[f40a309] | 1 | /*
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| 2 | ============================================================================
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| 3 | putc.c -- stream file output and close functions
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| 4 | Version 7 -- 1987-10-19 -- D.N. Lynx Crowe
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| 5 | ============================================================================
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| 6 | */
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| 7 |
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[6262b5c] | 8 | #include "all.h"
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[f40a309] | 9 |
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[7258c6a] | 10 | extern int16_t write(int16_t fd, int8_t *buff, uint16_t len);
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[0580615] | 11 | extern void getbuff(FILE *ptr);
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[7258c6a] | 12 | extern int16_t close(int16_t fd);
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[f40a309] | 13 |
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[7258c6a] | 14 | extern int16_t (*_clsall)();
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[f40a309] | 15 |
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[7258c6a] | 16 | static int16_t (*cls_rtn)();
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[f40a309] | 17 |
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[7258c6a] | 18 | int16_t _ClFlag;
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[f40a309] | 19 |
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| 20 | /*
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| 21 | ============================================================================
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| 22 | closall() -- close all files at exit
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| 23 | ============================================================================
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| 24 | */
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| 25 |
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[0580615] | 26 | static void closall(void)
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[f40a309] | 27 | {
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| 28 | register FILE *fp;
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| 29 |
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| 30 | for (fp = Cbuffs; fp < (Cbuffs + NSTREAMS); ) /* close each file */
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| 31 | fclose(fp++);
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| 32 |
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| 33 | (*cls_rtn)(); /* do final closeout */
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| 34 | }
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| 35 |
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| 36 | /* |
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| 37 |
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| 38 | */
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| 39 |
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| 40 | /*
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| 41 | ============================================================================
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| 42 | flush_() -- do the dirty work of flushing a file
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| 43 | ============================================================================
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| 44 | */
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[7258c6a] | 45 |
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[f40a309] | 46 | int16_t flush_(FILE *ptr, int16_t data)
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[7258c6a] | 47 | {
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[f40a309] | 48 | register int16_t size;
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| 49 |
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| 50 | if (_ClFlag EQ 0) {
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| 51 |
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| 52 | cls_rtn = _clsall;
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| 53 | _clsall = closall;
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| 54 | _ClFlag = 1;
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| 55 | }
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| 56 |
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| 57 | if (ptr->_flags & _DIRTY) { /* something in the buffer ? */
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[7258c6a] | 58 |
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[f40a309] | 59 | size = (int16_t)((int32_t)ptr->_bp - (int32_t)ptr->_buff);
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| 60 |
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| 61 | if (write(ptr->_unit, ptr->_buff, size) EQ -1) {
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| 62 |
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| 63 | ioerr:
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| 64 | ptr->_flags |= _IOERR;
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| 65 | return(EOF);
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| 66 | }
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| 67 | }
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| 68 |
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| 69 | if (data EQ -1) { /* just flushing, not adding data */
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| 70 |
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| 71 | ptr->_flags &= ~_DIRTY;
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| 72 | ptr->_bend = ptr->_bp = NULL;
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| 73 | return(0);
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| 74 | }
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| 75 |
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| 76 | if (ptr->_buff EQ NULL) /* get a buffer if we don't have one */
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| 77 | getbuff(ptr);
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| 78 |
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| 79 | if (ptr->_buflen EQ 1) { /* unbuffered I/O */
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| 80 |
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| 81 | if (write(ptr->_unit, &data, 1) EQ -1)
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| 82 | goto ioerr;
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| 83 |
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| 84 | return(data);
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| 85 | }
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| 86 |
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| 87 | ptr->_bp = ptr->_buff;
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| 88 | ptr->_bend = ptr->_buff + ptr->_buflen;
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| 89 | ptr->_flags |= _DIRTY;
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| 90 |
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| 91 | return((*ptr->_bp++ = data) & 0x00FF);
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| 92 | }
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| 93 |
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| 94 | /* |
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| 95 |
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| 96 | */
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| 97 |
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| 98 | /*
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| 99 | ============================================================================
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| 100 | fflush() -- flush a stream file
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| 101 | ============================================================================
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[7258c6a] | 102 | */
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[f40a309] | 103 |
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| 104 | int16_t fflush(FILE *ptr)
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| 105 | {
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| 106 | return(flush_(ptr, -1));
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| 107 | }
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| 108 |
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| 109 | /*
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| 110 | ============================================================================
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| 111 | fclose() -- close a stream file
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| 112 | ============================================================================
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[7258c6a] | 113 | */
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[f40a309] | 114 |
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[7258c6a] | 115 | int16_t fclose(FILE *ptr)
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[f40a309] | 116 | {
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| 117 | int16_t err;
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| 118 |
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| 119 | err = 0;
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| 120 |
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| 121 | if (ptr->_flags) {
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| 122 |
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| 123 | if (ptr->_flags & _DIRTY) /* if modifed, flush buffer */
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| 124 | err = flush_(ptr, -1);
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| 125 |
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| 126 | err |= close(ptr->_unit);
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| 127 |
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[7258c6a] | 128 | if (ptr->_flags & _ALLBUF) { /* deallocate standard buffer */
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| 129 |
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[f40a309] | 130 | *(int32_t **)ptr->_buff = Stdbufs;
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| 131 | Stdbufs = (int32_t *)ptr->_buff;
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| 132 | }
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| 133 | }
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| 134 |
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| 135 | ptr->_flags = 0;
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| 136 | return(err);
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| 137 | }
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| 138 |
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| 139 | /* |
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| 140 |
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| 141 | */
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| 142 |
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| 143 | /*
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| 144 | ============================================================================
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| 145 | putc() -- write a character on a file
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[7258c6a] | 146 | ============================================================================
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[f40a309] | 147 | */
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| 148 |
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| 149 | int16_t putc(int16_t c, FILE *ptr)
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| 150 | {
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| 151 | if (ptr->_bp GE ptr->_bend)
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| 152 | return(flush_(ptr, c & 0xFF));
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| 153 |
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| 154 | return((*ptr->_bp++ = c) & 0xFF);
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| 155 | }
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| 156 |
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| 157 | /*
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| 158 | ============================================================================
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| 159 | puterr() -- write a character to stderr
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[7258c6a] | 160 | ============================================================================
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[f40a309] | 161 | */
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| 162 |
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| 163 | int16_t puterr(int16_t c)
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| 164 | {
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[6262b5c] | 165 | return(putc(c, stderr));
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| 166 | }
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| 167 |
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| 168 |
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