/* Change PWD (Present Working Directory)
* cmdstr command string to process
* ipwdstr Initial PWD
*/
void rosh_cd(const char *cmdstr, const char *ipwdstr)
{
int rv;
char filestr[ROSH_PATH_SZ];
int cmdpos;
ROSH_DEBUG("CMD: '%s'\n", cmdstr);
/* Initialization */
filestr[0] = 0;
cmdpos = 0;
rv = 0;
/* skip the first word */
cmdpos = rosh_parse_sp_1(filestr, cmdstr, cmdpos);
cmdpos = rosh_parse_sp_1(filestr, cmdstr, cmdpos);
if (strlen(filestr) != 0)
rv = chdir(filestr);
else
rv = chdir(ipwdstr);
if (rv != 0) {
rosh_error(errno, "cd", filestr);
errno = 0;
} else {
#ifdef DO_DEBUG
if (getcwd(filestr, ROSH_PATH_SZ))
ROSH_DEBUG(" %s\n", filestr);
#endif /* DO_DEBUG */
}
} /* rosh_cd */
/* Concatenate multiple files to stdout
* cmdstr command string to process
*/
void rosh_cat(const char *cmdstr)
{
FILE *f;
char filestr[ROSH_PATH_SZ];
char buf[ROSH_BUF_SZ];
int numrd;
int cmdpos;
ROSH_DEBUG("CMD: '%s'\n", cmdstr);
/* Initialization */
filestr[0] = 0;
cmdpos = 0;
/* skip the first word */
cmdpos = rosh_parse_sp_1(filestr, cmdstr, cmdpos);
cmdpos = rosh_parse_sp_1(filestr, cmdstr, cmdpos);
while (strlen(filestr) > 0) {
printf("--File = '%s'\n", filestr);
f = fopen(filestr, "r");
if (f != NULL) {
numrd = fread(buf, 1, ROSH_BUF_SZ, f);
while (numrd > 0) {
fwrite(buf, 1, numrd, stdout);
numrd = fread(buf, 1, ROSH_BUF_SZ, f);
}
fclose(f);
} else {
rosh_error(errno, "cat", filestr);
errno = 0;
}
cmdpos = rosh_parse_sp_1(filestr, cmdstr, cmdpos);
}
} /* rosh_cat */
/* Page through a file like the more command
* cmdstr command string to process
* ipwdstr Initial PWD
*/
void rosh_more(const char *cmdstr)
{
int fd;
char filestr[ROSH_PATH_SZ];
int cmdpos;
int rows, cols;
char *scrbuf;
int ret;
ROSH_DEBUG("CMD: '%s'\n", cmdstr);
/* Initialization */
filestr[0] = 0;
cmdpos = 0;
ret = getscreensize(1, &rows, &cols);
if (ret) {
ROSH_DEBUG("getscreensize() fail(%d); fall back\n", ret);
ROSH_DEBUG("\tROWS='%d'\tCOLS='%d'\n", rows, cols);
/* If either fail, go under normal size, just in case */
if (!rows)
rows = 20;
if (!cols)
cols = 75;
}
ROSH_DEBUG("\tUSE ROWS='%d'\tCOLS='%d'\n", rows, cols);
/* 32 bit align beginning of row and over allocate */
scrbuf = malloc(rows * ((cols+3)&(INT_MAX - 3)));
if (!scrbuf)
return;
/* skip the first word */
cmdpos = rosh_parse_sp_1(filestr, cmdstr, cmdpos);
cmdpos = rosh_parse_sp_1(filestr, cmdstr, cmdpos);
if (strlen(filestr) > 0) {
/* There is no need to mess up the console if we don't have a
file */
rosh_console_raw();
while (strlen(filestr) > 0) {
printf("--File = '%s'\n", filestr);
fd = open(filestr, O_RDONLY);
if (fd != -1) {
rosh_more_fd(fd, rows, cols, scrbuf);
close(fd);
} else {
rosh_error(errno, "more", filestr);
