From d2b98c702651ef76c1b50b0cca5e5935ef1504bd Mon Sep 17 00:00:00 2001
From: Alessandro <alemauri001@gmail.com>
Date: Sat, 2 Nov 2019 18:38:10 +0000
Subject: [PATCH] Delete ste.bak

---
 ste.bak | 644 --------------------------------------------------------
 1 file changed, 644 deletions(-)
 delete mode 100644 ste.bak

diff --git a/ste.bak b/ste.bak
deleted file mode 100644
index 9720459..0000000
--- a/ste.bak
+++ /dev/null
@@ -1,644 +0,0 @@
-#include <ncurses.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-
-/* defines */
-#define CTRL(k) ((k) & 0x1f) // Control mask modifier
-#define TABSIZE 4 // Tab size as used in render
-
-/* main data structure containing:
- *	-cursor position
- *	+real (matching memory)
- *	+offset (memory and screen offset)
- *	+render (drawn on the screen)
- *	-window size
- *	-statusbar message */
-struct term {
-	struct {
-		int x;
-		int y;
-		int off_x;
-		int off_y;
-		int r_x;
-		int r_y;
-		int xx;
-		int yy;
-	} cur;
-
-	struct {
-		int x;
-		int y;
-	} dim;
-
-	char statusbar[30];
-	int pad;
-} t;
-
-/* Row structure, defines actual and
- * render chars, actual and render size
- * and difference between render and
- * real size of the row */
-typedef struct row {
-	int size;
-	char *chars;
-	int r_size;
-	char *render;
-	int delta;
-} row;
-
-/* Rows structure (or file buffer)
- * defines rows and teh number of rows */
-struct {
-	row *rw;
-	long rownum;
-} rows;
-
-/* Prototypes */
-/* draw operations */
-static void drawBar (char *s);
-static void drawScreen ();
-static void drawLines (void);
-static void updateRender (row *rw);
-static void updateScroll (void);
-static void cursorMove(int a);
-static int decimalSize (int n);
-static inline void lnMove (int y, int x);
-static int curRealToRender (row *rw, int c_x);
-
-/* Row operations */
-static inline void rowInit (void);
-static void rowAddChar (row *rw, char c);
-static void rowDeleteChar (row *rw, int m);
-static void rowCpy (row *to, row *from);
-
-/* Terminal operations */
-static void termInit (void);
-static void termExit (void);
-static void termDie (char *s);
-
-/* file operations */
-static void fileOpen (char *filename);
-void fileSave (char *filename);
-
-/* buffer operations */
-static void rowAddLast (char *s, int len);
-
-/* garbage */
-
-/* testing */
-static void updateInfo (void);
-static void rowAddRow (int pos);
-static int whatsThat (void);
-static void rowFree (row *rw);
-
-
-/* --------------------------------- main ------------------------------------ */
-int main (int argc, char *argv[])
-{
-	/* Initialize the first row */
-	rowInit();
-
-	/* Try to open the file */
-	if (argc != 2) {
-		perror("File not found");
-		exit(1);
-	} else fileOpen(argv[1]);
-
-	/* Initialize the terminal in raw mode,
-	 * start curses and initialize the term struct */
-	termInit();
-
-	/* Set the statusbar left (static) message */
-	sprintf(t.statusbar, "%s : %s %ld lines %dx%d", argv[0], argv[1], rows.rownum, t.dim.y, t.dim.y);
-
-	/* remember the initial row number */
