/*
* evaluate the dc language, from a FILE* or a string
*
* Copyright (C) 1994, 1997, 1998, 2000, 2003, 2005, 2006, 2008, 2010, 2012-2017
* Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* This is the only module which knows about the dc input language */
#include "config.h"
#include <stdio.h>
#ifdef HAVE_STRING_H
# include <string.h> /* memchr */
#else
# ifdef HAVE_MEMORY_H
# include <memory.h> /* memchr, maybe */
# else
# ifdef HAVE_STRINGS_H
# include <strings.h> /* memchr, maybe */
# endif
#endif
#endif
#include <signal.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include "dc.h"
#include "dc-proto.h"
typedef enum {DC_FALSE, DC_TRUE} dc_boolean;
typedef enum {
DC_OKAY = DC_SUCCESS, /* no further intervention needed for this command */
DC_EATONE, /* caller needs to eat the lookahead char */
DC_EVALREG, /* caller needs to eval the string named by `peekc' */
DC_EVALTOS, /* caller needs to eval the string on top of the stack */
DC_QUIT, /* quit out of unwind_depth levels of evaluation */
DC_INT, /* caller needs to parse a dc_num from input stream */
DC_STR, /* caller needs to parse a dc_str from input stream */
DC_SYSTEM, /* caller needs to run a system() on next input line */
DC_COMMENT, /* caller needs to skip to the next input line */
DC_NEGCMP, /* caller needs to re-call dc_func() with `negcmp' set */
DC_EOF_ERROR /* unexpected end of input; abort current eval */
} dc_status;
static int dc_ibase=10; /* input base, 2 <= dc_ibase <= DC_IBASE_MAX */
static int dc_obase=10; /* output base, 2 <= dc_obase */
static int dc_scale=0; /* scale (see user documentaton) */
/* for Quitting evaluations */
static int unwind_depth=0;
/* for handling SIGINT properly */
static volatile sig_atomic_t interrupt_seen=0;
/* if true, active Quit will not exit program */
static dc_boolean unwind_noexit=DC_FALSE;
/*
* Used to synchronize lookahead on stdin for '?' command.
* If set to EOF then lookahead is used up.
*/
static int stdin_lookahead=EOF;
/* forward reference */
static int evalstr(dc_data *string);
/* input_fil and input_str are passed as arguments to dc_getnum */
/* used by the input_* functions: */
static FILE *input_fil_fp;
static const char *input_str_string;
/* Since we have a need for two characters of pushback, and
* ungetc() only guarantees one, we place the second pushback here
*/
static int input_pushback;
/* passed as an argument to dc_getnum */
static int
input_fil DC_DECLVOID()
{
if (input_pushback != EOF){
int c = input_pushback;
input_pushback = EOF;
return c;
}
return getc(input_fil_fp);
}
/* passed as an argument to dc_getnum */
static int
input_str DC_DECLVOID()
{
if (*input_str_string == '\0')
return EOF;
return *(const unsigned char *)input_str_string++;
}
/* takes a string and evals it; frees the string when done */
/* Wrapper around evalstr to avoid duplicating the free call
* at all possible return points.
