2 * dselect - Debian package maintenance user interface
3 * baselist.cc - list of somethings
5 * Copyright © 1994,1995 Ian Jackson <ijackson@chiark.greenend.org.uk>
6 * Copyright © 2001 Wichert Akkerman <wakkerma@debian.org>
7 * Copyright © 2007-2013 Guillem Jover <guillem@debian.org>
9 * This is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program. If not, see <https://www.gnu.org/licenses/>.
26 #include <sys/ioctl.h>
35 #include <dpkg/i18n.h>
36 #include <dpkg/c-ctype.h>
37 #include <dpkg/dpkg.h>
38 #include <dpkg/dpkg-db.h>
43 void mywerase(WINDOW *win) {
46 for (y=0; y<my; y++) {
47 wmove(win,y,0); for (x=0; x<mx; x++) waddch(win,' ');
52 baselist *baselist::signallist = nullptr;
53 void baselist::sigwinchhandler(int) {
54 int save_errno = errno;
56 debug(dbg_general, "baselist::sigwinchhandler(), signallist=%p", signallist);
57 baselist *p= signallist;
60 if (ioctl(fileno(stdout), TIOCGWINSZ, &size) != 0) ohshite(_("ioctl(TIOCGWINSZ) failed"));
61 resizeterm(size.ws_row, size.ws_col); wrefresh(curscr);
63 if (doupdate() == ERR) ohshite(_("doupdate in SIGWINCH handler failed"));
67 static void cu_sigwinch(int, void **argv) {
68 struct sigaction *osigactp= (struct sigaction*)argv[0];
69 sigset_t *oblockedp= (sigset_t*)argv[1];
71 if (sigaction(SIGWINCH, osigactp, nullptr))
72 ohshite(_("failed to restore old SIGWINCH sigact"));
74 if (sigprocmask(SIG_SETMASK, oblockedp, nullptr))
75 ohshite(_("failed to restore old signal mask"));
80 baselist::sigwinch_mask(int how)
83 sigemptyset(&sigwinchset);
84 sigaddset(&sigwinchset,SIGWINCH);
86 int rc = sigprocmask(how, &sigwinchset, nullptr);
88 if (how == SIG_UNBLOCK)
89 ohshite(_("failed to unblock SIGWINCH"));
91 ohshite(_("failed to block SIGWINCH"));
96 baselist::setupsigwinch()
98 struct sigaction *osigactp = new(struct sigaction);
99 sigset_t *oblockedp = new(sigset_t);
100 if (sigprocmask(0, nullptr, oblockedp))
101 ohshite(_("failed to get old signal mask"));
102 if (sigaction(SIGWINCH, nullptr, osigactp))
103 ohshite(_("failed to get old SIGWINCH sigact"));
105 push_cleanup(cu_sigwinch, ~0, nullptr, 0, 2, osigactp, oblockedp);
107 sigwinch_mask(SIG_BLOCK);
109 struct sigaction nsigact;
110 memset(&nsigact,0,sizeof(nsigact));
111 nsigact.sa_handler= sigwinchhandler;
112 sigemptyset(&nsigact.sa_mask);
113 //nsigact.sa_flags= SA_INTERRUPT;
114 if (sigaction(SIGWINCH, &nsigact, nullptr))
115 ohshite(_("failed to set new SIGWINCH sigact"));
119 baselist::add_column(column &col, const char *title, int width)
125 col_cur_x += col.width + gap_width;
129 baselist::end_column(column &col, const char *title)
133 col.width = total_width - col.x;
135 col_cur_x += col.width + gap_width;
139 baselist::draw_column_head(column &col)
141 mvwaddnstr(colheadspad, 0, col.x, col.title, col.width);
145 baselist::draw_column_sep(column &col, int y)
147 mvwaddch(listpad, y, col.x - 1, ' ');
151 baselist::draw_column_item(column &col, int y, const char *item)
153 mvwprintw(listpad, y, col.x, "%-*.*s", col.width, col.width, item);
156 void baselist::setheights() {
157 int y= ymax - (title_height + colheads_height + thisstate_height);
159 if (showinfo==2 && y>=7) {
163 } else if (showinfo==1 && y>=10) {
165 info_height= (y-1)/2;
