mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-25 16:19:47 +08:00
775 lines
16 KiB
C
775 lines
16 KiB
C
/*
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* $Id: fixincl.c,v 1.1 1998/03/20 16:19:41 korbb Exp $
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*
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* Install modified versions of certain ANSI-incompatible system header
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* files which are fixed to work correctly with ANSI C and placed in a
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* directory that GNU C will search.
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*
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* See README-fixinc for more information.
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*
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* fixincl is free software.
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*
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* You may redistribute it and/or modify it under the terms of the
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* GNU General Public License, as published by the Free Software
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* Foundation; either version 2, or (at your option) any later version.
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*
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* fixincl is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with fixincl. See the file "COPYING". If not,
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* write to: The Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/stropts.h>
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#include <sys/wait.h>
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#include <signal.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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#include <stropts.h>
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#include <poll.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include "regex.h"
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#include "server.h"
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#define tSCC static const char
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#define tCC const char
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#define tSC static char
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typedef int tSuccess;
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#define FAILURE ((tSuccess)-1)
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#define SUCCESS ((tSuccess) 0)
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#define PROBLEM ((tSuccess) 1)
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#define SUCCEEDED( p ) ((p) == SUCCESS)
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#define SUCCESSFUL( p ) SUCCEEDED( p )
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#define FAILED( p ) ((p) < SUCCESS)
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#define HADGLITCH( p ) ((p) > SUCCESS)
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#define NUL '\0'
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typedef enum
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{
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TT_TEST, TT_EGREP, TT_NEGREP
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}
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teTestType;
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typedef struct test_desc tTestDesc;
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struct test_desc
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{
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teTestType type;
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const char *pzTest;
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regex_t *pTestRegex;
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};
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typedef enum
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{
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PATCH_SED, PATCH_SHELL
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}
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tePatch;
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typedef struct patch_desc tPatchDesc;
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typedef struct fix_desc tFixDesc;
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struct fix_desc
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{
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const char *pzFixName;
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const char *pzFileList;
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regex_t *pListRegex;
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int testCt;
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tTestDesc *pTestDesc;
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const char **papzPatchArgs;
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};
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char *pzDestDir = (char *) NULL;
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char *pzSrcDir = (char *) NULL;
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pid_t chainHead = (pid_t) - 1;
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const char zInclQuote[] = "^[ \t]*#[ \t]*include[ \t]*\"[^/]";
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regex_t inclQuoteRegex;
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char zFileNameBuf[0x8000];
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char *loadFile (const char *pzFile);
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void process (char *data, const char *dir, const char *file);
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void runCompiles (void);
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#include "fixincl.x"
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int
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main (argc, argv)
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int argc;
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char **argv;
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{
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static const char zGnuLib[] =
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"This file is part of the GNU C Library";
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#ifndef NO_BOGOSITY_LIMITS
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size_t loopCt;
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#endif
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char *apzNames[128];
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size_t fileNameCt;
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if (argc != 1)
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{
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if (argc != 2)
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{
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fputs ("fixincl ERROR: files specified on command line (not stdin)\n",
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stderr);
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exit (EXIT_FAILURE);
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}
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if (strcmp (argv[1], "-v") == 0)
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{
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fputs ("$Id: fixincl.c,v 1.1 1998/03/20 16:19:41 korbb Exp $\n", stderr);
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exit (EXIT_SUCCESS);
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}
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freopen (argv[1], "r", stdin);
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}
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pzDestDir = getenv ("DESTDIR");
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if (pzDestDir == (char *) NULL)
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{
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fprintf (stderr, "fixincl ERROR: %s cannot find destination dir\n"
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"\t(`DESTDIR' must be an environment variable)\n", *argv);
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exit (EXIT_FAILURE);
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}
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pzSrcDir = getenv ("SRCDIR");
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if (pzSrcDir == (char *) NULL)
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{
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fprintf (stderr, "fixincl ERROR: %s cannot find source dir\n"
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"\t(`SRCDIR' must be an environment variable)\n", *argv);
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exit (EXIT_FAILURE);
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}
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runCompiles ();
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#ifndef NO_BOGOSITY_LIMITS
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for (;;)
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{
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char *pzBuf;
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pid_t child;
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/*
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* Only the parent process can read from stdin without
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* confusing the world. (How does the child tell the
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* parent to skip forward? Pipes and files behave differently.)