*/
static int
dc_eval_and_free_str DC_DECLARG((string))
dc_data *string DC_DECLEND
{
dc_status status;
status = evalstr(string);
if (string->dc_type == DC_STRING)
dc_free_str(&string->v.string);
return status;
}
/* notice when an interrupt event happens */
static void
dc_trap_interrupt DC_DECLARG((signo))
int signo DC_DECLEND
{
signal(signo, dc_trap_interrupt);
interrupt_seen = 1;
}
/* step pointer past next end-of-line (or to end-of-string) */
static const char *
skip_past_eol DC_DECLARG((strptr, strend))
const char *strptr DC_DECLSEP
const char *strend DC_DECLEND
{
const char *p = memchr(strptr, '\n', (size_t)(strend-strptr));
if (p != NULL)
return p+1;
return strend;
}
/* dc_func does the grunt work of figuring out what each input
* character means; used by both dc_evalstr and dc_evalfile
*
* c -> the "current" input character under consideration
* peekc -> the lookahead input character
* negcmp -> negate comparison test (for <,=,> commands)
*/
static dc_status
dc_func DC_DECLARG((c, peekc, negcmp))
int c DC_DECLSEP
int peekc DC_DECLSEP
int negcmp DC_DECLEND
{
dc_data datum;
int tmpint;
switch (c){
case '_': case '.':
case '0': case '1': case '2': case '3':
case '4': case '5': case '6': case '7':
case '8': case '9': case 'A': case 'B':
case 'C': case 'D': case 'E': case 'F':
return DC_INT;
case ' ':
case '\t':
case '\n':
/* standard command separators */
break;
case '+': /* add top two stack elements */
dc_binop(dc_add, dc_scale);
break;
case '-': /* subtract top two stack elements */
dc_binop(dc_sub, dc_scale);
break;
case '*': /* multiply top two stack elements */
dc_binop(dc_mul, dc_scale);
break;
case '/': /* divide top two stack elements */
dc_binop(dc_div, dc_scale);
break;
case '%':
/* take the remainder from division of the top two stack elements */
dc_binop(dc_rem, dc_scale);
break;
case '~':
/* Do division on the top two stack elements. Return the
* quotient as next-to-top of stack and the remainder as
* top-of-stack.
*/
dc_binop2(dc_divrem, dc_scale);
break;
case '|':
/* Consider the top three elements of the stack as (base, exp, mod),
* where mod is top-of-stack, exp is next-to-top, and base is
* second-from-top. Mod must be non-zero, exp must be non-negative,
* and all three must be integers. Push the result of raising
* base to the exp power, reduced modulo mod. If we had base in
* register b, exp in register e, and mod in register m then this
* is conceptually equivalent to "lble^lm%", but it is implemented
* in a more efficient manner, and can handle arbritrarily large
* values for exp.
*/
dc_triop(dc_modexp, dc_scale);
break;
case '^': /* exponientiation of the top two stack elements */
dc_binop(dc_exp, dc_scale);
break;
case '<':
/* eval register named by peekc if
* less-than holds for top two stack elements
*/
if (peekc == EOF)
return DC_EOF_ERROR;
if ( (dc_cmpop() < 0) == (negcmp==0) )
return DC_EVALREG;
return DC_EATONE;
case '=':
/* eval register named by peekc if
* equal-to holds for top two stack elements
*/
if (peekc == EOF)
return DC_EOF_ERROR;
if ( (dc_cmpop() == 0) == (negcmp==0) )
return DC_EVALREG;
return DC_EATONE;
case '>':
/* eval register named by peekc if
* greater-than holds for top two stack elements
*/
if (peekc == EOF)
return DC_EOF_ERROR;
if ( (dc_cmpop() > 0) == (negcmp==0) )
return DC_EVALREG;
return DC_EATONE;
case '?': /* read a line from standard-input and eval it */
if (stdin_lookahead != EOF){
ungetc(stdin_lookahead, stdin);
stdin_lookahead = EOF;
}
datum = dc_readstring(stdin, '\n', '\n');
if (ferror(stdin))
return DC_EOF_ERROR;
dc_push(datum);
return DC_EVALTOS;
case '[': /* read to balancing ']' into a dc_str */
return DC_STR;
case '!': /* read to newline and call system() on resulting string */
if (peekc == '<' || peekc == '=' || peekc == '>')
return DC_NEGCMP;
return DC_SYSTEM;
case '#': /* comment; skip remainder of current line */
return DC_COMMENT;
case 'a': /* Convert top of stack to an ascii character. */
if (dc_pop(&datum) == DC_SUCCESS){
