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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:17:27 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:17:27 +0000
commitf215e02bf85f68d3a6106c2a1f4f7f063f819064 (patch)
tree6bb5b92c046312c4e95ac2620b10ddf482d3fa8b /include/iprt/bldprog-strtab-template.cpp.h
parentInitial commit. (diff)
downloadvirtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.tar.xz
virtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.zip
Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/iprt/bldprog-strtab-template.cpp.h')
-rw-r--r--include/iprt/bldprog-strtab-template.cpp.h1335
1 files changed, 1335 insertions, 0 deletions
diff --git a/include/iprt/bldprog-strtab-template.cpp.h b/include/iprt/bldprog-strtab-template.cpp.h
new file mode 100644
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--- /dev/null
+++ b/include/iprt/bldprog-strtab-template.cpp.h
@@ -0,0 +1,1335 @@
+/* $Id: bldprog-strtab-template.cpp.h $ */
+/** @file
+ * IPRT - Build Program - String Table Generator.
+ */
+
+/*
+ * Copyright (C) 2006-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+
+/*
+ * (Avoid include sanity checks as this is ring-3 only, C++ code.)
+ */
+#if defined(__cplusplus) && defined(IN_RING3)
+
+
+/*********************************************************************************************************************************
+* Defined Constants And Macros *
+*********************************************************************************************************************************/
+/** @def BLDPROG_STRTAB_MAX_STRLEN
+ * The max length of strings in the table. */
+#if !defined(BLDPROG_STRTAB_MAX_STRLEN) || defined(DOXYGEN_RUNNING)
+# define BLDPROG_STRTAB_MAX_STRLEN 256
+#endif
+
+/** @def BLDPROG_STRTAB_WITH_COMPRESSION
+ * Enables very simple string compression.
+ */
+#if defined(DOXYGEN_RUNNING)
+# define BLDPROG_STRTAB_WITH_COMPRESSION
+#endif
+
+/** @def BLDPROG_STRTAB_WITH_CAMEL_WORDS
+ * Modifies the string compression to look for camel case words.
+ */
+#if defined(DOXYGEN_RUNNING)
+# define BLDPROG_STRTAB_WITH_CAMEL_WORDS
+#endif
+
+/** @def BLDPROG_STRTAB_PURE_ASCII
+ * String compression assumes pure 7-bit ASCII and will fail on UTF-8 when this
+ * is defined. Otherwise, the compression code will require IPRT to link.
+ */
+#if defined(DOXYGEN_RUNNING)
+# define BLDPROG_STRTAB_PURE_ASCII
+#endif
+
+
+
+/*********************************************************************************************************************************
+* Header Files *
+*********************************************************************************************************************************/
+#include <iprt/stdarg.h>
+#include <iprt/ctype.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#ifdef BLDPROG_STRTAB_WITH_COMPRESSION
+# include <map>
+# include <iprt/sanitized/string>
+
+# define BLDPROG_STRTAB_WITH_WORD_SEP_ALTERNATIVE
+typedef struct BLDPROGWORDFREQSTATS
+{
+ uint32_t cWithoutSep; /**< Number of occurances without a separator. */
+# ifdef BLDPROG_STRTAB_WITH_WORD_SEP_ALTERNATIVE
+ uint32_t cWithSep; /**< Number of occurance with a separator. */
+ char chSep; /**< The separator. First come basis. */
+# endif
+} BLDPROGWORDFREQSTATS;
+
+typedef std::map<std::string, BLDPROGWORDFREQSTATS> BLDPROGWORDFREQMAP;
+
+#endif
+
+#include "../../src/VBox/Runtime/include/internal/strhash.h" /** @todo make this one public */
+
+
+/*********************************************************************************************************************************
+* Structures and Typedefs *
+*********************************************************************************************************************************/
+/**
+ * Build table string.
+ */
+typedef struct BLDPROGSTRING
+{
+ /** The string.
+ * @note This may be modified or replaced (allocated from heap) when
+ * compressing the string table. */
+ char *pszString;
+ /** The string hash value. */
+ uint32_t uHash;
+ /** The strint table offset. */
+ uint32_t offStrTab;
+ /** The string length. */
+ size_t cchString;
+ /** Pointer to the next string reference (same string table entry). */
+ struct BLDPROGSTRING *pNextRef;
+ /** Pointer to the next string with the same hash value (collision). */
+ struct BLDPROGSTRING *pNextCollision;
+
+} BLDPROGSTRING;
+/** Pointer to a string table string. */
+typedef BLDPROGSTRING *PBLDPROGSTRING;
+
+
+/** String table data. */
+typedef struct BLDPROGSTRTAB
+{
+ /** The size of g_papStrHash. */
+ size_t cStrHash;
+ /** String hash table. */
+ PBLDPROGSTRING *papStrHash;
+ /** Duplicate strings found by AddString. */
+ size_t cDuplicateStrings;
+ /** Total length of the unique strings (no terminators). */
+ size_t cchUniqueStrings;
+ /** Number of unique strings after AddString. */
+ size_t cUniqueStrings;
+ /** Number of collisions. */
+ size_t cCollisions;
+
+ /** Number of entries in apSortedStrings. */
+ size_t cSortedStrings;
+ /** The sorted string table. */
+ PBLDPROGSTRING *papSortedStrings;
+
+#ifdef BLDPROG_STRTAB_WITH_COMPRESSION
+ /** The 256 words we've picked to be indexed by reference. */
+ BLDPROGSTRING aCompDict[256];
+ /** The frequency of the 256 dictionary entries. */
+ size_t auCompDictFreq[256];
+ /** Incoming strings pending compression. */
+ PBLDPROGSTRING *papPendingStrings;
+ /** Current number of entries in papStrPending. */
+ size_t cPendingStrings;
+ /** The allocated size of papPendingStrings. */
+ size_t cMaxPendingStrings;
+ /** Work frequency map.
