Werner Lemberg pushed to branch master at FreeType / FreeType
Commits:
-
72a8d652
by Werner Lemberg at 2023-03-07T07:16:59+01:00
* src/tools/apinames.c (panic): Accept variable number of arguments.
-
092f9d98
by Werner Lemberg at 2023-03-07T07:28:32+01:00
[apinames] Fix VMS handling of overly long function names.
Based on ideas from Jouk Jansen <joukj@hrem.nano.tudelft.nl>.
* src/tools/vms_shorten_symbol.c: New file, taken from
https://sourceforge.net/p/vms-ports/vmsshortsym/ci/default/tree/vms_shorten_symbol.c
with some minor edits to allow compilation with C++ and being included in
another source code file.
* src/tools/apinames.c: Include `vms_shorten_symbol.c`.
(PROGRAM_VERSION): Set to '0.5'.
(names_dump) [OUTPUT_VMS_OPT]: Call `vms_shorten_symbol` to get unique function
identifiers not longer than 31 characters.
2 changed files:
Changes:
src/tools/apinames.c
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@@ -18,11 +18,14 @@ |
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#include <stdio.h>
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#include <stdlib.h>
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+#include <stdarg.h>
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#include <string.h>
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#include <ctype.h>
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+#include "vms_shorten_symbol.c"
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+
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#define PROGRAM_NAME "apinames"
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-#define PROGRAM_VERSION "0.4"
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+#define PROGRAM_VERSION "0.5"
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#define LINEBUFF_SIZE 1024
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@@ -41,9 +44,20 @@ typedef enum OutputFormat_ |
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static void
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-panic( const char* message )
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+panic( const char* fmt,
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+ ... )
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{
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- fprintf( stderr, "PANIC: %s\n", message );
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+ va_list ap;
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+
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+
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+ fprintf( stderr, "PANIC: " );
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+
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+ va_start( ap, fmt );
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+ vfprintf( stderr, fmt, ap );
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+ va_end( ap );
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+
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+ fprintf( stderr, "\n" );
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+
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exit(2);
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}
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@@ -202,12 +216,23 @@ names_dump( FILE* out, |
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break;
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case OUTPUT_VMS_OPT:
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- fprintf( out, "GSMATCH=LEQUAL,2,0\n"
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- "CASE_SENSITIVE=YES\n"
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- "SYMBOL_VECTOR=(-\n" );
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- for ( nn = 0; nn < num_names - 1; nn++ )
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- fprintf( out, " %s=PROCEDURE,-\n", the_names[nn].name );
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- fprintf( out, " %s=PROCEDURE)\n", the_names[num_names - 1].name );
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+ fprintf( out, "case_sensitive=YES\n" );
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+
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+ for ( nn = 0; nn < num_names; nn++ )
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+ {
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+ char short_symbol[32];
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+
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+
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+ if ( vms_shorten_symbol( the_names[nn].name, short_symbol, 1 ) == -1 )
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+ panic( "could not shorten name '%s'", the_names[nn].name );
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+ fprintf( out, "symbol_vector = ( %s = PROCEDURE)\n", short_symbol );
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+
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+ strcat( the_names[nn].name , "64__" );
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+
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+ if ( vms_shorten_symbol( the_names[nn].name, short_symbol, 1 ) == -1 )
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+ panic( "could not shorten name '%s'", the_names[nn].name );
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+ fprintf( out, "symbol_vector = ( %s = PROCEDURE)\n", short_symbol );
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+ }
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break;
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src/tools/vms_shorten_symbol.c
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+/*
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+ * Copyright (c) 2010, 2017 Craig A. Berry
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+ *
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+ * Permission is hereby granted, free of charge, to any person obtaining a copy
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+ * of this software and associated documentation files (the "Software"), to deal
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+ * in the Software without restriction, including without limitation the rights
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+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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+ * copies of the Software, and to permit persons to whom the Software is
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+ * furnished to do so, subject to the following conditions:
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+ * The above copyright notice and this permission notice shall be included in
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+ * all copies or substantial portions of the Software.
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+ *
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+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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+ * THE SOFTWARE.
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+ */
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+
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+/* vms_shorten_symbol
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+ *
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+ * This program provides shortening of long symbols (> 31 characters) using the
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+ * same mechanism as the OpenVMS C compiler. The basic procedure is to compute
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+ * an AUTODIN II checksum of the entire symbol, encode the checksum in base32,
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+ * and glue together a shortened symbol from the first 23 characters of the
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+ * original symbol plus the encoded checksum appended. The output format is
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+ * the same used in the name mangler database, stored by default in
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+ * [.CXX_REPOSITORY]CXX$DEMANGLER_DB.
