Point
line_end_position (int count)
{
Point pt = line_beginning_position (count);
pt.o = astr_len (get_line_text (pt.p));
return pt;
}
static int
find_substr (astr as, const char *s2, size_t s2size, size_t from, size_t to,
bool forward, bool notbol, bool noteol, bool regex, bool icase)
{
int ret = -1;
struct re_pattern_buffer pattern;
struct re_registers search_regs;
reg_syntax_t syntax = RE_SYNTAX_EMACS;
memset (&pattern, 0, sizeof (pattern));
if (!regex)
syntax |= RE_PLAIN;
if (icase)
syntax |= RE_ICASE;
re_set_syntax (syntax);
search_regs.num_regs = 1;
re_find_err = re_compile_pattern (s2, (int) s2size, &pattern);
pattern.not_bol = notbol;
pattern.not_eol = noteol;
if (!re_find_err)
ret = re_search (&pattern, astr_cstr (as), (int) astr_len (as), forward ? from : to - 1,
forward ? (to - from) : -(to - 1 - from), &search_regs);
if (ret >= 0)
{
ret = forward ? search_regs.end[0] : ret;
free (search_regs.start);
free (search_regs.end);
}
regfree (&pattern);
return ret;
}
static bool
search (Point pt, const char *s, int forward, int regexp)
{
Line *lp = pt.p;
astr as = get_line_text (lp);
size_t ssize = strlen (s), from = 0, to = astr_len (as);
bool downcase = get_variable_bool ("case-fold-search") && no_upper (s, ssize, regexp);
bool notbol = false, noteol = false;
int pos;
if (ssize < 1)
return false;
/* Match first line. */
if (forward)
{
notbol = pt.o > from;
from = pt.o;
}
else
{
noteol = pt.o < to;
to = pt.o;
}
pos = find_substr (as, s, ssize, from, to, forward, notbol, noteol, regexp, downcase);
/* Match following lines. */
while (pos < 0)
{
lp = (forward ? get_line_next : get_line_prev) (lp);
if (lp == get_buffer_lines (cur_bp))
break;
as = get_line_text (lp);
pos = find_substr (as, s, ssize, 0, astr_len (as), forward, false, false, regexp, downcase);
}
if (pos < 0)
return false;
while (get_buffer_pt (cur_bp).p != lp)
(forward ? next_line : previous_line) ();
pt = get_buffer_pt (cur_bp);
pt.o = pos;
set_buffer_pt (cur_bp, pt);
thisflag |= FLAG_NEED_RESYNC;
return true;
}
Point point_max(void)
{
Point pt;
pt.p = list_prev(cur_bp->lines);
pt.n = cur_bp->num_lines;
pt.o = astr_len(list_prev(cur_bp->lines)->item);
return pt;
}
Point
point_max (void)
{
Point pt;
pt.p = get_line_prev (get_buffer_lines (cur_bp));
pt.n = get_buffer_last_line (cur_bp);
pt.o = astr_len (get_line_text (get_line_prev (get_buffer_lines (cur_bp))));
return pt;
}
static void draw_line(size_t line, size_t startcol, Window *wp, Line *lp,
size_t lineno, Region *r, int highlight)
{
size_t x, i;
term_move(line, 0);
for (x = 0, i = startcol; i < astr_len(lp->item) && x < wp->ewidth; i++) {
if (highlight && in_region(lineno, i, r))
outch(*astr_char(lp->item, (ptrdiff_t)i), FONT_REVERSE, &x);
else
outch(*astr_char(lp->item, (ptrdiff_t)i), FONT_NORMAL, &x);
}
draw_end_of_line(line, wp, lineno, r, highlight, x, i);
}
int point_dist(Point pt1, Point pt2)
{
int size = 0;
Line *lp;
if (cmp_point(pt1, pt2) > 0)
swap_point(&pt1, &pt2);
for (lp = pt1.p; ; lp = list_next(lp)) {