char tmps;
if (datum.dc_type == DC_NUMBER){
tmps = (char) dc_num2int(datum.v.number, DC_TOSS);
}else if (datum.dc_type == DC_STRING){
tmps = *dc_str2charp(datum.v.string);
dc_free_str(&datum.v.string);
}else{
dc_garbage("at top of stack", -1);
}
dc_push(dc_makestring(&tmps, 1));
}
break;
case 'c': /* clear whole stack */
dc_clear_stack();
break;
case 'd': /* duplicate the datum on the top of stack */
if (dc_top_of_stack(&datum) == DC_SUCCESS)
dc_push(dc_dup(datum));
break;
case 'f': /* print list of all stack items */
dc_printall(dc_obase);
break;
case 'i': /* set input base to value on top of stack */
if (dc_pop(&datum) == DC_SUCCESS){
tmpint = 0;
if (datum.dc_type == DC_NUMBER)
tmpint = dc_num2int(datum.v.number, DC_TOSS);
if (2 <= tmpint && tmpint <= DC_IBASE_MAX)
dc_ibase = tmpint;
else
fprintf(stderr,
"%s: input base must be a number \
between 2 and %d (inclusive)\n",
progname, DC_IBASE_MAX);
}
break;
case 'k': /* set scale to value on top of stack */
if (dc_pop(&datum) == DC_SUCCESS){
tmpint = -1;
if (datum.dc_type == DC_NUMBER)
tmpint = dc_num2int(datum.v.number, DC_TOSS);
if ( ! (tmpint >= 0) )
fprintf(stderr,
"%s: scale must be a nonnegative number\n",
progname);
else
dc_scale = tmpint;
}
break;
case 'l': /* "load" -- push value on top of register stack named
* by peekc onto top of evaluation stack; does not
* modify the register stack
*/
if (peekc == EOF)
return DC_EOF_ERROR;
if (dc_register_get(peekc, &datum) == DC_SUCCESS)
dc_push(datum);
return DC_EATONE;
case 'n': /* print the value popped off of top-of-stack;
* do not add a trailing newline
*/
if (dc_pop(&datum) == DC_SUCCESS)
dc_print(datum, dc_obase, DC_NONL, DC_TOSS);
break;
case 'o': /* set output base to value on top of stack */
if (dc_pop(&datum) == DC_SUCCESS){
tmpint = 0;
if (datum.dc_type == DC_NUMBER)
tmpint = dc_num2int(datum.v.number, DC_TOSS);
if ( ! (tmpint > 1) )
fprintf(stderr,
"%s: output base must be a number greater than 1\n",
progname);
else
dc_obase = tmpint;
}
break;
case 'p': /* print the datum on the top of stack,
* with a trailing newline
*/
if (dc_top_of_stack(&datum) == DC_SUCCESS)
dc_print(datum, dc_obase, DC_WITHNL, DC_KEEP);
break;
case 'q': /* quit two levels of evaluation, posibly exiting program */
unwind_depth = 1; /* the return below is the first level of returns */
unwind_noexit = DC_FALSE;
return DC_QUIT;
case 'r': /* rotate (swap) the top two elements on the stack */
dc_stack_rotate(2);
break;
case 's': /* "store" -- replace top of register stack named
* by peekc with the value popped from the top
* of the evaluation stack
*/
if (peekc == EOF)
return DC_EOF_ERROR;
if (dc_pop(&datum) == DC_SUCCESS)
dc_register_set(peekc, datum);
return DC_EATONE;
case 'v': /* replace top of stack with its square root */
if (dc_pop(&datum) == DC_SUCCESS){
dc_num tmpnum;
if (datum.dc_type != DC_NUMBER){
fprintf(stderr,
"%s: square root of nonnumeric attempted\n",
progname);
}else if (dc_sqrt(datum.v.number, dc_scale, &tmpnum) == DC_SUCCESS){
dc_free_num(&datum.v.number);
datum.v.number = tmpnum;
dc_push(datum);
}
}
break;
case 'x': /* eval the datum popped from top of stack */
return DC_EVALTOS;
case 'z': /* push the current stack depth onto the top of stack */
dc_push(dc_int2data(dc_tell_stackdepth()));
break;
case 'I': /* push the current input base onto the stack */
dc_push(dc_int2data(dc_ibase));
break;
case 'K': /* push the current scale onto the stack */
dc_push(dc_int2data(dc_scale));
break;
case 'L': /* pop a value off of register stack named by peekc
* and push it onto the evaluation stack
*/
if (peekc == EOF)
return DC_EOF_ERROR;
if (dc_register_pop(peekc, &datum) == DC_SUCCESS)
dc_push(datum);
return DC_EATONE;
case 'O': /* push the current output base onto the stack */
dc_push(dc_int2data(dc_obase));
break;
case 'P':
/* Pop the value off the top of a stack. If it is
* a number, dump out the integer portion of its
* absolute value as a "base UCHAR_MAX+1" byte stream;
* if it is a string, just print it.
