/* $Id$ */
/*
* pmore: piaip's more, a new replacement for traditional pager
*
* piaip's new implementation of pager(more) with mmap,
* designed for unlimilited length(lines).
*
* "pmore" is "piaip's more", NOT "PTT's more"!!!
* pmore is designed for general BBS systems, not
* specific to any branch.
*
* Author: Hung-Te Lin (piaip), June 2005.
* <piaip@csie.ntu.edu.tw>
* All Rights Reserved.
*
* MAJOR IMPROVEMENTS:
* - Clean source code, and more readble to mortal
* - Correct navigation
* - Excellent search ability (for correctness and user behavior)
* - Less memory consumption (mmap is not considered anyway)
* - Better support for large terminals
* - Unlimited file length and line numbers
*
* TODO ANE DONE:
* - Optimized speed up with Scroll supporting [done]
* - Support PTT_PRINTS [done]
* - Wrap long lines [done]
* - DBCS friendly wrap [done]
* - ASCII Art movie support [done]
* - Left-right wide navigation [done]
* - Reenrtance for main procedure [done with little hack]
* -
* - A new optimized terminal base system (piterm)
* - ASCII Art movie navigation keys
*/
// --------------------------------------------------------------- <FEATURES>
/* These are default values.
* You may override them in your bbs.h or config.h etc etc.
*/
#define PMORE_PRELOAD_SIZE (64*1024L) // on busy system set smaller or undef
#define PMORE_USE_PTT_PRINTS // support PTT or special printing
#define PMORE_USE_OPT_SCROLL // optimized scroll
#define PMORE_USE_DBCS_WRAP // safe wrap for DBCS.
#define PMORE_USE_ASCII_MOVIE // support ascii movie
//#define PMORE_RESTRICT_ANSI_MOVEMENT // user cannot use ANSI escapes to move
#define PMORE_WORKAROUND_POORTERM // try to work with poor terminal sys
#define PMORE_ACCURATE_WRAPEND // try more harder to find file end in wrap mode
#define PMORE_TRADITIONAL_PROMPTEND // when prompt=NA, show only page 1
#define PMORE_TRADITIONAL_FULLCOL // to work with traditional ascii arts
// -------------------------------------------------------------- </FEATURES>
#include "bbs.h"
#include <unistd.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <ctype.h>
#include <string.h>
// Platform Related. NoSync is faster but if we don't have it...
#ifdef MAP_NOSYNC
#define MF_MMAP_OPTION (MAP_NOSYNC)
#else
#define MF_MMAP_OPTION (MAP_SHARED)
#endif
/* Developer's Guide
*
* OVERVIEW
* - pmore is designed as a line-oriented pager. After you load (mf_attach)
* a file, you can move current display window by lines (mf_forward and
* mf_backward) and then display a page(mf_display).
* And please remember to delete allocated resources (mf_detach)
* when you exit.
* - Functions are designed to work with global variables.
* However you can overcome re-entrance problem by backuping up variables
* or replace all "." to "->" with little modification and add pointer as
* argument passed to each function.
* (This is really tested and it works, however then using global variables
* is considered to be faster and easier to maintain, at lease shorter in
* time to key-in and for filelength).
* - Basically this file should only export one function, "pmore".
* Using any other functions here may be dangerous because they are not
* coded for external reentrance rightnow.
* - mf_* are operation functions to work with file buffer.
* Usually these function assumes "mf" can be accessed.
* - pmore_* are utility functions
*
* DETAILS
* - The most tricky part of pmore is the design of "maxdisps" and "maxlinenoS".
* What do they mean? "The pointer and its line number of last page".
* - Because pmore is designed to work with very large files, it's costly to
* calculate the total line numbers (and not necessary). But if we don't
* know about how many lines left can we display then when navigating by
* pages may result in a page with single line conent (if you set display
* starting pointer to the real last line).
* - To overcome this issue, maxdisps is introduced. It tries to go backward
* one page from end of file (this operation is lighter than visiting
* entire file content for line number calculation). Then we can set this
* as boundary of forward navigation.
* - maxlinenoS is the line number of maxdisps. It's NOT the real number of
* total line in current file (You have to add the last page). That's why
* it has a strange name of trailing "S", to hint you that it's not
* "maxlineno" which is easily considered as "max(total) line number".
*
* HINTS:
* - Remember mmap pointers are NOT null terminated strings.
* You have to use strn* APIs and make sure not exceeding mmap buffer.
* DO NOT USE strcmp, strstr, strchr, ...
* - Scroll handling is painful. If you displayed anything on screen,
* remember to MFDISP_DIRTY();
* - To be portable between most BBS systems, pmore is designed to
* workaround most BBS bugs inside itself.
* - Basically pmore considered the 'outc' output system as unlimited buffer.
* However on most BBS implementation, outc used a buffer with ANSILINELEN
* in length. And for some branches they even used unsigned byte for index.
* So if user complained about output truncated or blanked, increase buffer.
*/
#ifdef DEBUG
int debug = 0;
# define MFPROTO
#else
# define MFPROTO inline static
#endif
/* DBCS users tend to write unsigned char. let's make compiler happy */
#define ustrlen(x) strlen((char*)x)
#define ustrchr(x,y) (unsigned char*)strchr((char*)x, y)
#define ustrrchr(x,y) (unsigned char*)strrchr((char*)x, y)
// --------------------------------------------- <Defines and constants>
// --------------------------- <Display>
/* ANSI COMMAND SYSTEM */
/* On some systems with pmore style ANSI system applied,
* we don't have to define these again.
*/
#ifndef PMORE_STYLE_ANSI
#define PMORE_STYLE_ANSI
// Escapes. I don't like \033 everywhere.
#define ESC_NUM (0x1b)
#define ESC_STR "\x1b"
#define ESC_CHR '\x1b'
// Common ANSI commands.
#define ANSI_RESET ESC_STR "[m"
#define ANSI_COLOR(x) ESC_STR "[" #x "m"
#define ANSI_MOVETO(y,x) ESC_STR "[" #y ";" #x "H"
#define ANSI_CLRTOEND ESC_STR "[K"
#define ANSI_IN_ESCAPE(x) (((x) >= '0' && (x) <= '9') || \
(x) == ';' || (x) == ',' || (x) == '[')
#endif /* PMORE_STYLE_ANSI */
#define ANSI_IN_MOVECMD(x) (strchr("ABCDfjHJRu", x) != NULL)
#define PMORE_DBCS_LEADING(c) (c >= 0x80)
// Poor BBS terminal system Workarounds
// - Most BBS implements clrtoeol() as fake command
// and usually messed up when output ANSI quoted string.
// - A workaround is suggested by kcwu:
// https://opensvn.csie.org/traccgi/pttbbs/trac.cgi/changeset/519
#define FORCE_CLRTOEOL() outs(ANSI_CLRTOEND)
/* Again, if you have a BBS system which optimized out* without recognizing
* ANSI escapes, scrolling with ANSI text may result in melformed text (because
* ANSI escapes were "optimized" ). So here we provide a method to overcome
* with this situation. However your should increase your I/O buffer to prevent
* flickers.
*/
MFPROTO void
pmore_clrtoeol(int y, int x)
{
#ifdef PMORE_WORKAROUND_POORTERM
int i;
move(y, x);
for (i = x; i < t_columns; i++)
outc(' ');
move(y, x);
#else
move(y, x);
clrtoeol();
#endif
}
// --------------------------- </Display>
// --------------------------- <Main Navigation>
typedef struct
{
unsigned char
*start, *end, // file buffer
*disps, *dispe, // displayed content start/end
*maxdisps; // a very special pointer,
// consider as "disps of last page"
off_t len; // file total length
long lineno, // lineno of disps
oldlineno, // last drawn lineno, < 0 means full update
xpos, // starting x position
//
wraplines, // wrapped lines in last display
trunclines, // truncated lines in last display
dispedlines, // how many different lines displayed
// usually dispedlines = PAGE-wraplines,
// but if last line is incomplete(wrapped),
// dispedlines = PAGE-wraplines + 1
lastpagelines,// lines of last page to show
// this indicates how many lines can
// maxdisps(maxlinenoS) display.
maxlinenoS; // lineno of maxdisps, "S"!
// What does the magic "S" mean?
// Just trying to notify you that it's
// NOT REAL MAX LINENO NOR FILELENGTH!!!
// You may consider "S" of "Start" (disps).
