cmatrix.c: Adds Japanese characters support

Adds classic mode which can be invoked with "c", which uses Japanese
characters instead of the regular English characters that cmatrix
outputed earlier. Done to match up with the original matrix.

The starting, ending, and range for randum number (corresponding to the
unicode character) is modified to suite the Japanese character range.
Requires appropriate Japanese fonts to make it work.

Fixes #57
Signed-off-by: Abishek V Ashok <[email protected]>

cmatrix.c

@@ -127,10 +127,11 @@ void c_die(char *msg, ...) {
 }
 
 void usage(void) {
-    printf(" Usage: cmatrix -[abBfhlsmVx] [-u delay] [-C color]\n");
+    printf(" Usage: cmatrix -[abBcfhlsmVx] [-u delay] [-C color]\n");
     printf(" -a: Asynchronous scroll\n");
     printf(" -b: Bold characters on\n");
     printf(" -B: All bold characters (overrides -b)\n");
+    printf(" -c: Use Japanese characters as seen in the original matrix. Requires appropriate fonts\n");
     printf(" -f: Force the linux $TERM type to be on\n");
     printf(" -l: Linux mode (uses matrix console font)\n");
     printf(" -L: Lock mode (can be closed from another terminal)\n");
@@ -285,13 +286,14 @@ int main(int argc, char *argv[]) {
     int randnum = 0;
     int randmin = 0;
     int pause = 0;
+    int classic = 0;
 
     srand((unsigned) time(NULL));
     setlocale(LC_ALL, "");
 
     /* Many thanks to morph- ([email protected]) for this getopt patch */
     opterr = 0;
-    while ((optchr = getopt(argc, argv, "abBfhlLnrosmxVu:C:")) != EOF) {
+    while ((optchr = getopt(argc, argv, "abBcfhlLnrosmxVu:C:")) != EOF) {
         switch (optchr) {
         case 's':
             screensaver = 1;
@@ -330,6 +332,9 @@ int main(int argc, char *argv[]) {
                        "white, yellow, cyan, magenta " "and black.\n");
             }
             break;
+        case 'c':
+            classic = 1;
+            break;
         case 'f':
             force = 1;
             break;
@@ -430,7 +435,12 @@ if (console) {
     }
 
     /* Set up values for random number generation */
-    if (console || xwindow) {
+    if(classic) {
+        /* Japanese character unicode range [they are seen in the original cmatrix] */
+        randnum = 63;
+        randmin = 12288;
+        highnum = 12351;
+    } else if (console || xwindow) {
         randnum = 51;
         randmin = 166;
         highnum = 217;