#include "../strff.h"

#include <errno.h>

int strff_read(struct strff *strff, size_t buflen, char buf[buflen])
{
  size_t nread;
  int r;
  char c;
  int isnewline;
  if (strff->fieldtype == STRFF_TYPE_NONE) {
    errno = EINVAL; /* cannot read NONE field */
    return -1;
  }

  isnewline = 1;
  nread = 0;
  while (nread < buflen) {
    r = buffer_peekc(&strff->b, &c);
    if (r < 0) return -1;
    if (r == 0) {
      if (isnewline && nread > 0)
        nread--; /* remove last \n */
      break;
    }

    if (strff->fieldtype == STRFF_TYPE_EQUAL && c == '\n')
      break;
    else if (strff->fieldtype == STRFF_TYPE_BRACKET) {
      if (isnewline && c == '[') {
        if (nread > 0)
          nread--; /* remove last \n */
        break;
      }
      isnewline = 0;
      if (c == '\n')
        isnewline = 1;
    }

    buf[nread++] = c;
    strff->b.p++;
  }
  return nread;
}