1 files changed, 75 insertions, 0 deletions
diff --git a/libasn1compiler/asn1c_out.c b/libasn1compiler/asn1c_out.c
new file mode 100644
index 00000000..a6432418
--- /dev/null
+++ b/libasn1compiler/asn1c_out.c
@@ -0,0 +1,75 @@
+#include "asn1c_internal.h"
+
+/*
+ * Add an elementary chunk of target language text
+ * into appropriate output stream.
+ */
+int
+asn1c_compiled_output(arg_t *arg, const char *fmt, ...) {
+	const char *p;
+	int lf_found;
+	va_list ap;
+	out_chunk_t *m;
+	char *buf;
+	int ret;
+
+	/*
+	 * Make sure the output has a single LF and only at the end.
+	 */
+	for(lf_found = 0, p = fmt; *p; p++) {
+		if(*p == '\n') {
+			lf_found++;
+			assert(p[1] == '\0');
+		}
+	}
+	assert(lf_found <= 1);
+
+	/*
+	 * Print out the indentation.
+	 */
+	if(arg->indented == 0) {
+		int i = arg->indent_level;
+		arg->indented = 1;
+		while(i--) {
+			ret = asn1c_compiled_output(arg, "\t");
+			if(ret == -1) return -1;
+		}
+	}
+
+	/*
+	 * Estimate necessary size.
+	 */
+	buf = "";
+	va_start(ap, fmt);
+	ret = vsnprintf(buf, 0, fmt, ap);
+	va_end(ap);
+	assert(ret >= 0);
+
+	/*
+	 * Allocate buffer.
+	 */
+	m = calloc(1, sizeof(out_chunk_t));
+	if(m == NULL) return -1;
+	m->len = ret + 1;
+	m->buf = malloc(ret + 1);
+	if(m->buf == NULL) {
+		free(m);
+		return -1;
+	}
+
+	/*
+	 * Fill the buffer.
+	 */
+	va_start(ap, fmt);
+	ret = vsnprintf(m->buf, m->len, fmt, ap);
+	assert(ret < m->len);
+	m->len = ret;
+	va_end(ap);
+
+	TQ_ADD(&(arg->target->targets[arg->target->target]), m, next);
+
+	if(lf_found)
+		arg->indented = 0;
+
+	return 0;
+}