linenoise: support forcing of noninteractive mode.

* linenoise/linenoise.c (struct lino_state): New member,
noninteractive.
(lino_set_noninteractive, lino_get_noninteractive): New
functions.
(linenoise): Check noninteractive flag; if set, treat the
situation like !isatty(ls->ifd).

* linenoise/linenoise.h (lino_set_noninteractive,
lino_get_noninteractive): Delared.

2 files changed, 14 insertions, 1 deletions

diff --git a/linenoise/linenoise.c b/linenoise/linenoise.c
index 90fd1529..1209816a 100644
--- a/linenoise/linenoise.c
+++ b/linenoise/linenoise.c
@@ -124,6 +124,7 @@ struct lino_state {
     int need_refresh;   /* Need refresh. */
     int selmode;        /* Visual selection being made. */
     int selinclusive;   /* Selections include character right of endpoint. */
+    int noninteractive; /* No character editing, even if input is tty. */
     struct lino_undo *undo_stack;
     lino_error_t error; /* Most recent error. */
 };
@@ -174,6 +175,16 @@ int lino_get_selinculsive(lino_t *ls)
     return ls->selinclusive;
 }
 
+void lino_set_noninteractive(lino_t *ls, int ni)
+{
+    ls->noninteractive = ni;
+}
+
+int lino_get_noninteractive(lino_t *ls)
+{
+    return ls->noninteractive;
+}
+
 void lino_set_atom_cb(lino_t *l, lino_atom_cb_t *cb, void *ctx)
 {
     l->atom_callback = cb;
@@ -2186,7 +2197,7 @@ char *linenoise(lino_t *ls, const char *prompt)
 {
     int count;
 
-    if (ls->ifs || !isatty(ls->ifd)) {
+    if (ls->ifs || ls->noninteractive || !isatty(ls->ifd)) {
         if (!ls->ifs) {
             int fd = dup(ls->ifd);
             FILE *fi = (fd > 0) ? fdopen(fd, "r") : 0;
diff --git a/linenoise/linenoise.h b/linenoise/linenoise.h
index 454523a9..28b304a4 100644
--- a/linenoise/linenoise.h
+++ b/linenoise/linenoise.h
@@ -75,6 +75,8 @@ void lino_set_multiline(lino_t *, int ml);
 int lino_get_multiline(lino_t *);
 void lino_set_selinclusive(lino_t *, int si);
 int lino_get_selinculsive(lino_t *);
+void lino_set_noninteractive(lino_t *, int ni);
+int lino_get_noninteractive(lino_t *);
 
 typedef char *lino_atom_cb_t(lino_t *, const char *line, int n, void *ctx);
 void lino_set_atom_cb(lino_t *, lino_atom_cb_t *, void *ctx);