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Use evbuffer for building S, W, L lists, also add an xmemdup helper

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instead of misusing asprintf.
This commit is contained in:
nicm
2026-06-18 10:56:22 +00:00
parent d92a479d2f
commit 0a6c846091
3 changed files with 64 additions and 35 deletions
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86
format.c
View File

@@ -559,7 +559,7 @@ format_cb_session_attached_list(struct format_tree *ft)
}
if ((size = EVBUFFER_LENGTH(buffer)) != 0)
xasprintf(&value, "%.*s", size, EVBUFFER_DATA(buffer));
value = xmemdup(EVBUFFER_DATA(buffer), size);
evbuffer_free(buffer);
return (value);
}
@@ -698,7 +698,7 @@ format_cb_window_linked_sessions_list(struct format_tree *ft)
}
if ((size = EVBUFFER_LENGTH(buffer)) != 0)
xasprintf(&value, "%.*s", size, EVBUFFER_DATA(buffer));
value = xmemdup(EVBUFFER_DATA(buffer), size);
evbuffer_free(buffer);
return (value);
}
@@ -752,7 +752,7 @@ format_cb_window_active_sessions_list(struct format_tree *ft)
}
if ((size = EVBUFFER_LENGTH(buffer)) != 0)
xasprintf(&value, "%.*s", size, EVBUFFER_DATA(buffer));
value = xmemdup(EVBUFFER_DATA(buffer), size);
evbuffer_free(buffer);
return (value);
}
@@ -816,7 +816,7 @@ format_cb_window_active_clients_list(struct format_tree *ft)
}
if ((size = EVBUFFER_LENGTH(buffer)) != 0)
xasprintf(&value, "%.*s", size, EVBUFFER_DATA(buffer));
value = xmemdup(EVBUFFER_DATA(buffer), size);
evbuffer_free(buffer);
return (value);
}
@@ -991,7 +991,7 @@ format_cb_pane_tabs(struct format_tree *ft)
evbuffer_add_printf(buffer, "%u", i);
}
if ((size = EVBUFFER_LENGTH(buffer)) != 0)
xasprintf(&value, "%.*s", size, EVBUFFER_DATA(buffer));
value = xmemdup(EVBUFFER_DATA(buffer), size);
evbuffer_free(buffer);
return (value);
}
@@ -1075,7 +1075,7 @@ format_cb_session_group_list(struct format_tree *ft)
}
if ((size = EVBUFFER_LENGTH(buffer)) != 0)
xasprintf(&value, "%.*s", size, EVBUFFER_DATA(buffer));
value = xmemdup(EVBUFFER_DATA(buffer), size);
evbuffer_free(buffer);
return (value);
}
@@ -1115,7 +1115,7 @@ format_cb_session_group_attached_list(struct format_tree *ft)
}
if ((size = EVBUFFER_LENGTH(buffer)) != 0)
xasprintf(&value, "%.*s", size, EVBUFFER_DATA(buffer));
value = xmemdup(EVBUFFER_DATA(buffer), size);
evbuffer_free(buffer);
return (value);
}
@@ -4653,7 +4653,8 @@ format_loop_sessions(struct format_expand_state *es, const char *fmt)
struct format_tree *nft;
struct format_expand_state next;
char *all, *active, *use, *expanded, *value;
size_t valuelen;
struct evbuffer *buffer;
size_t size;
struct session *s, **l;
int i, n, last = 0;
@@ -4662,8 +4663,9 @@ format_loop_sessions(struct format_expand_state *es, const char *fmt)
active = NULL;
}
value = xcalloc(1, 1);
valuelen = 1;
buffer = evbuffer_new();
if (buffer == NULL)
fatalx("out of memory");
l = sort_get_sessions(&n, sc);
for (i = 0; i < n; i++) {
@@ -4684,16 +4686,18 @@ format_loop_sessions(struct format_expand_state *es, const char *fmt)
expanded = format_expand1(&next, use);
format_free(next.ft);
valuelen += strlen(expanded);
value = xrealloc(value, valuelen);
strlcat(value, expanded, valuelen);
evbuffer_add(buffer, expanded, strlen(expanded));
free(expanded);
}
free(active);
free(all);
if ((size = EVBUFFER_LENGTH(buffer)) != 0)
value = xmemdup(EVBUFFER_DATA(buffer), size);
else
value = xstrdup("");
evbuffer_free(buffer);
return (value);
}
@@ -4763,7 +4767,8 @@ format_loop_windows(struct format_expand_state *es, const char *fmt)
struct format_tree *nft;
struct format_expand_state next;
