/* ----------------------------------------------------------------------------- 
 * misc.c
 *
 *     Miscellaneous functions that don't really fit anywhere else.
 * 
 * Author(s) : David Beazley (beazley@cs.uchicago.edu)
 *
 * Copyright (C) 1999-2000.  The University of Chicago
 * See the file LICENSE for information on usage and redistribution.	
 * ----------------------------------------------------------------------------- */

char cvsroot_misc_c[] = "$Header$";

#include "swig.h"
#include <ctype.h>
#include <limits.h>

/* -----------------------------------------------------------------------------
 * Swig_copy_string()
 *
 * Duplicate a NULL-terminate string given as a char *.
 * ----------------------------------------------------------------------------- */

char *
Swig_copy_string(const char *s) {
  char *c = 0;
  if (s) {
    c = (char *) malloc(strlen(s)+1);
    strcpy(c,s);
  }
  return c;
}

/* -----------------------------------------------------------------------------
 * Swig_banner()
 *
 * Emits the SWIG identifying banner.
 * ----------------------------------------------------------------------------- */

void
Swig_banner(File *f) {
  Printf(f,
"/* ----------------------------------------------------------------------------\n\
 * This file was automatically generated by SWIG (http://www.swig.org).\n\
 * Version %s\n\
 * \n\
 * This file is not intended to be easily readable and contains a number of \n\
 * coding conventions designed to improve portability and efficiency. Do not make\n\
 * changes to this file unless you know what you are doing--modify the SWIG \n\
 * interface file instead. \n", PACKAGE_VERSION);
  /* String too long for ISO compliance */
  Printf(f,
" * ----------------------------------------------------------------------------- */\n\n");

}

/* -----------------------------------------------------------------------------
 * Swig_string_escape()
 *
 * Takes a string object and produces a string with escape codes added to it.
 * ----------------------------------------------------------------------------- */

String *Swig_string_escape(String *s) {
  String *ns;
  int c;
  ns = NewString("");
  
  while ((c = Getc(s)) != EOF) {
    if (c == '\n') {
      Printf(ns,"\\n");
    } else if (c == '\r') {
      Printf(ns,"\\r");
    } else if (c == '\t') {
      Printf(ns,"\\t");
    } else if (c == '\\') {
      Printf(ns,"\\\\");
    } else if (c == '\'') {
      Printf(ns,"\\'");
    } else if (c == '\"') {
      Printf(ns,"\\\"");
    } else if (c == ' ') {
      Putc(c,ns);
    } else if (!isgraph(c)) {
      if (c < 0) c += UCHAR_MAX +1;
      Printf(ns,"\\%o", c);
    } else {
      Putc(c,ns);
    }
  }
  return ns;
}


/* -----------------------------------------------------------------------------
 * Swig_string_upper()
 *
 * Takes a string object and returns a copy that is uppercase
 * ----------------------------------------------------------------------------- */

String *Swig_string_upper(String *s) {
  String *ns;
  int c;
  ns = NewString("");

  Seek(s,0,SEEK_SET);
  while ((c = Getc(s)) != EOF) {
    Putc(toupper(c),ns);
  }
  return ns;
}

/* -----------------------------------------------------------------------------
 * Swig_string_lower()
 *
 * Takes a string object and returns a copy that is lowercase
 * ----------------------------------------------------------------------------- */

String *Swig_string_lower(String *s) {
  String *ns;
  int c;
  ns = NewString("");

  Seek(s,0,SEEK_SET);
  while ((c = Getc(s)) != EOF) {
    Putc(tolower(c),ns);
  }
  return ns;
}


/* -----------------------------------------------------------------------------
 * Swig_string_title()
 *
 * Takes a string object and returns a copy that is lowercase with first letter
 * capitalized
 * ----------------------------------------------------------------------------- */

String *Swig_string_title(String *s) {
  String *ns;
  int first = 1;
  int c;
  ns = NewString("");

  Seek(s,0,SEEK_SET);
  while ((c = Getc(s)) != EOF) {
    Putc(first ? toupper(c) : tolower(c),ns);
    first = 0;
  }
  return ns;
}

/* -----------------------------------------------------------------------------
 * Swig_string_typecode()
 *
 * Takes a string with possible type-escapes in it and replaces them with
 * real C datatypes.
 * ----------------------------------------------------------------------------- */

