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- /*
- * dselect - Debian package maintenance user interface
- * baselist.cc - list of somethings
- *
- * Copyright © 1994,1995 Ian Jackson <ian@chiark.greenend.org.uk>
- * Copyright © 2001 Wichert Akkerman <wakkerma@debian.org>
- *
- * This is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2,
- * or (at your option) any later version.
- *
- * This is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
- #include <config.h>
- #include <compat.h>
- #include <sys/ioctl.h>
- #include <sys/termios.h>
- #include <assert.h>
- #include <ctype.h>
- #include <string.h>
- #include <unistd.h>
- #include <stdio.h>
- #include <dpkg/i18n.h>
- #include <dpkg/dpkg.h>
- #include <dpkg/dpkg-db.h>
- #include "dselect.h"
- #include "bindings.h"
- void mywerase(WINDOW *win) {
- int my,mx,y,x;
- getmaxyx(win,my,mx);
- for (y=0; y<my; y++) {
- wmove(win,y,0); for (x=0; x<mx; x++) waddch(win,' ');
- }
- wmove(win,0,0);
- }
- baselist *baselist::signallist= 0;
- void baselist::sigwinchhandler(int) {
- struct winsize size;
- if (debug) fprintf(debug,"baselist::sigwinchhandler(), signallist=%p\n",signallist);
- baselist *p= signallist;
- p->enddisplay();
- endwin(); initscr();
- if (ioctl(fileno(stdout), TIOCGWINSZ, &size) != 0) ohshite(_("ioctl(TIOCGWINSZ) failed"));
- resizeterm(size.ws_row, size.ws_col); wrefresh(curscr);
- p->startdisplay();
- if (doupdate() == ERR) ohshite(_("doupdate in SIGWINCH handler failed"));
- }
- static void cu_sigwinch(int, void **argv) {
- struct sigaction *osigactp= (struct sigaction*)argv[0];
- sigset_t *oblockedp= (sigset_t*)argv[1];
-
- if (sigaction(SIGWINCH,osigactp,0)) ohshite(_("failed to restore old SIGWINCH sigact"));
- delete osigactp;
- if (sigprocmask(SIG_SETMASK,oblockedp,0)) ohshite(_("failed to restore old signal mask"));
- delete oblockedp;
- }
- void baselist::setupsigwinch() {
- sigemptyset(&sigwinchset);
- sigaddset(&sigwinchset,SIGWINCH);
-
- osigactp= new(struct sigaction);
- oblockedp= new(sigset_t);
- if (sigprocmask(0,0,oblockedp)) ohshite(_("failed to get old signal mask"));
- if (sigaction(SIGWINCH,0,osigactp)) ohshite(_("failed to get old SIGWINCH sigact"));
- push_cleanup(cu_sigwinch,~0, 0,0, 2,(void*)osigactp,(void*)oblockedp);
- if (sigprocmask(SIG_BLOCK,&sigwinchset,0)) ohshite(_("failed to block SIGWINCH"));
- memset(&nsigact,0,sizeof(nsigact));
- nsigact.sa_handler= sigwinchhandler;
- sigemptyset(&nsigact.sa_mask);
- //nsigact.sa_flags= SA_INTERRUPT;
- if (sigaction(SIGWINCH,&nsigact,0)) ohshite(_("failed to set new SIGWINCH sigact"));
- }
- void baselist::setheights() {
- int y= ymax - (title_height + colheads_height + thisstate_height);
- assert(y>=1);
- if (showinfo==2 && y>=7) {
- list_height= 5;
- whatinfo_height= 1;
- info_height= y-6;
- } else if (showinfo==1 && y>=10) {
- list_height= y/2;
- info_height= (y-1)/2;
- whatinfo_height= 1;
- } else {
- list_height= y;
- info_height= 0;
- whatinfo_height= 0;
- }
- colheads_row= title_height;
- list_row= colheads_row + colheads_height;
- thisstate_row= list_row + list_height;
- info_row= thisstate_row + thisstate_height;
- whatinfo_row= ymax - 1;
- }
- void baselist::startdisplay() {
- if (debug) fprintf(debug,"baselist[%p]::startdisplay()\n",this);
- cbreak(); noecho(); nonl(); keypad(stdscr,TRUE);
- clear(); wnoutrefresh(stdscr);
- // find attributes
- if (has_colors() && start_color()==OK && COLOR_PAIRS >= numscreenparts) {
- int i;
- printf("allocing\n");
- for (i = 1; i < numscreenparts; i++) {
- if (init_pair(i, color[i].fore, color[i].back) != OK)
- ohshite(_("failed to allocate colour pair"));
- }