errno = 0;
}
cmdpos = rosh_parse_sp_1(filestr, cmdstr, cmdpos);
}
rosh_console_std();
}
free(scrbuf);
} /* rosh_more */
/* List Directory based on cmdstr and pwdstr
* cmdstr command string to process
* pwdstr Present Working Directory string
*/
void rosh_ls(const char *cmdstr)
{
char filestr[ROSH_PATH_SZ];
char optstr[ROSH_OPT_SZ]; /* Options string */
int cmdpos, tpos; /* Position within cmdstr, temp position */
int numargs; /* number of non-option arguments */
int argpos; /* number of non-option arguments processed */
int optarr[3];
ROSH_DEBUG("CMD: '%s'\n", cmdstr);
/* Initialization */
filestr[0] = 0;
optstr[0] = 0;
cmdpos = 0;
numargs = 0;
argpos = 0;
/* skip the first word */
cmdpos = rosh_parse_sp_1(filestr, cmdstr, cmdpos);
tpos = rosh_parse_sp_1(filestr, cmdstr, cmdpos);
/* If there are no real arguments, substitute PWD */
if (strlen(filestr) == 0) {
strcpy(filestr, ".");
cmdpos = tpos;
} else { /* Parse for command line options */
while (strlen(filestr) > 0) {
numargs += rosh_ls_parse_opt(filestr, optstr);
tpos = rosh_parse_sp_1(filestr, cmdstr, tpos);
}
if (numargs == 0) {
strcpy(filestr, ".");
cmdpos = tpos;
} else {
cmdpos = rosh_parse_sp_1(filestr, cmdstr, cmdpos);
}
}
#ifdef DO_DEBUG
if (!strchr(optstr, 'l'))
strcat(optstr, "l");
#endif /* DO_DEBUG */
rosh_ls_arg_opt(optstr, optarr);
ROSH_DEBUG("\tfopt: '%s'\n", optstr);
while (strlen(filestr) > 0) {
if (rosh_ls_parse_opt(filestr, NULL)) {
rosh_ls_arg(filestr, optarr);
argpos++;
}
if (argpos < numargs)
cmdpos = rosh_parse_sp_1(filestr, cmdstr, cmdpos);
else
break;
}
} /* rosh_ls */
/* Page through a file like the more command
* cmdstr command string to process
* ipwdstr Initial PWD
*/
void rosh_more(const char *cmdstr)
{
int fd;
char filestr[ROSH_PATH_SZ];
int cmdpos;
int rows, cols;
ROSH_DEBUG("CMD: '%s'\n", cmdstr);
/* Initialization */
filestr[0] = 0;
cmdpos = 0;
if (getscreensize(1, &rows, &cols)) {
ROSH_DEBUG("getscreensize() fail; fall back\n");
ROSH_DEBUG("\tROWS='%d'\tCOLS='%d'\n", rows, cols);
/* If either fail, go under normal size, just in case */
if (!rows)
rows = 20;
if (!cols)
cols = 75;
}
ROSH_DEBUG("\tUSE ROWS='%d'\tCOLS='%d'\n", rows, cols);
/* skip the first word */
cmdpos = rosh_parse_sp_1(filestr, cmdstr, cmdpos);
cmdpos = rosh_parse_sp_1(filestr, cmdstr, cmdpos);
if (strlen(filestr) > 0) {
/* There is no need to mess up the console if we don't have a
file */
rosh_console_raw();
while (strlen(filestr) > 0) {
printf("--File = '%s'\n", filestr);
fd = open(filestr, O_RDONLY);
if (fd != -1) {
rosh_more_fd(fd, rows, cols);
close(fd);
} else {
rosh_error(errno, "more", filestr);
errno = 0;
}
cmdpos = rosh_parse_sp_1(filestr, cmdstr, cmdpos);
