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#include "control.h"
#include <unistd.h>
#include "alloc.h"
#include "buffer.h"
#include "error.h"
#include "getln.h"
#include "logmsg.h"
#include "open.h"
#include "scan.h"
#include "stralloc.h"
static char inbuf[2048];
static stralloc line = {0};
static stralloc me = {0};
static int meok = 0;
/** @file control.c
*/
static void striptrailingwhitespace(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(void)
{
int r;
r = control_readline(&me, "control/me");
if (r == 1) meok = 1;
return r;
}
int control_rldef(stralloc *sa, char *fn, int flagme, char *def)
{
int r;
r = control_readline(sa, fn);
if (r) return r;
if (flagme && meok) return stralloc_copy(sa, &me) ? 1 : -1;
if (def) return stralloc_copys(sa, def) ? 1 : -1;
return r;
}
int control_readline(stralloc *sa, char *fn)
{
buffer b;
int fd;
int match;
fd = open_read(fn);
if (fd == -1) {
if (errno == ENOENT) return 0;
return -1;
}
buffer_init(&b, read, fd, inbuf, sizeof(inbuf));
if (getln(&b, sa, &match, '\n') == -1) {
close(fd);
return -1;
}
striptrailingwhitespace(sa);
close(fd);
return 1;
}
int control_readint(unsigned long *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(stralloc *sa, char *fn, int flagme)
{
buffer b;
int fd;
int match;
if (!stralloc_copys(sa, "")) return -1;
fd = open_read(fn);
if (fd == -1) {
if (errno == ENOENT) {
if (flagme && meok) {
if (!stralloc_copy(sa, &me)) return -1;
if (!stralloc_0(sa)) return -1;
return 1;
}
return 0;
}
return -1;
}
buffer_init(&b, read, fd, inbuf, sizeof(inbuf));
for (;;) {
if (getln(&b, &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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