size += astr_len(lp->item);
if (lp == pt1.p)
size -= pt1.o;
if (lp == pt2.p) {
size -= astr_len(lp->item) - pt2.o;
break;
}
else
size++;
}
return size;
}
static void draw_status_line(size_t line, Window *wp)
{
size_t i;
char *buf, *eol_type;
Point pt = window_pt(wp);
astr as, bs;
term_attrset(1, FONT_REVERSE);
term_move(line, 0);
for (i = 0; i < wp->ewidth; ++i)
term_addch('-');
if (cur_bp->eol == coding_eol_cr)
eol_type = "(Mac)";
else if (cur_bp->eol == coding_eol_crlf)
eol_type = "(DOS)";
else
eol_type = ":";
term_move(line, 0);
bs = astr_afmt(astr_new(), "(%d,%d)", pt.n+1, get_goalc_wp(wp));
as = astr_afmt(astr_new(), "--%s%2s %-15s %s %-9s (Text",
eol_type, make_mode_line_flags(wp), wp->bp->name,
make_screen_pos(wp, &buf), astr_cstr(bs));
free(buf);
astr_delete(bs);
if (wp->bp->flags & BFLAG_AUTOFILL)
astr_cat_cstr(as, " Fill");
if (wp->bp->flags & BFLAG_OVERWRITE)
astr_cat_cstr(as, " Ovwrt");
if (thisflag & FLAG_DEFINING_MACRO)
astr_cat_cstr(as, " Def");
if (wp->bp->flags & BFLAG_ISEARCH)
astr_cat_cstr(as, " Isearch");
astr_cat_char(as, ')');
term_addnstr(astr_cstr(as), min(term_width(), astr_len(as)));
astr_delete(as);
term_attrset(1, FONT_NORMAL);
}
/* set up the appropriate watch on the directory indicated by sfilename */
static int setup_inotify_watch(int notify_fd, struct astr *sfilename) {
char dirbuf[astr_len(sfilename) + 1];
char *dir;
int dwatch;
strcpy(dirbuf, astr_cstr(sfilename));
dir = dirname(dirbuf);
dwatch = inotify_add_watch(notify_fd, dir,
IN_CLOSE_WRITE|IN_MOVED_TO);
if(dwatch <= 0) {
fprintf(stderr,
ERRORTEXT("Fatal: failed to add inotify watch for %s")
": %s\n", dir, strerror(errno));
exit(EXIT_FAILURE);
}
return dwatch;
}
/*
* Copy a region of text into an allocated buffer.
*/
char *
copy_text_block (size_t startn, size_t starto, size_t size)
{
char *buf, *dp;
size_t max_size, n, i;
Line *lp;
max_size = 10;
dp = buf = (char *) xzalloc (max_size);
lp = cur_bp->pt.p;
n = cur_bp->pt.n;
if (n > startn)
do
lp = lp->prev;
while (--n > startn);
else if (n < startn)
do
lp = lp->next;
while (++n < startn);
for (i = starto; dp - buf < (int) size;)
{
if (dp >= buf + max_size)
{
int save_off = dp - buf;
max_size += 10;
buf = (char *) xrealloc (buf, max_size);
dp = buf + save_off;
}
if (i < astr_len (lp->text))
*dp++ = *astr_char (lp->text, (ptrdiff_t) (i++));
else
{
*dp++ = '\n';
lp = lp->next;
i = 0;
}
}
return buf;
}
/*
* Return the current directory.
*/
static astr get_current_dir(void)
{
astr buf;
int p;
if (cur_bp->filename != NULL)
/* If the current buffer has a filename, get the current directory
name from it. */
buf = astr_new_cstr(cur_bp->filename);
else { /* Get the current directory name from the system. */
buf = agetcwd();
if (astr_len(buf) != 0 && *astr_char(buf, -1) != '/')
astr_cat_char(buf, '/');
}
p = astr_rfind_cstr(buf, "/");
astr_truncate(buf, p + 1);
return buf;
}
/*
* Return a `~/foo' like path if the user is under his home directory,
* else the unmodified path.
