1 files changed, 130 insertions, 0 deletions
diff --git a/lib/dpkg/error.c b/lib/dpkg/error.c
new file mode 100644
index 0000000..025c558
--- /dev/null
+++ b/lib/dpkg/error.c
@@ -0,0 +1,130 @@
+/*
+ * libdpkg - Debian packaging suite library routines
+ * error.c - error message reporting
+ *
+ * Copyright © 2011-2015 Guillem Jover <guillem@debian.org>
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <compat.h>
+
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include <dpkg/dpkg.h>
+#include <dpkg/varbuf.h>
+#include <dpkg/error.h>
+
+static void DPKG_ATTR_VPRINTF(4)
+dpkg_error_set(struct dpkg_error *err, enum dpkg_msg_type type, int syserrno,
+               const char *fmt, va_list args)
+{
+	struct varbuf str = VARBUF_INIT;
+
+	if (err == NULL)
+		return;
+
+	err->type = type;
+	err->syserrno = syserrno;
+
+	varbuf_vprintf(&str, fmt, args);
+	err->str = str.buf;
+}
+
+bool
+dpkg_has_error(struct dpkg_error *err)
+{
+	return err != NULL && err->type != DPKG_MSG_NONE;
+}
+
+int
+dpkg_put_warn(struct dpkg_error *err, const char *fmt, ...)
+{
+	va_list args;
+
+	va_start(args, fmt);
+	dpkg_error_set(err, DPKG_MSG_WARN, 0, fmt, args);
+	va_end(args);
+
+	return -1;
+}
+
+int
+dpkg_put_error(struct dpkg_error *err, const char *fmt, ...)
+{
+	va_list args;
+
+	va_start(args, fmt);
+	dpkg_error_set(err, DPKG_MSG_ERROR, 0, fmt, args);
+	va_end(args);
+
+	return -1;
+}
+
+int
+dpkg_put_errno(struct dpkg_error *err, const char *fmt, ...)
+{
+	va_list args;
+	char *new_fmt;
+	int syserrno = errno;
+
+	new_fmt = str_fmt("%s (%s)", fmt, strerror(errno));
+
+	va_start(args, fmt);
+	dpkg_error_set(err, DPKG_MSG_ERROR, syserrno, new_fmt, args);
+	va_end(args);
+
+	free(new_fmt);
+
+	return -1;
+}
+
+void
+dpkg_error_print(struct dpkg_error *err, const char *fmt, ...)
+{
+	va_list args;
+	char *str;
+
+	va_start(args, fmt);
+	m_vasprintf(&str, fmt, args);
+	va_end(args);
+
+	if (err->type == DPKG_MSG_WARN)
+		warning("%s: %s", str, err->str);
+	else
+		ohshit("%s: %s", str, err->str);
+
+	free(str);
+}
+
+void
+dpkg_error_move(struct dpkg_error *dst, struct dpkg_error *src)
+{
+	dst->type = src->type;
+	src->type = DPKG_MSG_NONE;
+	dst->str = src->str;
+	src->str = NULL;
+}
+
+void
+dpkg_error_destroy(struct dpkg_error *err)
+{
+	err->type = DPKG_MSG_NONE;
+	err->syserrno = 0;
+	free(err->str);
+	err->str = NULL;
+}