/
bits.c
168 lines (156 loc) · 2.23 KB
/
bits.c
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#include "bits.h"
char *fgetl(FILE *fp)
{
string s=init_string();
signed int c;
while(!feof(fp))
{
c=fgetc(fp);
if((c==EOF)||(c=='\n'))
break;
if(c!=0)
{
append_char(&s, c);
}
}
return(s.buf);
}
char *finpl(FILE *fp)
{
string s=init_string();
signed int c;
while(!feof(fp))
{
c=fgetc(fp);
if((c==EOF)||(c=='\n'))
break;
if(c==8)
{
if(s.i) s.i--;
}
else if(c!=0)
{
append_char(&s, c);
}
}
return(s.buf);
}
char *slurp(FILE *fp)
{
string s=init_string();
signed int c;
while(!feof(fp))
{
c=fgetc(fp);
if(c==EOF)
break;
if(c!=0)
append_char(&s, c);
}
return(s.buf);
}
string sslurp(FILE *fp)
{
if(!fp) return(null_string());
string s=init_string();
signed int c;
while(!feof(fp))
{
c=fgetc(fp);
if(c==EOF)
break;
append_char(&s, c);
}
return(s);
}
void append_char(string *s, char c)
{
if(s->buf)
{
s->buf[s->i++]=c;
}
else
{
*s=init_string();
append_char(s, c);
}
char *nbuf=s->buf;
if(s->i>=s->l)
{
if(s->i)
s->l=s->i*2;
else
s->l=80;
nbuf=(char *)realloc(s->buf, s->l);
}
if(nbuf)
{
s->buf=nbuf;
s->buf[s->i]=0;
}
else
{
free(s->buf);
*s=init_string();
}
}
void append_str(string *s, const char *str)
{
while(str && *str) // not the most tremendously efficient implementation, but conceptually simple at least
{
append_char(s, *str++);
}
}
void append_string(string *s, const string t)
{
if(!s) return;
size_t i=s->i+t.i;
if(i>=s->l)
{
size_t l=i+1;
char *nbuf=(char *)realloc(s->buf, l);
if(!nbuf) return;
s->l=l;
s->buf=nbuf;
}
memcpy(s->buf+s->i, t.buf, t.i);
s->buf[i]=0;
s->i=i;
}
string init_string(void)
{
string s;
s.buf=(char *)malloc(s.l=80);
if(s.buf)
s.buf[0]=0;
else
s.l=0;
s.i=0;
return(s);
}
string null_string(void)
{
return((string){.buf=NULL, .l=0, .i=0});
}
string make_string(const char *str)
{
string s=init_string();
append_str(&s, str);
return(s);
}
void free_string(string *s)
{
free(s->buf);
}
FILE *configopen(const char *name, const char *mode)
{
char *fullname=malloc(strlen(PREFIX)+16+strlen(name));
if(fullname)
{
sprintf(fullname, PREFIX"/share/spiffy/%s", name);
FILE *fp=fopen(fullname, mode);
free(fullname);
if(fp) return(fp);
}
return(fopen(name, mode));
}