* use vgetstring() with callbacks to implement generalcomplete.

git-svn-id: http://opensvn.csie.org/pttbbs/trunk@4937 63ad8ddf-47c3-0310-b6dd-a9e9d9715204

1 files changed, 160 insertions, 6 deletions

diff --git a/pttbbs/mbbsd/name.c b/pttbbs/mbbsd/name.c
index d4cef005..8ed2138b 100644
--- a/pttbbs/mbbsd/name.c
+++ b/pttbbs/mbbsd/name.c
@@ -1,7 +1,8 @@
 /* $Id$ */
 #include "bbs.h"
 
-#define MORE_MSG "按空白鍵可列出更多項目"
+#define COMPLETE_MORE_MSG   "按空白鍵可列出更多項目"
+#define COMPLETE_LIST_TITLE "相關資訊一覽表"
 
 void
 ToggleVector(struct Vector *list, int *recipient, const char *listfile, const char *msg)
@@ -100,11 +101,11 @@ nc_cb_peek(int key, VGET_RUNTIME *prt, void *instance)
 
 	    move(2, 0);
 	    clrtobot();
-	    printdash("相關資訊一覽表", 0);
+	    printdash(COMPLETE_LIST_TITLE, 0);
 
 	    nc_int->idx = ShowVector(&nc_int->sublist, 3, 0, NULL, nc_int->idx);
 	    if (nc_int->idx < Vector_length(&nc_int->sublist))
-		vshowmsg(MORE_MSG);
+		vshowmsg(COMPLETE_MORE_MSG);
 	    return VGETCB_NEXT;
 	    break;
 
@@ -168,7 +169,6 @@ usercomplete(const char *prompt, char *data)
     struct Vector namelist;
 
     Vector_init_const(&namelist, SHM->userid[0], MAX_USERS, IDLEN+1);
-
     namecomplete2(&namelist, prompt, data);
 }
 
@@ -234,12 +234,166 @@ gnc_complete(char *data, int *start, int *end,
     return count;
 }
 
+typedef struct {
+    int  start, end, nmemb, ptr;
+    int  morelist;
+    int  clearbot;  // YEA if screen was dirty
+    gnc_comp_func    compar;
+    gnc_perm_func    permission;
+    gnc_getname_func getname;
+} generalcomplete_int;
+
+static int
+gnc_cb_data(int key, VGET_RUNTIME *prt, void *instance)
+{
+    generalcomplete_int *gc_int = (generalcomplete_int*) instance;
+    char *data = prt->buf;
+    int   ret  = VGETCB_NEXT;	// reject by default
+    int   i;
+    gc_int->morelist = -1;
+
+    assert(prt->icurr+1 < prt->len);
+    // try to add character
+    data[prt->icurr]  = key;
+    data[prt->icurr+1]= 0;
+    if (gnc_findbound(data, &gc_int->start, &gc_int->end, gc_int->nmemb, gc_int->compar) >= 0)
+    {
+	// verify permission
+	for (i = gc_int->start; i <= gc_int->end; ++i)
+	    if ((*gc_int->permission)(i))
+		break;
+	// found something? accept it
+	if (i != gc_int->end + 1)
+	    ret = VGETCB_NONE;
+    }
+    // restore data buffer
+    data[prt->icurr]= 0;
+    return ret;
+}
+
+static int
+gnc_cb_peek(int key, VGET_RUNTIME *prt, void *instance)
+{
+    generalcomplete_int *gc_int = (generalcomplete_int*) instance;
+    char *data = prt->buf;
+
+    switch(key) {
+	case KEY_BS:	// backspace
+	    gc_int->morelist = -1;
+	    break;
+
+	case ' ':	// render complete page
+	    assert(prt->icurr == prt->iend);
+	    if (gc_int->morelist == -1) 
+	    {
+		int i;
+		char *first;
+		if (gnc_findbound(data, &gc_int->start, &gc_int->end, 
+				         gc_int->nmemb,  gc_int->compar) == -1)
+		    return VGETCB_NEXT;
+
+		i = gnc_complete (data, &gc_int->start, &gc_int->end, 
+					 gc_int->permission, gc_int->getname);
+		if (i == 1) {
+		    prt->iend = prt->icurr = strlen(data);
+		    return VGETCB_NEXT;
+		}
+		first = (*gc_int->getname)(gc_int->start);
+		i = prt->icurr;
+		while (first[i] && (*gc_int->compar)(gc_int->end, first, i + 1) == 0) {
+		    data[i] = first[i];
+		    ++i;
+		}
+		data[i] = '\0';
+		prt->iend = prt->icurr = i;
+		gc_int->morelist = gc_int->start;
+	    } else if (gc_int->morelist > gc_int->end)
+		return VGETCB_NEXT;
+
+	    // rendef list
+	    gc_int->clearbot = YEA;
+	    move(2, 0);
+	    clrtobot();
+	    printdash(COMPLETE_LIST_TITLE, 0);
+	    {
+		int col = 0, i = 0;
+		int len = prt->len;
+		while (len + col < t_columns-1) {
+		    for (i = 0; gc_int->morelist <= gc_int->end && i < p_lines; ++gc_int->morelist) {
+			if ((*gc_int->permission)(gc_int->morelist)) {
+			    move(3 + i, col);
+			    prints("%s ", (*gc_int->getname)(gc_int->morelist));
+			    ++i;
+			}
+		    }
+		    col += len + 2;
+		}
+	    }
+	    if (gc_int->morelist != gc_int->end + 1) {
+		vshowmsg(COMPLETE_MORE_MSG);
+	    }
+	    return VGETCB_NEXT;
+    }
+    return VGETCB_NONE;
+}
+
 
