v01i036: UNIFY(r) Screens with Curses, Part 4 of 4
Brandon S. Allbery
allbery at ncoast.UUCP
Sun Jan 31 14:16:49 AEST 1988
Comp.sources.misc: Volume 2, Issue 36
Submitted-By: The Moderator <allbery at ncoast.UUCP>
Archive-Name: usc/Part4
I've received so many requests for my Unify(r) screen routines that I am
posting them. The USC library is in four parts; unshar them and type "make".
The curses used is System V; BSDers will want to tweak the usual stuff, such
as beep() and cbreak().
I also have a simple screen program using this; if demand warrants, I will
post it -- but in terms of features, you're probably better off with ENTER.
#--------------------------------CUT HERE-------------------------------------
#! /bin/sh
#
# This is a shell archive. Save this into a file, edit it
# and delete all lines above this comment. Then give this
# file to sh by executing the command "sh file". The files
# will be extracted into the current directory owned by
# you with default permissions.
#
# The files contained herein are:
#
# -r--r--r-- 1 allbery users 2258 Jan 30 18:01 utime.c
# -r--r--r-- 1 allbery users 2712 Jan 30 18:01 xerror.c
# -rw-r--r-- 1 allbery users 222 Jan 30 18:01 xrc.h
# -r--r--r-- 1 allbery users 1363 Jan 30 18:01 xsfldesc.c
# -rw-r--r-- 1 allbery users 540 Jan 30 18:01 xsfldesc.h
# -r--r--r-- 1 allbery users 784 Jan 30 18:01 xsize.c
# -r--r--r-- 1 allbery users 1444 Jan 30 18:01 yorn.c
# -r--r--r-- 1 allbery users 8188 Jan 30 18:01 zoom.c
#
echo 'x - utime.c'
if test -f utime.c; then echo 'shar: not overwriting utime.c'; else
sed 's/^X//' << '________This_Is_The_END________' > utime.c
X/*
X * $Header: utime.c,v 1.5 87/06/09 11:53:19 brandon Exp $
X *
X * ``USC'' -- UNIFY(r) Screens using Curses
X * UNIFY(r) is a registered trademark of Unify Corporation.
X *
X * THIS PROGRAM IS NOT BASED ON COPYRIGHTED CODE OF UNIFY CORPORATION, AND
X * IS HEREBY PLACED IN THE PUBLIC DOMAIN.
X *
X * $Log: utime.c,v $
X * Revision 1.5 87/06/09 11:53:19 brandon
X * Right-justified buffer display; repositioned cursor after conversion errors.
X *
X * Revision 1.4 87/06/01 08:37:49 brandon
X * Added ^V (view) capability for related records.
X *
X * Revision 1.3 87/05/27 14:43:30 brandon
X * Made sure buffer was padded with spaces.
X *
X * Revision 1.2 87/05/26 14:29:40 brandon
X * Well, utime() was the culprit (be nice if I could read!)-:
X *
X * Revision 1.1 87/05/26 13:34:36 brandon
X * Initial revision
X *
X * Revision 1.4 87/05/12 13:26:31 brandon
X * Dumb bug in : parsing.
X *
X * Revision 1.3 87/05/12 12:04:10 brandon
X * Changed to pass FWD, BACK, GO without checking the data buffer
X *
X * Revision 1.2 87/04/29 11:30:53 brandon
X * Added RCS header information
X *
X */
X
X/*LINTLIBRARY*/
X
X#include "usc.h"
X
X/*
X * Get a time. H:M only.
