mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-24 13:21:05 +00:00
112 lines
3.0 KiB
C++
112 lines
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
/*
|
|
|
|
Implementations for a bunch of useful RDF utility routines. Many of
|
|
these will eventually be exported outside of RDF.DLL via the
|
|
nsIRDFService interface.
|
|
|
|
TO DO
|
|
|
|
1) Make this so that it doesn't permanently leak the RDF service
|
|
object.
|
|
|
|
2) Make container functions thread-safe. They currently don't ensure
|
|
that the RDF:nextVal property is maintained safely.
|
|
|
|
*/
|
|
|
|
#include "nsCOMPtr.h"
|
|
#include "nsIRDFDataSource.h"
|
|
#include "nsIRDFNode.h"
|
|
#include "nsIRDFService.h"
|
|
#include "nsIServiceManager.h"
|
|
#include "nsIURL.h"
|
|
#include "nsIIOService.h"
|
|
#include "nsIURL.h"
|
|
#include "nsRDFCID.h"
|
|
#include "nsString.h"
|
|
#include "nsXPIDLString.h"
|
|
#include "nsUnicharUtils.h"
|
|
#include "rdfutil.h"
|
|
#include "prtime.h"
|
|
|
|
////////////////////////////////////////////////////////////////////////
|
|
|
|
nsresult
|
|
rdf_MakeRelativeRef(const nsCSubstring& aBaseURI, nsCString& aURI)
|
|
{
|
|
// This implementation is extremely simple: e.g., it can't compute
|
|
// relative paths, or anything fancy like that. If the context URI
|
|
// is not a prefix of the URI in question, we'll just bail.
|
|
uint32_t prefixLen = aBaseURI.Length();
|
|
if (prefixLen != 0 && StringBeginsWith(aURI, aBaseURI)) {
|
|
if (prefixLen < aURI.Length() && aURI.CharAt(prefixLen) == '/')
|
|
++prefixLen; // chop the leading slash so it's not `absolute'
|
|
|
|
aURI.Cut(0, prefixLen);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
rdf_FormatDate(PRTime aTime, nsACString &aResult)
|
|
{
|
|
// Outputs Unixish date in GMT plus usecs; e.g.,
|
|
// Wed Jan 9 19:15:13 2002 +002441
|
|
//
|
|
PRExplodedTime t;
|
|
PR_ExplodeTime(aTime, PR_GMTParameters, &t);
|
|
|
|
char buf[256];
|
|
PR_FormatTimeUSEnglish(buf, sizeof buf, "%a %b %d %H:%M:%S %Y", &t);
|
|
aResult.Append(buf);
|
|
|
|
// usecs
|
|
aResult.AppendLiteral(" +");
|
|
int32_t usec = t.tm_usec;
|
|
for (int32_t digit = 100000; digit > 1; digit /= 10) {
|
|
aResult.Append(char('0' + (usec / digit)));
|
|
usec %= digit;
|
|
}
|
|
aResult.Append(char('0' + usec));
|
|
}
|
|
|
|
PRTime
|
|
rdf_ParseDate(const nsACString &aTime)
|
|
{
|
|
PRTime t;
|
|
PR_ParseTimeString(PromiseFlatCString(aTime).get(), true, &t);
|
|
|
|
int32_t usec = 0;
|
|
|
|
nsACString::const_iterator begin, digit, end;
|
|
aTime.BeginReading(begin);
|
|
aTime.EndReading(end);
|
|
|
|
// Walk backwards until we find a `+', run out of string, or a
|
|
// non-numeric character.
|
|
digit = end;
|
|
while (--digit != begin && *digit != '+') {
|
|
if (*digit < '0' || *digit > '9')
|
|
break;
|
|
}
|
|
|
|
if (digit != begin && *digit == '+') {
|
|
// There's a usec field specified (or, at least, something
|
|
// that looks close enough. Parse it, and add it to the time.
|
|
while (++digit != end) {
|
|
usec *= 10;
|
|
usec += *digit - '0';
|
|
}
|
|
|
|
t += usec;
|
|
}
|
|
|
|
return t;
|
|
}
|