/*
* Read and parse an interactive command.
* The first word on the line is assigned to "cmd". If
* there are no arguments on the command line, then "curdir"
* is returned as the argument. If there are arguments
* on the line they are returned one at a time on each
* successive call to getcmd. Each argument is first assigned
* to "name". If it does not start with "/" the pathname in
* "curdir" is prepended to it. Finally "canon" is called to
* eliminate any embedded ".." components.
*/
static void
getcmd(char *curdir, char *cmd, char *name, size_t size, struct arglist *ap)
{
char *cp;
static char input[BUFSIZ];
char output[BUFSIZ];
# define rawname input /* save space by reusing input buffer */
/*
* Check to see if still processing arguments.
*/
if (ap->argcnt > 0)
goto retnext;
if (nextarg != NULL)
goto getnext;
/*
* Read a command line and trim off trailing white space.
*/
do {
fprintf(stderr, "restore > ");
fflush(stderr);
if (fgets(input, BUFSIZ, terminal) == NULL) {
strcpy(cmd, "quit");
return;
}
} while (input[0] == '\n');
for (cp = &input[strlen(input) - 2]; *cp == ' ' || *cp == '\t'; cp--)
/* trim off trailing white space and newline */;
*++cp = '\0';
/*
* Copy the command into "cmd".
*/
cp = copynext(input, cmd);
ap->cmd = cmd;
/*
* If no argument, use curdir as the default.
*/
if (*cp == '\0') {
strncpy(name, curdir, size);
name[size - 1] = '\0';
return;
}
nextarg = cp;
/*
* Find the next argument.
*/
getnext:
cp = copynext(nextarg, rawname);
if (*cp == '\0')
nextarg = NULL;
else
nextarg = cp;
/*
* If it is an absolute pathname, canonicalize it and return it.
*/
if (rawname[0] == '/') {
canon(rawname, name, size);
} else {
/*
* For relative pathnames, prepend the current directory to
* it then canonicalize and return it.
*/
snprintf(output, sizeof(output), "%s/%s", curdir, rawname);
canon(output, name, size);
}
if (glob(name, GLOB_ALTDIRFUNC, NULL, &ap->glob) < 0)
fprintf(stderr, "%s: out of memory\n", ap->cmd);
if (ap->glob.gl_pathc == 0)
return;
ap->freeglob = 1;
ap->argcnt = ap->glob.gl_pathc;
retnext:
strncpy(name, ap->glob.gl_pathv[ap->glob.gl_pathc - ap->argcnt], size);
name[size - 1] = '\0';
if (--ap->argcnt == 0) {
ap->freeglob = 0;
globfree(&ap->glob);
}
# undef rawname
}
/*
* Read and parse an interactive command.
* The first word on the line is assigned to "cmd". If
* there are no arguments on the command line, then "curdir"
* is returned as the argument. If there are arguments
* on the line they are returned one at a time on each
* successive call to getcmd. Each argument is first assigned
* to "name". If it does not start with "/" the pathname in
* "curdir" is prepended to it. Finally "canon" is called to
* eliminate any embedded ".." components.
*/
static void
getcmd(char *curdir, char *cmd, size_t cmdlen, char *name, size_t namelen,
struct arglist *ap)
{
char *cp;
static char input[BUFSIZ];
char output[BUFSIZ];
# define rawname input /* save space by reusing input buffer */
int globretval;
/*
* Check to see if still processing arguments.
*/
if (ap->argcnt > 0)
goto retnext;
if (nextarg != NULL)
goto getnext;
/*
* Read a command line and trim off trailing white space.
*/
do {
(void)fprintf(stderr, "%s > ", __progname);
(void)fflush(stderr);
if (fgets(input, sizeof input, terminal) == NULL) {
(void)strlcpy(cmd, "quit", cmdlen);
return;
}
} while (input[0] == '\n' || input[0] == '\0');
for (cp = &input[strlen(input) - 1];
cp >= input && (*cp == ' ' || *cp == '\t' || *cp == '\n'); cp--)
/* trim off trailing white space and newline */;
*++cp = '\0';
/*
* Copy the command into "cmd".
*/
cp = copynext(input, cmd);
ap->cmd = cmd;
/*
* If no argument, use curdir as the default.
*/
if (*cp == '\0') {
(void)strlcpy(name, curdir, MAXPATHLEN);
return;
}
nextarg = cp;
/*
* Find the next argument.
*/
getnext:
cp = copynext(nextarg, rawname);
if (*cp == '\0')
nextarg = NULL;
else
nextarg = cp;
/*
* If it is an absolute pathname, canonicalize it and return it.
*/
if (rawname[0] == '/') {
canon(rawname, name, namelen);
} else {
/*
* For relative pathnames, prepend the current directory to
* it then canonicalize and return it.
*/
snprintf(output, sizeof(output), "%s/%s", curdir, rawname);
canon(output, name, namelen);
}
if ((globretval = glob(name, GLOB_ALTDIRFUNC | GLOB_NOESCAPE,
NULL, &ap->glob)) < 0) {
fprintf(stderr, "%s: %s: ", ap->cmd, name);
switch (globretval) {
case GLOB_NOSPACE:
fprintf(stderr, "out of memory\n");
break;
case GLOB_NOMATCH:
fprintf(stderr, "no filename match.\n");
break;
case GLOB_ABORTED:
fprintf(stderr, "glob() aborted.\n");
break;
default:
fprintf(stderr, "unknown error!\n");
break;
}
}
if (ap->glob.gl_pathc == 0)
return;
ap->freeglob = 1;
ap->argcnt = ap->glob.gl_pathc;
retnext:
strlcpy(name, ap->glob.gl_pathv[ap->glob.gl_pathc - ap->argcnt],
MAXPATHLEN);
if (--ap->argcnt == 0) {
ap->freeglob = 0;
globfree(&ap->glob);
}
# undef rawname
}