pub mod error;

use std::fmt::Display;

use std::fs;

use crate::error::Error;
use crate::error::*;

    pub fn category(category_id: usize) -> Result<Categories, String> { 

    pub fn category(category_id: usize) -> Result<Categories, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn category_children(category_id: usize) -> Result<Categories, String> {

    pub fn category_children(category_id: usize) -> Result<Categories, Error> {

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn category_related(category_id: usize) -> Result<Categories, String> {

    pub fn category_related(category_id: usize) -> Result<Categories, Error> {

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn category_series(category_id: usize) -> Result<CategorySeries, String> {

    pub fn category_series(category_id: usize) -> Result<CategorySeries, Error> {

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn category_tags(category_id: usize) -> Result<CategoryTags, String> {

    pub fn category_tags(category_id: usize) -> Result<CategoryTags, Error> {

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn category_related_tags(category_id: usize, tag_names: &str) -> Result<CategoryRelatedTags, String> {

    pub fn category_related_tags(category_id: usize, tag_names: &str) -> Result<CategoryRelatedTags, Error> {

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn releases() -> Result<Releases, String> { 

    pub fn releases() -> Result<Releases, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn releases_dates() -> Result<ReleaseDates, String> { 

    pub fn releases_dates() -> Result<ReleaseDates, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn release(release_id: usize) -> Result<Release, String> { 

    pub fn release(release_id: usize) -> Result<Release, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn release_dates(release_id: usize) -> Result<ReleaseDates, String> { 

    pub fn release_dates(release_id: usize) -> Result<ReleaseDates, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn release_series(release_id: usize) -> Result<ReleaseSeries, String> { 

    pub fn release_series(release_id: usize) -> Result<ReleaseSeries, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn release_sources(release_id: usize) -> Result<ReleaseSources, String> { 

    pub fn release_sources(release_id: usize) -> Result<ReleaseSources, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn release_tags(release_id: usize) -> Result<ReleaseTags, String> { 

    pub fn release_tags(release_id: usize) -> Result<ReleaseTags, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn release_related_tags(release_id: usize, tag_names: &str) -> Result<ReleaseRelatedTags, String> { 

    pub fn release_related_tags(release_id: usize, tag_names: &str) -> Result<ReleaseRelatedTags, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn release_tables(release_id: usize) -> Result<ReleaseTables, String> { 

    pub fn release_tables(release_id: usize) -> Result<ReleaseTables, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn series(series_id: &str) -> Result<Series, String> { 

    pub fn series(series_id: &str) -> Result<Series, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn series_json(series_id: &str) -> Result<String, String> {

    pub fn series_json(series_id: &str) -> Result<String, Error> {

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn series_categories(series_id: &str) -> Result<Categories, String> { 

    pub fn series_categories(series_id: &str) -> Result<Categories, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn series_observations(series_id: &str) -> Result<SeriesObservations, String> { 

    pub fn series_observations(series_id: &str) -> Result<SeriesObservations, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn series_observations_json(series_id: &str) -> Result<String, String> {

    pub fn series_observations_json(series_id: &str) -> Result<String, Error> {

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn series_release(series_id: &str) -> Result<SeriesRelease, String> { 

    pub fn series_release(series_id: &str) -> Result<SeriesRelease, Error>{ 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn series_search(search_text: &str) -> Result<SeriesSearch, String> { 

    pub fn series_search(search_text: &str) -> Result<SeriesSearch, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn series_search_tags(series_search_text: &str) -> Result<SeriesSearchTags, String> { 

    pub fn series_search_tags(series_search_text: &str) -> Result<SeriesSearchTags, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn series_search_related_tags(series_search_text: &str, tag_names: &str) -> Result<SeriesSearchRelatedTags, String> { 

    pub fn series_search_related_tags(series_search_text: &str, tag_names: &str) -> Result<SeriesSearchRelatedTags, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn series_tags(series_id: &str) -> Result<SeriesTags, String> { 

    pub fn series_tags(series_id: &str) -> Result<SeriesTags, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn series_updates() -> Result<SeriesUpdates, String> { 

