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Lite
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This commit is contained in:
Saumya Bhatnagar 2018-05-28 23:34:55 +05:30
parent 0c61d55019
commit ef04c3795c
2 changed files with 19 additions and 9 deletions
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editor
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28
editor.c
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@ -44,7 +44,7 @@ struct editorConfig {
int screencols;
int cursorX;
int cursorY;
editorrow erow;
editorrow* erow;
int numrows;
} E;
@ -188,6 +188,18 @@ int getWindowSize(int * row, int * col) {
return 0;
}
/*** row operations ***/
void editorAppendRow(char *s, size_t len) {
E.erow = realloc(E.erow, sizeof(editorrow) * (E.numrows + 1));
int pos = E.numrows;
E.erow[pos].length = len; // excluding '\0' at the end of string
E.erow[pos].text = malloc(len + 1);
memcpy(E.erow[pos].text, s, len+1);
E.numrows++;
}
/*** file I/O ***/
void editorOpen(char * file) {
@ -199,16 +211,13 @@ void editorOpen(char * file) {
char *line = NULL;
size_t linecap = 0;
ssize_t linelen;
linelen = getline(&line, &linecap, fp);
if (linelen != -1) {
while ((linelen = getline(&line, &linecap, fp)) != -1) {
while (linelen > 0 && (line[linelen-1] == '\n' || line[linelen - 1] == '\r')) {
linelen--;
}
E.erow.length = linelen; // excluding '\0' at the end of string
E.erow.text = malloc(linelen + 1);
memcpy(E.erow.text, line, linelen+1);
E.numrows = 1;
editorAppendRow(line, linelen);
}
free(line);
@ -240,11 +249,11 @@ void editorDrawRows(struct AppendBuffer* ab) {
abAppend(ab, "~", 1);
}
} else {
int len = E.erow.length;
int len = E.erow[i].length;
if (len > E.screencols) {
len = E.screencols;
}
abAppend(ab, E.erow.text, len);
abAppend(ab, E.erow[i].text, len);
}
abAppend(ab, "\x1b[K", 3); // clear rest of current line
@ -337,6 +346,7 @@ void initEditor() {
E.cursorX = 0;
E.cursorY = 0;
E.numrows = 0;
E.erow = NULL;
if (getWindowSize(&E.screenrows, &E.screencols) == -1) {
die("getWindowSize");