X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Ftty%2Fhardscroll.c;h=f7c9e0d46f5295b95525da1cdc45da3fa02404f5;hp=5486b6d5a6c30d070a5c796c3b301ef9ea1cde0c;hb=c3b21f65a2687f3894a0d3217006c23f162c893a;hpb=f70db18a0c3c6a828d8a5999be37239f01c9d98a diff --git a/ncurses/tty/hardscroll.c b/ncurses/tty/hardscroll.c index 5486b6d5..f7c9e0d4 100644 --- a/ncurses/tty/hardscroll.c +++ b/ncurses/tty/hardscroll.c @@ -1,5 +1,5 @@ /**************************************************************************** - * Copyright (c) 1998-2000,2006 Free Software Foundation, Inc. * + * Copyright (c) 1998-2015,2016 Free Software Foundation, Inc. * * * * Permission is hereby granted, free of charge, to any person obtaining a * * copy of this software and associated documentation files (the * @@ -29,6 +29,8 @@ /**************************************************************************** * Author: Zeyd M. Ben-Halim 1992,1995 * * and: Eric S. Raymond * + * and: Thomas E. Dickey 1996-on * + * and: Alexander V Lukyanov 1997-1998 * ****************************************************************************/ /****************************************************************************** @@ -145,86 +147,104 @@ AUTHOR #include -MODULE_ID("$Id: hardscroll.c,v 1.38 2006/12/30 22:19:34 tom Exp $") +MODULE_ID("$Id: hardscroll.c,v 1.53 2016/05/28 23:32:40 tom Exp $") #if defined(SCROLLDEBUG) || defined(HASHDEBUG) # undef screen_lines -# define screen_lines MAXLINES -NCURSES_EXPORT_VAR(int) -oldnums[MAXLINES]; -# define OLDNUM(n) oldnums[n] +# define screen_lines(sp) MAXLINES +NCURSES_EXPORT_VAR (int) + oldnums[MAXLINES]; +# define OLDNUM(sp,n) oldnums[n] # define _tracef printf # undef TR # define TR(n, a) if (_nc_tracing & (n)) { _tracef a ; putchar('\n'); } +extern NCURSES_EXPORT_VAR(unsigned) _nc_tracing; + #else /* no debug */ /* OLDNUM(n) indicates which line will be shifted to the position n. if OLDNUM(n) == _NEWINDEX, then the line n in new, not shifted from somewhere. */ -NCURSES_EXPORT_VAR(int *) -_nc_oldnums = 0; /* obsolete: keep for ABI compat */ +NCURSES_EXPORT_VAR (int *) + _nc_oldnums = 0; /* obsolete: keep for ABI compat */ # if USE_HASHMAP -# define oldnums SP->_oldnum_list -# define OLDNUM(n) oldnums[n] -# else /* !USE_HASHMAP */ -# define OLDNUM(n) newscr->_line[n].oldindex -# endif /* !USE_HASHMAP */ +# define oldnums(sp) (sp)->_oldnum_list +# define OLDNUM(sp,n) oldnums(sp)[n] +# else /* !USE_HASHMAP */ +# define OLDNUM(sp,n) NewScreen(sp)->_line[n].oldindex +# endif /* !USE_HASHMAP */ -#define OLDNUM_SIZE SP->_oldnum_size +#define OLDNUM_SIZE(sp) (sp)->_oldnum_size #endif /* defined(SCROLLDEBUG) || defined(HASHDEBUG) */ NCURSES_EXPORT(void) -_nc_scroll_optimize(void) +NCURSES_SP_NAME(_nc_scroll_optimize) (NCURSES_SP_DCL0) /* scroll optimization to transform curscr to newscr */ { int i; int start, end, shift; - TR(TRACE_ICALLS, ("_nc_scroll_optimize() begins")); + TR(TRACE_ICALLS, (T_CALLED("_nc_scroll_optimize(%p)"), (void *) SP_PARM)); #if !defined(SCROLLDEBUG) && !defined(HASHDEBUG) #if USE_HASHMAP /* get enough storage */ - if (OLDNUM_SIZE < screen_lines) { - int *new_oldnums = typeRealloc(int, screen_lines, oldnums); + assert(OLDNUM_SIZE(SP_PARM) >= 0); + assert(screen_lines(SP_PARM) > 0); + if ((oldnums(SP_PARM) == 0) + || (OLDNUM_SIZE(SP_PARM) < screen_lines(SP_PARM))) { + int need_lines = ((OLDNUM_SIZE(SP_PARM) < screen_lines(SP_PARM)) + ? screen_lines(SP_PARM) + : OLDNUM_SIZE(SP_PARM)); + int *new_oldnums = typeRealloc(int, + (size_t) need_lines, + oldnums(SP_PARM)); if (!new_oldnums) return; - oldnums = new_oldnums; - OLDNUM_SIZE = screen_lines; + oldnums(SP_PARM) = new_oldnums; + OLDNUM_SIZE(SP_PARM) = need_lines; } /* calculate the indices */ - _nc_hash_map(); + NCURSES_SP_NAME(_nc_hash_map) (NCURSES_SP_ARG); #endif #endif /* !defined(SCROLLDEBUG) && !defined(HASHDEBUG) */ #ifdef