/* Note that we only do io redirection when we get to here - we also
* postpone some other things until now. */
static void
docommand(wordlist *wlist)
{
char *r, *s, *t;
int nargs;
int i;
struct comm *command;
wordlist *wl, *nextc, *ee, *rwlist;
if (cp_debug) {
printf("docommand ");
wl_print(wlist, stdout);
putc('\n', stdout);
}
/* Do all the things that used to be done by cshpar when the line
* was read... */
wlist = cp_variablesubst(wlist);
pwlist(wlist, "After variable substitution");
wlist = cp_bquote(wlist);
pwlist(wlist, "After backquote substitution");
wlist = cp_doglob(wlist);
pwlist(wlist, "After globbing");
pwlist_echo(wlist, "Becomes >");
if (!wlist || !wlist->wl_word) /*CDHW need to free wlist in second case? CDHW*/
return;
/* Now loop through all of the commands given. */
rwlist = wlist;
do {
for (nextc = wlist; nextc; nextc = nextc->wl_next)
if (eq(nextc->wl_word, cp_csep))
break;
/* Temporarily hide the rest of the command... */
if (nextc && nextc->wl_prev)
nextc->wl_prev->wl_next = NULL;
ee = wlist->wl_prev;
if (ee)
wlist->wl_prev = NULL;
if (nextc == wlist) {
/* There was no text... */
goto out;
}
/* And do the redirection. */
cp_ioreset();
for (i = 0; noredirect[i]; i++)
if (eq(wlist->wl_word, noredirect[i]))
break;
if (!noredirect[i]) {
if (!(wlist = cp_redirect(wlist))) {
cp_ioreset();
return;
}
}
/* Get rid of all the 8th bits now... */
cp_striplist(wlist);
s = wlist->wl_word;
/* Look for the command in the command list. */
for (i = 0; cp_coms[i].co_comname; i++) {
/* strcmp(cp_coms[i].co_comname, s) ... */
for (t = cp_coms[i].co_comname, r = s; *t && *r;
t++, r++)
if (*t != *r)
break;
if (!*t && !*r)
break;
}
/* Now give the user-supplied command routine a try... */
if (!cp_coms[i].co_func && cp_oddcomm(s, wlist->wl_next))
goto out;
/* If it's not there, try it as a unix command. */
if (!cp_coms[i].co_comname) {
if (cp_dounixcom && cp_unixcom(wlist))
goto out;
fprintf(cp_err,"%s: no such command available in %s\n",
s, cp_program);
goto out;
/* If it's there but spiceonly, and this is nutmeg, error. */
} else if (!cp_coms[i].co_func && ft_nutmeg &&
(cp_coms[i].co_spiceonly)) {
fprintf(cp_err,"%s: command available only in spice\n",
s);
goto out;
}
/* The command was a valid spice/nutmeg command. */
command = &cp_coms[i];
nargs = 0;
for (wl = wlist->wl_next; wl; wl = wl->wl_next)
nargs++;
{
if (nargs < command->co_minargs) {
if (command->co_argfn) {
(*command->co_argfn) (wlist->wl_next, command);
} else {
fprintf(cp_err, "%s: too few args.\n", s);
}
} else if (nargs > command->co_maxargs) {
fprintf(cp_err, "%s: too many args.\n", s);
} else {
(*command->co_func) (wlist->wl_next);
}
}
/* Now fix the pointers and advance wlist. */
out: wlist->wl_prev = ee;
if (nextc) {
for(wl=wlist; wl->wl_next; wl=wl->wl_next)
;
wl->wl_next = nextc;
nextc->wl_prev = wl;
wlist = nextc->wl_next;
}
} while (nextc && wlist);
wl_free(rwlist);
/* Do periodic sorts of things... */
cp_periodic();
cp_ioreset();
return;
}
/* Note that we only do io redirection when we get to here - we also
* postpone some other things until now. */
static void
docommand(wordlist *wlist)
{
wordlist *rwlist;
if (cp_debug) {
printf("docommand ");
wl_print(wlist, stdout);
putc('\n', stdout);
}
/* Do all the things that used to be done by cshpar when the line
