objects/UML/stereotype.c

   1 /* Dia -- an diagram creation/manipulation program
   2  * Copyright (C) 1998 Alexander Larsson
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17  */
  18
  19 /* Separate functions to handle stereotypes in guillemots. */
  20
  21 #include <config.h>
  22
  23 #include <string.h>
  24 #include "stereotype.h"
  25
  26 gchar *
  27 string_to_bracketted (gchar *str,
  28                       const char *start_bracket,
  29                       const char *end_bracket)
  30 {
  31   return g_strconcat (start_bracket, (str ? str : ""), end_bracket, NULL);
  32 }
  33
  34 gchar *
  35 bracketted_to_string (gchar *bracketted,
  36                       const char *start_bracket,
  37                       const char *end_bracket)
  38 {
  39   const char *utfstart, *utfend, *utfstr;
  40   int start_len, end_len, str_len;
  41
  42   if (!bracketted) return NULL;
  43
  44   utfstart = start_bracket;
  45   utfend = end_bracket;
  46
  47   start_len = strlen (utfstart);
  48   end_len = strlen (utfend);
  49   str_len = strlen (bracketted);
  50   utfstr = bracketted;
  51
  52   if (!strncmp (utfstr, utfstart, start_len)) {
  53     utfstr += start_len;
  54     str_len -= start_len;
  55   }
  56   if (str_len >= end_len && end_len > 0) {
  57     if (g_utf8_strrchr (utfstr, str_len, g_utf8_get_char (utfend)))
  58       str_len -= end_len;
  59   }
  60   return g_strndup (utfstr, str_len);
  61 }
  62
  63 gchar *
  64 string_to_stereotype (gchar *str)
  65 {
  66   if ((str) && str[0] != '\0')
  67     return string_to_bracketted(str, UML_STEREOTYPE_START, UML_STEREOTYPE_END);
  68   return g_strdup(str);
  69 }
  70
  71 gchar *
  72 remove_stereotype_from_string (gchar *stereotype)
  73 {
  74   if (stereotype) {
  75     char *tmp = bracketted_to_string (stereotype,
  76                                          UML_STEREOTYPE_START, UML_STEREOTYPE_END);
  77     g_free(stereotype);
  78     return tmp;
  79   } else {
  80     return NULL;
  81   }
  82 }
  83
  84 gchar *
  85 stereotype_to_string (gchar *stereotype)
  86 {
  87   return bracketted_to_string(stereotype,
  88                               UML_STEREOTYPE_START, UML_STEREOTYPE_END);
  89 }