initial commit

go.mod

@@ -0,0 +1,3 @@
+module git.cycore.io/kl/srt-indexer
+
+go 1.16

main.go

@@ -0,0 +1,64 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"log"
+	"os"
+)
+
+func main() {
+   if len(os.Args) != 2 {
+      log.Fatalln("one argument: file name")
+   }
+
+   f, err := os.Open(os.Args[1])
+   if err != nil {
+      log.Fatalf("failed to open file %s: %s", os.Args[1], err.Error())
+   }
+   defer f.Close()
+
+   var i int
+
+   o := os.Stdout
+   defer o.Close()
+
+   // File should always start with '1'
+   i++
+   if _, err = o.WriteString(fmt.Sprintf("%d\n", i)); err != nil {
+      log.Fatalln("failed to write index:", err)
+   }
+
+   r := bufio.NewReader(f)
+
+   var emptyLine bool
+   for {
+      emptyLine = false
+
+      l, err := r.ReadString('\n')
+      if err == io.EOF {
+         break
+      }
+      if err != nil {
+         log.Fatalln("failed to read line:", err)
+      }
+
+      if len(l) == 1 {
+         emptyLine = true
+      }
+
+      if _, err = o.WriteString(l); err != nil {
+         log.Fatalln("failed to write to output:", err)
+      }
+
+      if emptyLine {
+         i++
+         if _, err := o.WriteString(fmt.Sprintf("%d\n", i)); err != nil {
+            log.Fatalln("failed to write index:", err)
+         }
+      }
+   }
+
+
+}

test.txt

@@ -0,0 +1,7 @@
+This is a first line
+This is a first additional line.
+
+This is a second stanza.  There are more
+stanzae to be had.
+
+There are times in which authorities should be held accountable.