xserver pixman mesa git update 4 nov 2011

1 files changed, 1176 insertions, 1167 deletions

diff --git a/xorg-server/hw/xfree86/parser/scan.c b/xorg-server/hw/xfree86/parser/scan.c
index b36e58e0f..99b325717 100644
--- a/xorg-server/hw/xfree86/parser/scan.c
+++ b/xorg-server/hw/xfree86/parser/scan.c
@@ -1,1167 +1,1176 @@
-/* 

- * Copyright (c) 1997  Metro Link Incorporated

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"), 

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included in

- * all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF

- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

- * SOFTWARE.

- * 

- * Except as contained in this notice, the name of the Metro Link shall not be

- * used in advertising or otherwise to promote the sale, use or other dealings

- * in this Software without prior written authorization from Metro Link.

- * 

- */

-/*

- * Copyright (c) 1997-2003 by The XFree86 Project, Inc.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included in

- * all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR

- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,

- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

- * OTHER DEALINGS IN THE SOFTWARE.

- *

- * Except as contained in this notice, the name of the copyright holder(s)

- * and author(s) shall not be used in advertising or otherwise to promote

- * the sale, use or other dealings in this Software without prior written

- * authorization from the copyright holder(s) and author(s).

- */

-

-

-/* View/edit this file with tab stops set to 4 */

-

-#ifdef HAVE_XORG_CONFIG_H

-#include <xorg-config.h>

-#endif

-

-#include <ctype.h>

-#include <stdio.h>

-#include <stdlib.h>

-#include <string.h>

-#include <sys/types.h>

-#include <dirent.h>

-#include <unistd.h>

-#include <stdarg.h>

-#include <X11/Xdefs.h>

-#include <X11/Xfuncproto.h>

-

-#if defined(_POSIX_SOURCE)

-#include <limits.h>

-#else

-#define _POSIX_SOURCE

-#include <limits.h>

-#undef _POSIX_SOURCE

-#endif /* _POSIX_SOURCE */

-

-#if !defined(MAXHOSTNAMELEN)

-#define MAXHOSTNAMELEN 32

-#endif /* !MAXHOSTNAMELEN */

-

-/* For PATH_MAX */

-#include "misc.h"

-

-#include "Configint.h"

-#include "xf86tokens.h"

-

-#define CONFIG_BUF_LEN     1024

-#define CONFIG_MAX_FILES   64

-

-static int StringToToken (char *, xf86ConfigSymTabRec *);

-

-static struct {

-	FILE *file;

-	char *path;

-} configFiles[CONFIG_MAX_FILES];

-static const char **builtinConfig = NULL;

-static int builtinIndex = 0;

-static int configPos = 0;		/* current readers position */

-static int configLineNo = 0;	/* linenumber */

-static char *configBuf, *configRBuf;	/* buffer for lines */

-static char *configPath;		/* path to config file */

-static char *configDirPath;		/* path to config dir */

-static char *configSection = NULL;	/* name of current section being parsed */

-static int numFiles = 0;		/* number of config files */

-static int curFileIndex = 0;		/* index of current config file */

-static int pushToken = LOCK_TOKEN;

-static int eol_seen = 0;		/* private state to handle comments */

-LexRec val;

-

-/*

- * xf86getNextLine --

- *

- *  read from the configFiles FILE stream until we encounter a new

- *  line; this is effectively just a big wrapper for fgets(3).

- *

- *  xf86getToken() assumes that we will read up to the next

- *  newline; we need to grow configBuf and configRBuf as needed to

- *  support that.

- */

-

-static char*

-xf86getNextLine(void)

-{

-	static int configBufLen = CONFIG_BUF_LEN;

-	char *tmpConfigBuf, *tmpConfigRBuf;

-	int c, i, pos = 0, eolFound = 0;

-	char *ret = NULL;

-

-	/*

-	 * reallocate the string if it was grown last time (i.e., is no

-	 * longer CONFIG_BUF_LEN); we malloc the new strings first, so

-	 * that if either of the mallocs fail, we can fall back on the

-	 * existing buffer allocations

-	 */

-

-	if (configBufLen != CONFIG_BUF_LEN) {

-

-		tmpConfigBuf = malloc(CONFIG_BUF_LEN);

-		tmpConfigRBuf = malloc(CONFIG_BUF_LEN);

-

-		if (!tmpConfigBuf || !tmpConfigRBuf) {

-

-			/*

-			 * at least one of the mallocs failed; keep the old buffers

-			 * and free any partial allocations

-			 */

-

-			free(tmpConfigBuf);

-			free(tmpConfigRBuf);

-

-		} else {

-

-			/*

-			 * malloc succeeded; free the old buffers and use the new

-			 * buffers

-			 */

-

-			configBufLen = CONFIG_BUF_LEN;

-

-			free(configBuf);

-			free(configRBuf);

-

-			configBuf = tmpConfigBuf;

-			configRBuf = tmpConfigRBuf;

-		}

-	}

-

-	/* read in another block of chars */

-

-	do {

-		ret = fgets(configBuf + pos, configBufLen - pos - 1,

-			    configFiles[curFileIndex].file);

-

-		if (!ret) {

-			/*

-			 * if the file doesn't end in a newline, add one

-			 * and trigger another read

-			 */

-			if (pos != 0) {

-				strcpy(&configBuf[pos], "\n");

-				ret = configBuf;

-			} else

-				break;

-		}

-

-		/* search for EOL in the new block of chars */

-

-		for (i = pos; i < (configBufLen - 1); i++) {

-			c = configBuf[i];

-

-			if (c == '\0') break;

-

-			if ((c == '\n') || (c == '\r')) {

-				eolFound = 1;

-				break;

-			}

-		}

-

-		/*

-		 * if we didn't find EOL, then grow the string and

-		 * read in more

-		 */

-

-		if (!eolFound) {

-

-			tmpConfigBuf = realloc(configBuf, configBufLen + CONFIG_BUF_LEN);

-			tmpConfigRBuf = realloc(configRBuf, configBufLen + CONFIG_BUF_LEN);

-

-			if (!tmpConfigBuf || !tmpConfigRBuf) {

-

-				/*

-				 * at least one of the reallocations failed; use the

-				 * new allocation that succeeded, but we have to

-				 * fallback to the previous configBufLen size and use

-				 * the string we have, even though we don't have an

-				 * EOL

-				 */

-

-				if (tmpConfigBuf) configBuf = tmpConfigBuf;

-				if (tmpConfigRBuf) configRBuf = tmpConfigRBuf;

-

-				break;

-

-			} else {

-

-				/* reallocation succeeded */

-

-				configBuf = tmpConfigBuf;

-				configRBuf = tmpConfigRBuf;

-				pos = i;

-				configBufLen += CONFIG_BUF_LEN;

-			}

-		}

-

-	} while (!eolFound);

-

-	return ret;

-}

-

-/* 

- * xf86getToken --

- *      Read next Token from the config file. Handle the global variable

- *      pushToken.

- */

-int

-xf86getToken (xf86ConfigSymTabRec * tab)

-{

-	int c, i;

-

-	/* 

-	 * First check whether pushToken has a different value than LOCK_TOKEN.

-	 * In this case rBuf[] contains a valid STRING/TOKEN/NUMBER. But in the

-	 * oth * case the next token must be read from the input.

-	 */

-	if (pushToken == EOF_TOKEN)

-		return EOF_TOKEN;

-	else if (pushToken == LOCK_TOKEN)

-	{

-		/*

-		 * eol_seen is only set for the first token after a newline.

-		 */

-		eol_seen = 0;

-

-		c = configBuf[configPos];

-

-		/* 

-		 * Get start of next Token. EOF is handled,

-		 * whitespaces are skipped. 