+ * @todo rewrite in plain C. */
+ BLDPROGWORDFREQMAP Frequencies;
+ /** Map of characters used by input strings. */
+ uint64_t bmUsedChars[256/64];
+#endif
+
+ /** The string table. */
+ char *pachStrTab;
+ /** The actual string table size. */
+ size_t cchStrTab;
+} BLDPROGSTRTAB;
+typedef BLDPROGSTRTAB *PBLDPROGSTRTAB;
+
+#if RT_CLANG_PREREQ(4, 0) || RT_GNUC_PREREQ(4, 6)
+# pragma GCC diagnostic push
+# pragma GCC diagnostic ignored "-Wunused-function"
+#endif
+
+
+#ifdef BLDPROG_STRTAB_WITH_COMPRESSION
+
+/**
+ * Same as ASMBitTest.
+ *
+ * We cannot safely use ASMBitTest here because it must be inline, as this code
+ * is used to build RuntimeBldProg. */
+DECLINLINE(bool) BldProgBitIsSet(uint64_t const *pbmBitmap, size_t iBit)
+{
+ return RT_BOOL(pbmBitmap[iBit / 64] & RT_BIT_64(iBit % 64));
+}
+
+
+/**
+ * Same as ASMBitSet.
+ *
+ * We cannot safely use ASMBitSet here because it must be inline, as this code
+ * is used to build RuntimeBldProg.
+ */
+DECLINLINE(void) BldProgBitSet(uint64_t *pbmBitmap, size_t iBit)
+{
+ pbmBitmap[iBit / 64] |= RT_BIT_64(iBit % 64);
+}
+
+#endif
+
+
+/**
+ * Initializes the strint table compiler.
+ *
+ * @returns success indicator (out of memory if false).
+ * @param pThis The strint table compiler instance.
+ * @param cMaxStrings The max number of strings we'll be adding.
+ */
+static bool BldProgStrTab_Init(PBLDPROGSTRTAB pThis, size_t cMaxStrings)
+{
+ pThis->cStrHash = 0;
+ pThis->papStrHash = NULL;
+ pThis->cDuplicateStrings = 0;
+ pThis->cchUniqueStrings = 0;
+ pThis->cUniqueStrings = 0;
+ pThis->cCollisions = 0;
+ pThis->cSortedStrings = 0;
+ pThis->papSortedStrings = NULL;
+ pThis->pachStrTab = NULL;
+ pThis->cchStrTab = 0;
+#ifdef BLDPROG_STRTAB_WITH_COMPRESSION
+ memset(pThis->aCompDict, 0, sizeof(pThis->aCompDict));
+ pThis->papPendingStrings = NULL;
+ pThis->cPendingStrings = 0;
+ pThis->cMaxPendingStrings = cMaxStrings;
+ memset(pThis->bmUsedChars, 0, sizeof(pThis->bmUsedChars));
+ BldProgBitSet(pThis->bmUsedChars, 0); /* Some parts of the code still thinks zero is a terminator, so don't use it for now. */
+# ifndef BLDPROG_STRTAB_PURE_ASCII
+ BldProgBitSet(pThis->bmUsedChars, 0xff); /* Reserve escape byte for codepoints above 127. */
+# endif
+#endif
+
+ /*
+ * Allocate a hash table double the size of all strings (to avoid too
+ * many collisions). Add all strings to it, finding duplicates in the
+ * process.
+ */
+#ifdef BLDPROG_STRTAB_WITH_COMPRESSION
+ cMaxStrings += RT_ELEMENTS(pThis->aCompDict);
+#endif
+ cMaxStrings *= 2;
+ pThis->papStrHash = (PBLDPROGSTRING *)calloc(sizeof(pThis->papStrHash[0]), cMaxStrings);
+ if (pThis->papStrHash)
+ {
+ pThis->cStrHash = cMaxStrings;
+#ifdef BLDPROG_STRTAB_WITH_COMPRESSION
+ pThis->papPendingStrings = (PBLDPROGSTRING *)calloc(sizeof(pThis->papPendingStrings[0]), pThis->cMaxPendingStrings);
+ if (pThis->papPendingStrings)
+#endif
+ return true;
+
+#ifdef BLDPROG_STRTAB_WITH_COMPRESSION
+ free(pThis->papStrHash);
+ pThis->papStrHash = NULL;
+#endif
+ }
+ return false;
+}
+
+
+#if 0 /* unused */
+static void BldProgStrTab_Delete(PBLDPROGSTRTAB pThis)
+{
+ free(pThis->papStrHash);
+ free(pThis->papSortedStrings);
+ free(pThis->pachStrTab);
+# ifdef BLDPROG_STRTAB_WITH_COMPRESSION
+ free(pThis->papPendingStrings);
+# endif
+ memset(pThis, 0, sizeof(*pThis));
+}
+#endif
+
+#ifdef BLDPROG_STRTAB_WITH_COMPRESSION
+
+DECLINLINE(size_t) bldProgStrTab_compressorFindNextWord(const char *pszSrc, char ch, const char **ppszSrc)
+{
+ /*
+ * Skip leading word separators.
+ */
+# ifdef BLDPROG_STRTAB_WITH_CAMEL_WORDS
+ while ( ch == ' '
+ || ch == '-'
+ || ch == '+'
+ || ch == '_')
+# else
+ while (ch == ' ')
+# endif
+ ch = *++pszSrc;
+ if (ch)
+ {
+ /*
+ * Find end of word.
+ */
+ size_t cchWord = 1;
+# ifdef BLDPROG_STRTAB_WITH_CAMEL_WORDS
+ char chPrev = ch;
+ while ( (ch = pszSrc[cchWord]) != ' '
+ && ch != '\0'
+ && ch != '-'
+ && ch != '+'
+ && ch != '_'
+ && ( ch == chPrev
+ || !RT_C_IS_UPPER(ch)
+ || RT_C_IS_UPPER(chPrev)) )
+ {
+ chPrev = ch;
+ cchWord++;
+ }
+# else
+ while ((ch = pszSrc[cchWord]) != ' ' && ch != '\0')
+ cchWord++;
+# endif
+ *ppszSrc = pszSrc;
+ return cchWord;
+ }
+
+ *ppszSrc = pszSrc;
+ return 0;
+}
+
+
+/**
+ * Analyzes a string.
+ *
+ * @param pThis The strint table compiler instance.
+ * @param pStr The string to analyze.
+ */
+static void bldProgStrTab_compressorAnalyzeString(PBLDPROGSTRTAB pThis, PBLDPROGSTRING pStr)
+{
+ /*
+ * Mark all the string characters as used.