String *Swig_string_typecode(String *s) {
  String *ns;
  int c;
  String *tc;
  ns = NewString("");
  while ((c = Getc(s)) != EOF) {
    if (c == '`') {
      String *str = 0;
      tc = NewString("");
      while ((c = Getc(s)) != EOF) {
	if (c == '`') break;
	Putc(c,tc);
      }
      str = SwigType_str(tc,0);
      Printf(ns,"%s",str);
      Delete(str);
    } else {
      Putc(c,ns);
      if (c == '\'') {
	while ((c = Getc(s)) != EOF) {
	  Putc(c,ns);
	  if (c == '\'') break;
	  if (c == '\\') {
	    c = Getc(s);
	    Putc(c,ns);
	  }
	}
      } else if (c == '\"') {
	while ((c = Getc(s)) != EOF) {
	  Putc(c,ns);
	  if (c == '\"') break;
	  if (c == '\\') {
	    c = Getc(s);
	    Putc(c,ns);
	  }
	}
      }
    }
  }
  return ns;
}
      
/* -----------------------------------------------------------------------------
 * Swig_string_mangle()
 * 
 * Take a string and mangle it by stripping all non-valid C identifier
 * characters.
 *
 * This routine skips unnecessary blank spaces, therefore mangling
 * 'char *' and 'char*', 'std::pair<int, int >' and
 * 'std::pair<int,int>', produce the same result.
 *
 * However, note that 'long long' and 'long_long' produce different
 * mangled strings.
 *
 * The mangling method still is not 'perfect', for example std::pair and
 * std_pair return the same mangling. This is just a little better
 * than before, but it seems to be enough for most of the purposes.
 *
 * Having a perfect mangling will break some examples and code which
 * assume, for example, that A::get_value will be mangled as
 * A_get_value. 
 * ----------------------------------------------------------------------------- */

String *Swig_string_mangle(const String *s) {
#if 0 
  /* old mangling, not suitable for using in macros */
  String *t = Copy(s);
  char *c = Char(t);
  while (*c) {
    if (!isalnum(*c)) *c = '_';
    c++;
  }
  return t;
#else
  String *result = NewString("");
  int space = 0;
  int state = 0;
  char *pc, *cb;
  String *b = Copy(s);
  if (SwigType_istemplate(b)) {
    String *st = Swig_symbol_template_deftype(b, 0);
    String *sq = Swig_symbol_type_qualify(st,0);
    String *t = SwigType_namestr(sq);
    Delete(st);
    Delete(sq);
    Delete(b);
    b = t ;
  }
  pc = cb = Char(b);
  while (*pc) {
    char c = *pc;
    if (isalnum((int)c) || (c == '_')) {
      state = 1;
      if (space && (space == state)) {
	Printf(result,"_SS_");
      }
      space = 0;
      Printf(result,"%c",(int)c);
      
    } else {
      if (isspace((int)c)) {
	space = state;
	++pc;
	continue;
      } else {
	state = 3;
	space = 0;
      }
      switch(c) {
      case '.':
	if ((cb != pc) && (*(pc - 1) == 'p')) {
	  Append(result,"_");
	  ++pc;
	  continue;
	} else {
	  c = 'f';
	}
	break;
      case ':':
	if (*(pc + 1) == ':') {
	  Append(result,"_");
	  ++pc; ++pc;
	  continue;
	}
	break;
      case '*':
	c = 'm';
	break;
      case '&':
	c = 'A';
	break;
      case '<':
	c = 'l';
	break;
      case '>':
	c = 'g';
	break;
      case '=':
	c = 'e';
	break;
      case ',':
	c = 'c';
	break;
      case '(':
	c = 'p';
	break;
      case ')':
	c = 'P';
	break;
      case '[':
	c = 'b';
	break;
      case ']':
	c = 'B';
	break;
      case '^':
	c = 'x';
	break;
      case '|':
	c = 'o';
	break;
      case '~':
	c = 'n';
	break;
      case '!':
	c = 'N';
	break;
      case '%':
	c = 'M';
	break;
      case '?':
	c = 'q';
	break;
      case '+':
	c = 'a';
	break;
      case '-':
	c = 's';
	break;
      case '/':
	c = 'd';
	break;
      default:
	break;
      }
      if (isalpha((int)c)) {
	Printf(result,"_S%c_",(int)c);
      } else{
	Printf(result,"_S%02X_",(int)c);
      }
    }
    ++pc;
  }
  Delete(b);
  return result;
#endif
}

/* -----------------------------------------------------------------------------
 * Swig_scopename_prefix()
 *
 * Take a qualified name like "A::B::C" and return the scope name.
 * In this case, "A::B".   Returns NULL if there is no base.
 * ----------------------------------------------------------------------------- */

String *
Swig_scopename_prefix(String *s) {
  char *tmp = Char(s);
  char *c = tmp;
  char *cc = c;
  char *co = 0;
  if (!strstr(c,"::")) return 0;
  if ((co = strstr(cc,"operator "))) {
    if (co == cc) {
      return 0;
    } else {
      String *prefix = NewStringWithSize(cc, co - cc - 2);
      return prefix;
    }
  }
  while (*c) {
    if ((*c == ':') && (*(c+1) == ':')) {
      cc = c;
      c += 2;
    } else {
      if (*c == '<') {
	int level = 1;
	c++;
	while (*c && level) {
	  if (*c == '<') level++;
	  if (*c == '>') level--;
	  c++;
	}
      } else {
	c++;
      }
    }
  }

  if (cc != tmp) {
    return NewStringWithSize(tmp, cc - tmp);
  } else {
    return 0;
  }
}

