WebSVN – HelenOS – Diff – /trunk/kernel/generic/src/console/console.c

 #include <print.h>
 #include <putchar.h>
 #include <atomic.h>
 #include <syscall/copy.h>
 #include <errno.h>
+#include <string.h>
 #define KLOG_SIZE     PAGE_SIZE
 #define KLOG_LATENCY  8
 /** Kernel log cyclic buffer */
+ *
  * @param indev Input character device.
  * @return Character read.
+ *
  */
-uint8_t _getc(indev_t *indev)
+wchar_t _getc(indev_t *indev)
+{
     if (atomic_get(&haltstate)) {
         /* If we are here, we are hopefully on the processor that
          * issued the 'halt' command, so proceed to read the character
          * directly from input
+    }
     waitq_sleep(&indev->wq);
     ipl_t ipl = interrupts_disable();
     spinlock_lock(&indev->lock);
-    uint8_t ch = indev->buffer[(indev->index - indev->counter) % INDEV_BUFLEN];
+    wchar_t ch = indev->buffer[(indev->index - indev->counter) % INDEV_BUFLEN];
     indev->counter--;
     spinlock_unlock(&indev->lock);
     interrupts_restore(ipl);
     return ch;
+ *
  * Read characters from input character device until first occurrence
  * of newline character.
+ *
  * @param indev  Input character device.
- * @param buf    Buffer where to store string terminated by '\0'.
+ * @param buf    Buffer where to store string terminated by NULL.
  * @param buflen Size of the buffer.
+ *
  * @return Number of characters read.
+ *
  */
 count_t gets(indev_t *indev, char *buf, size_t buflen)
+{
-    index_t index = 0;
+    size_t offset = 0;
+    count_t count = 0;
+    buf[offset] = 0;
-    while (index < buflen) {
+    wchar_t ch;
-        char ch = _getc(indev);
+    while ((ch = _getc(indev)) != '\n') {
         if (ch == '\b') {
-            if (index > 0) {
+            if (count > 0) {
-                index--;
-                /* Space backspace, space */
+                /* Space, backspace, space */
                 putchar('\b');
                 putchar(' ');
                 putchar('\b');
+                count--;
+                offset = str_lsize(buf, count);
+                buf[offset] = 0;
+            }
-            continue;
-        }
-        putchar(ch);
-        if (ch == '\n') { /* end of string => write 0, return */
-            buf[index] = '\0';
-            return (count_t) index;
+        }
+        if (chr_encode(ch, buf, &offset, buflen - 1) == EOK) {
+            putchar(ch);
+            count++;
-        buf[index++] = ch;
+            buf[offset] = 0;
+        }
+    }
-    return (count_t) index;
+    return count;
+}
 /** Get character from input device & echo it to screen */
-uint8_t getc(indev_t *indev)
+wchar_t getc(indev_t *indev)
+{
-    uint8_t ch = _getc(indev);
+    wchar_t ch = _getc(indev);
     putchar(ch);
     return ch;
+}
 void klog_update(void)
 /** Print using kernel facility
+ *
  * Print to kernel log.
+ *
  */
-unative_t sys_klog(int fd, const void * buf, size_t count)
+unative_t sys_klog(int fd, const void *buf, size_t size)
+{
     char *data;
     int rc;
-    if (count > PAGE_SIZE)
+    if (size > PAGE_SIZE)
         return ELIMIT;
-    if (count > 0) {
+    if (size > 0) {
-        data = (char *) malloc(count + 1, 0);
+        data = (char *) malloc(size + 1, 0);
         if (!data)
             return ENOMEM;
-        rc = copy_from_uspace(data, buf, count);
+        rc = copy_from_uspace(data, buf, size);
         if (rc) {
             free(data);
             return rc;
+        }
-        data[count] = 0;
+        data[size] = 0;
         printf("%s", data);
         free(data);
     } else
         klog_update();
-    return count;
+    return size;
+}
 /** @}
  */

Subversion Repositories HelenOS

(root)/trunk/kernel/generic/src/console/console.c – Rev 4194 → 4218