- /* TODO: should use an array of attr's, indexed by attr name. Oh well. */
- list_attr= COLOR_PAIR(list) | color[list].attr;
- listsel_attr= COLOR_PAIR(listsel) | color[listsel].attr;
- title_attr= COLOR_PAIR(title) | color[title].attr;
- thisstate_attr= COLOR_PAIR(thisstate) | color[thisstate].attr;
- selstate_attr= COLOR_PAIR(selstate) | color[selstate].attr;
- selstatesel_attr= COLOR_PAIR(selstatesel) | color[selstatesel].attr;
- colheads_attr= COLOR_PAIR(colheads) | color[colheads].attr;
- query_attr= COLOR_PAIR(query) | color[query].attr;
- info_attr= COLOR_PAIR(info) | color[info].attr;
- info_headattr= COLOR_PAIR(info_head) | color[info_head].attr;
- whatinfo_attr= COLOR_PAIR(whatinfo) | color[whatinfo].attr;
- helpscreen_attr= COLOR_PAIR(helpscreen) | color[helpscreen].attr;
- } else {
- /* User defined attributes for B&W mode are not currently supported. */
- title_attr= A_REVERSE;
- thisstate_attr= A_STANDOUT;
- list_attr= 0;
- listsel_attr= A_STANDOUT;
- selstate_attr= A_BOLD;
- selstatesel_attr= A_STANDOUT;
- colheads_attr= A_BOLD;
- query_attr= title_attr;
- info_attr= list_attr;
- info_headattr= A_BOLD;
- whatinfo_attr= thisstate_attr;
- helpscreen_attr= A_NORMAL;
- }
- // set up windows and pads, based on screen size
- getmaxyx(stdscr,ymax,xmax);
- title_height= ymax>=6;
- colheads_height= ymax>=5;
- thisstate_height= ymax>=3;
- setheights();
- setwidths();
-
- titlewin= newwin(1,xmax, 0,0);
- if (!titlewin) ohshite(_("failed to create title window"));
- wattrset(titlewin,title_attr);
-
- whatinfowin= newwin(1,xmax, whatinfo_row,0);
- if (!whatinfowin) ohshite(_("failed to create whatinfo window"));
- wattrset(whatinfowin,whatinfo_attr);
-
- listpad = newpad(ymax, total_width);
- if (!listpad) ohshite(_("failed to create baselist pad"));
-
- colheadspad= newpad(1, total_width);
- if (!colheadspad) ohshite(_("failed to create heading pad"));
- wattrset(colheadspad,colheads_attr);
-
- thisstatepad= newpad(1, total_width);
- if (!thisstatepad) ohshite(_("failed to create thisstate pad"));
- wattrset(thisstatepad,thisstate_attr);
- infopad= newpad(MAX_DISPLAY_INFO, total_width);
- if (!infopad) ohshite(_("failed to create info pad"));
- wattrset(infopad,info_attr);
- wbkgdset(infopad, ' ' | info_attr);
- querywin= newwin(1,xmax,ymax-1,0);
- if (!querywin) ohshite(_("failed to create query window"));
- wbkgdset(querywin, ' ' | query_attr);
- if (cursorline >= topofscreen + list_height) topofscreen= cursorline;
- if (topofscreen > nitems - list_height) topofscreen= nitems - list_height;
- if (topofscreen < 0) topofscreen= 0;
- infotopofscreen= 0; leftofscreen= 0;
- redrawall();
- if (debug)
- fprintf(debug,
- "baselist::startdisplay() done ...\n\n"
- " xmax=%d, ymax=%d;\n\n"
- " title_height=%d, colheads_height=%d, list_height=%d;\n"
- " thisstate_height=%d, info_height=%d, whatinfo_height=%d;\n\n"
- " colheads_row=%d, thisstate_row=%d, info_row=%d;\n"
- " whatinfo_row=%d, list_row=%d;\n\n",
- xmax, ymax,
- title_height, colheads_height, list_height,
- thisstate_height, info_height, whatinfo_height,
- colheads_row, thisstate_row, info_row,
- whatinfo_row, list_row);
- }
- void baselist::enddisplay() {
- delwin(titlewin);
- delwin(whatinfowin);
- delwin(listpad);
- delwin(colheadspad);
- delwin(thisstatepad);
- delwin(infopad);
- wmove(stdscr,ymax,0); wclrtoeol(stdscr);
- listpad= 0;
- }
- void baselist::redrawall() {
- redrawtitle();
- redrawcolheads();
- wattrset(listpad,list_attr); mywerase(listpad);
- ldrawnstart= ldrawnend= -1; // start is first drawn; end is first undrawn; -1=none
- refreshlist();
- redrawthisstate();
- redrawinfo();
- }
- void baselist::redraw1item(int index) {
