Add --show-config special option

This prints a list of configure parameters, and then exits. If a second
argument is given, it only prints the value of that config parameter,
so that tricks like cp *.svg `xboard --show-config Datadir`/themes/chu
can be used in install scripts of packages with piece images.

diff --git a/gtk/xboard.c b/gtk/xboard.c
index 20eeaff..6769a19 100644 (file)
--- a/gtk/xboard.c
+++ b/gtk/xboard.c
@@ -800,6 +800,23 @@ main (int argc, char **argv)
     }
 #endif
 
+    if(argc > 1 && !strcmp(argv[1], "--show-config")) { // [HGM] install: called to print config info
+       typedef struct {char *name, *value; } Config;
+       static Config configList[] = {
+         { "Datadir", DATADIR },
+         { "Sysconfdir", SYSCONFDIR },
+         { NULL }
+       };
+       int i;
+
+       for(i=0; configList[i].name; i++) {
+           if(argc > 2 && strcmp(argv[2], configList[i].name)) continue;
+           if(argc > 2) printf("%s", configList[i].value);
+           else printf("%-12s: %s\n", configList[i].name, configList[i].value);
+       }
+       exit(0);
+    }
+
     /* set up keyboard accelerators group */
     GtkAccelerators = gtk_accel_group_new();
 

diff --git a/xaw/xboard.c b/xaw/xboard.c
index d3d6ba2..292f7c2 100644 (file)
--- a/xaw/xboard.c
+++ b/xaw/xboard.c
@@ -990,6 +990,23 @@ main (int argc, char **argv)
        exit(0);
     }
 
+    if(argc > 1 && !strcmp(argv[1], "--show-config")) { // [HGM] install: called to print config info
+       typedef struct {char *name, *value; } Config;
+       static Config configList[] = {
+         { "Datadir", DATADIR },
+         { "Sysconfdir", SYSCONFDIR },
+         { NULL }
+       };
+       int i;
+
+       for(i=0; configList[i].name; i++) {
+           if(argc > 2 && strcmp(argv[2], configList[i].name)) continue;
+           if(argc > 2) printf("%s", configList[i].value);
+           else printf("%-12s: %s\n", configList[i].name, configList[i].value);
+       }
+       exit(0);
+    }
+
     programName = strrchr(argv[0], '/');
     if (programName == NULL)
       programName = argv[0];