Fully fonctional editing

Makefile

@@ -6,15 +6,11 @@
 
 BELUGA_OUTPUT=bin
 
-BUILD_DIR=build
-
 BUILD_FLAGS=-Wall -Wextra -pedantic
 
 build: main.c src/*
 	if [ ! -d $(BELUGA_OUTPUT) ]; then mkdir $(BELUGA_OUTPUT); fi
-	if [ ! -d doc/ ]; then mkdir doc; fi
-	$(CC) main.c -o $(BELUGA_OUTPUT)/beluga src/*
-	doxygen
+	$(CC) main.c -o $(BELUGA_OUTPUT)/beluga src/* $(BUILD_FLAGS)
 
 DEBUG_FLAGS=-Wall -Wextra -pedantic -Werror -fsanitize=address -g
 
@@ -22,8 +18,15 @@ debug:  main.c src/*
 	if [ ! -d $(BELUGA_OUTPUT) ]; then mkdir $(BELUGA_OUTPUT); fi
 	$(CC) main.c -o $(BELUGA_OUTPUT)/beluga src/* $(DEBUG_FLAGS)
 
+doc:
+	if [ ! -d doc/ ]; then mkdir doc; fi
+	doxygen
+
 clean:
-	rm -r $(BELUGA_OUTPUT)/*
+	rm -r $(BELUGA_OUTPUT)
 	rm -rf doc/
+	rm -rf tmp/
+
+all: build doc
 
 # end

README.md

@@ -1,3 +1,25 @@
 # Beluga
 
 Beluga is a project of CLI text editor that will fit perfectly with your azerty keyboard.
+
+## Requirements
+
+You will only need **make** or **gcc** to compile the editor.
+
+## Installation
+
+Here is the installation line :
+```git clone https://github.com/le-cocotier/beluga.git ~/.beluga && cd ~/.beluga && make build```
+
+The executable file will be in `bin/beluga`. Feel free to add it to your path.
+
+You can either run `make all` if you're interested by the doxygen documentation.
+
+## Getting start
+
+To open an existing file just type :
+```beluga path_to_my_file```
+
+The only keybinds that you will need will be :
+ - Ctrl-Q : leave the editor
+ - Ctrl-S : Save a file

include/data.h

@@ -30,6 +30,7 @@ struct editorConfig {
   int screencols;         /**< Terminal width*/
   int numrows;            /**< Number of rows contained */
   erow *row;              /**< Store all the rows printed */
+  int dirty;
   char *filename;
   char status_msg[80];
   time_t status_msg_time;

include/define.h

@@ -3,6 +3,7 @@
 
 #define CTRL_KEY(k) ((k) & 0x1f)
 
+#define ESCAPE '\x1b'
 #define CURSOR_TOP_LEFT "\x1b[H"
 #define HIDE_CURSOR "\x1b[?25l"
 #define SHOW_CURSOR "\x1b[?25h"
@@ -10,12 +11,12 @@
 
 enum editorKey {
   BACKSPACE = 127,
-  CURSOR_LEFT = 1000,
-  CURSOR_RIGHT,
-  CURSOR_UP,
-  CURSOR_DOWN,
+  ARROW_LEFT = 1000,
+  ARROW_RIGHT,
+  ARROW_UP,
+  ARROW_DOWN,
+  DEL_KEY,
   BEG_LINE,
-  DELETE,
   END_LINE,
   PAGE_UP,
   PAGE_DOWN,
@@ -23,7 +24,8 @@ enum editorKey {
 
 #define ABUF_INIT {NULL, 0}
 
-#define BELUGA_VERSION "0.1"
-#define TAB_LENGTH 8
+#define BELUGA_VERSION "1.0"
+#define TAB_LENGTH 4
+#define QUIT_TIMES 1
 
 #endif // DEFINE_H_

include/editor_op.h

@@ -4,4 +4,8 @@
 #include "data.h"
 void editorInsertChar(struct editorConfig *E, int c);
 