-	int irow = decimalSize(rows.rownum);
-
-	/* Main event loop */
-	int c;
-	while (1) {
-	/* Redraw the screen */
-	drawScreen();
-
-		/* Wait for an event (keypress) */
-		switch (c = getch()) {
-			case (CTRL('q')):
-				termExit();
-				break;
-			case (KEY_LEFT):
-			case (KEY_RIGHT):
-			case (KEY_UP):
-			case (KEY_DOWN):
-				cursorMove(c);
-				break;
-			case (KEY_BACKSPACE):
-				rowDeleteChar(&rows.rw[t.cur.yy], 0);
-				break;
-			case (KEY_DC):
-				rowDeleteChar(&rows.rw[t.cur.yy], 1);
-				break;
-			case (KEY_ENTER):
-			case (10):
-			case ('\r'):
-				rowAddRow(t.cur.yy);
-				break;
-			case (KEY_END):
-				t.cur.y = rows.rownum;
-				t.cur.off_y = 0;
-				break;
-			case (KEY_HOME):
-				t.cur.y = 0;
-				t.cur.off_y = 0;
-				break;
-			default:
-				if (c == KEY_STAB) c = '\t';
-				rowAddChar(&rows.rw[t.cur.yy], c);
-		}
-		if (decimalSize(rows.rownum) - irow) updateInfo();
-	}
-
-	/* If by chance i find myself here be sure
-	 * end curses mode and clenaup */
-	termExit();
-	return 0;
-}
-
-/* ----------------------------- end of main ---------------------------------- */
-
-void termInit (void)
-{
-	/* Init the screen and refresh */
-	initscr();
-	refresh();
-
-	/* Enable raw mode, this makes the termianl ignore
-	 * interrupt signals like CTRL+C and CTRL+Z
-	 * allowing us to make our own bindings */
-	raw();
-
-	/* Allow use of function keys */
-	keypad(stdscr, TRUE);
-
-	/* Turn off echoing */
-	noecho();
-
-	/* Set the tab size */
-	set_tabsize(TABSIZE);
-
-	/* Start color mode */
-	start_color();
-	init_pair(2, COLOR_BLACK, COLOR_CYAN);
-	init_pair(1, COLOR_RED, COLOR_BLACK);
-
-	/* Set default color */
-	//bkgd(COLOR_PAIR(1));
-
-	/* Populate the main data structure */
-	updateInfo();
-
-	/* Initialize the data staructure */
-	t.cur.x = t.cur.off_x = 0;
-	t.cur.y = t.cur.off_y = 0;
-}
-
-/* Calculate the correct spacing for the line numbers
- * based on the size of the file */
-int decimalSize (int n)
-{
-	static int l;
-	for (l = 0; n > 0; l++) n /= 10;
-	return l + 1;
-}
-
-void termExit (void)
-{
-	erase();
-	refresh();
-	endwin();
-	exit(0);
-}
-
-void termDie (char *s)
-{
-	erase();
-	refresh();
-	endwin();
-	perror(s);
-	exit(1);
-}
-
-/* ----------------------------- term operations -------------------------------- */
-
-void drawScreen ()
-{
-	/* Clear the screen */
-	erase();
-	/* Update Scroll */
-	updateScroll();
-	/* draw the lines */
-	drawLines();
-	/* draw the bar */
-	drawBar(t.statusbar);
-	/* move back to the cursor position */
-	lnMove(t.cur.y, t.cur.r_x);
-	/* refresh the screen */
-	refresh();
-}
-
-/* Draw all the appropriate lines (following cursor) to the screen */
-void drawLines (void)
-{
-	static unsigned int line = 0, ln = 0;
-	static int i = 0;
-	/* move to the beginning of the screen */
-	//lnMove(0, 0);
-
-	for (i = 0; i < t.dim.y; i++) {
-		if (i >= rows.rownum) break;
-		ln = i + t.cur.off_y;
-		
-		/* Draw the line number */
-		attron(COLOR_PAIR(1));
-		move(i, 0);
