From 072f0c594526d96dac1c181d057eb9cf5d16862d Mon Sep 17 00:00:00 2001
From: Sam Anthony <sam@samanthony.xyz>
Date: Thu, 24 Apr 2025 18:37:11 -0400
Subject: eprintf

---
 Makefile  |  4 ++--
 eprintf.c | 27 +++++++++++++++++++++++++++
 eprintf.h |  2 ++
 3 files changed, 31 insertions(+), 2 deletions(-)
 create mode 100644 eprintf.c
 create mode 100644 eprintf.h

diff --git a/Makefile b/Makefile
index 5fe4011..d9eb3a9 100644
--- a/Makefile
+++ b/Makefile
@@ -1,9 +1,9 @@
 CFLAGS = -std=c99 -Wall -Wextra -pedantic -Wno-deprecated-declarations -D_XOPEN_SOURCE=700L
 LDFLAGS = -lSDL2 -lSDL2_ttf -lm
 
-SRC = main.c microui.c renderer.c widget.c ui.c unit.c engine.c compressor.c
+SRC = main.c microui.c renderer.c widget.c ui.c unit.c engine.c compressor.c eprintf.c
 OBJ = ${SRC:.c=.o}
-HDR = microui.h renderer.h widget.h ui.h unit.h engine.h
+HDR = microui.h renderer.h widget.h ui.h unit.h engine.h eprintf.h util.h
 
 TEST_SRC = test.c test_angular_speed.c test_fraction.c test_pressure.c test_temperature.c test_volume.c test_volume_flow_rate.c test_mass_flow_rate.c test_engine.c unit.c engine.c
 TEST_OBJ = ${TEST_SRC:.c=.o}
diff --git a/eprintf.c b/eprintf.c
new file mode 100644
index 0000000..386293b
--- /dev/null
+++ b/eprintf.c
@@ -0,0 +1,27 @@
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "eprintf.h"
+
+void
+eprintf(const char *fmt, ...) {
+	va_list args;
+
+	va_start(args, fmt);
+	fprintf(stderr, "error: ");
+	vfprintf(stderr, fmt, args);
+	fprintf(stderr, "\n");
+	va_end(args);
+	exit(1);
+}
+
+void weprintf(const char *fmt, ...) {
+	va_list args;
+
+	va_start(args, fmt);
+	fprintf(stderr, "warning: ");
+	vfprintf(stderr, fmt, args);
+	fprintf(stderr, "\n");
+	va_end(args);
+}
diff --git a/eprintf.h b/eprintf.h
new file mode 100644
index 0000000..224b852
--- /dev/null
+++ b/eprintf.h
@@ -0,0 +1,2 @@
+void eprintf(const char *fmt, ...);
+void weprintf(const char *fmt, ...);
-- 
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