printmaillist.c

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#include <unistd.h>
#include "buffer.h"
#include "logmsg.h"
#include "stralloc.h"
#include "getln.h"
#include "str.h"
 
#define WHO "printmaillist"
 
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();
  }
}