headerbody.c

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#include "stralloc.h"
#include "buffer.h"
#include "getln.h"
#include "hfield.h"
#include "headerbody.h"
 
static int getsa(buffer *b,stralloc *sa,int *match)
{
  if (!*match) return 0;
  if (getln(b,sa,match,'\n') == -1) return -1;
  if (*match) return 1;
  if (!sa->len) return 0;
  if (!stralloc_append(sa,"\n")) return -1;
 
  return 1;
}
 
static stralloc line = {0};
static stralloc nextline = {0};
 
int headerbody(buffer *b,void (*dohf)(),void (*hdone)(),void (*dobl)())
{
  int match;
  int flaglineok;
  match = 1;
  flaglineok = 0;
 
  for (;;) {
    switch (getsa(b,&nextline,&match)) {
      case -1:
        return -1;
      case 0:
        if (flaglineok) dohf(&line);
        hdone();
        /* no message body; could insert blank line here */
        return 0;
    }
 
    if (flaglineok) {
      if ((nextline.s[0] == ' ') || (nextline.s[0] == '\t')) {
        if (!stralloc_cat(&line,&nextline)) return -1;
        continue;
      }
      dohf(&line);
    }
 
    if (nextline.len == 1) {
      hdone();
      dobl(&nextline);
      break;
    }
 
    if (stralloc_starts(&nextline,"From ")) {
      if (!stralloc_copys(&line,"MBOX-Line: ")) return -1;
      if (!stralloc_cat(&line,&nextline)) return -1;
    } else if (hfield_valid(nextline.s,nextline.len)) {
      if (!stralloc_copy(&line,&nextline)) return -1;
    } else {
      hdone();
      if (!stralloc_copys(&line,"\n")) return -1;
      dobl(&line);
      dobl(&nextline);
      break;
    }
    flaglineok = 1;
  }
 
  for (;;)
    switch (getsa(b,&nextline,&match)) {
      case -1: return -1;
      case 0: return 0;
      case 1: dobl(&nextline);
    }
}