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#include "readwrite.h"
#include "open.h"
#include "getln.h"
#include "stralloc.h"
#include "substdio.h"
#include "error.h"
#include "control.h"
#include "alloc.h"
#include "scan.h"
static char inbuf[64];
static stralloc line = {0};
static stralloc me = {0};
static int meok = 0;
static void striptrailingwhitespace(sa)
stralloc *sa;
{
while (sa->len > 0)
switch(sa->s[sa->len - 1])
{
case '\n': case ' ': case '\t':
--sa->len;
break;
default:
return;
}
}
int control_init()
{
int r;
r = control_readline(&me,"control/me");
if (r == 1) meok = 1;
return r;
}
int control_rldef(sa,fn,flagme,def)
stralloc *sa;
char *fn;
int flagme;
char *def;
{
int r;
r = control_readline(sa,fn);
if (r) return r;
if (flagme) if (meok) return stralloc_copy(sa,&me) ? 1 : -1;
if (def) return stralloc_copys(sa,def) ? 1 : -1;
return r;
}
int control_readline(sa,fn)
stralloc *sa;
char *fn;
{
substdio ss;
int fd;
int match;
fd = open_read(fn);
if (fd == -1) { if (errno == error_noent) return 0; return -1; }
substdio_fdbuf(&ss,read,fd,inbuf,sizeof(inbuf));
if (getln(&ss,sa,&match,'\n') == -1) { close(fd); return -1; }
striptrailingwhitespace(sa);
close(fd);
return 1;
}
int control_readint(i,fn)
int *i;
char *fn;
{
unsigned long u;
switch(control_readline(&line,fn))
{
case 0: return 0;
case -1: return -1;
}
if (!stralloc_0(&line)) return -1;
if (!scan_ulong(line.s,&u)) return 0;
*i = u;
return 1;
}
int control_readfile(sa,fn,flagme)
stralloc *sa;
char *fn;
int flagme;
{
substdio ss;
int fd;
int match;
if (!stralloc_copys(sa,"")) return -1;
fd = open_read(fn);
if (fd == -1)
{
if (errno == error_noent)
{
if (flagme && meok)
{
if (!stralloc_copy(sa,&me)) return -1;
if (!stralloc_0(sa)) return -1;
return 1;
}
return 0;
}
return -1;
}
substdio_fdbuf(&ss,read,fd,inbuf,sizeof(inbuf));
for (;;)
{
if (getln(&ss,&line,&match,'\n') == -1) break;
if (!match && !line.len) { close(fd); return 1; }
striptrailingwhitespace(&line);
if (!stralloc_0(&line)) break;
if (line.s[0])
if (line.s[0] != '#')
if (!stralloc_cat(sa,&line)) break;
if (!match) { close(fd); return 1; }
}
close(fd);
return -1;
}
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