feat(analyzer): update AnalyzedCommit to add flexibility in parsing a message

This provides flexibility of parsing and rendering structured messages
with more detail in the changelog and helps extract metadata from the 
message. The new structure can be used to split a message in multiple 
blocks (e.g. footer)

internal/analyzer/analyzer.go

@@ -3,6 +3,8 @@ package analyzer
 
 import (
 	"fmt"
+	"regexp"
+	"strings"
 
 	"github.com/Nightapes/go-semantic-release/internal/shared"
 	"github.com/Nightapes/go-semantic-release/pkg/config"
@@ -11,8 +13,9 @@ import (
 
 // Analyzer struct
 type Analyzer struct {
-	analyzeCommits analyzeCommits
-	Config         config.ChangelogConfig
+	analyzeCommits  analyzeCommits
+	ChangelogConfig config.ChangelogConfig
+	AnalyzerConfig config.AnalyzerConfig
 }
 
 // Rule for commits
@@ -24,14 +27,15 @@ type Rule struct {
 }
 
 type analyzeCommits interface {
-	analyze(commit shared.Commit, tag Rule) (*shared.AnalyzedCommit, bool)
+	analyze(commit shared.Commit, tag Rule) *shared.AnalyzedCommit
 	getRules() []Rule
 }
 
 // New Analyzer struct for given commit format
-func New(format string, config config.ChangelogConfig) (*Analyzer, error) {
+func New(format string, analyzerConfig config.AnalyzerConfig, chglogConfig config.ChangelogConfig) (*Analyzer, error) {
 	analyzer := &Analyzer{
-		Config: config,
+		AnalyzerConfig: analyzerConfig,
+		ChangelogConfig: chglogConfig,
 	}
 
 	switch format {
@@ -39,7 +43,7 @@ func New(format string, config config.ChangelogConfig) (*Analyzer, error) {
 		analyzer.analyzeCommits = newAngular()
 		log.Debugf("Commit format set to %s", ANGULAR)
 	case CONVENTIONAL:
-		analyzer.analyzeCommits = newConventional()
+		analyzer.analyzeCommits = newConventional(analyzerConfig)
 		log.Debugf("Commit format set to %s", CONVENTIONAL)
 	default:
 		return nil, fmt.Errorf("invalid commit format: %s", format)
@@ -62,14 +66,14 @@ func (a *Analyzer) Analyze(commits []shared.Commit) map[shared.Release][]shared.
 
 	for _, commit := range commits {
 		for _, rule := range a.analyzeCommits.getRules() {
-			analyzedCommit, hasBreakingChange := a.analyzeCommits.analyze(commit, rule)
+			analyzedCommit := a.analyzeCommits.analyze(commit, rule)
 			if analyzedCommit == nil {
 				continue
 			}
-			if a.Config.PrintAll || rule.Changelog {
+			if a.ChangelogConfig.PrintAll || rule.Changelog {
 				analyzedCommit.Print = true
 			}
-			if hasBreakingChange {
+			if analyzedCommit.IsBreaking {
 				analyzedCommits["major"] = append(analyzedCommits["major"], *analyzedCommit)
 				break
 			}
@@ -80,3 +84,52 @@ func (a *Analyzer) Analyze(commits []shared.Commit) map[shared.Release][]shared.
 	log.Debugf("Analyzed commits: major=%d minor=%d patch=%d none=%d", len(analyzedCommits["major"]), len(analyzedCommits["minor"]), len(analyzedCommits["patch"]), len(analyzedCommits["none"]))
 	return analyzedCommits
 }
+
+func getMessageParts(msg string) (header string, bodyBlocks []string){
+	firstSplit := strings.SplitN(msg, "\n", 2)
+	header = firstSplit[0]
+	bodyBlocks = make([]string, 0)
+
+	if len(firstSplit) < 2 {
+		return
+	}
+	// Trim and then split by a blank line
+	remaining := strings.Trim(firstSplit[1], "\n")
+	bodyBlocks = strings.Split(remaining, "\n\n")
+
+	return
+}
+
+func parseMessageBlock(msg string, prefixes []string) shared.MessageBlock {
+	for _, prefix := range prefixes {
+		if !strings.HasPrefix(msg, prefix + ":") {
+			continue
+		}
+		content := strings.Replace(msg, prefix+":", "", 1)
+		return shared.MessageBlock{
+			Label:   prefix,
+			Content: strings.TrimSpace(content),
+		}
+	}
+	return shared.MessageBlock{
+		Label:   "",
+		Content: msg,
+	}
+}
+
+//
+// getRegexMatchedMap will match a regex with named groups and map the matching
+//  results to corresponding group names
+//
+func getRegexMatchedMap(regEx, url string) (paramsMap map[string]string) {
+	var compRegEx = regexp.MustCompile(regEx)
+	match := compRegEx.FindStringSubmatch(url)
+
+	paramsMap = make(map[string]string)
+	for i, name := range compRegEx.SubexpNames() {
+		if i > 0 && i <= len(match) {
+			paramsMap[name] = match[i]
+		}
+	}
+	return paramsMap
+}