fix mime type checking, write our own file extension fetcher

Signed-off-by: kim (grufwub) <grufwub@gmail.com>

core/temp.go

@@ -6,4 +6,4 @@ import "syscall"
 
 // Temporary check on Linux to ensure
 // correct Go version being used
-var _ = syscall.AllThreadsSyscall
+var _ = syscall.AllThreadsSyscall

core/util.go

@@ -21,7 +21,7 @@ func SplitBy(input, delim string) (string, string) {
 	return input[:index], input[index+len(delim):]
 }
 
-// SplitBy takes an input string and a delimiter, returning resulting two string from split with the delim at beginning of 2nd
+// SplitByBefore takes an input string and a delimiter, returning resulting two string from split with the delim at beginning of 2nd
 func SplitByBefore(input, delim string) (string, string) {
 	index := strings.Index(input, delim)
 	if index == -1 {
@@ -38,3 +38,17 @@ func SplitByLast(input, delim string) (string, string) {
 	}
 	return input[:index], input[index+len(delim):]
 }
+
+// FileExt returns the file extension of a file with a supplied path, doesn't include '.'
+func FileExt(path string) string {
+	i := len(path) - 1
+	for ; i >= 0; i-- {
+		switch path[i] {
+		case '/':
+			return ""
+		case '.':
+			return path[i+1:]
+		}
+	}
+	return ""
+}

gemini/gemini.go

@@ -2,7 +2,6 @@ package gemini
 
 import (
 	"gophi/core"
-	"path"
 )
 
 const gemMimeType = "text/gemini"
@@ -14,7 +13,7 @@ func getFileStatusMeta(p *core.Path) string {
 	}
 
 	// Get file extension
-	ext := path.Ext(p.Relative())
+	ext := core.FileExt(p.Relative())
 
 	// Try get the mime type, or use default unknown (application octet-stream)
 	mimeType, ok := mimeTypes[ext]