+ */
+ const char *psz = pStr->pszString;
+ char ch;
+ while ((ch = *psz++) != '\0')
+ BldProgBitSet(pThis->bmUsedChars, (uint8_t)ch);
+
+ /*
+ * For now we just consider words.
+ */
+ psz = pStr->pszString;
+ while ((ch = *psz) != '\0')
+ {
+ size_t cchWord = bldProgStrTab_compressorFindNextWord(psz, ch, &psz);
+ if (cchWord > 1)
+ {
+ std::string strWord(psz, cchWord);
+ BLDPROGWORDFREQMAP::iterator it = pThis->Frequencies.find(strWord);
+ if (it != pThis->Frequencies.end())
+ {
+# ifdef BLDPROG_STRTAB_WITH_WORD_SEP_ALTERNATIVE
+ char const chSep = psz[cchWord];
+ if (chSep != '\0' && (it->second.chSep == chSep || it->second.chSep == '\0'))
+ {
+ it->second.chSep = chSep;
+ it->second.cWithSep++;
+ }
+ else
+# endif
+ it->second.cWithoutSep++;
+ }
+ else
+ {
+# ifdef BLDPROG_STRTAB_WITH_WORD_SEP_ALTERNATIVE
+ char const chSep = psz[cchWord];
+ if (chSep != '\0')
+ {
+ BLDPROGWORDFREQSTATS const NewWord = { 0, 0, chSep };
+ pThis->Frequencies[strWord] = NewWord;
+ }
+ else
+ {
+ static BLDPROGWORDFREQSTATS const s_NewWord = { 0, 0, 0 };
+ pThis->Frequencies[strWord] = s_NewWord;
+ }
+# else
+ pThis->Frequencies[strWord].cWithoutSep = 0;
+# endif
+ }
+
+# if 0 /** @todo need better accounting for overlapping alternatives before this can be enabled. */
+ /* Two words - immediate yields calc may lie when this enabled and we may pick the wrong words. */
+ if (ch == ' ')
+ {
+ ch = psz[++cchWord];
+ if (ch != ' ' && ch != '\0')
+ {
+ size_t const cchSaved = cchWord;
+
+ do
+ cchWord++;
+ while ((ch = psz[cchWord]) != ' ' && ch != '\0');
+
+ strWord = std::string(psz, cchWord);
+ BLDPROGWORDFREQMAP::iterator it = pThis->Frequencies.find(strWord);
+ if (it != pThis->Frequencies.end())
+ it->second += cchWord - 1;
+ else
+ pThis->Frequencies[strWord] = 0;
+
+ cchWord = cchSaved;
+ }
+ }
+# endif
+ }
+ else if (!cchWord)
+ break;
+
+ /* Advance. */
+ psz += cchWord;
+ }
+ pStr->cchString = psz - pStr->pszString;
+ if (pStr->cchString > BLDPROG_STRTAB_MAX_STRLEN)
+ {
+ fprintf(stderr, "error: String to long (%u)\n", (unsigned)pStr->cchString);
+ abort();
+ }
+}
+
+#endif /* BLDPROG_STRTAB_WITH_COMPRESSION */
+
+/**
+ * Adds a string to the hash table.
+ * @param pThis The strint table compiler instance.
+ * @param pStr The string.
+ */
+static void bldProgStrTab_AddStringToHashTab(PBLDPROGSTRTAB pThis, PBLDPROGSTRING pStr)
+{
+ pStr->pNextRef = NULL;
+ pStr->pNextCollision = NULL;
+ pStr->offStrTab = 0;
+ pStr->uHash = sdbm(pStr->pszString, &pStr->cchString);
+ if (pStr->cchString > BLDPROG_STRTAB_MAX_STRLEN)
+ {
+ fprintf(stderr, "error: String to long (%u)\n", (unsigned)pStr->cchString);
+ exit(RTEXITCODE_FAILURE);
+ }
+
+ size_t idxHash = pStr->uHash % pThis->cStrHash;
+ PBLDPROGSTRING pCur = pThis->papStrHash[idxHash];
+ if (!pCur)
+ pThis->papStrHash[idxHash] = pStr;
+ else
+ {
+ /* Look for matching string. */
+ do
+ {
+ if ( pCur->uHash == pStr->uHash
+ && pCur->cchString == pStr->cchString
+ && memcmp(pCur->pszString, pStr->pszString, pStr->cchString) == 0)
+ {
+ pStr->pNextRef = pCur->pNextRef;
+ pCur->pNextRef = pStr;
+ pThis->cDuplicateStrings++;
+ return;
+ }
+ pCur = pCur->pNextCollision;
+ } while (pCur != NULL);
+
+ /* No matching string, insert. */
+ pThis->cCollisions++;
+ pStr->pNextCollision = pThis->papStrHash[idxHash];
+ pThis->papStrHash[idxHash] = pStr;
+ }
+
+ pThis->cUniqueStrings++;
+ pThis->cchUniqueStrings += pStr->cchString;
+}
+
+
+/**
+ * Adds a string to the string table.
+ *
+ * @param pThis The strint table compiler instance.
+ * @param pStr The string.
+ */
+static void BldProgStrTab_AddString(PBLDPROGSTRTAB pThis, PBLDPROGSTRING pStr)
+{
+#ifdef BLDPROG_STRTAB_WITH_COMPRESSION
+ bldProgStrTab_compressorAnalyzeString(pThis, pStr);
+ if (pThis->cPendingStrings < pThis->cMaxPendingStrings)
+ pThis->papPendingStrings[pThis->cPendingStrings++] = pStr;
+ else
+ abort();
+#else
+ bldProgStrTab_AddStringToHashTab(pThis, pStr);
+#endif
+}
+
+
+/**
+ * Adds a string to the string table.
+ *
+ * @param pThis The strint table compiler instance.
+ * @param pStr The string entry (uninitialized).
+ * @param psz The string, will be duplicated if compression is enabled.
+ */
+DECLINLINE(void) BldProgStrTab_AddStringDup(PBLDPROGSTRTAB pThis, PBLDPROGSTRING pStr, const char *psz)
+{
+#ifdef BLDPROG_STRTAB_WITH_COMPRESSION
+ pStr->pszString = strdup(psz);
+ if (!pStr->pszString)
+ abort();
+#else
+ pStr->pszString = (char *)psz;
+#endif
+ BldProgStrTab_AddString(pThis, pStr);
+}
+
+#ifdef BLDPROG_STRTAB_WITH_COMPRESSION
+
+/**
+ * Copies @a cchSrc chars from @a pchSrc to @a pszDst, escaping special
+ * sequences.