-		 */

-

-again:

-		if (!c)

-		{

-			char *ret;

-			if (numFiles > 0)

-				ret = xf86getNextLine();

-			else {

-				if (builtinConfig[builtinIndex] == NULL)

-					ret = NULL;

-				else {

-					ret = strncpy(configBuf, builtinConfig[builtinIndex],

-							CONFIG_BUF_LEN);

-					builtinIndex++;

-				}

-			}

-			if (ret == NULL)

-			{

-				/*

-				 * if necessary, move to the next file and

-				 * read the first line

-				 */

-				if (curFileIndex + 1 < numFiles) {

-					curFileIndex++;

-					configLineNo = 0;

-					goto again;

-				}

-				else

-					return pushToken = EOF_TOKEN;

-			}

-			configLineNo++;

-			configPos = 0;

-			eol_seen = 1;

-		}

-

-		i = 0;

-		for (;;) {

-			c = configBuf[configPos++];

-			configRBuf[i++] = c;

-			switch (c) {

-				case ' ':

-				case '\t':

-				case '\r':

-					continue;

-				case '\n':

-					i = 0;

-					continue;

-			}

-			break;

-		}

-		if (c == '\0')

-			goto again;

-

-		if (c == '#')

-		{

-			do

-			{

-				configRBuf[i++] = (c = configBuf[configPos++]);

-			}

-			while ((c != '\n') && (c != '\r') && (c != '\0'));

-			configRBuf[i] = '\0';

-			/* XXX no private copy.

-			 * Use xf86addComment when setting a comment.

-			 */

-			val.str = configRBuf;

-			return COMMENT;

-		}

-

-		/* GJA -- handle '-' and ','  * Be careful: "-hsync" is a keyword. */

-		else if ((c == ',') && !isalpha (configBuf[configPos]))

-		{

-			return COMMA;

-		}

-		else if ((c == '-') && !isalpha (configBuf[configPos]))

-		{

-			return DASH;

-		}

-

-		/* 

-		 * Numbers are returned immediately ...

-		 */

-		if (isdigit (c))

-		{

-			int base;

-

-			if (c == '0')

-				if ((configBuf[configPos] == 'x') ||

-					(configBuf[configPos] == 'X'))

-                                {

-					base = 16;

-                                        val.numType = PARSE_HEX;

-                                }

-				else

-                                {

-					base = 8;

-                                        val.numType = PARSE_OCTAL;

-                                }

-			else

-                        {

-				base = 10;

-                                val.numType = PARSE_DECIMAL;

-                        }

-

-			configRBuf[0] = c;

-			i = 1;

-			while (isdigit (c = configBuf[configPos++]) ||

-				   (c == '.') || (c == 'x') || (c == 'X') ||

-				   ((base == 16) && (((c >= 'a') && (c <= 'f')) ||

-									 ((c >= 'A') && (c <= 'F')))))

-				configRBuf[i++] = c;

-			configPos--;		/* GJA -- one too far */

-			configRBuf[i] = '\0';

-			val.num = strtoul (configRBuf, NULL, 0);

-			val.realnum = atof (configRBuf);

-			return NUMBER;

-		}

-

-		/* 

-		 * All Strings START with a \" ...

-		 */

-		else if (c == '\"')

-		{

-			i = -1;

-			do

-			{

-				configRBuf[++i] = (c = configBuf[configPos++]);

-			}

-			while ((c != '\"') && (c != '\n') && (c != '\r') && (c != '\0'));

-			configRBuf[i] = '\0';

-			val.str = malloc (strlen (configRBuf) + 1);

-			strcpy (val.str, configRBuf);	/* private copy ! */

-			return STRING;

-		}

-

-		/* 

-		 * ... and now we MUST have a valid token.  The search is

-		 * handled later along with the pushed tokens.

-		 */

-		else

-		{

-			configRBuf[0] = c;

-			i = 0;

-			do

-			{

-				configRBuf[++i] = (c = configBuf[configPos++]);

-			}

-			while ((c != ' ') && (c != '\t') && (c != '\n') && (c != '\r') && (c != '\0') && (c != '#'));

-			--configPos;

-			configRBuf[i] = '\0';

-			i = 0;

-		}

-

-	}

-	else

-	{

-

-		/* 

-		 * Here we deal with pushed tokens. Reinitialize pushToken again. If

-		 * the pushed token was NUMBER || STRING return them again ...

-		 */

-		int temp = pushToken;

-		pushToken = LOCK_TOKEN;

-

-		if (temp == COMMA || temp == DASH)

-			return temp;

-		if (temp == NUMBER || temp == STRING)

-			return temp;

-	}

-

-	/* 

-	 * Joop, at last we have to lookup the token ...

-	 */

-	if (tab)

-	{

-		i = 0;

-		while (tab[i].token != -1)

-			if (xf86nameCompare (configRBuf, tab[i].name) == 0)

-				return tab[i].token;

-			else

-				i++;

-	}

-

-	return ERROR_TOKEN;		/* Error catcher */

-}

-

-int

-xf86getSubToken (char **comment)

-{

-	int token;

-

-	for (;;) {

-		token = xf86getToken(NULL);

-		if (token == COMMENT) {

-			if (comment)

-				*comment = xf86addComment(*comment, val.str);

-		}

-		else

-			return token;

-	}

-	/*NOTREACHED*/

-}

-

-int

-xf86getSubTokenWithTab (char **comment, xf86ConfigSymTabRec *tab)

-{

-	int token;

-

-	for (;;) {

-		token = xf86getToken(tab);

-		if (token == COMMENT) {

-			if (comment)

-				*comment = xf86addComment(*comment, val.str);

-		}

-		else

-			return token;

-	}

-	/*NOTREACHED*/

-}

-

-void

-xf86unGetToken (int token)

-{

-	pushToken = token;

-}

-

-char *

-xf86tokenString (void)

-{

-	return configRBuf;

-}

-

-int

-xf86pathIsAbsolute(const char *path)

-{

-	if (path && path[0] == '/')

-		return 1;

-	return 0;

-}

-

-/* A path is "safe" if it is relative and if it contains no ".." elements. */

-int

-xf86pathIsSafe(const char *path)

-{

-	if (xf86pathIsAbsolute(path))

-		return 0;

-

-	/* Compare with ".." */

-	if (!strcmp(path, ".."))

-		return 0;

-

-	/* Look for leading "../" */

-	if (!strncmp(path, "../", 3))

-		return 0;

-

-	/* Look for trailing "/.." */

-	if ((strlen(path) > 3) && !strcmp(path + strlen(path) - 3, "/.."))

-		return 0;

-

-	/* Look for "/../" */

-	if (strstr(path, "/../"))

-		return 0;

-

-	return 1;

-}

-

-/*

- * This function substitutes the following escape sequences:

- *

- *    %A    cmdline argument as an absolute path (must be absolute to match)

- *    %R    cmdline argument as a relative path

- *    %S    cmdline argument as a "safe" path (relative, and no ".." elements)

- *    %X    default config file name ("xorg.conf")

- *    %H    hostname

- *    %E    config file environment ($XORGCONFIG) as an absolute path

- *    %F    config file environment ($XORGCONFIG) as a relative path

- *    %G    config file environment ($XORGCONFIG) as a safe path

- *    %P    projroot

- *    %C    sysconfdir

- *    %D    datadir

- *    %%    %

- */

-

-#ifndef XCONFIGFILE

-#define XCONFIGFILE	"xorg.conf"

-#endif

-#ifndef XCONFIGDIR

-#define XCONFIGDIR	"xorg.conf.d"

-#endif

-#ifndef XCONFIGSUFFIX

-#define XCONFIGSUFFIX	".conf"

-#endif

-#ifndef PROJECTROOT

-#define PROJECTROOT	"/usr/X11R6"

-#endif

-#ifndef SYSCONFDIR

-#define SYSCONFDIR	PROJECTROOT "/etc"

-#endif

-#ifndef DATADIR

-#define DATADIR		PROJECTROOT "/share"

-#endif

-#ifndef XCONFENV

-#define XCONFENV	"XORGCONFIG"

-#endif

-

-#define BAIL_OUT		do {									\

-							free(result);				\

-							return NULL;						\

-						} while (0)

-

-#define CHECK_LENGTH	do {									\

-							if (l > PATH_MAX) {					\

-								BAIL_OUT;						\

-							}									\

-						} while (0)