} MmappedFile;
MmappedFile mf = {
0, 0, 0, 0, 0, 0L,
0, -1L, 0, 0, -1L, -1L, -1L,-1L
}; // current file
/* mf_* navigation commands return value meanings */
enum {
MFNAV_OK, // navigation ok
MFNAV_EXCEED, // request exceeds buffer
} MF_NAV_COMMANDS;
/* Navigation units (dynamic, so not in enum const) */
#define MFNAV_PAGE (t_lines-2) // when navigation, how many lines in a page to move
/* Display system */
enum {
/* newline method (because of poor BBS implementation) */
MFDISP_NEWLINE_CLEAR = 0, // \n and cleartoeol
MFDISP_NEWLINE_SKIP,
MFDISP_NEWLINE_MOVE, // use move to simulate newline.
MFDISP_WRAP_TRUNCATE = 0,
MFDISP_WRAP_WRAP,
MFDISP_OPT_CLEAR = 0,
MFDISP_OPT_OPTIMIZED,
MFDISP_OPT_FORCEDIRTY,
MFDISP_SEP_NONE = 0x00,
MFDISP_SEP_LINE = 0x01,
MFDISP_SEP_WRAP = 0x02,
MFDISP_SEP_OLD = MFDISP_SEP_LINE | MFDISP_SEP_WRAP,
MFDISP_RAW_NA = 0x00,
MFDISP_RAW_NOANSI,
MFDISP_RAW_PLAIN,
MFDISP_RAW_MODES,
// MFDISP_RAW_NOFMT, // this is rarely used sinde we have ansi and plain
} MF_DISP_CONST;
#define MFDISP_PAGE (t_lines-1) // the real number of lines to be shown.
#define MFDISP_DIRTY() { mf.oldlineno = -1; }
/* Indicators */
#define MFDISP_TRUNC_INDICATOR ANSI_COLOR(0;1;37) ">" ANSI_RESET
#define MFDISP_WRAP_INDICATOR ANSI_COLOR(0;1;37) "\\" ANSI_RESET
#define MFDISP_WNAV_INDICATOR ANSI_COLOR(0;1;37) "<" ANSI_RESET
// --------------------------- </Main Navigation>
// --------------------------- <Aux. Structures>
/* browsing preference */
typedef struct
{
/* mode flags */
unsigned short int
wrapmode, // wrap?
seperator, // seperator style
indicator, // show wrap indicators
oldwrapmode, // traditional wrap
oldstatusbar, // traditional statusbar
rawmode; // show file as-is.
} MF_BrowsingPrefrence;
MF_BrowsingPrefrence bpref =
{ MFDISP_WRAP_WRAP, MFDISP_SEP_OLD, 1,
0, 0, 0, };
/* pretty format header */
#define FH_HEADERS (4) // how many headers do we know?
#define FH_HEADER_LEN (4) // strlen of each heads
static const char *_fh_disp_heads[FH_HEADERS] =
{"�@��", "���D", "�ɶ�", "��H"};
typedef struct
{
int lines; // header lines
unsigned char *headers[FH_HEADERS];
unsigned char *floats[2]; // right floating, name and val
} MF_PrettyFormattedHeader;
MF_PrettyFormattedHeader fh = { 0, {0,0,0,0}, {0, 0}};
/* search records */
typedef struct
{
int len;
int (*cmpfunc) (const char *, const char *, size_t);
unsigned char *search_str; // maybe we can change to dynamic allocation
} MF_SearchRecord;
MF_SearchRecord sr = { 0, strncmp, NULL};
enum {
MFSEARCH_FORWARD,
MFSEARCH_BACKWARD,
} MFSEARCH_DIRECTION;
// Reset structures
#define RESETMF() { memset(&mf, 0, sizeof(mf)); \
mf.lastpagelines = mf.maxlinenoS = mf.oldlineno = -1; }
#define RESETFH() { memset(&fh, 0, sizeof(fh)); \
fh.lines = -1; }
// --------------------------- </Aux. Structures>
// --------------------------------------------- </Defines and constants>
// --------------------------------------------- <Optional Modules>
#ifdef PMORE_USE_ASCII_MOVIE
enum {
MFDISP_MOVIE_UNKNOWN= 0,
MFDISP_MOVIE_DETECTED,
MFDISP_MOVIE_YES,
MFDISP_MOVIE_NO,
MFDISP_MOVIE_PLAYING,
MFDISP_MOVIE_PLAYING_OLD,
} _MFDISP_MOVIE_MODES;
typedef struct {
struct timeval frameclk;
struct timeval synctime;
unsigned char mode,
compat24;
} MF_Movie;
MF_Movie mfmovie;
#define RESET_MOVIE() { mfmovie.mode = MFDISP_MOVIE_UNKNOWN; \
mfmovie.compat24 = 1; \
mfmovie.synctime.tv_sec = mfmovie.synctime.tv_usec = 0; \
mfmovie.frameclk.tv_sec = 1; mfmovie.frameclk.tv_usec = 0; }
MFPROTO unsigned char * mf_movieFrameHeader(unsigned char *p);
int pmore_wait_input(struct timeval *ptv);
int mf_movieNextFrame();
int mf_movieSyncFrame();
void float2tv(float f, struct timeval *ptv);
#define MOVIE_MIN_FRAMECLK (0.1f)
#define MOVIE_SECOND_U (1000000L)
#endif
// --------------------------------------------- </Optional Modules>
// used by mf_attach
void mf_parseHeaders();
void mf_freeHeaders();
void mf_determinemaxdisps(int, int);
/*
* mmap basic operations
*/
int
mf_attach(const char *fn)
{
struct stat st;
int fd = open(fn, O_RDONLY, 0600);
if(fd < 0)
return 0;
if (fstat(fd, &st) || ((mf.len = st.st_size) <= 0) || S_ISDIR(st.st_mode))
{
mf.len = 0;
close(fd);
return 0;
}
/*
mf.len = lseek(fd, 0L, SEEK_END);
lseek(fd, 0, SEEK_SET);
*/
mf.start = mmap(NULL, mf.len, PROT_READ,
MF_MMAP_OPTION, fd, 0);
close(fd);
if(mf.start == MAP_FAILED)
{
RESETMF();
return 0;
}
mf.end = mf.start + mf.len;
mf.disps = mf.dispe = mf.start;
mf.lineno = 0;
mf_determinemaxdisps(MFNAV_PAGE, 0);
mf.disps = mf.dispe = mf.start;
mf.lineno = 0;
/* reset and parse article header */
mf_parseHeaders();
/* a workaround for wrapped seperators */
if(mf.maxlinenoS > 0 &&
fh.lines >= mf.maxlinenoS &&
bpref.seperator & MFDISP_SEP_WRAP)
{
mf_determinemaxdisps(+1, 1);
}
return 1;
}
void
mf_detach()
{
if(mf.start) {
munmap(mf.start, mf.len);
RESETMF();
}
mf_freeHeaders();
}
/*
* lineno calculation, and moving
*/
void
mf_sync_lineno()
{
unsigned char *p;
if(mf.disps == mf.maxdisps && mf.maxlinenoS >= 0)
{
mf.lineno = mf.maxlinenoS;
} else {
mf.lineno = 0;
for (p = mf.start; p < mf.disps; p++)
if(*p == '\n')
mf.lineno ++;
if(mf.disps == mf.maxdisps && mf.maxlinenoS < 0)
mf.maxlinenoS = mf.lineno;
}
}
MFPROTO int mf_backward(int); // used by mf_buildmaxdisps
MFPROTO int mf_forward(int); // used by mf_buildmaxdisps
void
mf_determinemaxdisps(int backlines, int update_by_offset)
{
unsigned char *pbak = mf.disps, *mbak = mf.maxdisps;
long lbak = mf.lineno;
if(update_by_offset)
{
if(backlines > 0)
{
/* tricky way because usually
* mf_forward checks maxdisps.
