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panda/src/downloader/documentSpec.cxx

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// Filename: documentSpec.cxx
// Created by:  drose (28Jan03)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) 2001, Disney Enterprises, Inc.  All rights reserved
//
// All use of this software is subject to the terms of the Panda 3d
// Software license.  You should have received a copy of this license
// along with this source code; you will also find a current copy of
// the license at http://www.panda3d.org/license.txt .
//
// To contact the maintainers of this program write to
// panda3d@yahoogroups.com .
//
////////////////////////////////////////////////////////////////////

#include "documentSpec.h"
#include "indent.h"


////////////////////////////////////////////////////////////////////
//     Function: DocumentSpec::compare_to
//       Access: Published
//  Description: 
////////////////////////////////////////////////////////////////////
int DocumentSpec::
compare_to(const DocumentSpec &other) const {
  if (_flags != other._flags) {
    return (_flags - other._flags);
  }
  int c = _url.compare_to(other._url);
  if (c != 0) {
    return c;
  }
  if (has_tag()) {
    c = _tag.compare_to(other._tag);
    if (c != 0) {
      return c;
    }
  }
  if (has_date()) {
    c = _date.compare_to(other._date);
    if (c != 0) {
      return c;
    }
  }

  // We don't consider _request_mode or _cache_control significant in
  // the comparison.

  return 0;
}

////////////////////////////////////////////////////////////////////
//     Function: DocumentSpec::input
//       Access: Published
//  Description: Can be used to read in the DocumentSpec from a stream
//               generated either by output() or write().  Returns
//               true on success, false on failure.
////////////////////////////////////////////////////////////////////
bool DocumentSpec::
input(istream &in) {
  // First, clear the spec.
  (*this) = DocumentSpec();

  char ch;
  in >> ch;
  if (ch != '[') {
    return false;
  }
  in >> _url;
  in >> ch;
  if (ch == '(') {
    // Scan the tag, up to but not including the closing paren.
    string tag;
    in >> ch;
    while (!in.fail() && !in.eof() && ch != ')') {
      tag += ch;
      // We want to include embedded whitespace, so we use get().
      ch = in.get();
    }
    set_tag(HTTPEntityTag(tag));

    // Now ch is the close paren following the tag; skip to the next
    // character.
    in >> ch;
  }

  // Scan the date, up to but not including the closing bracket.
  if (ch != ']') {
    string date;
    while (!in.fail() && !in.eof() && ch != ']') {
      date += ch;
      ch = in.get();
    }

    set_date(HTTPDate(date));
    if (!get_date().is_valid()) {
      return false;
    }
  }

  return true;
}

////////////////////////////////////////////////////////////////////
//     Function: DocumentSpec::output
//       Access: Published
//  Description: 
////////////////////////////////////////////////////////////////////
void DocumentSpec::
output(ostream &out) const {
  out << "[ " << get_url();
  if (has_tag()) {
    out << " (" << get_tag() << ")";
  }
  if (has_date()) {
    out << " " << get_date();
  }
  out << " ]";
}

////////////////////////////////////////////////////////////////////
//     Function: DocumentSpec::write
//       Access: Published
//  Description: 
////////////////////////////////////////////////////////////////////
void DocumentSpec::
write(ostream &out, int indent_level) const {
  indent(out, indent_level)
    << "[ " << get_url();
  if (has_tag()) {
    out << "\n";
    indent(out, indent_level + 2)
      << "(" << get_tag() << ")";
  }
  if (has_date()) {
    out << "\n";
    indent(out, indent_level + 2)
      << get_date();
  }
  out << " ]\n";
}

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