-

-#define APPEND_STR(s)	do {									\

-							if (strlen(s) + l > PATH_MAX) {		\

-								BAIL_OUT;						\

-							} else {							\

-								strcpy(result + l, s);			\

-								l += strlen(s);					\

-							}									\

-						} while (0)

-

-static char *

-DoSubstitution(const char *template, const char *cmdline, const char *projroot,

-				int *cmdlineUsed, int *envUsed,

-				const char *XConfigFile)

-{

-	char *result;

-	int i, l;

-	static const char *env = NULL;

-	static char *hostname = NULL;

-

-	if (!template)

-		return NULL;

-

-	if (cmdlineUsed)

-		*cmdlineUsed = 0;

-	if (envUsed)

-		*envUsed = 0;

-

-	result = malloc(PATH_MAX + 1);

-	l = 0;

-	for (i = 0; template[i]; i++) {

-		if (template[i] != '%') {

-			result[l++] = template[i];

-			CHECK_LENGTH;

-		} else {

-			switch (template[++i]) {

-			case 'A':

-				if (cmdline && xf86pathIsAbsolute(cmdline)) {

-					APPEND_STR(cmdline);

-					if (cmdlineUsed)

-						*cmdlineUsed = 1;

-				} else

-					BAIL_OUT;

-				break;

-			case 'R':

-				if (cmdline && !xf86pathIsAbsolute(cmdline)) {

-					APPEND_STR(cmdline);

-					if (cmdlineUsed)

-						*cmdlineUsed = 1;

-				} else 

-					BAIL_OUT;

-				break;

-			case 'S':

-				if (cmdline && xf86pathIsSafe(cmdline)) {

-					APPEND_STR(cmdline);

-					if (cmdlineUsed)

-						*cmdlineUsed = 1;

-				} else 

-					BAIL_OUT;

-				break;

-			case 'X':

-				APPEND_STR(XConfigFile);

-				break;

-			case 'H':

-				if (!hostname) {

-					if ((hostname = malloc(MAXHOSTNAMELEN + 1))) {

-						if (gethostname(hostname, MAXHOSTNAMELEN) == 0) {

-							hostname[MAXHOSTNAMELEN] = '\0';

-						} else {

-							free(hostname);

-							hostname = NULL;

-						}

-					}

-				}

-				if (hostname)

-					APPEND_STR(hostname);

-				break;

-			case 'E':

-				if (!env)

-					env = getenv(XCONFENV);

-				if (env && xf86pathIsAbsolute(env)) {

-					APPEND_STR(env);

-					if (envUsed)

-						*envUsed = 1;

-				} else

-					BAIL_OUT;

-				break;

-			case 'F':

-				if (!env)

-					env = getenv(XCONFENV);

-				if (env && !xf86pathIsAbsolute(env)) {

-					APPEND_STR(env);

-					if (envUsed)

-						*envUsed = 1;

-				} else

-					BAIL_OUT;

-				break;

-			case 'G':

-				if (!env)

-					env = getenv(XCONFENV);

-				if (env && xf86pathIsSafe(env)) {

-					APPEND_STR(env);

-					if (envUsed)

-						*envUsed = 1;

-				} else

-					BAIL_OUT;

-				break;

-			case 'P':

-				if (projroot && xf86pathIsAbsolute(projroot))

-					APPEND_STR(projroot);

-				else

-					BAIL_OUT;

-				break;

-			case 'C':

-				APPEND_STR(SYSCONFDIR);

-				break;

-			case 'D':

-				APPEND_STR(DATADIR);

-				break;

-			case '%':

-				result[l++] = '%';

-				CHECK_LENGTH;

-				break;

-			default:

-				fprintf(stderr, "invalid escape %%%c found in path template\n",

-						template[i]);

-				BAIL_OUT;

-				break;

-			}

-		}

-	}

-#ifdef DEBUG

-	fprintf(stderr, "Converted `%s' to `%s'\n", template, result);

-#endif

-	return result;

-}

-

-/*

- * Given some searching parameters, locate and open the xorg config file.

- */

-static char *

-OpenConfigFile(const char *path, const char *cmdline, const char *projroot,

-	       const char *confname)

-{

-	char *filepath = NULL;

-	char *pathcopy;

-	const char *template;

-	int cmdlineUsed = 0;

-	FILE *file = NULL;

-

-	pathcopy = strdup(path);

-	for (template = strtok(pathcopy, ","); template && !file;

-	     template = strtok(NULL, ",")) {

-		filepath = DoSubstitution(template, cmdline, projroot,

-					  &cmdlineUsed, NULL, confname);

-		if (!filepath)

-			continue;

-		if (cmdline && !cmdlineUsed) {

-			free(filepath);

-			filepath = NULL;

-			continue;

-		}

-		file = fopen(filepath, "r");

-		if (!file) {

-			free(filepath);

-			filepath = NULL;

-		}

-	}

-

-	free(pathcopy);

-	if (file) {

-		configFiles[numFiles].file = file;

-		configFiles[numFiles].path = strdup(filepath);

-		numFiles++;

-	}

-	return filepath;

-}

-

-/*

- * Match non-hidden files in the xorg config directory with a .conf

- * suffix. This filter is passed to scandir(3).

- */

-static int

-ConfigFilter(const struct dirent *de)

-{

-	const char *name = de->d_name;

-	size_t len;

-	size_t suflen = strlen(XCONFIGSUFFIX);

-

-	if (!name || name[0] == '.')

-		return 0;

-	len = strlen(name);

-	if(len <= suflen)

-		return 0;

-	if (strcmp(&name[len-suflen], XCONFIGSUFFIX) != 0)

-		return 0;

-	return 1;

-}

-

-static Bool

-AddConfigDirFiles(const char *dirpath, struct dirent **list, int num)

-{

-	int i;

-	Bool openedFile = FALSE;

-	Bool warnOnce = FALSE;

-

-	for (i = 0; i < num; i++) {

-		char *path;

-		FILE *file;

-

-		if (numFiles >= CONFIG_MAX_FILES) {

-			if (!warnOnce) {

-				ErrorF("Maximum number of configuration "

-				       "files opened\n");

-				warnOnce = TRUE;

-			}

-			free(list[i]);

-			continue;

-		}

-

-		path = malloc(PATH_MAX + 1);

-		snprintf(path, PATH_MAX + 1, "%s/%s", dirpath,

-			 list[i]->d_name);

-		free(list[i]);

-		file = fopen(path, "r");

-		if (!file) {

-			free(path);

-			continue;

-		}

-		openedFile = TRUE;

-

-		configFiles[numFiles].file = file;

-		configFiles[numFiles].path = path;

-		numFiles++;

-	}

-

-	return openedFile;

-}

-

-/*

- * Given some searching parameters, locate and open the xorg config

- * directory. The directory does not need to contain config files.

- */

-static char *

-OpenConfigDir(const char *path, const char *cmdline, const char *projroot,

-	      const char *confname)

-{

-	char *dirpath, *pathcopy;

-	const char *template;

-	Bool found = FALSE;

-	int cmdlineUsed = 0;

-

-	pathcopy = strdup(path);

-	for (template = strtok(pathcopy, ","); template && !found;

-	     template = strtok(NULL, ",")) {

-		struct dirent **list = NULL;

-		int num;

-

-		dirpath = DoSubstitution(template, cmdline, projroot,

-					 &cmdlineUsed, NULL, confname);

-		if (!dirpath)

-			continue;

-		if (cmdline && !cmdlineUsed) {

-			free(dirpath);

-			dirpath = NULL;

-			continue;

-		}

-

-		/* match files named *.conf */

-		num = scandir(dirpath, &list, ConfigFilter, alphasort);

-		found = AddConfigDirFiles(dirpath, list, num);

-		if (!found) {

-			free(dirpath);

-			dirpath = NULL;

-			free(list);

-		}

-	}

-

-	free(pathcopy);

-	return dirpath;

-}

-

-/*

- * xf86initConfigFiles -- Setup global variables and buffers.

