From bce944d1498eaa3b6940ee234c863b3548a66b37 Mon Sep 17 00:00:00 2001
From: Benji Dial <benji6283@gmail.com>
Date: Sun, 24 Jan 2021 12:00:11 -0500
Subject: graphics!

---
 src/user/highway/line.c | 85 ++++++++++++++++++++++++++++++++-----------------
 1 file changed, 55 insertions(+), 30 deletions(-)

(limited to 'src/user/highway/line.c')

diff --git a/src/user/highway/line.c b/src/user/highway/line.c
index c8e5c60..bf171e5 100644
--- a/src/user/highway/line.c
+++ b/src/user/highway/line.c
@@ -1,19 +1,37 @@
-#include <pland/pcrt.h>
+#include <terminal/terminal.h>
+
 #include <knob/block.h>
 #include <knob/task.h>
-#include <knob/user.h>
+
+#include <pland/pcrt.h>
+
 #include "cmds.h"
+#include "term.h"
 #include "vars.h"
 
 #define LINE_SIZE 4096
 static char line[LINE_SIZE];
 
+static inline uint8_t hex_to_int(char ch) {
+  return ch - (ch <= '9' ? '0' : 'a' - 10);
+}
+
+void ensure_color() {
+  const struct no_null_sn *fg = get_var((struct no_null_sn){.data = "_color_fg", .length = 9});
+  const struct no_null_sn *bg = get_var((struct no_null_sn){.data = "_color_bg", .length = 9});
+  if (fg && bg)
+    set_color(
+      (hex_to_int(fg->data[0]) << 4) | hex_to_int(fg->data[1]),
+      (hex_to_int(bg->data[0]) << 4) | hex_to_int(bg->data[1])
+    );
+}
+
 static void line_replace(const char *from) {
   const char *fi = from;
   char *ti = line;
   while (*fi) {
     if (ti == line + LINE_SIZE) {
-      tell_user_sz("Line too long.\n");
+      term_add_sz("Line too long.\n");
       line[0] = '\0';
       return;
     }
@@ -27,12 +45,15 @@ static void line_replace(const char *from) {
     const char *var_end = var_start;
     while (*var_end != '$')
       if (!*var_end++) {
-        tell_user_sz("Unterminated variable name.\n");
+        if (var_end - fi > 10)
+          term_addf("Unterminated variable at\"%10s...\".\n", fi);
+        else
+          term_addf("Unterminated variable at \"%s\".\n", fi);
         line[0] = '\0';
         return;
       }
     if (ti + (var_end - var_start) >= line + LINE_SIZE) {
-      tell_user_sz("Line too long.\n");
+      term_add_sz("Line too long.\n");
       line[0] = '\0';
       return;
     }
@@ -59,46 +80,50 @@ void run_line(const char *original_line) {
     ;
   if (blockequ(line, "source ", 7))
     source(space + 1);
-  else if (blockequ(line, "set ", 4))
+  else if (blockequ(line, "set ", 4)) {
     set(space + 1);
+    ensure_color();
+  }
   else if (blockequ(line, "echo ", 5)) {
-    tell_user_sz(space + 1);
-    tell_user_sz("\n");
+    term_add_sz(space + 1);
+    term_add_char('\n');
   }
   else if (blockequ(line, "vars", 5))
     dump_vars();
-  else if (blockequ(line, "quit", 5))
+  else if (blockequ(line, "quit", 5)) {
+    del_term(active_term);
     __pcrt_quit();
+  }
   else if (blockequ(line, "clear", 6))
-    _clear_screen();
+    clear_term();
   else if (blockequ(line, "help", 5))
-    tell_user_sz("Highway is a command shell for Portland OS. It includes variables and a couple\n"
-                 "of pseudo-commands. Variables are addressed by surrounding with \"$\". The\n"
-                 "following list shows each of the pseudo-commands.\n\n"
-                 "  source FILE       run each command in FILE\n"
-                 "  clear             clear the screen\n"
-                 "  echo STRING       print STRING\n"
-                 "  set VAR VALUE     set $VAR$ to VALUE\n"
-                 "  vars              dump variables\n"
-                 "  quit              exit highway\n"
-                 "  help              show this\n");
-  else if (!try_run_command_blocking(line)) {
-    struct no_null_sn arg = {
-      .data = "_path",
-      .length = 5
-    };
-    const struct no_null_sn *path = get_var(arg);
+    term_add_sz("Highway is a command shell for Portland OS. It includes variable support and a couple of pseudo-commands. Variables are addressed by surrounding with \"$\". The following list shows each of the pseudo-commands.\n\n"
+                "  source FILE\t"   "run each command in FILE\n"
+                "  clear\t\t\t"     "clear the screen\n"
+                "  echo STRING\t"   "print STRING\n"
+                "  set VAR VALUE\t" "set $VAR$ to VALUE\n"
+                "  vars\t\t\t"      "dump variables\n"
+                "  quit\t\t\t"      "exit highway\n"
+                "  help\t\t\t"      "show this\n");
+  else if (!try_run_command_blocking(line, stdio_task)) {
+    const struct no_null_sn *path = get_var((struct no_null_sn){.data = "_path", .length = 5});
     if (!path->length) {
-      tell_user_sz("Could not run command.\n");
+      term_add_sz("Could not run command.\n");
       return;
     }
     for (uint16_t to_i = LINE_SIZE - 1; to_i >= path->length; --to_i)
       line[to_i] = line[to_i - path->length];
     blockcpy(line, path->data, path->length);
-    if (!try_run_command_blocking(line)) {
-      tell_user_sz("Could not run command.\n");
+    if (!try_run_command_blocking(line, stdio_task)) {
+      term_add_sz("Could not run command.\n");
       return;
     }
+    else {
+      ensure_color();
+      if (active_term->cursor_x)
+        term_newline();
+    }
   }
-  _set_color(0x07);
+  else
+    ensure_color();
 }
\ No newline at end of file
-- 
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