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authorpiaip <piaip@63ad8ddf-47c3-0310-b6dd-a9e9d9715204>2005-06-03 11:32:46 +0800
committerpiaip <piaip@63ad8ddf-47c3-0310-b6dd-a9e9d9715204>2005-06-03 11:32:46 +0800
commitaf8d710b42a61046d75dac8eb91d22101c3d0d31 (patch)
treea748e0cc84b6f02d80dd119ae5e767484fd2be96 /mbbsd
parentdd2bd13cacbe4827f9823f955cb77f8c86a74aea (diff)
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pmore: speed up by supporting scroll/rscroll.
git-svn-id: http://opensvn.csie.org/pttbbs/trunk/pttbbs@2743 63ad8ddf-47c3-0310-b6dd-a9e9d9715204
Diffstat (limited to 'mbbsd')
-rw-r--r--mbbsd/more.c12
-rw-r--r--mbbsd/pmore.c125
2 files changed, 99 insertions, 38 deletions
diff --git a/mbbsd/more.c b/mbbsd/more.c
index 33af9d74..04d2baff 100644
--- a/mbbsd/more.c
+++ b/mbbsd/more.c
@@ -1,7 +1,16 @@
/* $Id$ */
-#define REAL_MORE
#include "bbs.h"
+#ifdef USE_PIAIP_MORE
+
+/* use new pager */
+int more(char *fpath, int promptend)
+{
+ return pmore(fpath, promptend);
+}
+
+#else
+
/* 把這兩個 size 調到一頁的範圍是不是能降低不必要的 IO ? */
#define MORE_BUFSIZE 4096
#define MORE_WINSIZE 4096
@@ -577,3 +586,4 @@ more(char *fpath, int promptend)
outs(reset_color);
return 0;
}
+#endif
diff --git a/mbbsd/pmore.c b/mbbsd/pmore.c
index 2ee82a3a..0d289171 100644
--- a/mbbsd/pmore.c
+++ b/mbbsd/pmore.c
@@ -15,7 +15,7 @@
#include <ctype.h>
#include <string.h>
-// Platform Related
+// Platform Related. NoSync is faster but if we don't have it...
#ifndef MAP_NOSYNC
#define MAP_NOSYNC MAP_SHARED
#endif
@@ -30,11 +30,11 @@ typedef struct
*maxdisps; // a very special pointer,
// consider as "disps of last page"
off_t len, // file total length
- lineno; // lineno of disps
-
+ lineno, // lineno of disps
+ oldlineno; // last drawn lineno, < 1 means full update
} MmappedFile;
-MmappedFile mf = { 0, 0, 0, 0, 0 }; // current file
+MmappedFile mf = { 0, 0, 0, 0, 0, 0, 0 }; // current file
/* mf_* navigation commands and return value meanings */
enum {
@@ -42,18 +42,13 @@ enum {
MFNAV_EXCEED, // request exceeds buffer
} MF_NAV_COMMANDS;
-#define MFNAV_PAGE (t_lines-2)
-#define RESETMF() memset(&mf, 0, sizeof(mf));
+#define MFNAV_PAGE (t_lines-2) // when navigation, how many lines in a page to move
+#define MFDISP_PAGE (t_lines-1) // for display, the real number of lines to be shown.
#define ANSI_ESC (0x1b)
-
-int mf_backward(int);
+#define RESETMF() { memset(&mf, 0, sizeof(mf)); mf.oldlineno = -1; }
+#define RESETAH() { memset(&ah, 0, sizeof(ah)); }
/* search records */
-enum {
- MFSEARCH_FORWARD,
- MFSEARCH_BACKWARD,
-} MFSEARCH_DIRECTION;
-
typedef struct
{
int len;
@@ -63,6 +58,13 @@ typedef struct
SearchRecord sr = { 0, strncmp, "" };
+enum {
+ MFSEARCH_FORWARD,
+ MFSEARCH_BACKWARD,
+} MFSEARCH_DIRECTION;
+
+int mf_backward(int); // used by mf_attach
+
/*
* mmap basic operations
*/
@@ -195,8 +197,11 @@ int mf_goTop()
int mf_goBottom()
{
+ mf.disps = mf.maxdisps;
+ /*
mf.disps = mf.end-1;
mf_backward(MFNAV_PAGE);
+ */
// lineno?