- */

-void

-xf86initConfigFiles(void)

-{

-	curFileIndex = 0;

-	configPos = 0;

-	configLineNo = 0;

-	pushToken = LOCK_TOKEN;

-

-	configBuf = malloc(CONFIG_BUF_LEN);

-	configRBuf = malloc(CONFIG_BUF_LEN);

-	configBuf[0] = '\0';	/* sanity ... */

-}

-

-/*

- * xf86openConfigFile --

- *

- * This function take a config file search path (optional), a command-line

- * specified file name (optional) and the ProjectRoot path (optional) and

- * locates and opens a config file based on that information.  If a

- * command-line file name is specified, then this function fails if none

- * of the located files.

- *

- * The return value is a pointer to the actual name of the file that was

- * opened.  When no file is found, the return value is NULL.

- *

- * The escape sequences allowed in the search path are defined above.

- *

- */

-

-#ifndef DEFAULT_CONF_PATH

-#define DEFAULT_CONF_PATH	"/etc/X11/%S," \

-							"%P/etc/X11/%S," \

-							"/etc/X11/%G," \

-							"%P/etc/X11/%G," \

-							"/etc/X11/%X-%M," \

-							"/etc/X11/%X," \

-							"/etc/%X," \

-							"%P/etc/X11/%X.%H," \

-							"%P/etc/X11/%X-%M," \

-							"%P/etc/X11/%X," \

-							"%P/lib/X11/%X.%H," \

-							"%P/lib/X11/%X-%M," \

-							"%P/lib/X11/%X"

-#endif

-

-const char *

-xf86openConfigFile(const char *path, const char *cmdline, const char *projroot)

-{

-	if (!path || !path[0])

-		path = DEFAULT_CONF_PATH;

-	if (!projroot || !projroot[0])

-		projroot = PROJECTROOT;

-

-	/* Search for a config file */

-	configPath = OpenConfigFile(path, cmdline, projroot, XCONFIGFILE);

-	return configPath;

-}

-

-/*

- * xf86openConfigDirFiles --

- *

- * This function take a config directory search path (optional), a

- * command-line specified directory name (optional) and the ProjectRoot path

- * (optional) and locates and opens a config directory based on that

- * information.  If a command-line name is specified, then this function

- * fails if it is not found.

- *

- * The return value is a pointer to the actual name of the direcoty that was

- * opened.  When no directory is found, the return value is NULL.

- *

- * The escape sequences allowed in the search path are defined above.

- *

- */

-const char *

-xf86openConfigDirFiles(const char *path, const char *cmdline,

-		       const char *projroot)

-{

-	if (!path || !path[0])

-		path = DEFAULT_CONF_PATH;

-	if (!projroot || !projroot[0])

-		projroot = PROJECTROOT;

-

-	/* Search for the multiconf directory */

-	configDirPath = OpenConfigDir(path, cmdline, projroot, XCONFIGDIR);

-	return configDirPath;

-}

-

-void

-xf86closeConfigFile (void)

-{

-	int i;

-

-	free (configPath);

-	configPath = NULL;

-	free (configDirPath);

-	configDirPath = NULL;

-	free (configRBuf);

-	configRBuf = NULL;

-	free (configBuf);

-	configBuf = NULL;

-

-	if (numFiles == 0) {

-		builtinConfig = NULL;

-		builtinIndex = 0;

-	}

-	for (i = 0; i < numFiles; i++) {

-		fclose(configFiles[i].file);

-		configFiles[i].file = NULL;

-		free(configFiles[i].path);

-		configFiles[i].path = NULL;

-	}

-	numFiles = 0;

-}

-

-void

-xf86setBuiltinConfig(const char *config[])

-{

-	builtinConfig = config;

-}

-

-void

-xf86parseError (char *format,...)

-{

-	va_list ap;

-	char *filename = numFiles ? configFiles[curFileIndex].path :

-			 "<builtin configuration>";

-

-	ErrorF ("Parse error on line %d of section %s in file %s\n\t",

-		 configLineNo, configSection, filename);

-	va_start (ap, format);

-	VErrorF (format, ap);

-	va_end (ap);

-

-	ErrorF ("\n");

-}

-

-void

-xf86validationError (char *format,...)

-{

-	va_list ap;

-	char *filename = numFiles ? configFiles[curFileIndex].path :

-			 "<builtin configuration>";

-

-	ErrorF ("Data incomplete in file %s\n\t", filename);

-	va_start (ap, format);

-	VErrorF (format, ap);

-	va_end (ap);

-

-	ErrorF ("\n");

-}

-

-void

-xf86setSection (char *section)

-{

-	free(configSection);

-	configSection = strdup(section);

-}

-

-/* 

- * xf86getToken --

- *  Lookup a string if it is actually a token in disguise.

- */

-int

-xf86getStringToken (xf86ConfigSymTabRec * tab)

-{

-	return StringToToken (val.str, tab);

-}

-

-static int

-StringToToken (char *str, xf86ConfigSymTabRec * tab)

-{

-	int i;

-

-	for (i = 0; tab[i].token != -1; i++)

-	{

-		if (!xf86nameCompare (tab[i].name, str))

-			return tab[i].token;

-	}

-	return ERROR_TOKEN;

-}

-

-

-/* 

- * Compare two names.  The characters '_', ' ', and '\t' are ignored

- * in the comparison.

- */

-int

-xf86nameCompare (const char *s1, const char *s2)

-{

-	char c1, c2;

-

-	if (!s1 || *s1 == 0) {

-		if (!s2 || *s2 == 0)

-			return 0;

-		else

-			return 1;

-		}

-

-	while (*s1 == '_' || *s1 == ' ' || *s1 == '\t')

-		s1++;

-	while (*s2 == '_' || *s2 == ' ' || *s2 == '\t')

-		s2++;

-	c1 = (isupper (*s1) ? tolower (*s1) : *s1);

-	c2 = (isupper (*s2) ? tolower (*s2) : *s2);

-	while (c1 == c2)

-	{

-		if (c1 == '\0')

-			return 0;

-		s1++;

-		s2++;

-		while (*s1 == '_' || *s1 == ' ' || *s1 == '\t')

-			s1++;

-		while (*s2 == '_' || *s2 == ' ' || *s2 == '\t')

-			s2++;

-		c1 = (isupper (*s1) ? tolower (*s1) : *s1);

-		c2 = (isupper (*s2) ? tolower (*s2) : *s2);

-	}

-	return c1 - c2;

-}

-

-char *

-xf86addComment(char *cur, char *add)

-{

-	char *str;

-	int len, curlen, iscomment, hasnewline = 0, endnewline;

-

-	if (add == NULL || add[0] == '\0')

-		return cur;

-

-	if (cur) {

-		curlen = strlen(cur);

-		if (curlen)

-		    hasnewline = cur[curlen - 1] == '\n';

-		eol_seen = 0;

-	}

-	else

-		curlen = 0;

-

-	str = add;

-	iscomment = 0;

-	while (*str) {

-	    if (*str != ' ' && *str != '\t')

-		break;

-	    ++str;

-	}

-	iscomment = (*str == '#');

-

-	len = strlen(add);

-	endnewline = add[len - 1] == '\n';

-	len +=  1 + iscomment + (!hasnewline) + (!endnewline) + eol_seen;

-

-	if ((str = realloc(cur, len + curlen)) == NULL)

-		return cur;

-

-	cur = str;

-

-	if (eol_seen || (curlen && !hasnewline))

-		cur[curlen++] = '\n';

-	if (!iscomment)

-		cur[curlen++] = '#';

-	strcpy(cur + curlen, add);

-	if (!endnewline)

-		strcat(cur, "\n");

-

-	return cur;

-}

-

-Bool

-xf86getBoolValue(Bool *val, const char *str)

-{

-	if (!val || !str)

-		return FALSE;

-	if (*str == '\0') {

-		*val = TRUE;

-	} else {

-		if (xf86nameCompare(str, "1") == 0)

-			*val = TRUE;

-		else if (xf86nameCompare(str, "on") == 0)

-			*val = TRUE;

-		else if (xf86nameCompare(str, "true") == 0)

-			*val = TRUE;

-		else if (xf86nameCompare(str, "yes") == 0)

-			*val = TRUE;

-		else if (xf86nameCompare(str, "0") == 0)

-			*val = FALSE;

