Source code of Windows XP (NT5)
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//////////////////////////////////////////////////////////////////////
// PhoneContext.cpp: implementation of the CPhoneContext class and
// subclasses.
//
// Created by JOEM 03-2000
// Copyright (C) 2000 Microsoft Corporation
// All Rights Reserved
//
/////////////////////////////////////////////////////// JOEM 3-2000 //
#include "stdafx.h"
#include "PhoneContext.h"
#include <stdio.h>
//////////////////////////////////////////////////////////////////////
// CPhoneContext
// Construction/Destruction
/////////////////////////////////////////////////////// JOEM 3-2000 //
CPhoneContext::CPhoneContext()
{
m_ulNRules = 0;
m_ppContextRules = NULL;
}
CPhoneContext::~CPhoneContext()
{
ULONG i = 0;
ULONG j = 0;
ULONG k = 0;
for (i=0; i<m_ulNRules; i++)
{
DeleteContextRule( m_ppContextRules[i] );
}
free (m_ppContextRules);
}
//////////////////////////////////////////////////////////////////////
// CPhoneContext::Load
//
// Reads in the phone context file.
//
/////////////////////////////////////////////////////// JOEM 3-2000 //
HRESULT CPhoneContext::Load(const WCHAR *pszPathName)
{
HRESULT hr = S_OK;
FILE* fp = NULL;
WCHAR line[256] = L"";
WCHAR* ptr = NULL;
Macro* macros = NULL;
USHORT nMacros = 0;
USHORT state = 0;
SPDBG_ASSERT (pszPathName);
if ((fp = _wfopen(pszPathName, L"r")) == NULL)
{
hr = E_FAIL;
}
state = 0;
while ( SUCCEEDED(hr) && fgetws (line, sizeof(line), fp) )
{
// Strip off the newline character
if (line[wcslen(line)-1] == L'\n')
{
line[wcslen(line)-1] = L'\0';
}
// Line ends when a comment marker is found
if ( (ptr = wcschr (line, L'#')) != NULL )
{
*ptr = L'\0';
}
ptr = line;
WSkipWhiteSpace (ptr);
if (!*ptr)
{
continue;
}
// Could be a macro
if (*ptr == L'%')
{
hr = ReadMacro (ptr, &macros, &nMacros);
}
else
{
// It's not a macro, must be a rule
while ( SUCCEEDED(hr) && *ptr )
{
switch (state) {
case 0:
{
WCHAR* end;
end = ptr;
WSkipNonWhiteSpace(end);
*end++ = L'\0';
state = 1;
hr = CreateRule (ptr);
if ( SUCCEEDED(hr) )
{
ptr = end;
WSkipWhiteSpace (ptr);
}
}
break;
case 1:
if (*ptr == L'{')
{
ptr++;
WSkipWhiteSpace(ptr);
state = 2;
}
else
{
hr = E_FAIL;
}
break;
case 2:
// We are in a rule, load several phoneClasses
if (*ptr == L'}')
{
state = 0;
ptr++;
WSkipWhiteSpace (ptr);
}
else
{
hr = ParsePhoneClass (macros, nMacros, m_ppContextRules[m_ulNRules-1], &ptr);
}
break;
default:
hr = E_FAIL;
}
} // while (*ptr)
} // else (Not a macro)
} // while ( SUCCEEDED(hr) && fgetws ...
if (fp)
{
fclose(fp);
}
if (macros)
{
free(macros);
}
return hr;
}
//////////////////////////////////////////////////////////////////////
// CPhoneContext::Apply
//
// Applies phone context rules to determine transition cost between
// the previous and current entry.
