thisnthat

diff --git a/main2.c b/main2.c
index d58a5bcfdbfb65ae0d6ca75e7d2c93d971eece1c..47e11ee3227a53af2964fc8d182baf68318cd989 100644 (file)
--- a/main2.c
+++ b/main2.c
@@ -1,52 +1,306 @@
-#include <stdio.h>\r
-\r
-#ifdef _WIN32\r
-#include <conio.h>\r
-#else\r
-#include <termios.h>\r
-#include <unistd.h>\r
-#include <stdio.h>\r
-\r
-/* reads from keypress, doesn't echo */\r
-int getch(void)\r
-{\r
-    struct termios oldattr, newattr;\r
-    int ch;\r
-    tcgetattr( STDIN_FILENO, &oldattr );\r
-    newattr = oldattr;\r
-    newattr.c_lflag &= ~( ICANON | ECHO );\r
-    tcsetattr( STDIN_FILENO, TCSANOW, &newattr );\r
-    ch = getchar();\r
-    tcsetattr( STDIN_FILENO, TCSANOW, &oldattr );\r
-    return ch;\r
-}\r
-\r
-/* reads from keypress, echoes */\r
-int getche(void)\r
-{\r
-    struct termios oldattr, newattr;\r
-    int ch;\r
-    tcgetattr( STDIN_FILENO, &oldattr );\r
-    newattr = oldattr;\r
-    newattr.c_lflag &= ~( ICANON );\r
-    tcsetattr( STDIN_FILENO, TCSANOW, &newattr );\r
-    ch = getchar();\r
-    tcsetattr( STDIN_FILENO, TCSANOW, &oldattr );\r
-    return ch;\r
-}\r
-#endif\r
-\r
-#define ASCII_ESC 27\r
-\r
-int main() {\r
-    int c;\r
-    printf("Hallo\n");\r
-    c = getch();\r
-    printf("%c[2J", ASCII_ESC);\r
-    printf("%c[H", ASCII_ESC);\r
-    printf("c: %c\n", c);\r
-\r
-    c = getch();\r
-\r
-    return 0;\r
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <stdlib.h>
+
+// Memory
+
+#define NEW(TYPE) ((TYPE *)calloc(1, sizeof(TYPE)))
+#define NEWARR(TYPE, NUM) ((TYPE *)calloc(NUM, sizeof(TYPE)))
+
+
+// getch()
+
+#ifdef _WIN32
+#include <conio.h>
+#else
+#include <termios.h>
+#include <unistd.h>
+#include <stdio.h>
+
+/* reads from keypress, doesn't echo */
+int getch(void)
+{
+    struct termios oldattr, newattr;
+    int ch;
+    tcgetattr( STDIN_FILENO, &oldattr );
+    newattr = oldattr;
+    newattr.c_lflag &= ~( ICANON | ECHO );
+    tcsetattr( STDIN_FILENO, TCSANOW, &newattr );
+    ch = getchar();
+    tcsetattr( STDIN_FILENO, TCSANOW, &oldattr );
+    return ch;
+}
+
+/* reads from keypress, echoes */
+int getche(void)
+{
+    struct termios oldattr, newattr;
+    int ch;
+    tcgetattr( STDIN_FILENO, &oldattr );
+    newattr = oldattr;
+    newattr.c_lflag &= ~( ICANON );
+    tcsetattr( STDIN_FILENO, TCSANOW, &newattr );
+    ch = getchar();
+    tcsetattr( STDIN_FILENO, TCSANOW, &oldattr );
+    return ch;
+}
+
+/* ungets keypress */
+void ungetch(int ch)
+{
+    struct termios oldattr, newattr;
+    tcgetattr( STDIN_FILENO, &oldattr );
+    newattr = oldattr;
+    newattr.c_lflag &= ~( ICANON | ECHO );
+    tcsetattr( STDIN_FILENO, TCSANOW, &newattr );
+    ungetc(ch, stdin);
+    tcsetattr( STDIN_FILENO, TCSANOW, &oldattr );
+}
+#endif
+
+int
+peekch() {
+    int c = getch();
+    //ungetc(c, stdin);
+    ungetch(c);
+    return c;
+}
+
+
+// VT100
+
+#define ASCII_ESC 27
+
+void vt100Escape(const char * str, ...) {
+    va_list args;
+    va_start(args, str);
+
+    printf("%c", ASCII_ESC);
+    vprintf(str, args);
+}
+
+void vt100ClearScreen() { vt100Escape("[2J"); }
+void vt100CursorHome() { vt100Escape("[H"); }
+void vt100CursorPos(int v, int h) { vt100Escape("[%d;%dH", v, h); }
+void vt100SaveCursor() { vt100Escape("7"); }
+void vt100RestoreCursor() { vt100Escape("8"); }
+
+
+// JSON
+
+typedef enum {
+    JSONNodeKind_Nul,
+    JSONNodeKind_Str,
+    JSONNodeKind_Obj,
+} JSONNodeKind;
+
+struct JSONNode;
+typedef struct JSONNode {
+    JSONNodeKind kind;
+    size_t data;
+    struct JSONNode * parent;
+    struct JSONNode * children;
+    struct JSONNode * next;
+} JSONNode;
+
+JSONNode *
+JSONNodeNew(JSONNodeKind kind, size_t data) {
+    JSONNode * result = NEW(JSONNode);
+    result->kind = kind;
+    result->data = data;
+    return result;
+}
+
+JSONNode *
+JSONNodeNewStr(const char * str) {
+    return JSONNodeNew(JSONNodeKind_Str, (size_t)str);
+}
+
+JSONNode *
+JSONNodeNewObj() {
+    return JSONNodeNew(JSONNodeKind_Obj, (size_t)NULL);
+}
+
+JSONNode *
+JSONNodeNewNul() {