+ *
+ * @returns New @a pszDst position, NULL if invalid source encoding.
+ * @param pszDst The destination buffer.
+ * @param pszSrc The source buffer.
+ * @param cchSrc How much to copy.
+ */
+static char *bldProgStrTab_compressorCopyAndEscape(char *pszDst, const char *pszSrc, size_t cchSrc)
+{
+ while (cchSrc-- > 0)
+ {
+ char ch = *pszSrc;
+ if (!((unsigned char)ch & 0x80))
+ {
+ *pszDst++ = ch;
+ pszSrc++;
+ }
+ else
+ {
+# ifdef BLDPROG_STRTAB_PURE_ASCII
+ fprintf(stderr, "error: unexpected char value %#x\n", ch);
+ return NULL;
+# else
+ RTUNICP uc;
+ int rc = RTStrGetCpEx(&pszSrc, &uc);
+ if (RT_SUCCESS(rc))
+ {
+ *pszDst++ = (unsigned char)0xff; /* escape single code point. */
+ pszDst = RTStrPutCp(pszDst, uc);
+ }
+ else
+ {
+ fprintf(stderr, "Error: RTStrGetCpEx failed with rc=%d\n", rc);
+ return NULL;
+ }
+# endif
+ }
+ }
+ return pszDst;
+}
+
+
+/**
+ * Replaces the dictionary words and escapes non-ascii chars in a string.
+ *
+ * @param pThis The strint table compiler instance.
+ * @param pString The string to fixup.
+ */
+static bool bldProgStrTab_compressorFixupString(PBLDPROGSTRTAB pThis, PBLDPROGSTRING pStr)
+{
+ char szNew[BLDPROG_STRTAB_MAX_STRLEN * 2];
+ char *pszDst = szNew;
+ const char *pszSrc = pStr->pszString;
+ const char *pszSrcEnd = pszSrc + pStr->cchString;
+
+ char ch;
+ while ((ch = *pszSrc) != '\0')
+ {
+ const char * const pszSrcUncompressed = pszSrc;
+ size_t cchWord = bldProgStrTab_compressorFindNextWord(pszSrc, ch, &pszSrc);
+ size_t cchSrcUncompressed = pszSrc - pszSrcUncompressed;
+ if (cchSrcUncompressed > 0)
+ {
+ pszDst = bldProgStrTab_compressorCopyAndEscape(pszDst, pszSrcUncompressed, cchSrcUncompressed);
+ if (!pszDst)
+ return false;
+ }
+ if (!cchWord)
+ break;
+
+ /* Check for g_aWord matches. */
+ if (cchWord > 1)
+ {
+ size_t cchMax = pszSrcEnd - pszSrc;
+ for (unsigned i = 0; i < RT_ELEMENTS(pThis->aCompDict); i++)
+ {
+ size_t cchLen = pThis->aCompDict[i].cchString;
+ if ( cchLen >= cchWord
+ && cchLen <= cchMax
+ && memcmp(pThis->aCompDict[i].pszString, pszSrc, cchLen) == 0)
+ {
+ *pszDst++ = (unsigned char)i;
+ pszSrc += cchLen;
+ cchWord = 0;
+ break;
+ }
+ }
+ }
+
+ if (cchWord > 0)
+ {
+ /* Copy the current word. */
+ pszDst = bldProgStrTab_compressorCopyAndEscape(pszDst, pszSrc, cchWord);
+ if (!pszDst)
+ return false;
+ pszSrc += cchWord;
+ }
+ }
+
+ /* Just terminate it now. */
+ *pszDst = '\0';
+
+ /*
+ * Update the string.
+ */
+ size_t cchNew = pszDst - &szNew[0];
+ if (cchNew > pStr->cchString)
+ {
+ pStr->pszString = (char *)malloc(cchNew + 1);
+ if (!pStr->pszString)
+ {
+ fprintf(stderr, "Out of memory!\n");
+ return false;
+ }
+ }
+ memcpy(pStr->pszString, szNew, cchNew + 1);
+ pStr->cchString = cchNew;
+
+ return true;
+}
+
+
+/**
+ * Entry in SortedDictionary.
+ *
+ * Uses variable length string member, so not class and allocated via malloc.
+ */
+struct SortedDictionaryEntry
+{
+ size_t m_cchGain;
+ size_t m_cchString;
+ RT_FLEXIBLE_ARRAY_EXTENSION
+ char m_szString[RT_FLEXIBLE_ARRAY];
+
+ /** Allocates and initializes a new entry. */
+ static SortedDictionaryEntry *allocate(const char *a_pch, size_t a_cch, size_t a_cchGain, char a_chSep)
+ {
+ size_t cbString = a_cch + !!a_chSep + 1;
+ SortedDictionaryEntry *pNew = (SortedDictionaryEntry *)malloc(RT_UOFFSETOF(SortedDictionaryEntry, m_szString) + cbString);
+ if (pNew)
+ {
+ pNew->m_cchGain = a_cchGain;
+ memcpy(pNew->m_szString, a_pch, a_cch);
+ if (a_chSep)
+ pNew->m_szString[a_cch++] = a_chSep;
+ pNew->m_szString[a_cch] = '\0';
+ pNew->m_cchString = a_cch;
+ }
+ return pNew;
+ }
+
+
+ /** Compares this dictionary entry with an incoming one.
+ * @retval -1 if this entry is of less worth than the new one.
+ * @retval 0 if this entry is of equal worth to the new one.
+ * @retval +1 if this entry is of more worth than the new one.
+ */
+ int compare(size_t a_cchGain, size_t a_cchString)
+ {
+ /* Higher gain is preferred of course: */
+ if (m_cchGain < a_cchGain)
+ return -1;
+ if (m_cchGain > a_cchGain)
+ return 1;
+
+ /* Gain is the same. Prefer the shorter string, as it will result in a shorter string table: */
+ if (m_cchString > a_cchString)
+ return -1;
+ if (m_cchString < a_cchString)
+ return 1;
+ return 0;
+ }
+};
+
+
+/**
+ * Insertion sort dictionary that keeps the 256 best words.