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*/
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for (fileNameCt = 0, pzBuf = zFileNameBuf;
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(fileNameCt < 128)
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&& (pzBuf
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< (zFileNameBuf + sizeof (zFileNameBuf) - MAXPATHLEN));
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)
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{
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if (fgets (pzBuf, MAXPATHLEN, stdin) == (char *) NULL)
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break;
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while (isspace (*pzBuf))
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pzBuf++;
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apzNames[fileNameCt++] = pzBuf;
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pzBuf += strlen (pzBuf);
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while (isspace (pzBuf[-1]))
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pzBuf--;
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*pzBuf++ = '\0';
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}
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if (fileNameCt == 0)
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return EXIT_SUCCESS;
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child = fork ();
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if (child == NULLPROCESS)
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break;
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if (child == NOPROCESS)
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{
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fprintf (stderr, "Error %d (%s) forking in main\n",
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errno, strerror (errno));
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exit (EXIT_FAILURE);
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}
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waitpid (child, (int *) NULL, 0);
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}
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#else
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#error "NON-BOGUS LIMITS NOT SUPPORTED?!?!"
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#endif
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/*
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* For every file specified in stdandard in
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* (except as throttled for bogus reasons)...
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*/
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for (loopCt = 0; loopCt < fileNameCt; loopCt++)
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{
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char *pzData;
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char *pzFile = apzNames[loopCt];
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if (access (pzFile, R_OK) != 0)
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{
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int erno = errno;
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fprintf (stderr, "Cannot access %s from %s\n\terror %d (%s)\n",
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pzFile, getcwd ((char *) NULL, MAXPATHLEN),
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erno, strerror (erno));
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}
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else if (pzData = loadFile (pzFile),
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(pzData != (char *) NULL))
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{
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if (strstr (pzData, zGnuLib) == (char *) NULL)
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process (pzData, pzDestDir, pzFile);
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free ((void *) pzData);
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}
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}
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return EXIT_SUCCESS;
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}
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char *
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loadFile (pzFile)
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const char *pzFile;
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{
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char *pzDta;
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size_t fileSize;
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{
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struct stat stbf;
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if (stat (pzFile, &stbf) != 0)
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{
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fprintf (stderr, "error %d (%s) stat-ing %s\n",
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errno, strerror (errno), pzFile);
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return (char *) NULL;
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}
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fileSize = stbf.st_size;
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}
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if (fileSize == 0)
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return (char *) NULL;
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pzDta = (char *) malloc ((fileSize + 16) & ~0x00F);
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if (pzDta == (char *) NULL)
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{
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fprintf (stderr, "error: could not malloc %d bytes\n",
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fileSize);
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exit (EXIT_FAILURE);
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}
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{
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FILE *fp = fopen (pzFile, "r");
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size_t sizeLeft = fileSize;
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char *readPtr = pzDta;
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if (fp == (FILE *) NULL)
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{
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fprintf (stderr, "error %d (%s) opening %s\n", errno,
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strerror (errno), pzFile);
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free ((void *) pzDta);
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return (char *) NULL;
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}
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do
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{
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size_t sizeRead = fread ((void *) readPtr, 1, sizeLeft, fp);
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if (sizeRead == 0)
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{
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if (feof (fp))
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break;
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if (ferror (fp))
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{
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fprintf (stderr, "error %d (%s) reading %s\n", errno,
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strerror (errno), pzFile);
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free ((void *) pzDta);
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fclose (fp);
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return (char *) NULL;
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}
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}
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readPtr += sizeRead;
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sizeLeft -= sizeRead;
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}
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while (sizeLeft != 0);
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*readPtr = '\0';
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fclose (fp);
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return pzDta;
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}
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}
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void
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runCompiles ()
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{
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tSCC zBadComp[] = "fixincl ERROR: cannot compile %s regex for %s\n"
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"\texpr = `%s'\n" "\terror %s\n";
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tFixDesc *pFD = fixDescList;
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int fixCt = FIX_COUNT;
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tTestDesc *pTD;
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int tstCt;
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int reCt = REGEX_COUNT;
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const char *pzErr;
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regex_t *pRegex = (regex_t *) malloc (REGEX_COUNT * sizeof (regex_t));
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if (pRegex == (regex_t *) NULL)
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{
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fprintf (stderr, "fixincl ERROR: cannot allocate %d bytes for regex\n",
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REGEX_COUNT * sizeof (regex_t));
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exit (EXIT_FAILURE);
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}
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re_set_syntax (RE_SYNTAX_EGREP);
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pzErr = re_compile_pattern (zInclQuote, strlen (zInclQuote),
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&inclQuoteRegex);
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if (pzErr != (char *) NULL)
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{
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fprintf (stderr, zBadComp, "quoted include", "runCompiles",
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zInclQuote, pzErr);
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exit (EXIT_FAILURE);
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}
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/*
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* FOR every fixup, ...
