aboutsummaryrefslogtreecommitdiff
path: root/iconv/loop.c
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>1998-04-20 18:41:05 +0000
committerUlrich Drepper <drepper@redhat.com>1998-04-20 18:41:05 +0000
commit8619129f3f0d5a9db6208be5bae6c2a8c9ce61a5 (patch)
tree033b6528f39a85f12db9d0859dbd1b90c2906eee /iconv/loop.c
parentf1fa8b68f3e7623a3ef86dcd0c7d090ccf0389f5 (diff)
downloadglibc-8619129f3f0d5a9db6208be5bae6c2a8c9ce61a5.tar
glibc-8619129f3f0d5a9db6208be5bae6c2a8c9ce61a5.tar.gz
glibc-8619129f3f0d5a9db6208be5bae6c2a8c9ce61a5.tar.bz2
glibc-8619129f3f0d5a9db6208be5bae6c2a8c9ce61a5.zip
Update.
1998-04-20 18:00 Ulrich Drepper <drepper@cygnus.com> * libc.map: Add __dgettext to GLIBC_2.0 and __libc_longjmp, and __libc_siglongjmp to GLIBC_2.1. * elf/dl-minimal.c (__assert_perror_fail): Don't use strerror, use __strerror_r. * iconv/Makefile: Don't run tests now. * iconv/iconv_prog.c (process_block): If loop is repeated, call iconv with correct output buffer. Major rewrite of the low-level gconv functionality. * iconv/gconv.c: Rewritten. * iconv/gconv.h: Likewise. * iconv/gconv_builtin.c: Likewise. * iconv/gconv_builtin.h: Likewise. * iconv/gconv_conf.c: Likewise. * iconv/gconv_int.h: Likewise. * iconv/gconv_open.c: Likewise. * iconv/gconv_simple.c: Likewise. * iconv/iconv.c: Likewise. * iconvdata/8bit-gap.c: Likewise. * iconvdata/8bit-generic.c: Likewise. * iconvdata/Makefile: Likewise. * iconvdata/big5.c: Likewise. * iconvdata/cns11643.c: Likewise. * iconvdata/cns11643.h: Likewise. * iconvdata/cns11643l1.c: Likewise. * iconvdata/cns11643l1.h: Likewise. * iconvdata/ebcdic-at-de-a.c: Likewise. * iconvdata/ebcdic-at-de.c: Likewise. * iconvdata/ebcdic-ca-fr.c: Likewise. * iconvdata/euccn.c: Likewise. * iconvdata/eucjp.c: Likewise. * iconvdata/euckr.c: Likewise. * iconvdata/euctw.c: Likewise. * iconvdata/gb2312.c: Likewise. * iconvdata/gb2312.h: Likewise. * iconvdata/hp-roman8.c: Likewise. * iconvdata/iso646.c: Likewise. * iconvdata/iso6937.c: Likewise. * iconvdata/iso8859-1.c: Likewise. * iconvdata/iso8859-10.c: Likewise. * iconvdata/iso8859-2.c: Likewise. * iconvdata/iso8859-3.c: Likewise. * iconvdata/iso8859-4.c: Likewise. * iconvdata/iso8859-5.c: Likewise. * iconvdata/iso8859-6.c: Likewise. * iconvdata/iso8859-7.c: Likewise. * iconvdata/iso8859-8.c: Likewise. * iconvdata/iso8859-9.c: Likewise. * iconvdata/jis0201.c: Likewise. * iconvdata/jis0201.h: Likewise. * iconvdata/jis0208.c: Likewise. * iconvdata/jis0208.h: Likewise. * iconvdata/jis0212.c: Likewise. * iconvdata/jis0212.h: Likewise. * iconvdata/johab.c: Likewise. * iconvdata/koi-8.c: Likewise. * iconvdata/koi8-r.c: Likewise. * iconvdata/ksc5601.c: Likewise. * iconvdata/ksc5601.h: Likewise. * iconvdata/latin-greek-1.c: Likewise. * iconvdata/latin-greek.c: Likewise. * iconvdata/run-iconv-test.sh: Likewise. * iconvdata/sjis.c: Likewise. * iconvdata/t61.c: Likewise. * iconvdata/uhc.c: Likewise. * wcsmbs/btowc.c: Likewise. * wcsmbs/mbrtowc.c: Likewise. * wcsmbs/mbsnrtowcs.c: Likewise. * wcsmbs/mbsrtowcs.c: Likewise. * wcsmbs/wcrtomb.c: Likewise. * wcsmbs/wcsmbsload.c: