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#include <stdio.h>
#include <ctype.h>
#ifdef MEMDBG
#include "memdbg.h"
#endif
#include "memory.h"
#define QUOTE '\''
char *treereadname(f)
FILE *f;
{
char *tmp;
int more=1;
int quoted=0;
int ch;
tmp=new_string();
if(tmp==NULL)
return(NULL);
ch=getc(f);
if(ch==QUOTE)
{
quoted=1;
ch=getc(f);
}
else
quoted=0;
while(more)
switch(ch)
{
case QUOTE:
ch=getc(f);
if(ch==QUOTE)
if(!add_char(tmp, QUOTE))
{
/* not enough memory */
free(tmp);
return(NULL);
}
else
ch=getc(f);
else
{
if(quoted)
{
/* have read whole name */
ungetc(ch, f);
more=0;
}
else
{
/* error reading name, quote at end of unquoted name */
free(tmp);
ungetc(ch, f);
return(NULL);
}
}
break;
case ':':
case ',':
case ')':
case '[':
case ';':
if(quoted)
{
if(!add_char(tmp, ch))
{
/* not enough memory */
free(tmp);
return(NULL);
}
else
ch=getc(f);
}
else
{
/* have read whole name */
ungetc(ch, f);
more=0;
}
break;
case EOF:
if(quoted)
{
/* error, EOF in name */
free(tmp);
return(NULL);
}
else
{
/* have read whole name */
ungetc(ch, f);
more=0;
}
break;
default:
if(quoted)
{
if(!add_char(tmp, ch))
{
/* not enough memory */
free(tmp);
return(NULL);
}
else
ch=getc(f);
}
else
if(isspace(ch))
{
/* have read whole name */
ungetc(ch, f);
more=0;
}
else
{
if(!add_char(tmp, ch))
{
/* not enough memory */
free(tmp);
return(NULL);
}
else
ch=getc(f);
}
break;
}
tmp=freeze_string(tmp);
return(tmp);
}
int treewritename(f, n)
FILE *f;
char *n;
{
int i;
if(n==NULL)
{
putc(QUOTE, f);
putc(QUOTE, f);
}
else
{
putc(QUOTE, f);
for(;*n!='\0';putc(*(n++), f))
/* if it's a quote, put two of them */
if(*n==QUOTE)
putc(QUOTE, f);
putc(QUOTE, f);
}
return(1);
}
int treeskipspace(f)
FILE *f;
{
static int ch;
while(isspace(ch=getc(f)));
return(ch);
}
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