-		else if (xf86nameCompare(str, "off") == 0)

-			*val = FALSE;

-		else if (xf86nameCompare(str, "false") == 0)

-			*val = FALSE;

-		else if (xf86nameCompare(str, "no") == 0)

-			*val = FALSE;

-		else

-			return FALSE;

-	}

-	return TRUE;

-}

+/* 
+ * Copyright (c) 1997  Metro Link Incorporated
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"), 
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+ * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ * 
+ * Except as contained in this notice, the name of the Metro Link shall not be
+ * used in advertising or otherwise to promote the sale, use or other dealings
+ * in this Software without prior written authorization from Metro Link.
+ * 
+ */
+/*
+ * Copyright (c) 1997-2003 by The XFree86 Project, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of the copyright holder(s)
+ * and author(s) shall not be used in advertising or otherwise to promote
+ * the sale, use or other dealings in this Software without prior written
+ * authorization from the copyright holder(s) and author(s).
+ */
+
+
+/* View/edit this file with tab stops set to 4 */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <X11/Xdefs.h>
+#include <X11/Xfuncproto.h>
+
+#if defined(_POSIX_SOURCE)
+#include <limits.h>
+#else
+#define _POSIX_SOURCE
+#include <limits.h>
+#undef _POSIX_SOURCE
+#endif /* _POSIX_SOURCE */
+
+#if !defined(MAXHOSTNAMELEN)
+#define MAXHOSTNAMELEN 32
+#endif /* !MAXHOSTNAMELEN */
+
+/* For PATH_MAX */
+#include "misc.h"
+
+#include "Configint.h"
+#include "xf86tokens.h"
+
+#define CONFIG_BUF_LEN     1024
+#define CONFIG_MAX_FILES   64
+
+static int StringToToken (char *, xf86ConfigSymTabRec *);
+
+static struct {
+	FILE *file;
+	char *path;
+} configFiles[CONFIG_MAX_FILES];
+static const char **builtinConfig = NULL;
+static int builtinIndex = 0;
+static int configPos = 0;		/* current readers position */
+static int configLineNo = 0;	/* linenumber */
+static char *configBuf, *configRBuf;	/* buffer for lines */
+static char *configPath;		/* path to config file */
+static char *configDirPath;		/* path to config dir */
+static char *configSection = NULL;	/* name of current section being parsed */
+static int numFiles = 0;		/* number of config files */
+static int curFileIndex = 0;		/* index of current config file */
+static int pushToken = LOCK_TOKEN;
+static int eol_seen = 0;		/* private state to handle comments */
+LexRec val;
+
+/*
+ * xf86getNextLine --
+ *
+ *  read from the configFiles FILE stream until we encounter a new
+ *  line; this is effectively just a big wrapper for fgets(3).
+ *
+ *  xf86getToken() assumes that we will read up to the next
+ *  newline; we need to grow configBuf and configRBuf as needed to
+ *  support that.
+ */
+
+static char*
+xf86getNextLine(void)
+{
+	static int configBufLen = CONFIG_BUF_LEN;
+	char *tmpConfigBuf, *tmpConfigRBuf;
+	int c, i, pos = 0, eolFound = 0;
+	char *ret = NULL;
+
+	/*
+	 * reallocate the string if it was grown last time (i.e., is no
+	 * longer CONFIG_BUF_LEN); we malloc the new strings first, so
+	 * that if either of the mallocs fail, we can fall back on the
+	 * existing buffer allocations
+	 */
+
+	if (configBufLen != CONFIG_BUF_LEN) {
+
+		tmpConfigBuf = malloc(CONFIG_BUF_LEN);
+		tmpConfigRBuf = malloc(CONFIG_BUF_LEN);
+
+		if (!tmpConfigBuf || !tmpConfigRBuf) {
+
+			/*
+			 * at least one of the mallocs failed; keep the old buffers
+			 * and free any partial allocations
+			 */
+
+			free(tmpConfigBuf);
+			free(tmpConfigRBuf);
+
+		} else {
+
+			/*
+			 * malloc succeeded; free the old buffers and use the new
+			 * buffers
+			 */
+
+			configBufLen = CONFIG_BUF_LEN;
+
+			free(configBuf);
+			free(configRBuf);
+
+			configBuf = tmpConfigBuf;
+			configRBuf = tmpConfigRBuf;
+		}
+	}
+
+	/* read in another block of chars */
+
+	do {
+		ret = fgets(configBuf + pos, configBufLen - pos - 1,
+			    configFiles[curFileIndex].file);
+
+		if (!ret) {
+			/*
+			 * if the file doesn't end in a newline, add one
+			 * and trigger another read
+			 */
+			if (pos != 0) {
+				strcpy(&configBuf[pos], "\n");
+				ret = configBuf;
+			} else
+				break;
+		}
+
+		/* search for EOL in the new block of chars */
+
+		for (i = pos; i < (configBufLen - 1); i++) {
+			c = configBuf[i];
+
+			if (c == '\0') break;
+
+			if ((c == '\n') || (c == '\r')) {
+				eolFound = 1;
+				break;
+			}
+		}
+
+		/*
+		 * if we didn't find EOL, then grow the string and
+		 * read in more
+		 */
+
+		if (!eolFound) {
+
+			tmpConfigBuf = realloc(configBuf, configBufLen + CONFIG_BUF_LEN);
+			tmpConfigRBuf = realloc(configRBuf, configBufLen + CONFIG_BUF_LEN);
+
+			if (!tmpConfigBuf || !tmpConfigRBuf) {
+
+				/*
+				 * at least one of the reallocations failed; use the
+				 * new allocation that succeeded, but we have to
+				 * fallback to the previous configBufLen size and use
+				 * the string we have, even though we don't have an
+				 * EOL
+				 */
+
+				if (tmpConfigBuf) configBuf = tmpConfigBuf;
+				if (tmpConfigRBuf) configRBuf = tmpConfigRBuf;
+
+				break;
+
+			} else {
+
+				/* reallocation succeeded */
+
+				configBuf = tmpConfigBuf;
+				configRBuf = tmpConfigRBuf;
+				pos = i;
+				configBufLen += CONFIG_BUF_LEN;
+			}
+		}
+
+	} while (!eolFound);
+
+	return ret;
+}
+
+/* 
+ * xf86getToken --
+ *      Read next Token from the config file. Handle the global variable
+ *      pushToken.
+ */
+int
+xf86getToken (xf86ConfigSymTabRec * tab)
+{
+	int c, i;
+
+	/* 
+	 * First check whether pushToken has a different value than LOCK_TOKEN.
+	 * In this case rBuf[] contains a valid STRING/TOKEN/NUMBER. But in the
+	 * oth * case the next token must be read from the input.
+	 */
+	if (pushToken == EOF_TOKEN)
+		return EOF_TOKEN;
+	else if (pushToken == LOCK_TOKEN)
+	{
+		/*
+		 * eol_seen is only set for the first token after a newline.
+		 */
+		eol_seen = 0;
+
+		c = configBuf[configPos];
+
+		/* 
+		 * Get start of next Token. EOF is handled,
+		 * whitespaces are skipped. 
+		 */
+
+again:
+		if (!c)
+		{
+			char *ret;
+			if (numFiles > 0)
+				ret = xf86getNextLine();
+			else {
+				if (builtinConfig[builtinIndex] == NULL)
+					ret = NULL;
+				else {
+					ret = strncpy(configBuf, builtinConfig[builtinIndex],
+							CONFIG_BUF_LEN);
+					builtinIndex++;
+				}
+			}
+			if (ret == NULL)
+			{
+				/*
+				 * if necessary, move to the next file and
