зеркало из https://github.com/mozilla/pjs.git
bug 116149: simple name-value pair DB
r=yokoyama@netscape.com, sr=brendan@mozilla.org
This commit is contained in:
bstell%ix.netcom.com
Родитель
0839760747
Коммит
b3e9de2a76
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@ -41,6 +41,7 @@ EXPORTS = \
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nsPoint.h \
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nsSize.h \
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nsMargin.h \
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nsNameValuePairDB.h \
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nsTransform2D.h \
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nsIRenderingContext.h \
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nsRenderingContextImpl.h \
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@ -93,6 +93,7 @@ CPPSRCS = \
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nsDeviceContext.cpp \
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nsFont.cpp \
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nsFontList.cpp \
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nsNameValuePairDB.cpp \
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nsRenderingContextImpl.cpp \
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nsRect.cpp \
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nsTransform2D.cpp \
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@ -0,0 +1,547 @@
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Brian Stell <bstell@ix.netcom.com>
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*
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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||||
* in which case the provisions of the GPL or the LGPL are applicable instead
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||||
* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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||||
* decision by deleting the provisions above and replace them with the notice
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||||
* and other provisions required by the GPL or the LGPL. If you do not delete
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||||
* the provisions above, a recipient may use your version of this file under
|
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nspr.h"
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#include "nsCOMPtr.h"
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#include "nsAppDirectoryServiceDefs.h"
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#include "nsIFileSpec.h"
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#include "nsNameValuePairDB.h"
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#include "nsLocalFileUnix.h"
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#define NVPDB_VERSION_MAJOR 1
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#define NVPDB_VERSION_MINOR 0
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#define NVPDB_VERSION_MAINTENANCE 0
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#ifdef DEBUG
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# define NVPDB_PRINTF(x) \
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PR_BEGIN_MACRO \
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printf x ; \
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printf(", %s %d\n", __FILE__, __LINE__); \
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PR_END_MACRO
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#else
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# define NVPDB_PRINTF(x)
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#endif
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PRBool
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nsNameValuePairDB::CheckHeader()
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{
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const char *name, *value;
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int num, major, minor, maintenance;
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PRBool foundVersion = PR_FALSE;
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if (!mFile)
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return PR_FALSE;
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if (fseek(mFile, 0L, SEEK_SET) != 0)
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return PR_FALSE;
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mCurrentGroup = 0;
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mAtEndOfGroup = PR_FALSE;
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while (GetNextElement(&name, &value) > 0) {
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if (*name == '\0') // ignore comments
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continue;
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if (strcmp(name, "Version")==0) {
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foundVersion = PR_TRUE;
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num = sscanf(value, "%d.%d.%d", &major, &minor, &maintenance);
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if (num != 3) {
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NVPDB_PRINTF(("failed to parse version number (%s)", value));
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return PR_FALSE;
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}
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// NVPDB_VERSION_MAJOR
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// It is presumed that major versions are not backwards compatibile.
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if (major != NVPDB_VERSION_MAJOR) {
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NVPDB_PRINTF(("version major %d != %d", major, NVPDB_VERSION_MAJOR));
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return PR_FALSE;
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}
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// NVPDB_VERSION_MINOR
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// It is presumed that minor versions are backwards compatible
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// but will have additional features.
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// Put any tests related to minor versions here.
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// NVPDB_VERSION_MAINTENANCE
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// It is presumed that maintenance versions are backwards compatible,
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// have no new features, but can have bug fixes.
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// Put any tests related to maintenance versions here.
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mMajorNum = major;
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mMinorNum = minor;
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mMaintenanceNum = maintenance;
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}
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}
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return foundVersion;
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}
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//
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// Re-get an element. Used if the element is bigger than
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// the buffer that was first passed in
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//
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// PRInt32 GetCurrentElement(const char** aName, const char** aValue,
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// char *aBuffer, PRUint32 aBufferLen);
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//
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// to implement this the GetNextElement methods need to save
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// the file position so this routine can seek backward to it.
