#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
+#include <stdbool.h>
+
+/* TODO
+- whitelist input on GetStr/GetInt
+*/
// Memory
#define NEWARR(TYPE, NUM) ((TYPE *)calloc(NUM, sizeof(TYPE)))
-// getch()
+// getch
#ifdef _WIN32
+#include <windows.h>
#include <conio.h>
#else
+#include <sys/ioctl.h>
#include <termios.h>
#include <unistd.h>
#include <stdio.h>
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 );
+ newattr.c_lflag &= ~( ICANON | ECHO ); // no ECHO for echo(?)
tcsetattr( STDIN_FILENO, TCSANOW, &newattr );
ch = getchar();
tcsetattr( STDIN_FILENO, TCSANOW, &oldattr );
void vt100CursorPos(int v, int h) { vt100Escape("[%d;%dH", v, h); }
void vt100SaveCursor() { vt100Escape("7"); }
void vt100RestoreCursor() { vt100Escape("8"); }
+// void vt100GetCursor(int * v, int * h) {
+// *v = *h = 0;
+// printf("\033[6n");
+// getch(); getch();
+// int c;
+// while ((c = getch()) != ';')
+// *v = (10*(*v)+(c-'0'));
+// while ((c = getch()) != 'R')
+// *h = (10*(*h)+(c-'0'));
+// }
+void vt100GetScreenSize(int * v, int * h) {
+#ifdef _WIN32
+ CONSOLE_SCREEN_BUFFER_INFO csbi;
+ GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi);
+ *h = csbi.srWindow.Right - csbi.srWindow.Left + 1;
+ *v = csbi.srWindow.Bottom - csbi.srWindow.Top + 1;
+#else
+ struct winsize w;
+ ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
+ *h = w.ws_row;
+ *v = w.ws_col;
+#endif
+}
+void vt100EnableAlternateBuffer() { vt100Escape("[?1049h"); }
+void vt100DisableAlternateBuffer() { vt100Escape("[?1049l"); }
// JSON
typedef enum {
JSONNodeKind_Nul,
+ JSONNodeKind_Int,
JSONNodeKind_Str,
JSONNodeKind_Obj,
+ JSONNodeKind_Arr,
+ JSONNodeKind_COUNT
} JSONNodeKind;
struct JSONNode;
return result;
}
+JSONNode *
+JSONNodeNewNul() {
+ return JSONNodeNew(JSONNodeKind_Nul, (size_t)NULL);
+}
+
+JSONNode *
+JSONNodeNewInt(int i) {
+ return JSONNodeNew(JSONNodeKind_Int, (size_t)i);
+}
+
JSONNode *
JSONNodeNewStr(const char * str) {
return JSONNodeNew(JSONNodeKind_Str, (size_t)str);
}
JSONNode *
-JSONNodeNewNul() {
- return JSONNodeNew(JSONNodeKind_Nul, (size_t)NULL);
+JSONNodeNewArr() {
+ return JSONNodeNew(JSONNodeKind_Arr, (size_t)NULL);
}
JSONNode *
-JSONNodeAppend(JSONNode * this, JSONNode * that) {
+JSONNodePush(JSONNode * this, JSONNode * that) {
if (this->children == NULL) {
this->children = that;
}
return that;
}
+void
+JSONNodePop(JSONNode * this) {
+ if (this != NULL) {
+ JSONNode * ptr = this->children;
+
+ if (ptr == NULL) { // no children
+ JSONNodePop(this->parent);
+ }
+ else if (ptr->next == NULL) { // one child
+ this->children = NULL;
+
+ }
+ else { // more than one child
+ while (ptr->next->next != NULL)
+ ptr = ptr->next;
+ ptr->next = NULL;
+ }
+ }
+}
+
void
Indent(int indent) {
for (int i = 0; i < indent; i++)
}
void
-JSONNodePrint(JSONNode * node) {
+JSONNodePrint(JSONNode * node, JSONNode * currNode) {
if (node == NULL)
return;
static int indent;
if (node->parent == NULL)
indent = 0;
-
+
switch (node->kind) {
case JSONNodeKind_Nul: {
printf("null");
break;
}
+ case JSONNodeKind_Int: {
+ char * str = (char *)node->data;
+ printf("%s", (str == NULL || strlen(str) == 0) ? "0" : str);
+ break;
+ }
case JSONNodeKind_Str: {
char * str = (char *)node->data;
printf("\"%s\"", str == NULL ? "" : str);
JSONNode * ptr = node->children;
indent++;
while (ptr != NULL) {
- char * key = (char *)ptr->data;
+ JSONNode * key = ptr;
JSONNode * value = ptr->next;
Indent(indent);
- printf("\"%s\": ", key);
- JSONNodePrint(value);
+ JSONNodePrint(key, currNode);
+ printf(": ");
+ JSONNodePrint(value, currNode);
if (ptr->next != NULL)
ptr = ptr->next->next;
else
printf("}");
break;
}
+ case JSONNodeKind_Arr: {
