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136 lines
3.2 KiB
136 lines
3.2 KiB
package parsers
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import (
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"errors"
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"git.aiterp.net/rpdata/api/models"
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"strconv"
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"strings"
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"time"
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)
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// ErrNotPost is returned by parsePost if the line is empty or not a post.
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var ErrNotPost = errors.New("not a post")
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// ErrEmptyLog is returned by ParseLog if there are no (valid) posts in the log.
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var ErrEmptyLog = errors.New("no valid posts found in log")
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// MircLog parses the log and returns the things that can be gleamed from them.
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func MircLog(data string, date time.Time, strict bool) (*ParsedLog, error) {
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lines := strings.Split(data, "\n")
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posts := make([]*models.Post, 0, len(lines))
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prev := models.Post{}
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for _, line := range lines {
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line = strings.Trim(line, "\r\t ")
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if len(line) < 1 {
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continue
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}
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post, err := MircPost(line, date, prev)
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if err != nil {
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if strict {
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return nil, err
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}
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continue
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}
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posts = append(posts, &post)
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prev = post
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}
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if len(posts) == 0 {
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return nil, ErrEmptyLog
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}
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log := models.Log{
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Date: posts[0].Time,
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}
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return &ParsedLog{log, posts}, nil
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}
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// MircPost parses a post from a mirc-like line. If the previous post is included (it can be empty), it will be used
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// to determine whether midnight has passed.
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func MircPost(line string, date time.Time, prev models.Post) (models.Post, error) {
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// Do basic validation
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line = strings.Trim(line, " \t\n\r")
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if len(line) == 0 || !strings.HasPrefix(line, "[") {
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return models.Post{}, ErrNotPost
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}
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// Parse timestamp
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tsEndIndex := strings.IndexByte(line, ']')
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if tsEndIndex == -1 || len(line) < tsEndIndex+5 {
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return models.Post{}, ErrNotPost
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}
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tsStr := line[1:tsEndIndex]
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tsSplit := strings.Split(tsStr, ":")
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tsUnits := make([]int, len(tsSplit))
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if len(tsSplit) < 2 {
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return models.Post{}, ErrNotPost
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}
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for i := range tsSplit {
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n, err := strconv.Atoi(tsSplit[i])
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if err != nil {
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return models.Post{}, ErrNotPost
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}
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tsUnits[i] = n
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}
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if len(tsUnits) == 2 {
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tsUnits = append(tsUnits, 0)
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}
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// Determine timestamp from parsed data and previous post.
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ts := time.Date(date.Year(), date.Month(), date.Day(), tsUnits[0], tsUnits[1], tsUnits[2], 0, date.Location())
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if !prev.Time.IsZero() && prev.Time.Sub(ts) > 30*time.Minute {
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ts = time.Date(prev.Time.Year(), prev.Time.Month(), prev.Time.Day()+1, tsUnits[0], tsUnits[1], tsUnits[2], 0, date.Location())
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}
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if line[tsEndIndex+2] == '*' {
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split := strings.SplitN(line[tsEndIndex+4:], " ", 2)
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if len(split) == 1 {
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return models.Post{}, ErrNotPost
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}
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post := models.Post{
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ID: "UNASSIGNED",
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LogID: "UNASSIGNED",
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Time: ts,
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Kind: "action",
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Nick: strings.TrimLeft(split[0], "+@!~"),
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Text: split[1],
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Position: prev.Position + 1,
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}
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if post.Nick[0] == '=' {
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post.Kind = "scene"
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}
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return post, nil
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} else if line[tsEndIndex+2] == '<' {
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split := strings.SplitN(line[tsEndIndex+2:], " ", 2)
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if len(split) == 1 {
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return models.Post{}, ErrNotPost
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}
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post := models.Post{
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ID: "UNASSIGNED",
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LogID: "UNASSIGNED",
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Time: ts,
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Kind: "text",
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Nick: strings.TrimLeft(split[0][1:len(split[0])-1], "+@!~"),
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Text: split[1],
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Position: prev.Position + 1,
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}
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if post.Nick[0] == '=' {
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post.Kind = "scene"
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}
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return post, nil
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} else {
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return models.Post{}, ErrNotPost
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}
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}
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