update libs

3 files changed, 267 insertions, 9 deletions

diff --git a/include/acpi.h b/include/acpi.h
index 637ccd2..99a446c 100644
--- a/include/acpi.h
+++ b/include/acpi.h
@@ -1,3 +1,4 @@
+#pragma once
 
 enum acpi_status {
 	ACPI_SUCCESS = 0,
diff --git a/include/lib.h b/include/lib.h
index 4271aa5..0651770 100644
--- a/include/lib.h
+++ b/include/lib.h
@@ -1,12 +1,60 @@
+#pragma once
+
+/**
+ * The  memcmp() function compares the first n bytes (each interpreted as unsigned char) of the memory
+ * areas s1 and s2.
+ */
+extern int memcmp(const void *restrict s1, const void *restrict s2, unsigned long n);
+
+/**
+ * The  memcpy()  function  copies n bytes from memory area src to memory area dest.
+ * The memory areas must not overlap.
+ */
+extern void *memcpy(void *restrict dest, const void *restrict src, unsigned long n);
+
+/**
+ * The  memmove()  function copies n bytes from memory area src to memory area dest.  The memory areas
+ * may overlap: copying takes place as though the bytes in src are first copied into a temporary array
+ * that does not overlap src or dest, and the bytes are then copied from the temporary array to dest.
+ */
+extern void *memmove(void *dest, const void *src, unsigned long n);
+
+/**
+ * The  memset() function fills the first n bytes of the memory area pointed to by s with the constant
+ * byte c.
+ */
+extern void *memset(void *restrict dest, int c, unsigned long n);
 
 /**
  * The  strcmp()  function  compares  the two strings s1 and s2.  The locale is not taken into account
  * (for a locale-aware comparison, see strcoll(3)).  The comparison is done using unsigned characters.
  */
-int strncmp(const char *s1, const char *s2, unsigned long n);
+extern int strncmp(const char *restrict s1, const char *restrict s2, unsigned long n);
 
 /**
- * The  memcmp() function compares the first n bytes (each interpreted as unsigned char) of the memory
- * areas s1 and s2.
+ * @returns 1 if c is a space
+ */
+int isspace(int c);
+
+/**
+ * @returns 1 if c is a digit (0 - 9)
  */
-int memcmp(const void *s1, const void *s2, unsigned long n);
+int isdigit(int c);
+
+
+char itoc(int i);
+int ctoi(char c);
+
+int atoi(const char* s);
+long int atol(const char* s);
+long long int atoll(const char* s);
+
+char *itoa(int n, char *buffer, int radix);
+char *ltoa(long int n, char *buffer, int radix);
+char *utoa(unsigned int n, char *buffer, int radix);
+char *ultoa(unsigned long int n, char *buffer, int radix);
+char *ftoa(float f, char *buffer);
+
+int strtoi(const char *str, char **endptr, int base);
+long int strtol(const char *str, char **endptr, int base);
+long long int strtoll(const char *str, char **endptr, int base);
diff --git a/src/lib.c b/src/lib.c
index d072f1a..a2fa3e5 100644
--- a/src/lib.c
+++ b/src/lib.c
@@ -1,14 +1,223 @@
 #include <lib.h>
 
-int strncmp(const char *lhs, const char *rhs, unsigned long n) {
+#include <stddef.h>
+
+int memcmp(const void *restrict vl, const void *restrict vr, unsigned long n) {
+    const unsigned char *l = vl, *r = vr;
+    for (; n && *l == *r; n--, l++, r++);
+    return n ? *l-*r : 0;
+}
+
+void *memcpy(void *restrict dest, const void *restrict src, unsigned long n) {
+	char *d = dest;
+    const char *s = src;
+    for (; n; n--) *d++ = *s++;
+    return dest;
+}
+
+void *memmove(void *dest, const void *src, unsigned long n) {
+    char *d = dest;
+    const char *s = src;
+
+    if (d==s) return d;
+
+    if (d<s) {
+        for (; n; n--) *d++ = *s++;
+    } else {
+        while (n) n--, d[n] = s[n];
+    }
+
+    return dest;
+}
+
+void *memset(void *restrict dest, int c, unsigned long n) {
+    unsigned char *d = dest;
+    for (; n; n--) *d++ = c;
+    return dest;
+}
+
+int strncmp(const char *restrict lhs, const char *restrict rhs, unsigned long n) {
 	const unsigned char *l=(void *)lhs, *r=(void *)rhs;
 	if (!n--) return 0;
 	for (; *l && *r && n && *l == *r ; l++, r++, n--);
 	return *l - *r;
 }
 