+				 * read the first line
+				 */
+				if (curFileIndex + 1 < numFiles) {
+					curFileIndex++;
+					configLineNo = 0;
+					goto again;
+				}
+				else
+					return pushToken = EOF_TOKEN;
+			}
+			configLineNo++;
+			configPos = 0;
+			eol_seen = 1;
+		}
+
+		i = 0;
+		for (;;) {
+			c = configBuf[configPos++];
+			configRBuf[i++] = c;
+			switch (c) {
+				case ' ':
+				case '\t':
+				case '\r':
+					continue;
+				case '\n':
+					i = 0;
+					continue;
+			}
+			break;
+		}
+		if (c == '\0')
+			goto again;
+
+		if (c == '#')
+		{
+			do
+			{
+				configRBuf[i++] = (c = configBuf[configPos++]);
+			}
+			while ((c != '\n') && (c != '\r') && (c != '\0'));
+			configRBuf[i] = '\0';
+			/* XXX no private copy.
+			 * Use xf86addComment when setting a comment.
+			 */
+			val.str = configRBuf;
+			return COMMENT;
+		}
+
+		/* GJA -- handle '-' and ','  * Be careful: "-hsync" is a keyword. */
+		else if ((c == ',') && !isalpha (configBuf[configPos]))
+		{
+			return COMMA;
+		}
+		else if ((c == '-') && !isalpha (configBuf[configPos]))
+		{
+			return DASH;
+		}
+
+		/* 
+		 * Numbers are returned immediately ...
+		 */
+		if (isdigit (c))
+		{
+			int base;
+
+			if (c == '0')
+				if ((configBuf[configPos] == 'x') ||
+					(configBuf[configPos] == 'X'))
+                                {
+					base = 16;
+                                        val.numType = PARSE_HEX;
+                                }
+				else
+                                {
+					base = 8;
+                                        val.numType = PARSE_OCTAL;
+                                }
+			else
+                        {
+				base = 10;
+                                val.numType = PARSE_DECIMAL;
+                        }
+
+			configRBuf[0] = c;
+			i = 1;
+			while (isdigit (c = configBuf[configPos++]) ||
+				   (c == '.') || (c == 'x') || (c == 'X') ||
+				   ((base == 16) && (((c >= 'a') && (c <= 'f')) ||
+									 ((c >= 'A') && (c <= 'F')))))
+				configRBuf[i++] = c;
+			configPos--;		/* GJA -- one too far */
+			configRBuf[i] = '\0';
+			val.num = strtoul (configRBuf, NULL, 0);
+			val.realnum = atof (configRBuf);
+			return NUMBER;
+		}
+
+		/* 
+		 * All Strings START with a \" ...
+		 */
+		else if (c == '\"')
+		{
+			i = -1;
+			do
+			{
+				configRBuf[++i] = (c = configBuf[configPos++]);
+			}
+			while ((c != '\"') && (c != '\n') && (c != '\r') && (c != '\0'));
+			configRBuf[i] = '\0';
+			val.str = malloc (strlen (configRBuf) + 1);
+			strcpy (val.str, configRBuf);	/* private copy ! */
+			return STRING;
+		}
+
+		/* 
+		 * ... and now we MUST have a valid token.  The search is
+		 * handled later along with the pushed tokens.
+		 */
+		else
+		{
+			configRBuf[0] = c;
+			i = 0;
+			do
+			{
+				configRBuf[++i] = (c = configBuf[configPos++]);
+			}
+			while ((c != ' ') && (c != '\t') && (c != '\n') && (c != '\r') && (c != '\0') && (c != '#'));
+			--configPos;
+			configRBuf[i] = '\0';
+			i = 0;
+		}
+
+	}
+	else
+	{
+
+		/* 
+		 * Here we deal with pushed tokens. Reinitialize pushToken again. If
+		 * the pushed token was NUMBER || STRING return them again ...
+		 */
+		int temp = pushToken;
+		pushToken = LOCK_TOKEN;
+
+		if (temp == COMMA || temp == DASH)
+			return temp;
+		if (temp == NUMBER || temp == STRING)
+			return temp;
+	}
+
+	/* 
+	 * Joop, at last we have to lookup the token ...
+	 */
+	if (tab)
+	{
+		i = 0;
+		while (tab[i].token != -1)
+			if (xf86nameCompare (configRBuf, tab[i].name) == 0)
+				return tab[i].token;
+			else
+				i++;
+	}
+
+	return ERROR_TOKEN;		/* Error catcher */
+}
+
+int
+xf86getSubToken (char **comment)
+{
+	int token;
+
+	for (;;) {
+		token = xf86getToken(NULL);
+		if (token == COMMENT) {
+			if (comment)
+				*comment = xf86addComment(*comment, val.str);
+		}
+		else
+			return token;
+	}
+	/*NOTREACHED*/
+}
+
+int
+xf86getSubTokenWithTab (char **comment, xf86ConfigSymTabRec *tab)
+{
+	int token;
+
+	for (;;) {
+		token = xf86getToken(tab);
+		if (token == COMMENT) {
+			if (comment)
+				*comment = xf86addComment(*comment, val.str);
+		}
+		else
+			return token;
+	}
+	/*NOTREACHED*/
+}
+
+void
+xf86unGetToken (int token)
+{
+	pushToken = token;
+}
+
+char *
+xf86tokenString (void)
+{
+	return configRBuf;
+}
+
+int
+xf86pathIsAbsolute(const char *path)
+{
+	if (path && path[0] == '/')
+		return 1;
+	return 0;
+}
+
+/* A path is "safe" if it is relative and if it contains no ".." elements. */
+int
+xf86pathIsSafe(const char *path)
+{
+	if (xf86pathIsAbsolute(path))
+		return 0;
+
+	/* Compare with ".." */
+	if (!strcmp(path, ".."))
+		return 0;
+
+	/* Look for leading "../" */
+	if (!strncmp(path, "../", 3))
+		return 0;
+
+	/* Look for trailing "/.." */
+	if ((strlen(path) > 3) && !strcmp(path + strlen(path) - 3, "/.."))
+		return 0;
+
+	/* Look for "/../" */
+	if (strstr(path, "/../"))
+		return 0;
+
+	return 1;
+}
+
+/*
+ * This function substitutes the following escape sequences:
+ *
+ *    %A    cmdline argument as an absolute path (must be absolute to match)
+ *    %R    cmdline argument as a relative path
+ *    %S    cmdline argument as a "safe" path (relative, and no ".." elements)
+ *    %X    default config file name ("xorg.conf")
+ *    %H    hostname
+ *    %E    config file environment ($XORGCONFIG) as an absolute path
+ *    %F    config file environment ($XORGCONFIG) as a relative path
+ *    %G    config file environment ($XORGCONFIG) as a safe path
+ *    %P    projroot
+ *    %C    sysconfdir
+ *    %D    datadir
+ *    %%    %
+ */
+
+#ifndef XCONFIGFILE
+#define XCONFIGFILE	"xorg.conf"
+#endif
+#ifndef XCONFIGDIR
+#define XCONFIGDIR	"xorg.conf.d"
+#endif
+#ifndef XCONFIGSUFFIX
+#define XCONFIGSUFFIX	".conf"
+#endif
+#ifndef PROJECTROOT
+#define PROJECTROOT	"/usr/X11R6"
+#endif
+#ifndef SYSCONFDIR
+#define SYSCONFDIR	PROJECTROOT "/etc"
+#endif
+#ifndef DATADIR
+#define DATADIR		PROJECTROOT "/share"
+#endif
+#ifndef XCONFENV
+#define XCONFENV	"XORGCONFIG"
+#endif
+
+#define BAIL_OUT		do {									\
+							free(result);				\
+							return NULL;						\
+						} while (0)
+
+#define CHECK_LENGTH	do {									\
+							if (l > PATH_MAX) {					\
+								BAIL_OUT;						\
+							}									\
+						} while (0)
+
+#define APPEND_STR(s)	do {									\
+							if (strlen(s) + l > PATH_MAX) {		\
+								BAIL_OUT;						\
+							} else {							\
+								strcpy(result + l, s);			\
