From 2ade60747db41771498ab2b85ce6e3c3389f2c26 Mon Sep 17 00:00:00 2001
From: Nicholas Noll <nbnoll@eml.cc>
Date: Wed, 13 Oct 2021 09:08:59 -0700
Subject: feat(rc): added unix port of rc with linenoise

---
 sys/cmd/rc/prompt.c | 101 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 sys/cmd/rc/prompt.c

(limited to 'sys/cmd/rc/prompt.c')

diff --git a/sys/cmd/rc/prompt.c b/sys/cmd/rc/prompt.c
new file mode 100644
index 0000000..b51e509
--- /dev/null
+++ b/sys/cmd/rc/prompt.c
@@ -0,0 +1,101 @@
+#include "rc.h"
+#include "fns.h"
+#include "io.h"
+#include "exec.h"
+#include "getflags.h"
+#include <assert.h>
+#include <errno.h>
+#include <stdio.h>
+#include <sys/stat.h>
+
+#include "linenoise.h"
+
+#define DEBUG(f, a...) \
+	if(0){}else{pfmt(err, "\n%s: "f,  __FUNCTION__, ## a);flush(err);}
+
+#define HISTORY_PATH "~/.local/rc/history"
+
+#define COMPLETE_FN 		"complete"
+#define COMPLETE_RESULTS 	"rc_complete_results"
+
+static
+char*
+completion_matches(const char *s, int i)
+{
+    word *w;
+
+    for(w=vlook(COMPLETE_RESULTS)->val; w; w=w->next, i--)
+        if(!i)
+            return strdup(w->word);
+    return nil;
+}
+
+static
+void
+completion(const char *text, linenoiseCompletions *lc)
+{
+    linenoiseAddCompletion(lc, "test");
+}
+
+static
+void
+savehist(void)
+{
+    linenoiseHistorySave(HISTORY_PATH);
+}
+
+static
+void
+readline(void)
+{
+    static int first = 1;
+    io *f = runq->cmdfd;
+    char *s;
+    long n;
+
+    if(first){
+        linenoiseSetMultiLine(1);
+        linenoiseSetCompletionCallback(completion);
+
+        linenoiseHistorySetMaxLen(10000);
+
+        /* history */
+        if(linenoiseHistoryLoad(HISTORY_PATH)!=0 && errno!=ENOENT)
+            pfmt(err, "rc: loadhistory: %s\n", strerror(errno));
+
+        atexit(savehist);
+        first = 0;
+    }
+
+    s = linenoise(promptstr);
+    if(!s)
+        return;
+
+    n = strlen(s);
+    assert(n < NBUF-1);
+    strcpy(f->buf, s);
+    f->buf[n++] = '\n';
+    f->bufp = f->buf;
+    f->ebuf = f->buf+n;
+
+    linenoiseHistoryAdd(s);
+    free(s);
+}
+
+void
+pprompt(void)
+{
+	var *prompt;
+
+	if(runq->iflag){
+		flush(err);
+		readline();
+		prompt = vlook("prompt");
+		if(prompt->val && prompt->val->next)
+			promptstr = prompt->val->next->word;
+		else
+			promptstr="\t";
+	}
+	runq->lineno++;
+	doprompt = 0;
+}
-- 
cgit v1.2.1