+ *
+ * Used by bldProgStrTab_compressorDoStringCompression to pick the dictionary
+ * words.
+ */
+class SortedDictionary
+{
+public:
+ size_t m_cEntries;
+ SortedDictionaryEntry *m_apEntries[256];
+
+ SortedDictionary()
+ : m_cEntries(0)
+ {
+ for (size_t i = 0; i < RT_ELEMENTS(m_apEntries); i++)
+ m_apEntries[i] = NULL;
+ }
+
+ ~SortedDictionary()
+ {
+ while (m_cEntries > 0)
+ {
+ free(m_apEntries[--m_cEntries]);
+ m_apEntries[m_cEntries] = NULL;
+ }
+ }
+
+
+ /**
+ * Inserts a new entry, if it's worth it.
+ * @returns true on succes, false if out of memory.
+ */
+ bool insert(const char *a_pchString, size_t a_cchStringBase, size_t a_cchGain, char a_chSep = 0)
+ {
+ size_t const cchString = a_cchStringBase + (a_chSep + 1);
+
+ /*
+ * Drop the insert if the symbol table is full and the insert is less worth the last entry:
+ */
+ if ( m_cEntries >= RT_ELEMENTS(m_apEntries)
+ && m_apEntries[RT_ELEMENTS(m_apEntries) - 1]->compare(a_cchGain, cchString) >= 0)
+ return true;
+
+ /*
+ * Create a new entry to insert.
+ */
+ SortedDictionaryEntry *pNewEntry = SortedDictionaryEntry::allocate(a_pchString, a_cchStringBase, a_cchGain, a_chSep);
+ if (!pNewEntry)
+ return false;
+
+ /*
+ * Find the insert point.
+ */
+ if (m_cEntries == 0)
+ {
+ m_apEntries[0] = pNewEntry;
+ m_cEntries = 1;
+ }
+ else
+ {
+ /* If table is full, drop the last entry before we start (already made
+ sure the incoming entry is preferable to the one were dropping): */
+ if (m_cEntries >= RT_ELEMENTS(m_apEntries))
+ {
+ free(m_apEntries[RT_ELEMENTS(m_apEntries) - 1]);
+ m_apEntries[RT_ELEMENTS(m_apEntries) - 1] = NULL;
+ m_cEntries = RT_ELEMENTS(m_apEntries) - 1;
+ }
+
+ /* Find where to insert the new entry: */
+ /** @todo use binary search. */
+ size_t i = m_cEntries;
+ while (i > 0 && m_apEntries[i - 1]->compare(a_cchGain, cchString) < 0)
+ i--;
+
+ /* Shift entries to make room and insert the new entry. */
+ if (i < m_cEntries)
+ memmove(&m_apEntries[i + 1], &m_apEntries[i], (m_cEntries - i) * sizeof(m_apEntries[0]));
+ m_apEntries[i] = pNewEntry;
+ m_cEntries++;
+ }
+ return true;
+ }
+};
+
+
+/**
+ * Compresses the vendor and product strings.
+ *
+ * This is very very simple (a lot less work than the string table for
+ * instance).
+ */
+static bool bldProgStrTab_compressorDoStringCompression(PBLDPROGSTRTAB pThis, bool fVerbose)
+{
+ /*
+ * Sort the frequency analyzis result and pick the top entries for any
+ * available dictionary slots.
+ */
+ SortedDictionary SortedDict;
+ for (BLDPROGWORDFREQMAP::iterator it = pThis->Frequencies.begin(); it != pThis->Frequencies.end(); ++it)
+ {
+ bool fInsert;
+ size_t const cchString = it->first.length();
+# ifndef BLDPROG_STRTAB_WITH_WORD_SEP_ALTERNATIVE
+ size_t const cchGainWithout = it->second.cWithoutSep * cchString;
+# else
+ size_t const cchGainWithout = (it->second.cWithoutSep + it->second.cWithSep) * cchString;
+ size_t const cchGainWith = it->second.cWithSep * (cchString + 1);
+ if (cchGainWith > cchGainWithout)
+ fInsert = SortedDict.insert(it->first.c_str(), cchString, cchGainWith, it->second.chSep);
+ else
+# endif
+ fInsert = SortedDict.insert(it->first.c_str(), cchString, cchGainWithout);
+ if (!fInsert)
+ return false;
+ }
+
+ size_t cb = 0;
+ size_t cWords = 0;
+ size_t iDict = 0;
+ for (size_t i = 0; i < RT_ELEMENTS(pThis->aCompDict); i++)
+ {
+ char szTmp[2] = { (char)i, '\0' };
+ const char *psz = szTmp;
+ if ( BldProgBitIsSet(pThis->bmUsedChars, i)
+ || iDict >= SortedDict.m_cEntries)
+ {
+ /* character entry */
+ pThis->auCompDictFreq[i] = 0;
+ pThis->aCompDict[i].cchString = 1;
+ }
+ else
+ {
+ /* word entry */
+ cb += SortedDict.m_apEntries[iDict]->m_cchGain;
+ pThis->auCompDictFreq[i] = SortedDict.m_apEntries[iDict]->m_cchGain;
+ pThis->aCompDict[i].cchString = SortedDict.m_apEntries[iDict]->m_cchString;
+ psz = SortedDict.m_apEntries[iDict]->m_szString;
+ cWords++;
+ iDict++;
+ }
+ pThis->aCompDict[i].pszString = (char *)malloc(pThis->aCompDict[i].cchString + 1);
+ if (pThis->aCompDict[i].pszString)
+ memcpy(pThis->aCompDict[i].pszString, psz, pThis->aCompDict[i].cchString + 1);
+ else
+ return false;
+ }
+
+ if (fVerbose)
+ printf("debug: Estimated string compression saving: %u bytes\n"
+ "debug: %u words, %u characters\n"
+ , (unsigned)cb, (unsigned)cWords, (unsigned)(RT_ELEMENTS(pThis->aCompDict) - cWords));
+
+ /*
+ * Rework the strings.