+								l += strlen(s);					\
+							}									\
+						} while (0)
+
+static char *
+DoSubstitution(const char *template, const char *cmdline, const char *projroot,
+				int *cmdlineUsed, int *envUsed,
+				const char *XConfigFile)
+{
+	char *result;
+	int i, l;
+	static const char *env = NULL;
+	static char *hostname = NULL;
+
+	if (!template)
+		return NULL;
+
+	if (cmdlineUsed)
+		*cmdlineUsed = 0;
+	if (envUsed)
+		*envUsed = 0;
+
+	result = malloc(PATH_MAX + 1);
+	l = 0;
+	for (i = 0; template[i]; i++) {
+		if (template[i] != '%') {
+			result[l++] = template[i];
+			CHECK_LENGTH;
+		} else {
+			switch (template[++i]) {
+			case 'A':
+				if (cmdline && xf86pathIsAbsolute(cmdline)) {
+					APPEND_STR(cmdline);
+					if (cmdlineUsed)
+						*cmdlineUsed = 1;
+				} else
+					BAIL_OUT;
+				break;
+			case 'R':
+				if (cmdline && !xf86pathIsAbsolute(cmdline)) {
+					APPEND_STR(cmdline);
+					if (cmdlineUsed)
+						*cmdlineUsed = 1;
+				} else 
+					BAIL_OUT;
+				break;
+			case 'S':
+				if (cmdline && xf86pathIsSafe(cmdline)) {
+					APPEND_STR(cmdline);
+					if (cmdlineUsed)
+						*cmdlineUsed = 1;
+				} else 
+					BAIL_OUT;
+				break;
+			case 'X':
+				APPEND_STR(XConfigFile);
+				break;
+			case 'H':
+				if (!hostname) {
+					if ((hostname = malloc(MAXHOSTNAMELEN + 1))) {
+						if (gethostname(hostname, MAXHOSTNAMELEN) == 0) {
+							hostname[MAXHOSTNAMELEN] = '\0';
+						} else {
+							free(hostname);
+							hostname = NULL;
+						}
+					}
+				}
+				if (hostname)
+					APPEND_STR(hostname);
+				break;
+			case 'E':
+				if (!env)
+					env = getenv(XCONFENV);
+				if (env && xf86pathIsAbsolute(env)) {
+					APPEND_STR(env);
+					if (envUsed)
+						*envUsed = 1;
+				} else
+					BAIL_OUT;
+				break;
+			case 'F':
+				if (!env)
+					env = getenv(XCONFENV);
+				if (env && !xf86pathIsAbsolute(env)) {
+					APPEND_STR(env);
+					if (envUsed)
+						*envUsed = 1;
+				} else
+					BAIL_OUT;
+				break;
+			case 'G':
+				if (!env)
+					env = getenv(XCONFENV);
+				if (env && xf86pathIsSafe(env)) {
+					APPEND_STR(env);
+					if (envUsed)
+						*envUsed = 1;
+				} else
+					BAIL_OUT;
+				break;
+			case 'P':
+				if (projroot && xf86pathIsAbsolute(projroot))
+					APPEND_STR(projroot);
+				else
+					BAIL_OUT;
+				break;
+			case 'C':
+				APPEND_STR(SYSCONFDIR);
+				break;
+			case 'D':
+				APPEND_STR(DATADIR);
+				break;
+			case '%':
+				result[l++] = '%';
+				CHECK_LENGTH;
+				break;
+			default:
+				fprintf(stderr, "invalid escape %%%c found in path template\n",
+						template[i]);
+				BAIL_OUT;
+				break;
+			}
+		}
+	}
+#ifdef DEBUG
+	fprintf(stderr, "Converted `%s' to `%s'\n", template, result);
+#endif
+	return result;
+}
+
+/*
+ * Given some searching parameters, locate and open the xorg config file.
+ */
+static char *
+OpenConfigFile(const char *path, const char *cmdline, const char *projroot,
+	       const char *confname)
+{
+	char *filepath = NULL;
+	char *pathcopy;
+	const char *template;
+	int cmdlineUsed = 0;
+	FILE *file = NULL;
+
+	pathcopy = strdup(path);
+	for (template = strtok(pathcopy, ","); template && !file;
+	     template = strtok(NULL, ",")) {
+		filepath = DoSubstitution(template, cmdline, projroot,
+					  &cmdlineUsed, NULL, confname);
+		if (!filepath)
+			continue;
+		if (cmdline && !cmdlineUsed) {
+			free(filepath);
+			filepath = NULL;
+			continue;
+		}
+		file = fopen(filepath, "r");
+		if (!file) {
+			free(filepath);
+			filepath = NULL;
+		}
+	}
+
+	free(pathcopy);
+	if (file) {
+		configFiles[numFiles].file = file;
+		configFiles[numFiles].path = strdup(filepath);
+		numFiles++;
+	}
+	return filepath;
+}
+
+/*
+ * Match non-hidden files in the xorg config directory with a .conf
+ * suffix. This filter is passed to scandir(3).
+ */
+static int
+ConfigFilter(const struct dirent *de)
+{
+	const char *name = de->d_name;
+	size_t len;
+	size_t suflen = strlen(XCONFIGSUFFIX);
+
+	if (!name || name[0] == '.')
+		return 0;
+	len = strlen(name);
+	if(len <= suflen)
+		return 0;
+	if (strcmp(&name[len-suflen], XCONFIGSUFFIX) != 0)
+		return 0;
+	return 1;
+}
+
+static Bool
+AddConfigDirFiles(const char *dirpath, struct dirent **list, int num)
+{
+	int i;
+	Bool openedFile = FALSE;
+	Bool warnOnce = FALSE;
+
+	for (i = 0; i < num; i++) {
+		char *path;
+		FILE *file;
+
+		if (numFiles >= CONFIG_MAX_FILES) {
+			if (!warnOnce) {
+				ErrorF("Maximum number of configuration "
+				       "files opened\n");
+				warnOnce = TRUE;
+			}
+			free(list[i]);
+			continue;
+		}
+
+		path = malloc(PATH_MAX + 1);
+		snprintf(path, PATH_MAX + 1, "%s/%s", dirpath,
+			 list[i]->d_name);
+		free(list[i]);
+		file = fopen(path, "r");
+		if (!file) {
+			free(path);
+			continue;
+		}
+		openedFile = TRUE;
+
+		configFiles[numFiles].file = file;
+		configFiles[numFiles].path = path;
+		numFiles++;
+	}
+
+	return openedFile;
+}
+
+/*
+ * Given some searching parameters, locate and open the xorg config
+ * directory. The directory does not need to contain config files.
+ */
+static char *
+OpenConfigDir(const char *path, const char *cmdline, const char *projroot,
+	      const char *confname)
+{
+	char *dirpath, *pathcopy;
+	const char *template;
+	Bool found = FALSE;
+	int cmdlineUsed = 0;
+
+	pathcopy = strdup(path);
+	for (template = strtok(pathcopy, ","); template && !found;
+	     template = strtok(NULL, ",")) {
+		struct dirent **list = NULL;
+		int num;
+
+		dirpath = DoSubstitution(template, cmdline, projroot,
+					 &cmdlineUsed, NULL, confname);
+		if (!dirpath)
+			continue;
+		if (cmdline && !cmdlineUsed) {
+			free(dirpath);
+			dirpath = NULL;
+			continue;
+		}
+
+		/* match files named *.conf */
+		num = scandir(dirpath, &list, ConfigFilter, alphasort);
+		found = AddConfigDirFiles(dirpath, list, num);
+		if (!found) {
+			free(dirpath);
+			dirpath = NULL;
+			free(list);
+		}
+	}
+
+	free(pathcopy);
+	return dirpath;
+}
+
+/*
+ * xf86initConfigFiles -- Setup global variables and buffers.
+ */
+void
+xf86initConfigFiles(void)
+{
+	curFileIndex = 0;
+	configPos = 0;
+	configLineNo = 0;
+	pushToken = LOCK_TOKEN;
+
+	configBuf = malloc(CONFIG_BUF_LEN);
+	configRBuf = malloc(CONFIG_BUF_LEN);
+	configBuf[0] = '\0';	/* sanity ... */
+}
+
+/*
+ * xf86openConfigFile --
+ *
+ * This function take a config file search path (optional), a command-line
