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	save to file works - gramscii - A simple editor for ASCII box-and-arrow charts
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	---
	commit 52a48d7718c6467da380a51f49327323e15e00c7
	parent a2bf8545d73621de7cfa3a06663d1b94fdc668c4
	Author: KatolaZ <[email protected]>
	Date: Fri, 19 Jul 2019 18:03:29 +0100

	save to file works

	Diffstat:
	M TODO \| 16 +++++++++++-----
	M gramscii.c \| 110 +++++++++++++++++++++++++----…

	2 files changed, 102 insertions(+), 24 deletions(-)
	---
	diff --git a/TODO b/TODO
	@@ -1,14 +1,20 @@
	+ optimize redraws (i.e., avoid to redraw if possible)
	- (?) change cursor shape according to action
	-- save to file
	-- implement auto-arrow 'A' (automatic end-char)
	-- implement delete 'x' or 'd'
	+- auto-arrow 'A' (automatic end-char)
	+- delete -- 'x' or 'd'
	+- load from file
	+- read file at point
	+- visual selection
	+ - crop
	+ - fill
	+ - delete
	+ - yank/put
	+- undo (by storing lines changed across insert/remove operations)
	- manage special chars (DEL/CANC) during text insert
	(also do not print unmanaged chars!)
	-- load from file
	-- insert file at position
	- get screen geometry
	- allow scrolling (both vertical and horizontal)
	+* save to file
	* implement arrow
	* set different line styles (done for hl, vl, corner)
	* add status bar
	diff --git a/gramscii.c b/gramscii.c
	@@ -41,6 +41,10 @@
	#define ARR_D 'v'


	+#define HOME 0x01
	+#define END 0x02
	+#define MIDDLE 0x04
	+
	#define MIN(x,y) (x) < (y) ? (x) : (y)
	#define MAX(x,y) (x) > (y) ? (x) : (y)

	@@ -71,7 +75,7 @@ char line_v;
	char mark_st;
	char mark_end;

	-struct termios t1, t2;
	+struct termios t1, t2, t3;


	void cleanup(int s){
	@@ -245,6 +249,13 @@ void draw_box(int x1, int y1, int fix){
	}


	+void move_around(char c){
	+
	+
	+
	+}
	+
	+
	void get_box(){
	char c;
	int orig_x=x, orig_y=y;
	@@ -285,28 +296,12 @@ void get_box(){


	int progr_x(int dir){
	- switch(dir){
	- case DIR_L:
	- return -1;
	- case DIR_R:
	- return +1;
	- default:
	- return 0;
	- }
	- return 0;
	+ return dir == DIR_L ? -1 : dir == DIR_R ? 1: 0;
	}


	int progr_y(int dir){
	- switch(dir){
	- case DIR_D:
	- return +1;
	- case DIR_U:
	- return -1;
	- default:
	- return 0;
	- }
	- return 0;
	+ return dir == DIR_U ? -1 : dir == DIR_D ? 1: 0;
	}


	@@ -412,9 +407,58 @@ void get_arrow(){
	state = MOVE;
	}

	+char get_key(char *s){
	+
	+ printf("\033[%d;1f\033[7m", HEIGHT+1);
	+ printf("%100s", " ");
	+ printf("\033[%d;1f\033[7m", HEIGHT+1);
	+ printf("%s ", s);
	+ printf("\033[0m");
	+ return getchar();
	+}
	+
	+void get_string(char *s, int sz){
	+
	+ printf("\033[%d;1f\033[7m", HEIGHT+1);
	+ printf("%100s", " ");
	+ printf("\033[%d;1f\033[7m", HEIGHT+1);
	+ /* We must activate echo now */
	+ t3 = t2;
	+ t3.c_lflag \|= (ECHO \| ICANON);
	+ tcsetattr(0, TCSANOW, &t3);
	+ printf("Write to: ");
	+ printf("\033[0m");
	+ fgets(s, sz, stdin);
	+ s[strlen(s)-1] = '\0';
	+ tcsetattr(0, TCSANOW, &t2);
	+}
	+
	+int is_yes(char c){
	+ return c=='y' ? 1 : c == 'Y'? 1 : 0;
	+}
	+
	void write_file(){
	char fname[256];
	FILE *f;
	+ int i;
	+
	+ get_string(fname, 255);
	+ if (f=fopen(fname, "r")){
	+ if (!is_yes(get_key("File exists. Overwrite [y/N]?")) ){
	+ fclose(f);
	+ return;
	+ }
	+ fclose(f);
	+ }
	+ if((f=fopen(fname, "w"))==NULL){
	+ get_key("Error opening file.");
	+ return;
	+ }
	+ for (i=0; i<HEIGHT; i++){
	+ fprintf(f, "%s\n", screen[i]);
	+ }
	+ fclose(f);
	+ get_key("File saved.");
	}

	void toggle_hline(){
	@@ -450,6 +494,25 @@ void toggle_end_mark(){
	mark_end = end_marks[cur_end];
	}

	+void go_to(int where){
	+ switch(where){
	+ case HOME:
	+ x = y = 0;
	+ break;
	+ case END:
	+ x = WIDTH-1;
	+ y = HEIGHT-1;
	+ break;
	+ case MIDDLE:
	+ x = WIDTH/2;
	+ y = HEIGHT/2;
	+ break;
	+ }
	+ check_bound();
	+ show_cursor();
	+}
	+
	+
	void commands(){

	char c;
	@@ -494,6 +557,15 @@ void commands(){
	case 'w':
	write_file();
	break;
	+ case 'g':
	+ go_to(HOME);
	+ break;
	+ case 'G':
	+ go_to(END);
	+ break;
	+ case 'm':
	+ go_to(MIDDLE);
	+ break;
	case '-':
	toggle_hline();
	break;