diff options
Diffstat (limited to 'mbbsd/pmore.c')
| -rw-r--r-- | mbbsd/pmore.c | 125 |
1 files changed, 88 insertions, 37 deletions
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); |