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/************************************************************
Copyright (c) 1994 by Silicon Graphics Computer Systems, Inc.
Permission to use, copy, modify, and distribute this
software and its documentation for any purpose and without
fee is hereby granted, provided that the above copyright
notice appear in all copies and that both that copyright
notice and this permission notice appear in supporting
documentation, and that the name of Silicon Graphics not be
used in advertising or publicity pertaining to distribution
of the software without specific prior written permission.
Silicon Graphics makes no representation about the suitability
of this software for any purpose. It is provided "as is"
without any express or implied warranty.
SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
GRAPHICS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH
THE USE OR PERFORMANCE OF THIS SOFTWARE.
********************************************************/
#include <errno.h>
#include <limits.h>
#include <stdlib.h>
#include "xkbcommon/xkbcommon.h"
#include "XKBcommonint.h"
#include "utils.h"
#include "xkbpath.h"
/**
* Extract the first token from an include statement.
* @param str_inout Input statement, modified in-place. Can be passed in
* repeatedly. If str_inout is NULL, the parsing has completed.
* @param file_rtrn Set to the include file to be used.
* @param map_rtrn Set to whatever comes after ), if any.
* @param nextop_rtrn Set to the next operation in the complete statement.
* @param extra_data Set to the string between ( and ), if any.
*
* @return True if parsing was succcessful, False for an illegal string.
*
* Example: "evdev+aliases(qwerty)"
* str_inout = aliases(qwerty)
* nextop_retrn = +
* extra_data = NULL
* file_rtrn = evdev
* map_rtrn = NULL
*
* 2nd run with "aliases(qwerty)"
* str_inout = NULL
* file_rtrn = aliases
* map_rtrn = qwerty
* extra_data = NULL
* nextop_retrn = ""
*
*/
Bool
XkbParseIncludeMap(char **str_inout, char **file_rtrn, char **map_rtrn,
char *nextop_rtrn, char **extra_data)
{
char *tmp, *str, *next;
str = *str_inout;
if ((*str == '+') || (*str == '|'))
{
*file_rtrn = *map_rtrn = NULL;
*nextop_rtrn = *str;
next = str + 1;
}
else if (*str == '%')
{
*file_rtrn = *map_rtrn = NULL;
*nextop_rtrn = str[1];
next = str + 2;
}
else
{
/* search for tokens inside the string */
next = strpbrk(str, "|+");
if (next)
{
/* set nextop_rtrn to \0, next to next character */
*nextop_rtrn = *next;
*next++ = '\0';
}
else
{
*nextop_rtrn = '\0';
next = NULL;
}
/* search for :, store result in extra_data */
tmp = strchr(str, ':');
if (tmp != NULL)
{
*tmp++ = '\0';
*extra_data = uDupString(tmp);
}
else
{
*extra_data = NULL;
}
tmp = strchr(str, '(');
if (tmp == NULL)
{
*file_rtrn = uDupString(str);
*map_rtrn = NULL;
}
else if (str[0] == '(')
{
free(*extra_data);
return False;
}
else
{
*tmp++ = '\0';
*file_rtrn = uDupString(str);
str = tmp;
tmp = strchr(str, ')');
if ((tmp == NULL) || (tmp[1] != '\0'))
{
free(*file_rtrn);
free(*extra_data);
return False;
}
*tmp++ = '\0';
*map_rtrn = uDupString(str);
}
}
if (*nextop_rtrn == '\0')
*str_inout = NULL;
else if ((*nextop_rtrn == '|') || (*nextop_rtrn == '+'))
*str_inout = next;
else
return False;
return True;
}
/***====================================================================***/
/**
* Return the xkb directory based on the type.
*/
const char *
XkbDirectoryForInclude(unsigned type)
{
switch (type)
{
case XkmSemanticsFile:
return "semantics";
case XkmLayoutFile:
return "layout";
case XkmKeymapFile:
return "keymap";
case XkmKeyNamesIndex:
return "keycodes";
case XkmTypesIndex:
return "types";
case XkmSymbolsIndex:
return "symbols";
case XkmCompatMapIndex:
return "compat";
case XkmGeometryFile:
case XkmGeometryIndex:
return "geometry";
case XkmRulesFile:
return "rules";
default:
return "";
}
}
/***====================================================================***/
/**
* Search for the given file name in the include directories.
*
* @param context the XKB context containing the include paths
* @param type one of XkbTypesIndex, XkbCompatMapIndex, ..., or
* XkbSemanticsFile, XkmKeymapFile, ...
* @param pathReturn is set to the full path of the file if found.
*
* @return an FD to the file or NULL. If NULL is returned, the value of
* pathRtrn is undefined.
*/
FILE *
XkbFindFileInPath(struct xkb_context *context,
const char *name, unsigned type, char **pathRtrn)
{
size_t i;
int ret;
FILE *file = NULL;
char buf[PATH_MAX];
const char *typeDir;
typeDir = XkbDirectoryForInclude(type);
for (i = 0; i < xkb_context_num_include_paths(context); i++)
{
ret = snprintf(buf, sizeof(buf), "%s/%s/%s",
xkb_context_include_path_get(context, i), typeDir, name);
if (ret >= (ssize_t)sizeof(buf))
{
ERROR("File name (%s/%s/%s) too long\n",
xkb_context_include_path_get(context, i), typeDir, name);
ACTION("Ignored\n");
continue;
}
file = fopen(buf, "r");
if (file == NULL) {
ERROR("Couldn't open file (%s/%s/%s): %s\n",
xkb_context_include_path_get(context, i), typeDir, name,
strerror(-errno));
ACTION("Ignored\n");
continue;
}
break;
}
if ((file != NULL) && (pathRtrn != NULL))
*pathRtrn = strdup(buf);
return file;
}
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