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Merge branch 'strip-control-characters-from-pasted-text'

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Closes #306
This commit is contained in:
Daniel Eklöf 2021-01-26 19:31:31 +01:00
commit a6456911e7
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2 changed files with 43 additions and 4 deletions
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2
CHANGELOG.md
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@ -61,6 +61,8 @@
* Extending a word/line-wise selection now uses the original selection
mode instead of switching to character-wise.
* The scrollback search box no longer accepts non-printable characters.
* Non-formatting C0 control characters, `BS`, `HT` and `DEL` are now
stripped from pasted text.
### Deprecated

45
selection.c
View file

@ -1559,7 +1559,7 @@ fdm_receive_decoder_uri(struct clipboard_receive *ctx, char *data, size_t size)
char *start = ctx->buf.data;
char *end = NULL;
while ((end = memchr(start, '\n', ctx->buf.idx - (start - ctx->buf.data))) != NULL) {
while ((end = memchr(start, '\r', ctx->buf.idx - (start - ctx->buf.data))) != NULL) {
decode_one_uri(ctx, start, end - start);
start = end + 1;
}
@ -1608,12 +1608,49 @@ fdm_receive(struct fdm *fdm, int fd, int events, void *data)
if (count == 0)
break;
/* Call cb while at same time replacing \r\n with \n */
/*
* Call cb while at same time replace:
* - \r\n -> \r
* - \n -> \r
* - C0 -> <nothing> (strip non-formatting C0 characters)
* - \e -> <nothing> (i.e. strip ESC)
*/
char *p = text;
size_t left = count;
again:
for (size_t i = 0; i < left - 1; i++) {
if (p[i] == '\r' && p[i + 1] == '\n') {
for (size_t i = 0; i < left; i++) {
switch (p[i]) {
default:
break;
case '\n':
p[i] = '\r';
break;
case '\r':
/* Convert \r\n -> \r */
if (i + 1 < left && p[i + 1] == '\n') {
ctx->decoder(ctx, p, i + 1);
xassert(i + 2 <= left);
p += i + 2;
left -= i + 2;
goto again;
}
break;
/* C0 non-formatting control characters (\b \t \n \r excluded) */
case '\x01': case '\x02': case '\x03': case '\x04': case '\x05':
case '\x06': case '\x07': case '\x0b': case '\x0c': case '\x0e':
case '\x0f': case '\x10': case '\x11': case '\x12': case '\x13':
case '\x14': case '\x15': case '\x16': case '\x17': case '\x18':
case '\x19': case '\x1a': case '\x1b': case '\x1c': case '\x1d':
case '\x1e': case '\x1f':
/* FALLTHROUGH */
/* Additional control characters stripped by default (but
* configurable) in XTerm: BS, HT, DEL */
case '\b': case '\t': case '\x7f':
ctx->decoder(ctx, p, i);
xassert(i + 1 <= left);