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*/
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for (;;)
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{
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pTD = pFD->pTestDesc;
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tstCt = pFD->testCt;
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/*
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* FOR every test for the fixup, ...
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*/
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while (--tstCt >= 0)
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{
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switch (pTD->type)
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{
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case TT_EGREP:
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case TT_NEGREP:
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if (--reCt < 0)
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{
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fputs ("out of RE's\n", stderr);
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exit (EXIT_FAILURE);
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}
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pTD->pTestRegex = pRegex++;
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pzErr = re_compile_pattern (pTD->pzTest,
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strlen (pTD->pzTest),
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pTD->pTestRegex);
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if (pzErr != (char *) NULL)
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{
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fprintf (stderr, zBadComp, "select test", pFD->pzFixName,
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pTD->pzTest, pzErr);
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exit (EXIT_FAILURE);
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}
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}
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pTD++;
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}
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if (--fixCt <= 0)
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break;
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pFD++;
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}
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}
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FILE *
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createFile (pzFile)
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const char *pzFile;
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{
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int fd;
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FILE *pf;
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char fname[MAXPATHLEN];
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sprintf (fname, "%s/%s", pzDestDir, pzFile);
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unlink (fname);
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fd = open (fname, O_WRONLY | O_CREAT);
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if ((fd < 0) && (errno == ENOENT))
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{
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char *pzDir = strchr (fname + 1, '/');
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struct stat stbf;
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while (pzDir != (char *) NULL)
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{
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*pzDir = NUL;
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if (stat (fname, &stbf) < 0)
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{
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mkdir (fname, S_IFDIR | S_IRWXU | S_IRGRP | S_IXGRP
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| S_IROTH | S_IXOTH);
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}
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*pzDir = '/';
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pzDir = strchr (pzDir + 1, '/');
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}
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fd = open (fname, O_WRONLY | O_CREAT);
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}
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if (fd < 0)
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{
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fprintf (stderr, "Error %d (%s) creating %s\n",
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errno, strerror (errno), fname);
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exit (EXIT_FAILURE);
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}
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fprintf (stderr, "Fixed: %s\n", pzFile);
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pf = fdopen (fd, "w");
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#ifdef LATER
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{
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static const char zHdr[] =
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"/*\n"
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" * DO NOT EDIT THIS FILE.\n"
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" *\n"
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" * It has been auto-edited by fixincludes from /usr/include/%s\n"
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" * This had to be done to correct non-standard usages in the\n"
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" * original, manufacturer supplied header file.\n"
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" */\n\n";
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fprintf (pf, zHdr, pzFile);
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}
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#endif
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return pf;
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}
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tSuccess
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testTest (pTest)
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tTestDesc *pTest;
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{
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char *pzRes;
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tSuccess res = FAILURE;
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static char zCmdBuf[4096];
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tSCC zCmdFmt[] = "if ( test %s ) > /dev/null 2>&1\n"
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"then echo TRUE\n" "else echo FALSE\n" "fi";
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sprintf (zCmdBuf, zCmdFmt, pTest->pzTest);
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pzRes = runShell (zCmdBuf);
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if (*pzRes == 'T')
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res = SUCCESS;
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free ((void *) pzRes);
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return res;
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}
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tSuccess
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egrepTest (pzDta, pTest)
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char *pzDta;
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tTestDesc *pTest;
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{
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regmatch_t match;
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#ifndef NO_BOGOSITY
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if (pTest->pTestRegex == 0)
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fprintf (stderr, "fixincl ERROR RE not compiled: `%s'\n", pTest->pzTest);
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#endif
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if (regexec (pTest->pTestRegex, pzDta, 1, &match, 0) == 0)
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return SUCCESS;
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return FAILURE;
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}
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void
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extractQuotedFiles (pzDta, pzFile, pMatch)
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char *pzDta;
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const char *pzFile;
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regmatch_t *pMatch;
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{
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char *pzDirEnd = strrchr (pzFile, '/');
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char *pzInclQuot = pzDta;
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fprintf (stderr, "Quoted includes in %s\n", pzFile);
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/*
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* Set "pzFile" to point to the containing subdirectory of the source
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* If there is none, then it is in our current direcory, ".".
