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-rw-r--r--lib/util/getline.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/lib/util/getline.c b/lib/util/getline.c
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index 0000000..996bef2
--- /dev/null
+++ b/lib/util/getline.c
@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/*
+ * getline.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "config.h"
+#include "util/compat.h"
+
+#include <string.h>
+#include <stdlib.h>
+
+#ifndef HAVE_GETLINE
+ssize_t getline(char **line, size_t *n, FILE *fp)
+{
+ size_t new_cap, len = 0, cap = 0;
+ char *buffer = NULL, *new;
+ int c;
+
+ if (feof(fp) || ferror(fp))
+ return -1;
+
+ do {
+ c = fgetc(fp);
+
+ if (ferror(fp))
+ return -1;
+
+ if (c == EOF)
+ c = '\n';
+
+ if (len == cap) {
+ new_cap = cap ? cap * 2 : 32;
+ new = realloc(buffer, new_cap);
+
+ if (new == NULL)
+ return -1;
+
+ buffer = new;
+ cap = new_cap;
+ }
+
+ buffer[len++] = c;
+ } while (c != '\n');
+
+ *line = buffer;
+ *n = len;
+ return len;
+}
+#endif