*/
astr
compact_path (astr path)
{
struct passwd *pw = getpwuid (getuid ());
if (pw != NULL)
{
/* Replace `/userhome/' (if found) with `~/'. */
size_t homelen = strlen (pw->pw_dir);
if (homelen > 0 && pw->pw_dir[homelen - 1] == '/')
homelen--;
if (astr_len (path) > homelen &&
!strncmp (pw->pw_dir, astr_cstr (path), homelen) &&
astr_get (path, homelen) == '/')
astr_cpy (path, astr_cat_cstr (astr_new_cstr ("~/"),
astr_cstr (path) + homelen + 1));
}
return path;
}
static int kill_line(int literally)
{
if (!eolp()) {
if (warn_if_readonly_buffer())
return FALSE;
undo_save(UNDO_INSERT_BLOCK, cur_bp->pt,
astr_len(cur_bp->pt.p->item) - cur_bp->pt.o, 0);
undo_nosave = TRUE;
while (!eolp()) {
kill_ring_push(following_char());
FUNCALL(delete_char);
}
undo_nosave = FALSE;
thisflag |= FLAG_DONE_KILL;
if (!literally)
return TRUE;
}
if (list_next(cur_bp->pt.p) != cur_bp->lines) {
if (!FUNCALL(delete_char))
return FALSE;
kill_ring_push('\n');
thisflag |= FLAG_DONE_KILL;
return TRUE;
}
minibuf_error("End of buffer");
return FALSE;
}
Point line_end_position(int count)
{
Point pt = line_beginning_position(count);
pt.o = astr_len(pt.p->item);
return pt;
}
/*
* This functions does some corrections and expansions to
* the passed path:
*
* - expands `~/' and `~name/' expressions;
* - replaces `//' with `/' (restarting from the root directory);
* - removes `..' and `.' entries.
*
* The return value indicates success or failure.
*/
bool
expand_path (astr path)
{
int ok = true;
const char *sp = astr_cstr (path);
astr epath = astr_new ();
if (*sp != '/' && *sp != '~')
{
astr_cat (epath, agetcwd ());
if (astr_len (epath) == 0 ||
astr_get (epath, astr_len (epath) - 1) != '/')
astr_cat_char (epath, '/');
}
for (const char *p = sp; *p != '\0';)
{
if (*p == '/')
{
if (*++p == '/')
{ /* Got `//'. Restart from this point. */
while (*p == '/')
p++;
astr_truncate (epath, 0);
}
if (astr_len (epath) == 0 ||
astr_get (epath, astr_len (epath) - 1) != '/')
astr_cat_char (epath, '/');
}
else if (*p == '~' && (p == sp || p[-1] == '/'))
{ /* Got `/~' or leading `~'. Restart from this point. */
struct passwd *pw;
astr_truncate (epath, 0);
++p;
if (*p == '/')
{ /* Got `~/'. Insert the user's home directory. */
pw = getpwuid (getuid ());
if (pw == NULL)
{
ok = false;
break;
}
if (!STREQ (pw->pw_dir, "/"))
astr_cat_cstr (epath, pw->pw_dir);
}
else
{ /* Got `~something'. Insert that user's home directory. */
astr as = astr_new ();
while (*p != '\0' && *p != '/')
astr_cat_char (as, *p++);
pw = getpwnam (astr_cstr (as));
if (pw == NULL)
{
ok = false;
break;
}
astr_cat_cstr (epath, pw->pw_dir);
}
}
else if (*p == '.' && (p[1] == '/' || p[1] == '\0'))
{ /* Got `.'. */
++p;
}
else if (*p == '.' && p[1] == '.' && (p[2] == '/' || p[2] == '\0'))
{ /* Got `..'. */
if (astr_len (epath) >= 1 && astr_get (epath, astr_len (epath) - 1) == '/')
astr_truncate (epath, astr_len (epath) - 1);
