protected void
ct_conv_buff_resize(ct_buffer_t *conv, size_t mincsize, size_t minwsize)
{
void *p;
if (mincsize > conv->csize) {
conv->csize = mincsize;
p = el_realloc(conv->cbuff, conv->csize * sizeof(char));
if (p == NULL) {
conv->csize = 0;
el_free(conv->cbuff);
conv->cbuff = NULL;
} else
conv->cbuff = p;
}
if (minwsize > conv->wsize) {
conv->wsize = minwsize;
p = el_realloc(conv->wbuff, conv->wsize * sizeof(Char));
if (p == NULL) {
conv->wsize = 0;
el_free(conv->wbuff);
conv->wbuff = NULL;
} else
conv->wbuff = p;
}
}
/* hist_enlargebuf()
* Enlarge history buffer to specified value. Called from el_enlargebufs().
* Return 0 for failure, 1 for success.
*/
libedit_private int
/*ARGSUSED*/
hist_enlargebuf(EditLine *el, size_t oldsz, size_t newsz)
{
wchar_t *newbuf;
newbuf = el_realloc(el->el_history.buf, newsz * sizeof(*newbuf));
if (!newbuf)
return 0;
(void) memset(&newbuf[oldsz], '\0', (newsz - oldsz) * sizeof(*newbuf));
el->el_history.last = newbuf +
(el->el_history.last - el->el_history.buf);
el->el_history.buf = newbuf;
el->el_history.sz = newsz;
return 1;
}
static int
ct_conv_wbuff_resize(ct_buffer_t *conv, size_t wsize)
{
void *p;
if (wsize <= conv->wsize)
return 0;
conv->wsize = wsize;
p = el_realloc(conv->wbuff, conv->wsize * sizeof(*conv->wbuff));
if (p == NULL) {
conv->wsize = 0;
el_free(conv->wbuff);
conv->wbuff = NULL;
return -1;
}
conv->wbuff = p;
return 0;
}
/*
* return first found file name starting by the ``text'' or NULL if no
* such file can be found
* value of ``state'' is ignored
*
* it's caller's responsibility to free returned string
*/
char *
fn_filename_completion_function(const char *text, int state)
{
static DIR *dir = NULL;
static char *filename = NULL, *dirname = NULL, *dirpath = NULL;
static size_t filename_len = 0;
struct dirent *entry;
char *temp;
size_t len;
if (state == 0 || dir == NULL) {
temp = strrchr(text, '/');
if (temp) {
char *nptr;
temp++;
nptr = el_realloc(filename, (strlen(temp) + 1) *
sizeof(*nptr));
if (nptr == NULL) {
el_free(filename);
filename = NULL;
return NULL;
}
filename = nptr;
(void)strcpy(filename, temp);
len = (size_t)(temp - text); /* including last slash */
nptr = el_realloc(dirname, (len + 1) *
sizeof(*nptr));
if (nptr == NULL) {
el_free(dirname);
dirname = NULL;
return NULL;
}
dirname = nptr;
(void)strncpy(dirname, text, len);
dirname[len] = '\0';
} else {
el_free(filename);
if (*text == 0)
filename = NULL;
else {
filename = strdup(text);
if (filename == NULL)
return NULL;
}
el_free(dirname);
dirname = NULL;
}
if (dir != NULL) {
(void)closedir(dir);
dir = NULL;
}
/* support for ``~user'' syntax */
el_free(dirpath);
dirpath = NULL;
if (dirname == NULL) {
if ((dirname = strdup("")) == NULL)
return NULL;
dirpath = strdup("./");
} else if (*dirname == '~')
dirpath = fn_tilde_expand(dirname);
else
dirpath = strdup(dirname);
if (dirpath == NULL)
return NULL;
dir = opendir(dirpath);
if (!dir)
return NULL; /* cannot open the directory */
/* will be used in cycle */
filename_len = filename ? strlen(filename) : 0;
}
/* find the match */
while ((entry = readdir(dir)) != NULL) {
/* skip . and .. */
if (entry->d_name[0] == '.' && (!entry->d_name[1]
|| (entry->d_name[1] == '.' && !entry->d_name[2])))
continue;
if (filename_len == 0)
break;
/* otherwise, get first entry where first */
/* filename_len characters are equal */
if (entry->d_name[0] == filename[0]
/* Some dirents have d_namlen, but it is not portable. */
&& strlen(entry->d_name) >= filename_len
&& strncmp(entry->d_name, filename,
filename_len) == 0)
break;
}
if (entry) { /* match found */
/* Some dirents have d_namlen, but it is not portable. */
len = strlen(entry->d_name);
len = strlen(dirname) + len + 1;
temp = el_malloc(len * sizeof(*temp));
if (temp == NULL)
return NULL;
(void)snprintf(temp, len, "%s%s", dirname, entry->d_name);
} else {
(void)closedir(dir);
dir = NULL;
temp = NULL;
}
return temp;
}
/* ch_enlargebufs():
* Enlarge line buffer to be able to hold twice as much characters.