-		printw("%d", ln + 1);
-		attroff(COLOR_PAIR(1));
-		lnMove(i, 0);
-
-		/* Draw the line matcing render memory */
-		addnstr(&rows.rw[ln].render[t.cur.off_x], t.dim.x + 1 - rows.rw[ln].delta);
-		
-		lnMove(++line, 0);
-	}
-	lnMove(t.cur.y, t.cur.x);
-}
-
-/* Move avoiding the space allocated for line numbers */
-void lnMove (int y, int x)
-{
-	move(y, x + t.pad);
-}
-
-/* Draw the status bar at the bottom of the screen */
-void drawBar (char *s)
-{
-	/* Set maximum contrast for bar */
-	attron(COLOR_PAIR(2));
-	/* get the length of the statusbar text */
-	int len = strlen(s);
-	/* Print the message */
-	mvprintw(t.dim.y, 0, s);
-	/* Fill everything else with spaces */
-	for (int i = len; i <= t.dim.x + t.pad; i++)
-		mvaddch(t.dim.y, i, ' ');
-
-	static char m[40];
-	sprintf(m, "x: %d y: %d Zoom: %c", t.cur.xx, t.cur.yy, whatsThat());
-	mvaddstr(t.dim.y, t.dim.x + t.pad - strlen(m), m);
-
-	/* Return to normal contrast mode */
-	attroff(COLOR_PAIR(2));
-}
-
-/* convert the cursor matchoing the memory to the drawn one */
-int curRealToRender (row *rw, int c_x)
-{
-	static int r_x = 0, i = 0;
-	for (i = 0, r_x = 0; i < c_x; i++) {
-		if (rw->chars[i] == '\t') r_x += (TABSIZE - 1) - (r_x % TABSIZE);
-		r_x++;
-	}
-	return r_x;
-}
-
-/* -------------------------------- draw operations -------------------------------- */
-
-/* Open a file and put it into a buffer line by line */
-void fileOpen (char *filename)
-{
-	FILE *fp = fopen(filename, "r");
-	if (!fp) termDie("Cannot open file");
-
-	/* Init the linebuffer */
-	char *line = NULL;
-	/* Set linecap to 0 so getline will atumatically allocate
-	 * memory for the line buffer*/
-	size_t linecap = 0;
-	ssize_t linelen;
-
-	/* getline returns -1 if no new line is present */
-	while ((linelen = getline(&line, &linecap, fp)) != -1) {
-		while (linelen > 0 && (line[linelen - 1] == '\n' || line[linelen - 1] == '\r'))
-			linelen--;
-		rowAddLast(line, linelen);
-	}
-	/* free the line buffer */
-	free(line);
-	/* close the file */
-	fclose(fp);
-}
-
-/* Add a row to the file buffer */
-void rowAddLast (char *s, int len)
-{
-	/* Extend the block of memory containing the lines */
-	// reallocarray fails safely
-	row *newr = NULL;
-	newr = (row*) reallocarray(rows.rw, (rows.rownum + 1), sizeof(*newr));
-	if (newr == NULL) termDie("realloc rowAddLast");
-	else rows.rw = newr;
-	//rows.rw = (row*) realloc(rows.rw, sizeof(row) * (rows.rownum + 1));
-
-	/* Allocate memory for the line and copy it
-	 * at the current row number */
-	rows.rw[rows.rownum].chars = (char*) malloc(len  + 1);
-	memcpy(rows.rw[rows.rownum].chars, s, len);
-	rows.rw[rows.rownum].chars[len] = '\0';
-	rows.rw[rows.rownum].size = len;
-	updateRender(&rows.rw[rows.rownum]);
-	rows.rownum++;
-}
-
-void updateRender (row *rw)
-{
-	/* count the special characters (only tabs for now) */
-	int tabs = 0, i;
-	for (i = 0; i <= rw->size; i++) {
-		if (rw->chars[i] == '\t') tabs++;
-	}
-	rw->render = NULL;
-	free(rw->render);
-
