From 62267b8424170f9b136892248a77dbed3fdcbbba Mon Sep 17 00:00:00 2001
From: KatolaZ <katolaz@freaknet.org>
Date: Fri, 9 Aug 2019 07:08:35 +0100
Subject: add read-at-point function

---
 TODO       |  7 ++++---
 draw.c     |  2 ++
 files.c    | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 gramscii.c |  5 +++++
 gramscii.h |  8 ++++++++
 screen.c   |  2 ++
 6 files changed, 68 insertions(+), 3 deletions(-)

diff --git a/TODO b/TODO
index 579ff78..d7e1535 100644
--- a/TODO
+++ b/TODO
@@ -1,8 +1,7 @@
 + optimize redraws (redraw only the modified rectangle)
-- fir bug in reading commands from files
+- fix bug in visual crop
+- fix bug in reading commands from files
 - add screen geometry option (-g 25x80?)
-- read file at point
-  - read output of command (!)
 - maybe move "text" mode to "t"
 - implement ellipse
 - (?) filled box (B)
@@ -17,6 +16,8 @@
 - allow scrolling (both vertical and horizontal)
 - catch SIGWINCH and react appropriately (after scrolling is 
   enabled)
+* read file at point
+  * read output of command (!)
 * fix bug with 'g' commands in arrow mode
 * undo (by storing lines changed across insert/remove operations)
   * re-organise undo-ring management
diff --git a/draw.c b/draw.c
index 8c30d56..49fad1b 100644
--- a/draw.c
+++ b/draw.c
@@ -1,3 +1,5 @@
+#define _POSIX_C_SOURCE 2 
+
 #include <stdlib.h>
 #include <string.h>
 
diff --git a/files.c b/files.c
index dfeb3b2..37aac48 100644
--- a/files.c
+++ b/files.c
@@ -1,3 +1,5 @@
+#define _POSIX_C_SOURCE 2 
+
 #include <stdio.h>
 #include <string.h>
 #include "gramscii.h"
@@ -37,6 +39,7 @@ void write_file(FILE *fc){
 	fclose(fout);
 	modified = 0;
 	get_key(fc, "File saved.");
+	redraw();
 }
 
 void check_modified(FILE *fc){
@@ -83,3 +86,47 @@ void new_file(FILE *fc){
 	modified=0;
 }
 
+void read_file_at(FILE *fc, int xl, int yl){
+
+	char nfname[512], tmp[512], *fptr, *tptr;
+	FILE *fin;
+	int i, j;
+	char ftype;
+
+	get_string(fc, "Read file: ", nfname, 511);
+	fptr = nfname;
+	while(*fptr && _isblank(*fptr))
+		 fptr ++;
+	if (*fptr == '!'){
+		fin = popen(++fptr, "r");
+		ftype = FPIPE;
+	}
+	else {
+		fin = fopen(fptr, "r");
+		ftype = FFILE;
+	}
+	if (fin != NULL){
+		copy_lines_to_ring(0, HEIGHT-1, PRV_STATE);
+		i = yl;
+		while((fgets(tmp, WIDTH+1, fin)) != NULL && i<HEIGHT){
+			j = xl;
+			tptr = tmp;
+			if (strlen(tmp))
+				tmp[strlen(tmp) - 1] = '\0';
+			ensure_line_length(& (screen.l[i]), xl + strlen(tmp) + 1);
+			while (*tptr && j < WIDTH){
+				set_xy(j, i, *tptr);
+				j++;
+				tptr ++;
+			}
+			i++;
+		}
+		if (ftype == FFILE)
+			fclose(fin);
+		else
+			pclose(fin);
+		modified = 1;
+		redraw();
+		copy_lines_to_ring(yl, i-1, NEW_STATE);
+	}
+}
diff --git a/gramscii.c b/gramscii.c
index 6dee819..8b84ec3 100644
--- a/gramscii.c
+++ b/gramscii.c
@@ -20,6 +20,8 @@
 *
 */
 
+#define _POSIX_C_SOURCE 2 
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <signal.h>
@@ -124,6 +126,9 @@ void commands(FILE *fc){
 				case 'U':
 					redo_change();
 					break;
+				case 'r':
+					read_file_at(fc, x, y);
+					break;
 				case 'q':
 					check_modified(fc);/** FALLTHROUGH **/
 				case 'Q':
diff --git a/gramscii.h b/gramscii.h
index 2ec7088..6419961 100644
--- a/gramscii.h
+++ b/gramscii.h
@@ -1,6 +1,8 @@
 #ifndef __GRAMSCII_H__
 #define __GRAMSCII_H__
 
+#define _POSIX_C_SOURCE 2 
+
 #include <stdio.h>
 #include <termios.h>
 #include <unistd.h>
@@ -58,6 +60,10 @@
 #define NEW_STATE 0x02
 /**/
 
+/* file types */
+#define FFILE 0x01
+#define FPIPE 0x02
+
 /** types **/
 
 typedef struct{
@@ -157,6 +163,7 @@ void go_to(int where);
 void crop_to_nonblank();
 void crop_to_rect();
 void erase_blank_lines(int y1, int y2);
+int _isblank(int c);
 /**/
 
 /** drawing-related functions **/
@@ -176,6 +183,7 @@ void write_file(FILE *fc);
 void check_modified(FILE *fc);
 void load_file(FILE *fc);
 void new_file(FILE *fc);
+void read_file_at(FILE *fc, int xl, int yl);
 /**/
 
 /** line-related functions **/
diff --git a/screen.c b/screen.c
index 3c69541..5b2adc6 100644
--- a/screen.c
+++ b/screen.c
@@ -1,3 +1,5 @@
+#define _POSIX_C_SOURCE 2 
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-- 
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