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/* $Id: args.c,v 1.12 2006/01/19 22:31:10 erg Exp $ $Revision: 1.12 $ */
/* vim:set shiftwidth=4 ts=8: */
/**********************************************************
* This software is part of the graphviz package *
* http://www.graphviz.org/ *
* *
* Copyright (c) 1994-2004 AT&T Corp. *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Corp. *
* *
* Information and Software Systems Research *
* AT&T Research, Florham Park NJ *
**********************************************************/
/* FIXME
* This is an ugly mess.
*
* Args should be made independent of layout engine and arg values
* should be stored in gvc or gvc->job. All globals should be eliminated.
*
* Needs to be fixed before layout engines can be plugins.
*/
#include "render.h"
#include "tlayout.h"
/* Default layout values, possibly set via command line; -1 indicates unset */
fdpParms_t fdp_parms_default = {
1, /* useGrid */
1, /* useNew */
-1, /* numIters */
50, /* unscaled */
0.0, /* C */
1.0, /* Tfact */
-1.0, /* K - set in initParams; used in init_edge */
-1.0, /* T0 */
};
static int
neato_extra_args(GVC_t *gvc, int argc, char** argv)
{
char** p = argv+1;
int i;
char* arg;
int cnt = 1;
for (i = 1; i < argc; i++) {
arg = argv[i];
if (arg && *arg == '-') {
switch (arg[1]) {
case 'x' : Reduce = TRUE; break;
case 'n':
if (arg[2]) {
Nop = atoi(arg+2);
if (Nop <= 0) {
fprintf (stderr, "Invalid parameter \"%s\" for -n flag\n", arg+2);
dotneato_usage (1);
}
}
else Nop = 1;
break;
default :
cnt++;
if (*p != arg) *p = arg;
p++;
break;
}
}
else {
cnt++;
if (*p != arg) *p = arg;
p++;
}
}
*p = 0;
return cnt;
}
static int
memtest_extra_args(GVC_t *gvc, int argc, char** argv)
{
char** p = argv+1;
int i;
char* arg;
int cnt = 1;
for (i = 1; i < argc; i++) {
arg = argv[i];
if (arg && *arg == '-') {
switch (arg[1]) {
case 'm' : MemTest = TRUE; break;
default :
cnt++;
if (*p != arg) *p = arg;
p++;
break;
}
}
else {
cnt++;
if (*p != arg) *p = arg;
p++;
}
}
*p = 0;
return cnt;
}
static int
config_extra_args(GVC_t *gvc, int argc, char** argv)
{
char** p = argv+1;
int i;
char* arg;
int cnt = 1;
for (i = 1; i < argc; i++) {
arg = argv[i];
if (arg && *arg == '-') {
switch (arg[1]) {
case 'c' : Config = TRUE; break;
default :
cnt++;
if (*p != arg) *p = arg;
p++;
break;
}
}
else {
cnt++;
if (*p != arg) *p = arg;
p++;
}
}
*p = 0;
return cnt;
}
/* setDouble:
* If arg is an double, value is stored in v
* and functions returns 0; otherwise, returns 1.
*/
static int
setDouble (double* v, char* arg)
{
char* p;
double d;
d = strtod(arg,&p);
if (p == arg) {
agerr (AGERR, "bad value in flag -L%s - ignored\n", arg-1);
return 1;
}
*v = d;
return 0;
}
/* setInt:
* If arg is an integer, value is stored in v
* and functions returns 0; otherwise, returns 1.
*/
static int
setInt (int* v, char* arg)
{
char* p;
int i;
i = (int)strtol(arg,&p,10);
if (p == arg) {
agerr (AGERR, "bad value in flag -L%s - ignored\n", arg-1);
return 1;
}
*v = i;
return 0;
}
/* setAttr:
* Actions for fdp specific flags
*/
static int
setAttr (char* arg)
{
switch (*arg++) {
case 'g' :
fdp_parms.useGrid = 0;
break;
case 'O' :
fdp_parms.useNew = 0;
break;
case 'n' :
if (setInt (&fdp_parms.numIters, arg)) return 1;
break;
case 'U' :
if (setInt (&fdp_parms.unscaled, arg)) return 1;
break;
case 'C' :
if (setDouble (&fdp_parms.C, arg)) return 1;
break;
case 'T' :
if (*arg == '*') {
if (setDouble (&fdp_parms.Tfact, arg+1)) return 1;
}
else {
if (setDouble (&fdp_parms.T0, arg)) return 1;
}
break;
default :
agerr (AGWARN, "unknown flag -L%s - ignored\n", arg-1);
break;
}
return 0;
}
/* fdp_extra_args:
* Handle fdp specific arguments.
* These have the form -L<name>=<value>.
*/
static int
fdp_extra_args (GVC_t *gvc, int argc, char** argv)
{
char** p = argv+1;
int i;
char* arg;
int cnt = 1;
fdp_parms = fdp_parms_default;
for (i = 1; i < argc; i++) {
arg = argv[i];
if (arg && (*arg == '-') && (*(arg+1) == 'L')) {
if (setAttr (arg+2)) dotneato_usage(1);
}
else {
cnt++;
if (*p != arg) *p = arg;
p++;
}
}
*p = 0;
return cnt;
}
int gvParseArgs(GVC_t *gvc, int argc, char** argv)
{
argc = neato_extra_args(gvc, argc, argv);
argc = fdp_extra_args(gvc, argc, argv);
argc = memtest_extra_args(gvc, argc, argv);
argc = config_extra_args(gvc, argc, argv);
dotneato_args_initialize(gvc, argc, argv);
if (Verbose)
gvplugin_write_status(gvc);
return 0;
}
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