1/* Implement Input/Output runtime actions for CHILL. 2 Copyright (C) 1992,1993 Free Software Foundation, Inc. 3 Author: Wilfried Moser, et al 4 5This file is part of GNU CC. 6 7GNU CC is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 2, or (at your option) 10any later version. 11 12GNU CC is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along with GNU CC; see the file COPYING. If not, write to 19the Free Software Foundation, 59 Temple Place - Suite 330, 20Boston, MA 02111-1307, USA. */ 21 22/* As a special exception, if you link this library with other files, 23 some of which are compiled with GCC, to produce an executable, 24 this library does not by itself cause the resulting executable 25 to be covered by the GNU General Public License. 26 This exception does not however invalidate any other reasons why 27 the executable file might be covered by the GNU General Public License. */ 28 29#include <setjmp.h> 30#include <errno.h> 31#include <string.h> 32#include <unistd.h> 33#include <sys/types.h> 34 35#include "fileio.h" 36 37static 38void 39doWrite( Access_Mode* the_access, void* buf, size_t nbyte ) 40{ 41 size_t nwrit; 42 43 nwrit = write( the_access->association->handle, buf, nbyte ); 44 45 if( nwrit < nbyte ) 46 { 47 the_access->association->syserrno = errno; 48 RWEXCEPTION( WRITEFAIL, OS_IO_ERROR ); 49 } 50} 51 52 53void 54__writerecord( Access_Mode* the_access, 55 signed long the_index, 56 char* the_val_addr, 57 unsigned long the_val_len, 58 char* file, 59 int line ) 60 61{ 62 Association_Mode* the_assoc; 63 unsigned long info; 64 char* actaddr; 65 unsigned short actlen; 66 off_t filepos; 67 68 if( !the_access ) 69 CHILLEXCEPTION( file, line, EMPTY, NULL_ACCESS ); 70 71 if( !(the_assoc = the_access->association) ) 72 CHILLEXCEPTION( file, line, NOTCONNECTED, IS_NOT_CONNECTED ); 73 74 /* Usage must no be ReadOnly */ 75 if( the_assoc->usage == ReadOnly ) 76 CHILLEXCEPTION( file, line, WRITEFAIL, BAD_USAGE ); 77 78 /* 79 * Positioning 80 */ 81 if( TEST_FLAG( the_access, IO_INDEXED ) ) 82 { 83 /* index expression must be within bounds of index mode */ 84 if( the_index < the_access->lowindex 85 || the_access->highindex < the_index ) 86 CHILLEXCEPTION( file, line, RANGEFAIL, BAD_INDEX ); 87 filepos = the_access->base + 88 (the_index - the_access->lowindex) * the_access->reclength; 89 90 if( lseek( the_assoc->handle, filepos, SEEK_SET ) == -1L ) 91 CHILLEXCEPTION( file, line, WRITEFAIL, LSEEK_FAILS ); 92 } 93 94 if( (info = setjmp( __rw_exception )) ) 95 CHILLEXCEPTION( file, line, info>>16, info & 0xffff ); 96 97 if( TEST_FLAG( the_access, IO_TEXTIO ) ) 98 { 99 if( TEST_FLAG( the_access, IO_INDEXED ) ) 100 { 101 int nspace = the_access->reclength - the_val_len; 102 memset( the_val_addr + 2 + the_val_len, ' ', nspace ); 103 actlen = the_access->reclength - 2; 104 MOV2(the_val_addr,&actlen); 105 doWrite( the_access, the_val_addr, the_access->reclength ); 106 } 107 else 108 { 109 if( the_assoc->ctl_pre ) 110 write( the_assoc->handle, &the_assoc->ctl_pre, 1 ); 111 MOV2(&actlen,the_val_addr); 112 write( the_assoc->handle, the_val_addr + 2, actlen ); 113 if( the_assoc->ctl_post ) 114 write( the_assoc->handle, &the_assoc->ctl_post, 1 ); 115 the_assoc->ctl_pre = '\0'; 116 the_assoc->ctl_post = '\n'; 117 } 118 } 119 else 120 { 121 switch( the_access->rectype ) 122 { 123 case Fixed: 124 if( TEST_FLAG( the_assoc, IO_VARIABLE ) ) 125 { 126 actlen = the_access->reclength; 127 doWrite( the_access, &actlen, sizeof(actlen) ); 128 } 129 doWrite( the_access, the_val_addr, the_val_len ); 130 break; 131 case VaryingChars: 132 MOV2(&actlen,the_val_addr); 133 if( actlen > the_access->reclength - 2 ) 134 CHILLEXCEPTION( file, line, RANGEFAIL, RECORD_TOO_LONG ); 135 actlen = TEST_FLAG( the_access, IO_INDEXED ) 136 ? the_access->reclength : actlen + 2; 137 doWrite( the_access, the_val_addr, actlen ); 138 break; 139 } 140 } 141} 142