RJK's `pterm --help' patch. I _must_ find a better alternative to

[sgt/putty] / unix / uxstore.c

diff --git a/unix/uxstore.c b/unix/uxstore.c
index 76e19c1..06f6d3f 100644 (file)
--- a/unix/uxstore.c
+++ b/unix/uxstore.c
@@ -5,10 +5,20 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <ctype.h>
+#include <gtk/gtk.h>
+#include <gdk/gdkx.h>
+#include <X11/Xlib.h>
 #include "putty.h"
 #include "storage.h"
+#include "tree234.h"
 
-/* FIXME. For the moment, we do nothing at all here. */
+/*
+ * For the moment, the only existing Unix utility is pterm and that
+ * has no GUI configuration at all, so our write routines need do
+ * nothing. Eventually I suppose these will read and write an rc
+ * file somewhere or other.
+ */
 
 void *open_settings_w(char *sessionname)
 {
@@ -27,19 +37,105 @@ void close_settings_w(void *handle)
 {
 }
 
+/*
+ * Reading settings, for the moment, is done by retrieving X
+ * resources from the X display. When we introduce disk files, I
+ * think what will happen is that the X resources will override
+ * PuTTY's inbuilt defaults, but that the disk files will then
+ * override those. This isn't optimal, but it's the best I can
+ * immediately work out.
+ */
+
+static Display *display;
+
+struct xrm_string {
+    char *key;
+    char *value;
+};
+
+static tree234 *xrmtree = NULL;
+
+int xrmcmp(void *av, void *bv)
+{
+    struct xrm_string *a = (struct xrm_string *)av;
+    struct xrm_string *b = (struct xrm_string *)bv;
+    return strcmp(a->key, b->key);
+}
+
+void provide_xrm_string(char *string)
+{
+    char *p, *q;
+    struct xrm_string *xrms, *ret;
+
+    p = q = strchr(string, ':');
+    if (!q) {
+       fprintf(stderr, "pterm: expected a colon in resource string"
+               " \"%s\"\n", string);
+       return;
+    }
+    q++;
+    while (p > string && p[-1] != '.' && p[-1] != '*')
+       p--;
+    xrms = smalloc(sizeof(struct xrm_string));
+    xrms->key = smalloc(q-p);
+    memcpy(xrms->key, p, q-p);
+    xrms->key[q-p-1] = '\0';
+    while (*q && isspace(*q))
+       q++;
+    xrms->value = dupstr(q);
+
+    if (!xrmtree)
+       xrmtree = newtree234(xrmcmp);
+
+    ret = add234(xrmtree, xrms);
+    if (ret) {
+       /* Override an existing string. */
+       del234(xrmtree, ret);
+       add234(xrmtree, xrms);
+    }
+}
+
+char *get_setting(char *key)
+{
+    struct xrm_string tmp, *ret;
+    tmp.key = key;
+    if (xrmtree) {
+       ret = find234(xrmtree, &tmp, NULL);
+       if (ret)
+           return ret->value;
+    }
+    return XGetDefault(display, app_name, key);
+}
+
 void *open_settings_r(char *sessionname)
 {
-    return NULL;
+    static int thing_to_return_an_arbitrary_non_null_pointer_to;
+    display = GDK_DISPLAY();
+    if (!display)
+       return NULL;
+    else
+       return &thing_to_return_an_arbitrary_non_null_pointer_to;
 }
 
 char *read_setting_s(void *handle, char *key, char *buffer, int buflen)
 {
-    return NULL;
+    char *val = get_setting(key);
+    if (!val)
+       return NULL;
+    else {
+       strncpy(buffer, val, buflen);
+       buffer[buflen-1] = '\0';
+       return buffer;
+    }
 }
 
 int read_setting_i(void *handle, char *key, int defvalue)
 {
-    return defvalue;
+    char *val = get_setting(key);
+    if (!val)
+       return defvalue;
+    else
+       return atoi(val);
 }
 
 void close_settings_r(void *handle)