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//
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PRInt32
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nsNameValuePairDB::GetNextElement(const char** aName, const char** aValue)
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{
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return GetNextElement(aName, aValue, mBuf, sizeof(mBuf));
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}
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//
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// Get the next element
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//
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// returns 1 if complete element read
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// return 0 on end of file
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// returns a negative number on error
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// if error < -NVPDB_MIN_BUFLEN
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// then the value is the negative of the needed buffer len
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//
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//
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PRInt32
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nsNameValuePairDB::GetNextElement(const char** aName, const char** aValue,
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char *aBuffer, PRUint32 aBufferLen)
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{
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char *line, *name, *value;
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unsigned int num;
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int len;
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unsigned int groupNum;
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*aName = "";
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*aValue = "";
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if (aBufferLen < NVPDB_MIN_BUFLEN) {
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return NVPDB_BUFFER_TOO_SMALL;
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}
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if (mAtEndOfGroup) {
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return NVPDB_END_OF_GROUP;
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}
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//
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// Get a line
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//
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line = fgets(aBuffer, aBufferLen, mFile);
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if (!line) {
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if (feof(mFile)) { // end of file
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mAtEndOfGroup = PR_TRUE;
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mAtEndOfCatalog = PR_TRUE;
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return NVPDB_END_OF_FILE;
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}
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return NVPDB_FILE_IO_ERROR;
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}
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//
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// Check we got a complete line
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//
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len = strlen(line);
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NS_ASSERTION(len!=0, "an empty string is invalid");
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if (len == 0)
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return NVPDB_GARBLED_LINE;
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if (line[len-1] != '\n') {
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len++; // space for the line terminator
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while (1) {
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int val = getc(mFile);
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if (val == EOF)
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return -len;
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len++;
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if (val == '\n')
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return -len;
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}
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}
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len--;
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line[len] = '\0';
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//NVPDB_PRINTF(("line = (%s)", line));
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//
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// Check the group number
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//
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num = sscanf(line, "%u", &groupNum);
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if ((num != 1) || (groupNum != (unsigned)mCurrentGroup))
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return NVPDB_END_OF_GROUP;
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//
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// Get the name
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//
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name = strchr(line, ' ');
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if ((!name) || (name[1]=='\0'))
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return NVPDB_GARBLED_LINE;
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name++;
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//
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// If it is a comment
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// return a blank name (strlen(*aName)==0)
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// return the comment in the value field
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//
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if (*name == '#') {
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*aValue = name;
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return 1;
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}
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//
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// Get the value
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//
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value = strchr(name, '=');
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if (!value)
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return NVPDB_GARBLED_LINE;
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*value = '\0';
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value++;
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//
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// Check for end of group
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//
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if (strcmp(name,"end")==0) {
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mAtEndOfGroup = PR_TRUE;
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return NVPDB_END_OF_GROUP;
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}
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//
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// Got the name and value
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//
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*aName = name;