* Returns 1 if successful, 0 if not.
*/
libedit_private int
ch_enlargebufs(EditLine *el, size_t addlen)
{
size_t sz, newsz;
wchar_t *newbuffer, *oldbuf, *oldkbuf;
sz = (size_t)(el->el_line.limit - el->el_line.buffer + EL_LEAVE);
newsz = sz * 2;
/*
* If newly required length is longer than current buffer, we need
* to make the buffer big enough to hold both old and new stuff.
*/
if (addlen > sz) {
while(newsz - sz < addlen)
newsz *= 2;
}
/*
* Reallocate line buffer.
*/
newbuffer = el_realloc(el->el_line.buffer, newsz * sizeof(*newbuffer));
if (!newbuffer)
return 0;
/* zero the newly added memory, leave old data in */
(void) memset(&newbuffer[sz], 0, (newsz - sz) * sizeof(*newbuffer));
oldbuf = el->el_line.buffer;
el->el_line.buffer = newbuffer;
el->el_line.cursor = newbuffer + (el->el_line.cursor - oldbuf);
el->el_line.lastchar = newbuffer + (el->el_line.lastchar - oldbuf);
/* don't set new size until all buffers are enlarged */
el->el_line.limit = &newbuffer[sz - EL_LEAVE];
/*
* Reallocate kill buffer.
*/
newbuffer = el_realloc(el->el_chared.c_kill.buf, newsz *
sizeof(*newbuffer));
if (!newbuffer)
return 0;
/* zero the newly added memory, leave old data in */
(void) memset(&newbuffer[sz], 0, (newsz - sz) * sizeof(*newbuffer));
oldkbuf = el->el_chared.c_kill.buf;
el->el_chared.c_kill.buf = newbuffer;
el->el_chared.c_kill.last = newbuffer +
(el->el_chared.c_kill.last - oldkbuf);
el->el_chared.c_kill.mark = el->el_line.buffer +
(el->el_chared.c_kill.mark - oldbuf);
/*
* Reallocate undo buffer.
*/
newbuffer = el_realloc(el->el_chared.c_undo.buf,
newsz * sizeof(*newbuffer));
if (!newbuffer)
return 0;
/* zero the newly added memory, leave old data in */
(void) memset(&newbuffer[sz], 0, (newsz - sz) * sizeof(*newbuffer));
el->el_chared.c_undo.buf = newbuffer;
newbuffer = el_realloc(el->el_chared.c_redo.buf,
newsz * sizeof(*newbuffer));
if (!newbuffer)
return 0;
el->el_chared.c_redo.pos = newbuffer +
(el->el_chared.c_redo.pos - el->el_chared.c_redo.buf);
el->el_chared.c_redo.lim = newbuffer +
(el->el_chared.c_redo.lim - el->el_chared.c_redo.buf);
el->el_chared.c_redo.buf = newbuffer;
if (!hist_enlargebuf(el, sz, newsz))
return 0;
/* Safe to set enlarged buffer size */
el->el_line.limit = &el->el_line.buffer[newsz - EL_LEAVE];
if (el->el_chared.c_resizefun)
(*el->el_chared.c_resizefun)(el, el->el_chared.c_resizearg);
return 1;
}
