14887Schin /*********************************************************************** 24887Schin * * 34887Schin * This software is part of the ast package * 4*12068SRoger.Faulkner@Oracle.COM * Copyright (c) 1985-2010 AT&T Intellectual Property * 54887Schin * and is licensed under the * 64887Schin * Common Public License, Version 1.0 * 78462SApril.Chin@Sun.COM * by AT&T Intellectual Property * 84887Schin * * 94887Schin * A copy of the License is available at * 104887Schin * http://www.opensource.org/licenses/cpl1.0.txt * 114887Schin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 124887Schin * * 134887Schin * Information and Software Systems Research * 144887Schin * AT&T Research * 154887Schin * Florham Park NJ * 164887Schin * * 174887Schin * Glenn Fowler <gsf@research.att.com> * 184887Schin * David Korn <dgk@research.att.com> * 194887Schin * Phong Vo <kpv@research.att.com> * 204887Schin * * 214887Schin ***********************************************************************/ 224887Schin #pragma prototyped 234887Schin /* 244887Schin * Glenn Fowler 254887Schin * AT&T Bell Laboratories 264887Schin * 274887Schin * convert a 0 terminated character constant string to an int 284887Schin */ 294887Schin 304887Schin #include <ast.h> 314887Schin 324887Schin int chrtoi(register const char * s)334887Schinchrtoi(register const char* s) 344887Schin { 354887Schin register int c; 364887Schin register int n; 374887Schin register int x; 384887Schin char* p; 394887Schin 404887Schin c = 0; 414887Schin for (n = 0; n < sizeof(int) * CHAR_BIT; n += CHAR_BIT) 424887Schin { 434887Schin switch (x = *((unsigned char*)s++)) 444887Schin { 454887Schin case '\\': 464887Schin x = chresc(s - 1, &p); 474887Schin s = (const char*)p; 484887Schin break; 494887Schin case 0: 504887Schin return(c); 514887Schin } 524887Schin c = (c << CHAR_BIT) | x; 534887Schin } 544887Schin return(c); 554887Schin } 56