    pub fn series_updates() -> Result<SeriesUpdates, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn series_vintagedates(series_id: &str) -> Result<SeriesVintageDates, String> { 

    pub fn series_vintagedates(series_id: &str) -> Result<SeriesVintageDates, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn sources() -> Result<Sources, String> { 

    pub fn sources() -> Result<Sources, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn source(source_id: usize) -> Result<ReleaseSources, String> { 

    pub fn source(source_id: usize) -> Result<ReleaseSources, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn source_releases(source_id: usize) -> Result<SourceReleases, String> { 

    pub fn source_releases(source_id: usize) -> Result<SourceReleases, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn tags() -> Result<Tags, String> { 

    pub fn tags() -> Result<Tags, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn related_tags(tag_names: &str) -> Result<Tags, String> { 

    pub fn related_tags(tag_names: &str) -> Result<Tags, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))

    pub fn tags_series(tag_names: &str) -> Result<TagsSeries, String> { 

    /// or
    /// ``` 
    /// Fred::tags_series("cpi;usa;nation").unwrap().to_string()
    /// ```
    pub fn tags_series(tag_names: &str) -> Result<TagsSeries, Error> { 

        );
        serde_json::from_str(&response).map_err(|_| response)
    }

        )?;
        serde_json::from_str(&response).map_err(|err| json(err))
   } 

fn response(url: &str, keyvals: Vec<String>) -> String {
    json(&request_str(url, keyvals))

pub fn json<T: Display>(err: T) -> Error {
    failed_to_parse_json(&err.to_string())

fn json(req: &str) -> String {
    let json = reqwest::blocking::get(req)
        .unwrap()
        .text_with_charset("utf-8")
        .unwrap();
    fs::write("temp.json", &json).unwrap();
    json

/// Construct a request and return the response.
fn response(url: &str, keyvals: Vec<String>) -> Result<String, Error> {
    let request = request_str(url, keyvals);
    let  blocking_response = match reqwest::blocking::get(&request) {
        Ok(response) => response,
        Err(err) => {
            return Err(failed_http_request(&err.to_string()))
        },
    };
    let response = match blocking_response.text_with_charset("utf-8") {
        Ok(response) => {
            response
        },
        Err(err) => {
            return Err(failed_http_request(&err.to_string()))
        },
    };
    let first_line = response.lines().next().unwrap();
    if first_line.contains("error_code") {
        return Err(failed_http_request(&response))
    }
    Ok(response)

    fn to_keytree(&self) -> KeyTreeString {

    fn keytree(&self) -> KeyTreeString {

            let sis = series_item.to_keytree();

            let sis = series_item.keytree();

            s.push_keyvalue(0, "series", &i.to_string());
            s.push_keytree(1, series.to_keytree());

            s.push_value(0, "series", &i.to_string());
            s.push_keytree(1, series.keytree());

    fn to_keytree(&self) -> KeyTreeString {

    fn keytree(&self) -> KeyTreeString {

        s.push_keyvalue(1, "realtime_start", &self.realtime_start);
        s.push_keyvalue(1, "realtime_end", &self.realtime_end);
        s.push_keytree(1, self.seriess.to_keytree());

        s.push_value(1, "realtime_start", &self.realtime_start);
        s.push_value(1, "realtime_end", &self.realtime_end);
        s.push_keytree(1, self.seriess.keytree());

        let s = self.to_keytree();

        let s = self.keytree();

    pub fn to_keytree(&self) -> KeyTreeString {

    pub fn keytree(&self) -> KeyTreeString {

        s.push_keyvalue(1, "id", &self.id);
        s.push_keyvalue(1, "realtime_start", &self.realtime_start);
        s.push_keyvalue(1, "realtime_end", &self.realtime_end);
        s.push_keyvalue(1, "title", &self.title);
        s.push_keyvalue(1, "observation_start", &self.observation_start);
        s.push_keyvalue(1, "observation_end", &self.observation_end);
        s.push_keyvalue(1, "frequency", &self.frequency);
        s.push_keyvalue(1, "units", &self.units);
        s.push_keyvalue(1, "units_short", &self.units_short);
        s.push_keyvalue(1, "seasonal_adjustment", &self.seasonal_adjustment);
        s.push_keyvalue(1, "last_updated", &self.last_updated);
        s.push_keyvalue(1, "notes", "(see JSON data for notes)");