X */
X
Xint updtime(buf)
Xshort *buf; {
X int cnt, rc, hr, min, y, x;
X char ibuf[6];
X
X setraw();
X (void) sprintf(ibuf, "%02d:%02d", *buf / 60, *buf % 60);
X getyx(stdscr, y, x);
X for (;;) {
X (void) move(y, x);
X if ((rc = inl(ibuf, 5, 0)) == BACK || rc == FWD || rc == GO || rc == LOOK)
X return rc;
X for (cnt = 0; cnt < 5 && ibuf[cnt] == ' '; cnt++)
X ;
X if (cnt == 5) {
X prtmsg(1, 23, "Invalid time");
X continue;
X }
X if (!isdigit(cnt)) {
X prtmsg(1, 23, "Invalid time");
X continue;
X }
X hr = 0;
X min = 0;
X while (cnt < 5 && isdigit(ibuf[cnt])) {
X hr *= 10;
X hr += ibuf[cnt++] - '0';
X }
X if (cnt > 2 || ibuf[cnt++] != ':') {
X prtmsg(1, 23, "Invalid time");
X continue;
X }
X if (!isdigit(ibuf[cnt])) {
X prtmsg(1, 23, "Invalid time");
X continue;
X }
X min = 10 * (ibuf[cnt++] - '0');
X if (!isdigit(ibuf[cnt])) {
X prtmsg(1, 23, "Invalid time");
X continue;
X }
X min += ibuf[cnt++] - '0';
X while (cnt < 5)
X if (ibuf[cnt++] != ' ') {
X prtmsg(1, 23, "Invalid time");
X continue;
X }
X if (hr < 23 && min < 59)
X break;
X prtmsg(1, 23, "Invalid time");
X }
X return rc;
X}
________This_Is_The_END________
if test `wc -l < utime.c` -ne 97; then
echo 'shar: utime.c was damaged during transit (should have been 97 bytes)'
fi
fi ; : end of overwriting check
echo 'x - xerror.c'
if test -f xerror.c; then echo 'shar: not overwriting xerror.c'; else
sed 's/^X//' << '________This_Is_The_END________' > xerror.c
X/*
X * $Header: xerror.c,v 1.9 87/05/29 10:53:45 brandon Exp $
X *
X * ``USC'' -- UNIFY(r) Screens using Curses
X * UNIFY(r) is a registered trademark of Unify Corporation.
X *
X * THIS PROGRAM IS NOT BASED ON COPYRIGHTED CODE OF UNIFY CORPORATION, AND
X * IS HEREBY PLACED IN THE PUBLIC DOMAIN.
X *
X * $Log: xerror.c,v $
X * Revision 1.9 87/05/29 10:53:45 brandon
X * Have to deal with an error before the screen is set up (was dumping core on
X * endwin() with stdscr == NULL).
X *
X * Revision 1.8 87/05/12 10:57:56 brandon
X * Tried a better way of resetting to standard terminal mode.
X *
X * Revision 1.7 87/05/11 17:03:57 brandon
X * oops! "errprog" -> "errcall"
X *
X * Revision 1.6 87/05/11 16:57:44 brandon
X * added an error hook (primary use is to dump core on error exit)
X *
X * Revision 1.5 87/05/11 14:12:33 brandon
X * rearranged order of echo() kludge and other I/O routines to make sure it
X * takes
X *
X * Revision 1.4 87/05/11 13:32:41 brandon
X * echo() call conflicts with unify; changed to system("stty echo") [UGH!]
X *
X * Revision 1.3 87/05/01 16:15:06 brandon
X * V_prgnm turned out to be defined in libx.a (unify).
X *
X * Revision 1.2 87/04/29 11:31:27 brandon
X * Added RCS header information
X *
X */
X
X/*LINTLIBRARY*/
X
X#include "usc.h"
X#include <varargs.h>
X
X/*
X * Error log operations. We try to emulate UNIFY 3.2's error log stuff, but
X * it's not absolutely essential that we succeed (thankfully).
X *
X * A side benefit of this for pre-3.2 users is that the error log is used
X * regardless of the UNIFY version. (The error log should have been in the
X * first version of UNIFY.)
X */
X
Xextern int errno;
Xextern char *V_prgnm;
X
Xchar errcall[30] = "xerror";
Xvoid (*errhook)() = (void (*)()) 0;
X
X/*VARARGS*/
Xxerror(va_alist)
Xva_dcl {
X va_list args;
X int ier;
X char *fnm, *fmt;
X FILE *errlog;
X long now;
X
X if (stdscr != (WINDOW *) 0)
X (void) endwin();
X va_start(args);
X ier = va_arg(args, int);
X fnm = va_arg(args, char *);
X fmt = va_arg(args, char *);
X if ((errlog = _dbfopen("errlog", "a")) == (FILE *) 0) {
X errlog = stderr;
X (void) fprintf(stderr, "\r\nInternal error %d/%d from %s: ", ier, errno, fnm);
X }
X else {
X now = time((long *) 0);
X (void) fprintf(errlog, "\n***\n\n%s\nProgram: %s\nCalling function: %s\nOffending function: %s\nStatus: %d\nErrno: %d\nNotes: ",
X ctime(&now), V_prgnm, errcall, fnm, ier, errno);
X (void) fprintf(stderr, "\r\nAn internal program error has occurred. Please see the error log for details.\r\n\r\n\r\n");
X }
X (void) vfprintf(errlog, fmt, args);
X va_end(args);
X if (errlog == stderr)
X (void) fprintf(stderr, "\r\n\r\n");
X else
X (void) putc('\n', errlog);
X if (errhook != (void (*)()) 0)
X (*errhook)(ier, fnm, errcall);
X exit(99);
X}
________This_Is_The_END________
if test `wc -l < xerror.c` -ne 93; then
echo 'shar: xerror.c was damaged during transit (should have been 93 bytes)'
fi
fi ; : end of overwriting check
echo 'x - xrc.h'
if test -f xrc.h; then echo 'shar: not overwriting xrc.h'; else
sed 's/^X//' << '________This_Is_The_END________' > xrc.h
Xextern int setxrc();
X
X#define XRC_GO 1 /* allow new return code -5 (also -6 if XRC_XOK) */
X#define XRC_XOK 2 /* allow new return code -7 (also -6 if XRC_GO) */
X#define XRC_LOOK 4 /* allow new return code -8 (internal) */
________This_Is_The_END________
if test `wc -l < xrc.h` -ne 5; then
echo 'shar: xrc.h was damaged during transit (should have been 5 bytes)'
fi
fi ; : end of overwriting check
echo 'x - xsfldesc.c'
if test -f xsfldesc.c; then echo 'shar: not overwriting xsfldesc.c'; else
sed 's/^X//' << '________This_Is_The_END________' > xsfldesc.c
X/*
X * $Header: xsfldesc.c,v 1.6 87/05/11 15:50:16 brandon Exp $
X *
X * ``USC'' -- UNIFY(r) Screens using Curses
X * UNIFY(r) is a registered trademark of Unify Corporation.
X *
X * THIS PROGRAM IS NOT BASED ON COPYRIGHTED CODE OF UNIFY CORPORATION, AND
X * IS HEREBY PLACED IN THE PUBLIC DOMAIN.
X *
X * $Log: xsfldesc.c,v $
X * Revision 1.6 87/05/11 15:50:16 brandon
X * removed debugging
X *
X * Revision 1.5 87/05/11 15:47:13 brandon
X * another check added
X *
X * Revision 1.4 87/05/11 15:42:25 brandon
X * wrong debug sring
X *
X * Revision 1.3 87/05/11 15:38:54 brandon
X * bugchk
X *
X * Revision 1.2 87/04/29 11:31:28 brandon
X * Added RCS header information
X *
X */
X
X/*LINTLIBRARY*/
X
X#include "usc.h"
X
X/*
X * ENTRY POINT: xsfldesc() -- Return complete screen field description
X *
X * DIFFERENCE FROM UNIFY: This function is not provided in the UNIFY screen
X * interface. Its purpose is to allow screen fields to be examined or set
X * from a program. In particular, a program may load extended attributes
X * (uppercase shifting only at present) for screen fields, which will then be
X * used automatically by inbuf() and input().
X *
X * This function returns a pointer to the internal screen field structure,
X * which is delared in xsfdesc.h.
X */
X
Xstruct q *xsfldesc(sfld) {
X if (sfld < 0 || sfld >= __nsf)
X return (struct q *) 0;
X return &__scf[sfld];
X}
________This_Is_The_END________
if test `wc -l < xsfldesc.c` -ne 49; then
echo 'shar: xsfldesc.c was damaged during transit (should have been 49 bytes)'
fi
fi ; : end of overwriting check
echo 'x - xsfldesc.h'
if test -f xsfldesc.h; then echo 'shar: not overwriting xsfldesc.h'; else
sed 's/^X//' << '________This_Is_The_END________' > xsfldesc.h
X/*
X * The internal screen field structure. xsfldesc() return a POINTER to the
X * actual struct, so be careful!!! Only one update operation is defined: to
X * OR the flag UPCASE (below) with it to tell USC to force input to be upper
X * case on the field.
