From 9695ea005d4af93dcd60f74f10fd3c54499a182f Mon Sep 17 00:00:00 2001
From: Nicholas Noll <nbnoll@eml.cc>
Date: Thu, 11 Nov 2021 16:31:58 -0800
Subject: chore: split up base library into individual files for smaller
 binaries

---
 sys/base/string/append.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 sys/base/string/append.c

(limited to 'sys/base/string/append.c')

diff --git a/sys/base/string/append.c b/sys/base/string/append.c
new file mode 100644
index 0000000..d4d0396
--- /dev/null
+++ b/sys/base/string/append.c
@@ -0,0 +1,53 @@
+#include "internal.h"
+
+// append will append the given null terminated c string to the string data
+// structure. this variant can append a substring of length len of the given
+// string to our buffer. the result is reallocated if not enough room is present
+// in the buffer.
+int
+str·appendlen(string *s, vlong n, const byte* b)
+{
+    /*
+    bl = strlen(b);
+    if (n > bl) panicf("attempted to make a substring longer than string");
+    */
+
+    str·grow(s, n);
+    if(*s == nil)
+        return 0;
+
+    Hdr* h = (Hdr*)(*s - sizeof(Hdr));
+
+    memcpy(*s + str·len(*s), b, n);
+    h->len += n;
+   (*s)[h->len] = '\0';
+
+   return n;
+}
+
+// append will append the given null terminated c string to the string data
+// structure. this variant will append the entire string.
+int
+str·append(string *s, const byte* b)
+{
+    return str·appendlen(s, strlen(b), b);
+}
+
+// appendbyte will append the given byte to our string.
+// NOTE: as the byte is on the stack, it is not null-terminated.
+// can not pass to the above functions.
+int
+str·appendbyte(string *s, const byte b)
+{
+    str·grow(s, 1);
+    if(*s == nil)
+        return 0;
+
+    Hdr* h = (Hdr*)(*s - sizeof(Hdr));
+
+    *(*s + str·len(*s)) = b;
+    h->len++;
+    (*s)[h->len] = '\0'; // NOTE: I don't think an explicit zero is required..?
+
+    return 1;
+}
-- 
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