+ */
+ size_t cchOld = 0;
+ size_t cchOldMax = 0;
+ size_t cchOldMin = BLDPROG_STRTAB_MAX_STRLEN;
+ size_t cchNew = 0;
+ size_t cchNewMax = 0;
+ size_t cchNewMin = BLDPROG_STRTAB_MAX_STRLEN;
+ size_t i = pThis->cPendingStrings;
+ while (i-- > 0)
+ {
+ PBLDPROGSTRING pCurStr = pThis->papPendingStrings[i];
+ cchOld += pCurStr->cchString;
+ if (pCurStr->cchString > cchOldMax)
+ cchOldMax = pCurStr->cchString;
+ if (pCurStr->cchString < cchOldMin)
+ cchOldMin = pCurStr->cchString;
+
+ if (!bldProgStrTab_compressorFixupString(pThis, pCurStr))
+ return false;
+
+ cchNew += pCurStr->cchString;
+ if (pCurStr->cchString > cchNewMax)
+ cchNewMax = pCurStr->cchString;
+ if (pCurStr->cchString < cchNewMin)
+ cchNewMin = pCurStr->cchString;
+
+ bldProgStrTab_AddStringToHashTab(pThis, pCurStr);
+ }
+
+ /*
+ * Do debug stats.
+ */
+ if (fVerbose)
+ {
+ for (i = 0; i < RT_ELEMENTS(pThis->aCompDict); i++)
+ cchNew += pThis->aCompDict[i].cchString + 1;
+
+ printf("debug: Strings: original: %u bytes; compressed: %u bytes;", (unsigned)cchOld, (unsigned)cchNew);
+ if (cchNew < cchOld)
+ printf(" saving %u bytes (%u%%)\n", (unsigned)(cchOld - cchNew), (unsigned)((cchOld - cchNew) * 100 / cchOld));
+ else
+ printf(" wasting %u bytes!\n", (unsigned)(cchOld - cchNew));
+ printf("debug: Original string lengths: average %u; min %u; max %u\n",
+ (unsigned)(cchOld / pThis->cPendingStrings), (unsigned)cchOldMin, (unsigned)cchOldMax);
+ printf("debug: Compressed string lengths: average %u; min %u; max %u\n",
+ (unsigned)(cchNew / pThis->cPendingStrings), (unsigned)cchNewMin, (unsigned)cchNewMax);
+ }
+
+ return true;
+}
+
+#endif /* BLDPROG_STRTAB_WITH_COMPRESSION */
+
+/**
+ * Inserts a string into g_apUniqueStrings.
+ * @param pThis The strint table compiler instance.
+ * @param pStr The string.
+ */
+static void bldProgStrTab_InsertUniqueString(PBLDPROGSTRTAB pThis, PBLDPROGSTRING pStr)
+{
+ size_t iIdx;
+ size_t iEnd = pThis->cSortedStrings;
+ if (iEnd)
+ {
+ size_t iStart = 0;
+ for (;;)
+ {
+ iIdx = iStart + (iEnd - iStart) / 2;
+ if (pThis->papSortedStrings[iIdx]->cchString < pStr->cchString)
+ {
+ if (iIdx <= iStart)
+ break;
+ iEnd = iIdx;
+ }
+ else if (pThis->papSortedStrings[iIdx]->cchString > pStr->cchString)
+ {
+ if (++iIdx >= iEnd)
+ break;
+ iStart = iIdx;
+ }
+ else
+ break;
+ }
+
+ if (iIdx != pThis->cSortedStrings)
+ memmove(&pThis->papSortedStrings[iIdx + 1], &pThis->papSortedStrings[iIdx],
+ (pThis->cSortedStrings - iIdx) * sizeof(pThis->papSortedStrings[iIdx]));
+ }
+ else
+ iIdx = 0;
+
+ pThis->papSortedStrings[iIdx] = pStr;
+ pThis->cSortedStrings++;
+}
+
+
+/**
+ * Compiles the string table after the string has been added.
+ *
+ * This will save space by dropping string terminators, eliminating duplicates
+ * and try find strings that are sub-strings of others.
+ *
+ * Will initialize the StrRef of all StrTabString instances.
+ *
+ * @returns success indicator (error flagged).
+ * @param pThis The strint table compiler instance.
+ */
+static bool BldProgStrTab_CompileIt(PBLDPROGSTRTAB pThis, bool fVerbose)
+{
+#ifdef BLDPROG_STRTAB_WITH_COMPRESSION
+ /*
+ * Do the compression and add all the compressed strings to the table.
+ */
+ if (!bldProgStrTab_compressorDoStringCompression(pThis, fVerbose))
+ return false;
+
+ /*
+ * Add the dictionary strings.
+ */
+ for (unsigned i = 0; i < RT_ELEMENTS(pThis->aCompDict); i++)
+ if (pThis->aCompDict[i].cchString > 1)
+ bldProgStrTab_AddStringToHashTab(pThis, &pThis->aCompDict[i]);
+# ifdef RT_STRICT
+ else if (pThis->aCompDict[i].cchString != 1)
+ abort();
+# endif
+#endif
+ if (fVerbose)
+ printf("debug: %u unique strings (%u bytes), %u duplicates, %u collisions\n",
+ (unsigned)pThis->cUniqueStrings, (unsigned)pThis->cchUniqueStrings,
+ (unsigned)pThis->cDuplicateStrings, (unsigned)pThis->cCollisions);
+
+ /*
+ * Create papSortedStrings from the hash table. The table is sorted by
+ * string length, with the longer strings first, so that we increase our
+ * chances of locating duplicate substrings.
+ */
+ pThis->papSortedStrings = (PBLDPROGSTRING *)malloc(sizeof(pThis->papSortedStrings[0]) * pThis->cUniqueStrings);
+ if (!pThis->papSortedStrings)
+ return false;
+ pThis->cSortedStrings = 0;
+ size_t idxHash = pThis->cStrHash;
+ while (idxHash-- > 0)
+ {
+ PBLDPROGSTRING pCur = pThis->papStrHash[idxHash];
+ if (pCur)
+ {
+ do
+ {
+ bldProgStrTab_InsertUniqueString(pThis, pCur);
+ pCur = pCur->pNextCollision;
+ } while (pCur);
+ }
+ }
+
+ /*
+ * Create the actual string table.