X */
X
Xstruct xsfldesc {
X char xsf_nam[8];
X char xsf_dbfld[44];
X short xsf_fld;
X short xsf_typ;
X short xsf_len;
X short xsf_col;
X short xsf_lin;
X char xsf_prmp[40];
X short xsf_pcol;
X short xsf_plin;
X};
X
X#define XSFLDESC struct xsfldesc
X#define UPCASE 0x80
X
Xextern XSFLDESC *xsfldesc();
________This_Is_The_END________
if test `wc -l < xsfldesc.h` -ne 24; then
echo 'shar: xsfldesc.h was damaged during transit (should have been 24 bytes)'
fi
fi ; : end of overwriting check
echo 'x - xsize.c'
if test -f xsize.c; then echo 'shar: not overwriting xsize.c'; else
sed 's/^X//' << '________This_Is_The_END________' > xsize.c
X/*
X * $Header: xsize.c,v 1.1 87/05/12 10:49:42 brandon Exp $
X *
X * ``USC'' -- UNIFY(r) Screens using Curses
X * UNIFY(r) is a registered trademark of Unify Corporation.
X *
X * THIS PROGRAM IS NOT BASED ON COPYRIGHTED CODE OF UNIFY CORPORATION, AND
X * IS HEREBY PLACED IN THE PUBLIC DOMAIN.
X *
X * $Log: xsize.c,v $
X * Revision 1.1 87/05/12 10:49:42 brandon
X * Initial revision
X *
X */
X
X/*LINTLIBRARY*/
X
X#include "usc.h"
X
X/*
X * The "xsize" function returns the external size of a screen field.
X */
X
Xint xsize(typ, len) {
X switch (typ) {
X case INT:
X case LONG:
X case STRNG:
X return len;
X case DATE:
X return 8;
X case HR:
X return 5;
X case AMT:
X case HAMT:
X return len + 3;
X case FLT:
X return len / 10;
X default:
X xerror(typ, "xsize", "Unknown internal type");
X /*NOTREACHED*/
X }
X}
________This_Is_The_END________
if test `wc -l < xsize.c` -ne 43; then
echo 'shar: xsize.c was damaged during transit (should have been 43 bytes)'
fi
fi ; : end of overwriting check
echo 'x - yorn.c'
if test -f yorn.c; then echo 'shar: not overwriting yorn.c'; else
sed 's/^X//' << '________This_Is_The_END________' > yorn.c
X/*
X * $Header: yorn.c,v 1.5 87/06/01 11:26:32 brandon Exp $
X *
X * ``USC'' -- UNIFY(r) Screens using Curses
X * UNIFY(r) is a registered trademark of Unify Corporation.
X *
X * THIS PROGRAM IS NOT BASED ON COPYRIGHTED CODE OF UNIFY CORPORATION, AND
X * IS HEREBY PLACED IN THE PUBLIC DOMAIN.
X *
X * $Log: yorn.c,v $
X * Revision 1.5 87/06/01 11:26:32 brandon
X * After adding code to save the upshift state, I forgot to assign the new
X * state. (oops :-)
X *
X * Revision 1.4 87/06/01 11:15:46 brandon
X * Smartened up response and cleared prompt before returning
X *
X * Revision 1.3 87/05/26 13:34:48 brandon
X * Uses update mode with default = 'N'.
X *
X * Revision 1.2 87/04/29 11:31:30 brandon
X * Added RCS header information
X *
X */
X
X/*LINTLIBRARY*/
X
X#include "usc.h"
X
X/*
X * ENTRY POINT: yorn() -- Ask for confirmation of an operation
X *
X * DIFFERENCE FROM UNIFY: None.