-int memcmp(const void *vl, const void *vr, unsigned long n) {
-    const unsigned char *l = vl, *r = vr;
-    for (; n && *l == *r; n--, l++, r++);
-    return n ? *l-*r : 0;
+int isspace(int c) {
+    switch (c) {
+        case ' ':
+        case '\t':
+        case '\v':
+        case '\f':
+        case '\r':
+        case '\n':
+            return 1;
+        default:
+            return 0;
+    }
 }
+
+int isdigit(int c) {
+    return c - '0' > -1 && c - '0' < 10;
+}
+
+
+#define ATOX(name, type) \
+    type name(const char* s) { \
+        for(; isspace(*s); s++); \
+        int neg = 0; \
+        switch (*s) { \
+            case '-': \
+                neg = 1; \
+                /* FALLTHRU */ \
+            case '+': \
+                s++; \
+                break; \
+        } \
+        type num = 0; \
+        for (; *s == '0'; s++); \
+        for (; isdigit(*s); s++) { \
+            num *= 10; \
+            num += *s - '0'; \
+        } \
+        return num * (neg ? -1 : 1); \
+    }
+
+ATOX(atoi, int)
+ATOX(atol, long int)
+ATOX(atoll, long long int)
+
+char itoc(int i) {
+	if(i < 10) {
+		return '0' + i;
+	} else {
+		return 'a' + (i - 10);
+	}
+}
+
+int ctoi(char c) {
+    if(c < 'A') {
+		return c - '0';
+	} else if(c < 'a') {
+		return c - 'A' + 10;
+	} else {
+		return c - 'a' + 10;
+	}
+}
+
+#define UXTOA(type, name) \
+    char *name(unsigned type n, char *buffer, int radix) { \
+        if (n == 0) { \
+            buffer[0] = '0'; \
+            buffer[1] = '\0'; \
+            return buffer; \
+        } \
+        char *start = buffer; \
+        for (; n; n /= radix) { \
+    		*buffer++ = itoc(n % radix); \
+    	} \
+        *buffer-- = '\0'; \
+        while(buffer > start) { \
+    		char tmp = *start; \
+    		*start++ = *buffer; \
+    		*buffer-- = tmp; \
+    	} \
+        return buffer; \
+    }
+
+UXTOA(int, utoa)
+UXTOA(long int, ultoa)
+
+#define XTOA(type, name) \
+    char *name(type n, char* buffer, int radix) { \
+        if (n == 0) { \
+            buffer[0] = '0'; \
+            buffer[1] = '\0'; \
+            return buffer; \
+        } \
+        if (n < 0) { \
+            *buffer++ = '-'; \
+            n = -n; \
+        } \
+        char *start = buffer; \
+        for (; n; n /= radix) { \
+    		*buffer++ = itoc(n % radix); \
+    	} \
+        *buffer-- = '\0'; \
+        while(buffer > start) { \
+    		char tmp = *start; \
+    		*start++ = *buffer; \
+    		*buffer-- = tmp; \
+    	} \
+        return buffer; \
+    }
+
+XTOA(int, itoa)
+XTOA(long int, ltoa)
+
+char *ftoa(float f, char *buffer) {
+    char *b = buffer;
+    if (f < 0 || f == -0)
+        *buffer++ = '-';
+    int n, i=0, k=0;
+    n = (int) f;
+    while (n > 0) {
+        f /= 10;
+        n = (int)f;
+        i++;
+    }
+    *(buffer+i) = '.';
+    f *= 10;
+    n = (int) f;
+    f -= n;
+    while ((n > 0.1) || (i > k)) {
+        if (k == i)
+            k++;
+        *(buffer+k) = '0' + n;
+        f *= 10;
+        n = (int) f;
+        f -= n;
+        k++;
+    }
+    *(buffer+k) = '\0';
+    return b;
+}
+
+#define STRTOX(name, type) \
+    type name(const char *s, char **endptr, int radix) { \
+        *endptr = NULL; \
+        for(; isspace(*s); s++); \
+        int neg = 0; \
+        switch (*s) { \
+            case '-': \
+                neg = 1; \
+                /* FALLTHRU */ \
+            case '+': \
+                s++; \
+                break; \
+        } \
+        if (!radix) { \
+            if (*s == '0') { \
+                s++; \
+                if (*s == 'x' || *s == 'X') { \
+                    s++; \
+                    radix = 16; \
+                } else { \
+                    radix = 8; \
+                } \
+            } else { \
+                radix = 10; \
+            } \
+        } \
+        for (; *s == '0'; s++, *endptr = (void*) s); \
+        type num = 0; \
+        for (; isdigit(*s); s++, *endptr = (void*) s) { \
+            num *= radix; \
+            num += *s - '0'; \
+        } \
+        return num * (neg ? -1 : 1); \
+    } 
+
+STRTOX(strtoi, int)
+STRTOX(strtol, long int)
+STRTOX(strtoll, long long int)