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*aValue = value;
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return 1;
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}
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PRBool
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nsNameValuePairDB::GetNextGroup(const char** aType)
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{
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return GetNextGroup(aType, nsnull, 0);
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}
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PRBool
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nsNameValuePairDB::GetNextGroup(const char** aType, const char* aName)
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{
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return GetNextGroup(aType, aName, strlen(aName));
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}
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PRBool
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nsNameValuePairDB::GetNextGroup(const char** aType, const char* aName, int aLen)
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{
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const char *name, *value;
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long pos = 0;
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*aType = "";
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if (mAtEndOfCatalog)
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return PR_FALSE;
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//
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// Move to end of current Group
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//
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while (GetNextElement(&name, &value) > 0)
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continue;
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mCurrentGroup++;
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mAtEndOfGroup = PR_FALSE;
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// save current pos in case this in not the desired type
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// and we need to backup
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if (aName)
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pos = ftell(mFile);
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// check if there are more Groups
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if (GetNextElement(&name, &value) <= 0) {
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mAtEndOfGroup = PR_TRUE;
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mAtEndOfCatalog = PR_TRUE;
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return PR_FALSE;
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}
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if (strcmp(name,"begin"))
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goto GetNext_Error;
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// check if this is the desired type
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if (aName) {
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if (strncmp(value,aName,aLen)) {
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fseek(mFile, pos, SEEK_SET);
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mCurrentGroup--;
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mAtEndOfGroup = PR_TRUE;
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return PR_FALSE;
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}
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}
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*aType = value;
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return PR_TRUE;
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GetNext_Error:
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mError = PR_TRUE;
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NVPDB_PRINTF(("GetNext_Error"));
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return PR_FALSE;
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}
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nsNameValuePairDB::nsNameValuePairDB()
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{
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mFile = nsnull;
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mBuf[0] = '\0';
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mMajorNum = 0;
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mMinorNum = 0;
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mMaintenanceNum = 0;
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mCurrentGroup = 0;
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mAtEndOfGroup = PR_FALSE;
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mAtEndOfCatalog = PR_FALSE;
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mError = PR_FALSE;
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}
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nsNameValuePairDB::~nsNameValuePairDB()
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{
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if (mFile) {
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fclose(mFile);
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mFile = nsnull;
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}
|
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}
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PRBool
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nsNameValuePairDB::OpenForRead(const nsACString & aCatalogName)
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{
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nsresult result;
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nsCOMPtr<nsILocalFile> local_file = do_CreateInstance(NS_LOCAL_FILE_CONTRACTID,
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&result);
|
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if (NS_FAILED(result))
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goto error_return;
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|
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local_file->InitWithPath(PromiseFlatCString(aCatalogName).get());
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local_file->OpenANSIFileDesc("r", &mFile);
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if (mFile && CheckHeader())
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return PR_TRUE;
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error_return:
|
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mError = PR_TRUE;
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NVPDB_PRINTF(("OpenForRead error"));
|
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return PR_FALSE;
|
||||
}
|
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|
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PRBool
|
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nsNameValuePairDB::OpenTmpForWrite(const nsACString& aCatalogName)
|
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{
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nsCAutoString name(aCatalogName);
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name.Append(".tmp");
|
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|
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nsresult result;
|
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nsCOMPtr<nsILocalFile> local_file = do_CreateInstance(NS_LOCAL_FILE_CONTRACTID,
|
||||
&result);
|
||||
if (NS_FAILED(result))
|
||||
return PR_FALSE;
|
||||
local_file->InitWithPath(name.get());
|
