func Read()

in internal/chunkedfile/chunkedfile.go [58:110]

• 45 lines of code
• 10 McCabe index (conditional complexity)

func Read(filename string, report Reporter) (chunks []Chunk) {
	data, err := ioutil.ReadFile(filename)
	if err != nil {
		report.Errorf("%s", err)
		return
	}
	linenum := 1

	eol := "\n"
	if runtime.GOOS == "windows" {
		eol = "\r\n"
	}

	for i, chunk := range strings.Split(string(data), eol+"---"+eol) {
		if debug {
			fmt.Printf("chunk %d at line %d: %s\n", i, linenum, chunk)
		}
		// Pad with newlines so the line numbers match the original file.
		src := strings.Repeat("\n", linenum-1) + chunk

		wantErrs := make(map[int]*regexp.Regexp)

		// Parse comments of the form:
		// ### "expected error".
		lines := strings.Split(chunk, "\n")
		for j := 0; j < len(lines); j, linenum = j+1, linenum+1 {
			line := lines[j]
			hashes := strings.Index(line, "###")
			if hashes < 0 {
				continue
			}
			rest := strings.TrimSpace(line[hashes+len("###"):])
			pattern, err := strconv.Unquote(rest)
			if err != nil {
				report.Errorf("\n%s:%d: not a quoted regexp: %s", filename, linenum, rest)
				continue
			}
			rx, err := regexp.Compile(pattern)
			if err != nil {
				report.Errorf("\n%s:%d: %v", filename, linenum, err)
				continue
			}
			wantErrs[linenum] = rx
			if debug {
				fmt.Printf("\t%d\t%s\n", linenum, rx)
			}
		}
		linenum++

		chunks = append(chunks, Chunk{src, filename, report, wantErrs})
	}
	return chunks
}