* was read... */
wlist = cp_variablesubst(wlist);
pwlist(wlist, "After variable substitution");
wlist = cp_bquote(wlist);
pwlist(wlist, "After backquote substitution");
wlist = cp_doglob(wlist);
pwlist(wlist, "After globbing");
pwlist_echo(wlist, "Becomes >");
if (!wlist || !wlist->wl_word) /*CDHW need to free wlist in second case? CDHW*/
return;
/* Now loop through all of the commands given. */
rwlist = wlist;
while (wlist) {
char *s;
int i;
struct comm *command;
wordlist *nextc, *ee;
nextc = wl_find(cp_csep, wlist);
if (nextc == wlist) { /* skip leading `;' */
wlist = wlist->wl_next;
continue;
}
/* Temporarily hide the rest of the command... */
ee = wlist->wl_prev;
wl_chop(nextc);
wl_chop(wlist);
/* And do the redirection. */
cp_ioreset();
for (i = 0; noredirect[i]; i++)
if (eq(wlist->wl_word, noredirect[i]))
break;
if (!noredirect[i])
if ((wlist = cp_redirect(wlist)) == NULL) {
cp_ioreset();
return;
}
/* Get rid of all the 8th bits now... */
cp_striplist(wlist);
s = wlist->wl_word;
/* Look for the command in the command list. */
for (i = 0; cp_coms[i].co_comname; i++)
if (strcasecmp(cp_coms[i].co_comname, s) == 0)
break;
command = &cp_coms[i];
/* Now give the user-supplied command routine a try... */
if (!command->co_func && cp_oddcomm(s, wlist->wl_next))
goto out;
/* If it's not there, try it as a unix command. */
if (!command->co_comname) {
if (cp_dounixcom && cp_unixcom(wlist))
goto out;
fprintf(cp_err, "%s: no such command available in %s\n",
s, cp_program);
goto out;
/* If it hasn't been implemented */
} else if (!command->co_func) {
fprintf(cp_err, "%s: command is not implemented\n", s);
goto out;
/* If it's there but spiceonly, and this is nutmeg, error. */
} else if (ft_nutmeg && command->co_spiceonly) {
fprintf(cp_err, "%s: command available only in spice\n", s);
goto out;
}
/* The command was a valid spice/nutmeg command. */
{
int nargs = wl_length(wlist->wl_next);
if (nargs < command->co_minargs) {
if (command->co_argfn) {
command->co_argfn (wlist->wl_next, command);
} else {
fprintf(cp_err, "%s: too few args.\n", s);
}
} else if (nargs > command->co_maxargs) {
fprintf(cp_err, "%s: too many args.\n", s);
} else {
command->co_func (wlist->wl_next);
}
}
out:
wl_append(ee, wlist);
wl_append(wlist, nextc);
if (!ee)
rwlist = wlist;
wlist = nextc;
}
wl_free(rwlist);
/* Do periodic sorts of things... */
cp_periodic();
cp_ioreset();
}
wordlist *
cp_lexer(char *string)
{
int c, d;
int i, j;
wordlist *wlist = NULL, *cw = NULL;
char buf[NEW_BSIZE_SP], linebuf[NEW_BSIZE_SP];
int paren;
if (!cp_inp_cur || cp_inp_cur != cp_in)
cp_inp_cur = cp_in;
/* prompt for string if none is passed */
if (!string && cp_interactive) {
cp_ccon(TRUE);
prompt();
}
nloop:
wlist = cw = NULL;
i = 0;
j = 0;
paren = 0;
bzero(linebuf, NEW_BSIZE_SP);
bzero(buf, NEW_BSIZE_SP);
for (;;) {
c = cp_readchar(&string, cp_inp_cur);
gotchar:
if (string && (c == ESCAPE))
continue;
if ((c != EOF) && (c != ESCAPE))
linebuf[j++] = (char) c;
if (c != EOF)
numeofs = 0;
if (i == NEW_BSIZE_SP - 1) {
fprintf(cp_err, "Warning: word too long.\n");
c = ' ';
}
if (j == NEW_BSIZE_SP - 1) {
fprintf(cp_err, "Warning: line too long.\n");
if (cp_bqflag)
c = EOF;
else
c = '\n';
}
if (c != EOF) /* Don't need to do this really. */
c = strip(c);
if ((c == '\\' && DIR_TERM != '\\') || (c == '\026') /* ^V */ ) {
c = quote(cp_readchar(&string, cp_inp_cur));
linebuf[j++] = (char) strip(c);
}
if ((c == '\n') && cp_bqflag)
c = ' ';
if ((c == EOF) && cp_bqflag)
c = '\n';
if ((c == cp_hash) && !cp_interactive && (j == 1)) {
wl_free(wlist);
wlist = cw = NULL;
if (string)
return NULL;
while (((c = cp_readchar(&string, cp_inp_cur)) != '\n') && (c != EOF))
;
goto nloop;
}
if ((c == '(') || (c == '[')) /* MW. Nedded by parse() */
paren++;
else if ((c == ')') || (c == ']'))
paren--;
switch (c) {
case ' ':
case '\t':
if (i > 0)
newword;
break;
case '\n':
if (i) {
buf[i] = '\0';
newword;
}
if (!cw)
append(NULL);
goto done;
case '\'':
while (((c = cp_readchar(&string, cp_inp_cur)) != '\'') &&
(i < NEW_BSIZE_SP - 1))
{
if ((c == '\n') || (c == EOF) || (c == ESCAPE))
goto gotchar;
buf[i++] = (char) quote(c);
linebuf[j++] = (char) c;
}
linebuf[j++] = '\'';
break;
case '"':
case '`':
d = c;
buf[i++] = (char) d;
while (((c = cp_readchar(&string, cp_inp_cur)) != d) &&
(i < NEW_BSIZE_SP - 2))
{
if ((c == '\n') || (c == EOF) || (c == ESCAPE))
goto gotchar;
if (c == '\\') {
linebuf[j++] = (char) c;
c = cp_readchar(&string, cp_inp_cur);
buf[i++] = (char) quote(c);
linebuf[j++] = (char) c;
} else {
buf[i++] = (char) c;
linebuf[j++] = (char) c;
}
}
buf[i++] = (char) d;
linebuf[j++] = (char) d;
break;
case '\004':
case EOF:
if (cp_interactive && !cp_nocc && !string) {
if (j == 0) {
if (cp_ignoreeof && (numeofs++ < 23)) {
fputs("Use \"quit\" to quit.\n", stdout);
} else {
fputs("quit\n", stdout);
// return ;
// cp_doquit();
}
append(NULL);
goto done;
}
// cp_ccom doesn't mess wlist, read only access to wlist->wl_word
cp_ccom(wlist, buf, FALSE);
wl_free(wlist);
(void) fputc('\r', cp_out);
prompt();
for (j = 0; linebuf[j]; j++)
#ifdef TIOCSTI
(void) ioctl(fileno(cp_out), TIOCSTI, linebuf + j);
#else
fputc(linebuf[j], cp_out); /* But you can't edit */
#endif
wlist = cw = NULL;
goto nloop;
}
/* EOF during a source */
if (cp_interactive) {
fputs("quit\n", stdout);
cp_doquit();
append(NULL);
goto done;
}
wl_free(wlist);
return NULL;
case ESCAPE:
if (cp_interactive && !cp_nocc) {
fputs("\b\b \b\b\r", cp_out);
prompt();
for (j = 0; linebuf[j]; j++)
#ifdef TIOCSTI
(void) ioctl(fileno(cp_out), TIOCSTI, linebuf + j);
#else
fputc(linebuf[j], cp_out); /* But you can't edit */
#endif
// cp_ccom doesn't mess wlist, read only access to wlist->wl_word
cp_ccom(wlist, buf, TRUE);
wl_free(wlist);
wlist = cw = NULL;
goto nloop;
}
goto ldefault;
case ',':
if ((paren < 1) && (i > 0)) {
newword;
break;
}
goto ldefault;
case ';': /* CDHW semicolon inside parentheses is part of expression */
if (paren > 0) {
buf[i++] = (char) c;
break;
}
goto ldefault;
case '&': /* va: $&name is one word */
if ((i >= 1) && (buf[i-1] == '$') && (c == '&')) {
buf[i++] = (char) c;
break;
}
goto ldefault;
case '<':
case '>': /* va: <=, >= are unbreakable words */
if (string)
if ((i == 0) && (*string == '=')) {
buf[i++] = (char) c;
break;
}
goto ldefault;
default:
/* We have to remember the special case $<
* here
*/
ldefault:
if ((cp_chars[c] & CPC_BRL) && (i > 0))
if ((c != '<') || (buf[i-1] != '$'))
newword;
buf[i++] = (char) c;
if (cp_chars[c] & CPC_BRR)
if ((c != '<') || (i < 2) || (buf[i-2] != '$'))
newword;
}
}
done:
if (wlist->wl_word)
pwlist_echo(wlist, "Command>");
return wlist;
}