}
rosh_console_std();
}
} /* rosh_more */
/* Process a single command string and call handling function
* cmdstr command string to process
* ipwdstr Initial Present Working Directory string
* returns Whether to exit prompt
*/
char rosh_command(const char *cmdstr, const char *ipwdstr)
{
char do_exit;
char tstr[ROSH_CMD_SZ];
int tlen;
do_exit = false;
ROSH_DEBUG("--cmd:'%s'\n", cmdstr);
tlen = rosh_parse_sp_1(tstr, cmdstr, 0);
switch (cmdstr[0]) {
case 'e':
case 'E':
case 'q':
case 'Q':
if ((strncasecmp("exit", tstr, tlen) == 0) ||
(strncasecmp("quit", tstr, tlen) == 0))
do_exit = true;
else
rosh_help(1, NULL);
break;
case 'c':
case 'C': /* run 'cd' 'cat' 'cfg' */
switch (cmdstr[1]) {
case 'a':
case 'A':
if (strncasecmp("cat", tstr, tlen) == 0)
rosh_cat(cmdstr);
else
rosh_help(1, NULL);
break;
case 'd':
case 'D':
if (strncasecmp("cd", tstr, tlen) == 0)
rosh_cd(cmdstr, ipwdstr);
else
rosh_help(1, NULL);
break;
case 'f':
case 'F':
if (strncasecmp("cfg", tstr, tlen) == 0)
rosh_cfg();
else
rosh_help(1, NULL);
break;
default:
rosh_help(1, NULL);
}
break;
case 'd':
case 'D': /* run 'dir' */
if (strncasecmp("dir", tstr, tlen) == 0)
rosh_dir(cmdstr);
else
rosh_help(1, NULL);
break;
case 'h':
case 'H':
case '?':
if ((strncasecmp("help", tstr, tlen) == 0) || (tlen == 1))
rosh_help(2, cmdstr);
else
rosh_help(1, NULL);
break;
case 'l':
case 'L': /* run 'ls' 'less' */
switch (cmdstr[1]) {
case 0:
case ' ':
case 's':
case 'S':
if (strncasecmp("ls", tstr, tlen) == 0)
rosh_ls(cmdstr);
else
rosh_help(1, NULL);
break;
case 'e':
case 'E':
if (strncasecmp("less", tstr, tlen) == 0)
rosh_less(cmdstr);
else
rosh_help(1, NULL);
break;
default:
rosh_help(1, NULL);
}
break;
case 'm':
case 'M':
switch (cmdstr[1]) {
case 'a':
case 'A':
if (strncasecmp("man", tstr, tlen) == 0)
rosh_help(2, cmdstr);
else
rosh_help(1, NULL);
break;
case 'o':
case 'O':
if (strncasecmp("more", tstr, tlen) == 0)
rosh_more(cmdstr);
else
rosh_help(1, NULL);
break;
default:
rosh_help(1, NULL);
}
break;
case 'p':
case 'P': /* run 'pwd' */
if (strncasecmp("pwd", tstr, tlen) == 0)
rosh_pwd(cmdstr);
else
rosh_help(1, NULL);
break;
case 'r':
case 'R': /* run 'run' */
switch (cmdstr[1]) {
case 0:
case ' ':
case 'e':
case 'E':
if (strncasecmp("reboot", tstr, tlen) == 0)
rosh_reboot();
else
rosh_help(1, NULL);
break;
case 'u':
case 'U':
if (strncasecmp("run", tstr, tlen) == 0)
rosh_run(cmdstr);
else
rosh_help(1, NULL);
break;
}
break;
case 'v':
case 'V':
if (strncasecmp("version", tstr, tlen) == 0)
rosh_version(1);
else
rosh_help(1, NULL);
break;
case 0:
case '\n':
break;
default:
rosh_help(1, NULL);
} /* switch(cmdstr[0]) */
return do_exit;
} /* rosh_command */
