New function ds_get_line().

[sliver-openvswitch.git] / lib / dynamic-string.c

diff --git a/lib/dynamic-string.c b/lib/dynamic-string.c
index 2c2effb..03efac0 100644 (file)
--- a/lib/dynamic-string.c
+++ b/lib/dynamic-string.c
@@ -178,6 +178,22 @@ ds_put_strftime(struct ds *ds, const char *template, const struct tm *tm)
     }
 }
 
+int
+ds_get_line(struct ds *ds, FILE *file)
+{
+    ds_clear(ds);
+    for (;;) {
+        int c = getc(file);
+        if (c == EOF) {
+            return ds->length ? 0 : EOF;
+        } else if (c == '\n') {
+            return 0;
+        } else {
+            ds_put_char(ds, c);
+        }
+    }
+}
+
 char *
 ds_cstr(struct ds *ds)
 {