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Darwin-Streaming-Server/CommonUtilitiesLib/StringParser.cpp
Darren VanBuren 849723c9cf Add even more of the source 
This should be about everything needed to build so far?
2017-03-07 17:14:16 -08:00

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/*
*
* @APPLE_LICENSE_HEADER_START@
*
* Copyright (c) 1999-2008 Apple Inc. All Rights Reserved.
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*
*/
/*
File: StringParser.cpp
Contains: Implementation of StringParser class.
*/
#include "StringParser.h"
UInt8 StringParser::sNonWordMask[] =
{
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //0-9
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //10-19
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //20-29
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //30-39
1, 1, 1, 1, 1, 0, 1, 1, 1, 1, //40-49 - is a word
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //50-59
1, 1, 1, 1, 1, 0, 0, 0, 0, 0, //60-69 //stop on every character except a letter
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //70-79
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //80-89
0, 1, 1, 1, 1, 0, 1, 0, 0, 0, //90-99 _ is a word
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //100-109
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //110-119
0, 0, 0, 1, 1, 1, 1, 1, 1, 1, //120-129
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //130-139
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //140-149
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //150-159
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //160-169
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //170-179
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //180-189
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //190-199
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //200-209
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //210-219
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //220-229
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //230-239
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //240-249
1, 1, 1, 1, 1, 1 //250-255
};
UInt8 StringParser::sWordMask[] =
{
// Inverse of the above
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //0-9
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //10-19
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //20-29
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //30-39
0, 0, 0, 0, 0, 1, 0, 0, 0, 0, //40-49 - is a word
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //50-59
0, 0, 0, 0, 0, 1, 1, 1, 1, 1, //60-69 //stop on every character except a letter
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //70-79
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //80-89
1, 0, 0, 0, 0, 1, 0, 1, 1, 1, //90-99 _ is a word
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //100-109
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //110-119
1, 1, 1, 0, 0, 0, 0, 0, 0, 0, //120-129
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //130-139
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //140-149
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //150-159
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //160-169
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //170-179
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //180-189
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //190-199
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //200-209
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //210-219
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //220-229
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //230-239
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //240-249
0, 0, 0, 0, 0, 0 //250-255
};
UInt8 StringParser::sDigitMask[] =
{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //0-9
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //10-19
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //20-29
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //30-39
0, 0, 0, 0, 0, 0, 0, 0, 1, 1, //40-49 //stop on every character except a number
1, 1, 1, 1, 1, 1, 1, 1, 0, 0, //50-59
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //60-69
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //70-79
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //80-89
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //90-99
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //100-109
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //110-119
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //120-129
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //130-139
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //140-149
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //150-159
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //160-169
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //170-179
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //180-189
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //190-199
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //200-209
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //210-219
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //220-229
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //230-239
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //240-249
0, 0, 0, 0, 0, 0 //250-255
};
UInt8 StringParser::sEOLMask[] =
{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //0-9
1, 0, 0, 1, 0, 0, 0, 0, 0, 0, //10-19 //'\r' & '\n' are stop conditions
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //20-29
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //30-39
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //40-49
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //50-59
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //60-69
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //70-79
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //80-89
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //90-99
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //100-109
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //110-119
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //120-129
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //130-139
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //140-149
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //150-159
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //160-169
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //170-179
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //180-189
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //190-199
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //200-209
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //210-219
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //220-229
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //230-239
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //240-249
0, 0, 0, 0, 0, 0 //250-255
};
UInt8 StringParser::sWhitespaceMask[] =
{
1, 1, 1, 1, 1, 1, 1, 1, 1, 0, //0-9 // stop on '\t'
0, 0, 0, 0, 1, 1, 1, 1, 1, 1, //10-19 // '\r', \v', '\f' & '\n'
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //20-29
1, 1, 0, 1, 1, 1, 1, 1, 1, 1, //30-39 // ' '
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //40-49
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //50-59
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //60-69
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //70-79
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //80-89
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //90-99
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //100-109
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //110-119
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //120-129
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //130-139
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //140-149
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //150-159
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //160-169
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //170-179
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //180-189
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //190-199
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //200-209
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //210-219
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //220-229
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //230-239
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //240-249
1, 1, 1, 1, 1, 1 //250-255
};
UInt8 StringParser::sEOLWhitespaceMask[] =
{
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, //0-9 // \t is a stop
1, 1, 1, 1, 0, 0, 0, 0, 0, 0, //10-19 //'\r' & '\n' are stop conditions
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //20-29
0, 0, 1, 0, 0, 0, 0, 0, 0, 0, //30-39 ' ' is a stop
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //40-49
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //50-59
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //60-69
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //70-79
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //80-89
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //90-99
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //100-109
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //110-119
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //120-129
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //130-139
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //140-149
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //150-159
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //160-169
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //170-179
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //180-189
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //190-199
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //200-209
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //210-219
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //220-229
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //230-239
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //240-249
0, 0, 0, 0, 0, 0 //250-255
};
UInt8 StringParser::sEOLWhitespaceQueryMask[] =
{
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, //0-9 // \t is a stop
1, 1, 1, 1, 0, 0, 0, 0, 0, 0, //10-19 //'\r' & '\n' are stop conditions
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //20-29
0, 0, 1, 0, 0, 0, 0, 0, 0, 0, //30-39 ' ' is a stop
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //40-49
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //50-59
0, 0, 0, 1, 0, 0, 0, 0, 0, 0, //60-69 ? is a stop
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //70-79
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //80-89
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //90-99
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //100-109
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //110-119
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //120-129
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //130-139
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //140-149
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //150-159
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //160-169
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //170-179
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //180-189
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //190-199
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //200-209
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //210-219
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //220-229
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //230-239
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //240-249
0, 0, 0, 0, 0, 0 //250-255
};
void StringParser::ConsumeUntil(StrPtrLen* outString, char inStop)
{
if (this->ParserIsEmpty(outString))
return;
char *originalStartGet = fStartGet;
while ((fStartGet < fEndGet) && (*fStartGet != inStop))
AdvanceMark();
if (outString != NULL)
{
outString->Ptr = originalStartGet;
outString->Len = fStartGet - originalStartGet;
}
}
void StringParser::ConsumeUntil(StrPtrLen* outString, UInt8 *inMask)
{
if (this->ParserIsEmpty(outString))
return;
char *originalStartGet = fStartGet;
while ((fStartGet < fEndGet) && (!inMask[(unsigned char) (*fStartGet)]))//make sure inMask is indexed with an unsigned char
AdvanceMark();
if (outString != NULL)
{
outString->Ptr = originalStartGet;
outString->Len = fStartGet - originalStartGet;
}
}
void StringParser::ConsumeLength(StrPtrLen* spl, SInt32 inLength)
{
if (this->ParserIsEmpty(spl))
return;
//sanity check to make sure we aren't being told to run off the end of the
//buffer
if ((fEndGet - fStartGet) < inLength)
inLength = fEndGet - fStartGet;
if (spl != NULL)
{
spl->Ptr = fStartGet;
spl->Len = inLength;
}
if (inLength > 0)
{
for (short i=0; i<inLength; i++)
AdvanceMark();
}
else
fStartGet += inLength; // ***may mess up line number if we back up too much
}
UInt32 StringParser::ConsumeInteger(StrPtrLen* outString)
{
if (this->ParserIsEmpty(outString))
return 0;
UInt32 theValue = 0;
char *originalStartGet = fStartGet;
while ((fStartGet < fEndGet) && (*fStartGet >= '0') && (*fStartGet <= '9'))
{
theValue = (theValue * 10) + (*fStartGet - '0');
AdvanceMark();
}
if (outString != NULL)
{
outString->Ptr = originalStartGet;
outString->Len = fStartGet - originalStartGet;
}
return theValue;
}
Float32 StringParser::ConsumeFloat()
{
if (this->ParserIsEmpty(NULL))
return 0.0;
Float32 theFloat = 0;
while ((fStartGet < fEndGet) && (*fStartGet >= '0') && (*fStartGet <= '9'))
{
theFloat = (theFloat * 10) + (*fStartGet - '0');
AdvanceMark();
}
if ((fStartGet < fEndGet) && (*fStartGet == '.'))
