testing stuff, finish text viewing basically

+ test.txt has tabstoppage to test rendering
+ home/end/status line
This commit is contained in:
Kyle Isom 2020-02-11 03:01:21 +02:00
parent a38a4a72e2
commit 388af0ecc0
5 changed files with 150 additions and 14 deletions

View File

@ -22,5 +22,8 @@ run: $(BIN)
reset
./$(BIN) notes.txt
keypress: keypress.c
$(CC) $(CFLAGS) $(LDFLAGS) -o $@ keypress.c
%.o: %.c
$(CC) $(CFLAGS) -c $@ $<

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@ -21,3 +21,6 @@ l reset mode
~ special keys?
5: pgup
6: pgdn
m coloring
7m: inverted
default: normal

47
ke/keypress.c Normal file
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@ -0,0 +1,47 @@
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <termios.h>
#include <unistd.h>
struct termios orig_termios;
void
disableRawMode()
{
tcsetattr(STDIN_FILENO, TCSAFLUSH, &orig_termios);
}
void
enableRawMode()
{
tcgetattr(STDIN_FILENO, &orig_termios);
atexit(disableRawMode);
struct termios raw = orig_termios;
raw.c_lflag &= ~(ECHO | ICANON);
tcsetattr(STDIN_FILENO, TCSAFLUSH, &raw);
}
int
main()
{
enableRawMode();
char c;
while (read(STDIN_FILENO, &c, 1) == 1 && c != 'q') {
if (iscntrl(c)) {
printf("$%02x\n", c);
} else {
printf("$%02x ('%c')\n", c, c);
}
}
return 0;
}

110
ke/main.c
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@ -7,10 +7,12 @@
#include <sys/ioctl.h>
#include <ctype.h>
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <time.h>
#include <unistd.h>
@ -18,6 +20,7 @@
#define ESCSEQ "\x1b["
#define CTRL_KEY(key) ((key)&0x1f)
#define TAB_STOP 8
#define MSG_TIMEO 5
/*
* define the keyboard input modes
@ -61,6 +64,9 @@ struct {
int nrows;
int rowoffs, coloffs;
erow *row;
char *filename;
char msg[80];
time_t msgtm;
} editor;
@ -207,6 +213,9 @@ open_file(const char *filename)
}
}
free(editor.filename);
editor.filename = strdup(filename);
free(line);
fclose(fp);
}
@ -216,18 +225,20 @@ uint16_t
is_arrow_key(int16_t c)
{
switch (c) {
case ARROW_UP:
case ARROW_DOWN:
case ARROW_LEFT:
case ARROW_RIGHT:
case ARROW_UP:
case CTRL_KEY('p'):
case CTRL_KEY('n'):
case CTRL_KEY('f'):
case CTRL_KEY('b'):
case PG_UP:
case PG_DN:
case HOME_KEY:
case CTRL_KEY('a'):
case CTRL_KEY('e'):
case END_KEY:
case HOME_KEY:
case PG_DN:
case PG_UP:
return 1;
};
@ -256,8 +267,9 @@ get_keypress()
if (seq[2] == '~') {
switch (seq[1]) {
case '1': return HOME_KEY;
case '2': return END_KEY;
case '2': return /* INS_KEY */ c;
case '3': return DEL_KEY;
case '4': return END_KEY;
case '5': return PG_UP;
case '6': return PG_DN;
case '7': return HOME_KEY;
@ -347,10 +359,12 @@ move_cursor(int16_t c)
}
case HOME_KEY:
case CTRL_KEY('a'):
editor.curx = 0;
break;
case END_KEY:
editor.curx = editor.cols - 1;
case CTRL_KEY('e'):
editor.curx = editor.row[editor.cury].size;
break;
default:
break;
@ -385,14 +399,14 @@ process_kcommand(int16_t c)
}
void
int
process_keypress()
{
int16_t c = get_keypress();
/* we didn't actually read a key */
if (c <= 0) {
return;
return 0;
}
switch (editor.mode) {
@ -407,8 +421,10 @@ process_keypress()
if (c == CTRL_KEY('k')) {
editor.mode = MODE_KCOMMAND;
return;
return 1;
}
return 1;
}
@ -527,13 +543,55 @@ draw_rows(struct abuf *ab)
buflen);
}
ab_append(ab, ESCSEQ "K", 3);
if (y < (editor.rows - 1)) {
ab_append(ab, "\r\n", 2);
}
ab_append(ab, "\r\n", 2);
}
}
void
draw_status_bar(struct abuf *ab)
{
static int updates = 0;
char status[editor.cols];
char rstatus[editor.cols];
int len, rlen;
len = snprintf(status, sizeof(status), "%.20s - %d lines - %d updates",
editor.filename ? editor.filename : "[no file]",
editor.nrows, updates++);
rlen = snprintf(rstatus, sizeof(rstatus), "L%d/%d C%d",
editor.cury+1, editor.nrows, editor.curx+1);
ab_append(ab, ESCSEQ "7m", 4);
ab_append(ab, status, len);
while (len < editor.cols) {
if ((editor.cols - len) == rlen) {
ab_append(ab, rstatus, rlen);
break;
}
ab_append(ab, " ", 1);
len++;
}
ab_append(ab, ESCSEQ "m", 3);
ab_append(ab, "\r\n", 2);
}
void
draw_message_line(struct abuf *ab)
{
int len = strlen(editor.msg);
ab_append(ab, ESCSEQ "K", 3);
if (len > editor.cols) {
len = editor.cols;
}
if (len && ((time(NULL) - editor.msgtm) < MSG_TIMEO)) {
ab_append(ab, editor.msg, len);
}
}
int
row_render_to_cursor(erow *row, int cx)
@ -591,6 +649,8 @@ display_refresh()
display_clear(&ab);
draw_rows(&ab);
draw_status_bar(&ab);
draw_message_line(&ab);
snprintf(buf, sizeof(buf), ESCSEQ "%d;%dH",
(editor.cury-editor.rowoffs)+1,
@ -604,12 +664,27 @@ display_refresh()
}
void
editor_set_status(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vsnprintf(editor.msg, sizeof(editor.msg), fmt, ap);
va_end(ap);
editor.msgtm = time(NULL);
}
void
loop()
{
int up = 1;
while (1) {
display_refresh();
process_keypress();
if (up) display_refresh();
up = process_keypress();
}
}
@ -623,6 +698,8 @@ init_editor()
if (get_winsz(&editor.rows, &editor.cols) == -1) {
die("can't get window size");
}
editor.rows--; /* status bar */
editor.rows--; /* message line */
editor.curx = editor.cury = 0;
editor.rx = 0;
@ -630,6 +707,9 @@ init_editor()
editor.nrows = 0;
editor.rowoffs = editor.coloffs = 0;
editor.row = NULL;
editor.msg[0] = '\0';
editor.msgtm = 0;
}
@ -643,6 +723,8 @@ main(int argc, char *argv[])
open_file(argv[1]);
}
editor_set_status("C-k q to exit / C-k d to dump core");
display_clear(NULL);
loop();

1
ke/test.txt Normal file
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@ -0,0 +1 @@
hello world s ome tex t for you