        s.push_value(1, "id", &self.id);
        s.push_value(1, "realtime_start", &self.realtime_start);
        s.push_value(1, "realtime_end", &self.realtime_end);
        s.push_value(1, "title", &self.title);
        s.push_value(1, "observation_start", &self.observation_start);
        s.push_value(1, "observation_end", &self.observation_end);
        s.push_value(1, "frequency", &self.frequency);
        s.push_value(1, "units", &self.units);
        s.push_value(1, "units_short", &self.units_short);
        s.push_value(1, "seasonal_adjustment", &self.seasonal_adjustment);
        s.push_value(1, "last_updated", &self.last_updated);
        s.push_value(1, "notes", "(see JSON data for notes)");

        let s = self.to_keytree();

        let s = self.keytree();

use std::fmt;
#[derive(Debug)]
pub struct Error(String);
impl fmt::Display for Error {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "{}", self.0)
    }
}
///
pub fn failed_to_parse_json(msg: &str) -> Error {
    Error(format!(
        "[fred_app:01] Failed to parse JSON with error [{}].",
        msg,
    ))
}
///
pub fn failed_http_request(msg: &str) -> Error {
    Error(format!(
        "[fred_api:02]] Http request failed with error [{}].",
        msg,
    ))
}

                    GNU GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007
 Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.
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    copy of the Corresponding Source for all the software in the
    product that is covered by this License, on a durable physical
    medium customarily used for software interchange, for a price no
    more than your reasonable cost of physically performing this
    conveying of source, or (2) access to copy the
    Corresponding Source from a network server at no charge.
    c) Convey individual copies of the object code with a copy of the
    written offer to provide the Corresponding Source.  This
    alternative is allowed only occasionally and noncommercially, and
    only if you received the object code with such an offer, in accord
    with subsection 6b.
    d) Convey the object code by offering access from a designated
    place (gratis or for a charge), and offer equivalent access to the
    Corresponding Source in the same way through the same place at no
    further charge.  You need not require recipients to copy the
    Corresponding Source along with the object code.  If the place to
    copy the object code is a network server, the Corresponding Source
    may be on a different server (operated by you or a third party)
    that supports equivalent copying facilities, provided you maintain
    clear directions next to the object code saying where to find the
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    Corresponding Source, you remain obligated to ensure that it is
    available for as long as needed to satisfy these requirements.
    e) Convey the object code using peer-to-peer transmission, provided
    you inform other peers where the object code and Corresponding
    Source of the work are being offered to the general public at no
    charge under subsection 6d.
  A separable portion of the object code, whose source code is excluded
from the Corresponding Source as a System Library, need not be
included in conveying the object code work.
  A "User Product" is either (1) a "consumer product", which means any
tangible personal property which is normally used for personal, family,
or household purposes, or (2) anything designed or sold for incorporation
into a dwelling.  In determining whether a product is a consumer product,
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  "Installation Information" for a User Product means any methods,
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and execute modified versions of a covered work in that User Product from
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code is in no case prevented or interfered with solely because
modification has been made.
  If you convey an object code work under this section in, or with, or
specifically for use in, a User Product, and the conveying occurs as
part of a transaction in which the right of possession and use of the
User Product is transferred to the recipient in perpetuity or for a
fixed term (regardless of how the transaction is characterized), the
Corresponding Source conveyed under this section must be accompanied
by the Installation Information.  But this requirement does not apply
if neither you nor any third party retains the ability to install
modified object code on the User Product (for example, the work has
been installed in ROM).
  The requirement to provide Installation Information does not include a
requirement to continue to provide support service, warranty, or updates
for a work that has been modified or installed by the recipient, or for
the User Product in which it has been modified or installed.  Access to a
network may be denied when the modification itself materially and
adversely affects the operation of the network or violates the rules and
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  Corresponding Source conveyed, and Installation Information provided,
in accord with this section must be in a format that is publicly
documented (and with an implementation available to the public in
source code form), and must require no special password or key for
unpacking, reading or copying.
  7. Additional Terms.
  "Additional permissions" are terms that supplement the terms of this
License by making exceptions from one or more of its conditions.
Additional permissions that are applicable to the entire Program shall
be treated as though they were included in this License, to the extent
that they are valid under applicable law.  If additional permissions