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*/
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if (pzDirEnd == (char *) NULL)
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pzFile = ".";
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else
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*pzDirEnd = '\0';
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for (;;)
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{
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pzInclQuot += pMatch->rm_so;
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/*
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* Skip forward to the included file name
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*/
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while (isspace (*pzInclQuot))
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pzInclQuot++;
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while (isspace (*++pzInclQuot));
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pzInclQuot += sizeof ("include") - 1;
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while (*pzInclQuot++ != '"');
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/*
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* Print the source directory and the subdirectory of the file
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* in question.
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*/
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printf ("%s %s/", pzSrcDir, pzFile);
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pzDirEnd = pzInclQuot;
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/*
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* Append to the directory the relative path of the desired file
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*/
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while (*pzInclQuot != '"')
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putc (*pzInclQuot++, stdout);
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/*
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* Now print the destination directory appended with the relative
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* path of the desired file
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*/
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printf (" %s/%s/", pzDestDir, pzFile);
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while (*pzDirEnd != '"')
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putc (*pzDirEnd++, stdout);
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/*
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* End of entry
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*/
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putc ('\n', stdout);
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/*
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* Find the next entry
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*/
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if (regexec (&inclQuoteRegex, pzInclQuot, 1, pMatch, 0) != 0)
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break;
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}
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}
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|
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/*
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* Process the potential fixes for a particular include file
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*/
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void
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process (pzDta, pzDir, pzFile)
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char *pzDta;
|
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const char *pzDir;
|
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const char *pzFile;
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{
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static char zEnvFile[1024] =
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{"file="};
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tFixDesc *pFD = fixDescList;
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int todoCt = FIX_COUNT;
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tFdPair fdp =
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{-1, -1};
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/*
|
|
* IF this is the first time through,
|
|
* THEN put the 'file' environment variable into the environment.
|
|
* This is used by some of the subject shell scripts and tests.
|
|
*/
|
|
if (zEnvFile[5] == NUL)
|
|
putenv (zEnvFile);
|
|
|
|
/*
|
|
* Ghastly as it is, this actually updates the value of the variable:
|
|
*
|
|
* putenv(3C) C Library Functions putenv(3C)
|
|
*
|
|
* DESCRIPTION
|
|
* putenv() makes the value of the environment variable name
|
|
* equal to value by altering an existing variable or creating
|
|
* a new one. In either case, the string pointed to by string
|
|
* becomes part of the environment, so altering the string will
|
|
* change the environment. string points to a string of the
|
|
* form ``name=value.'' The space used by string is no longer
|
|
* used once a new string-defining name is passed to putenv().
|
|
*/
|
|
strcpy (zEnvFile + 5, pzFile);
|
|
chainHead = NOPROCESS;
|
|
|
|
/*
|
|
* For every fix in our fix list, ...
|
|
*/
|
|
for (; todoCt > 0; pFD++, todoCt--)
|
|
{
|
|
tTestDesc *pTD;
|
|
int tstCt;
|
|
tSuccess egrepRes;
|
|
|
|
/*
|
|
* IF there is a file name restriction,
|
|
* THEN ensure the current file name matches one in the pattern
|
|
*/
|
|
if (pFD->pzFileList != (char *) NULL)
|
|
{
|
|
const char *pzFil = pzFile;
|
|
const char *pzScn = pFD->pzFileList;
|
|
size_t nmLen;
|
|
|
|
while ((pzFil[0] == '.') && (pzFil[1] == '/'))
|
|
pzFil += 2;
|
|
nmLen = strlen (pzFil);
|
|
|
|
for (;;)
|
|
{
|
|
pzScn = strstr (pzScn + 1, pzFil);
|
|
if (pzScn == (char *) NULL)
|
|
goto nextFix;
|
|
if ((pzScn[-1] == '|') && (pzScn[nmLen] == '|'))
|
|
break;
|
|
}
|
|
}
|
|
|
|
egrepRes = PROBLEM;
|
|
|
|
/*
|
|
* IF there are no tests
|
|
* THEN we always run the fixup
|
|
*/
|
|
for (pTD = pFD->pTestDesc, tstCt = pFD->testCt;
|
|
tstCt-- > 0;
|
|
pTD++)
|
|
{
|
|
switch (pTD->type)
|
|
{
|
|
case TT_TEST:
|
|
/*
|
|
* IF *any* of the shell tests fail,
|
|
* THEN do not process the fix.
