From 3459ee85fc3ebeb28b426843b179d017160184f2 Mon Sep 17 00:00:00 2001
From: Christian Cunningham <cc@localhost>
Date: Sat, 5 Feb 2022 02:28:47 -0700
Subject: Added data-to-string functions

---
 src/lib/strings.c | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)

(limited to 'src/lib/strings.c')

diff --git a/src/lib/strings.c b/src/lib/strings.c
index 8b83c9f..53caaec 100644
--- a/src/lib/strings.c
+++ b/src/lib/strings.c
@@ -1,3 +1,4 @@
+#include <lib/kmem.h>
 #include <lib/strings.h>
 
 unsigned long strlen(string_t s)
@@ -32,3 +33,77 @@ unsigned char strcmpn(string_t a, string_t b, unsigned int n)
 	}
 	return a[idx] == b[idx];
 }
+
+char* zhex32_to_str(unsigned long value)
+{
+	char* data = kcalloc(9);
+	char tmp = 0;
+	char isz = -1;
+	for (int i = 0; i < 8; i++) {
+		tmp = (value >> 4*(8-i-1))&0xF;
+		if (isz == 0xFF && tmp != 0)
+			isz = i;
+		if(tmp > 0x9)
+			tmp += 7;
+		tmp += 0x30;
+		data[i] = tmp;
+	}
+	return data+isz;
+}
+
+char* hex32_to_str(unsigned long value)
+{
+	char* data = kcalloc(9);
+	char tmp = 0;
+	for (int i = 0; i < 8; i++) {
+		tmp = (value >> 4*(8-i-1))&0xF;
+		if(tmp > 0x9)
+			tmp += 7;
+		tmp += 0x30;
+		data[i] = tmp;
+	}
+	return data;
+}
+
+char* u32_to_str(unsigned long value)
+{
+	unsigned long t = value;
+	unsigned long c;
+	char* data = kcalloc(11);
+	char* dptr = data + 9;
+	for (int i = 0; i <= 10; i++) {
+		c = t%10;
+		*dptr = 0x30 + (c&0xF);
+		t /= 10;
+		if (t==0)
+			break;
+		dptr -= 1;
+	}
+	return dptr;
+}
+
+char* s32_to_str(unsigned long value)
+{
+	long t = value;
+	unsigned long c;
+	char is_neg = 0;
+	if (t < 0) {
+		t = -t;
+		is_neg = 1;
+	}
+	char* data = kcalloc(12);
+	char* dptr = data + 10;
+	for (int i = 0; i <= 10; i++) {
+		c = t%10;
+		*dptr = 0x30 + (c&0xF);
+		t /= 10;
+		if (t==0)
+			break;
+		dptr -= 1;
+	}
+	if (is_neg) {
+		dptr -= 1;
+		*dptr = '-';
+	}
+	return dptr;
+}
-- 
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