Convert <entity-name> to upper camel case.

Previous, we only capitalized the names which worked great unless they contained underscores. Was became `ListZipcode_imports` now becomes `ListZipcodeImports` which improves function and type names generates by sqlc.

Author: ngrash

README.md

@@ -5,7 +5,7 @@
 ## Installation
 
 ```
-$ go install github.com/ngrash/sqlcup/cmd/sqlcup@v0.4.1
+$ go install github.com/ngrash/sqlcup/cmd/sqlcup@v0.4.2
 ```
 
 ## Usage
@@ -19,8 +19,8 @@ Synopsis:
 
 Description:
   sqlcup prints SQL statements to stdout. The <entity-name> argument must be
-  of the form <singular-name>/<plural-name>. sqlcup capitalizes those names
-  where necessary.
+  of the form <singular-name>/<plural-name>. sqlcup converts those names to
+  upper camel case where necessary.
 
   Each column argument given to sqlcup defines a database column and must
   be either a <plain-column> or a <smart-column>:

cmd/sqlcup/main.go

@@ -259,8 +259,8 @@ func parseScaffoldCommandArgs(args []string) (*scaffoldCommandArgs, error) {
 
 	sca := &scaffoldCommandArgs{
 		Table:             tableParts[1],
-		SingularEntity:    capitalize(tableParts[0]),
-		PluralEntity:      capitalize(tableParts[1]),
+		SingularEntity:    upperCamelCase(tableParts[0]),
+		PluralEntity:      upperCamelCase(tableParts[1]),
 		NoExistsClause:    *noExistsClauseFlag,
 		NoReturningClause: *noReturningClauseFlag,
 		OrderBy:           *orderByFlag,
@@ -446,6 +446,19 @@ func writeUpdateQuery(w io.Writer, args *scaffoldCommandArgs) {
 	}
 }
 
+// upperCamelCase converts a string like "zipcode_imports" to "ZipcodeImports".
+func upperCamelCase(s string) string {
+	parts := strings.Split(s, "_")
+	if len(parts) == 1 {
+		return capitalize(s)
+	}
+	b := strings.Builder{}
+	for _, p := range parts {
+		b.WriteString(capitalize(p))
+	}
+	return b.String()
+}
+
 func capitalize(s string) string {
 	r := []rune(s)
 	r[0] = unicode.ToUpper(r[0])

cmd/sqlcup/usage.txt

@@ -5,8 +5,8 @@ Synopsis:
 
 Description:
   sqlcup prints SQL statements to stdout. The <entity-name> argument must be
-  of the form <singular-name>/<plural-name>. sqlcup capitalizes those names
-  where necessary.
+  of the form <singular-name>/<plural-name>. sqlcup converts those names to
+  upper camel case where necessary.
 
   Each column argument given to sqlcup defines a database column and must
   be either a <plain-column> or a <smart-column>: