/*
* print a command tree
*/
static void
ptree(struct op *t, int indent, struct shf *shf)
{
const char **w;
struct ioword **ioact;
struct op *t1;
int i;
Chain:
if (t == NULL)
return;
switch (t->type) {
case TCOM:
prevent_semicolon = false;
/*
* special-case 'var=<<EOF' (rough; see
* exec.c:execute() for full code)
*/
if (
/* we have zero arguments, i.e. no programme to run */
t->args[0] == NULL &&
/* we have exactly one variable assignment */
t->vars[0] != NULL && t->vars[1] == NULL &&
/* we have exactly one I/O redirection */
t->ioact != NULL && t->ioact[0] != NULL &&
t->ioact[1] == NULL &&
/* of type "here document" (or "here string") */
(t->ioact[0]->flag & IOTYPE) == IOHERE) {
fptreef(shf, indent, "%S", t->vars[0]);
break;
}
if (t->vars) {
w = (const char **)t->vars;
while (*w)
fptreef(shf, indent, "%S ", *w++);
} else
shf_puts("#no-vars# ", shf);
if (t->args) {
w = t->args;
while (*w)
fptreef(shf, indent, "%S ", *w++);
} else
shf_puts("#no-args# ", shf);
break;
case TEXEC:
t = t->left;
goto Chain;
case TPAREN:
fptreef(shf, indent + 2, "( %T) ", t->left);
break;
case TPIPE:
fptreef(shf, indent, "%T| ", t->left);
t = t->right;
goto Chain;
case TLIST:
fptreef(shf, indent, "%T%;", t->left);
t = t->right;
goto Chain;
case TOR:
case TAND:
fptreef(shf, indent, "%T%s %T",
t->left, (t->type == TOR) ? "||" : "&&", t->right);
break;
case TBANG:
shf_puts("! ", shf);
prevent_semicolon = false;
t = t->right;
goto Chain;
case TDBRACKET:
w = t->args;
shf_puts("[[", shf);
while (*w)
fptreef(shf, indent, " %S", *w++);
shf_puts(" ]] ", shf);
break;
case TSELECT:
case TFOR:
fptreef(shf, indent, "%s %s ",
(t->type == TFOR) ? "for" : Tselect, t->str);
if (t->vars != NULL) {
shf_puts("in ", shf);
w = (const char **)t->vars;
while (*w)
fptreef(shf, indent, "%S ", *w++);
fptreef(shf, indent, "%;");
}
fptreef(shf, indent + INDENT, "do%N%T", t->left);
fptreef(shf, indent, "%;done ");
break;
case TCASE:
fptreef(shf, indent, "case %S in", t->str);
for (t1 = t->left; t1 != NULL; t1 = t1->right) {
fptreef(shf, indent, "%N(");
w = (const char **)t1->vars;
while (*w) {
fptreef(shf, indent, "%S%c", *w,
(w[1] != NULL) ? '|' : ')');
++w;
}
fptreef(shf, indent + INDENT, "%N%T%N;%c", t1->left,
t1->u.charflag);
}
fptreef(shf, indent, "%Nesac ");
break;
#ifdef DEBUG
case TELIF:
internal_errorf("TELIF in tree.c:ptree() unexpected");
/* FALLTHROUGH */
#endif
case TIF:
i = 2;
t1 = t;
goto process_TIF;
do {
t1 = t1->right;
i = 0;
fptreef(shf, indent, "%;");
process_TIF:
/* 5 == strlen("elif ") */
fptreef(shf, indent + 5 - i, Telif_pT + i, t1->left);
t1 = t1->right;
if (t1->left != NULL) {
fptreef(shf, indent, "%;");
fptreef(shf, indent + INDENT, "%s%N%T",
"then", t1->left);
}
} while (t1->right && t1->right->type == TELIF);
if (t1->right != NULL) {
fptreef(shf, indent, "%;");
fptreef(shf, indent + INDENT, "%s%N%T",
"else", t1->right);
}
fptreef(shf, indent, "%;fi ");
break;
case TWHILE:
case TUNTIL:
/* 6 == strlen("while "/"until ") */
fptreef(shf, indent + 6, "%s %T",
(t->type == TWHILE) ? "while" : "until",
t->left);
