Add bibliography, references and settings placeholders

Cargo.lock

@@ -5,6 +5,14 @@ name = "adler32"
 version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "aho-corasick"
+version = "0.7.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "memchr 2.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "ansi_term"
 version = "0.11.0"
@@ -182,6 +190,11 @@ name = "linked-hash-map"
 version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "memchr"
+version = "2.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "minify"
 version = "1.1.1"
@@ -308,6 +321,17 @@ dependencies = [
  "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "regex"
+version = "1.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "aho-corasick 0.7.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "memchr 2.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex-syntax 0.6.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "thread_local 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "regex-syntax"
 version = "0.6.18"
@@ -358,12 +382,14 @@ dependencies = [
 
 [[package]]
 name = "snekdown"
-version = "0.7.0"
+version = "0.8.0"
 dependencies = [
  "chrono 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "crossbeam-utils 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "htmlescape 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "minify 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 1.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "structopt 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "syntect 4.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "termion 1.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -456,6 +482,14 @@ dependencies = [
  "unicode-width 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "thread_local"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "time"
 version = "0.1.43"
@@ -542,6 +576,7 @@ dependencies = [
 
 [metadata]
 "checksum adler32 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "5d2e7343e7fc9de883d1b0341e0b13970f764c14101234857d2ddafa1cb1cac2"
+"checksum aho-corasick 0.7.10 (registry+https://github.com/rust-lang/crates.io-index)" = "8716408b8bc624ed7f65d223ddb9ac2d044c0547b6fa4b0d554f3a9540496ada"
 "checksum ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
 "checksum atty 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)" = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
 "checksum autocfg 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d"
@@ -567,6 +602,7 @@ dependencies = [
 "checksum libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)" = "9457b06509d27052635f90d6466700c65095fdf75409b3fbdd903e988b886f49"
 "checksum line-wrap 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "f30344350a2a51da54c1d53be93fade8a237e545dbcc4bdbe635413f2117cab9"
 "checksum linked-hash-map 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8dd5a6d5999d9907cda8ed67bbd137d3af8085216c2ac62de5be860bd41f304a"
+"checksum memchr 2.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3728d817d99e5ac407411fa471ff9800a778d88a24685968b36824eaf4bee400"
 "checksum minify 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2ef7c582bd7587da887914eaf294897e82f2f5c98b741f137f2a918cd26a885b"
 "checksum miniz_oxide 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "aa679ff6578b1cddee93d7e82e263b94a575e0bfced07284eb0c037c1d2416a5"
 "checksum num-integer 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)" = "3f6ea62e9d81a77cd3ee9a2a5b9b609447857f3d358704331e4ef39eb247fcba"
@@ -582,6 +618,7 @@ dependencies = [
 "checksum quote 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)" = "54a21852a652ad6f610c9510194f398ff6f8692e334fd1145fed931f7fbe44ea"
 "checksum redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)" = "2439c63f3f6139d1b57529d16bc3b8bb855230c8efcc5d3a896c8bea7c3b1e84"
 "checksum redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7e891cfe48e9100a70a3b6eb652fef28920c117d366339687bd5576160db0f76"
+"checksum regex 1.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "9c3780fcf44b193bc4d09f36d2a3c87b251da4a046c87795a0d35f4f927ad8e6"
 "checksum regex-syntax 0.6.18 (registry+https://github.com/rust-lang/crates.io-index)" = "26412eb97c6b088a6997e05f69403a802a92d520de2f8e63c2b65f9e0f47c4e8"
 "checksum ryu 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "ed3d612bc64430efeb3f7ee6ef26d590dce0c43249217bddc62112540c7941e1"
 "checksum safemem 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ef703b7cb59335eae2eb93ceb664c0eb7ea6bf567079d843e09420219668e072"
@@ -597,6 +634,7 @@ dependencies = [
 "checksum syntect 4.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "83b43a6ca1829ccb0c933b615c9ea83ffc8793ae240cecbd15119b13d741161d"
 "checksum termion 1.5.5 (registry+https://github.com/rust-lang/crates.io-index)" = "c22cec9d8978d906be5ac94bceb5a010d885c626c4c8855721a4dbd20e3ac905"
 "checksum textwrap 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
+"checksum thread_local 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d40c6d1b69745a6ec6fb1ca717914848da4b44ae29d9b3080cbee91d72a69b14"
 "checksum time 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)" = "ca8a50ef2360fbd1eeb0ecd46795a87a19024eb4b53c5dc916ca1fd95fe62438"
 "checksum unicode-segmentation 1.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e83e153d1053cbb5a118eeff7fd5be06ed99153f00dbcd8ae310c5fb2b22edc0"
 "checksum unicode-width 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "caaa9d531767d1ff2150b9332433f32a24622147e5ebb1f26409d5da67afd479"