+void editorInsertNewLine(struct editorConfig *E);
+
+void editorDelChar(struct editorConfig *E);
+
 #endif // EDITOR_OP_H_

include/input.h

@@ -3,6 +3,7 @@
 
 #include "data.h"
 #include "define.h"
+#include "output.h"
 #include "terminal.h"
 #include <unistd.h>
 
@@ -18,6 +19,8 @@
 // END \x1b[4~ || <esc>[8~ || <esc>[F  || <esc>OF
 // DELETE \x1b[3~
 
+char *editorPrompt(struct editorConfig *E, char *prompt);
+
 void editorMoveCursor(struct editorConfig *E, int key);
 
 /**

include/row_op.h

@@ -5,14 +5,24 @@
 #include "define.h"
 #include <stdlib.h>
 #include <string.h>
+#include <time.h>
 #include <unistd.h>
 
 int editorRowCxToRx(erow *row, int cursor_x);
 
 void editorUpdateRow(erow *row);
 
-void editorAppendRow(struct editorConfig *E, char *s, size_t len);
+void editorInsertRow(struct editorConfig *E, int at, char *s, size_t len);
 
-void editorRowInsertChar(erow *row, int at, int c);
+void editorFreeRow(erow *row);
+
+void editorDelRow(struct editorConfig *E, int at);
+
+void editorRowInsertChar(struct editorConfig *E, erow *row, int at, int c);
+
+void editorRowAppendString(struct editorConfig *E, erow *row, char *s,
+                           size_t len);
+
+void editorRowDelchar(struct editorConfig *E, erow *row, int at);
 
 #endif // ROW_OP_H_

main.c

@@ -26,7 +26,7 @@ int main(int argc, char *argv[]) {
     editorOpen(&E, argv[1]);
   }
 
-  editorSetStatusMessage(&E, "HELP: Ctrl-Q = quit");
+  editorSetStatusMessage(&E, "HELP: Ctrl-S = save | Ctrl-Q = quit");
 
   while (1) {
     editorRefreshScreen(&E);

src/editor_op.c

@@ -3,8 +3,42 @@
 
 void editorInsertChar(struct editorConfig *E, int c) {
   if (E->cursor_y == E->numrows) {
-    editorAppendRow(E, "", 0);
+    editorInsertRow(E, E->numrows, "", 0);
   }
-  editorRowInsertChar(&E->row[E->cursor_y], E->cursor_x, c);
+  editorRowInsertChar(E, &E->row[E->cursor_y], E->cursor_x, c);
   E->cursor_x++;
 }
+
+void editorInsertNewLine(struct editorConfig *E) {
+  erow *row;
+  if (!E->cursor_x) {
+    editorInsertRow(E, E->cursor_y, "", 0);
+  } else {
+    row = &E->row[E->cursor_y];
+    editorInsertRow(E, E->cursor_y + 1, &row->chars[E->cursor_x],
+                    row->size - E->cursor_x);
+    row = &E->row[E->cursor_y];
+    row->size = E->cursor_x;
+    row->chars[row->size] = '\0';
+    editorUpdateRow(row);
+  }
+  ++E->cursor_y;
+  E->cursor_x = 0;
+}
+
+void editorDelChar(struct editorConfig *E) {
+  erow *row;
+  if (E->cursor_y == E->numrows || !(E->cursor_x || E->cursor_y)) {
+    return;
+  }
+  row = &E->row[E->cursor_y];
+  if (E->cursor_x > 0) {
+    editorRowDelchar(E, row, E->cursor_x - 1);
+    --E->cursor_x;
+  } else {
+    E->cursor_x = E->row[E->cursor_y - 1].size;
+    editorRowAppendString(E, &E->row[E->cursor_y - 1], row->chars, row->size);
+    editorDelRow(E, E->cursor_y);
+    --E->cursor_y;
+  }
+}

