From 0b0e5b3e63bdf95b897ef01160a7bfd26958ddc6 Mon Sep 17 00:00:00 2001
From: Tangles <andyrthomson@gmail.com>
Date: Tue, 11 Feb 2020 00:21:47 +1100
Subject: [PATCH] userprefs - askpref (prompt user for a string value - be
 careful with this)

---
 config.l      |  1 +
 dgamelaunch.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 dgamelaunch.h |  2 ++
 dgl-common.c  |  3 +++
 4 files changed, 52 insertions(+)

diff --git a/config.l b/config.l
index 52a29d0..01e71f2 100644
--- a/config.l
+++ b/config.l
@@ -128,6 +128,7 @@ chpasswd	{ yylval.i = DGLCMD_CHPASSWD;   return TYPE_DGLCMD0; }
 chmail		{ yylval.i = DGLCMD_CHMAIL;     return TYPE_DGLCMD0; }
 setprefpath	{ yylval.i = DGLCMD_SETPREFPATH; return TYPE_DGLCMD1; }
 setpref 	{ yylval.i = DGLCMD_SETPREF;    return TYPE_DGLCMD2; }
+askpref 	{ yylval.i = DGLCMD_ASKPREF;    return TYPE_DGLCMD2; }
 readprefs	{ yylval.i = DGLCMD_READPREFS;  return TYPE_DGLCMD0; }
 writeprefs	{ yylval.i = DGLCMD_WRITEPREFS; return TYPE_DGLCMD0; }
 watch_menu	{ yylval.i = DGLCMD_WATCH_MENU; return TYPE_DGLCMD0; }
diff --git a/dgamelaunch.c b/dgamelaunch.c
index 7cfa4ea..a5b36af 100644
--- a/dgamelaunch.c
+++ b/dgamelaunch.c
@@ -2272,6 +2272,52 @@ setpref(char *key, char *val)
     return TRUE;
 }
 
+void
+delpref(char *key)
+{
+    struct userpref *cpref = userprefs;
+    /* ugly special case #1 (list empty) */
+    if (!userprefs) return;
+    /* ugly special case #2 (delete first item) */
+    if (!strcmp (userprefs->name, key)) {
+        free(userprefs->name);
+        free(userprefs->value);
+        userprefs = userprefs->npref;
+        free(cpref);
+        return;
+    }
+    /* ugly general case (delete another item) */
+    while (cpref->npref) {
+        if (!strcmp (cpref->npref->name, key)) {
+            struct userpref *dpref = cpref->npref;
+            cpref->npref = dpref->npref;
+            free(dpref->name);
+            free(dpref->value);
+            free(dpref);
+            return;
+        }
+        cpref = cpref->npref;
+    }
+}
+
+int
+askpref (char *prompt, char *key)
+{
+    /* blank entry removes any previously stored value */
+    char value[80];
+    clear();
+    drawbanner(&banner);
+    mvaddstr(13, 1, prompt);
+    mvaddstr(14, 1, "=> ");
+    mygetnstr(value, 80, 1);
+    if (strlen(value) == 0) {
+        delpref(key);
+        return TRUE;
+    }
+    return setpref(key, value);
+}
+
+
 /* ************************************************************* */
 
 int
diff --git a/dgamelaunch.h b/dgamelaunch.h
index f561f6a..b746074 100644
--- a/dgamelaunch.h
+++ b/dgamelaunch.h
@@ -69,6 +69,7 @@ typedef enum
     DGLCMD_SETENV,	/* setenv foo bar */
     DGLCMD_SETPREFPATH,	/* setprefpath foo */
     DGLCMD_SETPREF,	/* setpref foo bar */
+    DGLCMD_ASKPREF,	/* askpref "prompt" foo */
     DGLCMD_READPREFS,	/* readprefs */
     DGLCMD_WRITEPREFS,	/* writeprefs */
     DGLCMD_WATCH_MENU,  /* watch_menu */
@@ -362,6 +363,7 @@ extern int readprefs(void);
 extern int writeprefs(void);
 extern const char *getpref(char *key, char *fallback);
 extern int setpref(char *key, char *val);
+extern int askpref(char *prompt, char *key);
 /*extern int menuloop(void);*/
 extern void ttyrec_getpty(void);
 #ifndef HAVE_SETENV
diff --git a/dgl-common.c b/dgl-common.c
index 514b361..53f76a9 100644
--- a/dgl-common.c
+++ b/dgl-common.c
@@ -388,6 +388,9 @@ dgl_exec_cmdqueue_w(struct dg_cmdpart *queue, int game, struct dg_user *me, char
         case DGLCMD_SETPREF:
             if (p1 && p2) setpref(p1, p2);
             break;
+        case DGLCMD_ASKPREF:
+            if (p1 && p2) askpref(p1, p2);
+            break;
         case DGLCMD_READPREFS:
             if (loggedin && userpref_path) readprefs();
 	    break;
-- 
2.47.3