gnetlist-legacy/src/s_netattrib.c

   1 /* gEDA - GPL Electronic Design Automation
   2  * gnetlist - gEDA Netlist
   3  * Copyright (C) 1998-2010 Ales Hvezda
   4  * Copyright (C) 1998-2020 gEDA Contributors (see ChangeLog for details)
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include <config.h>
  22
  23 #include <stdio.h>
  24 #include <ctype.h>
  25 #ifdef HAVE_STDLIB_H
  26 #include <stdlib.h>
  27 #endif
  28 #ifdef HAVE_ASSERT_H
  29 #include <assert.h>
  30 #endif
  31 #ifdef HAVE_STRING_H
  32 #include <string.h>
  33 #endif
  34
  35 #include <libgeda/libgeda.h>
  36
  37 #include "../include/globals.h"
  38 #include "../include/prototype.h"
  39 #include "../include/gettext.h"
  40
  41 /* Used by the connected string functions */
  42 #define PIN_NET_PREFIX "__netattrib_power_pin "
  43
  44 /* used by the extract functions below */
  45 #define DELIMITERS ",; "
  46
  47 gchar *
  48 s_netattrib_pinnum_get_connected_string (const gchar *pinnum)
  49 {
  50   gchar *str = g_strdup_printf (PIN_NET_PREFIX "%s", pinnum);
  51   return str;
  52 }
  53
  54 const gchar *
  55 s_netattrib_connected_string_get_pinnum (const gchar *str)
  56 {
  57   int prefix_len = (sizeof PIN_NET_PREFIX) - 1;
  58
  59   if (strncmp (str, PIN_NET_PREFIX, prefix_len) != 0) {
  60     return NULL;
  61   }
  62
  63   return str + prefix_len;
  64 }
  65
  66 void
  67 s_netattrib_check_connected_string (const gchar *str)
  68 {
  69   if (s_netattrib_connected_string_get_pinnum (str) == NULL) return;
  70
  71   fprintf (stderr,
  72            _("ERROR: `%s' is reserved for internal use."), PIN_NET_PREFIX);
  73   exit (1); /*! \bug Use appropriate exit code */
  74 }
  75
  76 /* things to do here : */
  77 /* write the net alias function */
  78
  79 /* be sure to g_free returned string */
  80 char *s_netattrib_extract_netname(char *value)
  81 {
  82     char *return_value = NULL;
  83     int i = 0;
  84
  85     /* a bit larger than needed ... */
  86     return_value = g_strdup (value);
  87
  88     while (value[i] != ':' && value[i] != '\0') {
  89         return_value[i] = value[i];
  90         i++;
  91     }
  92
  93     if (value[i] != ':') {
  94         fprintf(stderr, _("Found malformed net attribute\n"));
  95         return (g_strdup ("unknown"));
  96     }
  97
  98     return_value[i] = '\0';
  99
 100     return (return_value);
 101
 102 }
 103
 104 /* if this function creates a cpinlist list, it will not have a head node */
 105 void
 106 s_netattrib_create_pins(TOPLEVEL * pr_current, OBJECT * o_current,
 107                         NETLIST * netlist, char *value,
 108                         char *hierarchy_tag)
 109 {
 110     NETLIST *netlist_tail = NULL;
 111     CPINLIST *cpinlist_tail = NULL;
 112     CPINLIST *new_cpin = NULL;
 113     CPINLIST *old_cpin = NULL;
 114     char *connected_to = NULL;
 115     char *net_name = NULL;
 116     char *start_of_pinlist = NULL;
 117     char *char_ptr = NULL;
 118     char *current_pin = NULL;
 119
 120
 121     char_ptr = strchr(value, ':');
 122
 123     if (char_ptr == NULL) {
 124         return;
 125     }
 126
 127
 128     net_name = s_netattrib_extract_netname(value);
 129
 130     /* skip over first : */
 131     start_of_pinlist = char_ptr + 1;
 132     current_pin = strtok(start_of_pinlist, DELIMITERS);
 133     while (current_pin) {
 134
 135         netlist_tail = s_netlist_return_tail(netlist);
 136         cpinlist_tail = s_cpinlist_return_tail(netlist_tail->cpins);
 137
 138         if (netlist->component_uref) {
 139
 140             old_cpin =
 141                 s_cpinlist_search_pin(netlist_tail->cpins, current_pin);
 142
 143             if (old_cpin) {
 144
 145                 g_assert (old_cpin->nets != NULL);
 146
 147                 if (old_cpin->nets->net_name) {
 148                     fprintf(stderr,
 149                             _("Found a cpinlist head with a netname! [%s]\n"),
 150                             old_cpin->nets->net_name);
 151                     g_free(old_cpin->nets->net_name);
 152                 }
 153
 154
 155                 old_cpin->nets->net_name =
 156                     s_hierarchy_create_netattrib(pr_current, net_name,
 157                                                  hierarchy_tag);
 158                 old_cpin->nets->net_name_has_priority = TRUE;
 159                 connected_to = g_strdup_printf("%s %s",
 160                                    netlist->component_uref,
 161                                    current_pin);
 162                 old_cpin->nets->connected_to = g_strdup(connected_to);
 163                 old_cpin->nets->nid = o_current->sid;
 164                 g_free(connected_to);
 165             } else {
 166
 167
 168                 new_cpin = s_cpinlist_add(cpinlist_tail);
 169
 170                 new_cpin->pin_number = g_strdup (current_pin);
 171                 new_cpin->net_name = NULL;
 172
 173                 new_cpin->plid = o_current->sid;
 174
 175                 new_cpin->nets = s_net_add(NULL);
 176                 new_cpin->nets->net_name_has_priority = TRUE;
 177                 new_cpin->nets->net_name =
 178                     s_hierarchy_create_netattrib(pr_current, net_name,