 int
 generalnamecomplete(const char *prompt, char *data, int len, size_t nmemb,
 		    gnc_comp_func compar, gnc_perm_func permission,
 		    gnc_getname_func getname)
 {
+    generalcomplete_int gc_int = { 
+	.start = 0,
+	.end   = nmemb-1,
+	.nmemb = nmemb,
+	.morelist = -1,
+	.clearbot = NA,
+	.compar     = compar,
+	.permission = permission,
+	.getname    = getname,
+    };
+    const VGET_CALLBACKS vcb = {
+	.peek = gnc_cb_peek,
+	.data = gnc_cb_data,
+    };
+    int ret = -1;
+
+    outs(prompt);
+    clrtoeol();
+
+    // init vector
+    ret = vgetstring(data, len, VGET_NO_NAV_EDIT, NULL, &vcb, &gc_int);
+    outc('\n');
+
+    // vgetstring() return string length, but namecomplete needs to return
+    // the index of input string.
+
+    if (ret < 1)
+    {
+	data[0] = '\0';
+	return -1;
+    }
+
+    gnc_findbound(data, &gc_int.start, &gc_int.end, nmemb, compar);
+    if (gnc_complete(data, &gc_int.start, &gc_int.end, permission, getname) == 1 || 
+	(*compar)(gc_int.start, data, len) == 0)
+    {
+	strlcpy(data, (*getname)(gc_int.start), len);
+	ret = gc_int.start;
+    } else {
+	data[0] = '\0';
+	ret = -1;
+    }
+
+    return ret;
+}
+
+int
+generalnamecomplete_old(const char *prompt, char *data, int len, size_t nmemb,
+		    gnc_comp_func compar, gnc_perm_func permission,
+		    gnc_getname_func getname)
+{
     int             x, y, origx, scrx, ch, i, morelist = -1, col, ret = -1;
     int             start, end, ptr;
     int             clearbot = NA;
@@ -310,7 +464,7 @@ generalnamecomplete(const char *prompt, char *data, int len, size_t nmemb,
 	    clearbot = YEA;
 	    move(2, 0);
 	    clrtobot();
-	    printdash("相關資訊一覽表", 0);
+	    printdash(COMPLETE_LIST_TITLE, 0);
 
 	    col = 0;
 	    while (len + col < t_columns-1) {
@@ -325,7 +479,7 @@ generalnamecomplete(const char *prompt, char *data, int len, size_t nmemb,
 		col += len + 2;
 	    }
 	    if (morelist != end + 1) {
-		vshowmsg(MORE_MSG);
+		vshowmsg(COMPLETE_MORE_MSG);
 	    }
 	    continue;