From 7099a86ca74fa637f26af38674f80fb8efd5f6fa Mon Sep 17 00:00:00 2001
From: Trumeet <yuuta@yuuta.moe>
Date: Tue, 26 Jul 2022 17:36:20 -0700
Subject: refactor(libacron/acronc/helloworld): move to separate directories

The corresponding CMakeLists.txt files are still rough.
---
 client/acronc/handler_stdin.c | 85 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 client/acronc/handler_stdin.c

(limited to 'client/acronc/handler_stdin.c')

diff --git a/client/acronc/handler_stdin.c b/client/acronc/handler_stdin.c
new file mode 100644
index 0000000..3ac307d
--- /dev/null
+++ b/client/acronc/handler_stdin.c
@@ -0,0 +1,85 @@
+/*
+ * Created by yuuta on 7/24/22.
+ */
+
+#include "handler.h"
+#include "log.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+static unsigned int id = 0;
+
+static uv_tty_t tty;
+
+static int (*cb_recv)(ac_request_t *req);
+
+static void (*cb_close)(void);
+
+static void on_close(uv_handle_t *handle) {
+    cb_close();
+}
+
+static void on_alloc(uv_handle_t *handle, size_t size, uv_buf_t *buf) {
+    LOGDV("on_alloc(handle = %p): size = %lu",
+          handle,
+          size);
+    void *b = malloc(size);
+    if (!b) {
+        LOGEV("Cannot allocate memory of %u bytes: %s.",
+              size,
+              strerror(errno));
+        /* Stream is still working now. */
+        uv_close(handle, on_close);
+        *buf = uv_buf_init(NULL, 0); /* Just in case? */
+        return;
+    }
+    *buf = uv_buf_init(b, size);
+}
+
+static void on_stdin(uv_stream_t *t, ssize_t nread, const uv_buf_t *buf) {
+    LOGDV("on_stdin(stream = %p): nread = %ld, buf = %p, buf->base = %p, buf->len = %lu",
+          t,
+          nread,
+          buf, buf->base, buf->len);
+    if (!nread) {
+        if (buf->base) free(buf->base);
+        return;
+    }
+    if (nread == UV_EOF) {
+        LOGI("Exit.");
+        free(buf->base);
+
+        cb_close();
+        return;
+    }
+    if (nread < 0) {
+        LOGEV("Encountered a failure while reading stdin: ", uv_strerror(nread));
+        if (buf->base) free(buf->base);
+        uv_close((uv_handle_t *) t, on_close);
+        return;
+    }
+    buf->base[nread - 1] = '\0'; /* Remove junk and tailing \n */
+    if ((++ id) > INT_MAX) {
+        id = 0;
+    }
+    ac_request_cmd_t req = {
+            .type = AC_REQUEST_CMD,
+            .id = (int) id,
+            .cmd = buf->base
+    };
+    if (cb_recv((ac_request_t *) &req)) {
+        uv_close((uv_handle_t *) t, on_close);
+    }
+    free(buf->base);
+}
+
+int h_stdin(int (*on_input)(ac_request_t *req),
+            void (*on_close)(void)) {
+    cb_recv = on_input;
+    cb_close = on_close;
+    int r;
+    if ((r = uv_tty_init(loop, &tty, 0, 0))) return r;
+    if ((r = uv_read_start((uv_stream_t *) &tty, on_alloc, on_stdin))) return r;
+    return 0;
+}
\ No newline at end of file
-- 
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