* In either case, do not append a trailing newline.
*/
if (dc_pop(&datum) == DC_SUCCESS){
if (datum.dc_type == DC_NUMBER)
dc_dump_num(datum.v.number, DC_TOSS);
else if (datum.dc_type == DC_STRING)
dc_out_str(datum.v.string, DC_TOSS);
else
dc_garbage("at top of stack", -1);
}
fflush(stdout);
break;
case 'Q': /* quit out of top-of-stack nested evals;
* pops value from stack;
* does not exit program (stops short if necessary)
*/
if (dc_pop(&datum) == DC_SUCCESS){
unwind_depth = 0;
unwind_noexit = DC_TRUE;
if (datum.dc_type == DC_NUMBER)
unwind_depth = dc_num2int(datum.v.number, DC_TOSS);
if (unwind_depth-- > 0)
return DC_QUIT;
unwind_depth = 0; /* paranoia */
fprintf(stderr,
"%s: Q command requires a number >= 1\n",
progname);
}
break;
case 'R': /* pop a value off of the evaluation stack,;
* rotate the top remaining stack elements that many
* places forward (negative numbers mean rotate
* backward).
*/
if (dc_pop(&datum) == DC_SUCCESS){
tmpint = 0;
if (datum.dc_type == DC_NUMBER)
tmpint = dc_num2int(datum.v.number, DC_TOSS);
dc_stack_rotate(tmpint);
}
break;
case 'S': /* pop a value off of the evaluation stack
* and push it onto the register stack named by peekc
*/
if (peekc == EOF)
return DC_EOF_ERROR;
if (dc_pop(&datum) == DC_SUCCESS)
dc_register_push(peekc, datum);
return DC_EATONE;
case 'X': /* replace the number on top-of-stack with its scale factor */
if (dc_pop(&datum) == DC_SUCCESS){
tmpint = 0;
if (datum.dc_type == DC_NUMBER)
tmpint = dc_tell_scale(datum.v.number, DC_TOSS);
dc_push(dc_int2data(tmpint));
}
break;
case 'Z': /* replace the datum on the top-of-stack with its length */
if (dc_pop(&datum) == DC_SUCCESS)
dc_push(dc_int2data(dc_tell_length(datum, DC_TOSS)));
break;
case ':': /* store into array */
if (peekc == EOF)
return DC_EOF_ERROR;
if (dc_pop(&datum) == DC_SUCCESS){
tmpint = -1;
if (datum.dc_type == DC_NUMBER)
tmpint = dc_num2int(datum.v.number, DC_TOSS);
if (dc_pop(&datum) == DC_SUCCESS){
if (tmpint < 0)
fprintf(stderr,
"%s: array index must be a nonnegative integer\n",
progname);
else
dc_array_set(peekc, tmpint, datum);
}
}
return DC_EATONE;
case ';': /* retreive from array */
if (peekc == EOF)
return DC_EOF_ERROR;
if (dc_pop(&datum) == DC_SUCCESS){
tmpint = -1;
if (datum.dc_type == DC_NUMBER)
tmpint = dc_num2int(datum.v.number, DC_TOSS);
if (tmpint < 0)
fprintf(stderr,
"%s: array index must be a nonnegative integer\n",
progname);
else
dc_push(dc_array_get(peekc, tmpint));
}
return DC_EATONE;
default: /* What did that user mean? */
fprintf(stderr, "%s: ", progname);
dc_show_id(stdout, c, " unimplemented\n");
break;
}
return DC_OKAY;
}
/* takes a string and evals it */
static int
evalstr DC_DECLARG((string))
dc_data *string DC_DECLEND
{
const char *s;
const char *end;
const char *p;
size_t len;
int c;
int peekc;
int count;
int negcmp;
int next_negcmp = 0;
int tail_depth = 1; /* how much tail recursion is active */
dc_data evalstr;
if (string->dc_type != DC_STRING){
fprintf(stderr,
"%s: eval called with non-string argument\n",
progname);
return DC_OKAY;
}
interrupt_seen = 0;
