splitting things out

This commit is contained in:
Kyle Isom 2020-02-11 09:52:49 -08:00
parent 464de25980
commit fd45ff4019
4 changed files with 94 additions and 78 deletions

View File

@ -1,17 +1,17 @@
BIN := ke
OBJS := main.o
OBJS := main.o abuf.o
LDFLAGS :=
CFLAGS := -pedantic -Wall -Werror -Wextra -O0 -std=c99 -g
CFLAGS := -pedantic -Wall -Werror -Wextra -O0 -std=c99 -g
.PHONY: all
all: build
all: build
.PHONY: build
build: $(BIN)
$(BIN): main.c
$(CC) $(CFLAGS) $(LDFLAGS) -o $@ main.c
$(BIN): $(OBJS)
$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJS)
.PHONY: clean
clean:
@ -30,4 +30,3 @@ install: $(BIN)
cp $(BIN) $(HOME)/bin/
%.o: %.c

27
ke/abuf.c Normal file
View File

@ -0,0 +1,27 @@
#include <stdlib.h>
#include <string.h>
#include "abuf.h"
void
ab_append(struct abuf *buf, const char *s, int len)
{
char *nc = realloc(buf->b, buf->len + len);
if (nc == NULL) {
abort();
}
memcpy(&nc[buf->len], s, len);
buf->b = nc;
buf->len += len; /* DANGER: overflow */
}
void
ab_free(struct abuf *buf)
{
free(buf->b);
buf->b = NULL;
}

17
ke/abuf.h Normal file
View File

@ -0,0 +1,17 @@
#ifndef KE_ABUF_H
#define KE_ABUF_H
struct abuf {
char *b;
int len;
};
#define ABUF_INIT {NULL, 0}
void ab_append(struct abuf *buf, const char *s, int len);
void ab_free(struct abuf *buf);
#endif /* KE_ABUF_H */