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local_file->OpenANSIFileDesc("w+", &mFile);
|
||||
if (mFile == nsnull)
|
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return PR_FALSE;
|
||||
|
||||
// Write the header
|
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mAtEndOfGroup = PR_TRUE;
|
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mCurrentGroup = -1;
|
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PutStartGroup("Header");
|
||||
char buf[64];
|
||||
PutElement("", "########################################");
|
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PutElement("", "# #");
|
||||
PutElement("", "# Name Value Pair DB #");
|
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PutElement("", "# #");
|
||||
PutElement("", "# This is a program generated file #");
|
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PutElement("", "# #");
|
||||
PutElement("", "# Do not edit #");
|
||||
PutElement("", "# #");
|
||||
PutElement("", "########################################");
|
||||
PR_snprintf(buf, sizeof(buf), "%d.%d.%d", NVPDB_VERSION_MAJOR,
|
||||
NVPDB_VERSION_MINOR, NVPDB_VERSION_MAINTENANCE);
|
||||
PutElement("Version", buf);
|
||||
PutEndGroup("Header");
|
||||
|
||||
return PR_TRUE;
|
||||
}
|
||||
|
||||
PRBool
|
||||
nsNameValuePairDB::PutElement(const char* aName, const char* aValue)
|
||||
{
|
||||
if (mAtEndOfGroup) {
|
||||
mError = PR_TRUE;
|
||||
NVPDB_PRINTF(("PutElement_Error"));
|
||||
return PR_FALSE;
|
||||
}
|
||||
|
||||
if ((!*aName) && (*aValue == '#'))
|
||||
fprintf(mFile, "%u %s\n", mCurrentGroup, aValue);
|
||||
else
|
||||
fprintf(mFile, "%u %s=%s\n", mCurrentGroup, aName, aValue);
|
||||
#ifdef DEBUG
|
||||
fflush(mFile);
|
||||
#endif
|
||||
return PR_TRUE;
|
||||
}
|
||||
|
||||
PRBool
|
||||
nsNameValuePairDB::PutEndGroup(const char* aType)
|
||||
{
|
||||
if (mAtEndOfGroup) {
|
||||
mError = PR_TRUE;
|
||||
NVPDB_PRINTF(("PutEndGroup_Error"));
|
||||
return PR_FALSE;
|
||||
}
|
||||
|
||||
mAtEndOfGroup = PR_TRUE;
|
||||
fprintf(mFile, "%u end=%s\n", mCurrentGroup, aType);
|
||||
#ifdef DEBUG
|
||||
fflush(mFile);
|
||||
#endif
|
||||
return PR_TRUE;
|
||||
}
|
||||
|
||||
PRBool
|
||||
nsNameValuePairDB::PutStartGroup(const char* aType)
|
||||
{
|
||||
if (!mAtEndOfGroup) {
|
||||
mError = PR_TRUE;
|
||||
NVPDB_PRINTF(("PutStartGroup_Error"));
|
||||
#ifdef DEBUG
|
||||
fflush(mFile);
|
||||
#endif
|
||||
return PR_FALSE;
|
||||
}
|
||||
|
||||
mAtEndOfGroup = PR_FALSE;
|
||||
mCurrentGroup++;
|
||||
fprintf(mFile, "%u begin=%s\n", mCurrentGroup, aType);
|
||||
#ifdef DEBUG
|
||||
fflush(mFile);
|
||||
#endif
|
||||
return PR_TRUE;
|
||||
}
|
||||
|
||||
PRBool
|
||||
nsNameValuePairDB::RenameTmp(const char* aCatalogName)
|
||||
{
|
||||
nsresult rv;
|
||||
nsCOMPtr<nsILocalFile> dir;
|
||||
PRBool exists = PR_FALSE;
|
||||
nsCAutoString old_name(aCatalogName);
|
||||
nsDependentCString current_name(aCatalogName);
|
||||
nsCAutoString tmp_name(aCatalogName);
|
||||
nsCAutoString old_name_tail;
|
||||
nsCAutoString current_name_tail;
|
||||
nsCOMPtr<nsILocalFile> old_file;
|
||||
nsCOMPtr<nsILocalFile> current_file;
|
||||
nsCOMPtr<nsILocalFile> tmp_file;
|
||||
nsCAutoString parent_dir;
|
||||
nsXPIDLCString parent_path;
|
||||
nsXPIDLCString cur_path;
|
||||
|
||||
//
|
||||
// Split the parent dir and file name
|
||||
//
|
||||
PRInt32 slash = 0, last_slash = -1;
|
||||
nsCAutoString fontDirName(aCatalogName);
|
||||
// RFindChar not coded so do it by hand
|
||||
while ((slash=fontDirName.FindChar('/', slash))>=0) {
|
||||
last_slash = slash;
|
||||
slash++;
|
||||
}
|
||||
if (last_slash < 0)
|
||||
goto Rename_Error;
|
||||
|
||||
fontDirName.Left(parent_dir, last_slash);
|
||||
dir = do_CreateInstance(NS_LOCAL_FILE_CONTRACTID, &rv);
|
||||
if (NS_FAILED(rv))
|
||||
goto Rename_Error;
|
||||
dir->InitWithPath(parent_dir.get());
|
||||
dir->GetPath(getter_Copies(parent_path));
|
||||
|
||||
if (!mAtEndOfGroup || mError)
|
||||
goto Rename_Error;
|
||||
|
||||
//
|
||||
// check that we have a tmp copy
|
||||
//
|
||||
tmp_name.Append(".tmp");
|
||||
tmp_file = do_CreateInstance(NS_LOCAL_FILE_CONTRACTID, &rv);
|
||||
if (NS_FAILED(rv))
|
||||
goto Rename_Error;
|
||||
tmp_file->InitWithPath(tmp_name.get());
|
||||
tmp_file->Exists(&exists);
|
||||
if (!exists)
|
||||
goto Rename_Error;
|
||||
|
||||
//
|
||||
// get rid of any old copy
|
||||
//
|
||||
old_name.Append(".old");
|
||||
old_file = do_CreateInstance(NS_LOCAL_FILE_CONTRACTID, &rv);
|
||||
if (NS_FAILED(rv))
|
||||
goto Rename_Error;
|
||||
old_file->InitWithPath(old_name.get());
|
||||
|
||||
//
|
||||
// Check we have a current copy
|
||||
//
|
||||
current_file = do_CreateInstance(NS_LOCAL_FILE_CONTRACTID, &rv);
|
||||
if (NS_FAILED(rv))
|
||||
goto Rename_Error;
|
||||
current_file->InitWithPath(current_name.get());
|
||||
current_file->Exists(&exists);
|
||||
if (exists) {
|
||||
//
|
||||
// Rename the current copy to old
|
||||
//
|
||||
current_file->GetPath(getter_Copies(cur_path));
|
||||
old_name.Right(old_name_tail, old_name.Length() - last_slash - 1);
|
||||
rv = current_file->MoveTo(dir, old_name_tail.get());
|
||||
if (NS_FAILED(rv))
|
||||
goto Rename_Error;
|
||||
}
|
||||
|
||||
//
|
||||
// Rename the tmp to current
|
||||
//
|
||||
current_name.Right(current_name_tail, current_name.Length() - last_slash - 1);
|
||||
rv = tmp_file->MoveTo(dir, current_name_tail.get());
|
||||
if (NS_FAILED(rv))
|
||||
goto Rename_Error;
|
||||
|
||||
//
|
||||
// remove the previous copy
|
||||
//
|
||||
if (exists) {
|
||||
old_file->Remove(PR_FALSE);
|
||||
}
|
||||
|
||||
return PR_TRUE;
|
||||
|
||||
Rename_Error:
|
||||
mError = PR_TRUE;
|
||||
NVPDB_PRINTF(("Rename_Error"));
|
||||
return PR_FALSE;
|
||||
}
|
||||
|
||||
|
|
@ -0,0 +1,547 @@
|
|||
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
||||
/* ***** BEGIN LICENSE BLOCK *****
|
||||
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
|
||||
*
|
||||
* The contents of this file are subject to the Netscape Public License
|
||||
* Version 1.1 (the "License"); you may not use this file except in
|
||||
* compliance with the License. You may obtain a copy of the License at
|
||||
* http://www.mozilla.org/NPL/
|
||||
*
|
||||
* Software distributed under the License is distributed on an "AS IS" basis,
|
||||
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
||||
* for the specific language governing rights and limitations under the
|
||||
* License.
|
||||
*
|
||||
* The Original Code is mozilla.org code.
|
||||
*
|
||||
* The Initial Developer of the Original Code is
|
||||
* Netscape Communications Corporation.
|
||||
* Portions created by the Initial Developer are Copyright (C) 1998
|
||||
* the Initial Developer. All Rights Reserved.
|
||||
*
|
||||
* Contributor(s):
|
||||
* Brian Stell <bstell@ix.netcom.com>
|
||||
*
|
||||
*
|
||||
* Alternatively, the contents of this file may be used under the terms of
|
||||
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
||||
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
||||
* in which case the provisions of the GPL or the LGPL are applicable instead
|
||||
* of those above. If you wish to allow use of your version of this file only
|
||||
* under the terms of either the GPL or the LGPL, and not to allow others to
|
||||
* use your version of this file under the terms of the NPL, indicate your
|
||||
* decision by deleting the provisions above and replace them with the notice
|
||||
* and other provisions required by the GPL or the LGPL. If you do not delete
|
||||
* the provisions above, a recipient may use your version of this file under
|
||||
* the terms of any one of the NPL, the GPL or the LGPL.
