Annotation of src/usr.bin/window/string.c, Revision 1.1
1.1 ! deraadt 1: /* $NetBSD: string.c,v 1.5 1995/09/29 00:44:06 cgd Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1983, 1993
! 5: * The Regents of the University of California. All rights reserved.
! 6: *
! 7: * This code is derived from software contributed to Berkeley by
! 8: * Edward Wang at The University of California, Berkeley.
! 9: *
! 10: * Redistribution and use in source and binary forms, with or without
! 11: * modification, are permitted provided that the following conditions
! 12: * are met:
! 13: * 1. Redistributions of source code must retain the above copyright
! 14: * notice, this list of conditions and the following disclaimer.
! 15: * 2. Redistributions in binary form must reproduce the above copyright
! 16: * notice, this list of conditions and the following disclaimer in the
! 17: * documentation and/or other materials provided with the distribution.
! 18: * 3. All advertising materials mentioning features or use of this software
! 19: * must display the following acknowledgement:
! 20: * This product includes software developed by the University of
! 21: * California, Berkeley and its contributors.
! 22: * 4. Neither the name of the University nor the names of its contributors
! 23: * may be used to endorse or promote products derived from this software
! 24: * without specific prior written permission.
! 25: *
! 26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 36: * SUCH DAMAGE.
! 37: */
! 38:
! 39: #ifndef lint
! 40: #if 0
! 41: static char sccsid[] = "@(#)string.c 8.1 (Berkeley) 6/6/93";
! 42: #else
! 43: static char rcsid[] = "$NetBSD: string.c,v 1.5 1995/09/29 00:44:06 cgd Exp $";
! 44: #endif
! 45: #endif /* not lint */
! 46:
! 47: #include "string.h"
! 48: #include <stdlib.h>
! 49: #include <string.h>
! 50:
! 51: char *
! 52: str_cpy(s)
! 53: register char *s;
! 54: {
! 55: char *str;
! 56: register char *p;
! 57:
! 58: str = p = str_alloc(strlen(s) + 1);
! 59: if (p == 0)
! 60: return 0;
! 61: while (*p++ = *s++)
! 62: ;
! 63: return str;
! 64: }
! 65:
! 66: char *
! 67: str_ncpy(s, n)
! 68: register char *s;
! 69: register n;
! 70: {
! 71: int l = strlen(s);
! 72: char *str;
! 73: register char *p;
! 74:
! 75: if (n > l)
! 76: n = l;
! 77: str = p = str_alloc(n + 1);
! 78: if (p == 0)
! 79: return 0;
! 80: while (--n >= 0)
! 81: *p++ = *s++;
! 82: *p = 0;
! 83: return str;
! 84: }
! 85:
! 86: char *
! 87: str_itoa(i)
! 88: int i;
! 89: {
! 90: char buf[30];
! 91:
! 92: (void) sprintf(buf, "%d", i);
! 93: return str_cpy(buf);
! 94: }
! 95:
! 96: char *
! 97: str_cat(s1, s2)
! 98: char *s1, *s2;
! 99: {
! 100: char *str;
! 101: register char *p, *q;
! 102:
! 103: str = p = str_alloc(strlen(s1) + strlen(s2) + 1);
! 104: if (p == 0)
! 105: return 0;
! 106: for (q = s1; *p++ = *q++;)
! 107: ;
! 108: for (q = s2, p--; *p++ = *q++;)
! 109: ;
! 110: return str;
! 111: }
! 112:
! 113: /*
! 114: * match s against p.
! 115: * s can be a prefix of p with at least min characters.
! 116: */
! 117: str_match(s, p, min)
! 118: register char *s, *p;
! 119: register min;
! 120: {
! 121: for (; *s && *p && *s == *p; s++, p++, min--)
! 122: ;
! 123: return *s == *p || *s == 0 && min <= 0;
! 124: }
! 125:
! 126: #ifdef STR_DEBUG
! 127: char *
! 128: str_alloc(l)
! 129: int l;
! 130: {
! 131: register struct string *s;
! 132:
! 133: s = (struct string *) malloc((unsigned)l + str_offset);
! 134: if (s == 0)
! 135: return 0;
! 136: if (str_head.s_forw == 0)
! 137: str_head.s_forw = str_head.s_back = &str_head;
! 138: s->s_forw = str_head.s_forw;
! 139: s->s_back = &str_head;
! 140: str_head.s_forw = s;
! 141: s->s_forw->s_back = s;
! 142: return s->s_data;
! 143: }
! 144:
! 145: str_free(str)
! 146: char *str;
! 147: {
! 148: register struct string *s;
! 149:
! 150: for (s = str_head.s_forw; s != &str_head && s->s_data != str;
! 151: s = s->s_forw)
! 152: ;
! 153: if (s == &str_head)
! 154: abort();
! 155: s->s_back->s_forw = s->s_forw;
! 156: s->s_forw->s_back = s->s_back;
! 157: free((char *)s);
! 158: }
! 159: #endif
![[BACK]](/icons/back.gif){kind=icon}
Return to string.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / window