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#define ESC 0x1B
#define NONE(k) { .str = { k }, .code = 0 }
#define KEY(k) { .str = { '\0' }, .code = KEY_##k }
#define CONTROL(k) NONE((k)&0x1F)
#define META(k) { .str = { ESC, (k) }, .code = 0 }
#define BACKSPACE(func, arg) \
{ { KEY(BACKSPACE) }, (func), { .m = (arg) } }, \
{ { CONTROL('H') }, (func), { .m = (arg) } }, \
{ { NONE(127) }, (func), { .m = (arg) } }, \
{ { CONTROL('B') }, (func), { .m = (arg) } }
/* draw a statubar, do whatever you want with the given curses window */
static void statusbar(WINDOW *win, bool active, const char *filename, int line, int col) {
int width, height;
getmaxyx(win, height, width);
(void)height;
wattrset(win, active ? A_REVERSE|A_BOLD : A_REVERSE);
mvwhline(win, 0, 0, ' ', width);
mvwprintw(win, 0, 0, "%s", filename);
char buf[width + 1];
int len = snprintf(buf, width, "%d, %d", line, col);
if (len > 0) {
buf[len] = '\0';
mvwaddstr(win, 0, width - len - 1, buf);
}
}
static void switchmode(const Arg *arg);
enum {
VIS_MODE_BASIC,
VIS_MODE_MOVE,
VIS_MODE_NORMAL,
VIS_MODE_VISUAL,
VIS_MODE_INSERT,
VIS_MODE_REPLACE,
};
void quit(const Arg *arg) {
endwin();
exit(0);
}
static void split(const Arg *arg) {
editor_window_split(editor, arg->s);
}
static void mark_set(const Arg *arg) {
editor_mark_set(editor, arg->i, editor_cursor_get(editor));
}
static void mark_goto(const Arg *arg) {
editor_mark_goto(editor, arg->i);
}
/* use vim's
:help motion
:h operator
:h text-objects
as reference
*/
static KeyBinding movement[] = {
{ { KEY(LEFT) }, cursor, { .m = editor_char_prev } },
{ { KEY(RIGHT) }, cursor, { .m = editor_char_next } },
{ { KEY(UP) }, cursor, { .m = editor_line_up } },
{ { KEY(DOWN) }, cursor, { .m = editor_line_down } },
{ { KEY(PPAGE) }, cursor, { .m = editor_page_up } },
{ { KEY(NPAGE) }, cursor, { .m = editor_page_down } },
{ { KEY(HOME) }, cursor, { .m = editor_line_start } },
{ { KEY(END) }, cursor, { .m = editor_line_end } },
// temporary until we have a way to enter user commands
{ { CONTROL('c') }, quit, },
{ /* empty last element, array terminator */ },
};
static KeyBinding vis_movement[] = {
BACKSPACE( cursor, editor_char_prev ),
{ { NONE(' ') }, cursor, { .m = editor_char_next } },
{ { CONTROL('w'), NONE('c') }, split, { .s = NULL } },
{ { CONTROL('w'), NONE('j') }, call, { .f = editor_window_next } },
{ { CONTROL('w'), NONE('k') }, call, { .f = editor_window_prev } },
{ { NONE('h') }, cursor, { .m = editor_char_prev } },
{ { NONE('l') }, cursor, { .m = editor_char_next } },
{ { NONE('k') }, cursor, { .m = editor_line_up } },
{ { CONTROL('P') }, cursor, { .m = editor_line_up } },
{ { NONE('j') }, cursor, { .m = editor_line_down } },
{ { CONTROL('J') }, cursor, { .m = editor_line_down } },
{ { CONTROL('N') }, cursor, { .m = editor_line_down } },
{ { KEY(ENTER) }, cursor, { .m = editor_line_down } },
{ { NONE('0') }, cursor, { .m = editor_line_begin } },
{ { NONE('^') }, cursor, { .m = editor_line_start } },
{ { NONE('g'), NONE('_') }, cursor, { .m = editor_line_finish } },
{ { NONE('$') }, cursor, { .m = editor_line_end } },
{ { CONTROL('F') }, cursor, { .m = editor_page_up } },
{ { CONTROL('B') }, cursor, { .m = editor_page_down } },
{ { NONE('%') }, cursor, { .m = editor_bracket_match } },
{ { NONE('b') }, cursor, { .m = editor_word_start_prev } },
{ { KEY(SLEFT) }, cursor, { .m = editor_word_start_prev } },
{ { NONE('w') }, cursor, { .m = editor_word_start_next } },
{ { KEY(SRIGHT) }, cursor, { .m = editor_word_start_next } },
{ { NONE('g'), NONE('e') }, cursor, { .m = editor_word_end_prev } },
{ { NONE('e') }, cursor, { .m = editor_word_end_next } },
{ { NONE('}') }, cursor, { .m = editor_paragraph_next } },
{ { NONE('{') }, cursor, { .m = editor_paragraph_prev } },
{ { NONE(')') }, cursor, { .m = editor_sentence_next } },
{ { NONE('(') }, cursor, { .m = editor_sentence_prev } },
{ { NONE('g'), NONE('g') }, cursor, { .m = editor_file_begin } },
{ { NONE('G') }, cursor, { .m = editor_file_end } },
{ /* empty last element, array terminator */ },
};
static KeyBinding vis_normal[] = {
{ { NONE('x') }, cursor, { .m = editor_delete } },
{ { NONE('i') }, switchmode, { .i = VIS_MODE_INSERT } },
{ { NONE('v') }, switchmode, { .i = VIS_MODE_VISUAL } },
{ { NONE('R') }, switchmode, { .i = VIS_MODE_REPLACE} },
{ { NONE('u') }, call, { .f = editor_undo } },
{ { CONTROL('R') }, call, { .f = editor_redo } },
{ { CONTROL('L') }, call, { .f = editor_draw } },
// DEMO STUFF
{ { NONE('n') }, find_forward, { .s = "if" } },
{ { NONE('p') }, find_backward, { .s = "if" } },
{ { NONE('5') }, line, { .i = 50 } },
{ { NONE('s') }, mark_set, { .i = 0 } },
{ { NONE('9') }, mark_goto, { .i = 0 } },
{ /* empty last element, array terminator */ },
};
static KeyBinding vis_visual[] = {
{ { NONE(ESC) }, switchmode, { .i = VIS_MODE_NORMAL } },
{ /* empty last element, array terminator */ },
};
static void vis_visual_enter(void) {
editor_selection_start(editor);
}
static void vis_visual_leave(void) {
editor_selection_clear(editor);
}
static KeyBinding vis_insert[] = {
{ { NONE(ESC) }, switchmode, { .i = VIS_MODE_NORMAL } },
{ { CONTROL('D') }, cursor, { .m = editor_delete } },
BACKSPACE( cursor, editor_backspace ),
{ /* empty last element, array terminator */ },
};
static bool vis_insert_input(const char *str, size_t len) {
editor_insert(editor, str, len);
return true;
}
static KeyBinding vis_replace[] = {
{ { NONE(ESC) }, switchmode, { .i = VIS_MODE_NORMAL } },
{ { CONTROL('D') }, cursor, { .m = editor_delete } },
BACKSPACE( cursor, editor_backspace ),
{ /* empty last element, array terminator */ },
};
static bool vis_replace_input(const char *str, size_t len) {
editor_replace(editor, str, len);
return true;
}
static Mode vis[] = {
[VIS_MODE_BASIC] = {
.parent = NULL,
.bindings = movement,
},
[VIS_MODE_MOVE] = {
.parent = &vis[VIS_MODE_BASIC],
.bindings = vis_movement,
},
[VIS_MODE_NORMAL] = {
.parent = &vis[VIS_MODE_MOVE],
.bindings = vis_normal,
},
[VIS_MODE_VISUAL] = {
.name = "VISUAL",
.parent = &vis[VIS_MODE_MOVE],
.bindings = vis_visual,
.enter = vis_visual_enter,
.leave = vis_visual_leave,
},
[VIS_MODE_INSERT] = {
.name = "INSERT",
.parent = &vis[VIS_MODE_BASIC],
.bindings = vis_insert,
.input = vis_insert_input,
},
[VIS_MODE_REPLACE] = {
.name = "REPLACE",
.parent = &vis[VIS_MODE_BASIC],
.bindings = vis_replace,
.input = vis_replace_input,
},
};
static void switchmode(const Arg *arg) {
if (mode->leave)
mode->leave();
mode = &vis[arg->i];
if (mode->enter)
mode->enter();
// TODO display mode name somewhere?
}
/* incomplete list of usefule but currently missing functionality from nanos help ^G:
^X (F2) Close the current file buffer / Exit from nano
^O (F3) Write the current file to disk
^J (F4) Justify the current paragraph
^R (F5) Insert another file into the current one
^W (F6) Search for a string or a regular expression
^K (F9) Cut the current line and store it in the cutbuffer
^U (F10) Uncut from the cutbuffer into the current line
^T (F12) Invoke the spell checker, if available
^_ (F13) (M-G) Go to line and column number
^\ (F14) (M-R) Replace a string or a regular expression
^^ (F15) (M-A) Mark text at the cursor position
M-W (F16) Repeat last search
M-^ (M-6) Copy the current line and store it in the cutbuffer
M-V Insert the next keystroke verbatim
XXX: CONTROL(' ') = 0, ^Space Go forward one word
*/
/* key binding configuration */
#if 1
static KeyBinding nano_keys[] = {
{ { CONTROL('D') }, cursor, { .m = editor_delete } },
BACKSPACE( cursor, editor_backspace ),
{ { KEY(LEFT) }, cursor, { .m = editor_char_prev } },
{ { KEY(RIGHT) }, cursor, { .m = editor_char_next } },
{ { CONTROL('F') }, cursor, { .m = editor_char_next } },
{ { KEY(UP) }, cursor, { .m = editor_line_up } },
{ { CONTROL('P') }, cursor, { .m = editor_line_up } },
{ { KEY(DOWN) }, cursor, { .m = editor_line_down } },
{ { CONTROL('N') }, cursor, { .m = editor_line_down } },
{ { KEY(PPAGE) }, cursor, { .m = editor_page_up } },
{ { CONTROL('Y') }, cursor, { .m = editor_page_up } },
{ { KEY(F(7)) }, cursor, { .m = editor_page_up } },
{ { KEY(NPAGE) }, cursor, { .m = editor_page_down } },
{ { CONTROL('V') }, cursor, { .m = editor_page_down } },
{ { KEY(F(8)) }, cursor, { .m = editor_page_down } },
// { { CONTROL(' ') }, cursor, { .m = editor_word_start_next } },
{ { META(' ') }, cursor, { .m = editor_word_start_prev } },
{ { CONTROL('A') }, cursor, { .m = editor_line_start } },
{ { CONTROL('E') }, cursor, { .m = editor_line_end } },
{ { META(']') }, cursor, { .m = editor_bracket_match } },
{ { META(')') }, cursor, { .m = editor_paragraph_next } },
{ { META('(') }, cursor, { .m = editor_paragraph_prev } },
{ { META('\\') }, cursor, { .m = editor_file_begin } },
{ { META('|') }, cursor, { .m = editor_file_begin } },
{ { META('/') }, cursor, { .m = editor_file_end } },
{ { META('?') }, cursor, { .m = editor_file_end } },
{ { META('U') }, call, { .f = editor_undo } },
{ { META('E') }, call, { .f = editor_redo } },
{ { CONTROL('I') }, insert, { .s = "\t" } },
/* TODO: handle this in editor to insert \n\r when appriopriate */
{ { CONTROL('M') }, insert, { .s = "\n" } },
{ { CONTROL('L') }, call, { .f = editor_draw } },
{ /* empty last element, array terminator */ },
};
#endif
static Mode nano[] = {
{ .parent = NULL, .bindings = movement, },
{ .parent = &nano[0], .bindings = nano_keys, .input = vis_insert_input, },
};
/* list of editor configurations, first entry is default. name is matched with
* argv[0] i.e. program name upon execution
*/
static Config editors[] = {
{ .name = "vis", .mode = &vis[VIS_MODE_NORMAL] },
{ .name = "nano", .mode = &nano[1] },
};
/* Color definitions, by default the i-th color is used for the i-th syntax
* rule below. A color value of -1 specifies the default terminal color.
