From da5c8173a56d5be7fa23d2b18eaba1542aa31dd6 Mon Sep 17 00:00:00 2001
From: Ben Bridle <ben@derelict.engineering>
Date: Fri, 28 Feb 2025 14:35:04 +1300
Subject: Implement inhx format

inhx is the original Intel hex format.
---
 src/formats/inhx.rs | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 src/formats/inhx.rs

(limited to 'src/formats/inhx.rs')

diff --git a/src/formats/inhx.rs b/src/formats/inhx.rs
new file mode 100644
index 0000000..e83e870
--- /dev/null
+++ b/src/formats/inhx.rs
@@ -0,0 +1,38 @@
+use crate::*;
+
+
+pub fn format_inhx(words: &[Word]) -> String {
+    let mut records = Vec::new();
+    for (i, chunk) in words.chunks(16).enumerate() {
+        records.push(data_record(chunk, (i * 16) as u16));
+    }
+    records.push(terminating_record());
+
+    let mut output = String::new();
+    for record in records {
+        output.push_str(&record.to_string());
+    }
+    return output;
+}
+
+fn data_record(words: &[Word], address: u16) -> InhxRecord {
+    let mut record = InhxRecord::new();
+    record.byte((words.len()) as u8);
+    record.be_double(address);
+    record.byte(0x00);
+    for word in words {
+        match word.bits <= 8 {
+            true => record.byte(word.value as u8),
+            false => panic!("Word '{word}' has more than 8 bits."),
+        };
+    }
+    return record;
+}
+
+fn terminating_record() -> InhxRecord {
+    let mut record = InhxRecord::new();
+    record.byte(0x00);
+    record.be_double(0x0000);
+    record.byte(0x01);
+    return record;
+}
-- 
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