- redraw1itemsel(index, index == cursorline);
- }
- baselist::baselist(keybindings *kb) {
- if (debug)
- fprintf(debug,"baselist[%p]::baselist()\n",this);
- bindings= kb;
- nitems= 0;
- xmax= -1;
- list_height=0; info_height=0;
- topofscreen= 0; leftofscreen= 0;
- listpad= 0; cursorline= -1;
- showinfo= 1;
- searchstring[0]= 0;
- }
- void baselist::itd_keys() {
- whatinfovb(_("Keybindings"));
-
- const int givek= xmax/3;
- bindings->describestart();
- const char **ta;
- while ((ta= bindings->describenext()) != 0) {
- const char **tap= ta+1;
- for (;;) {
- waddstr(infopad, gettext(*tap));
- tap++; if (!*tap) break;
- waddstr(infopad, ", ");
- }
- int y,x;
- getyx(infopad,y,x);
- if (x >= givek) y++;
- mvwaddstr(infopad, y,givek, ta[0]);
- waddch(infopad,'\n');
- }
- }
- void baselist::dosearch() {
- int offset, index;
- if (debug) fprintf(debug,"baselist[%p]::dosearch(); searchstring=`%s'\n",
- this,searchstring);
- for (offset=1, index=greaterint(topofscreen,cursorline+1);
- offset<nitems;
- offset++, index++) {
- if (index >= nitems) index -= nitems;
- if (matchsearch(index)) {
- topofscreen= index-1;
- if (topofscreen > nitems - list_height) topofscreen= nitems-list_height;
- if (topofscreen < 0) topofscreen= 0;
- setcursor(index);
- return;
- }
- }
- beep();
- }
- void baselist::refreshinfo() {
- pnoutrefresh(infopad, infotopofscreen,leftofscreen, info_row,0,
- lesserint(info_row + info_height - 1, info_row + MAX_DISPLAY_INFO - 1),
- lesserint(total_width - leftofscreen - 1, xmax - 1));
-
- if (whatinfo_height) {
- mywerase(whatinfowin);
- mvwaddstr(whatinfowin,0,0, whatinfovb.string());
- if (infolines > info_height) {
- wprintw(whatinfowin,_(" -- %d%%, press "),
- (int)((infotopofscreen + info_height) * 100.0 / infolines));
- if (infotopofscreen + info_height < infolines) {
- wprintw(whatinfowin,_("%s for more"), bindings->find("iscrollon"));
- if (infotopofscreen) waddstr(whatinfowin, ", ");
- }
- if (infotopofscreen)
- wprintw(whatinfowin, _("%s to go back"),bindings->find("iscrollback"));
- waddch(whatinfowin,'.');
- }
- wnoutrefresh(whatinfowin);
- }
- }
- void baselist::wordwrapinfo(int offset, const char *m) {
- int usemax= xmax-5;
- if (debug) fprintf(debug,"baselist[%p]::wordwrapinfo(%d, `%s')\n",this,offset,m);
- int wrapping=0;
- for (;;) {
- int offleft=offset; while (*m == ' ' && offleft>0) { m++; offleft--; }
- const char *p= strchr(m,'\n');
- int l= p ? (int)(p-m) : strlen(m);
- while (l && isspace(m[l-1])) l--;
- if (!l || (*m == '.' && l == 1)) {
- if (wrapping) waddch(infopad,'\n');
- waddch(infopad,'\n');
- wrapping= 0;
- } else if (*m == ' ' || usemax < 10) {
- if (wrapping) waddch(infopad,'\n');
- waddnstr(infopad, m, l);
- waddch(infopad,'\n'); wrapping= 0;
- } else {
- int x,y;
- if (wrapping) {
- getyx(infopad, y,x);
- if (x+1 >= usemax) {
- waddch(infopad,'\n');
- } else {
- waddch(infopad,' ');
- }
- }
- for (;;) {
- getyx(infopad, y,x);
- int dosend= usemax-x;
- if (l <= dosend) {
- dosend=l;
- } else {
- int i=dosend;
- while (i > 0 && m[i] != ' ') i--;
- if (i > 0 || x > 0) dosend=i;
- }
- if (dosend) waddnstr(infopad, m, dosend);
- while (dosend < l && m[dosend] == ' ') dosend++;
- l-= dosend; m+= dosend;
- if (l <= 0) break;
- waddch(infopad,'\n');
- }
- wrapping= 1;
- }
- if (!p) break;
- if (getcury(infopad) == (MAX_DISPLAY_INFO - 1)) {
- waddstr(infopad,
- "[The package description is too long and has been truncated...]");
- break;
- }
- m= ++p;
- }
- if (debug) fprintf(debug,"baselist[%p]::wordwrapinfo() done\n",this);
- }
- baselist::~baselist() { }
- /* vi: sw=2 ts=8
- */
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