Add $ESC(code), which allows changing text color and attributes in banners.

git-svn-id: svn://katsu.triplehelix.org/dgamelaunch/trunk@615 db0b04b0-f4d1-0310-9a6d-de3e77497b0e

diff --git a/dgamelaunch.c b/dgamelaunch.c
index 463b958281b7352a9ef5a682cbcabc1d37e40f85..fca1b08964f362ce0b6806413ed2bf5c06221cae 100644 (file)
--- a/dgamelaunch.c
+++ b/dgamelaunch.c
@@ -369,6 +369,55 @@ idle_alarm_reset(void)
 
 /* ************************************************************* */
 
+char *
+bannerfuncmangle(char *buf, char *fromstr, char *(*strmangler)(char *))
+{
+    static char bufnew[81];
+    char *loc;
+    char *b = buf;
+    char *bnpos = bufnew;
+    memset(bufnew, 0, 80);
+
+    if (strstr(b, fromstr)) {
+       while ((loc = strstr(b, fromstr)) != NULL) {
+           char *fn = loc + strlen(fromstr);
+           if (*fn == '(') {
+               char *fn_end = strchr(fn, ')');
+               if (fn_end) {
+                   char funcparam[81];
+                   char *funcout;
+                   fn++;
+                   memset(funcparam, 0, 80);
+                   memcpy(funcparam, fn, (fn_end - fn));
+                   funcout = (*strmangler)(funcparam);
+                   memcpy(bnpos, b, (loc - b));
+                   bnpos += strlen(bnpos);
+                   b = fn_end;
+                   b++;
+                   memcpy(bnpos, funcout, strlen(funcout));
+                   bnpos += strlen(funcout);
+               }
+           }
+       }
+    }
+    strcpy(bnpos, b);
+    return bufnew;
+}
+
+char *
+bannermangler_func_esc(char *str)
+{
+    static char buf[11];
+    int len = strlen(str);
+    if (len > 7) len = 7;
+    buf[0] = '\x1b';
+    buf[1] = '[';
+    strncpy((buf + 2), str, len);
+    buf[len+2] = 'm';
+    buf[len+3] = '\0';
+    return buf;
+}
+
 
 char *
 bannerstrmangle(char *buf, char *fromstr, char *tostr)
@@ -527,6 +576,7 @@ loadbanner (char *fname, struct dg_banner *ban)
          } else {
              strncpy(bufnew, bannerstrmangle(bufnew, "$USERNAME", "[Anonymous]"), 80);
          }
+         strncpy(bufnew, bannerfuncmangle(bufnew, "$ESC", bannermangler_func_esc), 80);
          banner_addline(ban, bufnew);
       }
 

diff --git a/examples/dgamelaunch.conf b/examples/dgamelaunch.conf
index a5f92c063f7ae08028a239c666a7851b72c55167..c1a1079fa5d273f5a53284bf69c979c9522fe6fc 100644 (file)
--- a/examples/dgamelaunch.conf
+++ b/examples/dgamelaunch.conf
@@ -58,6 +58,8 @@ bannervars = [ "$MOTDTIME" = "2011.10.08",
 # - $VERSION replaced with "dgamelaunch v" + dgl version number.
 # - $USERNAME replaced with logged-in user's name, or with "[Anonymous]"
 # - $INCLUDE(filename) the named file will be inserted here.
+# - $ESC(code) Allows to use ECMA-48 SGR escape sequences, setting
+#    text color and attributes. will output "ESC [ code m"
 banner = "/dgl-banner"
 
 # The following two options are fairly insecure. They will force us to