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96 lines
1.5 KiB
C
96 lines
1.5 KiB
C
// Copyright (c) 2014-2017, The Lemon Man, All rights reserved. LGPLv3
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#include <stdio.h>
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#include "transport.h"
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extern io_backend_t iob_pipe;
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static io_backend_t *io_backends[] = {
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// #if __WINDOWS__ || __CYGWIN__ || MINGW32
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// #warning TODO: add proper IO backend for windows here
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// #else
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&iob_pipe,
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// #endif
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NULL,
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};
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static io_backend_t *sel_backend = &iob_pipe;
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int iob_select(const char *name) {
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io_backend_t *iob;
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iob = io_backends[0];
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if (!iob) {
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return 0;
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}
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if (sel_backend && sel_backend->deinit) {
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sel_backend->deinit ();
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}
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sel_backend = iob;
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if (sel_backend->init) {
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sel_backend->init ();
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}
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return 1;
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}
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void *iob_open(const char *path) {
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if (!sel_backend) {
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return NULL;
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}
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return sel_backend->open (path);
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}
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int iob_close(void *fp) {
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if (!sel_backend) {
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return E_NOIF;
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}
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return sel_backend->close (fp);
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}
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int iob_config(void *fp, void *cfg) {
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if (!sel_backend) {
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return E_NOIF;
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}
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return sel_backend->config (fp, cfg);
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}
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int iob_write(void *fp, const uint8_t *buf, const uint32_t buf_len) {
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uint32_t done;
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if (!sel_backend) {
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return E_NOIF;
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}
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for (done = 0; done < buf_len;) {
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int ret = sel_backend->write (fp, buf + done, buf_len - done, 100);
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if (ret < 1) {
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break;
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}
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done += ret;
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}
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return done;
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}
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int iob_read(void *fp, uint8_t *buf, const uint32_t buf_len) {
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uint32_t done;
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if (!sel_backend) {
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return E_NOIF;
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}
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for (done = 0; done < buf_len;) {
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int ret = sel_backend->read (fp, buf + done, buf_len - done, 100);
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if (ret < 1) {
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break;
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}
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done += ret;
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}
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return done;
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}
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