+ * specified file name (optional) and the ProjectRoot path (optional) and
+ * locates and opens a config file based on that information.  If a
+ * command-line file name is specified, then this function fails if none
+ * of the located files.
+ *
+ * The return value is a pointer to the actual name of the file that was
+ * opened.  When no file is found, the return value is NULL.
+ *
+ * The escape sequences allowed in the search path are defined above.
+ *
+ */
+
+#ifndef DEFAULT_CONF_PATH
+#define DEFAULT_CONF_PATH	"/etc/X11/%S," \
+							"%P/etc/X11/%S," \
+							"/etc/X11/%G," \
+							"%P/etc/X11/%G," \
+							"/etc/X11/%X-%M," \
+							"/etc/X11/%X," \
+							"/etc/%X," \
+							"%P/etc/X11/%X.%H," \
+							"%P/etc/X11/%X-%M," \
+							"%P/etc/X11/%X," \
+							"%P/lib/X11/%X.%H," \
+							"%P/lib/X11/%X-%M," \
+							"%P/lib/X11/%X"
+#endif
+
+const char *
+xf86openConfigFile(const char *path, const char *cmdline, const char *projroot)
+{
+	if (!path || !path[0])
+		path = DEFAULT_CONF_PATH;
+	if (!projroot || !projroot[0])
+		projroot = PROJECTROOT;
+
+	/* Search for a config file */
+	configPath = OpenConfigFile(path, cmdline, projroot, XCONFIGFILE);
+	return configPath;
+}
+
+/*
+ * xf86openConfigDirFiles --
+ *
+ * This function take a config directory search path (optional), a
+ * command-line specified directory name (optional) and the ProjectRoot path
+ * (optional) and locates and opens a config directory based on that
+ * information.  If a command-line name is specified, then this function
+ * fails if it is not found.
+ *
+ * The return value is a pointer to the actual name of the direcoty that was
+ * opened.  When no directory is found, the return value is NULL.
+ *
+ * The escape sequences allowed in the search path are defined above.
+ *
+ */
+const char *
+xf86openConfigDirFiles(const char *path, const char *cmdline,
+		       const char *projroot)
+{
+	if (!path || !path[0])
+		path = DEFAULT_CONF_PATH;
+	if (!projroot || !projroot[0])
+		projroot = PROJECTROOT;
+
+	/* Search for the multiconf directory */
+	configDirPath = OpenConfigDir(path, cmdline, projroot, XCONFIGDIR);
+	return configDirPath;
+}
+
+void
+xf86closeConfigFile (void)
+{
+	int i;
+
+	free (configPath);
+	configPath = NULL;
+	free (configDirPath);
+	configDirPath = NULL;
+	free (configRBuf);
+	configRBuf = NULL;
+	free (configBuf);
+	configBuf = NULL;
+
+	if (numFiles == 0) {
+		builtinConfig = NULL;
+		builtinIndex = 0;
+	}
+	for (i = 0; i < numFiles; i++) {
+		fclose(configFiles[i].file);
+		configFiles[i].file = NULL;
+		free(configFiles[i].path);
+		configFiles[i].path = NULL;
+	}
+	numFiles = 0;
+}
+
+void
+xf86setBuiltinConfig(const char *config[])
+{
+	builtinConfig = config;
+}
+
+void
+xf86parseError (char *format,...)
+{
+	va_list ap;
+	char *filename = numFiles ? configFiles[curFileIndex].path :
+			 "<builtin configuration>";
+
+	ErrorF ("Parse error on line %d of section %s in file %s\n\t",
+		 configLineNo, configSection, filename);
+	va_start (ap, format);
+	VErrorF (format, ap);
+	va_end (ap);
+
+	ErrorF ("\n");
+}
+
+void
+xf86validationError (char *format,...)
+{
+	va_list ap;
+	char *filename = numFiles ? configFiles[curFileIndex].path :
+			 "<builtin configuration>";
+
+	ErrorF ("Data incomplete in file %s\n\t", filename);
+	va_start (ap, format);
+	VErrorF (format, ap);
+	va_end (ap);
+
+	ErrorF ("\n");
+}
+
+void
+xf86setSection (char *section)
+{
+	free(configSection);
+	configSection = strdup(section);
+}
+
+/* 
+ * xf86getToken --
+ *  Lookup a string if it is actually a token in disguise.
+ */
+int
+xf86getStringToken (xf86ConfigSymTabRec * tab)
+{
+	return StringToToken (val.str, tab);
+}
+
+static int
+StringToToken (char *str, xf86ConfigSymTabRec * tab)
+{
+	int i;
+
+	for (i = 0; tab[i].token != -1; i++)
+	{
+		if (!xf86nameCompare (tab[i].name, str))
+			return tab[i].token;
+	}
+	return ERROR_TOKEN;
+}
+
+
+/* 
+ * Compare two names.  The characters '_', ' ', and '\t' are ignored
+ * in the comparison.
+ */
+int
+xf86nameCompare (const char *s1, const char *s2)
+{
+	char c1, c2;
+
+	if (!s1 || *s1 == 0) {
+		if (!s2 || *s2 == 0)
+			return 0;
+		else
+			return 1;
+		}
+
+	while (*s1 == '_' || *s1 == ' ' || *s1 == '\t')
+		s1++;
+	while (*s2 == '_' || *s2 == ' ' || *s2 == '\t')
+		s2++;
+	c1 = (isupper (*s1) ? tolower (*s1) : *s1);
+	c2 = (isupper (*s2) ? tolower (*s2) : *s2);
+	while (c1 == c2)
+	{
+		if (c1 == '\0')
+			return 0;
+		s1++;
+		s2++;
+		while (*s1 == '_' || *s1 == ' ' || *s1 == '\t')
+			s1++;
+		while (*s2 == '_' || *s2 == ' ' || *s2 == '\t')
+			s2++;
+		c1 = (isupper (*s1) ? tolower (*s1) : *s1);
+		c2 = (isupper (*s2) ? tolower (*s2) : *s2);
+	}
+	return c1 - c2;
+}
+
+char *
+xf86addComment(char *cur, char *add)
+{
+	char *str;
+	int len, curlen, iscomment, hasnewline = 0, insnewline, endnewline;
+
+	if (add == NULL || add[0] == '\0')
+		return cur;
+
+	if (cur) {
+		curlen = strlen(cur);
+		if (curlen)
+		    hasnewline = cur[curlen - 1] == '\n';
+		eol_seen = 0;
+	}
+	else
+		curlen = 0;
+
+	str = add;
+	iscomment = 0;
+	while (*str) {
+	    if (*str != ' ' && *str != '\t')
+		break;
+	    ++str;
+	}
+	iscomment = (*str == '#');
+
+	len = strlen(add);
+	endnewline = add[len - 1] == '\n';
+
+	insnewline = eol_seen || (curlen && !hasnewline);
+	if (insnewline)
+		len++;
+	if (!iscomment)
+		len++;
+	if (!endnewline)
+		len++;
+
+	/* Allocate + 1 char for '\0' terminator. */
+	str = realloc(cur, curlen + len + 1);
+	if (!str)
+		return cur;
+
+	cur = str;
+
+	if (insnewline)
+		cur[curlen++] = '\n';
+	if (!iscomment)
+		cur[curlen++] = '#';
+	strcpy(cur + curlen, add);
+	if (!endnewline)
+		strcat(cur, "\n");
+
+	return cur;
+}
+
+Bool
+xf86getBoolValue(Bool *val, const char *str)
+{
+	if (!val || !str)
+		return FALSE;
+	if (*str == '\0') {
+		*val = TRUE;
+	} else {
+		if (xf86nameCompare(str, "1") == 0)
+			*val = TRUE;
+		else if (xf86nameCompare(str, "on") == 0)
+			*val = TRUE;
+		else if (xf86nameCompare(str, "true") == 0)
+			*val = TRUE;
+		else if (xf86nameCompare(str, "yes") == 0)
+			*val = TRUE;
+		else if (xf86nameCompare(str, "0") == 0)
+			*val = FALSE;
+		else if (xf86nameCompare(str, "off") == 0)
+			*val = FALSE;
+		else if (xf86nameCompare(str, "false") == 0)
+			*val = FALSE;
+		else if (xf86nameCompare(str, "no") == 0)
+			*val = FALSE;
+		else
+			return FALSE;
+	}
+	return TRUE;
+}