From 9594f39caae7c70bcc0be53d8b9ab570b891fb73 Mon Sep 17 00:00:00 2001
From: maulik13 <maulik.kataria@gmail.com>
Date: Mon, 8 Feb 2021 11:15:27 +0100
Subject: [PATCH 1/3] feat(changelog): allow using of TemplatePath file for
 full changelog text

---
 internal/changelog/changelog.go | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/internal/changelog/changelog.go b/internal/changelog/changelog.go
index 5158466..d0dba1d 100644
--- a/internal/changelog/changelog.go
+++ b/internal/changelog/changelog.go
@@ -31,9 +31,11 @@ introduced by commit:
 {{ end -}}
 {{ end -}}
 {{ end -}}`
+const defaultCommitListSubTemplate string = `{{ define "commitList" }}` + defaultCommitList + "{{ end }}"
 const defaultChangelogTitle string = `v{{.Version}} ({{.Now.Format "2006-01-02"}})`
 const defaultChangelog string = `# v{{$.Version}} ({{.Now.Format "2006-01-02"}})
-{{ .Commits -}}
+{{ template "commitList" .CommitsContent -}}
+
 {{ if .HasDocker}}
 ## Docker image
 
@@ -51,7 +53,8 @@ or
 `
 
 type changelogContent struct {
-	Commits          string
+	Commits			 string
+	CommitsContent   commitsContent
 	Version          string
 	Now              time.Time
 	Backtick         string
@@ -130,6 +133,7 @@ func (c *Changelog) GenerateChanglog(templateConfig shared.ChangelogTemplateConf
 	}
 
 	changelogContent := changelogContent{
+		CommitsContent: commitsContent,
 		Version:          templateConfig.Version,
 		Now:              c.releaseTime,
 		Backtick:         "`",
@@ -137,7 +141,7 @@ func (c *Changelog) GenerateChanglog(templateConfig shared.ChangelogTemplateConf
 		HasDockerLatest:  c.config.Changelog.Docker.Latest,
 		DockerRepository: c.config.Changelog.Docker.Repository,
 	}
-	template := defaultChangelog
+	template := defaultCommitListSubTemplate + defaultChangelog
 	if c.config.Changelog.TemplatePath != "" {
 		content, err := ioutil.ReadFile(c.config.Changelog.TemplatePath)
 		if err != nil {
@@ -164,8 +168,8 @@ func (c *Changelog) GenerateChanglog(templateConfig shared.ChangelogTemplateConf
 	}
 
 	log.Tracef("Commits %s", renderedCommitList)
-
 	changelogContent.Commits = renderedCommitList
+
 	log.Debugf("Render changelog")
 	renderedContent, err := generateTemplate(template, changelogContent)
 

From 3a37a5e1db1efa200649283ac859ea806a3bc4d1 Mon Sep 17 00:00:00 2001
From: maulik13 <maulik.kataria@gmail.com>
Date: Mon, 8 Feb 2021 11:30:06 +0100
Subject: [PATCH 2/3] feat(changelog): add string functions for changelog
 template

---
 internal/changelog/changelog.go | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/internal/changelog/changelog.go b/internal/changelog/changelog.go
index d0dba1d..a2698f0 100644
--- a/internal/changelog/changelog.go
+++ b/internal/changelog/changelog.go
@@ -1,6 +1,7 @@
 package changelog
 
 import (
+	"bufio"
 	"bytes"
 	"io/ioutil"
 	"strings"
@@ -180,6 +181,10 @@ func generateTemplate(text string, values interface{}) (string, error) {
 
 	funcMap := template.FuncMap{
 		"replace": replace,
+		"lower": lower,
+		"upper": upper,
+		"capitalize": capitalize,
+		"addPrefixToLines": addPrefixToLines,
 	}
 
 	var tpl bytes.Buffer
@@ -197,3 +202,30 @@ func generateTemplate(text string, values interface{}) (string, error) {
 func replace(input, from, to string) string {
 	return strings.Replace(input, from, to, -1)
 }
+
+func lower(input string) string {
+	return strings.ToLower(input)
+}
+
+func upper(input string) string {
+	return strings.ToUpper(input)
+}
+
+func capitalize(input string) string {
+	if len(input) > 0 {
+		return strings.ToUpper(string(input[0])) + input[1:]
+	}
+	return ""
+}
+
+// Adds a prefix to each line of the given text block
+// this can be helpful in rendering correct indentation or bullets for multi-line texts
+func addPrefixToLines(input, prefix string) string {
+	output := ""
+	scanner := bufio.NewScanner(strings.NewReader(input))
+	for scanner.Scan() {
+		output += prefix + scanner.Text() + "\n"
+	}
+	output = strings.TrimRight(output, "\n")
+	return output
+}

From c485c3ee85ab790fd097af58da2bc73531ab651a Mon Sep 17 00:00:00 2001
From: maulik13 <maulik.kataria@gmail.com>
Date: Fri, 12 Feb 2021 13:55:08 +0100
Subject: [PATCH 3/3] docs(changelog): update changelog template example

---
 examples/changelog.tmpl | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/examples/changelog.tmpl b/examples/changelog.tmpl
index f8f4486..4f4216d 100644
--- a/examples/changelog.tmpl
+++ b/examples/changelog.tmpl
@@ -1,5 +1,26 @@
+{{ define "commitList" }}
+{{ range $index,$commit := .BreakingChanges -}}
+{{ if eq $index 0 -}}
+## BREAKING CHANGES
+{{ end -}}
+* {{ if $commit.Scope }}**{{$.Backtick}}{{$commit.Scope}}{{$.Backtick}}**{{ end }} {{$commit.ParsedBreakingChangeMessage}}
+introduced by commit:
+{{$commit.ParsedMessage}} {{if $.HasURL}} ([{{ printf "%.7s" $commit.Commit.Hash}}]({{ replace $.URL "{{hash}}" $commit.Commit.Hash}})){{end}}
+{{ end -}}
+{{ range $key := .Order  -}}
+{{ $commits := index $.Commits $key -}}
+{{ if $commits -}}
+### {{ $key }}
+{{ range $index,$commit := $commits -}}
+* {{ if $commit.Scope }}**{{$.Backtick}}{{$commit.Scope}}{{$.Backtick}}** {{end}}{{$commit.ParsedMessage}}{{if $.HasURL}} ([{{ printf "%.7s" $commit.Commit.Hash}}]({{ replace $.URL "{{hash}}" $commit.Commit.Hash}})){{end}}
+{{ end -}}
+{{ end -}}
+{{ end -}}
+{{ end -}}
+
 # My custom release template v{{$.Version}} ({{.Now.Format "2006-01-02"}})
-{{ .Commits -}}
+{{ template "commitList" .CommitsContent -}}
+
 {{ if .HasDocker}}
 ## Docker image