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "snekdown"
-version = "0.7.0"
+version = "0.8.0"
 authors = ["trivernis <trivernis@protonmail.com>"]
 edition = "2018"
 license-file = "LICENSE"
@@ -26,3 +26,5 @@ minify = "1.1.1"
 htmlescape = "0.3.1"
 syntect = "4.2.0"
 chrono = "0.4.11"
+regex = "1.3.9"
+lazy_static = "1.4.0"

src/format/html.rs

@@ -37,6 +37,7 @@ impl ToHtml for Line {
             Line::Ruler(ruler) => ruler.to_html(),
             Line::Anchor(anchor) => anchor.to_html(),
             Line::Centered(centered) => centered.to_html(),
+            Line::ReferenceEntry(ref_entry) => ref_entry.to_html(),
         }
     }
 }
@@ -53,6 +54,7 @@ impl ToHtml for Inline {
             Inline::Bold(bold) => bold.to_html(),
             Inline::Image(img) => img.to_html(),
             Inline::Placeholder(placeholder) => placeholder.lock().unwrap().to_html(),
+            Inline::Reference(reference) => reference.to_html(),
         }
     }
 }
@@ -421,3 +423,31 @@ impl ToHtml for Centered {
         format!("<div class='centered'>{}</div>", self.line.to_html())
     }
 }
+
+impl ToHtml for Reference {
+    fn to_html(&self) -> String {
+        if let Some(value) = &self.value {
+            value.to_html()
+        } else {
+            "Unknown reference".to_string()
+        }
+    }
+}
+
+impl ToHtml for RefValue {
+    fn to_html(&self) -> String {
+        match self {
+            RefValue::BibEntry(bib) => encode_minimal(bib.lock().unwrap().get_formatted().as_str()),
+        }
+    }
+}
+
+impl ToHtml for ReferenceEntry {
+    fn to_html(&self) -> String {
+        if let Some(val) = &self.value {
+            val.to_html()
+        } else {
+            "Unknown reference".to_string()
+        }
+    }
+}

src/parsing/elements.rs

@@ -1,3 +1,4 @@
+use crate::parsing::placeholders::BibEntry;
 use std::collections::HashMap;
 use std::sync::{Arc, Mutex};
 
@@ -58,6 +59,7 @@ pub enum Line {
     Ruler(Ruler),
     Anchor(Anchor),
     Centered(Centered),
+    ReferenceEntry(ReferenceEntry),
 }
 
 #[derive(Clone, Debug)]
@@ -66,6 +68,8 @@ pub struct Document {
     pub(crate) is_root: bool,
     pub(crate) path: Option<String>,
     pub(crate) placeholders: Vec<Arc<Mutex<Placeholder>>>,
+    pub bib_entries: HashMap<String, Arc<Mutex<BibEntry>>>,
+    pub config_settings: HashMap<String, Arc<Mutex<ConfigValue>>>,
 }
 
 #[derive(Clone, Debug)]
@@ -164,6 +168,7 @@ pub enum Inline {
     Url(Url),
     Image(Image),
     Placeholder(Arc<Mutex<Placeholder>>),
+    Reference(Reference),
 }
 
 #[derive(Clone, Debug)]
@@ -226,15 +231,56 @@ pub struct Centered {
     pub(crate) line: TextLine,
 }
 