Likewise. * wcsmbs/wcsnrtombs.c: Likewise. * wcsmbs/wcsrtombs.c: Likewise. * wcsmbs/wctob.c: Likewise. * iconv/loop.c: New file. * iconv/skeleton.c: New file. * stdlib/mblen.c: Handle empty input string correctly. * stdlib/mbtowc.c: Likewise. * posix/getopt.c: Various cleanups. * sysdeps/arm/bits/setjmp.h: Add copyright text. * sysdeps/i386/bits/setjmp.h: Likewise. * sysdeps/m68k/bits/setjmp.h: Likewise. * sysdeps/powerpc/bits/setjmp.h: Likewise. * sysdeps/sparc/sparc32/bits/setjmp.h: Likewise. * sysdeps/generic/longjmp.c: Rename function to __libc_siglongjmp and make longjmp weak alias. 1998-04-18 20:29 Philip Blundell <Philip.Blundell@pobox.com> * iconv/Makefile (routines): Only include gconv_dl if building for an ELF system - dynamic linking is not available on a.out. (CFLAGS-gconv_conf.c): Define STATIC_GCONV if omitting gconv_dl due to above check. * iconv/gconv_db.c: If STATIC_GCONV defined, don't try to call routines from gconv_dl. 1998-04-17 Gordon Matzigkeit <gord@profitpress.com> * csu/init.c (_IO_stdin_used): Protect with USE_IN_LIBIO so that we can compile without libio. 1998-04-20 16:28 Ulrich Drepper <drepper@cygnus.com> * sysdeps/mach/hurd/Subdirs: Remove login. 1998-04-11 Gordon Matzigkeit <gord@profitpress.com> * db2/compat.h: Include <errno.h>, to make sure we get the definition of EFTYPE before we define it ourselves. 1998-04-10 Gordon Matzigkeit <gord@profitpress.com> * sysdeps/generic/bits/socket.h: Protect against multiple inclusion. * sysdeps/mach/hurd/bits/ioctls.h: Likewise. Fix typo to allow inclusion from sys/ioctl.h again. 1998-04-16 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * iconvdata/*.[ch]: Clean up namespace. Optimize character lookup. 1998-04-16 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * libc.map: Export __strerror_r. Remove _strerror_internal. 1998-04-16 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/generic/strcasestr.c: Undefine strcasestr, not strstr. Also undefine __strcasestr. 1998-04-16 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * posix/regex.c: Rename __re_max_failures back to re_max_failures, aliases do not work with global variables due to copy relocations. 1998-04-20 15:12 Ulrich Drepper <drepper@cygnus.com> * manual/creature.texi: Fix type. Patch by Andreas Schwab. 1998-04-20 13:47 Ulrich Drepper <drepper@cygnus.com> * signal/sighold.c: Include stddef.h for NULL definition. * signal/sigrelse.c: Likewise. * sysdeps/posix/sigignore.c: Likewise. * sysdeps/posix/sigset.c: Likewise. * sysdeps/posix/waitid.c: Likewise. * sysdeps/unix/sysv/linux/rt_sigsuspend.c: Likewise. * sysdeps/unix/sysv/linux/rt_sigtimedwait.c: Likewise. * sysdeps/unix/sysv/linux/sigwaitinfo.c: Likewise. * wcsmbs/mbsrtowcs.c: Include stdlib.h for MB_CUR_MAX. Patch by Franz Sirl <Franz.Sirl-kernel@lauterbach.com>. 