From 8f6d809f730f5ec4e24a67c0a3aa061fb98b35f2 Mon Sep 17 00:00:00 2001
From: Evan Fiordeliso <evan.fiordeliso@gmail.com>
Date: Thu, 16 Nov 2023 23:21:23 -0500
Subject: [PATCH] Remove dependency on strcase

---
 go.mod       |  2 --
 go.sum       |  2 --
 tpl_funcs.go | 42 +++++++++++++++++++++++++++++++++---------
 3 files changed, 33 insertions(+), 13 deletions(-)

diff --git a/go.mod b/go.mod
index 3aac729..f6fed3c 100644
--- a/go.mod
+++ b/go.mod
@@ -1,5 +1,3 @@
 module go.fifitido.net/cmd
 
 go 1.21.3
-
-require github.com/iancoleman/strcase v0.3.0
diff --git a/go.sum b/go.sum
index 6261b6a..e69de29 100644
--- a/go.sum
+++ b/go.sum
@@ -1,2 +0,0 @@
-github.com/iancoleman/strcase v0.3.0 h1:nTXanmYxhfFAMjZL34Ov6gkzEsSJZ5DbhxWjvSASxEI=
-github.com/iancoleman/strcase v0.3.0/go.mod h1:iwCmte+B7n89clKwxIoIXy/HfoL7AsD47ZCWhYzw7ho=
diff --git a/tpl_funcs.go b/tpl_funcs.go
index ab29b83..da545c5 100644
--- a/tpl_funcs.go
+++ b/tpl_funcs.go
@@ -2,10 +2,9 @@ package cmd
 
 import (
 	"fmt"
+	"regexp"
 	"strings"
 	"text/template"
-
-	"github.com/iancoleman/strcase"
 )
 
 var tplFuncs = template.FuncMap{
@@ -22,7 +21,6 @@ var tplFuncs = template.FuncMap{
 	"sub":       tplSub,
 	"dec":       tplDec,
 	"mult":      tplMult,
-	"pascal":    tplPascal,
 	"camel":     tplCamel,
 }
 
@@ -51,7 +49,19 @@ func tplJoin(strs []string, sep string) string {
 }
 
 func tplUnder(s string) string {
-	return strcase.ToSnake(s)
+	// Remove all characters that are not alphanumeric or spaces or underscores
+	s = regexp.MustCompile("[^a-zA-Z0-9_ -]+").ReplaceAllString(s, "")
+
+	// Replace all spaces with underscores
+	s = strings.ReplaceAll(s, " ", "_")
+
+	// Replace all dashes with underscores
+	s = strings.ReplaceAll(s, "-", "_")
+
+	// Convert to lowercase
+	s = strings.ToLower(s)
+
+	return s
 }
 
 func tplVarPrefix(s string) string {
@@ -90,10 +100,24 @@ func tplMult(a, b int) int {
 	return a * b
 }
 
-func tplPascal(s string) string {
-	return strcase.ToCamel(s)
-}
-
 func tplCamel(s string) string {
-	return strcase.ToLowerCamel(s)
+	// Remove all characters that are not alphanumeric or spaces or underscores
+	s = regexp.MustCompile("[^a-zA-Z0-9_ -]+").ReplaceAllString(s, "")
+
+	// Replace all underscores with spaces
+	s = strings.ReplaceAll(s, "_", " ")
+
+	// Replace all dashes with spaces
+	s = strings.ReplaceAll(s, "-", " ")
+
+	// Title case s
+	words := strings.Split(s, " ")
+	for i, word := range words {
+		words[i] = strings.ToTitle(word)
+	}
+
+	// Join words
+	s = strings.Join(words, "")
+
+	return s
 }