 179                                                  hierarchy_tag);
 180
 181                 connected_to = g_strdup_printf("%s %s",
 182                                    netlist->component_uref,
 183                                    current_pin);
 184                 new_cpin->nets->connected_to = g_strdup(connected_to);
 185                 new_cpin->nets->nid = o_current->sid;
 186
 187 #if DEBUG
 188                 printf("Finished creating: %s\n", connected_to);
 189                 printf("netname: %s %s\n", new_cpin->nets->net_name,
 190                        hierarchy_tag);
 191 #endif
 192
 193                 g_free(connected_to);
 194             }
 195
 196         } else {                /* no uref, means this is a special component */
 197
 198         }
 199         current_pin = strtok(NULL, DELIMITERS);
 200     }
 201
 202     g_free(net_name);
 203 }
 204
 205
 206 void
 207 s_netattrib_handle (TOPLEVEL * pr_current, OBJECT * o_current,
 208                     NETLIST * netlist, char *hierarchy_tag)
 209 {
 210   char *value;
 211   int counter;
 212
 213   /* for now just look inside the component */
 214   for (counter = 0; ;) {
 215     value = o_attrib_search_inherited_attribs_by_name (o_current,
 216                                                        "net", counter);
 217     if (value == NULL)
 218       break;
 219
 220     counter++;
 221
 222     s_netattrib_create_pins (pr_current, o_current,
 223                              netlist, value, hierarchy_tag);
 224     g_free (value);
 225   }
 226
 227   /* now look outside the component */
 228   for (counter = 0; ;) {
 229     value = o_attrib_search_attached_attribs_by_name (o_current,
 230                                                       "net", counter);
 231     if (value == NULL)
 232       break;
 233
 234     counter++;
 235
 236     s_netattrib_create_pins (pr_current, o_current,
 237                              netlist, value, hierarchy_tag);
 238     g_free (value);
 239   }
 240 }
 241
 242 char *s_netattrib_net_search (OBJECT * o_current, const gchar *wanted_pin)
 243 {
 244   char *value = NULL;
 245   char *char_ptr = NULL;
 246   char *net_name = NULL;
 247   char *current_pin = NULL;
 248   char *start_of_pinlist = NULL;
 249   char *return_value = NULL;
 250   int counter;
 251
 252   if (o_current == NULL ||
 253       o_current->complex == NULL)
 254     return NULL;
 255
 256   /* for now just look inside the component */
 257   for (counter = 0; ;) {
 258     value = o_attrib_search_inherited_attribs_by_name (o_current,
 259                                                        "net", counter);
 260     if (value == NULL)
 261       break;
 262
 263     counter++;
 264
 265     char_ptr = strchr (value, ':');
 266     if (char_ptr == NULL) {
 267       fprintf (stderr, _("Got an invalid net= attrib [net=%s]\n"
 268                        "Missing : in net= attrib\n"), value);
 269       g_free (value);
 270       return NULL;
 271     }
 272
 273     net_name = s_netattrib_extract_netname (value);
 274
 275     start_of_pinlist = char_ptr + 1;
 276     current_pin = strtok (start_of_pinlist, DELIMITERS);
 277     while (current_pin && !return_value) {
 278       if (strcmp (current_pin, wanted_pin) == 0) {
 279         return_value = net_name;
 280       }
 281       current_pin = strtok (NULL, DELIMITERS);
 282     }
 283
 284     g_free (value);
 285   }
 286
 287   /* now look outside the component */
 288   for (counter = 0; ;) {
 289     value = o_attrib_search_attached_attribs_by_name (o_current,
 290                                                       "net", counter);
 291     if (value == NULL)
 292       break;
 293
 294     counter++;
 295
 296     char_ptr = strchr (value, ':');
 297     if (char_ptr == NULL) {
 298       fprintf (stderr, _("Got an invalid net= attrib [net=%s]\n"
 299                        "Missing : in net= attrib\n"), value);
 300       g_free (value);
 301       return NULL;
 302     }
 303
 304     net_name = s_netattrib_extract_netname (value);
 305
 306     start_of_pinlist = char_ptr + 1;
 307     current_pin = strtok (start_of_pinlist, DELIMITERS);
 308     while (current_pin) {
 309       if (strcmp (current_pin, wanted_pin) == 0) {
 310         g_free (return_value);
 311         return net_name;
 312       }
 313       current_pin = strtok (NULL, DELIMITERS);
 314     }
 315
 316     g_free (value);
 317   }
 318
 319   return return_value;
 320 }
 321
 322 char *s_netattrib_return_netname(TOPLEVEL * pr_current, OBJECT * o_current,
 323                                  char *pinnumber, char *hierarchy_tag)
 324 {
 325     const gchar *current_pin;
 326     char *netname;
 327     char *temp_netname;
 328
 329     current_pin = s_netattrib_connected_string_get_pinnum (pinnumber);
 330     if (current_pin == NULL) return NULL;
 331
 332     /* use hierarchy tag here to make this net uniq */
 333     temp_netname = s_netattrib_net_search(o_current->parent,
 334                                           current_pin);
 335
 336     netname =
 337         s_hierarchy_create_netattrib(pr_current, temp_netname,
 338                                      hierarchy_tag);
 339
 340 #if DEBUG
 341     printf("netname: %s\n", netname);
 342 #endif
 343
 344     return (netname);
 345 }