Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 388 insertions, 0 deletions

diff --git a/src/bldprogs/filesplitter.cpp b/src/bldprogs/filesplitter.cpp
new file mode 100644
index 00000000..90c7dbe7
--- /dev/null
+++ b/src/bldprogs/filesplitter.cpp
@@ -0,0 +1,388 @@
+/* $Id: filesplitter.cpp $ */
+/** @file
+ * File splitter - Splits a text file according to ###### markers in it.
+ */
+
+/*
+ * 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>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include <iprt/string.h>
+#include <iprt/stdarg.h>
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+#ifndef S_ISDIR
+# define S_ISDIR(a_fMode)       ( (S_IFMT & (a_fMode)) == S_IFDIR )
+#endif
+
+
+/**
+ * Calculates the line number for a file position.
+ *
+ * @returns Line number.
+ * @param   pcszContent         The file content.
+ * @param   pcszPos             The current position.
+ */
+static unsigned long lineNumber(const char *pcszContent, const char *pcszPos)
+{
+    unsigned long cLine = 0;
+    while (   *pcszContent
+           && (uintptr_t)pcszContent < (uintptr_t)pcszPos)
+    {
+        pcszContent = strchr(pcszContent, '\n');
+        if (!pcszContent)
+            break;
+        ++cLine;
+        ++pcszContent;
+    }
+
+    return cLine;
+}
+
+
+/**
+ * Writes an error message.
+ *
+ * @returns RTEXITCODE_FAILURE.
+ * @param   pcszFormat          Error message.
+ * @param   ...                 Format argument referenced in the message.
+ */
+static int printErr(const char *pcszFormat, ...)
+{
+    va_list va;
+
+    fprintf(stderr, "filesplitter: ");
+    va_start(va, pcszFormat);
+    vfprintf(stderr, pcszFormat, va);
+    va_end(va);
+
+    return RTEXITCODE_FAILURE;
+}
+
+
+/**
+ * Opens the makefile list for writing.
+ *
+ * @returns Exit code.
+ * @param   pcszPath            The path to the file.
+ * @param   pcszVariableName    The make variable name.
+ * @param   ppFile              Where to return the file stream.
+ */
+static int openMakefileList(const char *pcszPath, const char *pcszVariableName, FILE **ppFile)
+{
+    *ppFile = NULL;
+
+    FILE *pFile= fopen(pcszPath, "w");
+    if (!pFile)
+#ifdef _MSC_VER
+        return printErr("Failed to open \"%s\" for writing the file list: %s (win32: %d)\n",
+                        pcszPath, strerror(errno), _doserrno);
+#else
+        return printErr("Failed to open \"%s\" for writing the file list: %s\n", pcszPath, strerror(errno));
+#endif
+
+    if (fprintf(pFile, "%s := \\\n", pcszVariableName) <= 0)
+    {
+        fclose(pFile);
+        return printErr("Error writing to the makefile list.\n");
+    }
+
+    *ppFile = pFile;
+    return 0;
+}
+
+
+/**
+ * Adds the given file to the makefile list.
+ *
+ * @returns Exit code.
+ * @param   pFile               The file stream of the makefile list.
+ * @param   pszFilename         The file name to add.
+ */
+static int addFileToMakefileList(FILE *pFile, char *pszFilename)
+{
+    if (pFile)
+    {
+        char *pszSlash = pszFilename;
+        while ((pszSlash = strchr(pszSlash, '\\')) != NULL)
+            *pszSlash++ = '/';
+
+        if (fprintf(pFile, "\t%s \\\n", pszFilename) <= 0)
+            return printErr("Error adding file to makefile list.\n");
+    }
+    return 0;
+}
+
+
+/**
+ * Closes the makefile list.
+ *
+ * @returns Exit code derived from @a rc.
+ * @param   pFile               The file stream of the makefile list.
+ * @param   rc                  The current exit code.
+ */
+static int closeMakefileList(FILE *pFile, int rc)
+{
+    fprintf(pFile, "\n\n");
+    if (fclose(pFile))
+        return printErr("Error closing the file list file: %s\n", strerror(errno));
+    return rc;
+}
+
+
+/**
+ * Reads in a file.
+ *
+ * @returns Exit code.
+ * @param   pcszFile            The path to the file.
+ * @param   ppszFile            Where to return the buffer.
