--- a
+++ b/src/utils/conftree.h
@@ -0,0 +1,151 @@
+#ifndef _CONFTREE_H_
+#define _CONFTREE_H_
+/**
+ * A simple configuration file implementation.
+ *
+ * Configuration files have lines like 'name = value', and/or like '[subkey]'
+ *
+ * Lines like '[subkeyname]' in the file define subsections, with independant
+ * configuration namespaces.
+ *
+ * Whitespace around name and value is insignificant.
+ *
+ * Values can be queried for, or set. (the file is then rewritten).
+ * The names are case-sensitive but don't count on it either.
+ * Any line without a '=' is discarded when rewriting the file.
+ * All 'set' calls currently cause an immediate file rewrite.
+ */
+#include <string>
+#include <map>
+#include <list>
+// rh7.3 likes iostream better...
+#if defined(__GNUC__) && __GNUC__ < 3
+#include <iostream>
+#else
+#include <istream>
+#endif
+
+#ifndef NO_NAMESPACES
+using std::string;
+using std::list;
+using std::map;
+#endif // NO_NAMESPACES
+
+/**
+ * Manages a simple configuration file with subsections.
+ */
+class ConfSimple {
+ public:
+ enum StatusCode {STATUS_ERROR=0, STATUS_RO=1, STATUS_RW=2};
+ private:
+ string filename; // set if we're working with a file
+ string *data; // set if we're working with an in-memory string
+ map<string, map<string, string> > submaps;
+ StatusCode status;
+ void parseinput(std::istream &input);
+
+ public:
+ /**
+ * Build the object by reading content from file.
+ */
+ ConfSimple(const char *fname, int readonly = 0);
+
+ /**
+ * Build the object by reading content from a string
+ */
+ ConfSimple(string *data, int readonly = 0);
+
+ virtual ~ConfSimple() {};
+
+ /**
+ * Get value for named parameter, from specified subsection (looks in
+ * global space if sk is empty).
+ * @return 0 if name not found, 1 else
+ */
+ virtual int get(const std::string &name, string &value, const string &sk);
+ virtual int get(const std::string &name, string &value) {
+ return get(name, value, string(""));
+ }
+ /**
+ * See comments for std::string variant
+ * @return 0 if name not found, const C string else
+ */
+ virtual const char *get(const char *name, const char *sk = 0);
+
+ /**
+ * Set value for named parameter in specified subsection (or global)
+ * @return 0 for error, 1 else
+ */
+ int set(const std::string &nm, const std::string &val, const string &sk);
+ int set(const char *name, const char *value, const char *sk = 0);
+
+ virtual StatusCode getStatus();
+
+ /**
+ * Walk the configuration values, calling function for each.
+ * The function is called with a null nm when changing subsections (the
+ * value is then the new subsection name)
+ * @return WALK_STOP when/if the callback returns WALK_STOP,
+ * WALK_CONTINUE else (got to end of config)
+ */
+ enum WalkerCode {WALK_STOP, WALK_CONTINUE};
+ virtual WalkerCode sortwalk(WalkerCode
+ (*wlkr)(void *cldata, const char *nm,
+ const char *val),
+ void *clidata);
+ void list();
+ /**
+ * Return all key names:
+ */
+ std::list<string> getKeys();
+};
+
+/**
+ * This is a configuration class which attaches tree-like signification to the
+ * submap names.
+ *
+ * If a given variable is not found in the specified section, it will be
+ * looked up the tree of section names, and in the global space.
+ *
+ * submap names should be '/' separated paths (ie: /sub1/sub2). No checking
+ * is done, but else the class adds no functionality to ConfSimple.
+ *
+ * NOTE: contrary to common behaviour, the global or root space is NOT
+ * designated by '/' but by '' (empty subkey). A '/' subkey will not
+ * be searched at all.
+ */
+class ConfTree : public ConfSimple {
+
+ /* Dont want this to be accessible: keep only the string-based one */
+ virtual const char *get(const char *, const char *) {return 0;}
+
+ public:
+ /**
+ * Build the object by reading content from file.
+ */
+ ConfTree(const char *fname, int readonly = 0)
+ : ConfSimple(fname, readonly) {}
+ virtual ~ConfTree() {};
+
+ /**
+ * Get value for named parameter, from specified subsection, or its
+ * parents.
+ * @return 0 if name not found, 1 else
+ */
+ virtual int get(const std::string &name, string &value, const string &sk);
+
+ virtual int get(const char *name, string &value, const char *sk) {
+ return get(string(name), value, sk ? string(sk) : string(""));
+ }
+ /**
+ * Parse input stream into vector of strings.
+ *
+ * Token delimiter is " \t" except inside dquotes. dquote inside
+ * dquotes can be escaped with \ etc...
+ */
+ static bool stringToStrings(const string &s, std::list<string> &tokens);
+ static bool stringToBool(const string &s);
+};
+
+
+#endif /*_CONFTREE_H_ */