//
/////////////////////////////////////////////////////// JOEM 3-2000 //
HRESULT CPhoneContext::Apply(IPromptEntry *pPreviousIPE, IPromptEntry *pCurrentIPE, double *pdCost)
{
HRESULT hr = S_OK;
double partialCost = 0;
const WCHAR* prevPhone = NULL;
const WCHAR* prevContext = NULL;
const WCHAR* curPhone = NULL;
const WCHAR* curContext = NULL;
SPDBG_ASSERT (pPreviousIPE);
SPDBG_ASSERT (pCurrentIPE);
SPDBG_ASSERT (pdCost);
*pdCost = 0.0;
// Should these two partial costs have the same weight?
if ( SUCCEEDED(hr) )
{
hr = SearchPhoneTag (pPreviousIPE, &prevPhone, g_Phone_Tags[END_TAG]);
}
if ( SUCCEEDED(hr) )
{
hr = SearchPhoneTag (pCurrentIPE, &curContext, g_Phone_Tags[LEFT_TAG]);
}
if ( SUCCEEDED(hr) )
{
hr = ApplyPhoneticRule (prevPhone, curContext, &partialCost);
if ( SUCCEEDED(hr) )
{
*pdCost += partialCost;
}
}
if ( SUCCEEDED(hr) )
{
hr = SearchPhoneTag (pPreviousIPE, &prevContext, g_Phone_Tags[RIGHT_TAG]);
}
if ( SUCCEEDED(hr) )
{
SearchPhoneTag (pCurrentIPE, &curPhone, g_Phone_Tags[START_TAG]);
}
if ( SUCCEEDED(hr) )
{
hr = ApplyPhoneticRule (curPhone, prevContext, &partialCost);
if ( SUCCEEDED(hr) )
{
*pdCost += partialCost;
}
}
return hr;
}
//////////////////////////////////////////////////////////////////////
// CPhoneContext::ReadMacro
//
// Helper function to read in a macro from the Phone context file.
//
/////////////////////////////////////////////////////// JOEM 3-2000 //
HRESULT CPhoneContext::ReadMacro(const WCHAR *pszText, Macro **ppMacros, USHORT *punMacros)
{
HRESULT hr = S_OK;
SPDBG_ASSERT(pszText);
SPDBG_ASSERT(ppMacros);
SPDBG_ASSERT(punMacros);
if (*ppMacros)
{
*ppMacros = (Macro*) realloc (*ppMacros, (*punMacros + 1) * sizeof (**ppMacros));
}
else
{
*ppMacros = (Macro*) malloc (sizeof (**ppMacros));
}
if (*ppMacros == NULL)
{
hr = E_OUTOFMEMORY;
}
if ( SUCCEEDED(hr) )
{
if (swscanf (pszText, L"%%%32s %lf", (*ppMacros)[*punMacros].name, &(*ppMacros)[*punMacros].value) != 2)
{
hr = E_FAIL;
}
}
if ( SUCCEEDED(hr) )
{
(*punMacros)++;
}
return hr;
}
//////////////////////////////////////////////////////////////////////
// CPhoneContext::CreateRule
//
// Helper function to read in a macro from the Phone context file.
//
/////////////////////////////////////////////////////// JOEM 3-2000 //
HRESULT CPhoneContext::CreateRule(const WCHAR *pszText)
{
HRESULT hr = S_OK;
CContextRule* newRule = NULL;
SPDBG_ASSERT (pszText);
if (m_ppContextRules)
{
m_ppContextRules = (CContextRule**) realloc (m_ppContextRules, (m_ulNRules + 1) * sizeof(*m_ppContextRules));
}
else
{
m_ppContextRules = (CContextRule**) malloc (sizeof(*m_ppContextRules));
}
if (!m_ppContextRules)
{
hr = E_OUTOFMEMORY;
}
if ( SUCCEEDED(hr) )
{
if ((newRule = (CContextRule*) calloc (1, sizeof(*newRule))) == NULL)
{
hr = E_OUTOFMEMORY;
}
}
if ( SUCCEEDED(hr) )
{
if ( (newRule->m_pszRuleName = wcsdup(pszText)) == NULL)
{
hr = E_OUTOFMEMORY;
}
else
{
hr = RegularizeText(newRule->m_pszRuleName, KEEP_PUNCTUATION);
}
}
if ( SUCCEEDED(hr) )
{
m_ppContextRules[m_ulNRules] = newRule;
m_ulNRules++;
}
if ( FAILED(hr) )
{
if ( newRule )
{
if ( newRule->m_pszRuleName )
{
free (newRule->m_pszRuleName);
newRule->m_pszRuleName = NULL;
}
free (newRule);
newRule = NULL;
}
}
return hr;
}
//////////////////////////////////////////////////////////////////////
// CPhoneContext::ParsePhoneClass
//
// Reads, parses, creates a phone class. Adds phones to class.
