1 files changed, 99 insertions, 0 deletions
diff --git a/src/util/io.cc b/src/util/io.cc
new file mode 100644
index 0000000..531bd47
--- /dev/null
+++ b/src/util/io.cc
@@ -0,0 +1,99 @@
+#include "util/io.h"
+
+namespace ov4
+{
+
+using namespace std;
+
+void atomic_print(char *s, bool ignore_wrap)
+{
+    if (ignore_wrap)
+        for (int i = 0; s[i] != 0; i++)
+            if (s[i] == '\n')
+            {
+                write(STDOUT_FILENO, s, i);
+                return;
+            }
+    write(STDOUT_FILENO, s, strlen(s));
+}
+
+void atomic_print(int x)
+{
+    char msg[LENGTH];
+    itoa(x, msg, DECIMAL);
+    atomic_print(msg);
+}
+
+void reverse(char str[], int length)
+{
+    int start = 0;
+    int end = length - 1;
+    while (start < end) {
+        char temp = str[start];
+        str[start] = str[end];
+        str[end] = temp;
+        end--;
+        start++;
+    }
+}
+
+void atomic_debug(char *s, bool ignore_wrap)
+{
+    if (verbose && GLOBAL_DEBUG) atomic_print(s, ignore_wrap);
+}
+
+void atomic_debug(int x)
+{
+    if (verbose && GLOBAL_DEBUG) atomic_print(x);
+}
+
+bool isnum(char *s)
+{
+    for (int i = 0; s[i] != 0; i++)
+        if (!isdigit(s[i]))
+            return false;
+    return true;
+}
+
+
+char *itoa(int num, char* str, int base)
+{
+    int i = 0;
+    bool isNegative = false;
+
+    /* Handle 0 explicitly, otherwise empty string is
+     * printed for 0 */
+    if (num == 0) {
+        str[i++] = '0';
+        str[i] = '\0';
+        return str;
+    }
+
+    // In standard itoa(), negative numbers are handled
+    // only with base 10. Otherwise numbers are
+    // considered unsigned.
+    if (num < 0 && base == 10) {
+        isNegative = true;
+        num = -num;
+    }
+
+    // Process individual digits
+    while (num != 0) {
+        int rem = num % base;
+        str[i++] = (rem > 9) ? (rem - 10) + 'a' : rem + '0';
+        num = num / base;
+    }
+
+    // If number is negative, append '-'
+    if (isNegative)
+        str[i++] = '-';
+
+    str[i] = '\0'; // Append string terminator
+
+    // Reverse the string
+    reverse(str, i);
+
+    return str;
+}
+
+}