+ * @param   pcchFile            Where to return the file size.
+ */
+static int readFile(const char *pcszFile, char **ppszFile, size_t *pcchFile)
+{
+    FILE          *pFile;
+    struct stat    FileStat;
+    int            rc;
+
+    if (stat(pcszFile, &FileStat))
+        return printErr("Failed to stat \"%s\": %s\n", pcszFile, strerror(errno));
+
+    pFile = fopen(pcszFile, "r");
+    if (!pFile)
+        return printErr("Failed to open \"%s\": %s\n", pcszFile, strerror(errno));
+
+    *ppszFile = (char *)malloc(FileStat.st_size + 1);
+    if (*ppszFile)
+    {
+        errno = 0;
+        size_t cbRead = fread(*ppszFile, 1, FileStat.st_size, pFile);
+        if (   cbRead <= (size_t)FileStat.st_size
+            && (cbRead > 0 || !ferror(pFile)) )
+        {
+            if (ftell(pFile) == FileStat.st_size) /* (\r\n vs \n in the DOS world) */
+            {
+                (*ppszFile)[cbRead] = '\0';
+                if (pcchFile)
+                    *pcchFile = (size_t)cbRead;
+
+                fclose(pFile);
+                return 0;
+            }
+        }
+
+        rc = printErr("Error reading \"%s\": %s\n", pcszFile, strerror(errno));
+        free(*ppszFile);
+        *ppszFile = NULL;
+    }
+    else
+        rc = printErr("Failed to allocate %lu bytes\n", (unsigned long)(FileStat.st_size + 1));
+    fclose(pFile);
+    return rc;
+}
+
+
+/**
+ * Checks whether the sub-file already exists and has the exact
+ * same content.
+ *
+ * @returns @c true if the existing file matches exactly, otherwise @c false.
+ * @param   pcszFilename    The path to the file.
+ * @param   pcszSubContent  The content to write.
+ * @param   cchSubContent   The length of the content.
+ */
+static bool compareSubFile(const char *pcszFilename, const char *pcszSubContent, size_t cchSubContent)
+{
+    struct stat     FileStat;
+    if (stat(pcszFilename, &FileStat))
+        return false;
+    if ((size_t)FileStat.st_size < cchSubContent)
+        return false;
+
+    size_t cchExisting;
+    char  *pszExisting;
+    int rc = readFile(pcszFilename, &pszExisting, &cchExisting);
+    if (rc)
+        return false;
+
+    bool fRc = cchExisting == cchSubContent
+            && !memcmp(pcszSubContent, pszExisting, cchSubContent);
+    free(pszExisting);
+
+    return fRc;
+}
+
+
+/**
+ * Writes out a sub-file.
+ *
+ * @returns exit code.
+ * @param   pcszFilename    The path to the sub-file.
+ * @param   pcszSubContent  The content of the file.
+ * @param   cchSubContent   The size of the content.
+ */
+static int writeSubFile(const char *pcszFilename, const char *pcszSubContent, size_t cchSubContent)
+{
+    FILE   *pFile = fopen(pcszFilename, "w");
+    if (!pFile)
+#ifdef _MSC_VER
+        return printErr("Failed to open \"%s\" for writing: %s (win32: %d)\n", pcszFilename, strerror(errno), _doserrno);
+#else
+        return printErr("Failed to open \"%s\" for writing: %s\n", pcszFilename, strerror(errno));
+#endif
+
+    errno = 0;
+    int rc = 0;
+    if (fwrite(pcszSubContent, cchSubContent, 1, pFile) != 1)
+        rc = printErr("Error writing \"%s\": %s\n", pcszFilename, strerror(errno));
+
+    errno = 0;
+    int rc2 = fclose(pFile);
+    if (rc2 == EOF)
+        rc = printErr("Error closing \"%s\": %s\n", pcszFilename, strerror(errno));
+    return rc;
+}
+
+
+/**
+ * Does the actual file splitting.
+ *
+ * @returns exit code.
+ * @param   pcszOutDir      Path to the output directory.
+ * @param   pcszContent     The content to split up.
+ * @param   pFileList       The file stream of the makefile list.  Can be NULL.
+ */
+static int splitFile(const char *pcszOutDir, const char *pcszContent, FILE *pFileList)
+{
+    static char const   s_szBeginMarker[] = "\n// ##### BEGINFILE \"";
+    static char const   s_szEndMarker[]   = "\n// ##### ENDFILE";
+    const size_t        cchBeginMarker    = sizeof(s_szBeginMarker) - 1;
+    const char         *pcszSearch        = pcszContent;
+    size_t const        cchOutDir         = strlen(pcszOutDir);
+    unsigned long       cFilesWritten     = 0;
+    unsigned long       cFilesUnchanged   = 0;
+    int                 rc                = 0;
+
+    do
+    {
+        /* find begin marker */
+        const char *pcszBegin = strstr(pcszSearch, s_szBeginMarker);
+        if (!pcszBegin)
+            break;
+
+        /* find line after begin marker */
+        const char *pcszLineAfterBegin = strchr(pcszBegin + cchBeginMarker, '\n');
+        if (!pcszLineAfterBegin)
+            return printErr("No newline after begin-file marker found.\n");
+        ++pcszLineAfterBegin;
+
+        /* find filename end quote in begin marker line */
+        const char *pcszStartFilename = pcszBegin + cchBeginMarker;
+        const char *pcszEndQuote = (const char *)memchr(pcszStartFilename, '\"', pcszLineAfterBegin - pcszStartFilename);
+        if (!pcszEndQuote)
+            return printErr("Can't parse filename after begin-file marker (line %lu).\n",
+                            lineNumber(pcszContent, s_szBeginMarker));
+
+        /* find end marker */
+        const char *pcszEnd = strstr(pcszLineAfterBegin, s_szEndMarker);
+        if (!pcszEnd)
+            return printErr("No matching end-line marker for begin-file marker found (line %lu).\n",
+                            lineNumber(pcszContent, s_szBeginMarker));
+
+        /* construct output filename */
+        size_t cchFilename = pcszEndQuote - pcszStartFilename;
+        char  *pszFilename = (char *)malloc(cchOutDir + 1 + cchFilename + 1);
+        if (!pszFilename)
+            return printErr("Can't allocate memory for filename.\n");
+
+        memcpy(pszFilename, pcszOutDir, cchOutDir);
+        pszFilename[cchOutDir] = '/';
+        memcpy(pszFilename + cchOutDir + 1, pcszStartFilename, cchFilename);
+        pszFilename[cchFilename + 1 + cchOutDir] = '\0';
+
+        /* Write the file only if necessary. */
+        if (compareSubFile(pszFilename, pcszLineAfterBegin, pcszEnd - pcszLineAfterBegin))
+            cFilesUnchanged++;
+        else
+        {
+            rc = writeSubFile(pszFilename, pcszLineAfterBegin, pcszEnd - pcszLineAfterBegin);
+            cFilesWritten++;
+        }
+
+        if (!rc)
+            rc = addFileToMakefileList(pFileList, pszFilename);
+
+        free(pszFilename);
+
+        pcszSearch = pcszEnd;
+    } while (rc == 0 && pcszSearch);
+
+    printf("filesplitter: Out of %lu files: %lu rewritten, %lu unchanged. (%s)\n",
+           cFilesWritten + cFilesUnchanged, cFilesWritten, cFilesUnchanged, pcszOutDir);
+    return rc;
+}
+
+
+int main(int argc, char *argv[])
+{
+    int rc = 0;
+
+    if (argc == 3 || argc == 5)
+    {
+        struct stat DirStat;
+        if (   stat(argv[2], &DirStat) == 0
+            && S_ISDIR(DirStat.st_mode))
+        {
+            char   *pszContent;
+            rc = readFile(argv[1], &pszContent, NULL);
+            if (!rc)
+            {
+                FILE *pFileList = NULL;
+                if (argc == 5)
+                    rc = openMakefileList(argv[3], argv[4], &pFileList);
+
+                if (argc < 4 || pFileList)
+                    rc = splitFile(argv[2], pszContent, pFileList);
+
+                if (pFileList)
+                    rc = closeMakefileList(pFileList, rc);
+                free(pszContent);
+            }
+        }
+        else
+            rc = printErr("Given argument \"%s\" is not a valid directory.\n", argv[2]);
+    }
+    else
+        rc = printErr("Syntax error: usage: filesplitter <infile> <outdir> [<list.kmk> <kmkvar>]\n");
+    return rc;
+}