+ */
+ pThis->pachStrTab = (char *)malloc(pThis->cchUniqueStrings + 1);
+ if (!pThis->pachStrTab)
+ return false;
+ pThis->cchStrTab = 0;
+ for (size_t i = 0; i < pThis->cSortedStrings; i++)
+ {
+ PBLDPROGSTRING pCur = pThis->papSortedStrings[i];
+ const char * const pszCur = pCur->pszString;
+ size_t const cchCur = pCur->cchString;
+ size_t offStrTab = pThis->cchStrTab;
+
+ /*
+ * See if the string is a substring already found in the string table.
+ * Excluding the zero terminator increases the chances for this.
+ */
+ size_t cchLeft = pThis->cchStrTab >= cchCur ? pThis->cchStrTab - cchCur : 0;
+ const char *pchLeft = pThis->pachStrTab;
+ char const chFirst = *pszCur;
+ while (cchLeft > 0)
+ {
+ const char *pchCandidate = (const char *)memchr(pchLeft, chFirst, cchLeft);
+ if (!pchCandidate)
+ break;
+ if (memcmp(pchCandidate, pszCur, cchCur) == 0)
+ {
+ offStrTab = pchCandidate - pThis->pachStrTab;
+ break;
+ }
+
+ cchLeft -= pchCandidate + 1 - pchLeft;
+ pchLeft = pchCandidate + 1;
+ }
+
+ if (offStrTab == pThis->cchStrTab)
+ {
+ /*
+ * See if the start of the string overlaps the end of the string table.
+ */
+ if (pThis->cchStrTab && cchCur > 1)
+ {
+ cchLeft = RT_MIN(pThis->cchStrTab, cchCur - 1);
+ pchLeft = &pThis->pachStrTab[pThis->cchStrTab - cchLeft];
+ while (cchLeft > 0)
+ {
+ const char *pchCandidate = (const char *)memchr(pchLeft, chFirst, cchLeft);
+ if (!pchCandidate)
+ break;
+ cchLeft -= pchCandidate - pchLeft;
+ pchLeft = pchCandidate;
+ if (memcmp(pchLeft, pszCur, cchLeft) == 0)
+ {
+ size_t cchToCopy = cchCur - cchLeft;
+ memcpy(&pThis->pachStrTab[offStrTab], &pszCur[cchLeft], cchToCopy);
+ pThis->cchStrTab += cchToCopy;
+ offStrTab = pchCandidate - pThis->pachStrTab;
+ break;
+ }
+ cchLeft--;
+ pchLeft++;
+ }
+ }
+
+ /*
+ * If we didn't have any luck above, just append the string.
+ */
+ if (offStrTab == pThis->cchStrTab)
+ {
+ memcpy(&pThis->pachStrTab[offStrTab], pszCur, cchCur);
+ pThis->cchStrTab += cchCur;
+ }
+ }
+
+ /*
+ * Set the string table offset for all the references to this string.
+ */
+ do
+ {
+ pCur->offStrTab = (uint32_t)offStrTab;
+ pCur = pCur->pNextRef;
+ } while (pCur != NULL);
+ }
+
+ if (fVerbose)
+ printf("debug: String table: %u bytes\n", (unsigned)pThis->cchStrTab);
+ return true;
+}
+
+
+#ifdef RT_STRICT
+/**
+ * Sanity checks a string table string.
+ * @param pThis The strint table compiler instance.
+ * @param pStr The string to check.
+ */
+static void BldProgStrTab_CheckStrTabString(PBLDPROGSTRTAB pThis, PBLDPROGSTRING pStr)
+{
+ if (pStr->cchString != strlen(pStr->pszString))
+ abort();
+ if (pStr->offStrTab >= pThis->cchStrTab)
+ abort();
+ if (pStr->offStrTab + pStr->cchString > pThis->cchStrTab)
+ abort();
+ if (memcmp(pStr->pszString, &pThis->pachStrTab[pStr->offStrTab], pStr->cchString) != 0)
+ abort();
+}
+#endif
+
+
+/**
+ * Output the string table string in C string litteral fashion.
+ *
+ * @param pThis The strint table instance.
+ * @param pString The string to print.
+ * @param pOut The output stream.
+ */
+static void BldProgStrTab_PrintCStringLitteral(PBLDPROGSTRTAB pThis, PBLDPROGSTRING pString, FILE *pOut)
+{
+ const unsigned char *psz = (const unsigned char *)pString->pszString;
+ unsigned char uch;
+ while ((uch = *psz++) != '\0')
+ {
+#ifdef BLDPROG_STRTAB_WITH_COMPRESSION
+ if (pThis->aCompDict[uch].cchString == 1)
+#else
+ if (!(uch & 0x80))
+#endif
+ {
+ if (uch != '\'' && uch != '\\')
+ fputc((char)uch, pOut);
+ else
+ {
+ fputc('\\', pOut);
+ fputc((char)uch, pOut);
+ }
+ }
+#ifdef BLDPROG_STRTAB_WITH_COMPRESSION
+# ifndef BLDPROG_STRTAB_PURE_ASCII
+ else if (uch == 0xff)
+ {
+ RTUNICP uc = RTStrGetCp((const char *)psz);
+ psz += RTStrCpSize(uc);
+ fprintf(pOut, "\\u%04x", uc);
+ }
+# else
+ else
+ fputs(pThis->aCompDict[uch].pszString, pOut);
+# endif
+#else
+ else
+ fprintf(pOut, "\\x%02x", (unsigned)uch);
+ NOREF(pThis);
+#endif
+ }
+}
+
+
+/**
+ * Writes the string table code to the output stream.
+ *
+ * @param pThis The strint table compiler instance.
+ * @param pOut The output stream.
+ * @param pszScope The scoping ("static " or empty string),
+ * including trailing space.
+ * @param pszPrefix The variable prefix. Typically "g_" for C programs,
+ * whereas C++ classes normally use "class::s_g".
+ * @param pszBaseName The base name for the variables. The user
+ * accessible variable will end up as just the
+ * prefix and basename concatenated.
+ */
+static void BldProgStrTab_WriteStringTable(PBLDPROGSTRTAB pThis, FILE *pOut,
+ const char *pszScope, const char *pszPrefix, const char *pszBaseName)
+{
+#ifdef RT_STRICT
+ /*
+ * Do some quick sanity checks while we're here.
