use simpler find for resource constrain Linuxes

lib/ozwpaths.js

@@ -22,68 +22,66 @@ var cp = require('child_process');
 var util = require('util');
 var path = require('path');
 
+function doScript(script, suppressException) {
+  //console.log('---> ' + script);
+  try {
+    return(cp.execSync(script).toString());
+  } catch(e) {
+    //console.log('---> ' + e.toString());
+    if (!suppressException) throw e;
+  }
+}
+
 var configs = {
   includedir: {
     findpattern: 'OZWException.h',
-    locations: ["/usr/include/", "/usr/local/include/"],
-    default: "/usr/local/include/openzwave/"
+    locations: ["/usr/local/include", "/usr/include"]
   },
   libdir: {
     findpattern: 'libopenzwave.so',
-    locations: ["/usr/lib*", "/usr/local/lib*"],
-    default: "/usr/local/lib64/"
+    locations: ["/usr/local/lib64", "/usr/local/lib", "/usr/lib64", "/usr/lib"]
   },
   sysconfdir: {
     findpattern: 'zwcfg.xsd',
-    locations: ["/usr/etc/", "/usr/local/etc/", "/etc/"],
-    default: "/usr/local/etc/openzwave/"
+    locations: ["/usr/local/etc", "/usr/etc", "/etc"]
   },
   docdir: {
-    findpattern: 'openzwave-*',
-    locations: ["/usr/local/share/doc/"],
-    default: "/usr/local/share/doc/openzwave-1.4.2278"
+    findpattern: 'Doxyfile.in',
+    locations: ["/usr/local/share/doc", "/usr/doc"]
   }
 }
 
-var usepkgconfig = true;
+var usepkgconfig = false;
 try {
   cp.execSync("pkg-config --exists libopenzwave");
 } catch (e) {
   usepkgconfig = false;
 }
 
 function getConfigItem(item) {
-  // 1. try using pkg-config
+  // 1. try the easy way first: use pkg-config and libopenzwave.pc
   if (usepkgconfig) {
     var cmdfmt = "pkg-config --variable=%s libopenzwave";
     var cmd = util.format(cmdfmt, item);
     return (cp.execSync(cmd).toString().split('\n')[0]);
   } else {
     // 2. try using find
-    var cmdfmt = "find %s ! -readable -prune -o -name %s -print";
+    var cmdfmt = "find %s -name %s";
     var fp = configs[item].findpattern;
     for (var i in configs[item].locations) {
       var loc = configs[item].locations[i];
       if (!fs.existsSync(loc)) continue;
       var cmd = util.format(cmdfmt, loc, fp);
-      try {
-        var dir = cp.execSync(cmd).toString().split('\n')[0];
-        if (!dir) continue;
-        return path.dirname(dir)
-      } catch (e) {
-        // console.log('not found in %s', loc);
-      }
+      var dir = doScript(cmd, true);
+      if (!dir) continue;
+      return path.dirname(dir.split('\n')[0]);
     }
   }
 }
 
 var paths = {};
-
-// try the easy way first: use pkg-config and libopenzwave.pc
 Object.keys(configs).forEach(function(item) {
-  var ret = getConfigItem(item);
-  // or fallback to the default value if automatic scan fails
-  paths[item] = ret || configs[item].default;
+  paths[item] = getConfigItem(item);
 });
 
 //console.log('=====RESULTS=====');