*/
mf.disps = mf.maxdisps;
mf.maxdisps = mf.end-1;
mf_forward(backlines);
mf_backward(0);
} else
mf_backward(backlines);
} else {
mf.lineno = backlines;
mf.disps = mf.end - 1;
backlines = mf_backward(backlines);
}
if(mf.disps != mbak)
{
mf.maxdisps = mf.disps;
if(update_by_offset)
mf.lastpagelines -= backlines;
else
mf.lastpagelines = backlines;
mf.maxlinenoS = -1;
#ifdef PMORE_PRELOAD_SIZE
if(mf.len <= PMORE_PRELOAD_SIZE)
mf_sync_lineno(); // maxlinenoS will be automatically updated
#endif
}
mf.disps = pbak;
mf.lineno = lbak;
}
/*
* mf_backwards is also used for maxno determination,
* so we cannot change anything in mf except these:
* mf.disps
* mf.lineno
*/
MFPROTO int
mf_backward(int lines)
{
int real_moved = 0;
/* backward n lines means to find n times of '\n'. */
/* if we're already in a line break, add one mark. */
if (mf.disps < mf.end && *mf.disps == '\n')
lines++, real_moved --;
while (1)
{
if (mf.disps < mf.start || *mf.disps == '\n')
{
real_moved ++;
if(lines-- <= 0 || mf.disps < mf.start)
break;
}
mf.disps --;
}
/* now disps points to previous 1 byte of new address */
mf.disps ++;
real_moved --;
mf.lineno -= real_moved;
return real_moved;
}
MFPROTO int
mf_forward(int lines)
{
int real_moved = 0;
while(mf.disps <= mf.maxdisps && lines > 0)
{
while (mf.disps <= mf.maxdisps && *mf.disps++ != '\n');
if(mf.disps <= mf.maxdisps)
mf.lineno++, lines--, real_moved++;
}
if(mf.disps > mf.maxdisps)
mf.disps = mf.maxdisps;
/* please make sure you have lineno synced. */
if(mf.disps == mf.maxdisps && mf.maxlinenoS < 0)
mf.maxlinenoS = mf.lineno;
return real_moved;
/*
if(lines > 0)
return MFNAV_OK;
else
return MFNAV_EXCEED;
*/
}
int
mf_goTop()
{
if(mf.disps == mf.start && mf.xpos > 0)
mf.xpos = 0;
mf.disps = mf.start;
mf.lineno = 0;
return MFNAV_OK;
}
int
mf_goBottom()
{
mf.disps = mf.maxdisps;
mf_sync_lineno();
return MFNAV_OK;
}
MFPROTO int
mf_goto(int lineno)
{
mf.disps = mf.start;
mf.lineno = 0;
return mf_forward(lineno);
}
MFPROTO int
mf_viewedNone()
{
return (mf.disps <= mf.start);
}
MFPROTO int
mf_viewedAll()
{
return (mf.dispe >= mf.end);
}
/*
* search!
*/
int
mf_search(int direction)
{
unsigned char *s = sr.search_str;
int l = sr.len;
int flFound = 0;
if(!s || !*s)
return 0;
if(direction == MFSEARCH_FORWARD)
{
mf_forward(1);
while(mf.disps < mf.end - l)
{
if(sr.cmpfunc((char*)mf.disps, (char*)s, l) == 0)
{
flFound = 1;
break;
} else {
/* DBCS check here. */
if(PMORE_DBCS_LEADING(*mf.disps++))
mf.disps++;
}
}
mf_backward(0);
if(mf.disps > mf.maxdisps)
mf.disps = mf.maxdisps;
mf_sync_lineno();
}
else if(direction == MFSEARCH_BACKWARD)
{
mf_backward(1);
while (!flFound && mf.disps > mf.start)
{
while(!flFound && mf.disps < mf.end-l && *mf.disps != '\n')
{
if(sr.cmpfunc((char*)mf.disps, (char*)s, l) == 0)
{
flFound = 1;
} else
{
/* DBCS check here. */
if(PMORE_DBCS_LEADING(*mf.disps++))
mf.disps++;
}
}
if(!flFound)
mf_backward(1);
}
mf_backward(0);
if(mf.disps < mf.start)
mf.disps = mf.start;
mf_sync_lineno();
}
if(flFound)
MFDISP_DIRTY();
return flFound;
}
/* String Processing
*
* maybe you already have your string processors (or not).
* whether yes or no, here we provides some.
*/
#define ISSPACE(x) (x <= ' ')
MFPROTO void
pmore_str_strip_ansi(unsigned char *p) // warning: p is NULL terminated
{
unsigned char *pb = p;
while (*p != 0)
{
if (*p == ESC_CHR)
{
// ansi code sequence, ignore them.
pb = p++;
while (ANSI_IN_ESCAPE(*p))
p++;
memmove(pb, p, ustrlen(p)+1);
p = pb;
}
else if (*p < ' ' || *p == 0xff)
{
// control codes, ignore them.
// what is 0xff? old BBS does not handle telnet protocol
// so IACs were inserted.
memmove(p, p+1, ustrlen(p+1)+1);
}
else
p++;
}
}
/* this chomp is a little different:
* it kills starting and trailing spaces.
*/
MFPROTO void
pmore_str_chomp(unsigned char *p)
{
unsigned char *pb = p + ustrlen(p)-1;
while (pb >= p)
if(ISSPACE(*pb))
*pb-- = 0;
else
break;
pb = p;
while (*pb && ISSPACE(*pb))
pb++;
if(pb != p)
memmove(p, pb, ustrlen(pb)+1);
}
#if 0
int
pmore_str_safe_big5len(unsigned char *p)
{
return 0;
}
#endif
/*
* Format Related
*/
void
mf_freeHeaders()
{
if(fh.lines > 0)
{
int i;
for (i = 0; i < FH_HEADERS; i++)
if(fh.headers[i])
free(fh.headers[i]);
for (i = 0; i < sizeof(fh.floats) / sizeof(unsigned char*); i++)
free(fh.floats[i]);
RESETFH();
}
}
void
mf_parseHeaders()
{
/* file format:
* AUTHOR: author BOARD: blah <- headers[0], flaots[0], floats[1]
* XXX: xxx <- headers[1]
* XXX: xxx <- headers[n]
* [blank, fill with seperator] <- lines
*
* #define STR_AUTHOR1 "�@��:"
* #define STR_AUTHOR2 "�o�H�H:"
*/
unsigned char *pmf = mf.start;
int i = 0;
RESETFH();
if(mf.len < LEN_AUTHOR2)
return;
if (strncmp((char*)mf.start, STR_AUTHOR1, LEN_AUTHOR1) == 0)
{
fh.lines = 3; // local
}
else if (strncmp((char*)mf.start, STR_AUTHOR2, LEN_AUTHOR2) == 0)
{
fh.lines = 4;
}
else
return;
for (i = 0; i < fh.lines; i++)
{
unsigned char *p = pmf, *pb = pmf;
int l;
/* first, go to line-end */
while(pmf < mf.end && *pmf != '\n')
pmf++;
if(pmf >= mf.end)
break;
p = pmf;
pmf ++; // move to next line.
// p is pointing at a new line. (\n)
l = (int)(p - pb);
p = (unsigned char*) malloc (l+1);
fh.headers[i] = p;
memcpy(p, pb, l);
p[l] = 0;
// now, postprocess p.
pmore_str_strip_ansi(p);
// strip to quotes[+1 space]
if((pb = ustrchr((char*)p, ':')) != NULL)
{
if(*(pb+1) == ' ') pb++;
memmove(p, pb, ustrlen(pb)+1);
}
// kill staring and trailing spaces
pmore_str_chomp(p);
// special case, floats are in line[0].
if(i == 0 && (pb = ustrrchr(p, ':')) != NULL && *(pb+1))
{
unsigned char *np = (unsigned char*)strdup((char*)(pb+1));
fh.floats[1] = np;
pmore_str_chomp(np);
// remove quote and traverse back
*pb-- = 0;
while (pb > p && *pb != ',' && !(ISSPACE(*pb)))
pb--;
if (pb > p) {
fh.floats[0] = (unsigned char*)strdup((char*)(pb+1));
pmore_str_chomp(fh.floats[0]);
*pb = 0;
pmore_str_chomp(fh.headers[0]);
} else {
fh.floats[0] = (unsigned char*)strdup("");
}
}
}
}
/*
* mf_display utility macros
*/
MFPROTO void
MFDISP_SKIPCURLINE()
{
while (mf.dispe < mf.end && *mf.dispe != '\n')
mf.dispe++;
}
MFPROTO int
MFDISP_PREDICT_LINEWIDTH(unsigned char *p)
{
/* predict from p to line-end, without ANSI seq.
*/
int off = 0;
int inAnsi = 0;
while (p < mf.end && *p != '\n')
{
if(inAnsi)
{
if(!ANSI_IN_ESCAPE(*p))
inAnsi = 0;
} else {
if(*p == ESC_CHR)
inAnsi = 1;
else
off ++;
}
p++;
}
return off;
}
MFPROTO int
MFDISP_DBCS_HEADERWIDTH(int originalw)
{
return originalw - (originalw %2);
// return (originalw >> 1) << 1;
}
#define MFDISP_FORCEUPDATE2TOP() { startline = 0; }
#define MFDISP_FORCEUPDATE2BOT() { endline = MFDISP_PAGE - 1; }
#define MFDISP_FORCEDIRTY2BOT() \
if(optimized == MFDISP_OPT_OPTIMIZED) { \
optimized = MFDISP_OPT_FORCEDIRTY; \
MFDISP_FORCEUPDATE2BOT(); \
}
static char *override_msg = NULL;
static char *override_attr = NULL;
/*
* display mf content from disps for MFDISP_PAGE
*/
void
mf_display()
{
int lines = 0, col = 0, currline = 0, wrapping = 0;
int startline, endline;
int optimized = MFDISP_OPT_CLEAR;
/* why t_columns-1 here?
