/* Find matching transformation algorithms and initialize steps.
|
/* Find matching transformation algorithms and initialize steps.
|
Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
|
Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
|
This file is part of the GNU C Library.
|
This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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|
|
The GNU C Library is free software; you can redistribute it and/or
|
The GNU C Library is free software; you can redistribute it and/or
|
modify it under the terms of the GNU Lesser General Public
|
modify it under the terms of the GNU Lesser General Public
|
License as published by the Free Software Foundation; either
|
License as published by the Free Software Foundation; either
|
version 2.1 of the License, or (at your option) any later version.
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
The GNU C Library is distributed in the hope that it will be useful,
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
Lesser General Public License for more details.
|
Lesser General Public License for more details.
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|
|
You should have received a copy of the GNU Lesser General Public
|
You should have received a copy of the GNU Lesser General Public
|
License along with the GNU C Library; if not, write to the Free
|
License along with the GNU C Library; if not, write to the Free
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
02111-1307 USA. */
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02111-1307 USA. */
|
|
|
#include <errno.h>
|
#include <errno.h>
|
#include <locale.h>
|
#include <locale.h>
|
#include <stdlib.h>
|
#include <stdlib.h>
|
#include <string.h>
|
#include <string.h>
|
|
|
#include <gconv_int.h>
|
#include <gconv_int.h>
|
|
|
int
|
int
|
internal_function
|
internal_function
|
__gconv_open (const char *toset, const char *fromset, __gconv_t *handle,
|
__gconv_open (const char *toset, const char *fromset, __gconv_t *handle,
|
int flags)
|
int flags)
|
{
|
{
|
struct __gconv_step *steps;
|
struct __gconv_step *steps;
|
size_t nsteps;
|
size_t nsteps;
|
__gconv_t result = NULL;
|
__gconv_t result = NULL;
|
size_t cnt = 0;
|
size_t cnt = 0;
|
int res;
|
int res;
|
int conv_flags = 0;
|
int conv_flags = 0;
|
const char *errhand;
|
const char *errhand;
|
const char *ignore;
|
const char *ignore;
|
struct trans_struct *trans = NULL;
|
struct trans_struct *trans = NULL;
|
char old_locale[20], *old_locale_p;
|
char old_locale[20], *old_locale_p;
|
char *old, *new;
|
char *old, *new;
|
size_t len;
|
size_t len;
|
|
|
/* Find out whether any error handling method is specified. */
|
/* Find out whether any error handling method is specified. */
|
errhand = strchr (toset, '/');
|
errhand = strchr (toset, '/');
|
if (errhand != NULL)
|
if (errhand != NULL)
|
errhand = strchr (errhand + 1, '/');
|
errhand = strchr (errhand + 1, '/');
|
if (__builtin_expect (errhand != NULL, 1))
|
if (__builtin_expect (errhand != NULL, 1))
|
{
|
{
|
if (*++errhand == '\0')
|
if (*++errhand == '\0')
|
errhand = NULL;
|
errhand = NULL;
|
else
|
else
|
{
|
{
|
/* Make copy without the error handling description. */
|
/* Make copy without the error handling description. */
|
char *newtoset = (char *) alloca (errhand - toset + 1);
|
char *newtoset = (char *) alloca (errhand - toset + 1);
|
char *tok;
|
char *tok;
|
char *ptr;
|
char *ptr;
|
|
|
newtoset[errhand - toset] = '\0';
|
newtoset[errhand - toset] = '\0';
|
toset = memcpy (newtoset, toset, errhand - toset);
|
toset = memcpy (newtoset, toset, errhand - toset);
|
|
|
/* Find the appropriate transliteration handlers. */
|
/* Find the appropriate transliteration handlers. */
|
old = (char *)(errhand);
|
old = (char *)(errhand);
|
len = strlen (old) + 1;
|
len = strlen (old) + 1;
|
new = (char *) alloca (len);
|
new = (char *) alloca (len);
