commit 3e8b34ba260ecb0048222375132a6998b2a8d2cc
from: Omar Polo <op@omarpolo.com>
date: Sat Jan 07 09:23:36 2023 UTC

template: add `while' construct

commit - 52afe35820b3ceb4c85d7e72024e976a143cfd78
commit + 3e8b34ba260ecb0048222375132a6998b2a8d2cc
blob - 1bebb961c5e733837754ec787917a8b8d6bdc572
blob + d61bd1fae0e2bab34ea4d6fe34e3f2301879546a
--- template/parse.y
+++ template/parse.y
@@ -87,7 +87,7 @@ typedef struct {
 %}
 
 %token	DEFINE ELSE END ERROR FINALLY FOR IF INCLUDE PRINTF
-%token	RENDER TQFOREACH UNSAFE URLESCAPE
+%token	RENDER TQFOREACH UNSAFE URLESCAPE WHILE
 %token	<v.string>	STRING
 %type	<v.string>	string
 %type	<v.string>	stringy
@@ -273,6 +273,12 @@ loop		: '{' FOR stringy '}' {
 		} body end {
 			fputs("}\n", fp);
 		}
+		| '{' WHILE stringy '}' {
+			fprintf(fp, "while (%s) {\n", $3);
+			free($3);
+		} body end {
+			fputs("}\n", fp);
+		}
 		;
 
 end		: '{' END '}'
@@ -353,6 +359,7 @@ lookup(char *s)
 		{ "tailq-foreach",	TQFOREACH },
 		{ "unsafe",		UNSAFE },
 		{ "urlescape",		URLESCAPE },
+		{ "while",		WHILE },
 	};
 	const struct keywords	*p;
 
blob - 31b32697b9affdd4231edc3b70f8abaf0bb8300c
blob + 5b286fbc62df91dfd76bf8f751fd3591c532b925
--- template/template.7
+++ template/template.7
@@ -102,6 +102,8 @@ only zero or one time and always for last.
 Looping construct similar to the C loop.
 .It Cm {{ Ic tailq-foreach Ar var head fieldname Cm }} Ar .. Cm {{ Ic end Cm }}
 Looping construct similar to the queue.h macro TAILQ_FOREACH.
+.It Cm {{ Ic while Ar ... Cm  }} Ar ... Cm {{ Ic end Cm }}
+Looping construct similar to the C while loop.
 .It Cm {{ Ar expression Cm | Ic unsafe Cm }}
 Output
 .Ar expression