+ printf("[ ");
+ JSONNode * ptr = node->children;
+ while (ptr != NULL) {
+ JSONNode * value = ptr;
+ JSONNodePrint(value, currNode);
+ ptr = ptr->next;
+ printf("%s", (ptr == NULL ? "" : ", "));
+ }
+ printf(" ]");
+ break;
+ }
+ }
+
+ if (currNode == node) {
+ vt100SaveCursor();
}
}
// Input
-JSONNode * g_Node;
+JSONNode * g_DrawNode = NULL;
+JSONNode * g_CurrNode = NULL;
void
-Draw(JSONNode * node, const char * str) {
+Draw(void) {
vt100ClearScreen();
vt100CursorHome();
- printf("> %s\n\n", str);
+ if (g_DrawNode != NULL) {
+ JSONNodePrint(g_DrawNode, g_CurrNode);
+ vt100RestoreCursor();
+ }
+}
- if (node != NULL)
- JSONNodePrint(node);
+int
+GetChar() {
+ Draw();
+ int c = getch();
+ return c;
+}
- vt100CursorPos(0, strlen(str) + 3);
+int
+PeekChar() {
+ Draw();
+ int c = peekch();
+ return c;
}
-char *
-GetStr() {
- char * str = NEWARR(char, 16);
+typedef bool(*CharPredicateFunc)(char, int);
+
+bool predStr(char c, int i) { return c >= 'a' && c <= 'z'; }
+bool predInt(char c, int i) { return c >= '0' && c <= '9'; }
+
+void
+GetStr(JSONNode * node, CharPredicateFunc charPredicate) {
+ node->data = (size_t)NEWARR(char, 16);
int strLen = 0;
+
+ char * str = (char *)node->data;
+
int c;
- while ((c = getch()), (c != '\r') && (c != '\n')) {
- if (strLen < 16 - 1) {
- str[strLen++] = c;
+ while ((c = GetChar()), (c != '\r') && (c != '\n')) {
+ if ((c == 8 || c == 127) && strLen > 0) {
+ strLen--;
+ str[strLen] = '\0';
+ }
+ else if (strLen < 16 - 1 && charPredicate(c, strLen)) {
+ str[strLen] = c;
+ strLen++;
str[strLen] = '\0';
- Draw(g_Node, str);
}
}
- return str;
}
-JSONNode *
-GetNode(JSONNode * parent) {
- int c = getch();
+void
+GetNode(JSONNode * parent, JSONNode * node) {
+ int c = GetChar();
+
+ g_CurrNode = node;
- JSONNode * result = JSONNodeNewNul();
-
if (parent == NULL)
- g_Node = result;
+ g_DrawNode = node;
- if (parent != NULL && result != NULL)
- JSONNodeAppend(parent, result);
+ if (parent != NULL && node != NULL)
+ JSONNodePush(parent, node);
switch (c) {
+ case 'i': {
+ node->kind = JSONNodeKind_Int;
+ GetStr(node, predInt);
+ break;
+ }
case 's': {
- result->kind = JSONNodeKind_Str;
- Draw(g_Node, "");
- result->data = (size_t)GetStr();
- Draw(g_Node, "");
+ node->kind = JSONNodeKind_Str;
+ GetStr(node, predStr);
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, "");
+ node->kind = JSONNodeKind_Obj;
+ while ((c = PeekChar()), (c != '\r') && (c != '\n')) {
+ JSONNode * newNode;
+
+ newNode = JSONNodeNewStr("");
+ g_CurrNode = newNode;
+ JSONNodePush(node, newNode);
+ GetStr(newNode, predStr);
+
+ newNode = JSONNodeNewNul();
+ JSONNodePush(node, newNode);
+ GetNode(node, newNode);
}
+ g_CurrNode = node;
getch();
+ break;
}
+ case 'a': {
+ node->kind = JSONNodeKind_Arr;
+ while ((c = PeekChar()), (c != '\r') && (c != '\n')) {
+ JSONNode * newNode;
+
+ newNode = JSONNodeNewNul();
+ //g_CurrNode = newNode;
+ JSONNodePush(node, newNode);
+ GetNode(node, newNode);
+ }
+ g_CurrNode = node;
+ getch();
+ break;
+ }
+ /*
+ case 8:
+ case 127:
+ JSONNodePop(parent);
+ JSONNode * newNode = JSONNodeNewNul();
+ GetNode(parent, newNode);
+ break;
+ */
+ case 't':
+ node->kind = JSONNodeKind_Int;
+ node->data = (size_t)GetChar();
+ break;
}
-
- 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, "");
+ vt100EnableAlternateBuffer();
+
+ Draw();
- JSONNode * n = GetNode(NULL);
+ JSONNode * n = JSONNodeNewNul();
+ GetNode(NULL, n);
//JSONNode * n = TestNode();
vt100ClearScreen();
vt100CursorHome();
- JSONNodePrint(n);
+ JSONNodePrint(n, NULL);
+ printf("\n");
// JSONFree(n);
+
+ vt100DisableAlternateBuffer();
return 0;
-}
\ No newline at end of file
+}
projects / iftint / blobdiff