//
/////////////////////////////////////////////////////// JOEM 3-2000 //
HRESULT CPhoneContext::ParsePhoneClass(const Macro *pMacros, const USHORT unMacros, CContextRule* pRule, WCHAR **ppszOrig)
{
HRESULT hr = S_OK;
WCHAR* ptr = NULL;
WCHAR* end = NULL;
int i;
SPDBG_ASSERT (ppszOrig && *ppszOrig);
ptr = *ppszOrig;
WSkipWhiteSpace (ptr);
end = ptr;
WSkipNonWhiteSpace (end);
*end++ = L'\0';
if ( SUCCEEDED(hr) )
{
hr = CreatePhoneClass (&pRule->m_pvPhoneClasses, &pRule->m_unNPhoneClasses, ptr);
}
if ( SUCCEEDED(hr) )
{
ptr = end;
WSkipWhiteSpace (ptr);
if (*ptr != L'{') {
return 0;
}
ptr ++;
WSkipWhiteSpace (ptr);
}
if ( SUCCEEDED(hr) )
{
while ( SUCCEEDED(hr) && *ptr!= L'}' )
{
if (*ptr == L'\0')
{
hr = E_FAIL;
}
if ( SUCCEEDED(hr) )
{
end = ptr;
WSkipNonWhiteSpace (end);
*end++ = L'\0';
hr = AddPhoneToClass (pRule->m_pvPhoneClasses[pRule->m_unNPhoneClasses-1], ptr);
}
if ( SUCCEEDED(hr) )
{
ptr = end;
WSkipWhiteSpace (ptr);
}
}
}
if ( SUCCEEDED(hr) )
{
ptr++;
WSkipWhiteSpace(ptr);
if (*ptr == L'%')
{
// It is a macro
ptr++;
for (i=0; i<unMacros; i++)
{
if (wcsncmp (ptr, pMacros[i].name, wcslen(pMacros[i].name)) == 0)
{
pRule->m_pvPhoneClasses[pRule->m_unNPhoneClasses-1]->m_dWeight
= pMacros[i].value;
break;
}
}
if (i == unMacros)
{
hr = E_FAIL;
}
}
else
{
// Get the value directly
pRule->m_pvPhoneClasses[pRule->m_unNPhoneClasses-1]->m_dWeight
= wcstod(ptr, NULL);
}
}
if ( SUCCEEDED(hr) )
{
WSkipNonWhiteSpace(ptr);
WSkipWhiteSpace(ptr);
*ppszOrig = ptr;
}
return hr;
}
//////////////////////////////////////////////////////////////////////
// CPhoneContext
//
// CreatePhoneClass
//
/////////////////////////////////////////////////////// JOEM 3-2000 //
HRESULT CPhoneContext::CreatePhoneClass(CPhoneClass*** pppClasses, USHORT* punClasses, const WCHAR *psz)
{
HRESULT hr = S_OK;
CPhoneClass* phClass = NULL;
SPDBG_ASSERT (pppClasses);
SPDBG_ASSERT (punClasses);
SPDBG_ASSERT (psz);
if ( SUCCEEDED(hr) )
{
if ((phClass = (CPhoneClass*) calloc (1, sizeof(*phClass))) == NULL)
{
hr = E_OUTOFMEMORY;
}
}
if ( SUCCEEDED(hr) )
{
if ((phClass->m_pszPhoneClassName = wcsdup(psz)) == NULL)
{
hr = E_OUTOFMEMORY;
}
else
{
hr = RegularizeText(phClass->m_pszPhoneClassName, KEEP_PUNCTUATION);
}
}
if ( SUCCEEDED(hr) )
{
if (*pppClasses)
{
*pppClasses = (CPhoneClass**) realloc (*pppClasses, (*punClasses +1) * sizeof(**pppClasses));
}
else
{
*pppClasses = (CPhoneClass**) malloc (sizeof(**pppClasses));
}
if (*pppClasses == NULL)
{
hr = E_OUTOFMEMORY;
}
}
if ( SUCCEEDED(hr) )
{
(*pppClasses)[*punClasses] = phClass;
(*punClasses)++;
}
if ( FAILED(hr) )
{
DeletePhoneClass (phClass);
}
return hr;
}
//////////////////////////////////////////////////////////////////////
// CPhoneContext
//
// AddPhoneToClass
//
/////////////////////////////////////////////////////// JOEM 3-2000 //
HRESULT CPhoneContext::AddPhoneToClass(CPhoneClass* phClass, WCHAR *phone)
{
HRESULT hr = S_OK;
SPDBG_ASSERT(phClass);
if (phClass->m_pppszPhones)
{
phClass->m_pppszPhones = (WCHAR**) realloc (phClass->m_pppszPhones, (phClass->m_unNPhones +1) * sizeof (*phClass->m_pppszPhones));
}
else
{
phClass->m_pppszPhones = (WCHAR**) malloc (sizeof (*phClass->m_pppszPhones));
}
if (phClass->m_pppszPhones == NULL)
{
hr = E_OUTOFMEMORY;
}
if ( SUCCEEDED(hr) )
{
if ( (phClass->m_pppszPhones[phClass->m_unNPhones] = wcsdup(phone)) == NULL )
{
hr = E_OUTOFMEMORY;
}
else
{
hr = RegularizeText(phClass->m_pppszPhones[phClass->m_unNPhones], KEEP_PUNCTUATION);
}
}
if ( SUCCEEDED(hr) )
{
phClass->m_unNPhones++;
}
return hr;
}
//////////////////////////////////////////////////////////////////////
// CPhoneContext
//
// SearchPhoneTag
//
/////////////////////////////////////////////////////// JOEM 3-2000 //
HRESULT CPhoneContext::SearchPhoneTag(IPromptEntry *pIPE, const WCHAR **result, CONTEXT_PHONE_TAG phoneTag)
{
HRESULT hr = S_OK;
WCHAR* ptr = NULL;
USHORT nTags = 0;
const WCHAR* tag = L"";
int i = 0;
SPDBG_ASSERT (result);
switch ( phoneTag.iPhoneTag )
{
case START_TAG:
hr = pIPE->GetStartPhone( result );
break;
case END_TAG:
hr = pIPE->GetEndPhone( result );
break;
case RIGHT_TAG:
hr = pIPE->GetRightContext( result );
break;
case LEFT_TAG:
hr = pIPE->GetLeftContext( result );
break;
default:
*result = NULL;
break;
}
return hr;
}
//////////////////////////////////////////////////////////////////////
// CPhoneContext
//
// ApplyPhoneticRule
//
/////////////////////////////////////////////////////// JOEM 3-2000 //
HRESULT CPhoneContext::ApplyPhoneticRule(const WCHAR *pszPhone, const WCHAR *pszContext, double *cost)
{
HRESULT hr = S_OK;
CContextRule* rule = NULL;
bool fDone = false;
WCHAR* phnNextRule = NULL;
WCHAR* cntxtNextRule = NULL;
SPDBG_ASSERT (cost);
if ( SUCCEEDED(hr) )
{
hr = FindContextRule (L"MAIN", &rule);
}
if ( SUCCEEDED(hr) )
{
// cost initialized to no match at all
hr = GetWeight (rule, L"NONE", cost);
}
if ( !pszPhone || !pszContext )
{
fDone = true;
}
if ( SUCCEEDED(hr) && !fDone )
{
// First try if they are the same
if (wcscmp (pszPhone, pszContext) == 0)
{
hr = GetWeight (rule, L"ALL", cost);
fDone = true;
}
}
if ( SUCCEEDED(hr) && !fDone )
{
// Now iterate over the rules
do
{
if ( SUCCEEDED(hr) && !fDone )
{
hr = ApplyRule (rule, pszPhone, &phnNextRule);
}
if ( SUCCEEDED(hr) && !fDone )
{
hr = ApplyRule (rule, pszContext, &cntxtNextRule);
}
if ( SUCCEEDED(hr) && !fDone && phnNextRule && cntxtNextRule )
{
// if the two phones are both in the same next rule, continue. Otherwise, done.