|
tok = (char *) memcpy (new, old, len);
|
tok = (char *) memcpy (new, old, len);
|
|
|
tok = strtok_r (tok, ",", &ptr);
|
tok = strtok_r (tok, ",", &ptr);
|
|
|
/* Set locale to default C locale. */
|
/* Set locale to default C locale. */
|
old_locale_p = setlocale(LC_ALL, "C");
|
old_locale_p = setlocale(LC_ALL, "C");
|
strncpy(old_locale, old_locale_p, 20);
|
strncpy(old_locale, old_locale_p, 20);
|
|
|
while (tok != NULL)
|
while (tok != NULL)
|
{
|
{
|
if (strcasecmp (tok, "TRANSLIT") == 0)
|
if (strcasecmp (tok, "TRANSLIT") == 0)
|
{
|
{
|
/* It's the builtin transliteration handling. We only
|
/* It's the builtin transliteration handling. We only
|
support it for working on the internal encoding. */
|
support it for working on the internal encoding. */
|
static const char *internal_trans_names[1] = { "INTERNAL" };
|
static const char *internal_trans_names[1] = { "INTERNAL" };
|
struct trans_struct *lastp = NULL;
|
struct trans_struct *lastp = NULL;
|
struct trans_struct *runp;
|
struct trans_struct *runp;
|
|
|
for (runp = trans; runp != NULL; runp = runp->next)
|
for (runp = trans; runp != NULL; runp = runp->next)
|
if (runp->trans_fct == __gconv_transliterate)
|
if (runp->trans_fct == __gconv_transliterate)
|
break;
|
break;
|
else
|
else
|
lastp = runp;
|
lastp = runp;
|
|
|
if (runp == NULL)
|
if (runp == NULL)
|
{
|
{
|
struct trans_struct *newp;
|
struct trans_struct *newp;
|
|
|
newp = (struct trans_struct *) alloca (sizeof (*newp));
|
newp = (struct trans_struct *) alloca (sizeof (*newp));
|
memset (newp, '\0', sizeof (*newp));
|
memset (newp, '\0', sizeof (*newp));
|
|
|
/* We leave the `name' field zero to signal that
|
/* We leave the `name' field zero to signal that
|
this is an internal transliteration step. */
|
this is an internal transliteration step. */
|
newp->csnames = internal_trans_names;
|
newp->csnames = internal_trans_names;
|
newp->ncsnames = 1;
|
newp->ncsnames = 1;
|
newp->trans_fct = __gconv_transliterate;
|
newp->trans_fct = __gconv_transliterate;
|
|
|
if (lastp == NULL)
|
if (lastp == NULL)
|
trans = newp;
|
trans = newp;
|
else
|
else
|
lastp->next = newp;
|
lastp->next = newp;
|
}
|
}
|
}
|
}
|
else if (strcasecmp (tok, "IGNORE") == 0)
|
else if (strcasecmp (tok, "IGNORE") == 0)
|
/* Set the flag to ignore all errors. */
|
/* Set the flag to ignore all errors. */
|
conv_flags |= __GCONV_IGNORE_ERRORS;
|
conv_flags |= __GCONV_IGNORE_ERRORS;
|
else
|
else
|
{
|
{
|
/* `tok' is possibly a module name. We'll see later
|
/* `tok' is possibly a module name. We'll see later
|
whether we can find it. But first see that we do
|
whether we can find it. But first see that we do
|
not already a module of this name. */
|
not already a module of this name. */
|
struct trans_struct *lastp = NULL;
|
struct trans_struct *lastp = NULL;
|
struct trans_struct *runp;
|
struct trans_struct *runp;
|
|
|
for (runp = trans; runp != NULL; runp = runp->next)
|
for (runp = trans; runp != NULL; runp = runp->next)
|
if (runp->name != NULL
|
if (runp->name != NULL
|
&& strcasecmp (tok, runp->name) == 0)
|
&& strcasecmp (tok, runp->name) == 0)
|
break;
|
break;
|
else
|
else
|
lastp = runp;
|
lastp = runp;
|
|
|
if (runp == NULL)
|
if (runp == NULL)
|
{
|
{
|
struct trans_struct *newp;
|
struct trans_struct *newp;
|
|
|
newp = (struct trans_struct *) alloca (sizeof (*newp));
|
newp = (struct trans_struct *) alloca (sizeof (*newp));
|
memset (newp, '\0', sizeof (*newp));
|
memset (newp, '\0', sizeof (*newp));
|
newp->name = tok;
|
newp->name = tok;
|
|
|
if (lastp == NULL)
|
if (lastp == NULL)
|
trans = newp;
|
trans = newp;
|
else
|
else
|
lastp->next = newp;
|
lastp->next = newp;
|
}
|
}
|
}
|
}
|
|
|
tok = strtok_r (NULL, ",", &ptr);
|
tok = strtok_r (NULL, ",", &ptr);
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/* For the source character set we ignore the error handler specification.
