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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-10-28 20:58:08 +0100
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-10-28 20:58:55 +0100
commit534c573adf534c29fce8a23a46eb82f154885588 (patch)
treeb266cb17cd167c5c039313f6aa31f1f7310f9d39 /lib
parent887b67908d0e6a2b2f50e04319c1cf4412a25f89 (diff)
Add a minimal fallback implementation for getline()
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'lib')
-rw-r--r--lib/util/Makemodule.am2
-rw-r--r--lib/util/getline.c50
2 files changed, 51 insertions, 1 deletions
diff --git a/lib/util/Makemodule.am b/lib/util/Makemodule.am
index e624bbd..23e5c4e 100644
--- a/lib/util/Makemodule.am
+++ b/lib/util/Makemodule.am
@@ -1,7 +1,7 @@
libutil_la_SOURCES = include/util/util.h include/util/compat.h
libutil_la_SOURCES += lib/util/str_table.c include/util/str_table.h
libutil_la_SOURCES += lib/util/alloc.c lib/util/canonicalize_name.c
-libutil_la_SOURCES += lib/util/strndup.c
+libutil_la_SOURCES += lib/util/strndup.c lib/util/getline.c
libutil_la_CFLAGS = $(AM_CFLAGS)
libutil_la_CPPFLAGS = $(AM_CPPFLAGS)
libutil_la_LDFLAGS = $(AM_LDFLAGS)
diff --git a/lib/util/getline.c b/lib/util/getline.c
new file mode 100644
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