char *all, *active, *use, *expanded, *value;
size_t valuelen;
struct evbuffer *buffer;
size_t size;
struct winlink *wl, **l;
struct window *w;
int i, n, last = 0;
@@ -4778,8 +4783,9 @@ format_loop_windows(struct format_expand_state *es, const char *fmt)
active = NULL;
}
value = xcalloc(1, 1);
valuelen = 1;
buffer = evbuffer_new();
if (buffer == NULL)
fatalx("out of memory");
l = sort_get_winlinks_session(ft->s, &n, sc);
for (i = 0; i < n; i++) {
@@ -4811,16 +4817,18 @@ format_loop_windows(struct format_expand_state *es, const char *fmt)
expanded = format_expand1(&next, use);
format_free(nft);
valuelen += strlen(expanded);
value = xrealloc(value, valuelen);
strlcat(value, expanded, valuelen);
evbuffer_add(buffer, expanded, strlen(expanded));
free(expanded);
}
free(active);
free(all);
if ((size = EVBUFFER_LENGTH(buffer)) != 0)
value = xmemdup(EVBUFFER_DATA(buffer), size);
else
value = xstrdup("");
evbuffer_free(buffer);
return (value);
}
@@ -4835,7 +4843,8 @@ format_loop_panes(struct format_expand_state *es, const char *fmt)
struct format_tree *nft;
struct format_expand_state next;
char *all, *active, *use, *expanded, *value;
size_t valuelen;
struct evbuffer *buffer;
size_t size;
struct window_pane *wp, **l;
int i, n, last = 0;
@@ -4849,8 +4858,9 @@ format_loop_panes(struct format_expand_state *es, const char *fmt)
active = NULL;
}
value = xcalloc(1, 1);
valuelen = 1;
buffer = evbuffer_new();
if (buffer == NULL)
fatalx("out of memory");
l = sort_get_panes_window(ft->w, &n, sc);
for (i = 0; i < n; i++) {
@@ -4870,16 +4880,18 @@ format_loop_panes(struct format_expand_state *es, const char *fmt)
expanded = format_expand1(&next, use);
format_free(nft);
valuelen += strlen(expanded);
value = xrealloc(value, valuelen);
strlcat(value, expanded, valuelen);
evbuffer_add(buffer, expanded, strlen(expanded));
free(expanded);
}
free(active);
free(all);
if ((size = EVBUFFER_LENGTH(buffer)) != 0)
value = xmemdup(EVBUFFER_DATA(buffer), size);
else
value = xstrdup("");
evbuffer_free(buffer);
return (value);
}
@@ -4894,11 +4906,13 @@ format_loop_clients(struct format_expand_state *es, const char *fmt)
struct format_tree *nft;
struct format_expand_state next;
char *expanded, *value;
size_t valuelen;
struct evbuffer *buffer;
size_t size;
int i, n, last = 0;
value = xcalloc(1, 1);
valuelen = 1;
buffer = evbuffer_new();
if (buffer == NULL)
fatalx("out of memory");
l = sort_get_clients(&n, sc);
for (i = 0; i < n; i++) {
@@ -4913,13 +4927,15 @@ format_loop_clients(struct format_expand_state *es, const char *fmt)
expanded = format_expand1(&next, fmt);
format_free(nft);
valuelen += strlen(expanded);
value = xrealloc(value, valuelen);
strlcat(value, expanded, valuelen);
evbuffer_add(buffer, expanded, strlen(expanded));
free(expanded);
}
if ((size = EVBUFFER_LENGTH(buffer)) != 0)
value = xmemdup(EVBUFFER_DATA(buffer), size);
else
value = xstrdup("");
evbuffer_free(buffer);
return (value);
}

12
xmalloc.c
View File

@@ -105,6 +105,18 @@ xstrndup(const char *str, size_t maxlen)
return cp;
}
char *
xmemdup(const void *ptr, size_t len)
{
char *cp;
cp = xmalloc(len + 1);
if (len != 0)
memcpy(cp, ptr, len);
cp[len] = '\0';
return cp;
}
int
xasprintf(char **ret, const char *fmt, ...)
{

1
xmalloc.h
View File

@@ -26,6 +26,7 @@ void *xreallocarray(void *, size_t, size_t);
void *xrecallocarray(void *, size_t, size_t, size_t);
char *xstrdup(const char *);
char *xstrndup(const char *, size_t);
char *xmemdup(const void *, size_t);
int xasprintf(char **, const char *, ...)
__attribute__((__format__ (printf, 2, 3)))
__attribute__((__nonnull__ (2)));