fptreef(shf, indent, "%;");
fptreef(shf, indent + INDENT, "do%N%T", t->right);
fptreef(shf, indent, "%;done ");
break;
case TBRACE:
fptreef(shf, indent + INDENT, "{%N%T", t->left);
fptreef(shf, indent, "%;} ");
break;
case TCOPROC:
fptreef(shf, indent, "%T|& ", t->left);
prevent_semicolon = true;
break;
case TASYNC:
fptreef(shf, indent, "%T& ", t->left);
prevent_semicolon = true;
break;
case TFUNCT:
fpFUNCTf(shf, indent, tobool(t->u.ksh_func), t->str, t->left);
break;
case TTIME:
fptreef(shf, indent, "%s %T", "time", t->left);
break;
default:
shf_puts("<botch>", shf);
prevent_semicolon = false;
break;
}
if ((ioact = t->ioact) != NULL) {
bool need_nl = false;
while (*ioact != NULL)
pioact(shf, *ioact++);
/* Print here documents after everything else... */
ioact = t->ioact;
while (*ioact != NULL) {
struct ioword *iop = *ioact++;
/* heredoc is NULL when tracing (set -x) */
if ((iop->flag & (IOTYPE | IOHERESTR)) == IOHERE &&
iop->heredoc) {
shf_putc('\n', shf);
shf_puts(iop->heredoc, shf);
fptreef(shf, indent, "%s",
iop->flag & IONDELIM ? "<<" :
evalstr(iop->delim, 0));
need_nl = true;
}
}
/*
* Last delimiter must be followed by a newline (this
* often leads to an extra blank line, but it's not
* worth worrying about)
*/
if (need_nl) {
shf_putc('\n', shf);
prevent_semicolon = true;
}
}
}
/*
* print a command tree
*/
static void
ptree(struct op *t, int indent, struct shf *shf)
{
const char **w;
struct ioword **ioact;
struct op *t1;
int i;
const char *ccp;
Chain:
if (t == NULL)
return;
switch (t->type) {
case TCOM:
prevent_semicolon = false;
/* special-case 'var=<<EOF' (cf. exec.c:execute) */
if (t->args &&
/* we have zero arguments, i.e. no program to run */
t->args[0] == NULL &&
/* we have exactly one variable assignment */
t->vars[0] != NULL && t->vars[1] == NULL &&
/* we have exactly one I/O redirection */
t->ioact != NULL && t->ioact[0] != NULL &&
t->ioact[1] == NULL &&
/* of type "here document" (or "here string") */
(t->ioact[0]->ioflag & IOTYPE) == IOHERE &&
/* the variable assignment begins with a valid varname */
(ccp = skip_wdvarname(t->vars[0], true)) != t->vars[0] &&
/* and has no right-hand side (i.e. "varname=") */
ccp[0] == CHAR && ((ccp[1] == '=' && ccp[2] == EOS) ||
/* or "varname+=" */ (ccp[1] == '+' && ccp[2] == CHAR &&
ccp[3] == '=' && ccp[4] == EOS))) {
fptreef(shf, indent, Tf_S, t->vars[0]);
break;
}
if (t->vars) {
w = (const char **)t->vars;
while (*w)
fptreef(shf, indent, Tf_S_, *w++);
} else
shf_puts("#no-vars# ", shf);
if (t->args) {
w = t->args;
if (*w && **w == CHAR) {
char *cp = wdstrip(*w++, WDS_TPUTS);
if (valid_alias_name(cp))
shf_putc('\\', shf);
shf_puts(cp, shf);
shf_putc(' ', shf);
afree(cp, ATEMP);
}
while (*w)
fptreef(shf, indent, Tf_S_, *w++);
} else
shf_puts("#no-args# ", shf);
break;
case TEXEC:
t = t->left;
goto Chain;
case TPAREN:
fptreef(shf, indent + 2, "( %T) ", t->left);
break;
case TPIPE:
fptreef(shf, indent, "%T| ", t->left);
t = t->right;
goto Chain;
case TLIST:
fptreef(shf, indent, "%T%;", t->left);
t = t->right;
goto Chain;
case TOR:
