diff options
Diffstat (limited to 'wcsmbs/wcsmbsload.c')
| -rw-r--r-- | wcsmbs/wcsmbsload.c | 88 |
1 files changed, 65 insertions, 23 deletions
diff --git a/wcsmbs/wcsmbsload.c b/wcsmbs/wcsmbsload.c index f5d9426..c096804 100644 --- a/wcsmbs/wcsmbsload.c +++ b/wcsmbs/wcsmbsload.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc. +/* Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. @@ -41,8 +41,8 @@ static struct __gconv_step to_wc = .__shlib_handle = NULL, .__modname = NULL, .__counter = INT_MAX, - .__from_name = "ANSI_X3.4-1968//TRANSLIT", - .__to_name = "INTERNAL", + .__from_name = (char *) "ANSI_X3.4-1968//TRANSLIT", + .__to_name = (char *) "INTERNAL", .__fct = __gconv_transform_ascii_internal, .__init_fct = NULL, .__end_fct = NULL, @@ -59,8 +59,8 @@ static struct __gconv_step to_mb = .__shlib_handle = NULL, .__modname = NULL, .__counter = INT_MAX, - .__from_name = "INTERNAL", - .__to_name = "ANSI_X3.4-1968//TRANSLIT", + .__from_name = (char *) "INTERNAL", + .__to_name = (char *) "ANSI_X3.4-1968//TRANSLIT", .__fct = __gconv_transform_internal_ascii, .__init_fct = NULL, .__end_fct = NULL, @@ -77,22 +77,33 @@ static struct __gconv_step to_mb = struct gconv_fcts __wcsmbs_gconv_fcts = { .towc = &to_wc, - .tomb = &to_mb + .towc_nsteps = 1, + .tomb = &to_mb, + .tomb_nsteps = 1 }; static inline struct __gconv_step * -getfct (const char *to, const char *from) +getfct (const char *to, const char *from, size_t *nstepsp) { size_t nsteps; struct __gconv_step *result; +#if 0 size_t nstateful; size_t cnt; +#endif if (__gconv_find_transform (to, from, &result, &nsteps, 0) != __GCONV_OK) /* Loading the conversion step is not possible. */ return NULL; + /* Maybe it is someday necessary to allow more than one step. + Currently this is not the case since the conversions handled here + are from and to INTERNAL and there always is a converted for + that. It the directly following code is enabled the libio + functions will have to allocate appropriate __gconv_step_data + elements instead of only one. */ +#if 0 /* Count the number of stateful conversions. Since we will only have one 'mbstate_t' object available we can only deal with one stateful conversion. */ @@ -101,11 +112,16 @@ getfct (const char *to, const char *from) if (result[cnt].__stateful) ++nstateful; if (nstateful > 1) +#else + if (nsteps > 1) +#endif { /* We cannot handle this case. */ __gconv_close_transform (result, nsteps); result = NULL; } + else + *nstepsp = nsteps; return result; } @@ -160,12 +176,18 @@ __wcsmbs_load_conv (const struct locale_data *new_category) const char *charset_name; const char *complete_name; struct __gconv_step *new_towc; + size_t new_towc_nsteps; struct __gconv_step *new_tomb; + size_t new_tomb_nsteps; int use_translit; /* Free the old conversions. */ - __gconv_close_transform (__wcsmbs_gconv_fcts.tomb, 1); - __gconv_close_transform (__wcsmbs_gconv_fcts.towc, 1); + if (__wcsmbs_gconv_fcts.tomb != &to_mb) + __gconv_close_transform (__wcsmbs_gconv_fcts.tomb, + __wcsmbs_gconv_fcts.tomb_nsteps); + if (__wcsmbs_gconv_fcts.towc != &to_wc) + __gconv_close_transform (__wcsmbs_gconv_fcts.towc, + __wcsmbs_gconv_fcts.towc_nsteps); /* Get name of charset of the locale. */ charset_name = new_category->values[_NL_ITEM_INDEX(CODESET)].string; @@ -181,9 +203,10 @@ __wcsmbs_load_conv (const struct locale_data *new_category) /* It is not necessary to use transliteration in this direction since the internal character set is supposed to be able to represent all others. */ - new_towc = getfct ("INTERNAL", complete_name); + new_towc = getfct ("INTERNAL", complete_name, &new_towc_nsteps); new_tomb = (new_towc != NULL - ? getfct (complete_name, "INTERNAL") : NULL); + ? getfct (complete_name, "INTERNAL", &new_tomb_nsteps) + : NULL); /* If any of the conversion functions is not available we don't use any since this would mean we cannot convert back and @@ -197,7 +220,9 @@ __wcsmbs_load_conv (const struct locale_data *new_category) } __wcsmbs_gconv_fcts.tomb = new_tomb; + __wcsmbs_gconv_fcts.tomb_nsteps = new_tomb_nsteps; __wcsmbs_gconv_fcts.towc = new_towc; + __wcsmbs_gconv_fcts.towc_nsteps = new_towc_nsteps; } /* Set last-used variable for current locale. */ @@ -232,27 +257,44 @@ __wcsmbs_clone_conv (struct gconv_fcts *copy) } -/* Clone the current conversion function set. */ +/* Get converters for named charset. */ int internal_function __wcsmbs_named_conv (struct gconv_fcts *copy, const char *name) { - copy->towc = getfct ("INTERNAL", name); + copy->towc = getfct ("INTERNAL", name, ©->towc_nsteps); if (copy->towc != NULL) { - copy->tomb = getfct (name, "INTERNAL"); + copy->tomb = getfct (name, "INTERNAL", ©->tomb_nsteps); if (copy->tomb == NULL) - __gconv_close_transform (copy->towc, 1); + __gconv_close_transform (copy->towc, copy->towc_nsteps); } - if (copy->towc == NULL || copy->tomb == NULL) - return 1; + return copy->towc == NULL || copy->tomb == NULL ? 1 : 0; +} - /* Now increment the usage counters. */ - if (copy->towc->__shlib_handle != NULL) - ++copy->towc->__counter; - if (copy->tomb->__shlib_handle != NULL) - ++copy->tomb->__counter; - return 0; +/* Free all resources if necessary. */ +static void __attribute__ ((unused)) +free_mem (void) +{ + if (__wcsmbs_gconv_fcts.tomb != &to_mb) + { + struct __gconv_step *old = __wcsmbs_gconv_fcts.tomb; + size_t nold = __wcsmbs_gconv_fcts.tomb_nsteps; + __wcsmbs_gconv_fcts.tomb = &to_mb; + __wcsmbs_gconv_fcts.tomb_nsteps = 1; + __gconv_release_cache (old, nold); + } + + if (__wcsmbs_gconv_fcts.towc != &to_wc) + { + struct __gconv_step *old = __wcsmbs_gconv_fcts.towc; + size_t nold = __wcsmbs_gconv_fcts.towc_nsteps; + __wcsmbs_gconv_fcts.towc = &to_wc; + __wcsmbs_gconv_fcts.towc_nsteps = 1; + __gconv_release_cache (old, nold); + } } + +text_set_element (__libc_subfreeres, free_mem); |