mirror of
https://github.com/bulletphysics/bullet3
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393 lines
8.6 KiB
C
393 lines
8.6 KiB
C
/*
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* Copyright 1993-2002 Christopher Seiwald and Perforce Software, Inc.
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*
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* This file is part of Jam - see jam.c for Copyright information.
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*/
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/*
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* fileunix.c - manipulate file names and scan directories on UNIX/AmigaOS
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*
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* External routines:
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*
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* file_dirscan() - scan a directory for files
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* file_time() - get timestamp of file, if not done by file_dirscan()
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* file_archscan() - scan an archive for files
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*
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* File_dirscan() and file_archscan() call back a caller provided function
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* for each file found. A flag to this callback function lets file_dirscan()
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* and file_archscan() indicate that a timestamp is being provided with the
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* file. If file_dirscan() or file_archscan() do not provide the file's
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* timestamp, interested parties may later call file_time().
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*
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* 04/08/94 (seiwald) - Coherent/386 support added.
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* 12/19/94 (mikem) - solaris string table insanity support
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* 02/14/95 (seiwald) - parse and build /xxx properly
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* 05/03/96 (seiwald) - split into pathunix.c
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* 11/21/96 (peterk) - BEOS does not have Unix-style archives
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* 01/08/01 (seiwald) - closure param for file_dirscan/file_archscan
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* 04/03/01 (seiwald) - AIX uses SARMAG
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* 07/16/02 (seiwald) - Support BSD style long filename in archives.
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* 11/04/02 (seiwald) - const-ing for string literals
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* 12/27/02 (seiwald) - support for AIX big archives
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* 12/30/02 (seiwald) - terminate ar_hdr for solaris sscanf()
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* 12/30/02 (seiwald) - skip solaris' empty archive member names (/, //xxx)
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*/
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# include "jam.h"
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# include "filesys.h"
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# include "pathsys.h"
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# ifdef USE_FILEUNIX
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# if defined( OS_SEQUENT ) || \
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defined( OS_DGUX ) || \
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defined( OS_SCO ) || \
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defined( OS_ISC )
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# define PORTAR 1
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# endif
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# if defined( OS_RHAPSODY ) || \
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defined( OS_MACOSX ) || \
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defined( OS_NEXT )
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/* need unistd for rhapsody's proper lseek */
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# include <sys/dir.h>
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# include <unistd.h>
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# define STRUCT_DIRENT struct direct
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# else
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# include <dirent.h>
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# define STRUCT_DIRENT struct dirent
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# endif
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# ifdef OS_COHERENT
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# include <arcoff.h>
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# define HAVE_AR
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# endif
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# if defined( OS_MVS ) || \
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defined( OS_INTERIX )
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#define ARMAG "!<arch>\n"
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#define SARMAG 8
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#define ARFMAG "`\n"
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struct ar_hdr /* archive file member header - printable ascii */
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{
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char ar_name[16]; /* file member name - `/' terminated */
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char ar_date[12]; /* file member date - decimal */
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char ar_uid[6]; /* file member user id - decimal */
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char ar_gid[6]; /* file member group id - decimal */
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char ar_mode[8]; /* file member mode - octal */
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char ar_size[10]; /* file member size - decimal */
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char ar_fmag[2]; /* ARFMAG - string to end header */
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};
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# define HAVE_AR
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# endif
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# if defined( OS_QNX ) || \
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defined( OS_BEOS ) || \
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defined( OS_MPEIX )
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# define NO_AR
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# define HAVE_AR
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# endif
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# ifndef HAVE_AR
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# ifdef _AIX43
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/* AIX 43 ar SUPPORTs only __AR_BIG__ */
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# define __AR_BIG__
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# endif
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# include <ar.h>
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# endif
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/*
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* file_dirscan() - scan a directory for files
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*/
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void
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file_dirscan(
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const char *dir,
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scanback func,
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void *closure )
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{
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PATHNAME f;
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DIR *d;
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STRUCT_DIRENT *dirent;
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char filename[ MAXJPATH ];
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/* First enter directory itself */
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memset( (char *)&f, '\0', sizeof( f ) );
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f.f_dir.ptr = dir;
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f.f_dir.len = strlen(dir);
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dir = *dir ? dir : ".";
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/* Special case / : enter it */
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if( f.f_dir.len == 1 && f.f_dir.ptr[0] == '/' )
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(*func)( closure, dir, 0 /* not stat()'ed */, (time_t)0 );
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/* Now enter contents of directory */
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if( !( d = opendir( dir ) ) )
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return;
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if( DEBUG_BINDSCAN )
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printf( "scan directory %s\n", dir );
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while( dirent = readdir( d ) )
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{
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# ifdef old_sinix
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/* Broken structure definition on sinix. */
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f.f_base.ptr = dirent->d_name - 2;
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# else
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f.f_base.ptr = dirent->d_name;
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# endif
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f.f_base.len = strlen( f.f_base.ptr );
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path_build( &f, filename, 0 );
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(*func)( closure, filename, 0 /* not stat()'ed */, (time_t)0 );
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}
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closedir( d );
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}
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/*
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* file_time() - get timestamp of file, if not done by file_dirscan()
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*/
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int
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file_time(