apply only to part of the Program, that part may be used separately
under those permissions, but the entire Program remains governed by
this License without regard to the additional permissions.
  When you convey a copy of a covered work, you may at your option
remove any additional permissions from that copy, or from any part of
it.  (Additional permissions may be written to require their own
removal in certain cases when you modify the work.)  You may place
additional permissions on material, added by you to a covered work,
for which you have or can give appropriate copyright permission.
  Notwithstanding any other provision of this License, for material you
add to a covered work, you may (if authorized by the copyright holders of
that material) supplement the terms of this License with terms:
    a) Disclaiming warranty or limiting liability differently from the
    terms of sections 15 and 16 of this License; or
    b) Requiring preservation of specified reasonable legal notices or
    author attributions in that material or in the Appropriate Legal
    Notices displayed by works containing it; or
    c) Prohibiting misrepresentation of the origin of that material, or
    requiring that modified versions of such material be marked in
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    d) Limiting the use for publicity purposes of names of licensors or
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    e) Declining to grant rights under trademark law for use of some
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    f) Requiring indemnification of licensors and authors of that
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    any liability that these contractual assumptions directly impose on
    those licensors and authors.
  All other non-permissive additional terms are considered "further
restrictions" within the meaning of section 10.  If the Program as you
received it, or any part of it, contains a notice stating that it is
governed by this License along with a term that is a further
restriction, you may remove that term.  If a license document contains
a further restriction but permits relicensing or conveying under this
License, you may add to a covered work material governed by the terms
of that license document, provided that the further restriction does
not survive such relicensing or conveying.
  If you add terms to a covered work in accord with this section, you
must place, in the relevant source files, a statement of the
additional terms that apply to those files, or a notice indicating
where to find the applicable terms.
  Additional terms, permissive or non-permissive, may be stated in the
form of a separately written license, or stated as exceptions;
the above requirements apply either way.
  8. Termination.
  You may not propagate or modify a covered work except as expressly
provided under this License.  Any attempt otherwise to propagate or
modify it is void, and will automatically terminate your rights under
this License (including any patent licenses granted under the third
paragraph of section 11).
  However, if you cease all violation of this License, then your
license from a particular copyright holder is reinstated (a)
provisionally, unless and until the copyright holder explicitly and
finally terminates your license, and (b) permanently, if the copyright
holder fails to notify you of the violation by some reasonable means
prior to 60 days after the cessation.
  Moreover, your license from a particular copyright holder is
reinstated permanently if the copyright holder notifies you of the
violation by some reasonable means, this is the first time you have
received notice of violation of this License (for any work) from that
copyright holder, and you cure the violation prior to 30 days after
your receipt of the notice.
  Termination of your rights under this section does not terminate the
licenses of parties who have received copies or rights from you under
this License.  If your rights have been terminated and not permanently
reinstated, you do not qualify to receive new licenses for the same
material under section 10.
  9. Acceptance Not Required for Having Copies.
  You are not required to accept this License in order to receive or
run a copy of the Program.  Ancillary propagation of a covered work
occurring solely as a consequence of using peer-to-peer transmission
to receive a copy likewise does not require acceptance.  However,
nothing other than this License grants you permission to propagate or
modify any covered work.  These actions infringe copyright if you do
not accept this License.  Therefore, by modifying or propagating a
covered work, you indicate your acceptance of this License to do so.
  10. Automatic Licensing of Downstream Recipients.
  Each time you convey a covered work, the recipient automatically
receives a license from the original licensors, to run, modify and
propagate that work, subject to this License.  You are not responsible
for enforcing compliance by third parties with this License.
  An "entity transaction" is a transaction transferring control of an
organization, or substantially all assets of one, or subdividing an
organization, or merging organizations.  If propagation of a covered
work results from an entity transaction, each party to that
transaction who receives a copy of the work also receives whatever
licenses to the work the party's predecessor in interest had or could
give under the previous paragraph, plus a right to possession of the
Corresponding Source of the work from the predecessor in interest, if
the predecessor has it or can get it with reasonable efforts.
  You may not impose any further restrictions on the exercise of the
rights granted or affirmed under this License.  For example, you may