117
ke/main.c
View File

@ -5,6 +5,7 @@
* https://viewsourcecode.org/snaptoken/kilo/
*/
#include <sys/ioctl.h>
#include <assert.h>
#include <ctype.h>
#include <errno.h>
@ -17,6 +18,8 @@
#include <time.h>
#include <unistd.h>
#include "abuf.h"
#define KE_VERSION "0.0.1-pre"
#define ESCSEQ "\x1b["
@ -82,36 +85,6 @@ struct {
} editor;
/* append buffer */
struct abuf {
char *b;
int len;
};
#define ABUF_INIT {NULL, 0}
void
ab_append(struct abuf *buf, const char *s, int len)
{
char *nc = realloc(buf->b, buf->len + len);
if (nc == NULL) {
abort();
}
memcpy(&nc[buf->len], s, len);
buf->b = nc;
buf->len += len; /* DANGER: overflow */
}
void
ab_free(struct abuf *buf)
{
free(buf->b);
buf->b = NULL;
}
void
die(const char *s)
@ -122,7 +95,7 @@ die(const char *s)
*/
write(STDOUT_FILENO, "\x1b[2J", 4);
write(STDOUT_FILENO, "\x1b[H", 3);
perror(s);
exit(1);
}
@ -174,18 +147,18 @@ row_cursor_to_render(erow *row, int rx)
{
int cur_rx = 0;
int curx = 0;
for (curx = 0; curx < row->size; curx++) {
if (row->line[curx] == '\t') {
cur_rx += (TAB_STOP - 1) - (cur_rx % TAB_STOP);
cur_rx += (TAB_STOP - 1) - (cur_rx % TAB_STOP);
}
cur_rx++;
if (cur_rx > rx) {
break;
}
}
return curx;
}
@ -234,12 +207,12 @@ insert_row(int at, char *s, size_t len)
editor.row = realloc(editor.row, sizeof(erow) * (editor.nrows + 1));
assert(editor.row != NULL);
if (at < editor.nrows) {
memmove(&editor.row[at+1], &editor.row[at],
sizeof(erow) * (editor.nrows - at + 1));
}
editor.row[at].size = len;
editor.row[at].line = malloc(len+1);
memcpy(editor.row[at].line, s, len);
@ -267,9 +240,9 @@ void
delete_row(int at)
{
if (at < 0 || at >= editor.nrows) {
return;
return;
}
free_row(&editor.row[at]);
memmove(&editor.row[at], &editor.row[at+1],
sizeof(erow) * (editor.nrows - at - 1));
@ -350,13 +323,13 @@ deletech()
if (editor.cury == editor.nrows) {
return;
}
if (editor.cury == 0 && editor.curx == 0) {
return;
}
row = &editor.row[editor.cury];
if (editor.curx > 0) {
row_delete_ch(row, editor.curx - 1);
editor.curx--;
@ -381,7 +354,7 @@ open_file(const char *filename)
free(editor.filename);
editor.filename = strdup(filename);
assert(editor.filename != NULL);
editor.dirty = 0;
if ((fp = fopen(filename, "r")) == NULL) {
if (errno == ENOENT) {
@ -422,7 +395,7 @@ rows_to_buffer(int *buflen)
/* extra byte for newline */
len += editor.row[j].size+1;
}
if (len == 0) {
return NULL;
}
@ -466,7 +439,7 @@ save_file()
if (-1 == ftruncate(fd, len)) {
goto save_exit;
}
if (len == 0) {
status = 0;
goto save_exit;
@ -488,10 +461,10 @@ save_exit:
buf);
} else {
editor_set_status("Wrote %d bytes to %s.", len,
editor.filename);
editor.filename);
editor.dirty = 0;
}
return status;
}
@ -585,21 +558,21 @@ editor_prompt(char *prompt, void (*cb)(char *, int16_t))
char *buf = malloc(bufsz);
size_t buflen = 0;
int16_t c;
buf[0] = '\0';
while (1) {
editor_set_status(prompt, buf);
display_refresh();
while ((c = get_keypress()) <= 0) ;
if (c == DEL_KEY || c == CTRL_KEY('h') || c == BACKSPACE) {
if (buflen != 0) {
buf[--buflen] = '\0';
buf[--buflen] = '\0';
}
} else if (c == ESC_KEY) {
editor_set_status("");
if (cb) {
cb(buf, c);
cb(buf, c);
}
free(buf);
return NULL;
@ -617,11 +590,11 @@ editor_prompt(char *prompt, void (*cb)(char *, int16_t))
buf = realloc(buf, bufsz);
assert(buf != NULL);
}
buf[buflen++] = c;
buf[buflen] = '\0';
}
if (cb) {
cb(buf, c);
}
@ -644,27 +617,27 @@ editor_find_callback(char *query, int16_t c)
dir = 1;
return;
} else if (c == ARROW_RIGHT || c == ARROW_DOWN) {
dir = 1;
dir = 1;
} else if (c == ARROW_LEFT || c == ARROW_UP) {
dir = -1;
} else {
lmatch = -1;
dir = 1;
}
if (lmatch == -1) {
dir = 1;
}
current = lmatch;
for (i = 0; i < editor.nrows; i++) {
current += dir;
if (current == -1) {
current = editor.nrows - 1;
current = editor.nrows - 1;
} else if (current == editor.nrows) {
current = 0;
current = 0;
}
row = &editor.row[current];
match = strstr(row->render, query);
if (match) {
@ -672,7 +645,7 @@ editor_find_callback(char *query, int16_t c)
editor.cury = current;
editor.curx = row_render_to_cursor(row,
match - row->render);
/*
/*
* after this, scroll will put the match line at
* the top of the screen.
*/
@ -680,8 +653,8 @@ editor_find_callback(char *query, int16_t c)
break;
}
}
display_refresh();
display_refresh();
}
@ -693,7 +666,7 @@ editor_find()
int scy = editor.cury;
int sco = editor.coloffs;
int sro = editor.rowoffs;
query = editor_prompt("Search (ESC to cancel): %s",
editor_find_callback);
if (query) {
@ -704,7 +677,7 @@ editor_find()
editor.coloffs = sco;
editor.rowoffs = sro;
}
display_refresh();
}
@ -792,7 +765,7 @@ newline()
erow *row = NULL;
if (editor.curx == 0) {
insert_row(editor.cury, "", 0);
insert_row(editor.cury, "", 0);
} else {
row = &editor.row[editor.cury];
insert_row(editor.cury + 1, &row->line[editor.curx],
@ -802,7 +775,7 @@ newline()
row->line[row->size] = '\0';
update_row(row);
}
editor.cury++;
editor.curx = 0;
}
@ -844,7 +817,7 @@ process_kcommand(int16_t c)
break;
}
editor.dirtyex = 1;
editor.dirtyex = 1;
return;
}
@ -869,7 +842,7 @@ process_normal(int16_t c)
if (c == DEL_KEY) {
move_cursor(ARROW_RIGHT);
}
deletech();
break;
case CTRL_KEY('l'):
@ -884,7 +857,7 @@ process_normal(int16_t c)
}
break;
}
editor.dirtyex = 1;
}
@ -995,7 +968,7 @@ void
draw_rows(struct abuf *ab)
{
assert(editor.cols >= 0);
char buf[editor.cols];
int buflen, filerow, padding;
int y;
@ -1123,7 +1096,7 @@ display_refresh()
draw_rows(&ab);
draw_status_bar(&ab);
draw_message_line(&ab);
snprintf(buf, sizeof(buf), ESCSEQ "%d;%dH",
(editor.cury-editor.rowoffs)+1,
(editor.rx-editor.coloffs)+1);
@ -1169,7 +1142,7 @@ init_editor()
{
editor.cols = 0;
editor.rows = 0;
if (get_winsz(&editor.rows, &editor.cols) == -1) {
die("can't get window size");
}
@ -1185,7 +1158,7 @@ init_editor()
editor.msg[0] = '\0';
editor.msgtm = 0;
editor.dirty = 0;
}