142 lines
3.0 KiB
C
142 lines
3.0 KiB
C
/*
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* Copyright (c) 2006-2018, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2015-09-25 Bernard the first verion for FinSH
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*/
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#include <rtthread.h>
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#if defined(FINSH_USING_MSH) && defined(RT_USING_DFS)
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#include <finsh.h>
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#include "msh.h"
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#include <dfs_posix.h>
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static int msh_readline(int fd, char *line_buf, int size)
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{
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char ch;
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int index = 0;
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do
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{
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if (read(fd, &ch, 1) != 1)
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{
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/* nothing in this file */
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return 0;
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}
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}
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while (ch == '\n' || ch == '\r');
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/* set the first character */
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line_buf[index ++] = ch;
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while (index < size)
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{
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if (read(fd, &ch, 1) == 1)
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{
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if (ch == '\n' || ch == '\r')
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{
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line_buf[index] = '\0';
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break;
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}
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line_buf[index++] = ch;
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}
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else
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{
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line_buf[index] = '\0';
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break;
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}
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}
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return index;
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}
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int msh_exec_script(const char *cmd_line, int size)
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{
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int ret;
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int fd = -1;
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char *pg_name;
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int length, cmd_length = 0;
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if (size == 0) return -RT_ERROR;
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/* get the length of command0 */
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while ((cmd_line[cmd_length] != ' ' && cmd_line[cmd_length] != '\t') && cmd_length < size)
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cmd_length ++;
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/* get name length */
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length = cmd_length + 32;
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/* allocate program name memory */
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pg_name = (char *) rt_malloc(length);
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if (pg_name == RT_NULL) return -RT_ENOMEM;
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/* copy command0 */
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memcpy(pg_name, cmd_line, cmd_length);
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pg_name[cmd_length] = '\0';
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if (strstr(pg_name, ".sh") != RT_NULL || strstr(pg_name, ".SH") != RT_NULL)
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{
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/* try to open program */
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fd = open(pg_name, O_RDONLY, 0);
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/* search in /bin path */
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if (fd < 0)
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{
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rt_snprintf(pg_name, length - 1, "/bin/%.*s", cmd_length, cmd_line);
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fd = open(pg_name, O_RDONLY, 0);
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}
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}
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rt_free(pg_name);
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if (fd >= 0)
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{
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/* found script */
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char *line_buf;
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int length;
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line_buf = (char *) rt_malloc(RT_CONSOLEBUF_SIZE);
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/* read line by line and then exec it */
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do
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{
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length = msh_readline(fd, line_buf, RT_CONSOLEBUF_SIZE);
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if (length > 0)
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{
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char ch = '\0';
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int index;
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for (index = 0; index < length; index ++)
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{
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ch = line_buf[index];
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if (ch == ' ' || ch == '\t') continue;
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else break;
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}
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if (ch != '#') /* not a comment */
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msh_exec(line_buf, length);
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}
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}
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while (length > 0);
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close(fd);
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rt_free(line_buf);
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ret = 0;
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}
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else
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{
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ret = -1;
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}
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return ret;
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}
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#endif /* defined(FINSH_USING_MSH) && defined(RT_USING_DFS) */
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