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+ *
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+ * To obtain the same result as CC/NAMES=SHORTENED, run like so:
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+ *
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+ * $ mcr []vms_shorten_symbol "Please_forgive_this_absurdly_long_symbol_name"
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+ * PLEASE_FORGIVE_THIS_ABS1ARO4QU$Please_forgive_this_absurdly_long_symbol_name
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+ *
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+ * To obtain the same result as CC/NAMES=(SHORTENED,AS_IS), pass a non-zero
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+ * value as the second argument, like so:
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+ *
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+ * $ mcr []vms_shorten_symbol "Please_forgive_this_absurdly_long_symbol_name" 1
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+ * Please_forgive_this_abs3rv8rnn$Please_forgive_this_absurdly_long_symbol_name
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+ */
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+
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+#include <ctype.h>
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+#include <stdio.h>
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+#include <stdlib.h>
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+#include <string.h>
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+
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+#ifdef __VMS
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+#define UINT32 unsigned int
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+#else
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+#include <inttypes.h>
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+#define UINT32 uint32_t
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+#endif
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+
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+extern UINT32 crc32(const char *input_string);
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+extern int u32_to_base32(UINT32 input, char *output);
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+extern int vms_shorten_symbol(const char *symbol, char *shortened, char as_is_flag);
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+
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+/*
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+ * This routine implements the AUTODIN II polynomial.
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+ */
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+
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+UINT32
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+crc32(const char *input_string)
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+{
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+
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+/*
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+ * CRC code and data based partly on FreeBSD implementation, which
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+ * notes:
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+ *
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+ * The crc32 functions and data was originally written by Spencer
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+ * Garrett <srg@quick.com> and was cleaned from the PostgreSQL source
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+ * tree via the files contrib/ltree/crc32.[ch]. No license was
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+ * included, therefore it is assumed that this code is public
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+ * domain. Attribution still noted.
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+ *
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+ * (I think they mean "gleaned" not "cleaned".)
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+ */
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+
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+ static const UINT32 autodin_ii_table[256] = {
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+ 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
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+ 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
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+ 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
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+ 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
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+ 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
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+ 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
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+ 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
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+ 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
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+ 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
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+ 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
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92
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+ 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
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93
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+ 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
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94
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+ 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
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95
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+ 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
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96
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+ 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
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97
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+ 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
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98
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+ 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
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+ 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
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+ 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
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101
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+ 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
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102
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+ 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
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103
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+ 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
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104
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+ 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
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105
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+ 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
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106
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+ 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
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107
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+ 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
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108
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+ 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
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109
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+ 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
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110
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+ 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
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111
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+ 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
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112
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+ 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
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113
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+ 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
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114
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+ 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
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115
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+ 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
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116
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+ 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
|
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117
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+ 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
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118
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+ 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
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119
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+ 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
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120
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+ 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
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121
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+ 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
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122
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+ 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
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123
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+ 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
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124
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+ 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d,
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|
125
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+ };
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126
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+
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127
|
+ UINT32 crc = ~0U;
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128
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+ char *c;
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129
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+ for (c = (char *)input_string; *c; ++c)
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130
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+ crc = (crc >> 8) ^ autodin_ii_table[(crc ^ *c) & 0xff];
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131
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+ return ~crc;
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132
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+}
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133
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+
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|
134
|
+/*
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|
135
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+ * This is the RFC2938 variant of base32, not RFC3548, Crockford's, or
|
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136
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+ * other newer variant. It produces an 8-byte encoded character string
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137
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+ * (plus trailing null) from a 32-bit integer input.
|
|
138
|
+ */
|
|
139
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+
|
|
140
|
+int
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|
141
|
+u32_to_base32(UINT32 input, char *output)
|
|
142
|
+{
|
|
143
|
+ static const char base32hex_table[32] = {
|
|
144
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+ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
|
|
145
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+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j',
|
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146
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+ 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't',
|
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147
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+ 'u', 'v'
|
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148
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+ };
|
|
149
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+ int i;
|
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150
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+
|
|
151
|
+ /*
|
|
152
|
+ * Grab lowest 5 bits and look up conversion in table. Lather, rinse,
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153
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+ * repeat for a total of 7, 5-bit chunks to accommodate 32 bits of input.