src/file_io.c

@@ -1,4 +1,6 @@
 #include "../include/file_io.h"
+#include "../include/input.h"
+#include "../include/output.h"
 #include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -47,10 +49,11 @@ void editorOpen(struct editorConfig *E, char *filename) {
            (line[line_len - 1] == '\n' || line[line_len - 1] == '\r')) {
       --line_len;
     }
-    editorAppendRow(E, line, line_len);
+    editorInsertRow(E, E->numrows, line, line_len);
   }
   free(line);
   fclose(fp);
+  E->dirty = 0;
 }
 
 void editorSave(struct editorConfig *E) {
@@ -58,12 +61,26 @@ void editorSave(struct editorConfig *E) {
   char *buf;
   int fd;
   if (E->filename == NULL) {
-    return;
+    E->filename = editorPrompt(E, "Save as: %s (ESC to cancel)");
+    if (E->filename == NULL) {
+      editorSetStatusMessage(E, "Save aborted");
+      return;
+    }
   }
   buf = editorRowsToString(E, &len);
   fd = open(E->filename, O_RDWR | O_CREAT, 0644);
-  ftruncate(fd, len);
-  write(fd, buf, len);
-  close(fd);
+  if (fd != -1) {
+    if (ftruncate(fd, len) != -1) {
+      if (write(fd, buf, len) == len) {
+        close(fd);
+        free(buf);
+        E->dirty = 0;
+        editorSetStatusMessage(E, "%d bytes written to disk", len);
+        return;
+      }
+    }
+    close(fd);
+  }
   free(buf);
+  editorSetStatusMessage(E, "Can't save! I/O error: %s", strerror(errno));
 }

src/init.c

@@ -8,6 +8,7 @@ void initEditor(struct editorConfig *E) {
   E->col_offset = 0;
   E->numrows = 0;
   E->row = NULL;
+  E->dirty = 0;
   E->filename = NULL;
   E->status_msg[0] = '\0';
   E->status_msg_time = 0;

src/input.c

@@ -1,13 +1,58 @@
 #include "../include/input.h"
 #include "../include/editor_op.h"
 #include "../include/file_io.h"
+#include "../include/output.h"
+#include <ctype.h>
 #include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+/**
+ * \fn char * editorPrompt(struct editorConfig *E, char *prompt)
+ * \brief Return user input in a prompt when enter is hit. */
+
+char *editorPrompt(struct editorConfig *E, char *prompt) {
+  size_t buf_size = 128;
+  char *buf = malloc(buf_size);
+  size_t buf_len = 0;
+  int c = 0;
+  buf[0] = '\0';
+
+  while (1) {
+    editorSetStatusMessage(E, prompt, buf);
+    editorRefreshScreen(E);
+    c = editorReadKey();
+    if (c == DEL_KEY || c == CTRL_KEY('h') || c == BACKSPACE) {
+      if (buf_len != 0) {
+        buf[--buf_len] = '\0';
+      }
+    } else if (c == ESCAPE) {
+      fprintf(stderr, "escape");
+      editorSetStatusMessage(E, "");
+      free(buf);
+      return NULL;
+    } else if (c == '\r') {
+      if (buf_len != 0) {
+        editorSetStatusMessage(E, "");
+        return buf;
+      }
+    } else if (!iscntrl(c) && c < 128) {
+      if (buf_len == buf_size - 1) {
+        buf_size *= 2;
+        buf = realloc(buf, buf_size);
+      }
+      buf[buf_len++] = c;
+      buf[buf_len] = '\0';
+    }
+  }
+}
 