|
/* For the source character set we ignore the error handler specification.
|
XXX Is this really always the best? */
|
XXX Is this really always the best? */
|
ignore = strchr (fromset, '/');
|
ignore = strchr (fromset, '/');
|
if (ignore != NULL && (ignore = strchr (ignore + 1, '/')) != NULL
|
if (ignore != NULL && (ignore = strchr (ignore + 1, '/')) != NULL
|
&& *++ignore != '\0')
|
&& *++ignore != '\0')
|
{
|
{
|
char *newfromset = (char *) alloca (ignore - fromset + 1);
|
char *newfromset = (char *) alloca (ignore - fromset + 1);
|
|
|
newfromset[ignore - fromset] = '\0';
|
newfromset[ignore - fromset] = '\0';
|
fromset = memcpy (newfromset, fromset, ignore - fromset);
|
fromset = memcpy (newfromset, fromset, ignore - fromset);
|
}
|
}
|
|
|
res = __gconv_find_transform (toset, fromset, &steps, &nsteps, flags);
|
res = __gconv_find_transform (toset, fromset, &steps, &nsteps, flags);
|
if (res == __GCONV_OK)
|
if (res == __GCONV_OK)
|
{
|
{
|
/* Find the modules. */
|
/* Find the modules. */
|
struct trans_struct *lastp = NULL;
|
struct trans_struct *lastp = NULL;
|
struct trans_struct *runp;
|
struct trans_struct *runp;
|
|
|
for (runp = trans; runp != NULL; runp = runp->next)
|
for (runp = trans; runp != NULL; runp = runp->next)
|
{
|
{
|
if (runp->name == NULL
|
if (runp->name == NULL
|
|| __builtin_expect (__gconv_translit_find (runp), 0) == 0)
|
|| __builtin_expect (__gconv_translit_find (runp), 0) == 0)
|
lastp = runp;
|
lastp = runp;
|
else
|
else
|
/* This means we haven't found the module. Remove it. */
|
/* This means we haven't found the module. Remove it. */
|
if (lastp == NULL)
|
if (lastp == NULL)
|
trans = runp->next;
|
trans = runp->next;
|
else
|
else
|
lastp->next = runp->next;
|
lastp->next = runp->next;
|
}
|
}
|
|
|
/* Allocate room for handle. */
|
/* Allocate room for handle. */
|
result = (__gconv_t) malloc (sizeof (struct __gconv_info)
|
result = (__gconv_t) malloc (sizeof (struct __gconv_info)
|
+ (nsteps
|
+ (nsteps
|
* sizeof (struct __gconv_step_data)));
|
* sizeof (struct __gconv_step_data)));
|
if (result == NULL)
|
if (result == NULL)
|
res = __GCONV_NOMEM;
|
res = __GCONV_NOMEM;
|
else
|
else
|
{
|
{
|
size_t n;
|
size_t n;
|
|
|
/* Remember the list of steps. */
|
/* Remember the list of steps. */
|
result->__steps = steps;
|
result->__steps = steps;
|
result->__nsteps = nsteps;
|
result->__nsteps = nsteps;
|
|
|
/* Clear the array for the step data. */
|
/* Clear the array for the step data. */
|
memset (result->__data, '\0',
|
memset (result->__data, '\0',
|
nsteps * sizeof (struct __gconv_step_data));
|
nsteps * sizeof (struct __gconv_step_data));
|
|
|
/* Call all initialization functions for the transformation
|
/* Call all initialization functions for the transformation
|