X */
X
Xyorn(prompt)
Xchar *prompt; {
X char ib[1];
X int oucf, ier;
X
X setraw();
X (void) mvaddstr(22, 1, prompt);
X for (;;) {
X ib[0] = 'N';
X oucf = _sh_up;
X _sh_up = 1;
X ier = inl(ib, 1, 0);
X _sh_up = oucf;
X switch (ier) {
X case FWD_OK:
X break;
X case BACK:
X case BACK_OK:
X case GO:
X case GO_OK:
X case FWD:
X ib[0] = 'N';
X }
X switch (ib[0]) {
X case 'Y':
X case 'y':
X (void) move(22, 1);
X (void) clrtoeol();
X return 1;
X case 'N':
X case 'n':
X (void) move(22, 1);
X (void) clrtoeol();
X return 0;
X }
X prtmsg(1, 23, "Please enter Y or N");
X }
X}
________This_Is_The_END________
if test `wc -l < yorn.c` -ne 73; then
echo 'shar: yorn.c was damaged during transit (should have been 73 bytes)'
fi
fi ; : end of overwriting check
echo 'x - zoom.c'
if test -f zoom.c; then echo 'shar: not overwriting zoom.c'; else
sed 's/^X//' << '________This_Is_The_END________' > zoom.c
X/*
X * $Header: zoom.c,v 1.11 87/06/09 12:34:44 brandon Exp $
X *
X * ``USC'' -- UNIFY(r) Screens using Curses
X * UNIFY(r) is a registered trademark of Unify Corporation.
X *
X * THIS PROGRAM IS NOT BASED ON COPYRIGHTED CODE OF UNIFY CORPORATION, AND
X * IS HEREBY PLACED IN THE PUBLIC DOMAIN.
X *
X * $Log: zoom.c,v $
X * Revision 1.11 87/06/09 12:34:44 brandon
X * OOPS! Wanted wattroff(), *used* attroff().... sigh.
X *
X * Revision 1.10 87/06/09 12:31:57 brandon
X * Added RV "cursor"; fixed clearing on last page.
X *
X * Revision 1.9 87/06/03 13:17:30 brandon
X * Fixed final paging bugs; now full functional.
X *
X * Revision 1.8 87/06/03 11:10:01 brandon
X * Added extra refresh() so the cursor will end up in the NEW window. I hope.
X *
X * Revision 1.7 87/06/02 12:51:55 brandon
X * Linted.
X *
X * Revision 1.6 87/06/02 12:34:22 brandon
X * Linted.
X *
X * Revision 1.5 87/06/02 12:16:40 brandon
X * Changed error() to xerror(); also ifdefed for Unify 3.2 (it won't work under
X * earlier versions, since it uses the new data dictionary access calls).
X *
X * Revision 1.4 87/06/01 16:43:29 brandon
X * Now uses incs() (input character by status code) instead of getchar().
X *
X * Revision 1.3 87/06/01 10:05:16 brandon
X * Made sure current-record cursor stayed in place on FWD from last record.
X *
X * Revision 1.2 87/06/01 09:35:01 brandon
X * Added touchwin() to fix curses bug with missing touchwin() in delwin().
X * (This bug is actually a holdover from the old curses.??!)
X *
X * Revision 1.1 87/06/01 08:31:27 brandon
X * Initial revision
X *
X */
X
X/*LINTLIBRARY*/
X
X#ifndef UNIFY32
X#ifndef lint
Xstatic char dummy = '\0'; /* dumb loaders (Sys III) need this, alas */
X#endif
X#else
X
X#include "usc.h"
X#ifdef TG
X#include "tgraph.h"
X#else
X#ifndef ACS_HLINE
X#define ACS_HLINE '-'
X#define ACS_VLINE '|'
X#define ACS_LLCORNER '`'
X#define ACS_ULCORNER ','
X#define ACS_LRCORNER '\''
X#define ACS_URCORNER '.'
X#define ACS_TTEE '+'
X#define ACS_BTEE '+'
X#endif
X#endif
X
Xextern char *fldsyn();
Xextern long atol();
X
X/*
X * When XRC_LOOK is enabled and ^V is entered in a field with an explicit
X * relationship, zoom() is invoked to display a browse window. The user may
X * then move around within the window, select a record, and return, which
X * causes that record's key to be entered as the value of the field.