 void editorMoveCursor(struct editorConfig *E, int key) {
   erow *row = (E->cursor_y >= E->numrows) ? NULL : &E->row[E->cursor_y];
   int row_len;
   switch (key) {
-  case CURSOR_RIGHT:
+  case ARROW_RIGHT:
     if (row && E->cursor_x < row->size) {
       ++E->cursor_x;
     } else if (row && E->cursor_x == row->size) {
@@ -15,17 +60,17 @@ void editorMoveCursor(struct editorConfig *E, int key) {
       E->cursor_x = 0;
     }
     break;
-  case CURSOR_DOWN:
+  case ARROW_DOWN:
     if (E->cursor_y < E->numrows) {
       ++E->cursor_y;
     }
     break;
-  case CURSOR_UP:
+  case ARROW_UP:
     if (E->cursor_y != 0) {
       --E->cursor_y;
     }
     break;
-  case CURSOR_LEFT:
+  case ARROW_LEFT:
     if (E->cursor_x != 0) {
       --E->cursor_x;
     } else if (E->cursor_y > 0) {
@@ -43,14 +88,23 @@ void editorMoveCursor(struct editorConfig *E, int key) {
 }
 
 void editorProcessKeypress(struct editorConfig *E) {
+  static int quit_times = QUIT_TIMES;
   int c = editorReadKey();
   int times;
 
   switch (c) {
+
   case '\r':
-    /* TODO */
+    editorInsertNewLine(E);
     break;
   case CTRL_KEY('q'):
+    if (E->dirty && quit_times > 0) {
+      editorSetStatusMessage(E,
+                             "WARNING! Changes hasn't been saved. Press Ctrl-Q "
+                             "another time to quit.");
+      --quit_times;
+      return;
+    }
     write(STDOUT_FILENO, "\x1b[2J", 4);
     write(STDOUT_FILENO, CURSOR_TOP_LEFT, 3);
     disableRawMode(E);
@@ -73,8 +127,11 @@ void editorProcessKeypress(struct editorConfig *E) {
 
   case BACKSPACE:
   case CTRL_KEY('h'):
-    // case DEL_KEY:
-    /* TODO */
+  case DEL_KEY:
+    if (c == DEL_KEY) {
+      editorMoveCursor(E, ARROW_RIGHT);
+    }
+    editorDelChar(E);
     break;
 
   case PAGE_UP:
@@ -89,14 +146,14 @@ void editorProcessKeypress(struct editorConfig *E) {
     }
     times = E->screenrows;
     while (--times) {
-      editorMoveCursor(E, c == PAGE_UP ? CURSOR_UP : CURSOR_DOWN);
+      editorMoveCursor(E, c == PAGE_UP ? ARROW_UP : ARROW_DOWN);
     }
   } break;
 
-  case CURSOR_UP:
-  case CURSOR_DOWN:
-  case CURSOR_LEFT:
-  case CURSOR_RIGHT:
+  case ARROW_UP:
+  case ARROW_DOWN:
+  case ARROW_LEFT:
+  case ARROW_RIGHT:
     editorMoveCursor(E, c);
     break;
 
@@ -107,4 +164,5 @@ void editorProcessKeypress(struct editorConfig *E) {
     editorInsertChar(E, c);
     break;
   }
+  quit_times = QUIT_TIMES;
 }

src/output.c

@@ -71,8 +71,9 @@ void editorDrawStatusBar(struct editorConfig *E, struct abuf *ab) {
   char status[80], render_status[80];
 
   abAppend(ab, "\x1b[7m", 4); // inverting colors
-  len = snprintf(status, sizeof(status), "%.20s - %d lines",
-                 E->filename ? E->filename : "[No Name]", E->numrows);
+  len = snprintf(status, sizeof(status), "%.20s - %d lines%s",
+                 E->filename ? E->filename : "[No Name]", E->numrows,
+                 E->dirty ? "*" : "");
   render_len = snprintf(render_status, sizeof(render_status), "%d/%d",
                         E->cursor_y + 1, E->numrows);
   if (len > E->screencols) {

src/row_op.c

@@ -1,6 +1,7 @@
 #include "../include/row_op.h"
 #include <stdlib.h>
 #include <string.h>
+#include <time.h>
 
 int editorRowCxToRx(erow *row, int cursor_x) {
   int render_x = 0;
@@ -52,11 +53,14 @@ void editorUpdateRow(erow *row) {
   row->rsize = i_render;
 }
 
