From f635033e3e953e74d67b76a520c9760786330af5 Mon Sep 17 00:00:00 2001
From: Niall Sheridan <nsheridan@gmail.com>
Date: Tue, 24 Jan 2017 23:43:28 +0000
Subject: Switch to scl, an extension of hcl

---
 vendor/github.com/homemade/scl/scanner.go | 121 ++++++++++++++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 vendor/github.com/homemade/scl/scanner.go

(limited to 'vendor/github.com/homemade/scl/scanner.go')

diff --git a/vendor/github.com/homemade/scl/scanner.go b/vendor/github.com/homemade/scl/scanner.go
new file mode 100644
index 0000000..7dddf59
--- /dev/null
+++ b/vendor/github.com/homemade/scl/scanner.go
@@ -0,0 +1,121 @@
+package scl
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"strings"
+)
+
+type scannerTree []*scannerLine
+
+type scanner struct {
+	file   string
+	reader io.Reader
+	lines  scannerTree
+}
+
+func newScanner(reader io.Reader, filename ...string) *scanner {
+
+	file := "<no file>"
+
+	if len(filename) > 0 {
+		file = filename[0]
+	}
+
+	s := scanner{
+		file:   file,
+		reader: reader,
+		lines:  make(scannerTree, 0),
+	}
+
+	return &s
+}
+
+func (s *scanner) scan() (lines scannerTree, err error) {
+
+	// Split to lines
+	scanner := bufio.NewScanner(s.reader)
+	scanner.Split(bufio.ScanLines)
+
+	lineNumber := 0
+	rawLines := make(scannerTree, 0)
+
+	heredoc := ""
+	heredocContent := ""
+	heredocLine := 0
+
+	for scanner.Scan() {
+		lineNumber++
+
+		if heredoc != "" {
+			heredocContent += "\n" + scanner.Text()
+
+			if strings.TrimSpace(scanner.Text()) == heredoc {
+				// HCL requires heredocs to be terminated with a newline
+				rawLines = append(rawLines, newLine(s.file, lineNumber, 0, heredocContent+"\n"))
+				heredoc = ""
+				heredocContent = ""
+			}
+
+			continue
+		}
+
+		text := strings.TrimRight(scanner.Text(), " \t{}")
+
+		if text == "" {
+			continue
+		}
+
+		if matches := heredocMatcher.FindAllStringSubmatch(text, -1); matches != nil {
+			heredoc = matches[0][1]
+			heredocContent = text
+			heredocLine = lineNumber
+			continue
+		}
+
+		rawLines = append(rawLines, newLine(s.file, lineNumber, 0, text))
+	}
+
+	if heredoc != "" {
+		return lines, fmt.Errorf("Heredoc '%s' (started line %d) not terminated", heredoc, heredocLine)
+	}
+
+	// Make sure the first line has no indent
+	if len(rawLines) > 0 {
+		index := 0
+		s.indentLines(&index, rawLines, &lines, rawLines[0].content.indent())
+	}
+
+	return
+}
+
+func (s *scanner) indentLines(index *int, input scannerTree, output *scannerTree, indent int) {
+
+	// Ends when there are no more lines
+	if *index >= len(input) {
+		return
+	}
+
+	var lineToAdd *scannerLine
+
+	for ; *index < len(input); *index++ {
+
+		lineIndent := input[*index].content.indent()
+
+		if lineIndent == indent {
+			lineToAdd = input[*index].branch()
+			*output = append(*output, lineToAdd)
+
+		} else if lineIndent > indent {
+			s.indentLines(index, input, &lineToAdd.children, lineIndent)
+
+		} else if lineIndent < indent {
+			*index--
+			return
+		}
+
+	}
+
+	return
+}
-- 
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