tyrel/tted
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rename tte

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This commit is contained in:
Tyrel Souza 2021-10-21 00:03:25 -04:00
parent 0d16dc668e
commit 7271dc323d
3 changed files with 27 additions and 13 deletions
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2
CMakeLists.txt
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@ -3,4 +3,4 @@ project(editor)
set(CMAKE_CXX_STANDARD 17) set(CMAKE_CXX_STANDARD 17)
add_executable(editor kilo.c) add_executable(editor tte.c)

1
README.md Normal file
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@ -0,0 +1 @@
Tyrel's Text Editor

37
kilo.c → tte.c
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@ -1,4 +1,8 @@
/** Includes */ /** Includes */
#define _DEFAULT_SOURCE
#define _BSD_SOURCE
#define _GNU_SOURCE
#include <ctype.h> #include <ctype.h>
#include <errno.h> #include <errno.h>
#include <stdio.h> #include <stdio.h>
@ -37,7 +41,7 @@ struct editorConfig {
int screenrows; int screenrows;
int screencols; int screencols;
int numrows; int numrows;
erow row; erow *row;
struct termios orig_termios; struct termios orig_termios;
}; };
struct editorConfig E; struct editorConfig E;
@ -161,6 +165,16 @@ int getWindowSize(int *rows, int *cols) {
return 0; return 0;
} }
} }
/** Row operations */
void editorAppendRow(char *s, size_t len) {
E.row = realloc(E.row, sizeof(erow) * (E.numrows+1));
int at = E.numrows;
E.row[at].size = len;
E.row[at].chars = malloc(len+1);
memcpy(E.row[at].chars, s, len);
E.row[at].chars[len] = '\0';
E.numrows++;
}
/** file i/o */ /** file i/o */
@ -169,23 +183,21 @@ void editorOpen(char *filename) {
if (!fp) die("fopen"); if (!fp) die("fopen");
char *line = NULL; char *line = NULL;
ssize_t linecap = 0; size_t linecap = 0;
ssize_t linelen; ssize_t linelen;
linelen = getline(&line, &linecap, fp); linelen = getline(&line, &linecap, fp);
if (linelen != -1) { while((linelen = getline(&line, &linecap, fp)) != -1) {
while (linelen > 0 && (line[linelen - 1] == '\r' || while (linelen > 0 && (line[linelen - 1] == '\n' ||
line[linelen - 1] == '\r')) line[linelen - 1] == '\r'))
linelen--; linelen--;
E.row.size = linelen; editorAppendRow(line, linelen);
E.row.chars = malloc(linelen + 1);
memcpy(E.row.chars, line, linelen);
E.row.chars[linelen] = '\0';
E.numrows = 1;
} }
free(line); free(line);
fclose(fp); fclose(fp);
} }
/** append buffer */ /** append buffer */
struct abuf { struct abuf {
char *b; char *b;
@ -212,7 +224,7 @@ void editorDrawRows(struct abuf *ab) {
int y; int y;
for (y = 0; y < E.screenrows; y++) { for (y = 0; y < E.screenrows; y++) {
if (y >= E.numrows) { // Draw rows after buffer if (y >= E.numrows) { // Draw rows after buffer
if (y == E.screenrows / 3) { if (E.numrows == 0 && y == E.screenrows / 3) {
char welcome[80]; char welcome[80];
int welcomelen = snprintf(welcome, sizeof welcome, "Tyrel Editor -- version %s", TYREL_VERSION); int welcomelen = snprintf(welcome, sizeof welcome, "Tyrel Editor -- version %s", TYREL_VERSION);
int padding = (E.screencols - welcomelen) / 2; int padding = (E.screencols - welcomelen) / 2;
@ -227,9 +239,9 @@ void editorDrawRows(struct abuf *ab) {
abAppend(ab, "~", 1); abAppend(ab, "~", 1);
} }
} else { // draw buffer } else { // draw buffer
int len = E.row.size; int len = E.row[y].size;
if (len > E.screencols) len = E.screencols; // truncate if further than columns if (len > E.screencols) len = E.screencols; // truncate if further than columns
abAppend(ab, E.row.chars, len); abAppend(ab, E.row[y].chars, len);
} }
abAppend(ab, "\x1b[K", 3); abAppend(ab, "\x1b[K", 3);
@ -319,6 +331,7 @@ void initEditor() {
E.cx = 0; E.cx = 0;
E.cy = 0; E.cy = 0;
E.numrows = 0; E.numrows = 0;
E.row = NULL;
if (getWindowSize(&E.screenrows, &E.screencols) == -1) die("getWindowSize"); if (getWindowSize(&E.screenrows, &E.screencols) == -1) die("getWindowSize");
} }