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154
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+ */
|
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155
|
+ for (i = 0; i < 7; i++) {
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156
|
+ output[6 - i] = base32hex_table[input & 0x1f];
|
|
157
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+ input >>= 5; /* position to look at next 5 */
|
|
158
|
+ }
|
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159
|
+ output[7] = '$'; /* It's DEC, so use '$' not '=' to pad. */
|
|
160
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+ output[8] = '\0';
|
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161
|
+ return 0;
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162
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+}
|
|
163
|
+
|
|
164
|
+/*
|
|
165
|
+ * Take an input symbol name of arbitrary length and produce a symbol shortened
|
|
166
|
+ * to 31 characters. The shortened symbol consists of the first 23 characters
|
|
167
|
+ * of the original symbol plus the 8 characters of the encoded checksum. The
|
|
168
|
+ * third argument is a boolean indicating whether to emulate the compiler's
|
|
169
|
+ * /NAMES=AS_IS option. When false (the compiler's default), the shortened
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170
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+ * symbol will be upper cased. When the original symbol is 31 characters or
|
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171
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+ * fewer in length, no checksum will be appended and the original symbol is
|
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172
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+ * returned verbatim (though upper cased if the as_is_flag is false).
|
|
173
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+ */
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|
174
|
+
|
|
175
|
+int
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|
176
|
+vms_shorten_symbol(const char *input_symbol, char *shortened, char as_is_flag)
|
|
177
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+{
|
|
178
|
+ char b32str[9];
|
|
179
|
+ UINT32 crc;
|
|
180
|
+ char *c, *symbol;
|
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181
|
+ int symlen;
|
|
182
|
+
|
|
183
|
+ symlen = strlen(input_symbol);
|
|
184
|
+ symbol = (char *)malloc(symlen + 1);
|
|
185
|
+ if (symbol == NULL)
|
|
186
|
+ return -1;
|
|
187
|
+
|
|
188
|
+ strncpy(symbol, input_symbol, symlen);
|
|
189
|
+ symbol[symlen] = '\0';
|
|
190
|
+
|
|
191
|
+ if (!as_is_flag) {
|
|
192
|
+ for (c = symbol; *c; c++)
|
|
193
|
+ *c = toupper(*c);
|
|
194
|
+ }
|
|
195
|
+
|
|
196
|
+ if (symlen <= 31) {
|
|
197
|
+ strncpy(shortened, symbol, symlen);
|
|
198
|
+ shortened[symlen] = '\0';
|
|
199
|
+ free(symbol);
|
|
200
|
+ return 0;
|
|
201
|
+ }
|
|
202
|
+
|
|
203
|
+ /*
|
|
204
|
+ * Compute the checksum on the whole symbol.
|
|
205
|
+ */
|
|
206
|
+
|
|
207
|
+ crc = crc32(symbol);
|
|
208
|
+
|
|
209
|
+ /* The compiler does not use the inverted checksum, so we invert it
|
|
210
|
+ * back before encoding in base32.
|
|
211
|
+ */
|
|
212
|
+
|
|
213
|
+ if (u32_to_base32(~crc, (char *)&b32str) == -1) {
|
|
214
|
+ free(symbol);
|
|
215
|
+ return -1;
|
|
216
|
+ }
|
|
217
|
+
|
|
218
|
+ if (!as_is_flag) {
|
|
219
|
+ for (c = (char *)&b32str; *c; c++)
|
|
220
|
+ *c = toupper(*c);
|
|
221
|
+ }
|
|
222
|
+
|
|
223
|
+ sprintf(shortened, "%.23s%.8s", symbol, b32str);
|
|
224
|
+ shortened[31] = '\0';
|
|
225
|
+ free(symbol);
|
|
226
|
+ return 0;
|
|
227
|
+}
|
|
228
|
+
|
|
229
|
+#ifdef TEST_MAIN
|
|
230
|
+int
|
|
231
|
+main(int argc, char **argv)
|
|
232
|
+{
|
|
233
|
+ char short_symbol[32];
|
|
234
|
+ char as_is_flag = 0;
|
|
235
|
+
|
|
236
|
+ if (argc < 2) {
|
|
237
|
+ fprintf(stderr, "Usage: %s <symbol name> [<AS_IS flag>]\n", argv[0]);
|
|
238
|
+ exit(EXIT_FAILURE);
|
|
239
|
+ }
|
|
240
|
+ if (argc > 2)
|
|
241
|
+ as_is_flag = 1;
|
|
242
|
+
|
|
243
|
+ if (vms_shorten_symbol(argv[1], (char *)&short_symbol, as_is_flag) == -1) {
|
|
244
|
+ fprintf(stderr, "Symbol shortening failed\n");
|
|
245
|
+ exit(EXIT_FAILURE);
|
|
246
|
+ }
|
|
247
|
+
|
|
248
|
+ printf("%s%s\n", (char *)&short_symbol, argv[1]);
|
|
249
|
+}
|
|
250
|
+#endif |
|