timekeeper

commit b655c44b20bfc273a2b54f451afaf0ca0697bab2
parent f1b82b09f6cce82298673864b2d712f595508748
Author: Jacob R. Edwards <jacob@jacobedwards.org>
Date:   Sun, 24 Mar 2024 13:55:04 -0700

Add tk_htmlerror function

This function writes an error message to the HTML document using
the error class.

Diffstat:
M
pages/common.c
 | 
22
++++++++++++++++++++++
M
pages/common.h
 | 
1
+

2 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/pages/common.c b/pages/common.c
@@ -1,4 +1,5 @@
 #include <ctype.h>
+#include <stdio.h>
 #include <string.h>
 
 #include "common.h"
@@ -83,3 +84,24 @@ tk_startpage(struct pagedata *pd, struct pagetemplate *t, enum khttp code)
 		return status;
 	return KCGI_OK;
 }
+
+enum kcgi_err
+tk_htmlerror(struct pagedata *pd, char *fmt, ...)
+{
+	enum kcgi_err status;
+	char ebuf[128];
+	va_list ap;
+
+	va_start(ap, fmt);
+	/* intentionally ignore truncated message */
+	if (vsnprintf(ebuf, sizeof(ebuf), fmt, ap) < 0)
+		return KCGI_SYSTEM;
+	va_end(ap);
+
+	if ((status = khtml_attr(&pd->html, KELEM_P,
+	    KATTR_CLASS, "error", KATTR__MAX)) != KCGI_OK ||
+	    (status = khtml_puts(&pd->html, "Error: ")) != KCGI_OK ||
+	    (status = khtml_puts(&pd->html, ebuf)) != KCGI_OK)
+		return status;
+	return khtml_closeelem(&pd->html, 1);
+}
diff --git a/pages/common.h b/pages/common.h
@@ -14,3 +14,4 @@
 enum kcgi_err	htmlheader(struct pagedata *pd);
 enum kcgi_err	tk_startpage(struct pagedata *pd, struct pagetemplate *t,
     enum khttp code);
+enum kcgi_err	tk_htmlerror(struct pagedata *pd, char *fmt, ...);