|
||||
*
|
||||
* ***** END LICENSE BLOCK ***** */
|
||||
|
||||
#include "nspr.h"
|
||||
#include "nsCOMPtr.h"
|
||||
#include "nsAppDirectoryServiceDefs.h"
|
||||
#include "nsIFileSpec.h"
|
||||
#include "nsNameValuePairDB.h"
|
||||
#include "nsLocalFileUnix.h"
|
||||
|
||||
#define NVPDB_VERSION_MAJOR 1
|
||||
#define NVPDB_VERSION_MINOR 0
|
||||
#define NVPDB_VERSION_MAINTENANCE 0
|
||||
|
||||
#ifdef DEBUG
|
||||
# define NVPDB_PRINTF(x) \
|
||||
PR_BEGIN_MACRO \
|
||||
printf x ; \
|
||||
printf(", %s %d\n", __FILE__, __LINE__); \
|
||||
PR_END_MACRO
|
||||
#else
|
||||
# define NVPDB_PRINTF(x)
|
||||
#endif
|
||||
|
||||
PRBool
|
||||
nsNameValuePairDB::CheckHeader()
|
||||
{
|
||||
const char *name, *value;
|
||||
int num, major, minor, maintenance;
|
||||
PRBool foundVersion = PR_FALSE;
|
||||
|
||||
if (!mFile)
|
||||
return PR_FALSE;
|
||||
|
||||
if (fseek(mFile, 0L, SEEK_SET) != 0)
|
||||
return PR_FALSE;
|
||||
mCurrentGroup = 0;
|
||||
mAtEndOfGroup = PR_FALSE;
|
||||
while (GetNextElement(&name, &value) > 0) {
|
||||
if (*name == '\0') // ignore comments
|
||||
continue;
|
||||
if (strcmp(name, "Version")==0) {
|
||||
foundVersion = PR_TRUE;
|
||||
num = sscanf(value, "%d.%d.%d", &major, &minor, &maintenance);
|
||||
if (num != 3) {
|
||||
NVPDB_PRINTF(("failed to parse version number (%s)", value));
|
||||
return PR_FALSE;
|
||||
}
|
||||
|
||||
// NVPDB_VERSION_MAJOR
|
||||
// It is presumed that major versions are not backwards compatibile.
|
||||
if (major != NVPDB_VERSION_MAJOR) {
|
||||
NVPDB_PRINTF(("version major %d != %d", major, NVPDB_VERSION_MAJOR));
|
||||
return PR_FALSE;
|
||||
}
|
||||
|
||||
// NVPDB_VERSION_MINOR
|
||||
// It is presumed that minor versions are backwards compatible
|
||||
// but will have additional features.
|
||||
// Put any tests related to minor versions here.
|
||||
|
||||
// NVPDB_VERSION_MAINTENANCE
|
||||
// It is presumed that maintenance versions are backwards compatible,
|
||||
// have no new features, but can have bug fixes.
|
||||
// Put any tests related to maintenance versions here.
|
||||
|
||||
mMajorNum = major;
|
||||
mMinorNum = minor;
|
||||
mMaintenanceNum = maintenance;
|
||||
}
|
||||
}
|
||||
|
||||
return foundVersion;
|
||||
}
|
||||
|
||||
//
|
||||
// Re-get an element. Used if the element is bigger than
|
||||
// the buffer that was first passed in
|
||||
//
|
||||
// PRInt32 GetCurrentElement(const char** aName, const char** aValue,
|
||||
// char *aBuffer, PRUint32 aBufferLen);
|
||||
//
|
||||
// to implement this the GetNextElement methods need to save
|
||||
// the file position so this routine can seek backward to it.
|
||||
//
|
||||
|
||||
PRInt32
|
||||
nsNameValuePairDB::GetNextElement(const char** aName, const char** aValue)
|
||||
{
|
||||
return GetNextElement(aName, aValue, mBuf, sizeof(mBuf));
|
||||
}
|
||||
|
||||
//
|
||||
// Get the next element
|
||||
//
|
||||
// returns 1 if complete element read
|
||||
// return 0 on end of file
|
||||
// returns a negative number on error
|
||||
// if error < -NVPDB_MIN_BUFLEN
|
||||
// then the value is the negative of the needed buffer len
|
||||
//
|
||||
//
|
||||
PRInt32
|
||||
nsNameValuePairDB::GetNextElement(const char** aName, const char** aValue,
|
||||
char *aBuffer, PRUint32 aBufferLen)
|
||||
{
|
||||
char *line, *name, *value;
|
||||
unsigned int num;
|
||||
int len;
|
||||
unsigned int groupNum;
|
||||
|
||||
*aName = "";
|
||||
*aValue = "";
|
||||
|
||||
if (aBufferLen < NVPDB_MIN_BUFLEN) {
|
||||