* because BBS systems usually have a poor terminal system
* and many stupid clients behave differently.
* So we try to avoid using the last column, leave it for
* BBS to place '\n' and CLRTOEOL.
*/
const int headerw = MFDISP_DBCS_HEADERWIDTH(t_columns-1);
const int dispw = headerw - (t_columns - headerw < 2);
const int maxcol = dispw - 1;
int newline_default = MFDISP_NEWLINE_CLEAR;
if(mf.wraplines || mf.trunclines)
MFDISP_DIRTY(); // we can't scroll with wrapped lines.
mf.wraplines = 0;
mf.trunclines = 0;
mf.dispedlines = 0;
MFDISP_FORCEUPDATE2TOP();
MFDISP_FORCEUPDATE2BOT();
#ifdef PMORE_USE_OPT_SCROLL
/* process scrolling */
if (mf.oldlineno >= 0 && mf.oldlineno != mf.lineno)
{
int scrll = mf.lineno - mf.oldlineno, i;
int reverse = (scrll > 0 ? 0 : 1);
if(reverse)
scrll = -scrll;
else
{
/* because bottom status line is also scrolled,
* we have to erase it here.
*/
pmore_clrtoeol(b_lines, 0);
// move(b_lines, 0);
// clrtoeol();
}
if(scrll > MFDISP_PAGE)
scrll = MFDISP_PAGE;
i = scrll;
while(i-- > 0)
if (reverse)
rscroll(); // v
else
scroll(); // ^
if(reverse)
{
endline = scrll-1; // v
// clear the line which will be scrolled
// to bottom (status line position).
pmore_clrtoeol(b_lines, 0);
// move(b_lines, 0);
// clrtoeol();
}
else
{
startline = MFDISP_PAGE - scrll; // ^
}
move(startline, 0);
optimized = MFDISP_OPT_OPTIMIZED;
// return; // uncomment if you want to observe scrolling
}
else
#endif
clear(), move(0, 0);
mf.dispe = mf.disps;
while (lines < MFDISP_PAGE)
{
int inAnsi = 0;
int newline = newline_default;
int predicted_linewidth = -1;
int xprefix = mf.xpos;
#ifdef PMORE_USE_DBCS_WRAP
unsigned char *dbcs_incomplete = NULL;
#endif
currline = mf.lineno + lines;
col = 0;
if(!wrapping && mf.dispe < mf.end)
mf.dispedlines++;
if(optimized == MFDISP_OPT_FORCEDIRTY)
{
/* btw, apparently this line should be visible.
* if not, maybe something wrong.
*/
pmore_clrtoeol(lines, 0);
}
#ifdef PMORE_USE_ASCII_MOVIE
if(mfmovie.mode == MFDISP_MOVIE_PLAYING_OLD &&
mfmovie.compat24)
{
if(mf.dispedlines == 23)
return;
}
else
if(mfmovie.mode == MFDISP_MOVIE_UNKNOWN ||
mfmovie.mode == MFDISP_MOVIE_PLAYING)
{
if(mf_movieFrameHeader(mf.dispe))
switch(mfmovie.mode)
{
case MFDISP_MOVIE_UNKNOWN:
mfmovie.mode = MFDISP_MOVIE_DETECTED;
/* let's remove the first control sequence. */
MFDISP_SKIPCURLINE();
break;
case MFDISP_MOVIE_PLAYING:
/*
* maybe we should do clrtobot() here,
* but it's even better if we do clear()
* all time. so we set dirty here for
* next frame, and please set dirty before
* playing.
*/
MFDISP_DIRTY();
return;
}
}
#endif
/* Is currentline visible? */
if (lines < startline || lines > endline)
{
MFDISP_SKIPCURLINE();
newline = MFDISP_NEWLINE_SKIP;
}
/* Now, consider what kind of line
* (header, seperator, or normal text)
* is current line.
*/
else if (currline == fh.lines && bpref.rawmode == MFDISP_RAW_NA)
{
/* case 1, header seperator line */
if (bpref.seperator & MFDISP_SEP_LINE)
{
outs(ANSI_COLOR(36));
for(col = 0; col < headerw; col+=2)
{
// prints("%02d", col);
outs("�w");
}
outs(ANSI_RESET);
}
/* Traditional 'more' adds seperator as a newline.
* This is buggy, however we can support this
* by using wrapping features.
* Anyway I(piaip) don't like this. And using wrap
* leads to slow display (we cannt speed it up with
* optimized scrolling.
*/
if(bpref.seperator & MFDISP_SEP_WRAP)
{
/* we have to do all wrapping stuff
* in normal text section.
* make sure this is updated.
*/
wrapping = 1;
mf.wraplines ++;
MFDISP_FORCEDIRTY2BOT();
if(mf.dispe > mf.start &&
mf.dispe < mf.end &&
*mf.dispe == '\n')
mf.dispe --;
}
else
MFDISP_SKIPCURLINE();
}
else if (currline < fh.lines && bpref.rawmode == MFDISP_RAW_NA )
{
/* case 2, we're printing headers */
const char *val = (const char*)fh.headers[currline];
const char *name = _fh_disp_heads[currline];
int w = headerw - FH_HEADER_LEN - 3;
outs(ANSI_COLOR(47;34) " ");
outs(name);
outs(" " ANSI_COLOR(44;37) " ");
/* right floating stuff? */
if (currline == 0 && fh.floats[0])
{
w -= ustrlen(fh.floats[0]) + ustrlen(fh.floats[1]) + 4;
}
prints("%-*.*s", w, w,
(val ? val : ""));
if (currline == 0 && fh.floats[0])
{
outs(ANSI_COLOR(47;34) " ");
outs((const char*)fh.floats[0]);
outs(" " ANSI_COLOR(44;37) " ");
outs((const char*)fh.floats[1]);
outs(" ");
}
outs(ANSI_RESET);
MFDISP_SKIPCURLINE();
}
else if(mf.dispe < mf.end)
{
/* case 3, normal text */
long dist = mf.end - mf.dispe;
long flResetColor = 0;
int srlen = -1;
int breaknow = 0;
unsigned char c;
if(xprefix > 0 && !bpref.oldwrapmode && bpref.indicator)
{
outs(MFDISP_WNAV_INDICATOR);
col++;
}
// first check quote
if(bpref.rawmode == MFDISP_RAW_NA)
{
if(dist > 1 &&
(*mf.dispe == ':' || *mf.dispe == '>') &&
*(mf.dispe+1) == ' ')
{
outs(ANSI_COLOR(36));
flResetColor = 1;
} else if (dist > 2 &&
(!strncmp((char*)mf.dispe, "��", 2) ||
!strncmp((char*)mf.dispe, "==>", 3)))
{
outs(ANSI_COLOR(32));
flResetColor = 1;
}
}
while(!breaknow && mf.dispe < mf.end && (c = *mf.dispe) != '\n')
{
if(inAnsi)
{
if (!ANSI_IN_ESCAPE(c))
inAnsi = 0;
/* whatever this is, output! */
mf.dispe ++;
switch(bpref.rawmode)
{
case MFDISP_RAW_NOANSI:
/* TODO
* col++ here may be buggy. */
if(col < t_columns)
{
/* we tried our best to determine */
if(xprefix > 0)
xprefix --;
else
{
outc(c);
col++;
}
}
if(!inAnsi)
outs(ANSI_RESET);
break;
case MFDISP_RAW_PLAIN:
break;
default:
if(ANSI_IN_MOVECMD(c))
#ifdef PMORE_RESTRICT_ANSI_MOVEMENT
c = 's'; // "save cursor pos"
#else
// some user cannot live without this.
// make them happy.
newline_default = newline = MFDISP_NEWLINE_MOVE;
#endif
outc(c);
break;
}
continue;
} else {
if(c == ESC_CHR)
{
inAnsi = 1;
/* we can't output now because maybe
* ptt_prints wants to do something.