+#[derive(Clone, Debug)]
+pub struct Reference {
+    pub(crate) value: Option<RefValue>,
+    pub(crate) metadata: Option<InlineMetadata>,
+}
+
+#[derive(Clone, Debug)]
+pub struct ReferenceEntry {
+    pub(crate) value: Option<RefValue>,
+}
+
+#[derive(Clone, Debug)]
+pub enum RefValue {
+    BibEntry(Arc<Mutex<BibEntry>>),
+}
+
+#[derive(Clone, Debug)]
+pub struct ConfigValue {
+    pub(crate) value: MetadataValue,
+}
+
+impl ConfigValue {
+    fn set_value(&mut self, value: MetadataValue) {
+        self.value = value;
+    }
+}
+
 // implementations
 
 impl Document {
+    fn get_default_config() -> HashMap<String, Arc<Mutex<ConfigValue>>> {
+        let mut config: HashMap<String, Arc<Mutex<ConfigValue>>> = HashMap::new();
+        config.insert(
+            "bib-display".to_string(),
+            Arc::new(Mutex::new(ConfigValue {
+                value: MetadataValue::String("title - author - year - (notes)".to_string()),
+            })),
+        );
+
+        config
+    }
+
     pub fn new(is_root: bool) -> Self {
         Self {
             elements: Vec::new(),
             is_root,
             path: None,
             placeholders: Vec::new(),
+            bib_entries: HashMap::new(),
+            config_settings: Self::get_default_config(),
         }
     }
 
@@ -289,6 +335,29 @@ impl Document {
 
         list
     }
+
+    pub fn set_config_param(
+        &mut self,
+        key: String,
+        value: ConfigValue,
+    ) -> Option<Arc<Mutex<ConfigValue>>> {
+        if let Some(arc_val) = self.config_settings.get(&key) {
+            arc_val.lock().unwrap().set_value(value.value);
+
+            Some(Arc::clone(&arc_val))
+        } else {
+            self.config_settings
+                .insert(key, Arc::new(Mutex::new(value)))
+        }
+    }
+
+    pub fn get_config_param(&self, key: &str) -> Option<Arc<Mutex<ConfigValue>>> {
+        if let Some(val) = self.config_settings.get(key) {
+            Some(Arc::clone(val))
+        } else {
+            None
+        }
+    }
 }
 
 impl Section {
@@ -497,4 +566,12 @@ impl InlineMetadata {
             false
         }
     }
+
+    pub fn get_string(&self, key: &str) -> Option<String> {
+        if let Some(MetadataValue::String(value)) = self.data.get(key) {
+            Some(value.clone())
+        } else {
+            None
+        }
+    }
 }

src/parsing/placeholders.rs

@@ -1,5 +1,7 @@
 use super::elements::*;
 use chrono::prelude::*;
+use regex::Regex;
+use std::sync::{Arc, Mutex, MutexGuard};
 
 macro_rules! block {
     ($inner:expr) => {
@@ -22,8 +24,67 @@ macro_rules! inline {
 
 pub(crate) trait ProcessPlaceholders {
     fn process_placeholders(&mut self);
+    fn process_definitions(&mut self);
+    fn add_bib_entry(&mut self, key: String, value: BibEntry) -> Arc<Mutex<BibEntry>>;
+    fn get_bib_entry(&self, ph: &MutexGuard<Placeholder>, key: &str) -> BibEntry;
 }
 