+    return JSONNodeNew(JSONNodeKind_Nul, (size_t)NULL);
+}
+
+JSONNode *
+JSONNodeAppend(JSONNode * this, JSONNode * that) {
+    if (this->children == NULL) {
+        this->children = that;
+    }
+    else {
+        JSONNode * lastNode = this->children;
+        while (lastNode->next != NULL)
+            lastNode = lastNode->next;
+        lastNode->next = that;
+    }
+    that->parent = this;
+    that->next = NULL;
+    
+    return that;
+}
+
+void
+Indent(int indent) {
+    for (int i = 0; i < indent; i++)
+        printf("  ");
+}
+
+void
+JSONNodePrint(JSONNode * node) {
+    if (node == NULL)
+        return;
+    
+    static int indent;
+    if (node->parent == NULL)
+        indent = 0;
+    
+    switch (node->kind) {
+    case JSONNodeKind_Nul: {
+        printf("null");
+        break;
+    }
+    case JSONNodeKind_Str: {
+        char * str = (char *)node->data;
+        printf("\"%s\"", str == NULL ? "" : str);
+        break;
+    }
+    case JSONNodeKind_Obj: {
+        printf("{\n");
+        JSONNode * ptr = node->children;
+        indent++;
+        while (ptr != NULL) {
+            char * key = (char *)ptr->data;
+            JSONNode * value = ptr->next;
+            Indent(indent);
+            printf("\"%s\": ", key);
+            JSONNodePrint(value);
+            if (ptr->next != NULL)
+                ptr = ptr->next->next;
+            else
+                ptr = NULL;
+            printf("%s\n", (ptr == NULL ? "" : ","));
+        }
+        indent--;
+        Indent(indent);
+        printf("}");
+        break;
+    }
+    }
+}
+
+
+// Input
+
+JSONNode * g_Node;
+
+void
+Draw(JSONNode * node, const char * str) {
+    vt100ClearScreen();
+    vt100CursorHome();
+    
+    printf("> %s\n\n", str);
+
+    if (node != NULL)
+        JSONNodePrint(node);
+
+    vt100CursorPos(0, strlen(str) + 3);
+}
+
+char *
+GetStr() {
+    char * str = NEWARR(char, 16);
+    int strLen = 0;
+    int c;
+    while ((c = getch()), (c != '\r') && (c != '\n')) {
+        if (strLen < 16 - 1) {
+            str[strLen++] = c;
+            str[strLen] = '\0';
+            Draw(g_Node, str);
+        }
+    }
+    return str;
+}
+
+JSONNode *
+GetNode(JSONNode * parent) {
+    int c = getch();
+
+    JSONNode * result = JSONNodeNewNul();
+    
+    if (parent == NULL)
+        g_Node = result;
+
+    if (parent != NULL && result != NULL)
+        JSONNodeAppend(parent, result);
+
+    switch (c) {
+    case 's': {
+        result->kind = JSONNodeKind_Str;
+        Draw(g_Node, "");
+        result->data = (size_t)GetStr();
+        Draw(g_Node, "");
+        break;
+    }
+    case 'o': {
+        result->kind = JSONNodeKind_Obj;
+        Draw(g_Node, "");
+        while ((c = peekch()), (c != '\r') && (c != '\n')) {
+            Draw(g_Node, "");
+
+            JSONNodeAppend(result, JSONNodeNewStr(GetStr()));
+            Draw(g_Node, "");
+
+            JSONNodeAppend(result, GetNode(result));
+            Draw(g_Node, "");
+        }
+        getch();
+    }
+    }
+
+    return result;
+}
+
+JSONNode *
+TestNode() {
+    JSONNode * n = JSONNodeNewObj();
+    JSONNode * k1 = JSONNodeNewStr("key 1");
+    JSONNode * v1 = JSONNodeNewObj();
+    JSONNode * k11 = JSONNodeNewStr("key 11");
+    JSONNode * v11 = JSONNodeNewStr("val 11");
+    JSONNode * k12 = JSONNodeNewStr("key 12");
+    JSONNode * v12 = JSONNodeNewStr("val 12");
+    JSONNode * k2 = JSONNodeNewStr("key 2");
+    JSONNode * v2 = JSONNodeNewStr("val 2");
+
+    JSONNodeAppend(n, k1);
+    JSONNodeAppend(n, v1);
+    JSONNodeAppend(n, k2);
+    JSONNodeAppend(n, v2);
+
+    JSONNodeAppend(v1, k11);
+    JSONNodeAppend(v1, v11);
+    JSONNodeAppend(v1, k12);
+    JSONNodeAppend(v1, v12);
+
+    return n;
+}
+
+int main() {
+    Draw(NULL, "");
+
+    JSONNode * n = GetNode(NULL);
+    //JSONNode * n = TestNode();
+
+    vt100ClearScreen();
+    vt100CursorHome();
+    JSONNodePrint(n);
+
+    // JSONFree(n);
+
+    return 0;
 }
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