while (astr_get (epath, astr_len (epath) - 1) != '/' && astr_len (epath) >= 1)
astr_truncate (epath, astr_len (epath) - 1);
p += 2;
}
if (*p != '~')
while (*p != '\0' && *p != '/')
astr_cat_char (epath, *p++);
}
astr_cpy (path, epath);
return ok;
}
static astr
do_minibuf_read (const char *prompt, const char *value, size_t pos,
Completion * cp, History * hp)
{
static int overwrite_mode = 0;
int c, thistab, lasttab = -1;
size_t prompt_len;
char *s;
astr as = astr_new_cstr (value), saved = NULL;
prompt_len = strlen (prompt);
if (pos == SIZE_MAX)
pos = astr_len (as);
for (;;)
{
switch (lasttab)
{
case COMPLETION_MATCHEDNONUNIQUE:
s = " [Complete, but not unique]";
break;
case COMPLETION_NOTMATCHED:
s = " [No match]";
break;
case COMPLETION_MATCHED:
s = " [Sole completion]";
break;
default:
s = "";
}
draw_minibuf_read (prompt, astr_cstr (as), prompt_len, s, pos);
thistab = -1;
switch (c = getkey ())
{
case KBD_NOKEY:
break;
case KBD_CTRL | 'z':
FUNCALL (suspend_emacs);
break;
case KBD_RET:
term_move (term_height () - 1, 0);
term_clrtoeol ();
if (saved)
astr_delete (saved);
return as;
case KBD_CANCEL:
term_move (term_height () - 1, 0);
term_clrtoeol ();
if (saved)
astr_delete (saved);
astr_delete (as);
return NULL;
case KBD_CTRL | 'a':
case KBD_HOME:
pos = 0;
break;
case KBD_CTRL | 'e':
case KBD_END:
pos = astr_len (as);
break;
case KBD_CTRL | 'b':
case KBD_LEFT:
if (pos > 0)
--pos;
else
ding ();
break;
case KBD_CTRL | 'f':
case KBD_RIGHT:
if (pos < astr_len (as))
++pos;
else
ding ();
break;
case KBD_CTRL | 'k':
/* FIXME: do kill-register save. */
if (pos < astr_len (as))
astr_truncate (as, pos);
else
ding ();
break;
case KBD_BS:
if (pos > 0)
astr_remove (as, --pos, 1);
else
ding ();
break;
case KBD_CTRL | 'd':
case KBD_DEL:
if (pos < astr_len (as))
astr_remove (as, pos, 1);
else
ding ();
break;
case KBD_INS:
overwrite_mode = overwrite_mode ? 0 : 1;
break;
case KBD_META | 'v':
case KBD_PGUP:
if (cp == NULL)
{
ding ();
break;
}
if (get_completion_flags (cp) & CFLAG_POPPEDUP)
{
completion_scroll_down ();
thistab = lasttab;
}
break;
case KBD_CTRL | 'v':
case KBD_PGDN:
if (cp == NULL)
{
ding ();
break;
}
if (get_completion_flags (cp) & CFLAG_POPPEDUP)
{
completion_scroll_up ();
thistab = lasttab;
}
break;
case KBD_UP:
case KBD_META | 'p':
if (hp)
{
const char *elem = previous_history_element (hp);
if (elem)
{
if (!saved)
saved = astr_cpy (astr_new (), as);
astr_cpy_cstr (as, elem);
}
}
break;
case KBD_DOWN:
case KBD_META | 'n':
if (hp)
{
const char *elem = next_history_element (hp);
if (elem)
astr_cpy_cstr (as, elem);
else if (saved)
{
astr_cpy (as, saved);
astr_delete (saved);
saved = NULL;
}
}
break;
case KBD_TAB:
got_tab:
if (cp == NULL)
{
ding ();
break;
}
if (lasttab != -1 && lasttab != COMPLETION_NOTMATCHED
&& get_completion_flags (cp) & CFLAG_POPPEDUP)
{
completion_scroll_up ();
thistab = lasttab;
}
else
{
astr bs = astr_new ();
astr_cpy (bs, as);
thistab = completion_try (cp, bs, true);
