1 files changed, 98 insertions, 0 deletions
diff --git a/src/core/terminal.c b/src/core/terminal.c
new file mode 100644
index 0000000..b4929f4
--- /dev/null
+++ b/src/core/terminal.c
@@ -0,0 +1,98 @@
+#include "hybbx/terminal.h"
+#include "hybbx/session.h"
+#include "hybbx/traffic.h"
+#include "hybbx/limits.h"
+
+#include <string.h>
+
+static int term_is_csi_terminator(unsigned char ch)
+{
+    return ch >= 0x40 && ch <= 0x7E;
+}
+
+size_t hybbx_term_copy_plain(const char *src, char *dst, size_t dst_size)
+{
+    size_t di = 0;
+    size_t si = 0;
+
+    if (dst == NULL || dst_size == 0) {
+        return 0;
+    }
+
+    dst[0] = '\0';
+
+    if (src == NULL) {
+        return 0;
+    }
+
+    while (src[si] != '\0' && di + 1 < dst_size) {
+        unsigned char ch = (unsigned char)src[si];
+
+        if (ch == 0x1Bu) {
+            si++;
+            if (src[si] == '\0') {
+                break;
+            }
+
+            if (src[si] == '[') {
+                si++;
+                while (src[si] != '\0' && !term_is_csi_terminator((unsigned char)src[si])) {
+                    si++;
+                }
+                if (src[si] != '\0') {
+                    si++;
+                }
+            } else {
+                si++;
+            }
+            continue;
+        }
+
+        dst[di++] = (char)ch;
+        si++;
+    }
+
+    dst[di] = '\0';
+    return di;
+}
+
+hybbx_result_t hybbx_term_init_session(hybbx_session_t *session)
+{
+    const hybbx_traffic_config_t *traffic;
+
+    if (session == NULL) {
+        return HYBBX_ERR_INVALID;
+    }
+
+    traffic = hybbx_traffic_config_get();
+    if (traffic == NULL || !traffic->ansi) {
+        return HYBBX_OK;
+    }
+
+    return hybbx_session_write(session, HYBBX_TERM_SGR_LIGHTGRAY_ON_BLACK);
+}
+
+hybbx_result_t hybbx_term_clear_screen(hybbx_session_t *session)
+{
+    const hybbx_traffic_config_t *traffic;
+    int i;
+
+    if (session == NULL) {
+        return HYBBX_ERR_INVALID;
+    }
+
+    traffic = hybbx_traffic_config_get();
+    if (traffic != NULL && traffic->ansi) {
+        return hybbx_session_write(session, HYBBX_TERM_CLEAR_SCREEN);
+    }
+
+    for (i = 0; i < 24; i++) {
+        hybbx_result_t rc = hybbx_session_write(session, "\n");
+
+        if (rc != HYBBX_OK) {
+            return rc;
+        }
+    }
+
+    return HYBBX_OK;
+}