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')
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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