Actually I think this function is wrong because it reads over the end of
src. len is the length of src, not dst. We know there is always enough
space in dst.
I haven't time now to look at this closely or test it but maybe
something like:
diff --git a/utf8.c b/utf8.c
index 63723d7..b1f44bf 100644
--- a/utf8.c
+++ b/utf8.c
@@ -352,3 +352,51 @@ utf8_width(const struct utf8_data *utf8data)
}
return (1);
}
+
+/*
+ * Encode len characters from src into dst, which is guaranteed to have four
+ * bytes available for each character from src (for \abc or UTF-8) plus space
+ * for \0.
+ */
+int
+utf8_strvis(char *dst, const char *src, size_t len, int flag)
+{
+ struct utf8_data utf8data;
+ const char *start, *end;
+ int more;
+ size_t i;
+
+ if (len == 0) {
+ *dst = '\0';
+ return (0);
+ }
+
+ start = dst;
+ end = src + len;
+
+ while (src < end) {
+ if (utf8_open(&utf8data, *src)) {
+ more = 1;
+ while (++src < end && more)
+ more = utf8_append(&utf8data, *src);
+ if (!more) {
+ /* UTF-8 character finished. */
+ for (i = 0; i < utf8data.size; i++)
+ *dst++ = utf8data.data[i];
+ continue;
+ } else if (utf8data.have > 0) {
+ /* Not a complete UTF-8 character. */
+ src -= (utf8data.have - 1);
+ }
+ }
+ if (src < end - 1)
+ dst = vis(dst, src[0], flag, src[1]);
+ else if (src < end)
+ dst = vis(dst, src[0], flag, '\0');
+ src++;
+
+ }
+
+ *dst = '\0';
+ return (dst - start);
+}
On Sun, Mar 09, 2014 at 10:30:39AM +0900, Kosuke ASAMI wrote:
> I have tested, and it works fine!
>
> However, there is a mistake in my first patch.
> The flag needs to be cleared before next iteration. (like following diff)
>
> I have attached the complete patch.
>
> ----------
>
> diff --git a/utf8.c b/utf8.c
> index 10200dd..0465a32 100644
> --- a/utf8.c
> +++ b/utf8.c
> @@ -379,6 +379,7 @@ utf8_strvis(char *dst, const char *src, size_t
> len, int flag)
> src++;
> for (i = 0; i < utf8data.size; i++)
> *dst++ = utf8data.data[i];
> + more = -1;
> continue;
> } else if (utf8data.have > 0) {
> /* Not a complete UTF-8 character. */
>
> 2014-03-09 1:51 GMT+09:00 Nicholas Marriott <[email protected]>:
> > Hi
> >
> > Here's it with a little tidying up. I didn't test this but can you take
> > a look?
> >
> >
> > diff --git a/cmd-choose-buffer.c b/cmd-choose-buffer.c
> > index d79f6fd..a46db3e 100644
> > --- a/cmd-choose-buffer.c
> > +++ b/cmd-choose-buffer.c
> > @@ -45,6 +45,7 @@ cmd_choose_buffer_exec(struct cmd *self, struct cmd_q
> > *cmdq)
> > struct client *c;
> > struct window_choose_data *cdata;
> > struct winlink *wl;
> > + struct window_pane *wp;
> > struct paste_buffer *pb;
> > char *action, *action_data;
> > const char *template;
> > @@ -61,6 +62,9 @@ cmd_choose_buffer_exec(struct cmd *self, struct cmd_q
> > *cmdq)
> > if ((wl = cmd_find_window(cmdq, args_get(args, 't'), NULL)) == NULL)
> > return (CMD_RETURN_ERROR);
> >
> > + if (cmd_find_pane(cmdq, args_get(args, 't'), NULL, &wp) == NULL)
> > + return (CMD_RETURN_ERROR);
> > +
> > if (paste_get_top(&global_buffers) == NULL)
> > return (CMD_RETURN_NORMAL);
> >
> > @@ -79,7 +83,7 @@ cmd_choose_buffer_exec(struct cmd *self, struct cmd_q
> > *cmdq)
> >
> > cdata->ft_template = xstrdup(template);
> > format_add(cdata->ft, "line", "%u", idx - 1);
> > - format_paste_buffer(cdata->ft, pb);
> > + format_paste_buffer(cdata->ft, wp, pb);
> >
> > xasprintf(&action_data, "%u", idx - 1);
> > cdata->command = cmd_template_replace(action, action_data,
> > 1);
> > diff --git a/cmd-list-buffers.c b/cmd-list-buffers.c
> > index 02a4183..6a9fb5e 100644
> > --- a/cmd-list-buffers.c
> > +++ b/cmd-list-buffers.c
> > @@ -42,12 +42,16 @@ enum cmd_retval
> > cmd_list_buffers_exec(unused struct cmd *self, struct cmd_q *cmdq)
> > {
> > struct args *args = self->args;
> > + struct window_pane *wp;
> > struct paste_buffer *pb;
> > struct format_tree *ft;
> > u_int idx;
> > char *line;
> > const char *template;
> >
> > + if (cmd_find_pane(cmdq, args_get(args, 't'), NULL, &wp) == NULL)
> > + return (CMD_RETURN_ERROR);
