Add info; update

src/lib.rs

@@ -2,7 +2,6 @@ use std::{
     cmp::{max, min},
     ffi::{CStr, CString, OsStr, c_void},
     fs,
-    hash::Hash,
     os::unix::ffi::OsStrExt,
     path::Path,
     ptr::{self, NonNull},
@@ -12,7 +11,7 @@ use std::{
 use ::typst::{
     Document,
     layout::{Abs, FrameItem, Page, Point, Rect},
-    model::{Destination, Numbering, NumberingPattern},
+    model::{Destination, Numbering},
     text::{Glyph, TextItem},
 };
 use cairo::{Format, ImageSurface};
@@ -21,15 +20,20 @@ use crate::{
     typst::FrameItemIterator,
     zathura::{
         GiraraList, ZathuraResult, cairo_t, girara_list_t, zathura_document_get_data,
-        zathura_document_get_path, zathura_document_s, zathura_document_set_data,
-        zathura_document_set_number_of_pages,
+        zathura_document_get_path, zathura_document_information_entry_list_new,
+        zathura_document_information_entry_new, zathura_document_information_entry_t,
+        zathura_document_information_type_e_ZATHURA_DOCUMENT_INFORMATION_AUTHOR,
+        zathura_document_information_type_e_ZATHURA_DOCUMENT_INFORMATION_CREATION_DATE,
+        zathura_document_information_type_e_ZATHURA_DOCUMENT_INFORMATION_KEYWORDS,
+        zathura_document_information_type_e_ZATHURA_DOCUMENT_INFORMATION_PRODUCER,
+        zathura_document_information_type_e_ZATHURA_DOCUMENT_INFORMATION_TITLE, zathura_document_s,
+        zathura_document_set_data, zathura_document_set_number_of_pages,
         zathura_link_destination_type_e_ZATHURA_LINK_DESTINATION_UNKNOWN,
         zathura_link_destination_type_e_ZATHURA_LINK_DESTINATION_XYZ, zathura_link_free,
         zathura_link_new, zathura_link_target_s, zathura_link_type_e_ZATHURA_LINK_GOTO_DEST,
         zathura_link_type_e_ZATHURA_LINK_GOTO_REMOTE, zathura_link_type_e_ZATHURA_LINK_URI,
         zathura_page_get_document, zathura_page_get_index, zathura_page_set_data,
-        zathura_page_set_height, zathura_page_set_width, zathura_page_t, zathura_plugin_error_e,
-        zathura_rectangle_s,
+        zathura_page_set_height, zathura_page_set_width, zathura_page_t, zathura_rectangle_s,
     },
 };
 
@@ -54,7 +58,7 @@ pub static zathura_plugin_6_7: zathura::zathura_plugin_definition_s =
             document_save_as: Some(document_save_as),
             document_attachments_get: None,
             document_attachment_save: None,
-            document_get_information: None, // TODO
+            document_get_information: Some(document_get_information),
             page_init: Some(page_init),
             page_clear: Some(page_clear),
             page_search_text: None, // TODO?
@@ -98,6 +102,71 @@ unsafe extern "C" fn document_free(_: *mut zathura_document_s, data: *mut c_void
     ZathuraResult::OK
 }
 
+unsafe extern "C" fn document_get_information(
+    _: *mut zathura_document_s,
+    doc: *mut c_void,
+    res: *mut ZathuraResult,
+) -> *mut girara_list_t {
+    let res = if let Some(mut r) = NonNull::new(res) {
+        unsafe {
+            r.write(ZathuraResult::Unknown);
+            r.as_mut()
+        }
+    } else {
+        &mut ZathuraResult::OK
+    };
+
+    let doc = unsafe { &mut *(doc as *mut TypstDocument) };
+    let i = &doc.doc.info;
+    let mut lst = unsafe {
+        GiraraList::<zathura_document_information_entry_t>::from_raw(
+            zathura_document_information_entry_list_new(),
+        )
+    };
+    [
+        (
+            zathura_document_information_type_e_ZATHURA_DOCUMENT_INFORMATION_TITLE,
+            i.title.clone().unwrap_or_default().to_string(),
+        ),
+        (
+            zathura_document_information_type_e_ZATHURA_DOCUMENT_INFORMATION_AUTHOR,
+            i.author.join(", "),
+        ),
+        (
+            zathura_document_information_type_e_ZATHURA_DOCUMENT_INFORMATION_KEYWORDS,
+            i.keywords.join(", "),
+        ),
+        (
+            zathura_document_information_type_e_ZATHURA_DOCUMENT_INFORMATION_CREATION_DATE,
+            i.date.unwrap_or_default().map_or(String::new(), |d| {
+                d.display(Default::default())
+                    .expect("Defaults do the right thing")
+                    .to_string()
+            }),
+        ),
+        (
+            zathura_document_information_type_e_ZATHURA_DOCUMENT_INFORMATION_PRODUCER,
+            "Typst (via zathura-plugin-typst)".to_owned(),
+        ),
+    ]
+    .into_iter()
+    .filter(|(_, st)| !st.is_empty())
+    .map(|(ty, st)| {
+        unsafe extern "C" {
+            safe fn calloc(n: usize, s: usize) -> *mut c_void;
+        }
+        let st_m = calloc(st.len() + 1, 1);
+        unsafe { slice::from_raw_parts_mut(st_m as *mut u8, st.len()) }
+            .copy_from_slice(st.as_bytes());
+        (ty, st_m as *const i8)
+    })
+    .for_each(|(ty, st)| {
+        unsafe { lst.append_allocated(zathura_document_information_entry_new(ty, st)) };
+    });
+    *res = ZathuraResult::OK;
+    lst.into_raw()
+}
+
 unsafe extern "C" fn document_save_as(
     _: *mut zathura_document_s,
     data: *mut c_void,