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Merge pull request #34 from dbarbuzzi/bugfix/change-concat-approach
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,206 @@ | ||
| package main | ||
|
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| import ( | ||
| "fmt" | ||
| "io/ioutil" | ||
| "log" | ||
| "regexp" | ||
|
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| "github.com/BurntSushi/toml" | ||
| "github.com/pkg/errors" | ||
| ) | ||
|
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| // Config represents a config object containing everything needed to download a VOD | ||
| type Config struct { | ||
| AuthToken string | ||
| ClientID string | ||
| Quality string | ||
| StartTime string | ||
| StartSec int | ||
| EndTime string | ||
| EndSec int | ||
| Length string | ||
| VodID int | ||
| FilePrefix string | ||
| OutputFolder string | ||
| Workers int | ||
| } | ||
|
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| // Privatize returns a copy of the struct with the ClientID field censored (e.g. for logging) | ||
| func (c Config) Privatize() Config { | ||
| c2 := c | ||
| c2.AuthToken = "********" | ||
| c2.ClientID = "********" | ||
| return c2 | ||
| } | ||
|
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| // Update replaces any config values in the base object with those present in the passed argument | ||
| func (c *Config) Update(c2 Config) { | ||
| if c2.AuthToken != "" { | ||
| c.AuthToken = c2.AuthToken | ||
| } | ||
| if c2.ClientID != "" { | ||
| c.ClientID = c2.ClientID | ||
| } | ||
| if c2.Quality != "" { | ||
| c.Quality = c2.Quality | ||
| } | ||
| if c2.StartTime != "" { | ||
| c.StartTime = c2.StartTime | ||
| } | ||
| if c2.EndTime != "" { | ||
| c.EndTime = c2.EndTime | ||
| } | ||
| if c2.Length != "" { | ||
| c.EndTime = c2.Length | ||
| } | ||
| if c2.VodID != 0 { | ||
| c.VodID = c2.VodID | ||
| } | ||
| if c2.FilePrefix != "" { | ||
| c.FilePrefix = c2.FilePrefix | ||
| } | ||
| if c2.OutputFolder != "" { | ||
| c.OutputFolder = c2.OutputFolder | ||
| } | ||
| if c2.Workers != 0 { | ||
| c.Workers = c2.Workers | ||
| } | ||
| } | ||
|
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| // Validate checks if the config object appears valid. Required attributes must | ||
| // be present and appear correct. Optional values are validated if present. | ||
| // | ||
| // Currently, "OutputFolder" is not validated (needs logic to support Windows paths) | ||
| func (c Config) Validate() error { | ||
| if len(c.AuthToken) == 0 { | ||
| return fmt.Errorf("error: AuthToken missing") | ||
| } | ||
| if len(c.ClientID) == 0 { | ||
| return fmt.Errorf("error: ClientID missing") | ||
| } | ||
|
|
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| if c.VodID < 1 { | ||
| return fmt.Errorf("error: VodID missing") | ||
| } | ||
|
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| timePattern := `\d+ \d+ \d+` | ||
| timeRegex := regexp.MustCompile(timePattern) | ||
| if c.StartTime != "start" && !timeRegex.MatchString(c.StartTime) { | ||
| return fmt.Errorf("error: StartTime must be 'start' or in format '%s'; got '%s'", timePattern, c.StartTime) | ||
| } | ||
| if c.EndTime == "" && c.Length == "" { | ||
| return errors.New("error: must specify either EndTime or Length") | ||
| } | ||
| if c.Length == "" && c.EndTime != "end" && !timeRegex.MatchString(c.EndTime) { | ||
| return fmt.Errorf("error: EndTime must be 'end' or in format '%s'; got '%s'", timePattern, c.EndTime) | ||
| } | ||
| if c.EndTime == "" && c.Length != "full" && !timeRegex.MatchString(c.Length) { | ||
| return fmt.Errorf("error: Length must be 'full' or in format '%s'; got '%s'", timePattern, c.Length) | ||
| } | ||
|
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| qualityPattern := `\d{3,4}p[36]0` | ||
| qualityRegex := regexp.MustCompile(qualityPattern) | ||
| if c.Quality != "best" && c.Quality != "chunked" && !qualityRegex.MatchString(c.Quality) { | ||
| return fmt.Errorf("error: Quality must be 'best', 'chunked', or in format '%s'; got '%s'", qualityPattern, c.Quality) | ||
| } | ||
|
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| if c.FilePrefix != "" && !isValidFilename(c.FilePrefix) { | ||
| return fmt.Errorf("error: FilePrefix contains invalid characters; got '%s'", c.FilePrefix) | ||
| } | ||
|
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| if c.Workers < 1 { | ||
| return fmt.Errorf("error: Worker must be an integer greater than 0; got '%d'", c.Workers) | ||
| } | ||
|
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| return nil | ||
| } | ||
|
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| // ResolveEndTime is a hacky way of supporting organically support the new | ||
| // 'length' option. If that prop is included, it is used to calculate & update | ||
| // EndTime prop (it is intended to override) | ||
| func (c *Config) ResolveEndTime() error { | ||
| startAt, err := timeInputToSeconds(c.StartTime) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| c.StartSec = startAt | ||
|
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| if c.Length != "" { | ||
| if c.Length == "full" { | ||
| c.EndSec = -1 | ||
| } else { | ||
| endAt, err := timeInputToSeconds(c.Length) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| c.EndSec = startAt + endAt | ||
| } | ||
| } else { | ||
| if c.EndTime == "end" { | ||
| c.EndSec = -1 | ||
| } else { | ||
| endAt, err := timeInputToSeconds(c.EndTime) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| c.EndSec = endAt | ||
| } | ||
| } | ||
|
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| return nil | ||
| } | ||
|
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| func loadConfig(f string) (Config, error) { | ||
| log.Printf("loading config file <%s>\n", f) | ||
| var config Config | ||
|
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| configData, err := ioutil.ReadFile(f) | ||
| if err != nil { | ||
| return config, errors.Wrap(err, "failed to load config file") | ||
| } | ||
|
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| err = toml.Unmarshal(configData, &config) | ||
| if err != nil { | ||
| return config, errors.Wrap(err, "failed to parse config file") | ||
| } | ||
|
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| return config, nil | ||
| } | ||
|
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| func buildConfigFromFlags() (Config, error) { | ||
| var config Config | ||
|
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| if *authToken != "" { | ||
| config.AuthToken = *authToken | ||
| } | ||
| if *clientID != "" { | ||
| config.ClientID = *clientID | ||
| } | ||
| if *quality != "" { | ||
| config.Quality = *quality | ||
| } | ||
| if *startTime != "" { | ||
| config.StartTime = *startTime | ||
| } | ||
| if *endTime != "" { | ||
| config.EndTime = *endTime | ||
| } | ||
| if *length != "" { | ||
| config.Length = *length | ||
| } | ||
| if *prefix != "" { | ||
| config.FilePrefix = *prefix | ||
| } | ||
| if *folder != "" { | ||
| config.OutputFolder = *folder | ||
| } | ||
| if *workers != 0 { | ||
| config.Workers = *workers | ||
| } | ||
| if *vodID != 0 { | ||
| config.VodID = *vodID | ||
| } | ||
|
|
||
| return config, nil | ||
| } |
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