not impose a license fee, royalty, or other charge for exercise of
rights granted under this License, and you may not initiate litigation
(including a cross-claim or counterclaim in a lawsuit) alleging that
any patent claim is infringed by making, using, selling, offering for
sale, or importing the Program or any portion of it.
  11. Patents.
  A "contributor" is a copyright holder who authorizes use under this
License of the Program or a work on which the Program is based.  The
work thus licensed is called the contributor's "contributor version".
  A contributor's "essential patent claims" are all patent claims
owned or controlled by the contributor, whether already acquired or
hereafter acquired, that would be infringed by some manner, permitted
by this License, of making, using, or selling its contributor version,
but do not include claims that would be infringed only as a
consequence of further modification of the contributor version.  For
purposes of this definition, "control" includes the right to grant
patent sublicenses in a manner consistent with the requirements of
this License.
  Each contributor grants you a non-exclusive, worldwide, royalty-free
patent license under the contributor's essential patent claims, to
make, use, sell, offer for sale, import and otherwise run, modify and
propagate the contents of its contributor version.
  In the following three paragraphs, a "patent license" is any express
agreement or commitment, however denominated, not to enforce a patent
(such as an express permission to practice a patent or covenant not to
sue for patent infringement).  To "grant" such a patent license to a
party means to make such an agreement or commitment not to enforce a
patent against the party.
  If you convey a covered work, knowingly relying on a patent license,
and the Corresponding Source of the work is not available for anyone
to copy, free of charge and under the terms of this License, through a
publicly available network server or other readily accessible means,
then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
patent license for this particular work, or (3) arrange, in a manner
consistent with the requirements of this License, to extend the patent
license to downstream recipients.  "Knowingly relying" means you have
actual knowledge that, but for the patent license, your conveying the
covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
country that you have reason to believe are valid.
  If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
covered work, and grant a patent license to some of the parties
receiving the covered work authorizing them to use, propagate, modify
or convey a specific copy of the covered work, then the patent license
you grant is automatically extended to all recipients of the covered
work and works based on it.
  A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is
conditioned on the non-exercise of one or more of the rights that are
specifically granted under this License.  You may not convey a covered
work if you are a party to an arrangement with a third party that is
in the business of distributing software, under which you make payment
to the third party based on the extent of your activity of conveying
the work, and under which the third party grants, to any of the
parties who would receive the covered work from you, a discriminatory
patent license (a) in connection with copies of the covered work
conveyed by you (or copies made from those copies), or (b) primarily
for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.
  Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.
  12. No Surrender of Others' Freedom.
  If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License.  If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all.  For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
  13. Use with the GNU Affero General Public License.
  Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work.  The terms of this
License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.
  14. Revised Versions of this License.
  The Free Software Foundation may publish revised and/or new versions of
the GNU General Public License from time to time.  Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
  Each version is given a distinguishing version number.  If the
Program specifies that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation.  If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.
  If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
  Later license versions may give you additional or different
permissions.  However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
  15. Disclaimer of Warranty.
  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
  16. Limitation of Liability.
  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
  17. Interpretation of Sections 15 and 16.
  If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
                     END OF TERMS AND CONDITIONS
            How to Apply These Terms to Your New Programs
  If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
  To do so, attach the following notices to the program.  It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
  If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
    <program>  Copyright (C) <year>  <name of author>
    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License.  Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
  You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
  The GNU General Public License does not permit incorporating your program
into proprietary programs.  If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library.  If this is what you want to do, use the GNU Lesser General
Public License instead of this License.  But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.