Introduce pcre2_bitch_and_die()

1 files changed, 24 insertions, 0 deletions

diff --git a/src/util.c b/src/util.c
new file mode 100644
index 0000000..d20611f
--- /dev/null
+++ b/src/util.c
@@ -0,0 +1,24 @@
+#include <stddef.h>
+#include <stdlib.h>
+
+#include <errors.h>
+#include <pcre2.h>
+
+#include "exitcodes.h"
+
+void
+pcre2_bitch_and_die(int ec, const char *fmt)
+{
+	/* If we’ve gotten here, we don’t care about writing efficient code */
+	ptrdiff_t bufsz = 512;
+	for (;;) {
+		char *buf = malloc(bufsz);
+		if (buf == nullptr)
+			cerr(EXIT_FATAL, "malloc:");
+		if (pcre2_get_error_message(ec, buf, bufsz) == PCRE2_ERROR_NOMEMORY) {
+			free(buf);
+			bufsz *= 2;
+		} else
+			cerr(EXIT_FATAL, fmt, buf);
+	}
+}
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