate); err != nil {
err = fmt.Errorf("astisub: parsing of stl duration %s failed: %w", v, err)
err = fmt.Errorf("timecodeStartOfProgramme: parsing of stl duration %s failed: %w", v, err)
return
}
}

// Timecode first in cue
if v := strings.TrimSpace(string(b[264:272])); len(v) > 0 {
if g.timecodeFirstInCue, err = parseDurationSTL(v, g.framerate); err != nil {
err = fmt.Errorf("astisub: parsing of stl duration %s failed: %w", v, err)
err = fmt.Errorf("timecodeFirstInCue: parsing of stl duration %s failed: %w", v, err)
return
}
}

// Total number of disks
if v := strings.TrimSpace(string(b[272])); len(v) > 0 {
if g.totalNumberOfDisks, err = strconv.Atoi(v); err != nil {
err = fmt.Errorf("astisub: atoi of %s failed: %w", v, err)
return
g.totalNumberOfDisks = 1
err = nil
}
}

// Disk sequence number
if v := strings.TrimSpace(string(b[273])); len(v) > 0 {
if g.diskSequenceNumber, err = strconv.Atoi(v); err != nil {
err = fmt.Errorf("astisub: atoi of %s failed: %w", v, err)
return
g.diskSequenceNumber = 1
err = nil
}
}
return
Expand Down Expand Up @@ -587,28 +587,28 @@ func parseDurationSTL(i string, framerate int) (d time.Duration, err error) {
// Parse hours
var hours, hoursString = 0, i[0:2]
if hours, err = strconv.Atoi(hoursString); err != nil {
err = fmt.Errorf("astisub: atoi of %s failed: %w", hoursString, err)
err = fmt.Errorf("hours: atoi of %s failed: %w", hoursString, err)
return
}

// Parse minutes
var minutes, minutesString = 0, i[2:4]
if minutes, err = strconv.Atoi(minutesString); err != nil {
err = fmt.Errorf("astisub: atoi of %s failed: %w", minutesString, err)
err = fmt.Errorf("minutes: atoi of %s failed: %w", minutesString, err)
return
}

// Parse seconds
var seconds, secondsString = 0, i[4:6]
if seconds, err = strconv.Atoi(secondsString); err != nil {
err = fmt.Errorf("astisub: atoi of %s failed: %w", secondsString, err)
err = fmt.Errorf("seconds: atoi of %s failed: %w", secondsString, err)
return
}

// Parse frames
var frames, framesString = 0, i[6:8]
if frames, err = strconv.Atoi(framesString); err != nil {
err = fmt.Errorf("astisub: atoi of %s failed: %w", framesString, err)
err = fmt.Errorf("frames: atoi of %s failed: %w", framesString, err)
return
}

Expand Down Expand Up @@ -832,7 +832,7 @@ func newSTLCharacterHandler(characterCodeTable uint16) (*stlCharacterHandler, er
m: v,
}, nil
}
return nil, fmt.Errorf("astisub: table doesn't exist for character code table %d", characterCodeTable)
return nil, fmt.Errorf("table doesn't exist for character code table %d", characterCodeTable)
}

// TODO Use this instead of encodeTextSTL => use in teletext process like for decode
Expand Down