+ */
+# ifdef BLDPROG_STRTAB_WITH_COMPRESSION
+ for (unsigned i = 0; i < RT_ELEMENTS(pThis->aCompDict); i++)
+ {
+ if (BldProgBitIsSet(pThis->bmUsedChars, i)
+ ? pThis->aCompDict[i].cchString != 1 : pThis->aCompDict[i].cchString < 1)
+ abort();
+ if (pThis->aCompDict[i].cchString > 1)
+ BldProgStrTab_CheckStrTabString(pThis, &pThis->aCompDict[i]);
+ }
+# endif
+#endif
+
+ /*
+ * Create a table for speeding up the character categorization.
+ */
+ uint8_t abCharCat[256];
+ memset(abCharCat, 0, sizeof(abCharCat));
+ abCharCat[(unsigned char)'\\'] = 1;
+ abCharCat[(unsigned char)'\''] = 1;
+ for (unsigned i = 0; i < 0x20; i++)
+ abCharCat[i] = 2;
+ for (unsigned i = 0x7f; i < 0x100; i++)
+ abCharCat[i] = 2;
+#ifdef BLDPROG_STRTAB_WITH_COMPRESSION
+ for (unsigned i = 0; i < 0x100; i++)
+ if (!BldProgBitIsSet(pThis->bmUsedChars, i)) /* Encode table references using '\xYY'. */
+ abCharCat[i] = 2;
+#endif
+
+ /*
+ * We follow the sorted string table, one string per line.
+ */
+ fprintf(pOut,
+ "#include <iprt/bldprog-strtab.h>\n"
+ "\n"
+ "static const char g_achStrTab%s[] =\n"
+ "{\n",
+ pszBaseName);
+
+ uint32_t off = 0;
+ for (uint32_t i = 0; i < pThis->cSortedStrings; i++)
+ {
+ PBLDPROGSTRING pCur = pThis->papSortedStrings[i];
+ uint32_t offEnd = pCur->offStrTab + (uint32_t)pCur->cchString;
+ if (offEnd > off)
+ {
+ /* Comment with an uncompressed and more readable version of the string. */
+ if (off == pCur->offStrTab)
+ fprintf(pOut, "/* 0x%05x = \"", off);
+ else
+ fprintf(pOut, "/* 0X%05x = \"", off);
+ BldProgStrTab_PrintCStringLitteral(pThis, pCur, pOut);
+ fputs("\" */\n", pOut);
+
+ /* Must use char by char here or we may trigger the max string
+ length limit in the compiler, */
+ fputs(" ", pOut);
+ for (; off < offEnd; off++)
+ {
+ unsigned char uch = pThis->pachStrTab[off];
+ fputc('\'', pOut);
+ if (abCharCat[uch] == 0)
+ fputc(uch, pOut);
+ else if (abCharCat[uch] != 1)
+ fprintf(pOut, "\\x%02x", (unsigned)uch);
+ else
+ {
+ fputc('\\', pOut);
+ fputc(uch, pOut);
+ }
+ fputc('\'', pOut);
+ fputc(',', pOut);
+ }
+ fputc('\n', pOut);
+ }
+ }
+
+ fprintf(pOut,
+ "};\n"
+ "AssertCompile(sizeof(g_achStrTab%s) == %#x);\n\n",
+ pszBaseName, (unsigned)pThis->cchStrTab);
+
+#ifdef BLDPROG_STRTAB_WITH_COMPRESSION
+ /*
+ * Write the compression dictionary.
+ */
+ fprintf(pOut,
+ "static const RTBLDPROGSTRREF g_aCompDict%s[%u] = \n"
+ "{\n",
+ pszBaseName, (unsigned)RT_ELEMENTS(pThis->aCompDict));
+ for (unsigned i = 0; i < RT_ELEMENTS(pThis->aCompDict); i++)
+ if (pThis->aCompDict[i].cchString > 1)
+ fprintf(pOut, " /*[%3u]=*/ { %#08x, %#04x }, // %6lu - %s\n", i,
+ pThis->aCompDict[i].offStrTab, (unsigned)pThis->aCompDict[i].cchString,
+ (unsigned long)pThis->auCompDictFreq[i], pThis->aCompDict[i].pszString);
+# ifndef BLDPROG_STRTAB_PURE_ASCII
+ else if (i == 0xff)
+ fprintf(pOut, " /*[%3u]=*/ { 0x000000, 0x00 }, // UTF-8 escape\n", i);
+# endif
+ else if (i == 0)
+ fprintf(pOut, " /*[%3u]=*/ { 0x000000, 0x00 }, // unused, because zero terminator\n", i);
+ else if (i < 0x20)
+ fprintf(pOut, " /*[%3u]=*/ { 0x000000, 0x00 }, // %02x\n", i, i);
+ else
+ fprintf(pOut, " /*[%3u]=*/ { 0x000000, 0x00 }, // '%c'\n", i, (char)i);
+ fprintf(pOut, "};\n\n");
+#endif
+
+
+ /*
+ * Write the string table data structure.
+ */
+ fprintf(pOut,
+ "%sconst RTBLDPROGSTRTAB %s%s = \n"
+ "{\n"
+ " /*.pchStrTab = */ &g_achStrTab%s[0],\n"
+ " /*.cchStrTab = */ sizeof(g_achStrTab%s),\n"
+ ,
+ pszScope, pszPrefix, pszBaseName, pszBaseName, pszBaseName);
+#ifdef BLDPROG_STRTAB_WITH_COMPRESSION
+ fprintf(pOut,
+ " /*.cCompDict = */ %u,\n"
+ " /*.paCompDict = */ &g_aCompDict%s[0]\n"
+ "};\n"
+# ifndef BLDPROG_STRTAB_PURE_ASCII /* 255 or 256 entries is how the decoder knows */
+ , (unsigned)RT_ELEMENTS(pThis->aCompDict) - 1,
+# else
+ , (unsigned)RT_ELEMENTS(pThis->aCompDict),
+# endif
+ pszBaseName);
+#else
+ fprintf(pOut,
+ " /*.cCompDict = */ 0,\n"
+ " /*.paCompDict = */ NULL\n"
+ "};\n");
+#endif
+}
+
+#if RT_CLANG_PREREQ(4, 0) || RT_GNUC_PREREQ(4, 6)
+# pragma GCC diagnostic pop
+#endif
+
+#endif /* __cplusplus && IN_RING3 */
+