1 files changed, 52 insertions, 0 deletions
diff --git a/src/utils.c b/src/utils.c
new file mode 100644
index 0000000..7bab058
--- /dev/null
+++ b/src/utils.c
@@ -0,0 +1,52 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdbool.h>
+#include <errno.h>
+#include <stdlib.h>
+
+#include "options.h"
+#include "utils.h"
+
+FILE *genb_fopen(const char *fname, const char *mode)
+{
+    char *fpath;
+    int fpathl;
+    FILE *filef;
+
+    fpathl = strlen(options->outdirname) + strlen(fname) + 2;
+    fpath = malloc(fpathl);
+    snprintf(fpath, fpathl, "%s/%s", options->outdirname, fname);
+
+    filef = fopen(fpath, mode);
+    if (filef == NULL) {
+        fprintf(stderr, "Error: unable to open file %s (%s)\n",
+                fpath, strerror(errno));
+        free(fpath);
+        return NULL;
+    }
+    free(fpath);
+
+    return filef;
+}
+
+#ifdef NEED_STRNDUP
+
+char *strndup(const char *s, size_t n)
+{
+	size_t len;
+	char *s2;
+
+	for (len = 0; len != n && s[len]; len++)
+		continue;
+
+	s2 = malloc(len + 1);
+	if (!s2)
+		return 0;
+
+	memcpy(s2, s, len);
+	s2[len] = 0;
+	return s2;
+}
+
+#endif
+