step implementations. */
|
step implementations. */
|
for (cnt = 0; cnt < nsteps; ++cnt)
|
for (cnt = 0; cnt < nsteps; ++cnt)
|
{
|
{
|
size_t size;
|
size_t size;
|
|
|
/* Would have to be done if we would not clear the whole
|
/* Would have to be done if we would not clear the whole
|
array above. */
|
array above. */
|
#if 0
|
#if 0
|
/* Reset the counter. */
|
/* Reset the counter. */
|
result->__data[cnt].__invocation_counter = 0;
|
result->__data[cnt].__invocation_counter = 0;
|
|
|
/* It's a regular use. */
|
/* It's a regular use. */
|
result->__data[cnt].__internal_use = 0;
|
result->__data[cnt].__internal_use = 0;
|
#endif
|
#endif
|
|
|
/* We use the `mbstate_t' member in DATA. */
|
/* We use the `mbstate_t' member in DATA. */
|
result->__data[cnt].__statep = &result->__data[cnt].__state;
|
result->__data[cnt].__statep = &result->__data[cnt].__state;
|
|
|
/* Now see whether we can use any of the transliteration
|
/* Now see whether we can use any of the transliteration
|
modules for this step. */
|
modules for this step. */
|
for (runp = trans; runp != NULL; runp = runp->next)
|
for (runp = trans; runp != NULL; runp = runp->next)
|
for (n = 0; n < runp->ncsnames; ++n)
|
for (n = 0; n < runp->ncsnames; ++n)
|
if (strcasecmp (steps[cnt].__from_name, runp->csnames[n]) == 0)
|
if (strcasecmp (steps[cnt].__from_name, runp->csnames[n]) == 0)
|
{
|
{
|
void *data = NULL;
|
void *data = NULL;
|
|
|
/* Match! Now try the initializer. */
|
/* Match! Now try the initializer. */
|
if (runp->trans_init_fct == NULL
|
if (runp->trans_init_fct == NULL
|
|| (runp->trans_init_fct (&data,
|
|| (runp->trans_init_fct (&data,
|
steps[cnt].__to_name)
|
steps[cnt].__to_name)
|
== __GCONV_OK))
|
== __GCONV_OK))
|
{
|
{
|
/* Append at the end of the list. */
|
/* Append at the end of the list. */
|
struct __gconv_trans_data *newp;
|
struct __gconv_trans_data *newp;
|
struct __gconv_trans_data **lastp;
|
struct __gconv_trans_data **lastp;
|
|
|
newp = (struct __gconv_trans_data *)
|
newp = (struct __gconv_trans_data *)
|
malloc (sizeof (struct __gconv_trans_data));
|
malloc (sizeof (struct __gconv_trans_data));
|
if (newp == NULL)
|
if (newp == NULL)
|
{
|
{
|
res = __GCONV_NOMEM;
|
res = __GCONV_NOMEM;
|
goto bail;
|
goto bail;
|
}
|
}
|
|
|
newp->__trans_fct = runp->trans_fct;
|
newp->__trans_fct = runp->trans_fct;
|
newp->__trans_context_fct = runp->trans_context_fct;
|
newp->__trans_context_fct = runp->trans_context_fct;
|
newp->__trans_end_fct = runp->trans_end_fct;
|
newp->__trans_end_fct = runp->trans_end_fct;
|
newp->__data = data;
|
newp->__data = data;
|
newp->__next = NULL;
|
newp->__next = NULL;
|
|
|
lastp = &result->__data[cnt].__trans;
|
lastp = &result->__data[cnt].__trans;
|
while (*lastp != NULL)
|
while (*lastp != NULL)
|