1998-04-13 Mark Kettenis <kettenis@phys.uva.nl> * login/Makefile (headers): Remove utmpx.h and bits/utmpx.h. * login/getutent.c (getutxent): Remove alias. * login/getutent_r.c (setutxent, pututxline, endutxent): Remove aliases. * login/getutid.c (getutxid): Remove alias. * login/getutline.c (getutxline): Remove alias. * login/utmp.h: Add prototypes for __updwtmp, __getutent, __getutid, __getutline and __pututline. * login/utmpx.h: Moved to ... * sysdeps/gnu/utmpx.h: ... here. [__USE_GNU]: Define UTMPX_FILE, UTMPX_FILENAME, WTMPX_FILE and WTMPX_FILENAME, declare utmpxname and updwtmpx. * login/updwtmp.c: Moved to ... * sysdeps/generic/updwtmp.c: ... here. (updwtmp): Generalized by allowing file name transformation. * sysdeps/gnu/updwtmp.c: New file. Use generic implementation with additional file name transformation. * sysdeps/unix/sysv/linux/updwtmp.c: Likewise. * login/utmp_file.c: Moved to ... * sysdeps/generic/utmp_file.c: ... here. (setutent_file): Generalized by allowing file name transformation. Do not print error message. Library functions should not print them. Reported by Jim Meyering. * sysdeps/gnu/utmp_file.c: New file. Use generic implementation with additional file name transformation. * sysdeps/unix/sysv/linux/utmp_file.c: Likewise. * sysdeps/gnu/Makefile [$(subdir)=login] (sysdep_routines): Add setutxent, getutxent, endutxent, getutxid, getutxid, getutxline, pututxline, utmpxname and updwtmpx. (sysdep_headers): Add utmpx.h and bits/utmpx.h. * sysdeps/gnu/bits/utmpx.h [__USE_GNU] Include paths.h. (_PATH_UTMPX): Define to _PATH_UTMP. (_PATH_WTMPX): Define to _PATH_WTMPX. (RUN_LVL): Define only if __USE_GNU. (ACCOUNTING): Define if __USE_GNU. * sysdeps/gnu/setutxent.c: New file. * sysdeps/gnu/getutxent.c: New file. * sysdeps/gnu/endutxent.c: New file. * sysdeps/gnu/getutxid.c: New file. * sysdeps/gnu/getutxline.c: New file. * sysdeps/gnu/pututxline.c: New file. * sysdeps/gnu/utmpxname.c: New file. * sysdeps/gnu/updwtmpx.c: New file. * sysdeps/unix/sysv/linux/paths.h (_PATH_UTMP_DB): Remove. * sysdeps/generic/bits/utmpx.h: Remove. 1998-04-20 Ulrich Drepper <drepper@cygnus.com> * posix/wordexp-test.c (main): Initialize ifs element of ts for ~root test. 1998-04-17 07:53 H.J. Lu <hjl@gnu.org> * sysdeps/unix/sysv/linux/i386/s_pread64.S: Fix a typo. 1998-04-17 11:32 Ulrich Drepper <drepper@cygnus.com> * libio/oldfileops.c (_IO_old_file_seekoff): Define temporary st variable using _G_stat64. * libio/fileops.c: Remove macro definition of fstat, it is in the global header. Reported by Thorsten Kukuk <kukuk@weber.uni-paderborn.de>. 1998-04-17 Philip Blundell <pb@nexus.co.uk> * sysdeps/arm/strlen.S: New file, based on code by Matthew Wilcox <willy@odie.barnet.ac.uk>. 1998-04-16 Philip Blundell <Philip.Blundell@pobox.com> * inet/netinet/in.h (IN6_IS_ADDR_MC_NODELOCAL): New macro, required by IPv6 Basic API. (IN6_IS_ADDR_MC_LINKLOCAL): Likewise. (IN6_IS_ADDR_MC_SITELOCAL): Likewise. (IN6_IS_ADDR_MC_ORGLOCAL): Likewise. (IN6_IS_ADDR_MC_GLOBAL): Likewise.
Diffstat (limited to 'iconv/loop.c')
-rw-r--r--iconv/loop.c226
1 files changed, 226 insertions, 0 deletions
diff --git a/iconv/loop.c b/iconv/loop.c
new file mode 100644
index 0000000000..b8657d574c
--- /dev/null
+++ b/iconv/loop.c
@@ -0,0 +1,226 @@
+/* Conversion loop frame work.