*/
}
else if(sr.search_str && srlen < 0 && // support search
#ifdef PMORE_USE_DBCS_WRAP
dbcs_incomplete == NULL &&
#endif
mf.end - mf.dispe > sr.len &&
sr.cmpfunc((char*)mf.dispe, (char*)sr.search_str, sr.len) == 0)
{
outs(ANSI_COLOR(7));
srlen = sr.len-1;
flResetColor = 1;
}
#ifdef PMORE_USE_PTT_PRINTS
/* special case to resolve dirty Ptt_prints */
if(inAnsi &&
mf.end - mf.dispe > 2 &&
*(mf.dispe+1) == '*')
{
int i;
char buf[64]; // make sure ptt_prints will not exceed
memset(buf, 0, sizeof(buf));
strncpy(buf, (char*)mf.dispe, 3); // ^[[*s
mf.dispe += 2;
if(bpref.rawmode)
buf[0] = '*';
else
{
if(strchr("sbmlpn", buf[2]) != NULL)
{
override_attr = ANSI_COLOR(1;37;41);
override_msg = " �`�N: ����������X,"
"�줺�e�ä��@�w���z�u��ӤH��T";
}
Ptt_prints(buf, NO_RELOAD); // result in buf
}
i = strlen(buf);
if (col + i > maxcol)
i = maxcol - col;
if(i > 0)
{
buf[i] = 0;
col += i;
outs(buf);
}
inAnsi = 0;
} else
#endif
if(inAnsi)
{
switch(bpref.rawmode)
{
case MFDISP_RAW_NOANSI:
/* TODO
* col++ here may be buggy. */
if(col < t_columns)
{
/* we tried our best to determine */
if(xprefix > 0)
xprefix --;
else
{
outs(ANSI_COLOR(1) "*");
col++;
}
}
break;
case MFDISP_RAW_PLAIN:
break;
default:
outc(ESC_CHR);
break;
}
} else {
int canOutput = 0;
/* if col > maxcol,
* because we have the space for
* "indicators" (one byte),
* so we can tolerate one more byte.
*/
if(col <= maxcol) // normal case
canOutput = 1;
else if (bpref.oldwrapmode && // oldwrapmode
col < t_columns)
{
canOutput = 1;
newline = MFDISP_NEWLINE_MOVE;
} else {
int off = 0;
// put more efforts to determine
// if we can use indicator space
// determine real offset between \n
if(predicted_linewidth < 0)
predicted_linewidth = col + 1 +
MFDISP_PREDICT_LINEWIDTH(mf.dispe+1);
off = predicted_linewidth - (col + 1);
if (col + off <= (maxcol+1))
{
canOutput = 1; // indicator space
}
#ifdef PMORE_TRADITIONAL_FULLCOL
else if (col + off < t_columns)
{
canOutput = 1;
newline = MFDISP_NEWLINE_MOVE;
}
#endif
}
if(canOutput)
{
/* the real place to output text
*/
#ifdef PMORE_USE_DBCS_WRAP
if(mf.xpos > 0 && dbcs_incomplete && col < 2)
{
/* col = 0 or 1 only */
if(col == 0) /* no indicators */
c = ' ';
else if(!bpref.oldwrapmode && bpref.indicator)
c = ' ';
}
if (dbcs_incomplete)
dbcs_incomplete = NULL;
else if(PMORE_DBCS_LEADING(c))
dbcs_incomplete = mf.dispe;
#endif
if(xprefix > 0)
xprefix --;
else
{
outc(c);
col++;
}
if (srlen == 0)
outs(ANSI_RESET);
if(srlen >= 0)
srlen --;
}
else
/* wrap modes */
if(mf.xpos > 0 || bpref.wrapmode == MFDISP_WRAP_TRUNCATE)
{
breaknow = 1;
mf.trunclines ++;
MFDISP_SKIPCURLINE();
wrapping = 0;
}
else if (bpref.wrapmode == MFDISP_WRAP_WRAP)
{
breaknow = 1;
wrapping = 1;
mf.wraplines ++;
#ifdef PMORE_USE_DBCS_WRAP
if(dbcs_incomplete)
{
mf.dispe = dbcs_incomplete;
dbcs_incomplete = NULL;
/* to be more dbcs safe,
* use the followings to
* erase printed character.
*/
if(col > 0) {
/* TODO BUG BUGGY
* using move is maybe actually non-sense
* because BBS terminal system cannot
* display this when ANSI escapes were used
* in same line. However, on most
* situation this works.
* So we used an alternative, forced ANSI
* move command.
*/
// move(lines, col-1);
char ansicmd[16];
sprintf(ansicmd, ANSI_MOVETO(%d,%d),
lines+1, col-1+1);
/* to preven ANSI ESCAPE being tranlated as
* DBCS trailing byte. */
outc(' ');
/* move back one column */
outs(ansicmd);
/* erase it (previous leading byte)*/
outc(' ');
/* go to correct position */
outs(ansicmd);
}
}
#endif
}
}
}
if(!breaknow)
mf.dispe ++;
}
if(flResetColor)
outs(ANSI_RESET);
/* "wrapping" should be only in normal text section.
* We don't support wrap within scrolling,
* so if we have to wrap, invalidate all lines.
*/
if(breaknow)
{
if(wrapping)
MFDISP_FORCEDIRTY2BOT();
if(!bpref.oldwrapmode && bpref.indicator && col < t_columns)
{
if(wrapping)
outs(MFDISP_WRAP_INDICATOR);
else
outs(MFDISP_TRUNC_INDICATOR);
} else {
outs(ANSI_RESET);
}
}
else
wrapping = 0;
}
if(mf.dispe < mf.end && *mf.dispe == '\n')
mf.dispe ++;
// else, we're in wrap mode.
switch(newline)
{
case MFDISP_NEWLINE_SKIP:
break;
case MFDISP_NEWLINE_CLEAR:
FORCE_CLRTOEOL();
outc('\n');
break;
case MFDISP_NEWLINE_MOVE:
move(lines+1, 0);
break;
}
lines ++;
}
/*
* we've displayed the file.
* but if we got wrapped lines in last page,
* mf.maxdisps may be required to be larger.
*/
if(mf.disps == mf.maxdisps && mf.dispe < mf.end)
{
/*
* never mind if that's caused by seperator
* however this code is rarely used now.
* only if no preload file.
*/
if (bpref.seperator & MFDISP_SEP_WRAP &&
mf.wraplines == 1 &&
mf.lineno < fh.lines)
{
/*
* o.k, now we know maxline should be one line forward.
*/
mf_determinemaxdisps(+1, 1);
} else
{
/* not caused by seperator?
* ok, then it's by wrapped lines.
*
* old flavor: go bottom:
* mf_determinemaxdisps(0)
* however we have "update" method now,
* so we can achieve more user friendly behavior.
*/
mf_determinemaxdisps(+mf.wraplines, 1);
}
}
mf.oldlineno = mf.lineno;
}
/* --------------------- MAIN PROCEDURE ------------------------- */
static const char * const pmore_help[] = {
"\0�\\Ū�峹�\\����ϥλ���",
"\01��в��ʥ\\����",
"(k/��) (j/��/Enter) �W��/�U���@��",
"(^B)(PgUp)(BackSpace) �W���@��",
"(^F)(PgDn)(Space)(��) �U���@��",
"(,/</S-TAB)(./>/TAB) ��/�k����",
"(0/g/Home) ($/G/End) �ɮ}�Y/����",
"(;/:) ���ܬY��/�Y��",
"�Ʀr�� 1-9 ���ܿ�J�����ƩΦ渹",
"\01��L�\\����",
"(/" ANSI_COLOR(1;30) "/" ANSI_RESET
"s) �j�M�r��",
"(n/N) ���ƥ�/�ϦV�j�M",
"(Ctrl-T) �s�J�Ȧs��",
"(f/b) ���ܤU/�W�g",
"(a/A) ���ܦP�@�@�̤U/�W�g",
"(t/[-/]+) �D�D���\\Ū:�`��/�e/��g",
"(\\/|) ������ܭ�l���e", // this IS already aligned!
"(w/W/l) �����۰��_��/�_��Ÿ�/���j�u��ܤ覡",
"(p/o) ����ʵe/�����DzμҦ�(���A�C�P�_��覡)",
"(q/��) (h/H/?/F1) ����/�������e��",
#ifdef DEBUG
"(d) ��������(debug)�Ҧ�",
#endif
/* You don't have to delete this copyright line.
* It will be located in bottom of screen and overrided by
* status line. Only user with big terminals will see this :)
*/
"\01���t�Ψϥ� piaip ���s���s���{��: pmore, piaip's more",
NULL
};
/*
* pmore utility macros
*/
MFPROTO void
PMORE_UINAV_FORWARDPAGE()
{
/* Usually, a forward is just mf_forward(MFNAV_PAGE);
* but because of wrapped lines...
* This function is used when user tries to nagivate
* with page request.
* If you want to a real page forward, don't use this.
* That's why we have this special function.
