New repo setup

2024-05-28 14:26:46 -05:00
commit 9ee197f57b
97 changed files with 11047 additions and 0 deletions
--- a/src/util/log.cpp
+++ b/src/util/log.cpp
@@ -0,0 +1,183 @@
+#include "log.h"
+
+#include <stddef.h>
+#include <stdbool.h>
+
+using namespace kernel;
+
+enum format_flags_t
+{
+    FORMAT_PADDING = '0',
+    FORMAT_WIDTH = '*',
+
+    FORMAT_SIGNED_DECIMAL = 'i',
+    FORMAT_UNSIGNED_DECIMAL = 'u',
+    FORMAT_UNSIGNED_OCTAL = 'o',
+    FORMAT_UNSIGNED_HEX = 'x',
+    FORMAT_STRING = 's',
+    FORMAT_CHARACTER = 'c',
+    FORMAT_COUNT = 'n',
+    FORMAT_PERCENT = '%'
+
+};
+
+static const char *FG_BLUE = "\x1b[34m";
+static const char *FG_YELLOW = "\x1b[33m";
+static const char *FG_RED = "\x1b[31m";
+static const char *BOLD_RED = "\x1b[1;31m";
+static const char *FG_FAINT = "\x1b[1;2m";
+static const char *MODE_RESET = "\x1b[0m";
+
+CharStream *stream = nullptr;
+
+static char *itoa(unsigned long n, unsigned int base, unsigned int width)
+{
+    if (base < 2 || base > 16)
+    {
+        return NULL;
+    }
+    static const char *digits = "0123456789abcdef";
+    static char buffer[65];
+    char *s = &buffer[64];
+    *s = 0;
+    unsigned int count = 0;
+    do
+    {
+        *--s = digits[n % base];
+        n /= base;
+        count++;
+    } while (count < width || n != 0);
+    return s;
+}
+
+int logInit(CharStream *outStream)
+{
+    stream = outStream;
+    return 0;
+}
+
+kernel::CharStream *getLogStream()
+{
+    return stream;
+}
+
+int vprintf(const char *format, va_list valist)
+{
+    if (stream == nullptr)
+    {
+        return 0;
+    }
+
+    while (*format)
+    {
+        if (*format == '%')
+        {
+            size_t width = 0;
+            switch (*++format)
+            {
+            case FORMAT_PADDING:
+                format++;
+                break;
+            }
+            while (*format >= '0' && *format <= '9')
+            {
+                width = (width * 10) + *format - '0';
+                format++;
+            }
+            switch (*format)
+            {
+            case FORMAT_SIGNED_DECIMAL:
+            {
+                int n = va_arg(valist, int);
+                if (n < 0)
+                {
+                    *stream << '-';
+                    n *= -1;
+                }
+                *stream << itoa((unsigned int)n, 10, width);
+                break;
+            }
+            case FORMAT_UNSIGNED_DECIMAL:
+                *stream << itoa(va_arg(valist, unsigned long), 10, width);
+                break;
+            case FORMAT_UNSIGNED_OCTAL:
+                *stream << itoa(va_arg(valist, unsigned long), 8, width);
+                break;
+            case FORMAT_UNSIGNED_HEX:
+                *stream << itoa(va_arg(valist, unsigned long), 16, width);
+                break;
+            case FORMAT_STRING:
+                *stream << va_arg(valist, const char *);
+                break;
+            case FORMAT_CHARACTER:
+                *stream << va_arg(valist, int);
+                break;
+            case FORMAT_PERCENT:
+                *stream << '%';
+                break;
+            }
+        }
+        else
+        {
+            *stream << *format;
+            if (*format == '\n')
+            {
+                *stream << '\r';
+            }
+        }
+        format++;
+    }
+}
+
+int printf(const char *format, ...)
+{
+    if (stream == nullptr)
+    {
+        return 0;
+    }
+
+    va_list valist;
+    va_start(valist, format);
+    vprintf(format, valist);
+    va_end(valist);
+    return 0;
+}
+
+void kernelLog(LogLevel level, const char *fmt, ...)
+{
+    va_list valist;
+    va_start(valist, fmt);
+    switch (level)
+    {
+#if !defined KERNEL_NODEBUG
+    case LogLevel::DEBUG:
+        printf("%s[Debug]: ", FG_FAINT);
+        vprintf(fmt, valist);
+        printf("%s\r\n", MODE_RESET);
+        break;
+#endif
+    case LogLevel::INFO:
+        printf("[%sInfo%s]: ", FG_BLUE, MODE_RESET);
+        vprintf(fmt, valist);
+        printf("\r\n");
+        break;
+    case LogLevel::WARNING:
+        printf("[%sWarning%s]: ", FG_YELLOW, MODE_RESET);
+        vprintf(fmt, valist);
+        printf("\r\n");
+        break;
+    case LogLevel::ERROR:
+        printf("[%sError%s]: ", FG_RED, MODE_RESET);
+        vprintf(fmt, valist);
+        printf("\r\n");
+        break;
+    case LogLevel::PANIC:
+        printf("[%sPANIC%s]: ", BOLD_RED, MODE_RESET);
+        vprintf(fmt, valist);
+        printf("\r\n");
+        break;
+    default:
+        break;
+    }
+    va_end(valist);
+}