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341 lines
8.6 KiB
341 lines
8.6 KiB
/******************************Module*Header*******************************\
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* Module Name: fontsub.cxx
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*
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* Support for the [FontSubstitutes] section of WIN.INI (new functionality
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* from Windows 3.1).
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*
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* Copyright (c) 1990-1995 Microsoft Corporation
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*
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\**************************************************************************/
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// In Windows 3.1, there is a [FontSubstitutes] section that allows
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// face names in LOGFONTs to match other facenames.
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//
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// For example,
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//
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// [FontSubstitutes]
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// Helv=MS Sans Serif
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//
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// means that a LOGFONT with a lfFacename of "Helv" will match a physical
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// font with a facename of either "Helv" or "MS Sans Serif". That is,
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// "Helv" has an alternate match (or substitute match) of "MS Sans Serif".
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//
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// In Win 3.1, the standard "Helv" and "Tms Rmn" faces have been replaced
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// with "MS Sans Serif" and "MS Serif", respectively. This substitution
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// capability provides Win 3.1 with Win 3.0 compatibility for apps that
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// use the old name convention.
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#include "precomp.hxx"
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// #define DBG 1
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#if DBG
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VOID DbgPrintFontSubstitutes();
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#endif
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// This is a global reference to the font substitution table. If the table
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// is not initialized properly, then this is NULL and should not be
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// dereferenced.
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PFONTSUB gpfsTable = NULL;;
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COUNT gcfsTable = 0;
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// count of valid entries of the form face1,ch1=face2,ch2
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COUNT gcfsCharSetTable = 0;
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LONG cCapString(WCHAR *pwcDst,WCHAR *pwcSrc,INT cMax);
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/******************************Public*Routine******************************\
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*
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* PWSTR pwszFindComma(PWSTR pwszInput)
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*
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*
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* Effects: return the pointer to the charset string which is
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* starting immediately after the comma or if no comma is found,
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* return NULL
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*
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* History:
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* 27-Jun-1995 -by- Bodin Dresevic [BodinD]
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* Wrote it.
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\**************************************************************************/
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PWSTR pwszFindComma(PWSTR pwszInput)
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{
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PWSTR pwszEnd = pwszInput + LF_FACESIZE;
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for (; (*pwszInput != L'\0') && (pwszInput < pwszEnd); pwszInput++)
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{
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if (*pwszInput == L',')
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return (++pwszInput);
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}
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return NULL;
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}
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extern "C"
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VOID vCheckCharSet(FACE_CHARSET *pfcs, WCHAR * pwsz); // in mapfile.c
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/******************************Public*Routine******************************\
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*
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* VOID vProcessEntry
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*
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*
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* Effects: given value name string (or value data string)
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* produce face name string and charset
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*
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* History:
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* 28-Jun-1995 -by- Bodin Dresevic [BodinD]
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* Wrote it.
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\**************************************************************************/
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VOID vProcessEntry(PWSZ pwszIn, FACE_CHARSET *pfcs, PWSZ pwszOriginal)
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{
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PWSZ pwszCharSet;
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INT cwc;
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// now is the time to see if this is one of the entries of the form
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// Face1=Face2 (old format), or if this is one of the new entries of the form:
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// Face1,charset1=Face2,charset2.
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if (pwszCharSet = pwszFindComma(pwszIn))
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{
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cwc = pwszCharSet - pwszIn;
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// now need to produce and validate charset number from the string
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// that follows the comma
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vCheckCharSet(pfcs, pwszCharSet);
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}
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else
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{
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// mark the field as being left unspecified. In mapping this means
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// do not replace lfCharSet in the logfont when trying the alternate
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// name. In enumeration this means that this field should not be
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// taken into account
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cwc = LF_FACESIZE;
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pfcs->jCharSet = DEFAULT_CHARSET;
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pfcs->fjFlags = FJ_NOTSPECIFIED;
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}
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// now write the string
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cCapString(pfcs->awch, pwszIn, cwc);
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// finally save the original facename which is not necessarrily capitalized
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if (pwszOriginal)
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{
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if (pwszCharSet)
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{
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cwc--;
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RtlMoveMemory(pwszOriginal, pwszIn, cwc * sizeof(WCHAR));
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pwszOriginal[cwc] = L'\0';
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}
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else
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{
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wcscpy(pwszOriginal, pwszIn);
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}
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}
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}
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NTSTATUS
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QueryRegistryFontSubstituteListRoutine
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(
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PWSTR ValueName,
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ULONG ValueType,
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PVOID ValueData,
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ULONG ValueLength,
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PVOID Context,
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PVOID EntryContext
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)
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{
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PBYTE pjBuffer;
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FONTSUB fs;
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vProcessEntry((PWSZ) ValueData, &fs.fcsAltFace, NULL);
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vProcessEntry((PWSZ) ValueName, &fs.fcsFace, (PWSZ)fs.awchOriginal);
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// the following check eliminates the garbage entries that may have possibly
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// been entered in win.ini in the font substitution section
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if
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(
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(fs.fcsFace.fjFlags == fs.fcsAltFace.fjFlags)
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&&
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(fs.fcsFace.fjFlags != FJ_GARBAGECHARSET)
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)
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{
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pjBuffer = (PBYTE) PALLOCMEM((gcfsTable+1) * sizeof(FONTSUB),'bsfG');
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if (pjBuffer)
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{
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if (gpfsTable)
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{
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RtlMoveMemory(pjBuffer,
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gpfsTable,
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gcfsTable * sizeof(FONTSUB));
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VFREEMEM(gpfsTable);
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}
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gpfsTable = (PFONTSUB) pjBuffer;
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// copy new data that we have verified to be valid
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gpfsTable[gcfsTable] = fs;
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gcfsTable++;
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if (!fs.fcsFace.fjFlags) // if charset is specified
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gcfsCharSetTable++;
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}
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else
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{
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// we do not have enough memory - return failiure
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return STATUS_NO_MEMORY;
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}
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}
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return STATUS_SUCCESS;
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}
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/******************************Public*Routine******************************\
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* vInitFontSubTable
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*
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* Initializes the font substitutes table from data in the [FontSubstitutes]
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* section of the WIN.INI file. No error return code is provided since, if
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* this is not successful, then the table simply will not exist and the
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* global pointer to the table will remain NULL.
