diff options
Diffstat (limited to 'libX11/src/xlibi18n/lcRM.c')
| -rw-r--r-- | libX11/src/xlibi18n/lcRM.c | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/libX11/src/xlibi18n/lcRM.c b/libX11/src/xlibi18n/lcRM.c new file mode 100644 index 000000000..1ffa4ef72 --- /dev/null +++ b/libX11/src/xlibi18n/lcRM.c @@ -0,0 +1,226 @@ +/* $Xorg: lcRM.c,v 1.3 2000/08/17 19:45:19 cpqbld Exp $ */ +/* + * Copyright 1992, 1993 by TOSHIBA Corp. + * + * 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 TOSHIBA not be used in advertising + * or publicity pertaining to distribution of the software without specific, + * written prior permission. TOSHIBA make no representations about the + * suitability of this software for any purpose. It is provided "as is" + * without express or implied warranty. + * + * TOSHIBA DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING + * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL + * TOSHIBA 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. + * + * Author: Katsuhisa Yano TOSHIBA Corp. + * mopi@osa.ilab.toshiba.co.jp + * Bug fixes: Bruno Haible XFree86 Inc. + */ +/* $XFree86: xc/lib/X11/lcRM.c,v 1.4 2000/11/28 18:49:48 dawes Exp $ */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include "Xlibint.h" +#include "XlcPubI.h" +#include <stdio.h> + +/* + * Default implementation of methods for Xrm parsing. + */ + +/* ======================= Unibyte implementation ======================= */ + +/* Only for efficiency, to speed up things. */ + +/* This implementation must keep the locale, for lcname. */ +typedef struct _UbStateRec { + XLCd lcd; +} UbStateRec, *UbState; + +/* Sets the state to the initial state. + Initiates a sequence of calls to mbchar. */ +static void +ub_mbinit( + XPointer state) +{ +} + +/* Transforms one multibyte character, and return a 'char' in the same + parsing class. Returns the number of consumed bytes in *lenp. */ +static char +ub_mbchar( + XPointer state, + const char *str, + int *lenp) +{ + *lenp = 1; + return *str; +} + +/* Terminates a sequence of calls to mbchar. */ +static void +ub_mbfinish( + XPointer state) +{ +} + +/* Returns the name of the state's locale, as a static string. */ +static const char * +ub_lcname( + XPointer state) +{ + return ((UbState) state)->lcd->core->name; +} + +/* Frees the state, which was allocated by _XrmDefaultInitParseInfo. */ +static void +ub_destroy( + XPointer state) +{ + _XCloseLC(((UbState) state)->lcd); + Xfree((char *) state); +} + +static const XrmMethodsRec ub_methods = { + ub_mbinit, + ub_mbchar, + ub_mbfinish, + ub_lcname, + ub_destroy +}; + +/* ======================= Multibyte implementation ======================= */ + +/* This implementation uses an XlcConv from XlcNMultiByte to XlcNWideChar. */ +typedef struct _MbStateRec { + XLCd lcd; + XlcConv conv; +} MbStateRec, *MbState; + +/* Sets the state to the initial state. + Initiates a sequence of calls to mbchar. */ +static void +mb_mbinit( + XPointer state) +{ + _XlcResetConverter(((MbState) state)->conv); +} + +/* Transforms one multibyte character, and return a 'char' in the same + parsing class. Returns the number of consumed bytes in *lenp. */ +static char +mb_mbchar( + XPointer state, + const char *str, + int *lenp) +{ + XlcConv conv = ((MbState) state)->conv; + const char *from; + wchar_t *to, wc; + int cur_max, i, from_left, to_left, ret; + + cur_max = XLC_PUBLIC(((MbState) state)->lcd, mb_cur_max); + + from = str; + /* Determine from_left. Avoid overrun error which could occur if + from_left > strlen(str). */ + from_left = cur_max; + for (i = 0; i < cur_max; i++) + if (str[i] == '\0') { + from_left = i; + break; + } + *lenp = from_left; + + to = &wc; + to_left = 1; + + ret = _XlcConvert(conv, (XPointer *) &from, &from_left, + (XPointer *) &to, &to_left, NULL, 0); + *lenp -= from_left; + + if (ret < 0 || to_left > 0) { + /* Invalid or incomplete multibyte character seen. */ + *lenp = 1; + return 0x7f; + } + /* Return a 'char' equivalent to wc. */ + return (wc >= 0 && wc <= 0x7f ? wc : 0x7f); +} + +/* Terminates a sequence of calls to mbchar. */ +static void +mb_mbfinish( + XPointer state) +{ +} + +/* Returns the name of the state's locale, as a static string. */ +static const char * +mb_lcname( + XPointer state) +{ + return ((MbState) state)->lcd->core->name; +} + +/* Frees the state, which was allocated by _XrmDefaultInitParseInfo. */ +static void +mb_destroy( + XPointer state) +{ + _XlcCloseConverter(((MbState) state)->conv); + _XCloseLC(((MbState) state)->lcd); + Xfree((char *) state); +} + +static const XrmMethodsRec mb_methods = { + mb_mbinit, + mb_mbchar, + mb_mbfinish, + mb_lcname, + mb_destroy +}; + +/* ======================= Exported function ======================= */ + +XrmMethods +_XrmDefaultInitParseInfo( + XLCd lcd, + XPointer *rm_state) +{ + if (XLC_PUBLIC(lcd, mb_cur_max) == 1) { + /* Unibyte case. */ + UbState state = (UbState) Xmalloc(sizeof(UbStateRec)); + if (state == NULL) + return (XrmMethods) NULL; + + state->lcd = lcd; + + *rm_state = (XPointer) state; + return &ub_methods; + } else { + /* Multibyte case. */ + MbState state = (MbState) Xmalloc(sizeof(MbStateRec)); + if (state == NULL) + return (XrmMethods) NULL; + + state->lcd = lcd; + state->conv = _XlcOpenConverter(lcd, XlcNMultiByte, lcd, XlcNWideChar); + if (state->conv == NULL) { + Xfree((char *) state); + return (XrmMethods) NULL; + } + + *rm_state = (XPointer) state; + return &mb_methods; + } +} |