support showyourwork template override directories on git directives

fixes #5

5 files changed, 33 insertions, 3 deletions

diff --git a/example.conf b/example.conf
index 18f58f7..0a8f3e0 100644
--- a/example.conf
+++ b/example.conf
@@ -108,5 +108,7 @@ gemini 0.0.0.0:1965 {
 	# "static", "cgi", and "git" directives support an "auth <name>" clause which requires that an authentication to pass.
 	cgi ~/public_gemini/cgi-bin/private at /~/cgi-bin/private auth private_gemini
 
-	git ~/code at /~/code
+	# The "templates" modifier can be used on "git" directives and provide a directory with template files in it.
+	# These can be used to customize the presentation of git repositories.
+	git ~/code at /~/code with templates /var/syw_templates
 }
diff --git a/gemini.go b/gemini.go
index 87af01f..975b62b 100644
--- a/gemini.go
+++ b/gemini.go
@@ -152,7 +152,7 @@ func addGeminiStaticRoute(router *sr.Router, route RouteDirective) {
 func addGeminiGitRoute(router *sr.Router, route RouteDirective) {
 	buildAndAddRoute(router, route, func(route RouteDirective) sr.Handler {
 		handler := sr.HandlerFunc(func(ctx context.Context, request *sr.Request) *sr.Response {
-			subrouter := syw.GeminiRouter(route.FsPath, nil)
+			subrouter := syw.GeminiRouter(route.FsPath, route.Modifiers.Templates)
 
 			reqclone := cloneRequest(request)
 			reqclone.Path = strings.TrimPrefix(reqclone.Path, route.URLPath)
diff --git a/gopher.go b/gopher.go
index d5cf3c0..dcd2085 100644
--- a/gopher.go
+++ b/gopher.go
@@ -109,7 +109,7 @@ func addGopherCGIRoute(router *sr.Router, route RouteDirective) {
 func addGopherGitRoute(router *sr.Router, route RouteDirective) {
 	buildAndAddRoute(router, route, func(route RouteDirective) sr.Handler {
 		return sr.HandlerFunc(func(ctx context.Context, request *sr.Request) *sr.Response {
-			subrouter := syw.GopherRouter(route.FsPath, nil)
+			subrouter := syw.GopherRouter(route.FsPath, route.Modifiers.Templates)
 
 			reqclone := cloneRequest(request)
 			reqclone.Path = strings.TrimPrefix(reqclone.Path, route.URLPath)
diff --git a/parse.go b/parse.go
index d087e95..15c5877 100644
--- a/parse.go
+++ b/parse.go
@@ -8,8 +8,10 @@ import (
 	"io"
 	"net"
 	"os/user"
+	"path/filepath"
 	"strconv"
 	"strings"
+	"text/template"
 
 	"github.com/go-kit/log/level"
 	"tildegit.org/tjp/sliderule/gemini"
@@ -448,12 +450,36 @@ func parseModifiers(text string) (Modifiers, string, error) {
 				mod.titanName = text[0:idx]
 				text = text[idx+1:]
 			}
+		case "templates":
+			if sep != " " {
+				return mod, "", errors.New("invalid 'templates' clause")
+			}
+			text = strings.TrimLeft(text, " \t")
+			idx = strings.IndexAny(text, " \t,")
+			var err error
+			if idx == 0 {
+				return mod, "", errors.New("invalid 'templates' clause")
+			} else if idx < 0 {
+				mod.Templates, err = loadTemplates(text)
+				text = ""
+			} else {
+				mod.Templates, err = loadTemplates(text[0:idx])
+				text = text[idx+1:]
+			}
+
+			if err != nil {
+				return mod, "", err
+			}
 		default:
 			return mod, text, nil
 		}
 	}
 }
 
+func loadTemplates(dirpath string) (*template.Template, error) {
+	return template.ParseGlob(filepath.Join(dirpath, "*"))
+}
+
 func parseAuth(text string) (string, string, error) {
 	spl := strings.SplitN(text, " ", 2)
 	switch len(spl) {
diff --git a/types.go b/types.go
index 3dd3935..9523d9c 100644
--- a/types.go
+++ b/types.go
@@ -5,6 +5,7 @@ import (
 	"crypto/tls"
 	"net"
 	"os/user"
+	"text/template"
 
 	"github.com/go-kit/log/level"
 	"tildegit.org/tjp/sliderule"
@@ -18,6 +19,7 @@ type Modifiers struct {
 	ExtendedGophermap bool
 	AutoAtom          bool
 	Titan             *Auth
+	Templates         *template.Template
 
 	titanName string
 }