From 4ae6a06d94b228a5eb67c8473131a791e310c233 Mon Sep 17 00:00:00 2001
From: Cliff Click <cliffc@acm.org>
Date: Sat, 24 Oct 2026 15:25:58 -0700
Subject: Rename modules chapter to 28a

---
 chapter-modules/src/main/smp/sys/aryu8.smp | 87 ------------------------------
 1 file changed, 87 deletions(-)
 delete mode 100644 chapter-modules/src/main/smp/sys/aryu8.smp

(limited to 'chapter-modules/src/main/smp/sys/aryu8.smp')

diff --git a/chapter-modules/src/main/smp/sys/aryu8.smp b/chapter-modules/src/main/smp/sys/aryu8.smp
deleted file mode 100644
index 21cf920b..00000000
--- a/chapter-modules/src/main/smp/sys/aryu8.smp
+++ /dev/null
@@ -1,87 +0,0 @@
-
-// Ary/Vector of u8s - a resizable array of bytes.
-struct aryu8 {
-    u32 !len = 0;
-    u8[] !buf;
-
-    new aryu8 = { -> buf = new u8[1]; };
-
-    // Grow as needed
-    val _grow = { int len2 ->
-        if( len+len2 < buf# ) return self;
-        int newlen = buf# * 2;
-        while( len+len2 >= newlen ) newlen *= 2;
-        u8[] !buf2 = new u8[newlen];
-        ary.copy(buf2,0,buf,0,buf#);
-        buf = buf2;
-        self;
-    };
-
-    val clear = { -> len = 0; self; };
-
-    // Add a character to aryu8
-    val add = { u8 c ->
-        _grow(1).buf[len++] = c;
-        self;
-    };
-
-    // Add all of a plain array to the aryu8
-    val addAry = { u8[~] xs ->
-        _grow(xs#);
-        ary.copy(buf,len,xs,0,xs#);
-        len += xs#;
-        self;
-    };
-
-    // Remove x bytes from the tail.
-    val undo = { int x ->
-        len = len >= x ? len-x : 0;
-        self;
-    };
-
-    // Print ASCII number into aryu8
-    val num = { i64 x ->
-        if( !x ) { add('0'); return self; }
-        if( x < 0 ) { add('-'); x = -x; }
-        i64 ten = 1, log = 0;
-        while( ten <= x ) { ten *= 10; log++; }
-        for( int i=0; i<log; i++ ) {
-            ten /= 10;
-            i64 q = x/ten;
-            u8 digit = q+'0';
-            add(digit);
-            x -= q*ten;
-        }
-        self;
-    };
-
-    // Write to fd, returns the number of bytes written (len).
-    val write = { i32 fd ->
-        i64 ptr = buf; // Cast buffer pointer to i64 for native C call
-        libc.write(fd,ptr,len);
-    };
-};
-
-
-// Parse one integer, ignore trailing data; returns 0 with an empty string.
-// If you want a more robust parsing, use the `scan` class
-val atoi = { u8[~] str ->
-    int x = 0;
-    while( x < str# && str[x] <= ' ' ) x++;
-    if( x == str# ) return 0;
-    bool neg = false;
-    if( str[x]=='-' ) { neg=true; x++; }
-    i64 n = 0;
-    while( x < str# && '0' <= str[x] <= '9' )
-        n = n*10 + str[x++]-'0';
-    return neg ? -n : n;
-};
-
-// Zero-terminate string for libc strings.  No error checking, just copies and
-// appends a zero.
-{ u8[~] -> u8[] } str0 = { u8[~] str ->
-  u8[] !strz = new u8[str#+1];
-  ary.copy(strz,0,str,0,str#);
-  strz[str#] = '\0';
-  strz;
-};
-- 
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