+ Copyright (C) 1998 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+/* This file provides a frame for the reader loop in all conversion modules.
+ The actual code must (of course) be provided in the actual module source
+ code but certain actions can be written down generically, with some
+ customization options which are these:
+
+ MIN_NEEDED_INPUT minimal number of input bytes needed for the next
+ conversion.
+ MIN_NEEDED_OUTPUT minimal number of bytes produced by the next round
+ of conversion.
+
+ MAX_NEEDED_INPUT you guess it, this is the maximal number of input
+ bytes needed. It defaults to MIN_NEEDED_INPUT
+ MAX_NEEDED_OUTPUT likewise for output bytes.
+
+ Both values have a default of 1.
+
+ LOOPFCT name of the function created. If not specified
+ the name is `loop' but this prevents the use
+ of multiple functions in the same file.
+
+ COUNT_CONVERTED optional macro which is used to count the actual
+ number of characters converted. For some conversion
+ it is easy to compute the value afterwards, but for
+ others explicit counting is cheaper.
+
+ BODY this is supposed to expand to the body of the loop.
+ The user must provide this.
+*/
+
+#include <gconv.h>
+#include <sys/param.h> /* For MIN. */
+#define __need_size_t
+#include <stddef.h>
+
+
+/* We need at least one byte for the next round. */
+#ifndef MIN_NEEDED_INPUT
+# define MIN_NEEDED_INPUT 1
+#endif
+
+/* Let's see how many bytes we produce. */
+#ifndef MAX_NEEDED_INPUT
+# define MAX_NEEDED_INPUT MIN_NEEDED_INPUT
+#endif
+
+/* We produce at least one byte in the next round. */
+#ifndef MIN_NEEDED_OUTPUT
+# define MIN_NEEDED_OUTPUT 1
+#endif
+
+/* Let's see how many bytes we produce. */
+#ifndef MAX_NEEDED_OUTPUT
+# define MAX_NEEDED_OUTPUT MIN_NEEDED_OUTPUT
+#endif
+
+/* Default name for the function. */
+#ifndef LOOPFCT
+# define LOOPFCT loop
+#endif
+
+/* Make sure we have a loop body. */
+#ifndef BODY
+# error "Definition of BODY missing for function" LOOPFCT
+#endif
+
+/* We can calculate the number of converted characters easily if one
+ of the character sets has a fixed width. */
+#ifndef COUNT_CONVERTED
+# if MIN_NEEDED_INPUT == MAX_NEEDED_INPUT
+# if MIN_NEEDED_OUTPUT == MAX_NEEDED_OUTPUT
+/* Decide whether one of the charsets has size 1. */
+# if MIN_NEEDED_INPUT == 1
+# define COUNT_CONVERTED (inptr - *inptrp)
+# elif MIN_NEEDED_OUTPUT == 1
+# define COUNT_CONVERTED (outptr - *outptrp)
+# else
+/* Else we should see whether one of the two numbers is a power of 2. */
+# define COUNT_CONVERTED \
+ ((MIN_NEEDED_INPUT & (-MIN_NEEDED_INPUT)) == MIN_NEEDED_INPUT \
+ ? (inptr - *inptrp) : (outptr - *outptrp))
+# endif
+# else
+# define COUNT_CONVERTED (inptr - *inptrp)
+# endif
+# elif MIN_NEEDED_OUTPUT == MAX_NEEDED_OUTPUT
+# define COUNT_CONVERTED (outptr - *outptrp)
+# endif
+#endif
+
+
+/* The function returns the status, as defined in gconv.h. */
+static inline int
+LOOPFCT (const unsigned char **inptrp, const unsigned char *inend,
+ unsigned char **outptrp, unsigned char *outend, mbstate_t *state,
+ void *data, size_t *converted)
+{
+ int result = GCONV_OK;
+ const unsigned char *inptr = *inptrp;
+ unsigned char *outptr = *outptrp;