TRACE - if (_nc_tracing & (TRACE_UPDATE | TRACE_MOVE)) - _nc_linedump(); + if (USE_TRACEF(TRACE_UPDATE | TRACE_MOVE)) { + NCURSES_SP_NAME(_nc_linedump) (NCURSES_SP_ARG); + _nc_unlock_global(tracef); + } #endif /* TRACE */ /* pass 1 - from top to bottom scrolling up */ - for (i = 0; i < screen_lines;) { - while (i < screen_lines && (OLDNUM(i) == _NEWINDEX || OLDNUM(i) <= i)) + for (i = 0; i < screen_lines(SP_PARM);) { + while (i < screen_lines(SP_PARM) + && (OLDNUM(SP_PARM, i) == _NEWINDEX || OLDNUM(SP_PARM, i) <= i)) i++; - if (i >= screen_lines) + if (i >= screen_lines(SP_PARM)) break; - shift = OLDNUM(i) - i; /* shift > 0 */ + shift = OLDNUM(SP_PARM, i) - i; /* shift > 0 */ start = i; i++; - while (i < screen_lines && OLDNUM(i) != _NEWINDEX && OLDNUM(i) - i - == shift) + while (i < screen_lines(SP_PARM) + && OLDNUM(SP_PARM, i) != _NEWINDEX + && OLDNUM(SP_PARM, i) - i == shift) i++; end = i - 1 + shift; TR(TRACE_UPDATE | TRACE_MOVE, ("scroll [%d, %d] by %d", start, end, shift)); #if !defined(SCROLLDEBUG) && !defined(HASHDEBUG) - if (_nc_scrolln(shift, start, end, screen_lines - 1) == ERR) { + if (NCURSES_SP_NAME(_nc_scrolln) (NCURSES_SP_ARGx + shift, + start, + end, + screen_lines(SP_PARM) - 1) == ERR) { TR(TRACE_UPDATE | TRACE_MOVE, ("unable to scroll")); continue; } @@ -232,47 +252,79 @@ _nc_scroll_optimize(void) } /* pass 2 - from bottom to top scrolling down */ - for (i = screen_lines - 1; i >= 0;) { - while (i >= 0 && (OLDNUM(i) == _NEWINDEX || OLDNUM(i) >= i)) + for (i = screen_lines(SP_PARM) - 1; i >= 0;) { + while (i >= 0 + && (OLDNUM(SP_PARM, i) == _NEWINDEX + || OLDNUM(SP_PARM, i) >= i)) { i--; + } if (i < 0) break; - shift = OLDNUM(i) - i; /* shift < 0 */ + shift = OLDNUM(SP_PARM, i) - i; /* shift < 0 */ end = i; i--; - while (i >= 0 && OLDNUM(i) != _NEWINDEX && OLDNUM(i) - i == shift) + while (i >= 0 + && OLDNUM(SP_PARM, i) != _NEWINDEX + && OLDNUM(SP_PARM, i) - i == shift) { i--; + } start = i + 1 - (-shift); TR(TRACE_UPDATE | TRACE_MOVE, ("scroll [%d, %d] by %d", start, end, shift)); #if !defined(SCROLLDEBUG) && !defined(HASHDEBUG) - if (_nc_scrolln(shift, start, end, screen_lines - 1) == ERR) { + if (NCURSES_SP_NAME(_nc_scrolln) (NCURSES_SP_ARGx + shift, + start, + end, + screen_lines(SP_PARM) - 1) == ERR) { TR(TRACE_UPDATE | TRACE_MOVE, ("unable to scroll")); continue; } #endif /* !defined(SCROLLDEBUG) && !defined(HASHDEBUG) */ } + TR(TRACE_ICALLS, (T_RETURN(""))); +} + +#if NCURSES_SP_FUNCS +NCURSES_EXPORT(void) +_nc_scroll_optimize(void) +{ + NCURSES_SP_NAME(_nc_scroll_optimize) (CURRENT_SCREEN); } +#endif #if defined(TRACE) || defined(SCROLLDEBUG) || defined(HASHDEBUG) NCURSES_EXPORT(void) -_nc_linedump(void) +NCURSES_SP_NAME(_nc_linedump) (NCURSES_SP_DCL0) /* dump the state of the real and virtual oldnum fields */ { - int n; char *buf = 0; - size_t want = (screen_lines + 1) * 4; + size_t want = ((size_t) screen_lines(SP_PARM) + 1) * 4; + (void) SP_PARM; - buf = typeMalloc(char, want); + if ((buf = typeMalloc(char, want)) != 0) { + int n; - (void) strcpy(buf, "virt"); - for (n = 0; n < screen_lines; n++) - (void) sprintf(buf + strlen(buf), " %02d", OLDNUM(n)); - TR(TRACE_UPDATE | TRACE_MOVE, (buf)); - free(buf); + *buf = '\0'; + for (n = 0; n < screen_lines(SP_PARM); n++) + _nc_SPRINTF(buf + strlen(buf), + _nc_SLIMIT(want - strlen(buf)) + " %02d", OLDNUM(SP_PARM, n)); + TR(TRACE_UPDATE | TRACE_MOVE, ("virt %s", buf)); + free(buf); + } } + +#if NCURSES_SP_FUNCS +NCURSES_EXPORT(void) +_nc_linedump(void) +{ + NCURSES_SP_NAME(_nc_linedump) (CURRENT_SCREEN); +} +#endif + #endif /* defined(TRACE) || defined(SCROLLDEBUG) */ #ifdef SCROLLDEBUG @@ -288,7 +340,7 @@ main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED) for (;;) { int n; - for (n = 0; n < screen_lines; n++) + for (n = 0; n < screen_lines(sp); n++) oldnums[n] = _NEWINDEX; /* grab the test vector */