+const B_AUTHOR: &str = "author";
+const B_DATE: &str = "date";
+const B_URL: &str = "url";
+const B_TITLE: &str = "title";
+const B_PUBLISHER: &str = "publisher";
+const B_NOTES: &str = "notes";
+
+#[derive(Clone, Debug)]
+pub struct BibEntry {
+    key: String,
+    author: Option<String>,
+    date: Option<String>,
+    url: Option<String>,
+    title: Option<String>,
+    publisher: Option<String>,
+    notes: Option<String>,
+    display: Option<Arc<Mutex<ConfigValue>>>,
+}
+
+impl BibEntry {
+    pub fn get_formatted(&self) -> String {
+        if let Some(display) = &self.display {
+            let value = display.lock().unwrap();
+            if let MetadataValue::String(format) = &value.value {
+                let mut format = format.clone();
+                if let Some(author) = &self.author {
+                    format = format.replace("author", author);
+                }
+                if let Some(date) = &self.date {
+                    format = format.replace("date", date);
+                }
+                if let Some(url) = &self.url {
+                    format = format.replace("url", url)
+                }
+                if let Some(title) = &self.title {
+                    format = format.replace("title", title);
+                }
+                if let Some(publisher) = &self.publisher {
+                    format = format.replace("publisher", publisher);
+                }
+                if let Some(notes) = &self.notes {
+                    format = format.replace("notes", notes);
+                }
+
+                format
+            } else {
+                format!("'Invalid formatter!' {:?}", self)
+            }
+        } else {
+            format!("{:?}", self)
+        }
+    }
+}
+
+const S_VALUE: &str = "value";
+
 const P_TOC: &str = "toc";
 const P_DATE: &str = "date";
 const P_TIME: &str = "time";
@@ -32,8 +93,25 @@ const P_DATETIME: &str = "datetime";
 impl ProcessPlaceholders for Document {
     /// parses all placeholders and assigns values to them
     fn process_placeholders(&mut self) {
+        self.process_definitions();
+        lazy_static::lazy_static! {static ref RE_REF: Regex = Regex::new(r"^ref:(.*)$").unwrap();}
         self.placeholders.iter().for_each(|p| {
             let mut pholder = p.lock().unwrap();
+            if let Some(cap) = RE_REF.captures(&pholder.name) {
+                if let Some(key) = cap.get(1) {
+                    if let Some(entry) = self.bib_entries.get(key.as_str()) {
+                        pholder.value = Some(inline!(Inline::Reference(Reference {
+                            value: Some(RefValue::BibEntry(entry.clone())),
+                            metadata: pholder.metadata.clone()
+                        })))
+                    } else {
+                        pholder.value = Some(inline!(Inline::Reference(Reference {
+                            value: None,
+                            metadata: pholder.metadata.clone()
+                        })))
+                    }
+                }
+            }
             match pholder.name.to_ascii_lowercase().as_str() {
                 P_TOC => {
                     let ordered = if let Some(meta) = &pholder.metadata {
@@ -56,6 +134,89 @@ impl ProcessPlaceholders for Document {
             }
         })
     }
+
+    fn process_definitions(&mut self) {
+        lazy_static::lazy_static! {
+            static ref RE_BIB: Regex = Regex::new(r"^bib:(.*)$").unwrap();
+        }
+
+        lazy_static::lazy_static! {
+            static ref RE_SET: Regex = Regex::new(r"^set:(.*)$").unwrap();
+        }
+
+        let placeholders = self.placeholders.clone();
+        placeholders.iter().for_each(|p| {
+            let mut pholder = p.lock().unwrap();
+
+            let name = pholder.name.clone();
+            if let Some(cap) = RE_BIB.captures(&name) {
+                if let Some(key) = cap.get(1) {
+                    let key: &str = key.as_str();
+                    let entry = self.get_bib_entry(&pholder, key);
+                    let entry = self.add_bib_entry(key.to_string(), entry);
+                    pholder.value = Some(Element::Line(Box::new(Line::ReferenceEntry(
+                        ReferenceEntry {
+                            value: Some(RefValue::BibEntry(entry)),
+                        },
+                    ))));
+                }
+                return;
+            }
+
+            if let Some(cap) = RE_SET.captures(&name) {
+                if let Some(key) = cap.get(1) {
+                    let key: &str = key.as_str();
+                    pholder.value = Some(inline!(Inline::Plain(PlainText {
+                        value: "".to_string()
+                    })));
+                    if let Some(meta) = &pholder.metadata {
+                        if let Some(value) = meta.data.get(S_VALUE) {
+                            self.set_config_param(
+                                key.to_string(),
+                                ConfigValue {
+                                    value: value.clone(),
+                                },
+                            );
+                        }
+                    }
+                }
+                return;
+            }
+        });
+    }
+
+    fn add_bib_entry(&mut self, key: String, value: BibEntry) -> Arc<Mutex<BibEntry>> {
+        let arc_entry = Arc::new(Mutex::new(value));
+        self.bib_entries.insert(key, Arc::clone(&arc_entry));
+
+        arc_entry
+    }
+
+    fn get_bib_entry(&self, ph: &MutexGuard<Placeholder>, key: &str) -> BibEntry {
+        if let Some(meta) = &ph.metadata {
+            BibEntry {
+                key: key.to_string(),
+                author: meta.get_string(B_AUTHOR),
+                date: meta.get_string(B_DATE),
+                url: meta.get_string(B_URL),
+                title: meta.get_string(B_TITLE),
+                publisher: meta.get_string(B_PUBLISHER),
+                notes: meta.get_string(B_NOTES),
+                display: self.get_config_param("bib-display"),
+            }
+        } else {
+            BibEntry {
+                key: key.to_string(),
+                author: None,
+                date: None,
+                url: None,
+                title: None,
+                publisher: None,
+                notes: None,
+                display: self.get_config_param("bib-display"),
+            }
+        }
+    }
 }
 
 fn get_time_string() -> String {