-void editorAppendRow(struct editorConfig *E, char *s, size_t len) {
-  int at;
-  E->row = realloc(E->row, sizeof(erow) * (E->numrows + 1));
+void editorInsertRow(struct editorConfig *E, int at, char *s, size_t len) {
+  if (at < 0 || at > E->numrows) {
+    return;
+  }
+
+  E->row = realloc(E->row, sizeof(erow) * (E->numrows + 1));
+  memmove(&E->row[at + 1], &E->row[at], sizeof(erow) * (E->numrows - at));
 
-  at = E->numrows;
   E->row[at].size = len;
   E->row[at].chars = malloc(len + 1);
   memcpy(E->row[at].chars, s, len);
@@ -67,13 +71,29 @@ void editorAppendRow(struct editorConfig *E, char *s, size_t len) {
   editorUpdateRow(&E->row[at]);
 
   ++E->numrows;
+  ++E->dirty;
+}
+
+void editorFreeRow(erow *row) {
+  free(row->render);
+  free(row->chars);
+}
+
+void editorDelRow(struct editorConfig *E, int at) {
+  if (at < 0 || at >= E->numrows) {
+    return;
+  }
+  editorFreeRow(&E->row[at]);
+  memmove(&E->row[at], &E->row[at + 1], sizeof(erow) * (E->numrows - at - 1));
+  --E->numrows;
+  ++E->dirty;
 }
 
 /**
  * \fn editorRowInsertChar(erow *row, int at, int c)
  * \param at Index of where we want to insert the char */
 
-void editorRowInsertChar(erow *row, int at, int c) {
+void editorRowInsertChar(struct editorConfig *E, erow *row, int at, int c) {
   if (at < 0 || at > row->size) {
     at = row->size;
   }
@@ -82,4 +102,30 @@ void editorRowInsertChar(erow *row, int at, int c) {
   ++row->size;
   row->chars[at] = c;
   editorUpdateRow(row);
+  ++E->dirty;
+}
+
+void editorRowAppendString(struct editorConfig *E, erow *row, char *s,
+                           size_t len) {
+  row->chars = realloc(row->chars, row->size + len + 1);
+  memcpy(&row->chars[row->size], s, len);
+  row->size += len;
+  row->chars[row->size] = '\0';
+  editorUpdateRow(row);
+  ++E->dirty;
+}
+
+/**
+ * \fn editorRowDelChar(struct editorConfig *E, erow *erow, int at)
+ * \brief Delete the a char at the chosen position on the given row
+ * \param at Index of the char to delete
+ * \param row Row on operation is made */
+void editorRowDelchar(struct editorConfig *E, erow *row, int at) {
+  if (at < 0 || at >= row->size) {
+    return;
+  }
+  memmove(&row->chars[at], &row->chars[at + 1], row->size - at);
+  --row->size;
+  editorUpdateRow(row);
+  ++E->dirty;
 }

src/terminal.c

@@ -56,7 +56,7 @@ int editorReadKey() {
           case '1':
             return BEG_LINE;
           case '3':
-            return DELETE;
+            return DEL_KEY;
           case '4':
             return END_LINE;
           case '5':
@@ -73,13 +73,13 @@ int editorReadKey() {
 
         switch (seq[1]) {
         case 'A':
-          return CURSOR_UP;
+          return ARROW_UP;
         case 'B':
-          return CURSOR_DOWN;
+          return ARROW_DOWN;
         case 'C':
-          return CURSOR_RIGHT;
+          return ARROW_RIGHT;
         case 'D':
-          return CURSOR_LEFT;
+          return ARROW_LEFT;
         case 'H':
           return BEG_LINE;
         case 'F':