172 colheads_row= title_height;
173 list_row= colheads_row + colheads_height;
174 thisstate_row= list_row + list_height;
175 info_row= thisstate_row + thisstate_height;
176 whatinfo_row= ymax - 1;
179 void baselist::startdisplay() {
180 debug(dbg_general, "baselist[%p]::startdisplay()", this);
181 cbreak(); noecho(); nonl(); keypad(stdscr,TRUE);
182 clear(); wnoutrefresh(stdscr);
185 if (has_colors() && start_color()==OK && COLOR_PAIRS >= numscreenparts) {
187 printf("allocing\n");
188 for (i = 1; i < numscreenparts; i++) {
189 if (init_pair(i, color[i].fore, color[i].back) != OK)
190 ohshite(_("failed to allocate colour pair"));
191 part_attr[i] = COLOR_PAIR(i) | color[i].attr;
194 /* User defined attributes for B&W mode are not currently supported. */
195 part_attr[title] = A_REVERSE;
196 part_attr[thisstate] = A_STANDOUT;
198 part_attr[listsel] = A_STANDOUT;
199 part_attr[selstate] = A_BOLD;
200 part_attr[selstatesel] = A_STANDOUT;
201 part_attr[colheads]= A_BOLD;
202 part_attr[query] = part_attr[title];
203 part_attr[info_body] = part_attr[list];
204 part_attr[info_head] = A_BOLD;
205 part_attr[whatinfo] = part_attr[thisstate];
206 part_attr[helpscreen] = A_NORMAL;
209 // set up windows and pads, based on screen size
210 getmaxyx(stdscr,ymax,xmax);
211 title_height= ymax>=6;
212 colheads_height= ymax>=5;
213 thisstate_height= ymax>=3;
218 titlewin= newwin(1,xmax, 0,0);
219 if (!titlewin) ohshite(_("failed to create title window"));
220 wattrset(titlewin, part_attr[title]);
222 whatinfowin= newwin(1,xmax, whatinfo_row,0);
223 if (!whatinfowin) ohshite(_("failed to create whatinfo window"));
224 wattrset(whatinfowin, part_attr[whatinfo]);
226 listpad = newpad(ymax, total_width);
227 if (!listpad) ohshite(_("failed to create baselist pad"));
229 colheadspad= newpad(1, total_width);
230 if (!colheadspad) ohshite(_("failed to create heading pad"));
231 wattrset(colheadspad, part_attr[colheads]);
233 thisstatepad= newpad(1, total_width);
234 if (!thisstatepad) ohshite(_("failed to create thisstate pad"));
235 wattrset(thisstatepad, part_attr[thisstate]);
237 infopad= newpad(MAX_DISPLAY_INFO, total_width);
238 if (!infopad) ohshite(_("failed to create info pad"));
239 wattrset(infopad, part_attr[info_body]);
240 wbkgdset(infopad, ' ' | part_attr[info_body]);
242 querywin= newwin(1,xmax,ymax-1,0);
243 if (!querywin) ohshite(_("failed to create query window"));
244 wbkgdset(querywin, ' ' | part_attr[query]);
246 if (cursorline >= topofscreen + list_height) topofscreen= cursorline;
247 if (topofscreen > nitems - list_height) topofscreen= nitems - list_height;
248 if (topofscreen < 0) topofscreen= 0;
250 infotopofscreen= 0; leftofscreen= 0;
255 "baselist::startdisplay() done ...\n\n"
256 " xmax=%d, ymax=%d;\n\n"
257 " title_height=%d, colheads_height=%d, list_height=%d;\n"
258 " thisstate_height=%d, info_height=%d, whatinfo_height=%d;\n\n"
259 " colheads_row=%d, thisstate_row=%d, info_row=%d;\n"
260 " whatinfo_row=%d, list_row=%d;\n\n",
261 xmax, ymax, title_height, colheads_height, list_height,
262 thisstate_height, info_height, whatinfo_height,
263 colheads_row, thisstate_row, info_row, whatinfo_row, list_row);
266 void baselist::enddisplay() {
271 delwin(thisstatepad);