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*
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\**************************************************************************/
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VOID vInitFontSubTable()
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{
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RTL_QUERY_REGISTRY_TABLE QueryTable[2];
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NTSTATUS Status;
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QueryTable[0].QueryRoutine = QueryRegistryFontSubstituteListRoutine;
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QueryTable[0].Flags = 0;
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QueryTable[0].Name = NULL;
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QueryTable[0].EntryContext = NULL;
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QueryTable[0].DefaultType = REG_NONE;
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QueryTable[0].DefaultData = NULL;
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QueryTable[0].DefaultLength = 0;
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QueryTable[1].QueryRoutine = NULL;
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QueryTable[1].Flags = 0;
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QueryTable[1].Name = NULL;
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//
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// Initialize to an empty table
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//
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gpfsTable = (PFONTSUB) NULL;
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gcfsTable = 0;
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gcfsCharSetTable = 0;
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Status = RtlQueryRegistryValues(RTL_REGISTRY_WINDOWS_NT,
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L"FontSubstitutes",
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&QueryTable[0],
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NULL,
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NULL);
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if (!NT_SUCCESS(Status))
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{
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WARNING("Failiure to get font list\n");
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}
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#if 0 // don't want to do this any more
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DbgPrintFontSubstitutes();
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#endif
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}
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/******************************Public*Routine******************************\
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* pfsubAlternateFacename
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*
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* Search the font substitutes table for an alternative facename for the
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* given facename.
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*
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* Return:
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* Pointer to alt facename, NULL if not found.
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*
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* History:
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* 28-Jan-1992 -by- Gilman Wong [gilmanw]
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* Wrote it.
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\**************************************************************************/
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PFONTSUB pfsubAlternateFacename (
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PWCHAR pwchFacename
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)
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{
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PFONTSUB pfs = gpfsTable;
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PFONTSUB pfsEnd = gpfsTable + gcfsTable;
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WCHAR awchCapName[LF_FACESIZE];
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// Want case insensitive search, so capitalize the name.
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cCapString(awchCapName, pwchFacename, LF_FACESIZE);
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// Scan through the font substitution table for the key string.
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PWCHAR pwcA;
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PWCHAR pwcB;
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for (; pfs < pfsEnd; pfs++)
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{
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// Do the following inline for speed:
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//
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// if (!wcsncmpi(pwchFacename, pfs->fcsFace.awch, LF_FACESIZE))
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// return (pfs->fcsAltFace.awch);
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for (pwcA=awchCapName,pwcB=pfs->fcsFace.awch; *pwcA==*pwcB; pwcA++,pwcB++)
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{
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if (*pwcA == 0)
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{
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return pfs;
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}
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}
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}
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// Nothing found, so return NULL.
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return NULL;
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}
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#if DBG
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VOID DbgPrintFontSubstitutes()
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{
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PFONTSUB pfs = gpfsTable;
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PFONTSUB pfsEnd = gpfsTable + gcfsTable;
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//
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// Scan through the font substitution table for the key string.
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//
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KdPrint(("[FontSubstitutes]\n"));
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for (; pfs < pfsEnd; pfs++)
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KdPrint(("\t%ws: %ws, %d, fj=0x%x = %ws, %d, fj=0x%x \n",
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pfs->awchOriginal,
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pfs->fcsFace.awch,
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(USHORT)pfs->fcsFace.jCharSet,
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(USHORT)pfs->fcsFace.fjFlags,
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pfs->fcsAltFace.awch,
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(USHORT)pfs->fcsAltFace.jCharSet,
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(USHORT)pfs->fcsAltFace.fjFlags
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));
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}
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#endif
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