X *
X * TAB move up one record
X * RET move down one record
X * ^F move forward one page
X * ^B move back
X * ^V exit without returning a value
X * ESC exit and return key of current record
X */
X
Xzoom(x, y, fld, fdp, buf)
XFLDESC *fdp;
Xchar *buf; {
X WINDOW *w;
X int nfld, bfld, cnt, len, ier;
X int *bwf;
X long myloc, endloc, pageloc, lastrec;
X FLDESC fd;
X char xbuf[256];
X
X nfld = 0;
X for (bfld = numflds(); bfld > 0; bfld--)
X if (fldesc(bfld, &fd) && fd.f_rec == fdp->f_rprec && fd.f_typ != COMB)
X nfld++;
X if ((bwf = (int *) malloc((unsigned) (nfld + 1) * sizeof *bwf)) == (int *) 0)
X xerror("zoom", 0, "out of memory at field %d", fld);
X bwf[nfld--] = 0;
X for (bfld = numflds(); bfld > 0; bfld--)
X if (fldesc(bfld, &fd) && fd.f_rec == fdp->f_rprec && fd.f_typ != COMB)
X bwf[nfld--] = bfld;
X len = 3;
X for (nfld = 0; bwf[nfld] != 0; nfld++) {
X (void) fldesc(bwf[nfld], &fd);
X if ((bfld = strlen(fldsyn(bwf[nfld]))) > fd.f_len)
X fd.f_len = bfld;
X if ((len += fd.f_len + 1) >= COLS)
X break;
X }
X if (bwf[nfld] != 0) {
X len -= fd.f_len + 1;
X bwf[nfld] = 0;
X }
X if (LINES - y < 5)
X y = LINES - 5;
X if ((x -= len - 2) < 0)
X x = 0;
X if ((w = newwin(LINES - y - 1, len, y, x)) == (WINDOW *) 0)
X xerror("zoom", 0, "can't allocate window");
X /* now ready to display stuff in our pet window */
X#ifdef TG
X graph("");
X#endif
X (void) box(w, ACS_VLINE, ACS_HLINE);
X (void) mvwaddch(w, 0, 0, ACS_ULCORNER);
X (void) mvwaddch(w, LINES - y - 2, 0, ACS_LLCORNER);
X (void) mvwaddch(w, LINES - y - 2, len - 1, ACS_LRCORNER);
X (void) mvwaddch(w, 0, len - 1, ACS_URCORNER);
X cnt = 2;
X for (nfld = 0; bwf[nfld + 1] != 0; nfld++) {
X (void) fldesc(bwf[nfld], &fd);
X if ((bfld = strlen(fldsyn(bwf[nfld]))) > fd.f_len)
X fd.f_len = bfld;
X cnt += fd.f_len;
X (void) mvwaddch(w, 0, cnt, ACS_TTEE);
X (void) mvwaddch(w, LINES - y - 2, cnt, ACS_BTEE);
X cnt++;
X }
X (void) wmove(w, 1, 2);
X for (nfld = 0; bwf[nfld] != 0; nfld++) {
X (void) fldesc(bwf[nfld], &fd);
X if ((bfld = strlen(fldsyn(bwf[nfld]))) > fd.f_len)
X fd.f_len = bfld;
X (void) wattron(w, A_UNDERLINE);
X (void) wprintw(w, "%-*.*s", fd.f_len, fd.f_len, fldsyn(bwf[nfld]));
X (void) wattroff(w, A_UNDERLINE);
X if (bwf[nfld + 1] != 0)
X (void) waddch(w, ACS_VLINE);
X }
X myloc = 1;
X pageloc = 1;
X lastrec = sort(fdp->f_rprec);
X for (;;) {
X cnt = 2;
X endloc = pageloc;
X for (ier = sethere(fdp->f_rprec, pageloc); cnt < LINES - y - 2 && ier == 0; ier = sethere(fdp->f_rprec, ++endloc)) {
X (void) mvwaddch(w, cnt, 1, ' ');
X for (nfld = 0; bwf[nfld] != 0; nfld++) {
X (void) fldesc(bwf[nfld], &fd);
X (void) gprint(bwf[nfld], xbuf);
X if ((bfld = strlen(fldsyn(bwf[nfld]))) > fd.f_len)
X fd.f_len = bfld;
X if (myloc == endloc)
X (void) wattron(w, A_STANDOUT);
X (void) wprintw(w, "%-*.*s", fd.f_len, fd.f_len, xbuf);
X if (myloc == endloc)
X (void) wattroff(w, A_STANDOUT);
X if (bwf[nfld + 1] != 0)
X (void) waddch(w, ACS_VLINE);
X }
X cnt++;
X }
X endloc--;
X/* if (myloc < pageloc || myloc > endloc)
X myloc = pageloc; */
X while (cnt < LINES - y - 2) {
