2b5723d455
Each backend can configure separately features like colors on/off, VT100 handling and so on. This can be very handy for planned MQTT backend. Shell will not send VT100 commands when VT100 is not enabled globally or for particular backend. Signed-off-by: Jakub Rzeszutko <jakub.rzeszutko@nordicsemi.no>
135 lines
2.8 KiB
C
135 lines
2.8 KiB
C
/*
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* Shell backend used for testing
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*
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* Copyright (c) 2018 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <shell/shell_dummy.h>
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#include <init.h>
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SHELL_DUMMY_DEFINE(shell_transport_dummy);
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SHELL_DEFINE(shell_dummy, CONFIG_SHELL_PROMPT_DUMMY, &shell_transport_dummy, 1,
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0, SHELL_FLAG_OLF_CRLF);
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static int init(const struct shell_transport *transport,
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const void *config,
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shell_transport_handler_t evt_handler,
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void *context)
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{
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struct shell_dummy *sh_dummy = (struct shell_dummy *)transport->ctx;
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if (sh_dummy->initialized) {
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return -EINVAL;
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}
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sh_dummy->initialized = true;
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return 0;
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}
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static int uninit(const struct shell_transport *transport)
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{
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struct shell_dummy *sh_dummy = (struct shell_dummy *)transport->ctx;
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if (!sh_dummy->initialized) {
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return -ENODEV;
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}
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sh_dummy->initialized = false;
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return 0;
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}
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static int enable(const struct shell_transport *transport, bool blocking)
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{
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struct shell_dummy *sh_dummy = (struct shell_dummy *)transport->ctx;
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if (!sh_dummy->initialized) {
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return -ENODEV;
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}
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return 0;
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}
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static int write(const struct shell_transport *transport,
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const void *data, size_t length, size_t *cnt)
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{
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struct shell_dummy *sh_dummy = (struct shell_dummy *)transport->ctx;
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size_t store_cnt;
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if (!sh_dummy->initialized) {
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*cnt = 0;
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return -ENODEV;
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}
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store_cnt = length;
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if (sh_dummy->len + store_cnt >= sizeof(sh_dummy->buf)) {
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store_cnt = sizeof(sh_dummy->buf) - sh_dummy->len - 1;
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}
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memcpy(sh_dummy->buf + sh_dummy->len, data, store_cnt);
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sh_dummy->len += store_cnt;
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*cnt = length;
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return 0;
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}
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static int read(const struct shell_transport *transport,
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void *data, size_t length, size_t *cnt)
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{
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struct shell_dummy *sh_dummy = (struct shell_dummy *)transport->ctx;
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if (!sh_dummy->initialized) {
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return -ENODEV;
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}
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*cnt = 0;
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return 0;
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}
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const struct shell_transport_api shell_dummy_transport_api = {
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.init = init,
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.uninit = uninit,
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.enable = enable,
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.write = write,
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.read = read
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};
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static int enable_shell_dummy(const struct device *arg)
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{
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ARG_UNUSED(arg);
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static const struct shell_backend_config_flags cfg_flags =
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SHELL_DEFAULT_BACKEND_CONFIG_FLAGS;
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shell_init(&shell_dummy, NULL, cfg_flags, true, LOG_LEVEL_INF);
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return 0;
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}
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SYS_INIT(enable_shell_dummy, POST_KERNEL, 0);
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const struct shell *shell_backend_dummy_get_ptr(void)
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{
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return &shell_dummy;
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}
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const char *shell_backend_dummy_get_output(const struct shell *shell,
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size_t *sizep)
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{
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struct shell_dummy *sh_dummy = (struct shell_dummy *)shell->iface->ctx;
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sh_dummy->buf[sh_dummy->len] = '\0';
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*sizep = sh_dummy->len;
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sh_dummy->len = 0;
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return sh_dummy->buf;
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}
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void shell_backend_dummy_clear_output(const struct shell *shell)
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{
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struct shell_dummy *sh_dummy = (struct shell_dummy *)shell->iface->ctx;
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sh_dummy->buf[0] = '\0';
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sh_dummy->len = 0;
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}
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