From baef6f49570c15c18c1bf19ecf5124df314ffdb5 Mon Sep 17 00:00:00 2001
From: Holger Vogt <holger.vogt@uni-due.de>
Date: Sun, 2 Aug 2026 15:46:17 +0200
Subject: [PATCH] make the path for fopen more flexible, add e.g. the contents
 of the 'sourcepath' variable.

---
 src/spicelib/devices/nport/nportread.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/spicelib/devices/nport/nportread.c b/src/spicelib/devices/nport/nportread.c
index 348a3b87c..7bc4b878b 100644
--- a/src/spicelib/devices/nport/nportread.c
+++ b/src/spicelib/devices/nport/nportread.c
@@ -32,6 +32,8 @@ keyword.  All numeric fields are plain doubles.
 #include <stdlib.h>
 #include <string.h>
 
+#include "ngspice/fteext.h"
+
 /* token reader: skips '#'-to-EOL comments; returns 1 on a token, 0 on EOF */
 static int
 nport_tok(FILE *f, char *buf, int cap)
@@ -79,7 +81,7 @@ snp_nport_read(const char *path,
                double **presRe, double **presIm,
                char *err, int errlen)
 {
-    FILE *f = fopen(path, "r");
+    FILE *f = inp_pathopen(path, "r");
     int N = 0, Np = -1, ver = 0, i, got_hdr = 0;
     double *poleRe = NULL, *poleIm = NULL, *d = NULL, *e = NULL;
     double *resRe = NULL, *resIm = NULL;