feat(export): add Default trait bound for Handler trait
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3e68313095
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899773134f
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@ -79,7 +79,7 @@ use std::convert::From;
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use std::io::{Error as IOError, Write};
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use std::string::FromUtf8Error;
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use orgize::export::{html::Escape, DefaultHtmlHandler, HtmlHandler};
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use orgize::export::{DefaultHtmlHandler, HtmlHandler};
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use orgize::{Element, Org};
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use slugify::slugify;
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@ -103,6 +103,7 @@ impl From<FromUtf8Error> for MyError {
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}
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}
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#[derive(Default)]
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struct MyHtmlHandler(DefaultHtmlHandler);
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impl HtmlHandler<MyError> for MyHtmlHandler {
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@ -115,7 +116,7 @@ impl HtmlHandler<MyError> for MyHtmlHandler {
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w,
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"<h{0}><a id=\"{1}\" href=\"#{1}\">",
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title.level,
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slugify!(title.raw),
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slugify!(&title.raw),
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)?;
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}
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} else {
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@ -137,8 +138,7 @@ impl HtmlHandler<MyError> for MyHtmlHandler {
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fn main() -> Result<(), MyError> {
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let mut writer = Vec::new();
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let mut handler = MyHtmlHandler(DefaultHtmlHandler);
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let mut handler = MyHtmlHandler::default();
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Org::parse("* title\n*section*").html_with_handler(&mut writer, &mut handler)?;
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assert_eq!(
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@ -29,6 +29,7 @@ impl From<FromUtf8Error> for MyError {
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}
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}
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#[derive(Default)]
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struct MyHtmlHandler(DefaultHtmlHandler);
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impl HtmlHandler<MyError> for MyHtmlHandler {
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@ -70,7 +71,7 @@ fn main() -> Result<(), MyError> {
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let contents = String::from_utf8(fs::read(&args[1])?)?;
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let mut writer = Vec::new();
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let mut handler = MyHtmlHandler(DefaultHtmlHandler);
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let mut handler = MyHtmlHandler::default();
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Org::parse(&contents).html_with_handler(&mut writer, &mut handler)?;
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println!("{}", String::from_utf8(writer)?);
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@ -36,7 +36,7 @@ impl<S: AsRef<str>> fmt::Display for Escape<S> {
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}
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}
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pub trait HtmlHandler<E: From<Error>> {
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pub trait HtmlHandler<E: From<Error>>: Default {
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fn start<W: Write>(&mut self, mut w: W, element: &Element) -> Result<(), E> {
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use Element::*;
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@ -199,6 +199,7 @@ pub trait HtmlHandler<E: From<Error>> {
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}
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}
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#[derive(Default)]
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pub struct DefaultHtmlHandler;
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impl HtmlHandler<Error> for DefaultHtmlHandler {}
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@ -3,7 +3,7 @@ use std::io::{Error, Write};
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use crate::elements::{Element, Timestamp};
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use crate::export::write_datetime;
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pub trait OrgHandler<E: From<Error>> {
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pub trait OrgHandler<E: From<Error>>: Default {
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fn start<W: Write>(&mut self, mut w: W, element: &Element) -> Result<(), E> {
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use Element::*;
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@ -233,6 +233,7 @@ fn write_timestamp<W: Write>(mut w: W, timestamp: &Timestamp) -> std::io::Result
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Ok(())
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}
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#[derive(Default)]
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pub struct DefaultOrgHandler;
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impl OrgHandler<Error> for DefaultOrgHandler {}
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@ -114,6 +114,7 @@
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//! }
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//! }
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//!
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//! #[derive(Default)]
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//! struct MyHtmlHandler(DefaultHtmlHandler);
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//!
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//! impl HtmlHandler<MyError> for MyHtmlHandler {
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@ -148,7 +149,7 @@
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//!
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//! fn main() -> Result<(), MyError> {
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//! let mut writer = Vec::new();
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//! let mut handler = MyHtmlHandler(DefaultHtmlHandler);
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//! let mut handler = MyHtmlHandler::default();
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//! Org::parse("* title\n*section*").html_with_handler(&mut writer, &mut handler)?;
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//!
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//! assert_eq!(
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