return NVPDB_BUFFER_TOO_SMALL;
|
||||
}
|
||||
|
||||
if (mAtEndOfGroup) {
|
||||
return NVPDB_END_OF_GROUP;
|
||||
}
|
||||
|
||||
//
|
||||
// Get a line
|
||||
//
|
||||
line = fgets(aBuffer, aBufferLen, mFile);
|
||||
if (!line) {
|
||||
if (feof(mFile)) { // end of file
|
||||
mAtEndOfGroup = PR_TRUE;
|
||||
mAtEndOfCatalog = PR_TRUE;
|
||||
return NVPDB_END_OF_FILE;
|
||||
}
|
||||
return NVPDB_FILE_IO_ERROR;
|
||||
}
|
||||
|
||||
//
|
||||
// Check we got a complete line
|
||||
//
|
||||
len = strlen(line);
|
||||
NS_ASSERTION(len!=0, "an empty string is invalid");
|
||||
if (len == 0)
|
||||
return NVPDB_GARBLED_LINE;
|
||||
if (line[len-1] != '\n') {
|
||||
len++; // space for the line terminator
|
||||
while (1) {
|
||||
int val = getc(mFile);
|
||||
if (val == EOF)
|
||||
return -len;
|
||||
len++;
|
||||
if (val == '\n')
|
||||
return -len;
|
||||
}
|
||||
}
|
||||
len--;
|
||||
line[len] = '\0';
|
||||
//NVPDB_PRINTF(("line = (%s)", line));
|
||||
|
||||
//
|
||||
// Check the group number
|
||||
//
|
||||
num = sscanf(line, "%u", &groupNum);
|
||||
if ((num != 1) || (groupNum != (unsigned)mCurrentGroup))
|
||||
return NVPDB_END_OF_GROUP;
|
||||
|
||||
//
|
||||
// Get the name
|
||||
//
|
||||
name = strchr(line, ' ');
|
||||
if ((!name) || (name[1]=='\0'))
|
||||
return NVPDB_GARBLED_LINE;
|
||||
name++;
|
||||
|
||||
//
|
||||
// If it is a comment
|
||||
// return a blank name (strlen(*aName)==0)
|
||||
// return the comment in the value field
|
||||
//
|
||||
if (*name == '#') {
|
||||
*aValue = name;
|
||||
return 1;
|
||||
}
|
||||
|
||||
//
|
||||
// Get the value
|
||||
//
|
||||
value = strchr(name, '=');
|
||||
if (!value)
|
||||
return NVPDB_GARBLED_LINE;
|
||||
*value = '\0';
|
||||
value++;
|
||||
|
||||
//
|
||||
// Check for end of group
|
||||
//
|
||||
if (strcmp(name,"end")==0) {
|
||||
mAtEndOfGroup = PR_TRUE;
|
||||
return NVPDB_END_OF_GROUP;
|
||||
}
|
||||
|
||||
//
|
||||
// Got the name and value
|
||||
//
|
||||
*aName = name;
|
||||
*aValue = value;
|
||||
return 1;
|
||||
}
|
||||
|
||||
PRBool
|
||||
nsNameValuePairDB::GetNextGroup(const char** aType)
|
||||
{
|
||||
return GetNextGroup(aType, nsnull, 0);
|
||||
}
|
||||
|
||||
PRBool
|
||||
nsNameValuePairDB::GetNextGroup(const char** aType, const char* aName)
|
||||
{
|
||||
return GetNextGroup(aType, aName, strlen(aName));
|
||||
}
|
||||
|
||||
PRBool
|
||||
nsNameValuePairDB::GetNextGroup(const char** aType, const char* aName, int aLen)
|
||||
{
|
||||
const char *name, *value;
|
||||
long pos = 0;
|
||||
|
||||
*aType = "";
|
||||
|
||||
if (mAtEndOfCatalog)
|
||||
return PR_FALSE;
|
||||
|
||||
//
|
||||
// Move to end of current Group
|
||||
//
|
||||
while (GetNextElement(&name, &value) > 0)
|
||||
continue;
|
||||
mCurrentGroup++;
|
||||
mAtEndOfGroup = PR_FALSE;
|
||||
// save current pos in case this in not the desired type
|
||||
// and we need to backup
|
||||
if (aName)
|
||||
pos = ftell(mFile);
|
||||
|
||||
// check if there are more Groups
|
||||
if (GetNextElement(&name, &value) <= 0) {
|
||||
mAtEndOfGroup = PR_TRUE;
|
||||
mAtEndOfCatalog = PR_TRUE;
|
||||
return PR_FALSE;
|
||||
}
|
||||
if (strcmp(name,"begin"))
|
||||
goto GetNext_Error;
|
||||
|
||||
// check if this is the desired type
|
||||
if (aName) {
|
||||
if (strncmp(value,aName,aLen)) {
|
||||
fseek(mFile, pos, SEEK_SET);
|
||||
mCurrentGroup--;
|
||||
mAtEndOfGroup = PR_TRUE;
|
||||
return PR_FALSE;
|
||||
}
|
||||
}
|
||||
|
||||
*aType = value;
|
||||
return PR_TRUE;
|
||||
|
||||
GetNext_Error:
|
||||
mError = PR_TRUE;
|
||||
NVPDB_PRINTF(("GetNext_Error"));
|
||||
return PR_FALSE;
|
||||
}
|
||||
|
||||
nsNameValuePairDB::nsNameValuePairDB()
|
||||
{
|
||||
mFile = nsnull;
|
||||
mBuf[0] = '\0';
|
||||
mMajorNum = 0;
|
||||
mMinorNum = 0;
|
||||
mMaintenanceNum = 0;
|
||||
mCurrentGroup = 0;
|
||||
mAtEndOfGroup = PR_FALSE;
|
||||
mAtEndOfCatalog = PR_FALSE;
|
||||
mError = PR_FALSE;
|
||||
}
|
||||
|
||||
nsNameValuePairDB::~nsNameValuePairDB()
|
||||
{
|
||||
if (mFile) {
|
||||
fclose(mFile);
|
||||
mFile = nsnull;
|
||||
}
|
||||
}
|
||||
|
||||
PRBool
|
||||
nsNameValuePairDB::OpenForRead(const nsACString & aCatalogName)
|
||||
{
|
||||
nsresult result;
|
||||
|
||||
nsCOMPtr<nsILocalFile> local_file = do_CreateInstance(NS_LOCAL_FILE_CONTRACTID,
|
||||
&result);
|
||||
if (NS_FAILED(result))
|
||||
goto error_return;
|
||||
|
||||
local_file->InitWithPath(PromiseFlatCString(aCatalogName).get());
|
||||
local_file->OpenANSIFileDesc("r", &mFile);
|
||||
if (mFile && CheckHeader())
|
||||
return PR_TRUE;
|
||||
|
||||
error_return:
|
||||
mError = PR_TRUE;
|
||||
NVPDB_PRINTF(("OpenForRead error"));
|
||||
return PR_FALSE;
|
||||
}
|
||||
|
||||
PRBool
|
||||
nsNameValuePairDB::OpenTmpForWrite(const nsACString& aCatalogName)
|
||||
{
|
||||
nsCAutoString name(aCatalogName);
|
||||
name.Append(".tmp");
|
||||
|
||||
nsresult result;
|
||||
nsCOMPtr<nsILocalFile> local_file = do_CreateInstance(NS_LOCAL_FILE_CONTRACTID,
|
||||
&result);
|
||||
if (NS_FAILED(result))
|
||||
return PR_FALSE;
|
||||
local_file->InitWithPath(name.get());
|
||||
local_file->OpenANSIFileDesc("w+", &mFile);
|
||||
if (mFile == nsnull)
|
||||
return PR_FALSE;
|
||||
|
||||
// Write the header
|
||||
mAtEndOfGroup = PR_TRUE;
|
||||
mCurrentGroup = -1;
|
||||
PutStartGroup("Header");
|
||||
char buf[64];
|
||||
PutElement("", "########################################");
|
||||
PutElement("", "# #");
|
||||
PutElement("", "# Name Value Pair DB #");
|
||||
PutElement("", "# #");
|
||||
PutElement("", "# This is a program generated file #");
|
||||
PutElement("", "# #");
|
||||
PutElement("", "# Do not edit #");
|
||||
PutElement("", "# #");
|
||||
PutElement("", "########################################");
|
||||
PR_snprintf(buf, sizeof(buf), "%d.%d.%d", NVPDB_VERSION_MAJOR,
|
||||
NVPDB_VERSION_MINOR, NVPDB_VERSION_MAINTENANCE);
|
||||
PutElement("Version", buf);
|
||||
PutEndGroup("Header");
|
||||
|
||||
return PR_TRUE;
|
||||
}
|
||||
|
||||
PRBool
|
||||
nsNameValuePairDB::PutElement(const char* aName, const char* aValue)
|
||||
{
|
||||
if (mAtEndOfGroup) {
|
||||
mError = PR_TRUE;
|
||||
NVPDB_PRINTF(("PutElement_Error"));
|
||||
return PR_FALSE;
|
||||
}
|
||||
|
||||
if ((!*aName) && (*aValue == '#'))
|
||||
fprintf(mFile, "%u %s\n", mCurrentGroup, aValue);
|
||||
else
|
||||
fprintf(mFile, "%u %s=%s\n", mCurrentGroup, aName, aValue);
|
||||
#ifdef DEBUG
|
||||
fflush(mFile);
|
||||
#endif
|
||||
return PR_TRUE;
|
||||
}
|
||||
|
||||
PRBool
|
||||
nsNameValuePairDB::PutEndGroup(const char* aType)
|
||||
{
|
||||
if (mAtEndOfGroup) {
|
||||
mError = PR_TRUE;
|
||||
NVPDB_PRINTF(("PutEndGroup_Error"));
|
||||
return PR_FALSE;
|
||||
}
|
||||
|
||||
mAtEndOfGroup = PR_TRUE;
|
||||
fprintf(mFile, "%u end=%s\n", mCurrentGroup, aType);
|
||||
#ifdef DEBUG
|
||||
fflush(mFile);
|
||||
#endif
|
||||
return PR_TRUE;
|
||||
}
|
||||
|
||||
PRBool
|
||||
nsNameValuePairDB::PutStartGroup(const char* aType)
|
||||
{
|
||||
if (!mAtEndOfGroup) {
|
||||
mError = PR_TRUE;
|
||||