|
|
*/
|
|
if (!SUCCESSFUL (testTest (pTD)))
|
|
goto nextFix;
|
|
break;
|
|
|
|
case TT_EGREP:
|
|
/*
|
|
* IF we have not had a successful egrep test
|
|
* *AND* this test does not pass,
|
|
* THEN mark the egrep test as failing. It starts
|
|
* out as a "PROBLEM", meaning that if we do not
|
|
* encounter any egrep tests, then we will let it pass.
|
|
*/
|
|
if ((!SUCCESSFUL (egrepRes))
|
|
&& (!SUCCESSFUL (egrepTest (pzDta, pTD))))
|
|
|
|
egrepRes = FAILURE;
|
|
|
|
break;
|
|
|
|
case TT_NEGREP:
|
|
/*
|
|
* IF *any* of the negative egrep tests fail,
|
|
* THEN do not process the fix.
|
|
*/
|
|
if (SUCCESSFUL (egrepTest (pzDta, pTD)))
|
|
goto nextFix;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* IF there were no egrep tests *OR* at least one passed, ...
|
|
*/
|
|
if (!FAILED (egrepRes))
|
|
{
|
|
fprintf (stderr, "Applying %-32s to %s\n",
|
|
pFD->pzFixName, pzFile);
|
|
|
|
if (fdp.readFd == -1)
|
|
{
|
|
fdp.readFd = open (pzFile, O_RDONLY);
|
|
if (fdp.readFd < 0)
|
|
{
|
|
fprintf (stderr, "Error %d (%s) opening %s\n", errno,
|
|
strerror (errno), pzFile);
|
|
exit (EXIT_FAILURE);
|
|
}
|
|
}
|
|
|
|
for (;;)
|
|
{
|
|
int newFd = chainOpen (fdp.readFd,
|
|
(tpChar *) pFD->papzPatchArgs,
|
|
(chainHead == -1)
|
|
? &chainHead : (pid_t *) NULL);
|
|
if (newFd != -1)
|
|
{
|
|
fdp.readFd = newFd;
|
|
break;
|
|
}
|
|
|
|
fprintf (stderr, "Error %d (%s) starting filter process "
|
|
"for %s\n", errno, strerror (errno),
|
|
pFD->pzFixName);
|
|
|
|
if (errno != EAGAIN)
|
|
exit (EXIT_FAILURE);
|
|
sleep (1);
|
|
}
|
|
}
|
|
|
|
nextFix:;
|
|
}
|
|
|
|
/*
|
|
* IF after all the tests we did not start any patch programs,
|
|
* THEN quit now.
|
|
*/
|
|
if (fdp.readFd < 0)
|
|
return;
|
|
|
|
{
|
|
FILE *inFp = fdopen (fdp.readFd, "r");
|
|
FILE *oFp = (FILE *) NULL;
|
|
char *pzCmp = pzDta;
|
|
|
|
for (;;)
|
|
{
|
|
int ch;
|
|
|
|
ch = getc (inFp);
|
|
if (ch == EOF)
|
|
break;
|
|
|
|
if (oFp != (FILE *) NULL)
|
|
putc (ch, oFp);
|
|
|
|
else if (ch != *pzCmp)
|
|
{
|
|
oFp = createFile (pzFile);
|
|
if (pzCmp != pzDta)
|
|
{
|
|
char c = *pzCmp;
|
|
*pzCmp = NUL;
|
|
fputs (pzDta, oFp);
|
|
*pzCmp = c;
|
|
}
|
|
putc (ch, oFp);
|
|
|
|
}
|
|
else
|
|
pzCmp++;
|
|
}
|
|
|
|
if (oFp != (FILE *) NULL)
|
|
{
|
|
regmatch_t match;
|
|
|
|
fchmod (fileno (oFp), S_IRUSR | S_IRGRP | S_IROTH);
|
|
fclose (oFp);
|
|
if (regexec (&inclQuoteRegex, pzDta, 1, &match, 0) == 0)
|
|
extractQuotedFiles (pzDta, pzFile, &match);
|
|
}
|
|
|
|
fclose (inFp);
|
|
}
|
|
|
|
close (fdp.readFd);
|
|
}
|