166 lines
3.3 KiB
C
166 lines
3.3 KiB
C
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//
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//
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// GETSBREC.C - Reads records from the .SBR file and stores the fields
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// in the appropriate r_.. buffers.
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//
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#include "sbrfdef.h"
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#include "..\mbrmake\mbrmake.h"
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// globals for communicating with clients
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BYTE near r_rectyp; // current record type
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BYTE near r_majv; // major version num
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BYTE near r_minv; // minor version num
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BYTE near r_lang; // source language
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BYTE near r_fcol; // read column #'s
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WORD near r_lineno; // current line number
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BYTE near r_column = 0; // def/ref column num
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WORD near r_ordinal; // symbol ordinal
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WORD near r_attrib; // symbol attribute
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char near r_bname[PATH_BUF]; // symbol or filename
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char near r_cwd[PATH_BUF]; // .sbr file working directory
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int near fhCur; // Current input handle
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#pragma intrinsic(memcpy)
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#pragma intrinsic(strcpy)
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#pragma intrinsic(strlen)
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#define MY_BUF_SIZE 16384
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static char sbrBuf[MY_BUF_SIZE + 1];
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static char *pchBuf;
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static int cchBuf;
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#define GetByte(X) \
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{ \
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if (!cchBuf) { \
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cchBuf = read(fhCur, sbrBuf, MY_BUF_SIZE); \
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sbrBuf[cchBuf] = 0; \
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pchBuf = sbrBuf; \
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\
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if (cchBuf == 0) \
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SBRCorrupt("premature EOF"); \
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} \
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\
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cchBuf--; \
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(X) = (unsigned char)*pchBuf++; \
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}
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#define GetWord(X) \
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{ \
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\
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GetByte(((char *)&(X))[0]); \
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GetByte(((char *)&(X))[1]); \
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}
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void
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GetStr(char *buf)
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// get null terminated string from current .sbr file
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//
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{
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register int l;
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for (;;) {
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// there is always a NULL after the real buffer
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l = strlen(pchBuf);
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if (l++ < cchBuf) {
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strcpy(buf, pchBuf);
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cchBuf -= l;
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pchBuf += l;
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return;
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}
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memcpy(buf, pchBuf, cchBuf);
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buf += cchBuf;
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cchBuf = read(fhCur, sbrBuf, MY_BUF_SIZE);
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sbrBuf[cchBuf] = 0;
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pchBuf = sbrBuf;
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if (cchBuf == 0)
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SBRCorrupt("premature EOF");
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}
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}
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BYTE
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GetSBRRec()
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// read the next record from the current .sbr file
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//
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{
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static fFoundHeader;
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BYTE col;
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// read rectype, check for EOF as we go
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if (!cchBuf) {
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cchBuf = read(fhCur, sbrBuf, MY_BUF_SIZE);
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sbrBuf[cchBuf] = 0;
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pchBuf = sbrBuf;
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if (cchBuf == 0) {
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fFoundHeader = 0; // this is in case we are reinitialized
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return S_EOF;
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}
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}
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cchBuf--;
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r_rectyp = (unsigned char)*pchBuf++;
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switch(r_rectyp) {
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case SBR_REC_HEADER:
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if (fFoundHeader)
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SBRCorrupt("Multiple Headers");
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fFoundHeader = 1;
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GetByte(r_majv);
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GetByte(r_minv);
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GetByte(r_lang);
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GetByte(r_fcol);
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if (r_majv != 1 || r_minv != 1)
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break;
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GetStr (r_cwd);
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break;
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case SBR_REC_MODULE:
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GetStr (r_bname);
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break;
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case SBR_REC_LINDEF:
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GetWord (r_lineno);
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if (r_lineno)
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r_lineno--;
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break;
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case SBR_REC_SYMDEF:
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GetWord (r_attrib);
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GetWord (r_ordinal);
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if (r_fcol) GetByte (col);
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GetStr (r_bname);
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break;
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case SBR_REC_OWNER:
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GetWord (r_ordinal);
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break;
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case SBR_REC_SYMREFUSE:
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case SBR_REC_SYMREFSET:
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GetWord (r_ordinal);
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if (r_fcol) GetByte (col);
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break;
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case SBR_REC_MACROBEG:
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case SBR_REC_MACROEND:
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case SBR_REC_BLKBEG:
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case SBR_REC_BLKEND:
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case SBR_REC_MODEND:
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break;
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}
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return (r_rectyp);
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}
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