*/
int i = mf.dispedlines - 1;
if(mf_viewedAll())
return;
if(i < 1)
i = 1;
mf_forward(i);
}
MFPROTO void
PMORE_UINAV_FORWARDLINE()
{
if(mf_viewedAll())
return;
mf_forward(1);
}
#define REENTRANT_RESTORE() { mf = bkmf; fh = bkfh; }
/*
* piaip's more, a replacement for old more
*/
int
pmore(char *fpath, int promptend)
{
int flExit = 0, retval = 0;
int ch = 0;
int invalidate = 1;
/* simple re-entrant hack
* I don't want to write pointers everywhere,
* and pmore should be simple enough (inside itself)
* so we can do so.
*/
MmappedFile bkmf;
MF_PrettyFormattedHeader bkfh;
#ifdef PMORE_USE_ASCII_MOVIE
RESET_MOVIE();
#endif
bkmf = mf; /* simple re-entrant hack */
bkfh = fh;
RESETMF();
RESETFH();
override_msg = NULL; /* elimiate pending errors */
STATINC(STAT_MORE);
if(!mf_attach(fpath))
{
REENTRANT_RESTORE();
return -1;
}
clear();
while(!flExit)
{
if(invalidate)
{
mf_display();
invalidate = 0;
}
/* in current implementation,
* we want to invalidate for each keypress.
*/
invalidate = 1;
#ifdef PMORE_TRADITIONAL_PROMPTEND
if(promptend == NA)
{
#ifdef PMORE_USE_ASCII_MOVIE
if(mfmovie.mode == MFDISP_MOVIE_DETECTED)
{
/* quick auto play */
mfmovie.mode = MFDISP_MOVIE_YES;
RESET_MOVIE();
mfmovie.mode = MFDISP_MOVIE_PLAYING;
mf_determinemaxdisps(0, 0); // display until last line
mf_movieNextFrame();
MFDISP_DIRTY();
continue;
} else if (mfmovie.mode != MFDISP_MOVIE_PLAYING)
#endif
break;
}
#else
if(promptend == NA && mf_viewedAll())
break;
#endif
move(b_lines, 0);
// clrtoeol(); // this shall be done in mf_display to speed up.
#ifdef PMORE_USE_ASCII_MOVIE
switch (mfmovie.mode)
{
case MFDISP_MOVIE_UNKNOWN:
mfmovie.mode = MFDISP_MOVIE_NO;
break;
case MFDISP_MOVIE_DETECTED:
mfmovie.mode = MFDISP_MOVIE_YES;
{
// query if user wants to play movie.
int w = t_columns-1;
const char *s =
" �o�����O�i����r�ʵe�A�n�}�l����ܡH [Y/n]";
outs(ANSI_RESET ANSI_COLOR(1;33;44));
w -= strlen(s); outs(s);
while(w-- > 0) outc(' '); outs(ANSI_RESET);
w = tolower(igetch());
if(w != 'n' &&
w != KEY_UP && w != KEY_LEFT &&
w != 'q')
{
RESET_MOVIE();
mfmovie.mode = MFDISP_MOVIE_PLAYING;
mf_determinemaxdisps(0, 0); // display until last line
mf_movieNextFrame();
MFDISP_DIRTY();
continue;
}
/* else, we have to clean up. */
move(b_lines, 0);
clrtoeol();
}
break;
case MFDISP_MOVIE_PLAYING_OLD:
case MFDISP_MOVIE_PLAYING:
{
int w = t_columns - 1;
const char *s = " >>> ����ʵe��... �i�����N�䰱��";
outs(ANSI_RESET ANSI_COLOR(1;30;47));
w -= strlen(s); outs(s);
while(w-- > 0) outc(' '); outs(ANSI_RESET);
}
if(mf_movieSyncFrame())
{
/* user did not hit anything.
* play next frame.
*/
if(mfmovie.mode == MFDISP_MOVIE_PLAYING)
{
if(!mf_movieNextFrame())
{
mfmovie.mode = MFDISP_MOVIE_YES; // nothing more
mf_determinemaxdisps(MFNAV_PAGE, 0);
mf_forward(0);
if(promptend == NA)
{
/* if we played to end,
* no need to prevent pressanykey().
*/
flExit = 1, retval = 0;
}
}
}
else if(mfmovie.mode == MFDISP_MOVIE_PLAYING_OLD)
{
if(mf_viewedAll())
{
mfmovie.mode = MFDISP_MOVIE_NO;
mf_determinemaxdisps(MFNAV_PAGE, 0);
mf_forward(0);
}
else
{
if(!mfmovie.compat24)
PMORE_UINAV_FORWARDPAGE();
else
mf_forward(22);
}
}
} else {
igetch();
/* TODO simple navigation here? */
/* stop playing */
if(mfmovie.mode == MFDISP_MOVIE_PLAYING)
{
mfmovie.mode = MFDISP_MOVIE_YES;
if(promptend == NA)
{
flExit = 1, retval = READ_NEXT;
}
}
else if(mfmovie.mode == MFDISP_MOVIE_PLAYING_OLD)
mfmovie.mode = MFDISP_MOVIE_NO;
mf_determinemaxdisps(MFNAV_PAGE, 0);
mf_forward(0);
}
continue;
}
#endif
/* PRINT BOTTOM STATUS BAR */
#ifdef DEBUG
if(debug)
{
/* in debug mode don't print ANSI codes
* because themselves are buggy.
*/
prints("L#%ld(w%ld,lp%ld) pmt=%d Dsp:%08X/%08X/%08X, "
"F:%08X/%08X(%d) tScr(%dx%d)",
mf.lineno, mf.wraplines, mf.lastpagelines,
promptend,
(unsigned int)mf.disps,
(unsigned int)mf.maxdisps,
(unsigned int)mf.dispe,
(unsigned int)mf.start, (unsigned int)mf.end,
(int)mf.len,
t_columns,
t_lines
);
}
else
#endif
{
char *printcolor;
char buf[256]; // orz
int prefixlen = 0;
int barlen = 0;
int postfix1len = 0, postfix2len = 0;
int progress =
(int)((unsigned long)(mf.dispe-mf.start) * 100 / mf.len);
/*
* page determination is hard.
* should we use starting line, or finishing line?
*/
int nowpage =
(int)((mf.lineno + mf.dispedlines/2) / MFNAV_PAGE)+1;
int allpages = -1; /* unknown yet */
if (mf.maxlinenoS >= 0)
{
allpages =
(int)((mf.maxlinenoS + mf.lastpagelines -
((bpref.seperator & MFDISP_SEP_WRAP) &&
(fh.lines >= 0) ? 0:1)) / MFNAV_PAGE)+1;
if (mf.lineno >= mf.maxlinenoS || nowpage > allpages)
nowpage = allpages;
/*
nowpage =
(int)((mf.lineno + mf.dispedlines-2) / MFNAV_PAGE)+1 ;
*/
}
/* why -2 and -1?
* because we want to determine by nav_page,
* and mf.dispedlines is based on disp_page (nav_page+1)
* mf.lastpagelines is based on nav_page
*/
if(mf_viewedAll())
printcolor = ANSI_COLOR(37;44);
else if (mf_viewedNone())
printcolor = ANSI_COLOR(33;45);
else
printcolor = ANSI_COLOR(34;46);
outs(ANSI_RESET);
outs(printcolor);
if(bpref.oldstatusbar)
{
prints(" �s�� P.%d(%d%%) %s %-30.30s%s",
nowpage,
progress,
ANSI_COLOR(31;47),
"(h)"
ANSI_COLOR(30) "�D�U "
ANSI_COLOR(31) "����[PgUp][",
"PgDn][Home][End]"
ANSI_COLOR(30) "���� "
ANSI_COLOR(31) "��[q]"
ANSI_COLOR(30) "���� ");
} else {
if(allpages >= 0)
sprintf(buf,
" �s�� �� %1d/%1d �� (%3d%%) ",
nowpage,
allpages,
progress
);
else
sprintf(buf,
" �s�� �� %1d �� (%3d%%) ",
nowpage,
progress
);
outs(buf); prefixlen += strlen(buf);
outs(ANSI_COLOR(1;30;47));
if(override_msg)
{
buf[0] = 0;
if(override_attr) outs(override_attr);
snprintf(buf, sizeof(buf), override_msg);
override_msg = NULL;
}
else
if(mf.xpos > 0)
{
snprintf(buf, sizeof(buf),
" ��ܽd��: %d~%d ���, %02d~%02d ��",
(int)mf.xpos+1,
(int)(mf.xpos + t_columns-(mf.trunclines ? 2 : 1)),
(int)(mf.lineno + 1),
(int)(mf.lineno + mf.dispedlines)
);
} else {
snprintf(buf, sizeof(buf),
" �ثe���: �� %02d~%02d ��",
(int)(mf.lineno + 1),
(int)(mf.lineno + mf.dispedlines)
);
}
outs(buf); prefixlen += strlen(buf);
postfix1len = 12; // check msg below
postfix2len = 10;
if(mf_viewedAll()) postfix1len = 15;
if (prefixlen + postfix1len + postfix2len + 1 > t_columns)
{
postfix1len = 0;
if (prefixlen + postfix1len + postfix2len + 1 > t_columns)
postfix2len = 0;
}
barlen = t_columns - 1 - postfix1len - postfix2len - prefixlen;
while(barlen-- > 0)
outc(' ');
if(postfix1len > 0)
outs(
mf_viewedAll() ?
