#include <unistd.h>

#include "buffer.h"
#include "getln.h"
#include "logmsg.h"
#include "str.h"
#include "stralloc.h"

#define WHO "printmaillist"

static void badformat()
{
  logmsg(WHO, 100, FATAL, "bad mailing list format");
}

stralloc line = {0};
int match;

int main()
{
  for (;;) {
    if (getln(buffer_1small, &line, &match, '\0') == -1)
      logmsg(WHO, 111, FATAL, "unable to read input: ");
    if (!match) {
      if (line.len) badformat();
      if (buffer_flush(buffer_1small) == -1) logmsg(WHO, 111, FATAL, "unable to write output: ");
      _exit(0);
    }

    if (line.s[str_chr(line.s, '\n')]) badformat();
    if (line.s[line.len - 1] == ' ') badformat();
    if (line.s[line.len - 1] == '\t') badformat();

    if ((line.s[0] == '.') || (line.s[0] == '/')) {
      if (buffer_puts(buffer_1small, line.s) == -1) logmsg(WHO, 111, FATAL, "unable to write output: ");
      if (buffer_puts(buffer_1small, "\n") == -1) logmsg(WHO, 111, FATAL, "unable to write output: ");
      continue;
    }
    if (line.s[0] == '&') {
      if (line.len > 900) badformat();
      if (buffer_puts(buffer_1small, line.s) == -1) logmsg(WHO, 111, FATAL, "unable to write output: ");
      if (buffer_puts(buffer_1small, "\n") == -1) logmsg(WHO, 111, FATAL, "unable to write output: ");
      continue;
    }

    badformat();
  }
}