170 lines
2.8 KiB
C
170 lines
2.8 KiB
C
#include "bc_string.h"
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#include "bc_io.h"
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#include <ctype.h>
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/* $Id$ */
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void _readln(void)
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{
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register int c;
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while( (c=fgetc(_chanrd)) != EOF && c!= '\n')
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;
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}
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void readskip(void)
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{
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register int c;
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#ifdef DEBUG
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printf("readskip\n");
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#endif
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while( (c=fgetc(_chanrd)) != EOF && c!= ',' && c!= '\n')
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;
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}
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void _readint(int* addr)
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{
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int i;
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char buf[1024];
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#ifdef DEBUG
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printf("read int from %d\n",_chann);
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#endif
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_asschn();
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if( fscanf(_chanrd,"%d",&i) != 1)
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{
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if( ferror(_chanrd)) error(29);
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if( feof(_chanrd)) error(2);
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if( _chann == -1)
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{
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_asschn(); /* may be closed by now */
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fgets(buf,1024,_chanrd);
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printf("?Redo ");
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_readint(addr);
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return;
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}
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error(40);
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}else { readskip(); *addr=i;}
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}
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void _readflt(double* addr)
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{
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double f;
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char buf[1024];
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#ifdef DEBUG
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printf("read flt from %d\n",_chann);
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#endif
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_asschn();
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if( fscanf(_chanrd,"%lf",&f) != 1)
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{
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if( ferror(_chanrd)) error(29);
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if( feof(_chanrd)) error(2);
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if( _chann == -1)
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{
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fgets(buf,1024,_chanrd);
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printf("?Redo ");
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_readflt(addr);
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return;
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}
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error(40);
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}else { readskip(); *addr=f;}
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}
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void _readstr(String** s)
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{
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char buffer[1024];
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register int kar ;
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char *c;
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#ifdef DEBUG
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printf("read str from %d\n",_chann);
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#endif
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_asschn();
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c= buffer;
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kar= fgetc(_chanrd);
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while(isspace(kar) && kar!= EOF)
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kar= fgetc(_chanrd);
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*c=kar ;
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if( kar== '"')
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{
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/* read quoted string */
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#ifdef DEBUG
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printf("qouted string\n");
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#endif
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while ( (kar= fgetc(_chanrd)) != EOF && kar!='"' ) *c++ = kar ;
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ungetc(kar,_chanrd);
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*c=0;
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}else
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if( isalpha(*c))
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{
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/* read normal string */
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c++;
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#ifdef DEBUG
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printf("non-qouted string\n");
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#endif
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while( (kar= fgetc(_chanrd)) != ',' && kar!= EOF &&
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!isspace(kar) && kar!='\n')
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*c++= kar ;
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ungetc(kar,_chanrd);
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*c=0;
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}else{
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if( ferror(_chanrd)) error(29);
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if( feof(_chanrd)) error(2);
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if( _chann == -1)
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{
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fgets(buffer,1024,_chanrd);
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printf("?Redo ");
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_rdline(s);
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return;
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}
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error(40);
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}
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#ifdef DEBUG
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printf("string read: %s\n",buffer);
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#endif
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readskip();
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/* save value read */
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_decstr(*s);
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*s= (String *) _newstr(buffer);
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}
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extern int _seektab[];
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void _restore(int line)
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{
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int nr;
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char buffer[1024];
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#ifdef DEBUG
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printf("seek to %d",line);
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#endif
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fseek(_chanrd,0l,0);
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if( line)
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{
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/* search number of lines to skip */
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for(nr=0; _seektab[nr] && _seektab[nr]< line; nr+=2)
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#ifdef DEBUG
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printf("test %d %d\n",_seektab[nr], _seektab[nr+1]);
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#endif
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;
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nr /= 2;
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#ifdef DEBUG
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printf(" %d lines to skip\n",nr);
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#endif
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while(nr-- >0 ) fgets(buffer,1024,_chanrd);
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}
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}
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void _rdline(String** s)
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{
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char buffer[1024];
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if( fgets(buffer,1024,_chanrd) == 0)
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{
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if( _chann == -1)
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{
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printf("?Redo ");
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_rdline(s);
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return;
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}
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error(40);
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}
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_decstr(*s);
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*s= (String *) _newstr(buffer);
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}
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