s = dc_str2charp(string->v.string);
end = s + dc_strlen(string->v.string);
while (s < end && interrupt_seen==0){
c = *(const unsigned char *)s++;
peekc = EOF;
if (s < end)
peekc = *(const unsigned char *)s;
negcmp = next_negcmp;
next_negcmp = 0;
switch (dc_func(c, peekc, negcmp)){
case DC_OKAY:
break;
case DC_EATONE:
if (peekc != EOF)
++s;
break;
case DC_EVALREG:
/*commands which return this guarantee that peekc!=EOF*/
++s;
if (dc_register_get(peekc, &evalstr) != DC_SUCCESS)
break;
dc_push(evalstr);
/*@fallthrough@*/
case DC_EVALTOS:
/*skip trailing whitespace to assist tail-recursion detection*/
while (s<end && (*s==' '||*s=='\t'||*s=='\n'||*s=='#')){
if (*s++ == '#')
s = skip_past_eol(s, end);
}
if (dc_pop(&evalstr) == DC_SUCCESS){
if (evalstr.dc_type == DC_NUMBER){
dc_push(evalstr);
}else if (evalstr.dc_type != DC_STRING){
dc_garbage("at top of stack", -1);
}else if (s == end){
/*handle tail recursion*/
dc_free_str(&string->v.string);
*string = evalstr;
s = dc_str2charp(string->v.string);
end = s + dc_strlen(string->v.string);
++tail_depth;
}else if (dc_eval_and_free_str(&evalstr) == DC_QUIT){
if (unwind_depth > 0){
--unwind_depth;
return DC_QUIT;
}
return DC_OKAY;
}
}
break;
case DC_QUIT:
if (unwind_depth >= tail_depth){
unwind_depth -= tail_depth;
return DC_QUIT;
}
/*adjust tail recursion accounting and continue*/
tail_depth -= unwind_depth;
break;
case DC_INT:
input_str_string = s - 1;
dc_push(dc_getnum(input_str, dc_ibase, &peekc));
s = input_str_string;
if (peekc != EOF)
--s;
break;
case DC_STR:
count = 1;
for (p=s; p<end && count>0; ++p)
if (*p == ']')
--count;
else if (*p == '[')
++count;
len = (size_t) (p - s);
dc_push(dc_makestring(s, (count==0 ? len-1 : len)));
s = p;
break;
case DC_SYSTEM:
s = dc_system(s);
break;
case DC_COMMENT:
s = skip_past_eol(s, end);
break;
case DC_NEGCMP:
next_negcmp = 1;
break;
case DC_EOF_ERROR:
if (ferror(stdin)) {
fprintf(stderr, "%s: ", progname);
perror("error reading stdin");
return DC_FAIL;
}
fprintf(stderr, "%s: unexpected EOS\n", progname);
return DC_OKAY;
}
}
return DC_OKAY;
}
/* wrapper around evalstr, to handle top-level QUIT requests correctly*/
int
dc_evalstr(dc_data *string)
{
switch (evalstr(string)) {
case DC_OKAY:
return DC_SUCCESS;
case DC_QUIT:
if (unwind_noexit != DC_TRUE)
return DC_FAIL;
return DC_SUCCESS;
default:
return DC_FAIL;
}
}
/* This is the main function of the whole DC program.
* Reads the file described by fp, calls dc_func to do
* the dirty work, and takes care of dc_func's shortcomings.
*/
int
dc_evalfile DC_DECLARG((fp))
FILE *fp DC_DECLEND
{
int c;
int peekc;
int negcmp;
int next_negcmp = 0;
typedef void (*handler_t)(int);
handler_t sigint_handler = dc_trap_interrupt;
handler_t sigint_default = signal(SIGINT, SIG_IGN);
dc_data datum;
/* Signals are awkward: we want to allow interactive users
* to break out of long running macros, but otherwise we
* prefer that SIGINT not be given any special treatment.
* Sometimes "no special treatment" means to continue to
* *ignore* the signal, but usually it means to kill the program.