astr_delete (bs);
switch (thistab)
{
case COMPLETION_MATCHED:
case COMPLETION_MATCHEDNONUNIQUE:
case COMPLETION_NONUNIQUE:
{
bs = astr_new ();
if (get_completion_flags (cp) & CFLAG_FILENAME)
astr_cat (bs, get_completion_path (cp));
astr_ncat_cstr (bs, get_completion_match (cp), get_completion_matchsize (cp));
if (strncmp (astr_cstr (as), astr_cstr (bs),
astr_len (bs)) != 0)
thistab = -1;
astr_delete (as);
as = bs;
pos = astr_len (as);
break;
}
case COMPLETION_NOTMATCHED:
ding ();
}
}
break;
case ' ':
if (cp != NULL)
goto got_tab;
/* FALLTHROUGH */
default:
if (c > 255 || !isprint (c))
{
ding ();
break;
}
astr_insert_char (as, pos++, c);
if (overwrite_mode && pos != astr_len (as))
astr_remove (as, pos, 1);
}
lasttab = thistab;
}
}
/*
* This functions does some corrections and expansions to
* the passed path:
* - expands `~/' and `~name/' expressions;
* - replaces `//' with `/' (restarting from the root directory);
* - removes `..' and `.' entries.
*
* If something goes wrong, the string is deleted and NULL returned
*/
astr expand_path(astr path)
{
int ret = TRUE;
struct passwd *pw;
const char *sp = astr_cstr(path);
astr epath = astr_new();
if (*sp != '/') {
astr_cat_delete(epath, agetcwd());
if (astr_len(epath) == 0 || *astr_char(epath, -1) != '/')
astr_cat_char(epath, '/');
}
while (*sp != '\0') {
if (*sp == '/') {
if (*++sp == '/') {
/* Got `//'. Restart from this point. */
while (*sp == '/')
sp++;
astr_truncate(epath, 0);
}
astr_cat_char(epath, '/');
} else if (*sp == '~') {
if (*(sp + 1) == '/') {
/* Got `~/'. Restart from this point and insert the user's
home directory. */
astr_truncate(epath, 0);
if ((pw = getpwuid(getuid())) == NULL) {
ret = FALSE;
break;
}
if (strcmp(pw->pw_dir, "/") != 0)
astr_cat_cstr(epath, pw->pw_dir);
++sp;
} else {
/* Got `~something'. Restart from this point and insert that
user's home directory. */
astr as = astr_new();
astr_truncate(epath, 0);
++sp;
while (*sp != '\0' && *sp != '/')
astr_cat_char(as, *sp++);
pw = getpwnam(astr_cstr(as));
astr_delete(as);
if (pw == NULL) {
ret = FALSE;
break;
}
astr_cat_cstr(epath, pw->pw_dir);
}
} else if (*sp == '.') {
if (*(sp + 1) == '/' || *(sp + 1) == '\0') {
++sp;
if (*sp == '/' && *(sp + 1) != '/')
++sp;
} else if (*(sp + 1) == '.' &&
(*(sp + 2) == '/' || *(sp + 2) == '\0')) {
if (astr_len(epath) >= 1 && *astr_char(epath, -1) == '/')
astr_truncate(epath, -1);
while (*astr_char(epath, -1) != '/' &&
astr_len(epath) >= 1)
astr_truncate(epath, -1);
sp += 2;
if (*sp == '/' && *(sp + 1) != '/')
++sp;
} else
goto got_component;
} else {
const char *p;
got_component:
p = sp;
while (*p != '\0' && *p != '/')
p++;
if (*p == '\0') { /* Final filename */
astr_cat_cstr(epath, sp);
break;
} else { /* Non-final directory */
while (*sp != '/')
astr_cat_char(epath, *sp++);
}
}
}
astr_cpy(path, epath);
astr_delete(epath);
if (!ret) {
astr_delete(path);
return NULL;
}
return path;
}