ANSI_COLOR(0;31;47)"(y)" ANSI_COLOR(30) "�^�H"
ANSI_COLOR(31) "(X)" ANSI_COLOR(30) "���� "
:
ANSI_COLOR(0;31;47) "(h)"
ANSI_COLOR(30) "���仡�� "
);
if(postfix2len > 0)
outs(
ANSI_COLOR(0;31;47) "��[q]"
ANSI_COLOR(30) "���} "
);
}
outs(ANSI_RESET);
FORCE_CLRTOEOL();
}
/* igetch() will do refresh(); */
ch = igetch();
switch (ch) {
/* ------------------ EXITING KEYS ------------------ */
case 'r': case 'R':
case 'Y': case 'y':
flExit = 1, retval = 999;
break;
case 'X':
flExit = 1, retval = 998;
break;
case 'A':
flExit = 1, retval = AUTHOR_PREV;
break;
case 'a':
flExit = 1, retval = AUTHOR_NEXT;
break;
case 'F': case 'f':
flExit = 1, retval = READ_NEXT;
break;
case 'B': case 'b':
flExit = 1, retval = READ_PREV;
break;
case KEY_LEFT:
/* because we have other keys to do so,
* disable now.
*/
/*
if(mf.xpos > 0)
{
mf.xpos --;
break;
}
*/
flExit = 1, retval = FULLUPDATE;
case 'q':
flExit = 1, retval = FULLUPDATE;
break;
/* from Kaede, thread reading */
case ']':
case '+':
flExit = 1, retval = RELATE_NEXT;
break;
case '[':
case '-':
flExit = 1, retval = RELATE_PREV;
break;
case '=':
flExit = 1, retval = RELATE_FIRST;
break;
/* ------------------ NAVIGATION KEYS ------------------ */
/* Simple Navigation */
case 'k': case 'K':
mf_backward(1);
break;
case 'j': case 'J':
PMORE_UINAV_FORWARDLINE();
break;
case Ctrl('F'):
case KEY_PGDN:
PMORE_UINAV_FORWARDPAGE();
break;
case Ctrl('B'):
case KEY_PGUP:
mf_backward(MFNAV_PAGE);
break;
case '0':
case 'g':
case KEY_HOME:
mf_goTop();
break;
case '$':
case 'G':
case KEY_END:
mf_goBottom();
#ifdef PMORE_ACCURATE_WRAPEND
/* allright. in design of pmore,
* it's possible that when user navigates to file end,
* a wrapped line made nav not 100%.
*/
mf_display();
invalidate = 0;
if(!mf_viewedAll())
{
/* one more try. */
mf_goBottom();
invalidate = 1;
}
#endif
break;
/* Compound Navigation */
case '.':
if(mf.xpos == 0)
mf.xpos ++;
mf.xpos ++;
break;
case ',':
if(mf.xpos > 0)
mf.xpos --;
break;
case '\t':
case '>':
//if(mf.xpos == 0 || mf.trunclines)
mf.xpos = (mf.xpos/8+1)*8;
break;
/* acronym form shift-tab, ^[[Z */
/* however some terminals does not send that. */
case KEY_STAB:
case '<':
mf.xpos = (mf.xpos/8-1)*8;
if(mf.xpos < 0) mf.xpos = 0;
break;
case '\r':
case '\n':
case KEY_DOWN:
if (mf_viewedAll() ||
(promptend == 2 && (ch == '\r' || ch == '\n')))
flExit = 1, retval = READ_NEXT;
else
PMORE_UINAV_FORWARDLINE();
break;
case ' ':
if (mf_viewedAll())
flExit = 1, retval = READ_NEXT;
else
PMORE_UINAV_FORWARDPAGE();
break;
case KEY_RIGHT:
if(mf_viewedAll())
promptend = 0, flExit = 1, retval = 0;
else
{
/* if mf.xpos > 0, widenav mode. */
/* because we have other keys to do so,
* disable it now.
*/
/*
if(mf.trunclines > 0)
{
if(mf.xpos == 0)
mf.xpos++;
mf.xpos++;
}
else if (mf.xpos == 0)
*/
PMORE_UINAV_FORWARDPAGE();
}
break;
case KEY_UP:
if(mf_viewedNone())
flExit = 1, retval = READ_PREV;
else
mf_backward(1);
break;
case Ctrl('H'):
if(mf_viewedNone())
flExit = 1, retval = READ_PREV;
else
mf_backward(MFNAV_PAGE);
break;
case 't':
if (mf_viewedAll())
flExit = 1, retval = RELATE_NEXT;
else
PMORE_UINAV_FORWARDPAGE();
break;
/* ------------------ SEARCH KEYS ------------------ */
case 's':
case '/':
{
char sbuf[81] = "";
char ans[4] = "n";
if(sr.search_str) {
free(sr.search_str);
sr.search_str = NULL;
}
getdata(b_lines - 1, 0, "[�j�M]����r:", sbuf,
40, DOECHO);
if (sbuf[0]) {
if (getdata(b_lines - 1, 0, "�Ϥ��j�p�g(Y/N/Q)? [N] ",
ans, sizeof(ans), LCECHO) && *ans == 'y')
sr.cmpfunc = strncmp;
else if (*ans == 'q')
sbuf[0] = 0;
else
sr.cmpfunc = strncasecmp;
}
sr.len = strlen(sbuf);
if(sr.len) sr.search_str = (unsigned char*)strdup(sbuf);
mf_search(MFSEARCH_FORWARD);
MFDISP_DIRTY();
}
break;
case 'n':
mf_search(MFSEARCH_FORWARD);
break;
case 'N':
mf_search(MFSEARCH_BACKWARD);
break;
/* ------------------ SPECIAL KEYS ------------------ */
case '1': case '2': case '3': case '4': case '5':
case '6': case '7': case '8': case '9':
case ';': case ':':
{
char buf[16] = "";
int i = 0;
int pageMode = (ch != ':');
if (ch >= '1' && ch <= '9')
buf[0] = ch, buf[1] = 0;
pmore_clrtoeol(b_lines-1, 0);
getdata_buf(b_lines-1, 0,
(pageMode ?
"���ܦ���(�Y�n����w��ƽЦb�����[.): " :
"���ܦ���: "),
buf, 8, DOECHO);
if(buf[0]) {
i = atoi(buf);
if(buf[strlen(buf)-1] == '.')
pageMode = 0;
if(i-- > 0)
mf_goto(i * (pageMode ? MFNAV_PAGE : 1));
}
MFDISP_DIRTY();
}
break;
case Ctrl('T'):
{
char buf[10];
getdata(b_lines - 1, 0, "��o�g�峹���J��Ȧs�ɡH[y/N] ",
buf, 4, LCECHO);
if (buf[0] == 'y') {
setuserfile(buf, ask_tmpbuf(b_lines - 1));
Copy(fpath, buf);
}
MFDISP_DIRTY();
}
break;
case 'h': case 'H': case KEY_F1:
case '?':
// help
show_help(pmore_help);
MFDISP_DIRTY();
break;
case 'E':
// admin edit any files other than ve help file
if (HasUserPerm(PERM_SYSOP) && strcmp(fpath, "etc/ve.hlp")) {
mf_detach();
vedit(fpath, NA, NULL);
REENTRANT_RESTORE();
return 0;
}
break;
case 'w':
switch(bpref.wrapmode)
{
case MFDISP_WRAP_WRAP:
bpref.wrapmode = MFDISP_WRAP_TRUNCATE;
// override_attr = ANSI_COLOR(31);
// override_msg = " �w�]�w���I��Ҧ�(���۰��_��)";
vmsg("�_��覡�w�]�w���I��Ҧ�(���۰��_��)");
break;
case MFDISP_WRAP_TRUNCATE:
bpref.wrapmode = MFDISP_WRAP_WRAP;
// override_attr = ANSI_COLOR(34);
// override_msg = " �w�]�w���۰��_��Ҧ�";
vmsg("�_��覡�w�]�w���۰��_��(�w�])");
break;
}
MFDISP_DIRTY();
break;
case 'W':
bpref.indicator = !bpref.indicator;
if(bpref.indicator)
// override_attr = ANSI_COLOR(34);
// override_msg = " ����_��Ÿ�";
vmsg("�]�w���_�������_��Ÿ�(�w�])");
else
// override_attr = ANSI_COLOR(31);
// override_msg = " ���A����_��Ÿ�";
vmsg("�]�w���_��ɤ�����_��Ÿ�");
MFDISP_DIRTY();
break;
case 'o':
bpref.oldwrapmode = !bpref.oldwrapmode;
bpref.oldstatusbar = !bpref.oldstatusbar;
MFDISP_DIRTY();
break;
case 'l':
switch(bpref.seperator)
{
case MFDISP_SEP_OLD:
bpref.seperator = MFDISP_SEP_LINE;
// override_attr = ANSI_COLOR(31);
// override_msg = " �]�w�������j�u";
vmsg("���j�u�]�w�������j�u");
break;
case MFDISP_SEP_LINE:
bpref.seperator = 0;
// override_attr = ANSI_COLOR(31);
// override_msg = " �]�w���L���j�u";
vmsg("�]�w���L���j�u");
break;
default:
bpref.seperator = MFDISP_SEP_OLD;
// override_attr = ANSI_COLOR(34);
// override_msg = " �DzΤ��j�u�[�Ŧ�";
vmsg("���j�u�]�w���DzΤ��j�u�[�Ŧ�(�w�])");
break;
}
MFDISP_DIRTY();
break;
case '\\':
case '|':
if(ch == '|')
bpref.rawmode += MFDISP_RAW_MODES-1;
else
{
/* '\\' */
/* should we do first time prompt checking here,
* or remove hotkey '\\'?
*/
static unsigned char first_prompt = 1;
if(first_prompt)
{
char ans[3] = "";
getdata(b_lines - 1, 0,
"�T�w���ܹw�]���e��ܤ覡�ܡH "
"(�Y���������� Enter)[y/N]"
,
ans, 3, LCECHO);
if(ans[0] != 'y')
break;
first_prompt = 0;
}
bpref.rawmode ++;
}
bpref.rawmode %= MFDISP_RAW_MODES;
switch(bpref.rawmode)
{
case MFDISP_RAW_NA:
// override_attr = ANSI_COLOR(34);
// override_msg = " ��ܹw�]�榡�Ƥ��e";
vmsg("��ܤ覡�]�w���w�]�榡�Ƥ��e");
break;
/*
case MFDISP_RAW_NOFMT:
// override_attr = ANSI_COLOR(31);
// override_msg = " �ٲ��۰ʮ榡��";
break;
*/
case MFDISP_RAW_NOANSI:
// override_attr = ANSI_COLOR(33);
// override_msg = " ��ܭ�l ANSI ����X";
vmsg("��ܤ覡�]�w����ܭ�l ANSI ����X");
break;
case MFDISP_RAW_PLAIN:
// override_attr = ANSI_COLOR(37);
// override_msg = " ��ܯ¤�r";
vmsg("��ܤ覡�]�w���¤�r");
break;
}
MFDISP_DIRTY();
break;
#ifdef PMORE_USE_ASCII_MOVIE
case 'p':
/* play ascii movie again
*/
if(mfmovie.mode == MFDISP_MOVIE_YES)
{
RESET_MOVIE();
mfmovie.mode = MFDISP_MOVIE_PLAYING;
mf_determinemaxdisps(0, 0); // display until last line
/* it is said that it's better not to go top. */
// mf_goTop();
mf_movieNextFrame();
MFDISP_DIRTY();
}
else if (mfmovie.mode == MFDISP_MOVIE_NO)
{
static char buf[10]="1";
//move(b_lines-1, 0);
/*
* TODO scan current page to confirm if this is a new style movie
*/
pmore_clrtoeol(b_lines-1, 0);
getdata_buf(b_lines - 1, 0,
"�o�i��O�Dzΰʵe��, "
"�Y�n��������п�J�t��(��): "
,
buf, 8, LCECHO);
if(buf[0])
{
float nf = 0;
sscanf(buf, "%f", &nf);
RESET_MOVIE();
mfmovie.mode = MFDISP_MOVIE_PLAYING_OLD;
float2tv(nf, &mfmovie.frameclk);
mfmovie.compat24 = 0;
/* are we really going to start? check termsize! */
if (t_lines != 24)
{
char ans[4];
pmore_clrtoeol(b_lines-1, 0);
getdata(b_lines - 1, 0,
"�Dzΰʵe�O�H 24 �欰���]�p��, "
"�n���� 24 ���? (�_�h�|�β{�b�����)[Yn] "
, ans, 3, LCECHO);
if(ans[0] == 'n')
mfmovie.compat24 = 0;
else
mfmovie.compat24 = 1;
}
mf_determinemaxdisps(0, 0); // display until last line
MFDISP_DIRTY();
}
}
break;
#endif
#ifdef DEBUG
case 'd':
debug = !debug;
MFDISP_DIRTY();
break;
#endif
case 'z':
ChessReplayGame(fpath);
break;
}
/* DO NOT DO ANYTHING HERE. NOT SAFE RIGHT NOW. */
}
mf_detach();
if (retval == 0 && promptend) {
pressanykey();
clear();
} else
outs(reset_color);
REENTRANT_RESTORE();
return retval;
}
// ---------------------------------------------------- Extra modules
#ifdef PMORE_USE_ASCII_MOVIE
void
float2tv(float f, struct timeval *ptv)
{
if(f < MOVIE_MIN_FRAMECLK)
f = MOVIE_MIN_FRAMECLK;
ptv->tv_sec = (long) f;
ptv->tv_usec = (f - (long)f) * MOVIE_SECOND_U;
}
/*
* maybe you can use add_io or you have other APIs in
* your I/O system, but we'll do it here.
* override if you have better methods.
*/
int
pmore_wait_input(struct timeval *ptv)
{
int sel = 0;
fd_set readfds;
if(num_in_buf() > 0)
return 1;
FD_ZERO(&readfds);
FD_SET(0, &readfds);
refresh();
#ifdef STATINC
STATINC(STAT_SYSSELECT);
#endif
do {
if(num_in_buf() > 0) // for EINTR
return 1;
sel = select(1, &readfds, NULL, NULL, ptv);
} while (sel < 0 && errno == EINTR);
/* EINTR, interrupted. I don't care! */
if(sel == 0)
return 0;
return 1;
}
MFPROTO unsigned char *
mf_movieFrameHeader(unsigned char *p)
{
if(mf.end - p < 3)
return NULL;
if(*p == 12) // ^L
return p+1;
if( *p == '^' &&
*(p+1) == 'L')
return p+2;
return NULL;
}
/*
* return meaning:
* I've got synchronized.
* If no (user breaks), return 0
*/
int mf_movieSyncFrame()
{
if (mfmovie.synctime.tv_sec > 0)
{
/* synchronize world timeline model */
struct timeval dv;
gettimeofday(&dv, NULL);
dv.tv_sec = mfmovie.synctime.tv_sec - dv.tv_sec;
if(dv.tv_sec < 0)
return 1;
dv.tv_usec = mfmovie.synctime.tv_usec - dv.tv_usec;
if(dv.tv_usec < 0) {
dv.tv_sec --;
dv.tv_usec += MOVIE_SECOND_U;
}
if(dv.tv_sec < 0)
return 1;
return !pmore_wait_input(&dv);
} else {
/* synchronize each frame clock model */
/* because Linux will change the timeval passed to select,
* let's use a temp value here.
*/
struct timeval dv = mfmovie.frameclk;
return !pmore_wait_input(&dv);
}
}
int
mf_movieNextFrame()
{
do
{
unsigned char *p = mf_movieFrameHeader(mf.disps);
if(p)
{
char buf[16];
int cbuf = 0;
float nf = 0;
/* process leading */
if (*p == 'S') {
gettimeofday(&mfmovie.synctime, NULL);
p++;
}
while (p < mf.end &&
((*p >= '0' && *p <= '9') || *p == '.'))
buf[cbuf++] = *p++;
buf[cbuf] = 0;
if(cbuf)
{
sscanf(buf, "%f", &nf);
float2tv(nf, &mfmovie.frameclk);
}
if(mfmovie.synctime.tv_sec > 0)
{
mfmovie.synctime.tv_usec += mfmovie.frameclk.tv_usec;
mfmovie.synctime.tv_sec += mfmovie.frameclk.tv_sec;
mfmovie.synctime.tv_sec += mfmovie.synctime.tv_usec / MOVIE_SECOND_U;
mfmovie.synctime.tv_usec %= MOVIE_SECOND_U;
}
mf_forward(1);
return 1;
}
} while(mf_forward(1) > 0);
return 0;
}
#endif
/* vim:sw=4:ts=8
*/