AdvanceMark();
Float32 multiplier = (Float32) .1;
while ((fStartGet < fEndGet) && (*fStartGet >= '0') && (*fStartGet <= '9'))
{
theFloat += (multiplier * (*fStartGet - '0'));
multiplier *= (Float32).1;
AdvanceMark();
}
return theFloat;
}
Float32 StringParser::ConsumeNPT()
{
if (this->ParserIsEmpty(NULL))
return 0.0;
Float32 valArray[4] = {0, 0, 0, 0};
Float32 divArray[4] = {1, 1, 1, 1};
UInt32 valType = 0; // 0 == npt-sec, 1 == npt-hhmmss
UInt32 index;
for (index = 0; index < 4; index ++)
{
while ((fStartGet < fEndGet) && (*fStartGet >= '0') && (*fStartGet <= '9'))
{
valArray[index] = (valArray[index] * 10) + (*fStartGet - '0');
divArray[index] *= 10;
AdvanceMark();
}
if (fStartGet >= fEndGet || valType == 0 && index >= 1)
break;
if (*fStartGet == '.' && valType == 0 && index == 0)
;
else if (*fStartGet == ':' && index < 2)
valType = 1;
else if (*fStartGet == '.' && index == 2)
;
else
break;
AdvanceMark();
}
if (valType == 0)
return valArray[0] + (valArray[1] / divArray[1]);
else
return (valArray[0] * 3600) + (valArray[1] * 60) + valArray[2] + (valArray[3] / divArray[3]);
}
Bool16 StringParser::Expect(char stopChar)
{
if (this->ParserIsEmpty(NULL))
return false;
if (fStartGet >= fEndGet)
return false;
if(*fStartGet != stopChar)
return false;
else
{
AdvanceMark();
return true;
}
}
Bool16 StringParser::ExpectEOL()
{
if (this->ParserIsEmpty(NULL))
return false;
//This function processes all legal forms of HTTP / RTSP eols.
//They are: \r (alone), \n (alone), \r\n
Bool16 retVal = false;
if ((fStartGet < fEndGet) && ((*fStartGet == '\r') || (*fStartGet == '\n')))
{
retVal = true;
AdvanceMark();
//check for a \r\n, which is the most common EOL sequence.
if ((fStartGet < fEndGet) && ((*(fStartGet - 1) == '\r') && (*fStartGet == '\n')))
AdvanceMark();
}
return retVal;
}
void StringParser::ConsumeEOL(StrPtrLen* outString)
{
if (this->ParserIsEmpty(outString))
return;
//This function processes all legal forms of HTTP / RTSP eols.
//They are: \r (alone), \n (alone), \r\n
char *originalStartGet = fStartGet;
if ((fStartGet < fEndGet) && ((*fStartGet == '\r') || (*fStartGet == '\n')))
{
AdvanceMark();
//check for a \r\n, which is the most common EOL sequence.
if ((fStartGet < fEndGet) && ((*(fStartGet - 1) == '\r') && (*fStartGet == '\n')))
AdvanceMark();
}
if (outString != NULL)
{
outString->Ptr = originalStartGet;
outString->Len = fStartGet - originalStartGet;
}
}
void StringParser::UnQuote(StrPtrLen* outString)
{
// If a string is contained within double or single quotes
// then UnQuote() will remove them. - [sfu]
// sanity check
if (outString->Ptr == NULL || outString->Len < 2)
return;
// remove begining quote if it's there.
if (outString->Ptr[0] == '"' || outString->Ptr[0] == '\'')
{
outString->Ptr++; outString->Len--;
}
// remove ending quote if it's there.
if ( outString->Ptr[outString->Len-1] == '"' ||
outString->Ptr[outString->Len-1] == '\'' )
{
outString->Len--;
}
}
void StringParser::AdvanceMark()
{
if (this->ParserIsEmpty(NULL))
return;
if ((*fStartGet == '\n') || ((*fStartGet == '\r') && (fStartGet[1] != '\n')))
{
// we are progressing beyond a line boundary (don't count \r\n twice)
fCurLineNumber++;
}
fStartGet++;
}
#if STRINGPARSERTESTING
Bool16 StringParser::Test()
{
static char* string1 = "RTSP 200 OK\r\nContent-Type: MeowMix\r\n\t \n3450";
StrPtrLen theString(string1, strlen(string1));
StringParser victim(&theString);
StrPtrLen rtsp;
SInt32 theInt = victim.ConsumeInteger();
if (theInt != 0)
return false;
victim.ConsumeWord(&rtsp);
if ((rtsp.len != 4) && (strncmp(rtsp.Ptr, "RTSP", 4) != 0))
return false;
victim.ConsumeWhiteSpace();
theInt = victim.ConsumeInteger();
if (theInt != 200)
return false;
return true;
}
#endif
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