case TAND:
fptreef(shf, indent, "%T%s %T",
t->left, (t->type == TOR) ? "||" : "&&", t->right);
break;
case TBANG:
shf_puts("! ", shf);
prevent_semicolon = false;
t = t->right;
goto Chain;
case TDBRACKET:
w = t->args;
shf_puts("[[", shf);
while (*w)
fptreef(shf, indent, Tf__S, *w++);
shf_puts(" ]] ", shf);
break;
case TSELECT:
case TFOR:
fptreef(shf, indent, "%s %s ",
(t->type == TFOR) ? "for" : Tselect, t->str);
if (t->vars != NULL) {
shf_puts("in ", shf);
w = (const char **)t->vars;
while (*w)
fptreef(shf, indent, Tf_S_, *w++);
fptreef(shf, indent, Tft_end);
}
fptreef(shf, indent + INDENT, "do%N%T", t->left);
fptreef(shf, indent, "%;done ");
break;
case TCASE:
fptreef(shf, indent, "case %S in", t->str);
for (t1 = t->left; t1 != NULL; t1 = t1->right) {
fptreef(shf, indent, "%N(");
w = (const char **)t1->vars;
while (*w) {
fptreef(shf, indent, "%S%c", *w,
(w[1] != NULL) ? '|' : ')');
++w;
}
fptreef(shf, indent + INDENT, "%N%T%N;%c", t1->left,
t1->u.charflag);
}
fptreef(shf, indent, "%Nesac ");
break;
case TELIF:
internal_errorf(TELIF_unexpected);
/* FALLTHROUGH */
case TIF:
i = 2;
t1 = t;
goto process_TIF;
do {
t1 = t1->right;
i = 0;
fptreef(shf, indent, Tft_end);
process_TIF:
/* 5 == strlen("elif ") */
fptreef(shf, indent + 5 - i, Telif_pT + i, t1->left);
t1 = t1->right;
if (t1->left != NULL) {
fptreef(shf, indent, Tft_end);
fptreef(shf, indent + INDENT, "%s%N%T",
"then", t1->left);
}
} while (t1->right && t1->right->type == TELIF);
if (t1->right != NULL) {
fptreef(shf, indent, Tft_end);
fptreef(shf, indent + INDENT, "%s%N%T",
"else", t1->right);
}
fptreef(shf, indent, "%;fi ");
break;
case TWHILE:
case TUNTIL:
/* 6 == strlen("while "/"until ") */
fptreef(shf, indent + 6, Tf_s_T,
(t->type == TWHILE) ? "while" : "until",
t->left);
fptreef(shf, indent, Tft_end);
fptreef(shf, indent + INDENT, "do%N%T", t->right);
fptreef(shf, indent, "%;done ");
break;
case TBRACE:
fptreef(shf, indent + INDENT, "{%N%T", t->left);
fptreef(shf, indent, "%;} ");
break;
case TCOPROC:
fptreef(shf, indent, "%T|& ", t->left);
prevent_semicolon = true;
break;
case TASYNC:
fptreef(shf, indent, "%T& ", t->left);
prevent_semicolon = true;
break;
case TFUNCT:
fpFUNCTf(shf, indent, tobool(t->u.ksh_func), t->str, t->left);
break;
case TTIME:
fptreef(shf, indent, Tf_s_T, Ttime, t->left);
break;
default:
shf_puts("<botch>", shf);
prevent_semicolon = false;
break;
}
if ((ioact = t->ioact) != NULL) {
bool need_nl = false;
while (*ioact != NULL)
pioact(shf, *ioact++);
/* Print here documents after everything else... */
ioact = t->ioact;
while (*ioact != NULL) {
struct ioword *iop = *ioact++;
/* heredoc is NULL when tracing (set -x) */
if ((iop->ioflag & (IOTYPE | IOHERESTR)) == IOHERE &&
iop->heredoc) {
shf_putc('\n', shf);
shf_puts(iop->heredoc, shf);
fptreef(shf, indent, Tf_s,
evalstr(iop->delim, 0));
need_nl = true;
}
}
/*
* Last delimiter must be followed by a newline (this
* often leads to an extra blank line, but it's not
* worth worrying about)
*/
if (need_nl) {
shf_putc('\n', shf);
prevent_semicolon = true;
}
}
}