+#ifndef COUNT_CONVERTED
+ size_t done = 0;
+#endif
+
+ /* We run one loop where we avoid checks for underflow/overflow of the
+ buffers to speed up the conversion a bit. */
+ size_t min_in_rounds = (inend - inptr) / MAX_NEEDED_INPUT;
+ size_t min_out_rounds = (outend - outptr) / MAX_NEEDED_OUTPUT;
+ size_t min_rounds = MIN (min_in_rounds, min_out_rounds);
+
+#undef NEED_LENGTH_TEST
+#define NEED_LENGTH_TEST 0
+ while (min_rounds-- > 0)
+ {
+ /* Here comes the body the user provides. It can stop with RESULT
+ set to GCONV_INCOMPLETE_INPUT (if the size of the input characters
+ vary in size), GCONV_ILLEGAL_INPUT, or GCONV_FULL_OUTPUT (if the
+ output characters vary in size. */
+ BODY
+
+ /* If necessary count the successful conversion. */
+#ifndef COUNT_CONVERTED
+ ++done;
+#endif
+ }
+
+ if (result == GCONV_OK)
+ {
+#if MIN_NEEDED_INPUT == MAX_NEEDED_INPUT \
+ && MIN_NEEDED_OUTPUT == MAX_NEEDED_OUTPUT
+ /* We don't need to start another loop since we were able to determine
+ the maximal number of characters to copy in advance. What remains
+ to be determined is the status. */
+ if (inptr == inend)
+ /* No more input. */
+ result = GCONV_EMPTY_INPUT;
+ else if ((MIN_NEEDED_OUTPUT != 1 && outptr + MIN_NEEDED_OUTPUT > outend)
+ || (MIN_NEEDED_OUTPUT == 1 && outptr >= outend))
+ /* Overflow in the output buffer. */
+ result = GCONV_FULL_OUTPUT;
+ else
+ /* We have something left in the input buffer. */
+ result = GCONV_INCOMPLETE_INPUT;
+#else
+ result = GCONV_EMPTY_INPUT;
+
+# undef NEED_LENGTH_TEST
+# define NEED_LENGTH_TEST 1
+ while (inptr != inend)
+ {
+ /* `if' cases for MIN_NEEDED_OUTPUT ==/!= 1 is made to help the
+ compiler generating better code. It will optimized away
+ since MIN_NEEDED_OUTPUT is always a constant. */
+ if ((MIN_NEEDED_OUTPUT != 1 && outptr + MIN_NEEDED_OUTPUT > outend)
+ || (MIN_NEEDED_OUTPUT == 1 && outptr >= outend))
+ {
+ /* Overflow in the output buffer. */
+ result = GCONV_FULL_OUTPUT;
+ break;
+ }
+ if (MIN_NEEDED_INPUT > 1 && inptr + MIN_NEEDED_INPUT > inend)
+ {
+ /* We don't have enough input for another complete input
+ character. */
+ result = GCONV_INCOMPLETE_INPUT;
+ break;
+ }
+
+ /* Here comes the body the user provides. It can stop with
+ RESULT set to GCONV_INCOMPLETE_INPUT (if the size of the
+ input characters vary in size), GCONV_ILLEGAL_INPUT, or
+ GCONV_FULL_OUTPUT (if the output characters vary in size. */
+ BODY
+
+ /* If necessary count the successful conversion. */
+# ifndef COUNT_CONVERTED
+ ++done;
+# endif
+ }
+#endif /* Input and output charset are not both fixed width. */
+ }
+
+ /* Add the number of characters we actually converted. */
+#ifdef COUNT_CONVERTED
+ *converted += COUNT_CONVERTED;
+#else
+ *converted += done;
+#endif
+
+ /* Update the pointers pointed to by the parameters. */
+ *inptrp = inptr;
+ *outptrp = outptr;
+
+ return result;
+}
+
+
+/* We remove the macro definitions so that we can include this file again
+ for the definition of another function. */
+#undef MIN_NEEDED_INPUT
+#undef MAX_NEEDED_INPUT
+#undef MIN_NEEDED_OUTPUT
+#undef MAX_NEEDED_OUTPUT
+#undef LOOPFCT
+#undef COUNT_CONVERTED
+#undef BODY
+#undef LOOPFCT