Skip to content

feat: add support for Ctrl+Left/Right word navigation #241

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
bleeqer wants to merge 1 commit into
base: master
Choose a base branch
from
Open

feat: add support for Ctrl+Left/Right word navigation #241

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
54 changes: 52 additions & 2 deletions linenoise.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -764,6 +764,44 @@ void linenoiseEditMoveRight(struct linenoiseState *l) {
}
}

/* Move cursor one word to the left. */
void linenoiseEditMoveWordLeft(struct linenoiseState *l) {
if (l->pos == 0) return;

size_t pos = l->pos;

while (pos > 0 && isspace((unsigned char)l->buf[pos-1])) {
pos--;
}

while (pos > 0 && !isspace((unsigned char)l->buf[pos-1])) {
pos--;
}

l->pos = pos;
refreshLine(l);
}

/* Move cursor one word to the right. */
void linenoiseEditMoveWordRight(struct linenoiseState *l) {
if (l->pos >= l->len) return;

size_t pos = l->pos;

/* Step 1: skip non-space characters (current word) */
while (pos < l->len && !isspace((unsigned char)l->buf[pos])) {
pos++;
}

/* Step 2: skip spaces */
while (pos < l->len && isspace((unsigned char)l->buf[pos])) {
pos++;
}

l->pos = pos;
refreshLine(l);
}

/* Move cursor to the start of the line. */
void linenoiseEditMoveHome(struct linenoiseState *l) {
if (l->pos != 0) {
Expand Down Expand Up @@ -932,7 +970,7 @@ char *linenoiseEditFeed(struct linenoiseState *l) {

char c;
int nread;
char seq[3];
char seq[5];

nread = read(l->ifd,&c,1);
if (nread <= 0) return NULL;
Expand Down Expand Up @@ -1013,13 +1051,25 @@ char *linenoiseEditFeed(struct linenoiseState *l) {
if (seq[1] >= '0' && seq[1] <= '9') {
/* Extended escape, read additional byte. */
if (read(l->ifd,seq+2,1) == -1) break;
if (read(l->ifd,seq+3,1) == -1) break;
if (read(l->ifd,seq+4,1) == -1) break;

if (seq[2] == '~') {
switch(seq[1]) {
case '3': /* Delete key. */
linenoiseEditDelete(l);
break;
}
}
} else {
switch (seq[4]) {
case 'C': /* Ctrl+Right */
linenoiseEditMoveWordRight(l);
break;
case 'D': /* Ctrl+Left */
linenoiseEditMoveWordLeft(l);
break;
}
}
} else {
switch(seq[1]) {
case 'A': /* Up */
Expand Down