lastp = &(*lastp)->__next;
|
lastp = &(*lastp)->__next;
|
|
|
*lastp = newp;
|
*lastp = newp;
|
}
|
}
|
break;
|
break;
|
}
|
}
|
|
|
/* If this is the last step we must not allocate an
|
/* If this is the last step we must not allocate an
|
output buffer. */
|
output buffer. */
|
if (cnt < nsteps - 1)
|
if (cnt < nsteps - 1)
|
{
|
{
|
result->__data[cnt].__flags = conv_flags;
|
result->__data[cnt].__flags = conv_flags;
|
|
|
/* Allocate the buffer. */
|
/* Allocate the buffer. */
|
size = (GCONV_NCHAR_GOAL * steps[cnt].__max_needed_to);
|
size = (GCONV_NCHAR_GOAL * steps[cnt].__max_needed_to);
|
|
|
result->__data[cnt].__outbuf = (char *) malloc (size);
|
result->__data[cnt].__outbuf = (char *) malloc (size);
|
if (result->__data[cnt].__outbuf == NULL)
|
if (result->__data[cnt].__outbuf == NULL)
|
{
|
{
|
res = __GCONV_NOMEM;
|
res = __GCONV_NOMEM;
|
goto bail;
|
goto bail;
|
}
|
}
|
|
|
result->__data[cnt].__outbufend =
|
result->__data[cnt].__outbufend =
|
result->__data[cnt].__outbuf + size;
|
result->__data[cnt].__outbuf + size;
|
}
|
}
|
else
|
else
|
{
|
{
|
/* Handle the last entry. */
|
/* Handle the last entry. */
|
result->__data[cnt].__flags = conv_flags | __GCONV_IS_LAST;
|
result->__data[cnt].__flags = conv_flags | __GCONV_IS_LAST;
|
|
|
break;
|
break;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
if (res != __GCONV_OK)
|
if (res != __GCONV_OK)
|
{
|
{
|
/* Something went wrong. Free all the resources. */
|
/* Something went wrong. Free all the resources. */
|
int serrno;
|
int serrno;
|
bail:
|
bail:
|
serrno = errno;
|
serrno = errno;
|
|
|
if (result != NULL)
|
if (result != NULL)
|
{
|
{
|
while (cnt-- > 0)
|
while (cnt-- > 0)
|
{
|
{
|
struct __gconv_trans_data *transp;
|
struct __gconv_trans_data *transp;
|
|
|
transp = result->__data[cnt].__trans;
|
transp = result->__data[cnt].__trans;
|
while (transp != NULL)
|
while (transp != NULL)
|
{
|
{
|
struct __gconv_trans_data *curp = transp;
|
struct __gconv_trans_data *curp = transp;
|
transp = transp->__next;
|
transp = transp->__next;
|
|
|
if (__builtin_expect (curp->__trans_end_fct != NULL, 0))
|
if (__builtin_expect (curp->__trans_end_fct != NULL, 0))
|
curp->__trans_end_fct (curp->__data);
|
curp->__trans_end_fct (curp->__data);
|
|
|
free (curp);
|
free (curp);
|
}
|
}
|
|
|
free (result->__data[cnt].__outbuf);
|
free (result->__data[cnt].__outbuf);
|
}
|
}
|
|
|
free (result);
|
free (result);
|
result = NULL;
|
result = NULL;
|
}
|
}
|
|
|
__gconv_close_transform (steps, nsteps);
|
__gconv_close_transform (steps, nsteps);
|
|
|
__set_errno (serrno);
|
__set_errno (serrno);
|
}
|
}
|
}
|
}
|
|
|
*handle = result;
|
*handle = result;
|
setlocale(LC_ALL, old_locale);
|
setlocale(LC_ALL, old_locale);
|
return res;
|
return res;
|
}
|
}
|
|
|