X (void) mvwaddch(w, cnt, 1, ' ');
X for (nfld = 0; bwf[nfld] != 0; nfld++) {
X (void) fldesc(bwf[nfld], &fd);
X if ((bfld = strlen(fldsyn(bwf[nfld]))) > fd.f_len)
X fd.f_len = bfld;
X (void) wprintw(w, "%*s", fd.f_len, "");
X if (bwf[nfld + 1] != 0)
X (void) waddch(w, ACS_VLINE);
X }
X cnt++;
X }
X cnt = myloc - pageloc;
X (void) wattron(w, A_STANDOUT);
X (void) mvwaddch(w, 2 + cnt, 1, '>');
X (void) wattroff(w, A_STANDOUT);
X (void) wmove(w, 2 + cnt, 1);
X (void) refresh(); /* so the next one places the cursor */
X (void) wrefresh(w);
X ier = 0;
X switch (incs(XRC_GO|XRC_LOOK|XRC_CFB|XRC_NOFLSH)) {
X case GO:
X if ((ier = sethere(fdp->f_rprec, myloc)) != 0) {
X prtmsg(1, 23, "Record not available");
X continue;
X }
X (void) gfield(fdp->f_rpfld, buf);
X ier = 1;
X /*FALLTHROUGH*/
X case LOOK:
X unsort(fdp->f_rprec);
X (void) delwin(w);
X (void) touchwin(stdscr);
X free((char *) bwf);
X return (ier? OK: FWD);
X case FWD:
X if (++myloc <= endloc)
X break;
X if (myloc > lastrec)
X myloc = lastrec;
X /*FALLTHROUGH*/
X case CFWD:
X if ((pageloc += LINES - y - 4) > lastrec) {
X prtmsg(1, 23, "There is no next page");
X pageloc -= LINES - y - 4;
X }
X break;
X case BACK:
X if (--myloc >= pageloc)
X break;
X if (myloc < 0)
X myloc = 0;
X /*FALLTHROUGH*/
X case CBACK:
X if ((pageloc -= LINES - y - 4) < 1) {
X prtmsg(1, 23, "There is no previous page");
X pageloc = 1;
X }
X break;
X default:
X (void) beep();
X }
X }
X}
X
X/*****************************************************************************/
X
Xstatic FILE *_F_ = (FILE *) 0;
Xstatic int _S_ = 0;
X
Xsort(r) {
X int ier, key;
X long nrec, here;
X FLDESC fd;
X char buf[1024], t[50];
X
X if (_F_ != (FILE *) 0)
X unsort(r);
X (void) sprintf(t, "/tmp/,zt%05d", getpid());
X if ((_F_ = fopen(t, "w")) == (FILE *) 0)
X xerror("zoomsort", 0, "cannot create tag file %s", t);
X (void) fldesc(key = reckey(r), &fd);
X nrec = 0L;
X for (ier = seqacc(r, 1); ier == 0; ier = seqacc(r, 2)) {
X nrec++;
X (void) gprint(key, buf);
X (void) loc(r, &here);
X (void) sprintf(buf + fd.f_len, "%09ld\n", here);
X (void) fputs(buf, _F_);
X }
X (void) fclose(_F_);
X switch (fork()) {
X case -1:
X xerror("zoomsort", 0, "cannot fork");
X case 0:
X (void) sprintf(buf, "-0.%d", fd.f_len);
X (void) execlp("sort", "sort", "+0", buf, t, "-o", t, (char *) 0);
X _exit(-1);
X default:
X (void) wait((int *) 0);
X }
X if ((_F_ = fopen(t, "r")) == (FILE *) 0)
X xerror("zoomsort", -1, "cannot reopen tagfile %s", t);
X (void) unlink(t);
X _S_ = fd.f_len + 10;
X return nrec;
X}
X
Xunsort(r) {
X (void) fclose(_F_);
X _F_ = (FILE *) 0;
X _S_ = 0;
X}
X
Xsethere(r, pos)
Xlong pos; {
X char buf[1024];
X
X (void) fseek(_F_, (pos - 1) * _S_, 0);
X if (fgets(buf, sizeof buf, _F_) == (char *) 0)
X return -1;
X return setloc(r, atol(buf + _S_ - 10));
X}
X
X#endif
________This_Is_The_END________
if test `wc -l < zoom.c` -ne 307; then
echo 'shar: zoom.c was damaged during transit (should have been 307 bytes)'
fi
fi ; : end of overwriting check
exit 0
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