From c419d74540378a76fd23b0332b6e11f5ff77e9bb Mon Sep 17 00:00:00 2001
From: piaip <piaip@63ad8ddf-47c3-0310-b6dd-a9e9d9715204>
Date: Fri, 11 Apr 2008 18:41:43 +0000
Subject: - pmore: fix incorrect display position for ESC_STAR variables in
 vertical scrolling. - pmore: put sample expand_esc_star into source for
 better porting. #define HAVE_EXPAND_ESC_STAR to define your own.

git-svn-id: http://opensvn.csie.org/pttbbs/trunk/pttbbs@4135 63ad8ddf-47c3-0310-b6dd-a9e9d9715204
---
 include/cmbbs.h |  3 +++
 include/proto.h |  3 ++-
 mbbsd/pmore.c   | 75 +++++++++++++++++++++++++++++++++++++++++++++++++--------
 3 files changed, 70 insertions(+), 11 deletions(-)

diff --git a/include/cmbbs.h b/include/cmbbs.h
index a7416a36..72367a1d 100644
--- a/include/cmbbs.h
+++ b/include/cmbbs.h
@@ -34,4 +34,7 @@ extern const char* money_level(int money);
 /* string.c */  
 extern void obfuscate_ipstr(char *s);
 
+/* time.c */
+extern const char *Now();	// m3 flavor time string
+
 #endif
diff --git a/include/proto.h b/include/proto.h
index 8fdee450..cf4c65f0 100644
--- a/include/proto.h
+++ b/include/proto.h
@@ -344,7 +344,6 @@ int vget(int line, int col, const char *prompt, char *buf, int len, int mode);
 #define vkey() igetch()
 
 /* kaede */
-int  expand_esc_star(char *buf, const char *src, int szbuf);
 char*Ptt_prints(char *str, size_t size, int mode);
 void prints(const char *fmt, ...) GCC_CHECK_FORMAT(1,2);
 void mouts(int y, int x, const char *str);
@@ -353,6 +352,8 @@ void outmsglr(const char *msg, int llen, const char *rmsg, int rlen);
 void outs_n(const char *str, int n);
 void outslr(const char *left, int leftlen, const char *right, int rightlen);
 void out_lines(const char *str, int line);
+#define HAVE_EXPAND_ESC_STAR
+int  expand_esc_star(char *buf, const char *src, int szbuf);
 
 /* lovepaper */
 int x_love(void);
diff --git a/mbbsd/pmore.c b/mbbsd/pmore.c
index b05612bc..2f399042 100644
--- a/mbbsd/pmore.c
+++ b/mbbsd/pmore.c
@@ -509,6 +509,49 @@ enum MFSEARCH_DIRECTION {
 // --------------------------------------------- </Defines and constants>
 
 // --------------------------------------------- <Optional Modules>
+
+#if defined(PMORE_EXPAND_ESC_STAR) && !defined(HAVE_EXPAND_ESC_STAR)
+//
+// support TWBBS ESC*s style variables.
+// if return value > 1, pmore will show warning message.
+//
+// This is a sample expand_esc_star() function.
+// If your system supports more variables, please write
+// your own version outside pmore.c, and define in config.h:
+//
+// #define HAVE_EXPAND_ESC_STAR
+//
+
+int
+expand_esc_star(char *buf, const char *src, int szbuf)
+{
+    assert(*src == KEY_ESC && *(src+1) == '*');
+    src += 2;
+    switch(*src)
+    {
+        // secure content (return 1)
+        case 't':   // current time.
+            strlcpy(buf, Now(), szbuf);
+            return 1;
+        // insecure content (return 2)
+        case 's':   // current user id
+            strlcpy(buf, cuser.userid, szbuf);
+            return 2;
+        case 'l':   // current user logins
+            snprintf(buf, szbuf, "%d", cuser.numlogins);
+            return 2;
+        case 'p':   // current user posts
+            snprintf(buf, szbuf, "%d", cuser.numposts);
+            return 2;
+    }
+
+    // unknown characters, return from star.
+    strlcpy(buf, src-1, szbuf);
+    return 0;
+}
+
+#endif // defined(PMORE_EXPAND_ESC_STAR) && !defined(HAVE_EXPAND_ESC_STAR)
+
 #ifdef PMORE_USE_ASCII_MOVIE
 enum _MFDISP_MOVIE_MODES {
     MFDISP_MOVIE_UNKNOWN= 0,
@@ -1508,16 +1551,12 @@ mf_display()
 
 #ifdef PMORE_EXPAND_ESC_STAR // support TWBBS ESC*s style variables.
                     //
-                    // To use this, pmore needs your BBS supporting function:
-                    //    int expand_esc_star(dest, src, szdesc);
-                    // if return value > 1, pmore will show warning message.
+                    // Please define your own expand_esc_star by
                     //
-                    // This can map to Ptt_prints in PTT series BBS and 
-                    // outx in M3.  However expand_esc_star just stores
-                    // variable in desc, so M3/outx must be modified.
+                    // (config.h) #define HAVE_EXPAND_ESC_STAR
+                    // (*.c) int expand_esc_star(const char*, char*, int);
                     //
-                    // If you need sample, check out pttbbs source for a 
-                    // sample expand_esc_star and Ptt_prints.
+                    // or use the sample version inside pmore source.
                     //
                     if(inAnsi && 
                             mf.end - mf.dispe > 2 &&
@@ -1530,6 +1569,7 @@ mf_display()
 
                         // the max expanded size of esc_star.
                         char buf[64] = "" ; 
+                        char *pbuf = buf;
 
                         memcpy(buf, mf.dispe, 3);  // ^[*s
                         mf.dispe += 2;
@@ -1551,13 +1591,28 @@ mf_display()
                         }
                         i = strlen(buf);
 
+                        // also try to consider xprefix
+                        // (assume no ANSI stuff in converted buf)
+                        if (xprefix > 0) 
+                        {
+                            if (xprefix >= i)
+                            {
+                                xprefix -= i;
+                                i = 0;
+                            } else {
+                                // xprefix < i, change buffer offset.
+                                pbuf += xprefix;
+                                xprefix = 0;
+                            }
+                        }
+
                         if (col + i > maxcol)
                             i = maxcol - col;
                         if(i > 0)
                         {
-                            buf[i] = 0;
+                            pbuf[i] = 0;
                             col += i;
-                            outs(buf);
+                            outs(pbuf);
                         }
                         inAnsi = 0;
                     } else
-- 
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