if ( phnNextRule && cntxtNextRule && wcscmp(phnNextRule, cntxtNextRule) )
{
fDone = true;
}
}
if ( SUCCEEDED(hr) && !fDone && phnNextRule && cntxtNextRule )
{
// They are the same, get the cost for the next iteration
hr = GetWeight (rule, phnNextRule, cost);
}
if ( SUCCEEDED(hr) && !fDone && phnNextRule && cntxtNextRule )
{
// And the next rule to apply
hr = FindContextRule (phnNextRule, &rule);
if ( FAILED(hr) )
{
fDone = true;
hr = S_OK;
}
}
} while ( !fDone && rule && phnNextRule && cntxtNextRule);
}
return hr;
}
//////////////////////////////////////////////////////////////////////
// CPhoneContext
//
// FindContextRule
//
/////////////////////////////////////////////////////// JOEM 3-2000 //
HRESULT CPhoneContext::FindContextRule(const WCHAR *pszName, CContextRule** ppRule)
{
HRESULT hr = E_FAIL;
USHORT i = 0;
SPDBG_ASSERT(pszName);
for (i=0; i< m_ulNRules; i++)
{
if ( wcscmp (m_ppContextRules[i]->m_pszRuleName, pszName) == 0 )
{
*ppRule = m_ppContextRules[i];
hr = S_OK;
break;
}
}
return hr;
}
//////////////////////////////////////////////////////////////////////
// CPhoneContext
//
// ApplyRule
//
/////////////////////////////////////////////////////// JOEM 3-2000 //
HRESULT CPhoneContext::ApplyRule(const CContextRule *pRule, const WCHAR *pszPhone, WCHAR** ppszNextRule)
{
HRESULT hr = S_FALSE;
USHORT i = 0;
USHORT j = 0;
SPDBG_ASSERT (pRule);
SPDBG_ASSERT (pszPhone);
*ppszNextRule = NULL;
for ( i=0; i < pRule->m_unNPhoneClasses; i++ )
{
for ( j=0; j < pRule->m_pvPhoneClasses[i]->m_unNPhones; j++ )
{
if ( wcscmp( pszPhone, pRule->m_pvPhoneClasses[i]->m_pppszPhones[j] ) == 0 )
{
*ppszNextRule = pRule->m_pvPhoneClasses[i]->m_pszPhoneClassName;
hr = S_OK;
break;
}
}
if ( hr == S_OK )
{
break;
}
}
return hr;
}
//////////////////////////////////////////////////////////////////////
// CPhoneContext
//
// GetWeight
//
/////////////////////////////////////////////////////// JOEM 3-2000 //
HRESULT CPhoneContext::GetWeight(const CContextRule *pRule, const WCHAR *pszName, double *pdCost)
{
HRESULT hr = E_FAIL;
USHORT i = 0;
SPDBG_ASSERT (pRule);
SPDBG_ASSERT (pszName);
SPDBG_ASSERT (pdCost);
for (i=0; i < pRule->m_unNPhoneClasses; i++)
{
if ( wcscmp(pRule->m_pvPhoneClasses[i]->m_pszPhoneClassName, pszName) == 0 )
{
*pdCost = pRule->m_pvPhoneClasses[i]->m_dWeight;
hr = S_OK;
break;
}
}
return hr;
}
//////////////////////////////////////////////////////////////////////
// CPhoneContext
//
// DeletePhoneClass
//
/////////////////////////////////////////////////////// JOEM 3-2000 //
void CPhoneContext::DeletePhoneClass(CPhoneClass *pClass)
{
if (pClass)
{
if (pClass->m_pszPhoneClassName)
{
free (pClass->m_pszPhoneClassName);
}
if (pClass->m_pppszPhones)
{
int i;
for (i=0; i<pClass->m_unNPhones; i++)
{
free (pClass->m_pppszPhones[i]);
}
free (pClass->m_pppszPhones);
}
free (pClass);
}
}
//////////////////////////////////////////////////////////////////////
// CPhoneContext
//
// DeleteContextRule
//
/////////////////////////////////////////////////////// JOEM 3-2000 //
void CPhoneContext::DeleteContextRule(CContextRule *pRule)
{
if (pRule)
{
if (pRule->m_pszRuleName)
{
free (pRule->m_pszRuleName);
}
if (pRule->m_pvPhoneClasses)
{
int i;
for (i=0; i<pRule->m_unNPhoneClasses; i++)
{
DeletePhoneClass (pRule->m_pvPhoneClasses[i]);
}
free (pRule->m_pvPhoneClasses);
}
free (pRule);
}
}
//////////////////////////////////////////////////////////////////////
// CPhoneContext
//
// DebugPhoneContext
//
// Function for debug help - just outputs the entire CPhoneContext
// class.
