From 1f04e55306f7b820b7e7a954b3f808fc41bd3ae2 Mon Sep 17 00:00:00 2001
From: milang <milan.garnier@orange.fr>
Date: Sat, 21 Sep 2019 12:48:06 +0200
Subject: [PATCH] don't automatically add new lines at each message add
 ll_pause function

---
 liblog.c | 91 +++++++++++++++++++++++++++++++++++++-------------------
 liblog.h |  9 +++++-
 2 files changed, 69 insertions(+), 31 deletions(-)

diff --git a/liblog.c b/liblog.c
index ce9cb43..4af9081 100644
--- a/liblog.c
+++ b/liblog.c
@@ -2,18 +2,20 @@
 #include <gint/keyboard.h>
 #include <gint/display.h>
 #include <gint/std/stdlib.h>
+#include <gint/std/stdio.h>
 #include <gint/defs/attributes.h>
 #include <liblog.h>
+#include <stdint.h>
 
 #ifdef FX9860G
 
-#define MAX_LENGHT 21
+#define MAX_LENGHT 22
 #define WIDTH 8
 
 #endif
 #ifdef FXCG50
 
-#define MAX_LENGHT 150
+#define MAX_LENGHT 132
 #define WIDTH 17
 
 #endif
@@ -29,13 +31,15 @@ typedef struct log_line
     char text[MAX_LENGHT];
 #endif
     void* next;
+    int cursor;
 } log_line;
 
 
 static log_line first_line=
 {
     0,
-    "<Log beginning>",
+    "",
+    0,
     0
 };
 
@@ -48,10 +52,13 @@ static log_line* add_line()
     current_line = current_line->next;
     current_line->previous=previous;
     current_line->next=0;
-    current_line->text[0]=' ';
+    current_line->cursor=0;
+    for (int i=0; i<MAX_LENGHT; i++)
+        current_line->text[i]='\0';
+    return current_line;
 }
 
-static void clear_log()
+void ll_clear()
 {
     while (current_line->previous)
     {
@@ -59,6 +66,10 @@ static void clear_log()
         free(current_line);
         current_line=next;
     }
+    current_line->next=0;
+    current_line->cursor=0;
+    for (int i=0; i<MAX_LENGHT; i++)
+        current_line->text[i]='\0';
 }
 
 static void show_line(const log_line* l, int y)
@@ -66,52 +77,47 @@ static void show_line(const log_line* l, int y)
     dtext(1, y, &l->text[0], C_BLACK, C_NONE);
 }
 
-static void set_character(char c, int x)
+static void append_character(char c)
 {
 
-    if (c=='\0' || c=='\n')
+    if (c=='\n')
     {
-        current_line->text[x]= '\0';
+        current_line->text[current_line->cursor]= '\0';
         add_line();
     }
     else
     {
-        current_line->text[x] = c;
+        current_line->text[current_line->cursor] = c;
+        current_line->cursor ++;
+
+        if (current_line->cursor == MAX_LENGHT-1)
+            add_line();
+        current_line->text[current_line->cursor] = '\0';
+#ifdef FXCG50
+        if (dsize(&current_line->text[0])>396-7)
+        {
+            add_line();
+        }
+#endif
     }
 }
 
 // log something
 void ll_send(const char * txt)
 {
-    add_line();
     char c=1;
     int i=0;
-    int p=0;
     while (c)
     {
         c=txt[i];
-        set_character(c,p);
-        p++;
-        if (c=='\0' || c=='\n')
-            p=0;
-        if (p==MAX_LENGHT-1)
-        {
-            set_character('\0', p);
-            p=0;
-        }
-#ifdef FXCG50
-        if (dsize(&current_line->text[0])>396-3)
-        {
-            set_character('\0', p);
-            p=0;
-        }
-#endif
+        append_character(c);
         i++;
     }
 }
 
 void ll_display_custom(log_line* line)
 {
+    dfont(NULL);
     dclear(C_WHITE);
     for (int i=0; i<8; i++)
     {
@@ -134,10 +140,35 @@ void ll_display()
     ll_display_custom(current_line);
 }
 
-
-
-GNORETURN void ll_panic()
+void ll_pause()
 {
+    log_line* line=current_line;
+    while (1)
+    {
+        ll_display_custom(line);
+        int key = getkey().key;
+        if (key==KEY_UP)
+        {
+            log_line* linet=line->previous;
+            if (linet)
+                line=linet;
+        }
+        if (key==KEY_DOWN)
+        {
+            log_line* linet=line->next;
+            if (linet)
+                line=linet;
+        }
+        if (key==KEY_EXIT)
+            break;
+    }
+}
+
+GNORETURN void ll_panic(uint32_t code)
+{
+    char str[10];
+    sprintf(str, "\nException occured : %d", code);
+    ll_send(str);
     log_line* line=current_line;
     while (1)
     {
diff --git a/liblog.h b/liblog.h
index 455ee68..7507303 100644
--- a/liblog.h
+++ b/liblog.h
@@ -2,12 +2,19 @@
 #define LLOG
 
 // Display a message in the log stream
+// you can add \n to start an new line ^^
 void ll_send(const char * txt);
 
-// Puts the 8 last lines of the stream
+// Put the 8 last lines of the stream
 void ll_display();
 
+// Enable log displaying on panic
 void ll_set_panic();
 
+// Display log, enable scrolling, and waits the user to press Exit
+void ll_pause();
+
+// Clear log
+void ll_clear();
 
 #endif