1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2010 AT&T Intellectual Property * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Intellectual Property * 8 * * 9 * A copy of the License is available at * 10 * http://www.opensource.org/licenses/cpl1.0.txt * 11 * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12 * * 13 * Information and Software Systems Research * 14 * AT&T Research * 15 * Florham Park NJ * 16 * * 17 * Glenn Fowler <gsf@research.att.com> * 18 * David Korn <dgk@research.att.com> * 19 * Phong Vo <kpv@research.att.com> * 20 * * 21 ***********************************************************************/ 22 #include "sfhdr.h" 23 24 /* Write out a character n times 25 ** 26 ** Written by Kiem-Phong Vo. 27 */ 28 29 #if __STD_C 30 ssize_t sfnputc(Sfio_t* f, int c, size_t n) 31 #else 32 ssize_t sfnputc(f,c,n) 33 Sfio_t* f; /* file to write */ 34 int c; /* char to be written */ 35 size_t n; /* number of time to repeat */ 36 #endif 37 { 38 reg uchar* ps; 39 reg ssize_t p, w; 40 uchar buf[128]; 41 reg int local; 42 SFMTXDECL(f); 43 44 SFMTXENTER(f,-1); 45 46 GETLOCAL(f,local); 47 if(SFMODE(f,local) != SF_WRITE && _sfmode(f,SF_WRITE,local) < 0) 48 SFMTXRETURN(f, -1); 49 50 SFLOCK(f,local); 51 52 /* write into a suitable buffer */ 53 if((size_t)(p = (f->endb-(ps = f->next))) < n) 54 { ps = buf; p = sizeof(buf); } 55 if((size_t)p > n) 56 p = n; 57 MEMSET(ps,c,p); 58 ps -= p; 59 60 w = n; 61 if(ps == f->next) 62 { /* simple sfwrite */ 63 f->next += p; 64 if(c == '\n') 65 (void)SFFLSBUF(f,-1); 66 goto done; 67 } 68 69 for(;;) 70 { /* hard write of data */ 71 if((p = SFWRITE(f,(Void_t*)ps,p)) <= 0 || (n -= p) <= 0) 72 { w -= n; 73 goto done; 74 } 75 if((size_t)p > n) 76 p = n; 77 } 78 done : 79 SFOPEN(f,local); 80 SFMTXRETURN(f, w); 81 } 82