mf_sync_lineno();
return MFNAV_OK;
@@ -296,6 +301,7 @@ void mf_parseHeader()
* #define STR_POST1 "看板:"
* #define STR_POST2 "站內:"
*/
+ RESETAH();
ah.lines = -1;
ah.authorlen= -1;
ah.boardlen = -1;
@@ -340,31 +346,86 @@ void mf_parseHeader()
}
/*
- * display mf content from disps for MFNAV_PAGE+1
+ * display mf content from disps for MFDISP_PAGE
*/
#define STR_ANSICODE "[0123456789;,"
#define DISP_HEADS_LEN (4) // strlen of each heads
-static char *disp_heads[] = {"作者", "標題", "時間", "轉信"};
+static const char *disp_heads[] = {"作者", "標題", "時間", "轉信"};
void mf_disp()
{
int lines = 0, col = 0, currline = 0;
+ int startline = 0, endline = MFDISP_PAGE-1;
+
+ /* 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;
+ if(scrll > MFDISP_PAGE-1)
+ scrll = MFDISP_PAGE-1;
+
+ i = scrll;
+ while(i-- > 0)
+ if (reverse)
+ rscroll(); // v
+ else
+ scroll(); // ^
+ if(reverse)
+ {
+ startline = 0; // v
+ endline = scrll-1;
+ }
+ else
+ {
+ startline = MFDISP_PAGE - 1 - scrll;
+ endline = MFDISP_PAGE - 1;
+ }
+ move(startline, 0);
+ }
+ else
+ clear(), move(0, 0);
mf.dispe = mf.disps;
- while (lines < MFNAV_PAGE+1)
+ while (lines < MFDISP_PAGE)
{
int inAnsi = 0;
currline = mf.lineno + lines;
col = 0;
-
- if (currline < ah.lines)
+
+ /* Is currentline visible? */
+ if (lines < startline || lines > endline)
{
+ while(mf.dispe < mf.end && *mf.dispe != '\n')
+ mf.dispe++;
+ col = t_columns; /* prevent printing trailing '\n' */
+ }
+ /* Now, consider what kind of line
+ * (header, seperator, or normal text)
+ * is current line.
+ */
+ else if (currline == ah.lines)
+ {
+ /* case 1, header seperator line */
+ outs("\033[36m");
+ for(col = 0; col < t_columns -2; col+=2)
+ {
+ outs("─");
+ }
+ outs("\033[m");
+ while(mf.dispe < mf.end && *mf.dispe != '\n')
+ mf.dispe++;
+ }
+ else if (currline < ah.lines)
+ {
+ /* case 2, we're printing headers */
int w = t_columns - 2, i_author = 0;
int flDrawBoard = 0, flDrawAuthor = 0;
- char *ph = disp_heads[currline];
-
- /* case 1, we're printing headers */
+ const char *ph = disp_heads[currline];
if (currline == 0 && ah.boardlen > 0)
flDrawAuthor = 1;
@@ -434,18 +495,6 @@ draw_header:
while(mf.dispe < mf.end && *mf.dispe != '\n')
mf.dispe++;
}
- else if (currline == ah.lines)
- {
- /* case 2, header seperator line */
- outs("\033[36m");
- for(col = 0; col < t_columns -2; col+=2)
- {
- outs("─");
- }
- outs("\033[m");
- while(mf.dispe < mf.end && *mf.dispe != '\n')
- mf.dispe++;
- }
else if(mf.dispe < mf.end)
{
/* case 3, normal text */
@@ -512,6 +561,7 @@ draw_header:
outc('\n');
lines ++;
}
+ mf.oldlineno = mf.lineno;
}
/* --------------------- MAIN PROCEDURE ------------------------- */
@@ -540,6 +590,9 @@ static const char * const pmore_help[] = {
NULL
};
+/*
+ * piaip's more, a replacement for old more
+ */
int pmore(char *fpath, int promptend)
{
int flExit = 0, retval = 0;
@@ -550,20 +603,18 @@ int pmore(char *fpath, int promptend)
return -1;
/* reset and parse article header */
- memset(&ah, 0, sizeof(ah));
mf_parseHeader();
clear();
while(!flExit)
{
- clear();
- move(0, 0);
mf_disp();
if(promptend == NA && mf_viewedAll())
break;
move(b_lines, 0);
+ clrtoeol();
#ifdef DEBUG
prints("L#%d prmpt=%d Disp:%08X/%08X/%08X, File:%08X/%08X(%d)",
@@ -754,7 +805,7 @@ int pmore(char *fpath, int promptend)
break;
case 'E':
- // admin edit ve help file
+ // admin edit any files other than ve help file
if (HAS_PERM(PERM_SYSOP) && strcmp(fpath, "etc/ve.hlp")) {
mf_detach();
vedit(fpath, NA, NULL);