From 30c088b90e7b6a25d93cbdad7564ff063e62afd3 Mon Sep 17 00:00:00 2001
From: Nick White <git@njw.name>
Date: Fri, 25 Jan 2019 09:55:55 +0000
Subject: Reorganisation and cleanup

---
 bucket-lines/bucket.go | 129 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100644 bucket-lines/bucket.go

(limited to 'bucket-lines/bucket.go')

diff --git a/bucket-lines/bucket.go b/bucket-lines/bucket.go
new file mode 100644
index 0000000..5d9271a
--- /dev/null
+++ b/bucket-lines/bucket.go
@@ -0,0 +1,129 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"path/filepath"
+	"os"
+	"sort"
+	"strconv"
+
+	"git.rescribe.xyz/testingtools/lib/line"
+)
+
+type BucketSpec struct {
+	Min float64
+	Name string
+}
+type BucketSpecs []BucketSpec
+func (b BucketSpecs) Len() int { return len(b) }
+func (b BucketSpecs) Swap(i, j int) { b[i], b[j] = b[j], b[i] }
+func (b BucketSpecs) Less(i, j int) bool { return b[i].Min < b[j].Min }
+
+type BucketStat struct {
+	name string
+	num int
+}
+type BucketStats []BucketStat
+func (b BucketStats) Len() int { return len(b) }
+func (b BucketStats) Swap(i, j int) { b[i], b[j] = b[j], b[i] }
+func (b BucketStats) Less(i, j int) bool { return b[i].num < b[j].num }
+
+// Copies the image and text for a line into a directory based on
+// the line confidence, as defined by the buckets struct
+func bucketLine(l line.Detail, buckets BucketSpecs, dirname string) (string, error) {
+	var bucket string
+
+	todir := ""
+	for _, b := range buckets {
+		if l.Avgconf >= b.Min {
+			todir = b.Name
+			bucket = b.Name
+		}
+	}
+
+	if todir == "" {
+		return bucket, nil
+	}
+
+	avgstr := strconv.FormatFloat(l.Avgconf, 'G', -1, 64)
+	if len(avgstr) > 2 {
+		avgstr = avgstr[2:]
+	}
+
+	base := filepath.Join(dirname, todir, filepath.Base(l.OcrName) + "_" + l.Name + "_" + avgstr)
+
+	err := os.MkdirAll(filepath.Join(dirname, todir), 0700)
+	if err != nil {
+		return bucket, err
+	}
+
+	f, err := os.Create(base + ".png")
+	if err != nil {
+		return bucket, err
+	}
+	defer f.Close()
+
+	err = l.Img.CopyLineTo(f)
+	if err != nil {
+		return bucket, err
+	}
+
+	f, err = os.Create(base + ".txt")
+	if err != nil {
+		return bucket, err
+	}
+	defer f.Close()
+
+	_, err = io.WriteString(f, l.Text)
+	if err != nil {
+		return bucket, err
+	}
+
+	return bucket, err
+}
+
+// Copies line images and text into directories based on their
+// confidence, as defined by the buckets struct, and returns
+// statistics of whire lines went in the process.
+func BucketUp(lines line.Details, buckets BucketSpecs, dirname string) (BucketStats, error) {
+	var all []string
+	var stats BucketStats
+
+	sort.Sort(lines)
+	sort.Sort(buckets)
+	for _, l := range lines {
+		bname, err := bucketLine(l, buckets, dirname)
+		if err != nil {
+			return stats, err
+		}
+		all = append(all, bname)
+	}
+
+	for _, b := range all {
+		i := sort.Search(len(stats), func(i int) bool { return stats[i].name == b })
+		if i == len(stats) {
+			newstat := BucketStat { b, 0 }
+			stats = append(stats, newstat)
+			i = len(stats) - 1
+		}
+		stats[i].num++
+	}
+
+	return stats, nil
+}
+
+// Prints statistics of where lines went when bucketing
+func PrintBucketStats(w io.Writer, stats BucketStats) {
+	var total int
+	for _, s := range stats {
+		total += s.num
+	}
+
+	fmt.Fprintf(w, "Copied %d lines\n", total)
+	fmt.Fprintf(w, "---------------------------------\n")
+	sort.Sort(stats)
+	for _, s := range stats {
+		fmt.Fprintf(w, "Lines in %7s: %2d%%\n", s.name, 100 * s.num / total)
+	}
+}
-- 
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