mdw@git.distorted.org.uk Git - fastforward/blob - printmaillist.c

   1 #include "substdio.h"
   2 #include "subfd.h"
   3 #include "strerr.h"
   4 #include "stralloc.h"
   5 #include "getln.h"
   6
   7 #define FATAL "printmaillist: fatal: "
   8
   9 void badformat()
  10 {
  11   strerr_die2x(100,FATAL,"bad mailing list format");
  12 }
  13
  14 stralloc line = {0};
  15 int match;
  16
  17 void main()
  18 {
  19   for (;;) {
  20     if (getln(subfdinsmall,&line,&match,'\0') == -1)
  21       strerr_die2sys(111,FATAL,"unable to read input: ");
  22     if (!match) {
  23       if (line.len)
  24         badformat();
  25       if (substdio_flush(subfdoutsmall) == -1)
  26         strerr_die2sys(111,FATAL,"unable to write output: ");
  27       _exit(0);
  28     }
  29
  30     if (line.s[str_chr(line.s,'\n')]) badformat();
  31     if (line.s[line.len - 1] == ' ') badformat();
  32     if (line.s[line.len - 1] == '\t') badformat();
  33
  34     if ((line.s[0] == '.') || (line.s[0] == '/')) {
  35       if (substdio_puts(subfdoutsmall,line.s) == -1)
  36         strerr_die2sys(111,FATAL,"unable to write output: ");
  37       if (substdio_puts(subfdoutsmall,"\n") == -1)
  38         strerr_die2sys(111,FATAL,"unable to write output: ");
  39       continue;
  40     }
  41     if (line.s[0] == '&') {
  42       if (line.len > 900) badformat();
  43       if (substdio_puts(subfdoutsmall,line.s) == -1)
  44         strerr_die2sys(111,FATAL,"unable to write output: ");
  45       if (substdio_puts(subfdoutsmall,"\n") == -1)
  46         strerr_die2sys(111,FATAL,"unable to write output: ");
  47       continue;
  48     }
  49
  50     badformat();
  51   }
  52 }