/* -----------------------------------------------------------------------------
 * Swig_scopename_last()
 *
 * Take a qualified name like "A::B::C" and returns the last.  In this
 * case, "C". 
 * ----------------------------------------------------------------------------- */

String *
Swig_scopename_last(String *s) {
  char *tmp = Char(s);
  char *c = tmp;
  char *cc = c;
  char *co = 0;
  if (!strstr(c,"::")) return NewString(s);

  if ((co = strstr(cc,"operator "))) {
    return NewString(co);
  }


  while (*c) {
    if ((*c == ':') && (*(c+1) == ':')) {
      cc = c;
      c += 2;
    } else {
      if (*c == '<') {
	int level = 1;
	c++;
	while (*c && level) {
	  if (*c == '<') level++;
	  if (*c == '>') level--;
	  c++;
	}
      } else {
	c++;
      }
    }
  }
  return NewString(cc+2);
}

/* -----------------------------------------------------------------------------
 * Swig_scopename_first()
 *
 * Take a qualified name like "A::B::C" and returns the first scope name.
 * In this case, "A".   Returns NULL if there is no base.
 * ----------------------------------------------------------------------------- */

String *
Swig_scopename_first(String *s) {
  char *tmp = Char(s);
  char   *c = tmp;
  char *co = 0;
  if (!strstr(c,"::")) return 0;
  if ((co = strstr(c,"operator "))) {
    if (co == c) {
      return 0;
    }
  } else {
    co = c + Len(s);
  }
  
  while (*c && (c != co)) {
    if ((*c == ':') && (*(c+1) == ':')) {
      break;
    } else {
      if (*c == '<') {
	int level = 1;
	c++;
	while (*c && level) {
	  if (*c == '<') level++;
	  if (*c == '>') level--;
	  c++;
	}
      } else {
	c++;
      }
    }
  }
  if (*c && (c != tmp)) {
    return NewStringWithSize(tmp, c - tmp);
  } else {
    return 0;
  }
}


/* -----------------------------------------------------------------------------
 * Swig_scopename_suffix()
 *
 * Take a qualified name like "A::B::C" and returns the suffix.
 * In this case, "B::C".   Returns NULL if there is no suffix.
 * ----------------------------------------------------------------------------- */

String *
Swig_scopename_suffix(String *s) {
  char *tmp = Char(s);
  char *c = tmp;
  char *co = 0;
  if (!strstr(c,"::")) return 0;
  if ((co = strstr(c,"operator "))) {
    if (co == c) return 0;
  }
  while (*c) {
    if ((*c == ':') && (*(c+1) == ':')) {
      break;
    } else {
      if (*c == '<') {
	int level = 1;
	c++;
	while (*c && level) {
	  if (*c == '<') level++;
	  if (*c == '>') level--;
	  c++;
	}
      } else {
	c++;
      }
    }
  }
  if (*c && (c != tmp)) {
    return NewString(c+2);
  } else {
    return 0;
  }
}
/* -----------------------------------------------------------------------------
 * Swig_scopename_check()
 *
 * Checks to see if a name is qualified with a scope name
 * ----------------------------------------------------------------------------- */

int Swig_scopename_check(String *s) {
  char *c = Char(s);
  char *co = 0;
  if ((co = strstr(c,"operator "))) {
    if (co == c) return 0;
  }
  if (!strstr(c,"::")) return 0;
  while (*c) {
    if ((*c == ':') && (*(c+1) == ':')) {
      return 1;
    } else {
      if (*c == '<') {
	int level = 1;
	c++;
	while (*c && level) {
	  if (*c == '<') level++;
	  if (*c == '>') level--;
	  c++;
	}
      } else {
	c++;
      }
    }
  }
  return 0;
}


/* -----------------------------------------------------------------------------
 * Swig_init()
 *
 * Initialize the SWIG core
 * ----------------------------------------------------------------------------- */

void
Swig_init() {
  /* Set some useful string encoding methods */
  DohEncoding("escape", Swig_string_escape);
  DohEncoding("upper", Swig_string_upper);
  DohEncoding("lower", Swig_string_lower);
  DohEncoding("title", Swig_string_title);
  DohEncoding("typecode",Swig_string_typecode);

  /* Initialize typemaps */
  Swig_typemap_init();

  /* Initialize symbol table */
  Swig_symbol_init();

  /* Initialize type system */
  SwigType_typesystem_init();

}