text: /* 
     Copyright (c) 1991-1999 Thomas T. Wetmore IV
  
     Permission is hereby granted, free of charge, to any person
     obtaining a copy of this software and associated documentation
     files (the "Software"), to deal in the Software without
     restriction, including without limitation the rights to use, copy,
     modify, merge, publish, distribute, sublicense, and/or sell copies
     of the Software, and to permit persons to whom the Software is
     furnished to do so, subject to the following conditions:
  
     The above copyright notice and this permission notice shall be
     included in all copies or substantial portions of the Software.
  
     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
     BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
     ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
     CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     SOFTWARE.
  */
  /* modified 05 Jan 2000 by Paul B. McBride (pmcbride@tiac.net) */
  /*=============================================================
   * misc.c -- Various useful, miscellaneous routines
   * Copyright(c) 1992-94 by T.T. Wetmore IV; all rights reserved
   *   2.3.4 - 24 Jun 93    2.3.5 - 02 Sep 93
   *   3.0.0 - 08 May 94    3.0.2 - 12 Dec 94
   *   3.0.3 - 06 Aug 95
   *===========================================================*/
  
  #include "llstdlib.h"
  #include "table.h"
  #include "translat.h"
  #include "gedcom.h"
  #include "zstr.h"
  
  /*========================================
   * addat -- Add @'s to both ends of string
   *  returns static buffer
   *======================================*/
  STRING
  addat (STRING str)
  {
  	STRING p;
  	static char buffer[3][20];
  	static INT dex = 0;
  	if (++dex > 2) dex = 0;
  	p = buffer[dex];
  	snprintf(p, sizeof(buffer[dex]), "@%s@", str);
  	return p;
  }
  /*===========================================
   * rmvat_char -- Remove bracketing characters
   *  from around a string
   *  returns static buffer
   *==========================================*/
  static STRING
  rmvat_char (CNSTRING str, char c, char d)
  {
  	STRING p;
  	int len;
  	/* WARNING: GEDCOM 5.5 specifies that the resulting string (XREF) can be
  	 * 1 to 22 characters. Allow a little extra. */
  	static char buffer[32][32];	/* was [10][20] pbm 11-jun-96*/
  	static INT dex = 0;
  	/* Watch out for bad pointers */
  	if((str == NULL) || (*str == '\0')) return(NULL);
  	if (str[0] != c) return NULL;
  	if (++dex > 31) dex = 0;	/* was 9 pbm 11-jun-96*/
  	p = buffer[dex];
  	len = strlen(str+1);
  	if (str[len] != d) return NULL;
  	if(len > 31) len = 31;		/* 31 characters is maximum */
  	else if(len > 0) len--;
  	strncpy(p, &str[1], len);
  	p[len] = 0;	/* overwrite trailing "@" with null */
  	return p;
  }
  /*=============================================
   * rmvat -- Remove @'s from both ends of string
   *  returns static buffer
   *===========================================*/
  STRING
  rmvat (CNSTRING str)
  {
  	return rmvat_char(str, '@', '@');
  }
  /*=============================================
   * rmvbrackets -- Remove <>'s from around a string
   *  returns static buffer
   *===========================================*/
  STRING
  rmvbrackets (CNSTRING str)
  {
  	return rmvat_char(str, '<', '>');
  }
  /*=============================================
   * node_to_keynum -- key # of a 0 level node
   * returns 0 for failure
   *===========================================*/
  INT
  node_to_keynum(char ntype, NODE nod)
  {
  	if (!nod) return 0;
  	return xrefval(ntype, nxref(nod));
  }
  /*=============================================
   * xrefval -- numeric value after removing @'s at both ends
   *===========================================*/
  INT
  xrefval (char ntype, STRING str)
  {
  	INT val, i, len;
  	if ((str == NULL) || (*str == '\0')) return 0;
  	len = strlen(str);
  	if (str[0] != '@' || str[len-1] != '@') return 0;
  	if (str[1] != ntype) return 0;
  	val=0;
  	for (i=2; i<len-1; i++) {
  		if (chartype((uchar)str[i]) != DIGIT) return 0;
  		if (i>31) return 0;
  		val = val*10 + (str[i]-'0');
  	}
  	return val;
  }
  /*==============================================
   * find_tag -- Search node list for specific tag
   *============================================*/
  NODE
  find_tag (NODE node, CNSTRING str)
  {
  	while (node) {
  		ASSERT(ntag(node));
  		if (eqstr(str, ntag(node))) return node;
  		node = nsibling(node);
  	}
  	return NULL;
  }
  /*=================================================
   * val_to_sex -- Convert SEX value to internal form
   *===============================================*/
  INT
  val_to_sex (NODE node)
  {
  	if (!node || !nval(node)) return SEX_UNKNOWN;
  	if (eqstr("M", nval(node))) return SEX_MALE;
  	if (eqstr("F", nval(node))) return SEX_FEMALE;
  	return SEX_UNKNOWN;
  }
  /*====================================================
   * full_value -- Return value of node, with CONC & CONT lines
   * (sep is used before CONT lines, eg, "\n")
   * heap-allocated string is returned
   *==================================================*/
  STRING
  full_value (NODE node, STRING sep)
  {
  	NODE child;
  	ZSTR zstr = 0;
  	STRING str = 0;
  	if (!node) return NULL;
  	if (nval(node))
  		zstr = zs_news(nval(node));
  	else
  		zstr = zs_new();
  	for (child = nchild(node); child	; child = nsibling(child)) {
  		if (nchild(child) || !ntag(child)) break;
  		if (eqstr("CONC", ntag(child))) {
  			if (nval(child)) {
  				zs_apps(zstr, nval(child));
  			}
  		} else if (eqstr("CONT", ntag(child))) {
  			if (sep) {
  				zs_apps(zstr, sep);
  			}
  			if (nval(child)) {
  				zs_apps(zstr, nval(child));
  			}
  		} else {
  			break;
  		}
  	}
  	str = strdup(zs_str(zstr));
  	zs_free(&zstr);
  	return str;
  }
  