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authorMichael Krelin <hacker@klever.net>2005-01-29 21:21:05 (UTC)
committer Michael Krelin <hacker@klever.net>2005-01-29 21:21:05 (UTC)
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+#ifndef __SITECING_UTIL_H
+#define __SITECING_UTIL_H
+
+#include <ostream>
+#include <string>
+#include "sitecing/acomponent.h"
+
+/**
+ * @file
+ * @brief more or less non-internal utility classes and functions.
+ */
+
+namespace sitecing {
+ using namespace std;
+
+ /**
+ * the html_escape options enumeration.
+ */
+ enum html_escape_options {
+ /**
+ * Turn spaces into &nbsp;
+ */
+ html_escape_nbsp = 0x0001,
+ /**
+ * Turn newlines into <br/> or <br>.
+ */
+ html_escape_br = 0x0002,
+ /**
+ * Turn quotes to &quot;
+ */
+ html_escape_quot = 0x0004,
+ /**
+ * Do not put '/' into <br/> consruct.
+ */
+ html_escape_br_noslash = 0x0008
+ };
+ /**
+ * Escape string suitable for html output.
+ * @param str the string.
+ * @param flags options.
+ * @return the string escaped.
+ * @see html_escape_options
+ */
+ string html_escape(const string& str,int flags=html_escape_br);
+
+ /**
+ * The output string checkpoint object, letting one to rollback output.
+ */
+ class checkpoint {
+ public:
+ /**
+ * The object's death will enumeration.
+ */
+ enum will_t {
+ /**
+ * The stream is to be rolled back at object destruction.
+ */
+ will_rollback,
+ /**
+ * The stream is not to be rolled back at object destruction.
+ */
+ will_commit,
+ /**
+ * The object will die intestate. What's the point then?
+ */
+ will_intestate
+ };
+ /**
+ * The output stream in question.
+ */
+ ostream* stream;
+ /**
+ * The point at which objhect was created.
+ */
+ ostream::pos_type point;
+ /**
+ * The last will.
+ */
+ will_t last_will;
+
+ /**
+ * @param s reference to the stream.
+ * @param lw the last will.
+ */
+ checkpoint(ostream& s, will_t lw=will_rollback)
+ : stream(&s), last_will(lw) { set(); }
+ /**
+ * @param s pointer to the stream.
+ * @param lw the last will.
+ */
+ checkpoint(ostream* s, will_t lw=will_rollback)
+ : stream(s), last_will(lw) { set(); }
+ /**
+ * @param s reference to the sitecing interface where to get output
+ * stream from.
+ * @param lw the last will.
+ */
+ checkpoint(sitecing_interface& s, will_t lw=will_rollback)
+ : stream(s.out), last_will(lw) { set(); }
+ /**
+ * @param s pointer to the sitecing interface where to get output
+ * stream from.
+ * @param lw the last will.
+ */
+ checkpoint(sitecing_interface* s, will_t lw=will_rollback)
+ : stream(s->out), last_will(lw) { set(); }
+ /**
+ * @param c reference to the component from which the output stream
+ * is obtained.
+ * @param lw the last will.
+ */
+ checkpoint(acomponent& c, will_t lw=will_rollback)
+ : stream(c.__SCIF->out), last_will(lw) { set(); }
+ /**
+ * @param c pointer to the component from which the output stream is
+ * obtained.
+ * @param lw the last will.
+ */
+ checkpoint(acomponent* c, will_t lw=will_rollback)
+ : stream(c->__SCIF->out), last_will(lw) { set(); }
+ ~checkpoint() {
+ if(last_will==will_rollback)
+ rollback();
+ }
+
+ /**
+ * Set the possible rolback point to the current position in stream.
+ */
+ void set();
+ /**
+ * Make or change will.
+ */
+ void make_will(will_t lw);
+ /**
+ * Rollback the output made so far. In case of rollback will
+ * change to intestate.
+ */
+ void rollback();
+ /**
+ * Commit output so far. In case of rollback will, change to
+ * intestate.
+ */
+ void commit();
+ };
+
+}
+
+#endif /* __SITECING_UTIL_H */