NVPDB_PRINTF(("PutStartGroup_Error"));
|
||||
#ifdef DEBUG
|
||||
fflush(mFile);
|
||||
#endif
|
||||
return PR_FALSE;
|
||||
}
|
||||
|
||||
mAtEndOfGroup = PR_FALSE;
|
||||
mCurrentGroup++;
|
||||
fprintf(mFile, "%u begin=%s\n", mCurrentGroup, aType);
|
||||
#ifdef DEBUG
|
||||
fflush(mFile);
|
||||
#endif
|
||||
return PR_TRUE;
|
||||
}
|
||||
|
||||
PRBool
|
||||
nsNameValuePairDB::RenameTmp(const char* aCatalogName)
|
||||
{
|
||||
nsresult rv;
|
||||
nsCOMPtr<nsILocalFile> dir;
|
||||
PRBool exists = PR_FALSE;
|
||||
nsCAutoString old_name(aCatalogName);
|
||||
nsDependentCString current_name(aCatalogName);
|
||||
nsCAutoString tmp_name(aCatalogName);
|
||||
nsCAutoString old_name_tail;
|
||||
nsCAutoString current_name_tail;
|
||||
nsCOMPtr<nsILocalFile> old_file;
|
||||
nsCOMPtr<nsILocalFile> current_file;
|
||||
nsCOMPtr<nsILocalFile> tmp_file;
|
||||
nsCAutoString parent_dir;
|
||||
nsXPIDLCString parent_path;
|
||||
nsXPIDLCString cur_path;
|
||||
|
||||
//
|
||||
// Split the parent dir and file name
|
||||
//
|
||||
PRInt32 slash = 0, last_slash = -1;
|
||||
nsCAutoString fontDirName(aCatalogName);
|
||||
// RFindChar not coded so do it by hand
|
||||
while ((slash=fontDirName.FindChar('/', slash))>=0) {
|
||||
last_slash = slash;
|
||||
slash++;
|
||||
}
|
||||
if (last_slash < 0)
|
||||
goto Rename_Error;
|
||||
|
||||
fontDirName.Left(parent_dir, last_slash);
|
||||
dir = do_CreateInstance(NS_LOCAL_FILE_CONTRACTID, &rv);
|
||||
if (NS_FAILED(rv))
|
||||
goto Rename_Error;
|
||||
dir->InitWithPath(parent_dir.get());
|
||||
dir->GetPath(getter_Copies(parent_path));
|
||||
|
||||
if (!mAtEndOfGroup || mError)
|
||||
goto Rename_Error;
|
||||
|
||||
//
|
||||
// check that we have a tmp copy
|
||||
//
|
||||
tmp_name.Append(".tmp");
|
||||
tmp_file = do_CreateInstance(NS_LOCAL_FILE_CONTRACTID, &rv);
|
||||
if (NS_FAILED(rv))
|
||||
goto Rename_Error;
|
||||
tmp_file->InitWithPath(tmp_name.get());
|
||||
tmp_file->Exists(&exists);
|
||||
if (!exists)
|
||||
goto Rename_Error;
|
||||
|
||||
//
|
||||
// get rid of any old copy
|
||||
//
|
||||
old_name.Append(".old");
|
||||
old_file = do_CreateInstance(NS_LOCAL_FILE_CONTRACTID, &rv);
|
||||
if (NS_FAILED(rv))
|
||||
goto Rename_Error;
|
||||
old_file->InitWithPath(old_name.get());
|
||||
|
||||
//
|
||||
// Check we have a current copy
|
||||
//
|
||||
current_file = do_CreateInstance(NS_LOCAL_FILE_CONTRACTID, &rv);
|
||||
if (NS_FAILED(rv))
|
||||
goto Rename_Error;
|
||||
current_file->InitWithPath(current_name.get());
|
||||
current_file->Exists(&exists);
|
||||
if (exists) {
|
||||
//
|
||||
// Rename the current copy to old
|
||||
//
|
||||
current_file->GetPath(getter_Copies(cur_path));
|
||||
old_name.Right(old_name_tail, old_name.Length() - last_slash - 1);
|
||||
rv = current_file->MoveTo(dir, old_name_tail.get());
|
||||
if (NS_FAILED(rv))
|
||||
goto Rename_Error;
|
||||
}
|
||||
|
||||
//
|
||||
// Rename the tmp to current
|
||||
//
|
||||
current_name.Right(current_name_tail, current_name.Length() - last_slash - 1);
|
||||
rv = tmp_file->MoveTo(dir, current_name_tail.get());
|
||||
if (NS_FAILED(rv))
|
||||
goto Rename_Error;
|
||||
|
||||
//
|
||||
// remove the previous copy
|
||||
//
|
||||
if (exists) {
|
||||
old_file->Remove(PR_FALSE);
|
||||
}
|
||||
|
||||
return PR_TRUE;
|
||||
|
||||
Rename_Error:
|
||||
mError = PR_TRUE;
|
||||
NVPDB_PRINTF(("Rename_Error"));
|
||||
return PR_FALSE;
|
||||
}
|
||||
|
||||
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Ссылка в новой задаче