*/
signal(SIGINT, sigint_default);
#ifdef HAVE_UNISTD_H
/* don't trap SIGINT if we can tell that we are not reading from a tty */
if ( ! isatty(fileno(fp)) )
sigint_handler = sigint_default;
#endif
stdin_lookahead = EOF;
for (c=getc(fp); c!=EOF; c=peekc){
peekc = getc(fp);
/*
* The following if() is the only place where ``stdin_lookahead''
* might be set to other than EOF:
*/
if (fp == stdin)
stdin_lookahead = peekc;
/*
* In the switch(), cases which naturally update peekc
* (unconditionally) do not have to update or reference
* stdin_lookahead; other functions use the predicate:
* stdin_lookahead != peekc && fp == stdin
* to recognize the case where:
* a) stdin_lookahead == EOF (stdin and peekc are not in sync)
* b) peekc != EOF (resync is possible)
* c) fp == stdin (resync is relevant)
* The whole stdin_lookahead complication arises because the
* '?' command may be invoked from an arbritrarily deeply
* nested dc_evalstr(), '?' reads exclusively from stdin,
* and this winds up making peekc invalid when fp==stdin.
*/
negcmp = next_negcmp;
next_negcmp = 0;
signal(SIGINT, sigint_handler);
switch (dc_func(c, peekc, negcmp)){
case DC_OKAY:
if (stdin_lookahead != peekc && fp == stdin)
peekc = getc(fp);
break;
case DC_EATONE:
peekc = getc(fp);
break;
case DC_EVALREG:
/*commands which send us here shall guarantee that peekc!=EOF*/
c = peekc;
peekc = getc(fp);
stdin_lookahead = peekc;
if (dc_register_get(c, &datum) != DC_SUCCESS)
break;
dc_push(datum);
/*@fallthrough@*/
case DC_EVALTOS:
if (stdin_lookahead != peekc && fp == stdin)
peekc = getc(fp);
if (dc_pop(&datum) == DC_SUCCESS){
if (datum.dc_type == DC_NUMBER){
dc_push(datum);
}else if (datum.dc_type == DC_STRING){
if (dc_eval_and_free_str(&datum) == DC_QUIT){
if (unwind_noexit != DC_TRUE)
goto reset_and_exit_quit;
fprintf(stderr, "%s: Q command argument exceeded \
string execution depth\n", progname);
}
}else{
dc_garbage("at top of stack", -1);
}
}
break;
case DC_QUIT:
if (unwind_noexit != DC_TRUE)
goto reset_and_exit_quit;
fprintf(stderr,
"%s: Q command argument exceeded string execution depth\n",
progname);
if (stdin_lookahead != peekc && fp == stdin)
peekc = getc(fp);
break;
case DC_INT:
input_fil_fp = fp;
input_pushback = c;
ungetc(peekc, fp);
dc_push(dc_getnum(input_fil, dc_ibase, &peekc));
if (ferror(fp))
goto error_fail;
break;
case DC_STR:
ungetc(peekc, fp);
datum = dc_readstring(fp, '[', ']');
if (ferror(fp))
goto error_fail;
dc_push(datum);
peekc = getc(fp);
break;
case DC_SYSTEM:
ungetc(peekc, fp);
datum = dc_readstring(fp, '\n', '\n');
if (ferror(fp))
goto error_fail;
(void)dc_system(dc_str2charp(datum.v.string));
dc_free_str(&datum.v.string);
peekc = getc(fp);
break;
case DC_COMMENT:
while (peekc!=EOF && peekc!='\n')
peekc = getc(fp);
if (peekc != EOF)
peekc = getc(fp);
break;
case DC_NEGCMP:
next_negcmp = 1;
break;
case DC_EOF_ERROR:
if (ferror(fp))
goto error_fail;
fprintf(stderr, "%s: unexpected EOF\n", progname);
goto reset_and_exit_fail;
}
if (interrupt_seen)
fprintf(stderr, "\nInterrupt!\n");
interrupt_seen = 0;
signal(SIGINT, sigint_default);
}
if (!ferror(fp))
goto reset_and_exit_success;
error_fail:
fprintf(stderr, "%s: ", progname);
perror("error reading input");
return DC_FAIL;
reset_and_exit_quit:
reset_and_exit_fail:
signal(SIGINT, sigint_default);
return DC_FAIL;
reset_and_exit_success:
signal(SIGINT, sigint_default);
return DC_SUCCESS;
}
/*
* Local Variables:
* mode: C
* tab-width: 4
* End:
* vi: set ts=4 :
*/