Initial commit

src/snake_case.nim

@@ -0,0 +1,35 @@
+## Convert strings to/from SNAKE_CASE
+
+proc toSnakeCase(str: string): string =
+  ## Convert a camelCase string to SNAKE_CASE
+  if str.len > 0:
+    var prv: char = '\0'
+    for ch in str:
+      if ch in {'A'..'Z'}:
+        if result.len > 0 and prv notin {'A'..'Z'}:
+          result.add '_'
+        result.add ch
+      elif ch in {'a'..'z'}:
+        result.add (ch.byte - 32).char
+      elif ch in {'0'..'9'}:
+        result.add ch
+      elif ch in {'-', '_', '.', '+'}:
+        if result.len > 0 and result[^1] != '_':
+          result.add '_'
+
+proc fromSnakeCase(str: string): string =
+  ## Convert from SNAKE_CASE to camelCase
+  var usc: bool = false
+  for ch in str:
+    if ch in {'A'..'Z'}:
+      if usc:
+        result.add ch
+        usc = false
+      else:
+        result.add (ch.byte + 32).char
+    elif ch in {'0'..'9', 'a'..'z'}:
+      result.add ch
+    elif ch in {'_', '-', '.', '+'}:
+      usc = true
+
+# Fin.