osd-contiki/apps/shell/shell-file.c

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/*
* Copyright (c) 2008, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
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* $Id: shell-file.c,v 1.14 2010/04/12 13:21:58 nvt-se Exp $
*/
/**
* \file
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* File-related shell commands
* \author
* Adam Dunkels <adam@sics.se>
*/
#include "contiki.h"
#include "shell-file.h"
#include "cfs/cfs.h"
#include <stdio.h>
#include <string.h>
#define MAX_FILENAME_LEN 40
#define MAX_BLOCKSIZE 40
/*---------------------------------------------------------------------------*/
PROCESS(shell_ls_process, "ls");
SHELL_COMMAND(ls_command,
"ls",
"ls: list files",
&shell_ls_process);
PROCESS(shell_append_process, "append");
SHELL_COMMAND(append_command,
"append",
"append <filename>: append to file",
&shell_append_process);
PROCESS(shell_write_process, "write");
SHELL_COMMAND(write_command,
"write",
"write <filename>: write to file",
&shell_write_process);
PROCESS(shell_read_process, "read");
SHELL_COMMAND(read_command,
"read",
"read <filename> [offset] [block size]: read from a file, with the offset and the block size as options",
&shell_read_process);
PROCESS(shell_rm_process, "rm");
SHELL_COMMAND(rm_command,
"rm",
"rm <filename>: remove the file named filename",
&shell_rm_process);
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(shell_ls_process, ev, data)
{
static struct cfs_dir dir;
static cfs_offset_t totsize;
struct cfs_dirent dirent;
char buf[32];
PROCESS_BEGIN();
if(cfs_opendir(&dir, "/") != 0) {
shell_output_str(&ls_command, "Cannot open directory", "");
} else {
totsize = 0;
while(cfs_readdir(&dir, &dirent) == 0) {
totsize += dirent.size;
sprintf(buf, "%lu ", (unsigned long)dirent.size);
/* printf("'%s'\n", dirent.name);*/
shell_output_str(&ls_command, buf, dirent.name);
}
cfs_closedir(&dir);
sprintf(buf, "%lu", (unsigned long)totsize);
shell_output_str(&ls_command, "Total size: ", buf);
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(shell_append_process, ev, data)
{
static int fd = 0;
struct shell_input *input;
PROCESS_EXITHANDLER(cfs_close(fd));
PROCESS_BEGIN();
fd = cfs_open(data, CFS_WRITE | CFS_APPEND);
if(fd < 0) {
shell_output_str(&append_command,
"append: could not open file for writing: ", data);
} else {
while(1) {
PROCESS_WAIT_EVENT_UNTIL(ev == shell_event_input);
input = data;
/* printf("cat input %d %d\n", input->len1, input->len2);*/
if(input->len1 + input->len2 == 0) {
cfs_close(fd);
PROCESS_EXIT();
}
cfs_write(fd, input->data1, input->len1);
cfs_write(fd, input->data2, input->len2);
shell_output(&append_command,
input->data1, input->len1,
input->data2, input->len2);
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(shell_write_process, ev, data)
{
static int fd = 0;
struct shell_input *input;
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int r;
PROCESS_EXITHANDLER(cfs_close(fd));
PROCESS_BEGIN();
fd = cfs_open(data, CFS_WRITE);
if(fd < 0) {
shell_output_str(&write_command,
"write: could not open file for writing: ", data);
} else {
while(1) {
PROCESS_WAIT_EVENT_UNTIL(ev == shell_event_input);
input = data;
/* printf("cat input %d %d\n", input->len1, input->len2);*/
if(input->len1 + input->len2 == 0) {
cfs_close(fd);
PROCESS_EXIT();
}
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r = 0;
if(input->len1 > 0) {
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r = cfs_write(fd, input->data1, input->len1);
}
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if(r >= 0 && input->len2 > 0) {
r = cfs_write(fd, input->data2, input->len2);
}
if(r < 0) {
shell_output_str(&write_command, "write: could not write to the file",
NULL);
} else {
shell_output(&write_command,
input->data1, input->len1,
input->data2, input->len2);
}
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(shell_read_process, ev, data)
{
static int fd = 0;
static int block_size = MAX_BLOCKSIZE;
char *next;
char filename[MAX_FILENAME_LEN];
int len;
int offset = 0;
char buf[MAX_BLOCKSIZE];
struct shell_input *input;
PROCESS_EXITHANDLER(cfs_close(fd));
PROCESS_BEGIN();
if(data != NULL) {
next = strchr(data, ' ');
if(next == NULL) {
strncpy(filename, data, sizeof(filename));
} else {
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len = (int)(next - (char *)data);
if(len <= 0) {
shell_output_str(&read_command,
"read: filename too short: ", data);
PROCESS_EXIT();
}
if(len > MAX_FILENAME_LEN) {
shell_output_str(&read_command,
"read: filename too long: ", data);
PROCESS_EXIT();
}
memcpy(filename, data, len);
filename[len] = 0;
offset = shell_strtolong(next, NULL);
next++;
next = strchr(next, ' ');
if(next != NULL) {
block_size = shell_strtolong(next, NULL);
if(block_size > MAX_BLOCKSIZE) {
shell_output_str(&read_command,
"read: block size too large: ", data);
PROCESS_EXIT();
}
}
}
fd = cfs_open(filename, CFS_READ);
cfs_seek(fd, offset, CFS_SEEK_SET);
if(fd < 0) {
shell_output_str(&read_command,
"read: could not open file for reading: ", filename);
} else {
while(1) {
len = cfs_read(fd, buf, block_size);
if(len <= 0) {
cfs_close(fd);
PROCESS_EXIT();
}
shell_output(&read_command,
buf, len, "", 0);
process_post(&shell_read_process, PROCESS_EVENT_CONTINUE, NULL);
PROCESS_WAIT_EVENT_UNTIL(ev == PROCESS_EVENT_CONTINUE ||
ev == shell_event_input);
if(ev == shell_event_input) {
input = data;
/* printf("cat input %d %d\n", input->len1, input->len2);*/
if(input->len1 + input->len2 == 0) {
cfs_close(fd);
PROCESS_EXIT();
}
}
}
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(shell_rm_process, ev, data)
{
PROCESS_BEGIN();
if(data != NULL) {
cfs_remove(data);
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
void
shell_file_init(void)
{
shell_register_command(&ls_command);
shell_register_command(&write_command);
shell_register_command(&append_command);
shell_register_command(&read_command);
shell_register_command(&rm_command);
}
/*---------------------------------------------------------------------------*/