273 wmove(stdscr,ymax,0); wclrtoeol(stdscr);
278 void baselist::redrawall() {
281 wattrset(listpad, part_attr[list]);
283 ldrawnstart= ldrawnend= -1; // start is first drawn; end is first undrawn; -1=none
289 void baselist::redraw1item(int index) {
290 redraw1itemsel(index, index == cursorline);
293 baselist::baselist(keybindings *kb) {
294 debug(dbg_general, "baselist[%p]::baselist()", this);
301 total_width = max(TOTAL_LIST_WIDTH, COLS);
311 thisstate_height = 0;
326 colheadspad = nullptr;
327 thisstatepad = nullptr;
330 whatinfowin = nullptr;
340 void baselist::itd_keys() {
341 whatinfovb(_("Keybindings"));
343 const int givek= xmax/3;
344 bindings->describestart();
346 while ((ta = bindings->describenext()) != nullptr) {
347 const char **tap= ta+1;
349 waddstr(infopad, gettext(*tap));
350 tap++; if (!*tap) break;
351 waddstr(infopad, ", ");
356 mvwaddstr(infopad, y,givek, ta[0]);
357 waddch(infopad,'\n');
362 void baselist::dosearch() {
364 debug(dbg_general, "baselist[%p]::dosearch(); searchstring='%s'",
366 for (offset = 1, index = max(topofscreen, cursorline + 1);
369 if (index >= nitems) index -= nitems;
370 if (matchsearch(index)) {
371 topofscreen= index-1;
372 if (topofscreen > nitems - list_height) topofscreen= nitems-list_height;
373 if (topofscreen < 0) topofscreen= 0;
381 void baselist::refreshinfo() {
382 pnoutrefresh(infopad, infotopofscreen,leftofscreen, info_row,0,
383 min(info_row + info_height - 1, info_row + MAX_DISPLAY_INFO - 1),
384 min(total_width - leftofscreen - 1, xmax - 1));
386 if (whatinfo_height) {
387 mywerase(whatinfowin);
388 mvwaddstr(whatinfowin,0,0, whatinfovb.string());
389 if (infolines > info_height) {
390 wprintw(whatinfowin,_(" -- %d%%, press "),
391 (int)((infotopofscreen + info_height) * 100.0 / infolines));
392 if (infotopofscreen + info_height < infolines) {
393 wprintw(whatinfowin,_("%s for more"), bindings->find("iscrollon"));
394 if (infotopofscreen) waddstr(whatinfowin, ", ");
397 wprintw(whatinfowin, _("%s to go back"),bindings->find("iscrollback"));
398 waddch(whatinfowin,'.');
400 wnoutrefresh(whatinfowin);
404 void baselist::wordwrapinfo(int offset, const char *m) {
406 debug(dbg_general, "baselist[%p]::wordwrapinfo(%d, '%s')", this, offset, m);
407 bool wrapping = false;
410 int offleft=offset; while (*m == ' ' && offleft>0) { m++; offleft--; }
411 const char *p= strchr(m,'\n');
412 int l= p ? (int)(p-m) : strlen(m);
413 while (l && c_isspace(m[l - 1]))
415 if (!l || (*m == '.' && l == 1)) {
416 if (wrapping) waddch(infopad,'\n');
417 waddch(infopad, '\n');
419 } else if (*m == ' ' || usemax < 10) {
420 if (wrapping) waddch(infopad,'\n');
421 waddnstr(infopad, m, l);
422 waddch(infopad, '\n');
425 int x, y DPKG_ATTR_UNUSED;
430 waddch(infopad,'\n');
437 int dosend= usemax-x;
442 while (i > 0 && m[i] != ' ') i--;
443 if (i > 0 || x > 0) dosend=i;
445 if (dosend) waddnstr(infopad, m, dosend);
446 while (dosend < l && m[dosend] == ' ') dosend++;
447 l-= dosend; m+= dosend;
449 waddch(infopad,'\n');
454 if (getcury(infopad) == (MAX_DISPLAY_INFO - 1)) {
456 "[The package description is too long and has been truncated...]");
461 debug(dbg_general, "baselist[%p]::wordwrapinfo() done", this);
464 baselist::~baselist() { }