//
/////////////////////////////////////////////////////// JOEM 3-2000 //
void CPhoneContext::DebugContextClass()
{
USHORT i = 0;
USHORT j = 0;
USHORT k = 0;
WCHAR* RuleName = NULL;
WCHAR* PhoneClassName = NULL;
WCHAR* Phone = NULL;
ULONG NumRules = 0;
USHORT NumPhoneClasses = 0;
USHORT NumPhones = 0;
USHORT RuleCount = 0;
USHORT PCCount = 0;
USHORT PhoneCount = 0;
double Weight = 0.0;
WCHAR DebugStr[128];
// Print out each rule
for (i=0; i<m_ulNRules; i++)
{
RuleCount = i+1;
NumRules = m_ulNRules;
RuleName = m_ppContextRules[i]->m_pszRuleName;
swprintf (DebugStr, L"Rule: %s, (%d of %d)\n", RuleName, RuleCount, NumRules);
OutputDebugStringW(DebugStr);
// Within each rule, print out the phone classes
for (j=0; j<m_ppContextRules[i]->m_unNPhoneClasses; j++)
{
PCCount = j+1;
NumPhoneClasses = m_ppContextRules[i]->m_unNPhoneClasses;
PhoneClassName = m_ppContextRules[i]->m_pvPhoneClasses[j]->m_pszPhoneClassName;
Weight = m_ppContextRules[i]->m_pvPhoneClasses[j]->m_dWeight;
swprintf (DebugStr, L"\tPhoneClass: %s, (%d of %d) ... weight=%f\n", PhoneClassName, PCCount, NumPhoneClasses, Weight);
OutputDebugStringW(DebugStr);
// Within each phone class, print out the phones
for (k=0; k<m_ppContextRules[i]->m_pvPhoneClasses[j]->m_unNPhones; k++)
{
PhoneCount = k+1;
NumPhones = m_ppContextRules[i]->m_pvPhoneClasses[j]->m_unNPhones;
Phone = m_ppContextRules[i]->m_pvPhoneClasses[j]->m_pppszPhones[k];
swprintf (DebugStr, L"\t\tPhone: %s, (%d of %d)\n", Phone, PhoneCount, NumPhones);
OutputDebugStringW(DebugStr);
}
}
}
}
HRESULT CPhoneContext::LoadDefault()
{
HRESULT hr = S_OK;
USHORT i = 0;
USHORT j = 0;
Macro* macros = NULL;
USHORT nMacros = 0;
WCHAR* pText = NULL;
WCHAR* ptr = NULL;
// Load the macros
for ( i=0; i < g_nMacros; i++ )
{
pText = wcsdup(g_macros[i]);
if ( !pText )
{
hr = E_OUTOFMEMORY;
}
else
{
hr = ReadMacro (pText, &macros, &nMacros);
free(pText);
pText = NULL;
}
}
// Load the rules
for ( i=0; i < g_nRules && SUCCEEDED(hr); i++ )
{
hr = CreateRule(g_rules[i].name);
if ( SUCCEEDED(hr) )
{
j=0;
while ( SUCCEEDED(hr) && g_rules[i].rule[j] )
{
if ( SUCCEEDED(hr) )
{
pText = wcsdup(g_rules[i].rule[j]);
if ( !pText )
{
hr = E_OUTOFMEMORY;
}
else
{
ptr = pText;
hr = ParsePhoneClass (macros, nMacros, m_ppContextRules[m_ulNRules-1], &ptr);
free(pText);
pText = NULL;
}
}
j++;
}
}
}
if (macros)
{
free(macros);
}
//DebugContextClass();
return hr;
}