> > +
> > if ((template = args_get(args, 'F')) == NULL)
> > template = LIST_BUFFERS_TEMPLATE;
> >
> > @@ -55,7 +59,7 @@ cmd_list_buffers_exec(unused struct cmd *self, struct
> > cmd_q *cmdq)
> > while ((pb = paste_walk_stack(&global_buffers, &idx)) != NULL) {
> > ft = format_create();
> > format_add(ft, "line", "%u", idx - 1);
> > - format_paste_buffer(ft, pb);
> > + format_paste_buffer(ft, wp, pb);
> >
> > line = format_expand(ft, template);
> > cmdq_print(cmdq, "%s", line);
> > diff --git a/format.c b/format.c
> > index 497b5b5..05cd4ed 100644
> > --- a/format.c
> > +++ b/format.c
> > @@ -603,9 +603,10 @@ format_window_pane(struct format_tree *ft, struct
> > window_pane *wp)
> >
> > /* Set default format keys for paste buffer. */
> > void
> > -format_paste_buffer(struct format_tree *ft, struct paste_buffer *pb)
> > +format_paste_buffer(struct format_tree *ft, struct window_pane *wp,
> > + struct paste_buffer *pb)
> > {
> > - char *pb_print = paste_print(pb, 50);
> > + char *pb_print = paste_print(pb, wp, 50);
> >
> > format_add(ft, "buffer_size", "%zu", pb->size);
> > format_add(ft, "buffer_sample", "%s", pb_print);
> > diff --git a/paste.c b/paste.c
> > index 28f1230..6101195 100644
> > --- a/paste.c
> > +++ b/paste.c
> > @@ -149,23 +149,26 @@ paste_replace(struct paste_stack *ps, u_int idx, char
> > *data, size_t size)
> >
> > /* Convert a buffer into a visible string. */
> > char *
> > -paste_print(struct paste_buffer *pb, size_t width)
> > +paste_print(struct paste_buffer *pb, struct window_pane *wp, size_t width)
> > {
> > - char *buf;
> > - size_t len, used;
> > + char *buf;
> > + size_t len, used;
> > + const int flags = VIS_OCTAL|VIS_TAB|VIS_NL;
> >
> > if (width < 3)
> > width = 3;
> > - buf = xmalloc(width * 4 + 1);
> > + buf = xmalloc(width * 4 + 4); /* four bytes each plus "...\0" */
> >
> > len = pb->size;
> > if (len > width)
> > len = width;
> >
> > - used = strvisx(buf, pb->data, len, VIS_OCTAL|VIS_TAB|VIS_NL);
> > + if (options_get_number(&wp->window->options, "utf8"))
> > + used = utf8_strvis(buf, pb->data, len, flags);
> > + else
> > + used = strvisx(buf, pb->data, len, flags);
> > if (pb->size > width || used > width)
> > - strlcpy(buf + width - 3, "...", 4);
> > -
> > + strlcpy(buf + width, "...", 4);
> > return (buf);
> > }
> >
> > diff --git a/tmux.h b/tmux.h
> > index 5aac390..195c955 100644
> > --- a/tmux.h
> > +++ b/tmux.h
> > @@ -1540,7 +1540,7 @@ void format_winlink(struct format_tree
> > *, struct session *,
> > struct winlink *);
> > void format_window_pane(struct format_tree *,
> > struct window_pane *);
> > -void format_paste_buffer(struct format_tree *,
> > +void format_paste_buffer(struct format_tree *, struct
> > window_pane *,
> > struct paste_buffer *);
> >
> > /* mode-key.c */
> > @@ -1711,7 +1711,8 @@ int paste_free_top(struct paste_stack
> > *);
> > int paste_free_index(struct paste_stack *, u_int);
> > void paste_add(struct paste_stack *, char *, size_t, u_int);
> > int paste_replace(struct paste_stack *, u_int, char *, size_t);
> > -char *paste_print(struct paste_buffer *, size_t);
> > +char *paste_print(struct paste_buffer *, struct window_pane *,
> > + size_t);
> > void paste_send_pane(struct paste_buffer *, struct window_pane
> > *,
> > const char *, int);
> >
> > @@ -2323,6 +2324,7 @@ int utf8_open(struct utf8_data *, u_char);
> > int utf8_append(struct utf8_data *, u_char);
> > u_int utf8_combine(const struct utf8_data *);
> > u_int utf8_split2(u_int, u_char *);
> > +int utf8_strvis(char *, const char *, size_t, int);
> >
> > /* osdep-*.c */
> > char *osdep_get_name(int, char *);
> > diff --git a/utf8.c b/utf8.c
> > index 63723d7..10200dd 100644
> > --- a/utf8.c
> > +++ b/utf8.c
> > @@ -352,3 +352,42 @@ utf8_width(const struct utf8_data *utf8data)
> > }
> > return (1);
> > }
> > +
> > +/*
> > + * Encode len characters from src into dst, which is guaranteed to have
> > four
> > + * bytes available for each character from src (for \abc or UTF-8).