-	/* Render is long as size with the added tab spaces - 1
-	 * (we already count for the \t as a char) */
-	rw->render = malloc(rw->size + tabs * (TABSIZE - 1) + 1);
-
-	if (rw->render == NULL) termDie ("malloc in updateRender");
-
-	/* put all the characters (substituing all special chars)
-	 * into the render buffer */
-	static int off, j = 0;
-	off = 0;
-	for (i = 0; i <= rw->size; i++) {
-		if (rw->chars[i] == '\t') {
-			for (j = 0; j < TABSIZE; j++){
-				if (!j) rw->render[off++] = '|'; 
-				else rw->render[off++] = ' ';
-			}
-		} else {
-			rw->render[off++] = rw->chars[i];
-		}
-	}
-	off -= 1;
-	rw->render[off] = '\0';
-	rw->r_size = off;
-}
-
-void rowInit (void)
-{
-	rows.rw = NULL;
-	rows.rownum = 0;
-}
-
-void rowAddChar (row *rw, char c) // WIP
-{
-	// Error checking (allow tab)
-	if (!c || (iscntrl(c) && c != '\t')) return;
-	
-	int i = 0;
-	char *s = rw->chars;
-
-	// reallocate mem and inc size
-	rw->chars = (char*) malloc(rw->size + 2);
-	rw->size++;
-
-	// copy bf cursor
-	for (i = 0; i < t.cur.xx; i++) {
-		rw->chars[i] = s[i];
-	}
-
-	// add at cursor
-	rw->chars[t.cur.xx++] = c;
-
-	//copy after cursor 
-	for (i = t.cur.xx; i < rw->size + 1; i++) {
-			rw->chars[i] = s[i - 1];
-	}
-	
-	free(s);
-
-	updateRender(rw);
-	t.cur.x++;
-}
-
-void rowDeleteChar (row *rw, int m) // WIP
-{
-	char *s = rw->chars;
-	//Do not delete NULL char
-	if (s[t.cur.xx - 1] == '\0' && t.cur.xx) return;
-	if (!t.cur.xx && !m) return;
-	if (s[t.cur.xx] == '\0' && m) return;
-
-	rw->chars = malloc(rw->size);
-	rw->size--;
-
-	// Backspace
-	if (!m) {
-		for (int i = 0; i < t.cur.xx - 1; i++)
-			rw->chars[i] = s[i];
-	
-		for (int i = t.cur.xx; i < rw->size + 1; i++)
-			rw->chars[i - 1] = s[i];
-
-		t.cur.x--;
-	// Delete			
-	} else {
-		if(t.cur.xx) {
-			for (int i = 0; i < t.cur.xx; i++)
-				rw->chars[i] = s[i];
-		}
-	
-		for (int i = t.cur.xx; i < rw->size + 1; i++)
-			rw->chars[i] = s[i + 1];
-	}
-	
-	free(s);
-	updateRender(rw);
-}
-
-/* ----------------------------- file operations --------------------------- */
-
-/* take care of the cursor movement */
-void cursorMove (int a)
-{
-	switch (a) {
-		case (KEY_LEFT):
-			if (t.cur.x <= 0 && !t.cur.off_x) {
-				if (t.cur.y) {
-					t.cur.y--;
-					t.cur.yy--;
-					t.cur.x = rows.rw[t.cur.yy].size;
-				}
-			} else t.cur.x--;
-			break;
-			
-		case (KEY_RIGHT):
-			if (t.cur.xx >= rows.rw[t.cur.yy].size) {
-				if (t.cur.yy < rows.rownum - 1) {
-					t.cur.y++;
-					t.cur.yy++;
-					if (t.cur.off_x) t.cur.off_x = 0;
-					t.cur.x = rows.rw[t.cur.yy].size;
-				}
-			} else t.cur.x++;
-			break;
-			
-		case (KEY_UP):
-			if (t.cur.yy > 0) {
-				if (t.cur.y) {
-					t.cur.y--;
-					t.cur.yy--;
-				if (t.cur.xx > rows.rw[t.cur.yy].size) {
-					if (t.cur.off_x) t.cur.off_x = 0;
-					t.cur.x = rows.rw[t.cur.yy].size;
-				}
-			}
-			break;
-
-		case (KEY_DOWN):
-			if (t.cur.yy < rows.rownum - 1) {
-				t.cur.y++;
-				t.cur.yy++;
-				if (t.cur.xx > rows.rw[t.cur.yy].size) {
-					if (t.cur.off_x) t.cur.off_x = 0;
