From ff752029df033c16591f6a1556f03d2ce4bf7229 Mon Sep 17 00:00:00 2001
From: "Eric S. Raymond" <esr@thyrsus.com>
Date: Tue, 29 Sep 2009 21:14:34 +0000
Subject: Add some debugging machinery - we can now dump set flags in a
 convenient form.

---
 devtools/maskaudit | 47 +++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 45 insertions(+), 2 deletions(-)

(limited to 'devtools')

diff --git a/devtools/maskaudit b/devtools/maskaudit
index 24c0b9f6..8adb1918 100755
--- a/devtools/maskaudit
+++ b/devtools/maskaudit
@@ -4,6 +4,8 @@
 # client-side library.
 #
 # With -p, dump a Python status mask list translated from the C one.
+#
+# With -c, generare C code to dump masks for debugging purposes.
 
 import sys, commands, glob, getopt
 
@@ -11,10 +13,13 @@ class SourceExtractor:
     def __init__(self):
         self.daemonfiles = ["gpsd.c", "libgpsd_core.c", "pseudonmea.c"] + glob.glob("driver_*.c")
         self.masks = []
+        self.primitive_masks = []
         for line in file("gps.h"):
             if line.startswith("#define") and "_SET" in line:
                 fields = line.split()
                 self.masks.append((fields[1], fields[2]))
+                if fields[2].endswith("u"):
+                    self.primitive_masks.append((fields[1], fields[2]))
     
     def in_library(self, flag):
         (status, output) = commands.getstatusoutput("grep %s libgps.c libgps_json.c" % flag)
@@ -26,17 +31,19 @@ class SourceExtractor:
 
 if __name__ == '__main__':
     try:
-        (options, arguments) = getopt.getopt(sys.argv[1:], "pt")
+        (options, arguments) = getopt.getopt(sys.argv[1:], "ptc")
         tabulate = False
         pythonize = False
+        codegen = False
         for (switch, val) in options:
             if (switch == '-t'):
                 tabulate = True
             if (switch == '-p'):
                 pythonize = True
+            if (switch == '-c'):
+                codegen = True
 
         source = SourceExtractor()
-        print source.daemonfiles
 
         if tabulate:
             print "%-14s	%8s %8s" % (" ", "Library", "Daemon")
@@ -47,6 +54,42 @@ if __name__ == '__main__':
                 if v[-1] == 'u':
                     v = v[:-1]
                 print "%-15s\t= %s" % (d, v)
+        if codegen:
+            maxout = 0
+            for (d, v) in source.primitive_masks:
+                if source.in_daemon(d):
+                    maxout += len(d) - len("_SET") + 1
+            print """/* This code is generated.  Do not hand-hack it! */
+#include <stdio.h>
+#include <string.h>
+
+#include \"gpsd_config.h\"	/* for strlcat() */
+#include \"gpsd.h\"
+
+const char *gpsd_maskdump(gps_mask_t set)
+{
+    static char buf[%d];
+    const struct {
+        gps_mask_t      mask;
+        const char      *name;
+    } *sp, names[] = {"""  % (maxout + 1,)
+            for (flag, value) in source.primitive_masks:
+                print "        {%s,\t\"%s\"}," % (flag, flag[:-4])
+            print '''\
+    };
+
+    buf[0] = '\\0';
+    for (sp = names; sp < names + sizeof(names)/sizeof(names[0]); sp++)
+        if ((set & sp->mask)!=0) {
+            (void)strlcat(buf, sp->name, sizeof(buf));
+            (void)strlcat(buf, "|", sizeof(buf));
+        }
+    if (buf[0] != \'\\0\')
+        buf[strlen(buf)-1] = \'\\0\';
+    return buf;
+}
+'''
+
     except KeyboardInterrupt:
         pass
 
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