*/
static Color colors[] = {
{ .fg = COLOR_RED, .bg = -1, .attr = A_BOLD },
{ .fg = COLOR_GREEN, .bg = -1, .attr = A_BOLD },
{ .fg = COLOR_GREEN, .bg = -1, .attr = A_NORMAL },
{ .fg = COLOR_MAGENTA, .bg = -1, .attr = A_BOLD },
{ .fg = COLOR_MAGENTA, .bg = -1, .attr = A_NORMAL },
{ .fg = COLOR_BLUE, .bg = -1, .attr = A_BOLD },
{ .fg = COLOR_RED, .bg = -1, .attr = A_NORMAL },
{ .fg = COLOR_BLUE, .bg = -1, .attr = A_NORMAL },
{ .fg = COLOR_BLUE, .bg = -1, .attr = A_NORMAL },
{ /* empty last element, array terminator */ }
};
/* Syntax color definition, you can define up to SYNTAX_REGEX_RULES
* number of regex rules per file type. Each rule is requires a regular
* expression and corresponding compilation flags. Optionally a color in
* the form
*
* { .fg = COLOR_YELLOW, .bg = -1, .attr = A_BOLD }
*
* can be specified. If such a color definition is missing the i-th element
* of the colors array above is used instead.
*
* The array of syntax definition must be terminated with an empty element.
*/
#define B "\\b"
/* Use this if \b is not in your libc's regex implementation */
// #define B "^| |\t|\\(|\\)|\\[|\\]|\\{|\\}|\\||$
// changes wrt sandy #precoressor: # idfdef, #include <file.h> between brackets
static Syntax syntaxes[] = {{
.name = "c",
.file = "\\.(c(pp|xx)?|h(pp|xx)?|cc)$",
.rules = {{
"$^",
REG_NEWLINE,
},{
B"(for|if|while|do|else|case|default|switch|try|throw|catch|operator|new|delete)"B,
REG_NEWLINE,
},{
B"(float|double|bool|char|int|short|long|sizeof|enum|void|static|const|struct|union|"
"typedef|extern|(un)?signed|inline|((s?size)|((u_?)?int(8|16|32|64|ptr)))_t|class|"
"namespace|template|public|protected|private|typename|this|friend|virtual|using|"
"mutable|volatile|register|explicit)"B,
REG_NEWLINE,
},{
B"(goto|continue|break|return)"B,
REG_NEWLINE,
},{
"(^#[\\t ]*(define|include(_next)?|(un|ifn?)def|endif|el(if|se)|if|warning|error|pragma))|"
B"[A-Z_][0-9A-Z_]+"B"",
REG_NEWLINE,
},{
"(\\(|\\)|\\{|\\}|\\[|\\])",
REG_NEWLINE,
},{
"(\"(\\\\.|[^\"])*\")",
//"([\"<](\\\\.|[^ \">])*[\">])",
REG_NEWLINE,
},{
"(//.*)",
REG_NEWLINE,
},{
"(/\\*([^*]|\\*[^/])*\\*/|/\\*([^*]|\\*[^/])*$|^([^/]|/[^*])*\\*/)",
}},
},{
/* empty last element, array terminator */
}};
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