> > + */
> > +int
> > +utf8_strvis(char *dst, const char *src, size_t len, int flag)
> > +{
> > + struct utf8_data utf8data;
> > + char *start;
> > + int more;
> > + size_t i;
> > +
> > + for (start = dst; (dst - start) < len;) {
> > + if (utf8_open(&utf8data, *src)) {
> > + while ((dst - start) + utf8data.have < len) {
> > + src++;
> > +
> > + more = utf8_append(&utf8data, *src);
> > + if (!more)
> > + break;
> > + }
> > + if (!more) {
> > + /* UTF-8 character finished. */
> > + src++;
> > + for (i = 0; i < utf8data.size; i++)
> > + *dst++ = utf8data.data[i];
> > + continue;
> > + } else if (utf8data.have > 0) {
> > + /* Not a complete UTF-8 character. */
> > + src -= (utf8data.have - 1);
> > + }
> > + }
> > + dst = vis(dst, src[0], flag, src[1]);
> > + src++;
> > + }
> > + *dst = '\0';
> > + return (dst - start);
> > +}
> >
> >
> >
> > On Sat, Mar 08, 2014 at 09:06:02PM +0900, Kosuke ASAMI wrote:
> >> >*Arguments the wrong way round?
> >> Sorry, I have fixed it.
> >> I have moved the method from compat/vis.c to utf8.c and renamed it.
> >>
> >> 2014-03-08 18:25 GMT+09:00 Nicholas Marriott
> >> <[1][email protected]>:
> >>
> >> Hi
> >>
> >> vis.c is only built on some platforms so the new function would be
> >> better in utf8.c as something like utf8_strvis.
> >>
> >> Also this looks wrong:
> >>
> >> - * * * * * * * format_paste_buffer(ft, pb);
> >> + * * * * * * * format_paste_buffer(wp, ft, pb);
> >>
> >> Arguments the wrong way round?
> >>
> >> On Sat, Mar 08, 2014 at 06:15:25PM +0900, Kosuke ASAMI wrote:
> >> > * *I have implemented a better UTF-8 support for buffer_sample in
> >> > * *choose-buffer and list-buffers.
> >> >
> >> > * *When an user enables UTF-8 on window option, choose-buffer and
> >> > * *list-buffers show UTF-8 characters if so. Otherwise, they do as
> >> until now.
> >>
> >> >
> >>
> >> ------------------------------------------------------------------------------
> >> > Subversion Kills Productivity. Get off Subversion & Make the Move to
> >> Perforce.
> >> > With Perforce, you get hassle-free workflows. Merge that actually
> >> works.
> >> > Faster operations. Version large binaries. *Built-in WAN
> >> optimization
> >> and the
> >> > freedom to use Git, Perforce or both. Make the move to Perforce.
> >> >
> >>
> >> [2]http://pubads.g.doubleclick.net/gampad/clk?id=122218951&iu=/4140/ostg.clktrk
> >>
> >> > _______________________________________________
> >> > tmux-users mailing list
> >> > [3][email protected]
> >> > [4]https://lists.sourceforge.net/lists/listinfo/tmux-users
> >>
> >> References
> >>
> >> Visible links
> >> 1. mailto:[email protected]
> >> 2.
> >> http://pubads.g.doubleclick.net/gampad/clk?id=122218951&iu=/4140/ostg.clktrk
> >> 3. mailto:[email protected]
> >> 4. https://lists.sourceforge.net/lists/listinfo/tmux-users
> >
> >
------------------------------------------------------------------------------
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With Perforce, you get hassle-free workflows. Merge that actually works.
Faster operations. Version large binaries. Built-in WAN optimization and the
freedom to use Git, Perforce or both. Make the move to Perforce.
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