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Archive::Reader

Public Class Methods

open_filename(p1, p2 = v2, p3 = v3) click to toggle source 
static VALUE rb_libarchive_reader_s_open_filename(int argc, VALUE *argv, VALUE self) {
  VALUE v_filename, v_compression, v_format;
  const char *filename = NULL;
  int compression = -1, format = -1;
  const char *cmd = NULL;
  rb_scan_args(argc, argv, "12", &v_filename, &v_compression, &v_format);
  Check_Type(v_filename, T_STRING);
  filename = RSTRING_PTR(v_filename);

  if (T_STRING == TYPE(v_compression)) {
    compression = -1;
    cmd = RSTRING_PTR(v_compression);
  } else if (!NIL_P(v_compression)) {
    compression = NUM2INT(v_compression);
  }

  if (!NIL_P(v_format)) {
    format = NUM2INT(v_format);
  }

  return rb_libarchive_reader_s_open0(rb_libarchive_reader_s_open_filename0, (void *) filename, compression, format, cmd);
}
open_memory(p1, p2 = v2, p3 = v3) click to toggle source 
static VALUE rb_libarchive_reader_s_open_memory(int argc, VALUE *argv, VALUE self) {
  VALUE v_memory, v_compression, v_format;
  int compression = -1, format = -1;
  const char *cmd = NULL;
  rb_scan_args(argc, argv, "12", &v_memory, &v_compression, &v_format);
  Check_Type(v_memory, T_STRING);

  if (T_STRING == TYPE(v_compression)) {
    compression = -1;
    cmd = RSTRING_PTR(v_compression);
  } else if (!NIL_P(v_compression)) {
    compression = NUM2INT(v_compression);
  }

  if (!NIL_P(v_format)) {
    format = NUM2INT(v_format);
  }

  return rb_libarchive_reader_s_open0(rb_libarchive_reader_s_open_memory0, (void *) v_memory, compression, format, cmd);
}

Public Instance Methods

close() click to toggle source 
static VALUE rb_libarchive_reader_close(VALUE self) {
  struct rb_libarchive_archive_container *p;
  Data_Get_Struct(self, struct rb_libarchive_archive_container, p);
  Check_Archive(p);
  rb_libarchive_reader_close0(p);
  return Qnil;
}
compression() click to toggle source 
static VALUE rb_libarchive_archive_compression(VALUE self) {
  struct rb_libarchive_archive_container *p;
  Data_Get_Struct(self, struct rb_libarchive_archive_container, p);
  Check_Archive(p);
  return INT2NUM(archive_compression(p->ar));
}
compression_name() click to toggle source 
static VALUE rb_libarchive_archive_compression_name(VALUE self) {
  struct rb_libarchive_archive_container *p;
  Data_Get_Struct(self, struct rb_libarchive_archive_container, p);
  Check_Archive(p);
  return rb_str_new2(archive_compression_name(p->ar));
}
extract(p1, p2 = v2) click to toggle source 
static VALUE rb_libarchive_reader_extract(int argc, VALUE *argv, VALUE self) {
  VALUE v_entry, v_flags;
  struct rb_libarchive_archive_container *pa;
  struct rb_libarchive_entry_container *pae;
  int flags = 0;
  rb_scan_args(argc, argv, "11", &v_entry, &v_flags);
  Check_Class(v_entry, rb_cArchiveEntry);

  if (!NIL_P(v_flags)) {
    flags = (NUM2INT(v_flags) & EXTRACT_FLAGS);
  }

  Data_Get_Struct(self, struct rb_libarchive_archive_container, pa);
  Check_Archive(pa);

  if (pa->eof) {
    rb_raise(rb_eArchiveError, "Extract archive failed: It has already reached EOF");
  }

  Data_Get_Struct(v_entry, struct rb_libarchive_entry_container, pae);
  Check_Entry(pae);

  if (archive_read_extract(pa->ar, pae->ae, flags) != ARCHIVE_OK) {
    rb_raise(rb_eArchiveError, "Extract archive failed: %s", archive_error_string(pa->ar));
  }

