initial commit

.gitignore

@@ -0,0 +1 @@
+/target

Cargo.toml

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+[package]
+name = "i3status-custom-pim"
+version = "0.1.0"
+authors = ["Martin Bley <martin@mb-oss.de>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+chrono = "0.4"

src/main.rs

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+use chrono::{Local, NaiveTime};
+use std::process::Command;
+
+fn main() {
+    const THRESHOLD_WARNING: i64 = 60;
+    const THRESHOLD_CRITICAL: i64 = 15;
+    let icon = String::from("calendar");
+
+    let mut events: Vec<String> = Vec::new();
+    let now = Local::now().time();
+    let from = now.format("%H:%M").to_string();
+
+    let khal_cmd = Command::new("khal")
+        .arg("list")
+        .arg("-df")
+        .arg("{name}")
+        .arg("-f")
+        .arg("{start-time}")
+        .arg("--notstarted")
+        .arg(&from)
+        .arg("23:59")
+        .output();
+
+    let khal_output = khal_cmd.expect("failed to run command");
+    let khal_stdout = String::from_utf8(khal_output.stdout)
+        .expect("can't read output");
+
+    let mut lines = khal_stdout.lines();
+    let dayline = lines.nth(0).expect("output seems empty");
+
+    if dayline.trim() == "Today" {
+        for e in lines {
+            events.push(e.to_string());
+        }
+    }
+
+    // get duration up to next event and set state
+    let mut state = String::from("Idle");
+
+    let mut event_remaining: i64 = 24 * 60;
+    let event_count = events.len();
+    for e in events.iter() {
+        let e_start = match NaiveTime::parse_from_str(e, "%H:%M") {
+            Ok(s) => s,
+            Err(_f) => NaiveTime::from_hms(0, 0, 0),
+        };
+        let diff = e_start - now;
+        if (diff.num_minutes() < event_remaining) && 
+            (diff.num_minutes() >= 0) {
+            event_remaining = diff.num_minutes()
+        }
+
+        if event_remaining >= 0 {
+            if event_remaining <= THRESHOLD_WARNING {
+                state = String::from("Warning");
+            }
+            if event_remaining <= THRESHOLD_CRITICAL {
+                state = String::from("Critical");
+            }
+        }
+    }
+
+    println!(
+        "{{ \"icon\": \"{}\", \"state\": \"{}\", \"text\": \"{}\" }}",
+        icon, state, event_count
+    );
+}