-					t.cur.x = rows.rw[t.cur.yy].size;
-				}
-			}
-			break;
-		}
-	}
-}
-
-void updateScroll (void)
-{
-	/* Set y offset */
-	if (t.cur.y >= t.dim.y) {
-		if (t.cur.y == t.dim.y) t.cur.off_y++;
-		else t.cur.off_y += t.cur.y - t.dim.y;
-		
-		t.cur.y = t.dim.y - 1;
-		
-	} else if (t.cur.y <= 0 && t.cur.off_y > 0) {
-		t.cur.off_y--;
-		t.cur.y = 0;
-	}
-
-	/* Set x offeset */
-	if (t.cur.x >= t.dim.x) {
-		if (t.cur.x == t.dim.x - 1) t.cur.off_x++;
-		else t.cur.off_x += t.cur.x - t.dim.x;
-		
-		t.cur.x = t.dim.x;
-		
-	} else if (t.cur.x <= 0 && t.cur.off_x > 0) {
-		t.cur.off_x--;
-		t.cur.x = 0;
-	}
-	/* convert the cursor from real to render */
-	t.cur.yy = t.cur.y + t.cur.off_y;
-	t.cur.xx = t.cur.x + t.cur.off_x;
-	t.cur.r_x = curRealToRender(&rows.rw[t.cur.yy], t.cur.x);
-}
-
-/*---------------------------------- scroll ------------------------------------*/
-
-/* See whats under the cursor (memory) */
-int whatsThat (void) {
-	int c = rows.rw[t.cur.yy].chars[t.cur.xx];
-	switch (c) {
-		case ('\t'):
-			return '^';
-			break;
-		case (' '):
-			return '~';
-			break;
-		case ('\0'):
-			return '.';
-			break;
-		default:
-			return c;
-			break;
-	}
-	return 0;
-}
-
-void rowAddRow (int pos) // WIP; TO DOCUMENT
-{
-	char *s = NULL;
-	// Move away other lines
-	//copy old last line to new space
-	rowAddLast(rows.rw[rows.rownum].chars, rows.rw[rows.rownum].size);
-
-	for (int last = rows.rownum - 1; last > pos; last--) {
-		rowCpy(&rows.rw[last], &rows.rw[last - 1]);
-	}
-
-	//copy previous row
-	int l = rows.rw[pos].size - t.cur.xx;
-	s = malloc(l + 1);
-	memcpy(s, &rows.rw[pos].chars[t.cur.xx], l);
-	s[l] = '\0';
-	// Delete prev row until cursor
-	char *p = malloc(t.cur.xx + 1);
-	memcpy(p, rows.rw[pos].chars, t.cur.xx);
-	p[t.cur.xx] = '\0';
-	rowFree(&rows.rw[pos]);
-	rows.rw[pos].chars = malloc(t.cur.xx + 1);
-	memcpy(rows.rw[pos].chars, p, t.cur.xx + 1);
-	free(p);
-	rows.rw[pos].size = t.cur.xx;
-	updateRender(&rows.rw[pos]);
-
-	if (pos != rows.rownum - 1) {
-		rowFree(&rows.rw[pos + 1]);
-		rows.rw[pos + 1].chars = malloc(strlen(s) + 1);
-		memcpy(rows.rw[pos + 1].chars, s, strlen(s) + 1);
-		rows.rw[pos + 1].size = strlen(s);
-		updateRender(&rows.rw[pos + 1]);
-	} else rowAddLast(s, l);
-
-	free(s);
-	t.cur.y++;
-	t.cur.x = 0;
-	t.cur.off_x = 0;
-}
-
-void rowFree (row *rw) // WIP
-{
-	free(rw->render);
-	free(rw->chars);
-	rw->size = 0;
-	rw->r_size = 0;
-}
-
-void rowCpy (row *to, row *from) // WIP
-{ 
-	rowFree(to);
-	to->chars = malloc(strlen(from->chars) + 1);
-	if (to->chars == NULL) termDie("malloc in rowCpy");
-	to->size = from->size;
-	memcpy(to->chars, from->chars, to->size);
-	updateRender(to);
-}
-
-/*--------------------------------- garbage ------------------------------------*/
-
-void updateInfo (void)
-{
-	getmaxyx(stdscr, t.dim.y, t.dim.x);
-	t.dim.y -= 1;
-	t.pad = decimalSize(rows.rownum);
-	t.dim.x -= t.pad + 1;
-}
-
-/*--------------------------------- testing ------------------------------------*/