  return Qnil;
}
format() click to toggle source 
static VALUE rb_libarchive_archive_format(VALUE self) {
  struct rb_libarchive_archive_container *p;
  Data_Get_Struct(self, struct rb_libarchive_archive_container, p);
  Check_Archive(p);
  return NUM2INT(archive_format(p->ar));
}
format_name() click to toggle source 
static VALUE rb_libarchive_archive_format_name(VALUE self) {
  struct rb_libarchive_archive_container *p;
  Data_Get_Struct(self, struct rb_libarchive_archive_container, p);
  Check_Archive(p);
  return rb_str_new2(archive_format_name(p->ar));
}
header_position() click to toggle source 
static VALUE rb_libarchive_reader_header_position(VALUE self) {
  struct rb_libarchive_archive_container *p;
  Data_Get_Struct(self, struct rb_libarchive_archive_container, p);
  Check_Archive(p);
  return LONG2NUM((long) archive_read_header_position(p->ar));
}
next_header() click to toggle source 
static VALUE rb_libarchive_reader_next_header(VALUE self) {
  struct rb_libarchive_archive_container *p;
  struct archive_entry *ae;
  int r;
  Data_Get_Struct(self, struct rb_libarchive_archive_container, p);
  Check_Archive(p);

  if (p->eof) {
    return Qnil;
  }

  r = archive_read_next_header(p->ar, &ae);

  if (r == ARCHIVE_EOF) {
    p->eof = 1;
    return Qnil;
  } else if (r != ARCHIVE_OK) {
    rb_raise(rb_eArchiveError, "Fetch entry failed: %s", archive_error_string(p->ar));
  }

  return rb_libarchive_entry_new(ae, 0);
}
position_compressed() click to toggle source 
static VALUE rb_libarchive_archive_position_compressed(VALUE self) {
  struct rb_libarchive_archive_container *p;
  Data_Get_Struct(self, struct rb_libarchive_archive_container, p);
  Check_Archive(p);
  return LL2NUM(archive_position_compressed(p->ar));
}
position_uncompressed() click to toggle source 
static VALUE rb_libarchive_archive_position_uncompressed(VALUE self) {
  struct rb_libarchive_archive_container *p;
  Data_Get_Struct(self, struct rb_libarchive_archive_container, p);
  Check_Archive(p);
  return LL2NUM(archive_position_uncompressed(p->ar));
}
read_data(p1 = v1) click to toggle source 
static VALUE rb_libarchive_reader_read_data(int argc, VALUE *argv, VALUE self) {
  VALUE v_size;
  struct rb_libarchive_archive_container *p;
  char *buff;
  size_t size = DATA_BUFFER_SIZE;
  ssize_t n;
  rb_scan_args(argc, argv, "01", &v_size);

  if (!NIL_P(v_size)) {
    size = NUM2INT(v_size);
  }

  Data_Get_Struct(self, struct rb_libarchive_archive_container, p);
  Check_Archive(p);

  if (p->eof) {
    return Qnil;
  }

  if (rb_block_given_p()) {
    ssize_t len = 0;
    int status = 0;
    buff = xmalloc(size);

    while ((n = archive_read_data(p->ar, buff, size)) > 0) {
      rb_protect(rb_yield, rb_str_new(buff, n), &status);

      if (status != 0) {
        break;
      }

      len += n;
    }

    xfree(buff);

    if (status != 0) {
      rb_jump_tag(status);
    }

    if (n < 0) {
      rb_raise(rb_eArchiveError, "Read data failed: %s", archive_error_string(p->ar));
    }

    return LONG2NUM(len);
  } else {
    VALUE retval = rb_str_new("", 0);
    buff = xmalloc(size);

    while ((n = archive_read_data(p->ar, buff, size)) > 0) {
      rb_str_cat(retval, buff, n);
    }

    xfree(buff);

    if (n < 0) {
      rb_raise(rb_eArchiveError, "Read data failed: %s", archive_error_string(p->ar));
    }

    return retval;
  }
}
save_data(p1, p2 = v2) click to toggle source 
static VALUE rb_libarchive_reader_save_data(int argc, VALUE *argv, VALUE self) {
  VALUE v_filename, v_flags;
  struct rb_libarchive_archive_container *p;
  const char *filename;
  int flags, fd, r;
  rb_scan_args(argc, argv, "11", &v_filename, &v_flags);
  Check_Type(v_filename, T_STRING);
  filename = RSTRING_PTR(v_filename);

  if (!NIL_P(v_flags)) {
    flags = ((O_WRONLY | NUM2INT(v_flags)) & O_FLAGS);
  } else {
    flags = (O_WRONLY | O_CREAT | O_EXCL
#ifdef O_BINARY
             | O_BINARY
#endif
             );
  }

  Data_Get_Struct(self, struct rb_libarchive_archive_container, p);
  Check_Archive(p);

  if ((fd = open(filename, flags)) == -1) {
    rb_raise(rb_eArchiveError, "Save data failed: %s", strerror(errno));
  }

  r = archive_read_data_into_fd(p->ar, fd);
  _close(fd);

  if (r != ARCHIVE_OK) {
    rb_raise(rb_eArchiveError, "Save data failed: %s", archive_error_string(p->ar));
  }

  return Qnil;
}

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