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const char *filename,
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time_t *time )
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{
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struct stat statbuf;
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if( stat( filename, &statbuf ) < 0 )
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return -1;
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*time = statbuf.st_mtime;
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return 0;
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}
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/*
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* file_archscan() - scan an archive for files
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*/
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# ifndef AIAMAG /* God-fearing UNIX */
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# define SARFMAG 2
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# define SARHDR sizeof( struct ar_hdr )
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void
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file_archscan(
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const char *archive,
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scanback func,
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void *closure )
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{
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# ifndef NO_AR
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struct ar_hdr ar_hdr;
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char buf[ MAXJPATH ];
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long offset;
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char *string_table = 0;
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int fd;
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if( ( fd = open( archive, O_RDONLY, 0 ) ) < 0 )
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return;
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if( read( fd, buf, SARMAG ) != SARMAG ||
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strncmp( ARMAG, buf, SARMAG ) )
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{
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close( fd );
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return;
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}
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offset = SARMAG;
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if( DEBUG_BINDSCAN )
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printf( "scan archive %s\n", archive );
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while( read( fd, &ar_hdr, SARHDR ) == SARHDR &&
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!memcmp( ar_hdr.ar_fmag, ARFMAG, SARFMAG ) )
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{
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long lar_date;
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long lar_size;
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char lar_name[256];
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char *dst = lar_name;
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/* solaris sscanf() does strlen first, so terminate somewhere */
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ar_hdr.ar_fmag[0] = 0;
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/* Get date & size */
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sscanf( ar_hdr.ar_date, "%ld", &lar_date );
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sscanf( ar_hdr.ar_size, "%ld", &lar_size );
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/* Handle solaris string table.
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** The entry under the name // is the table,
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** and entries with the name /nnnn refer to the table.
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*/
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if( ar_hdr.ar_name[0] != '/' )
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{
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/* traditional archive entry names:
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** ends at the first space, /, or null.
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*/
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char *src = ar_hdr.ar_name;
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const char *e = src + sizeof( ar_hdr.ar_name );
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while( src < e && *src && *src != ' ' && *src != '/' )
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*dst++ = *src++;
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}
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else if( ar_hdr.ar_name[1] == '/' )
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{
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/* this is the "string table" entry of the symbol table,
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** which holds strings of filenames that are longer than
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** 15 characters (ie. don't fit into a ar_name)
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*/
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string_table = (char *)malloc(lar_size);
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lseek(fd, offset + SARHDR, 0);
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if( read(fd, string_table, lar_size) != lar_size )
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printf( "error reading string table\n" );
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}
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else if( string_table && ar_hdr.ar_name[1] != ' ' )
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{
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/* Long filenames are recognized by "/nnnn" where nnnn is
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** the offset of the string in the string table represented
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** in ASCII decimals.
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*/
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char *src = string_table + atoi( ar_hdr.ar_name + 1 );
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while( *src != '/' )
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*dst++ = *src++;
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}
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/* Terminate lar_name */
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*dst = 0;
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/* Modern (BSD4.4) long names: if the name is "#1/nnnn",
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** then the actual name is the nnnn bytes after the header.
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*/
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if( !strcmp( lar_name, "#1" ) )
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{
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int len = atoi( ar_hdr.ar_name + 3 );
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if( read( fd, lar_name, len ) != len )
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printf("error reading archive entry\n");
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lar_name[len] = 0;
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}
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/* Build name and pass it on. */
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if( lar_name[0] )
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{
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if( DEBUG_BINDSCAN )
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printf( "archive name %s found\n", lar_name );
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sprintf( buf, "%s(%s)", archive, lar_name );
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(*func)( closure, buf, 1 /* time valid */, (time_t)lar_date );
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}
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/* Position at next member */
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offset += SARHDR + ( ( lar_size + 1 ) & ~1 );
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lseek( fd, offset, 0 );
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}
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if (string_table)
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free(string_table);
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close( fd );
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# endif /* NO_AR */
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}
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# else /* AIAMAG - RS6000 AIX */
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void
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file_archscan(
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const char *archive,
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scanback func,
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void *closure )
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{
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struct fl_hdr fl_hdr;
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struct {
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struct ar_hdr hdr;
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char pad[ 256 ];
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} ar_hdr ;
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char buf[ MAXJPATH ];
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long offset;
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int fd;
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if( ( fd = open( archive, O_RDONLY, 0 ) ) < 0 )
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return;
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# ifdef __AR_BIG__
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if( read( fd, (char *)&fl_hdr, FL_HSZ ) != FL_HSZ ||
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strncmp( AIAMAGBIG, fl_hdr.fl_magic, SAIAMAG ) )
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{
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if( strncmp( AIAMAG, fl_hdr.fl_magic, SAIAMAG ) )
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printf( "Can't read new archive %s before AIX 4.3.\n" );
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close( fd );
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return;
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}
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# else
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if( read( fd, (char *)&fl_hdr, FL_HSZ ) != FL_HSZ ||
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strncmp( AIAMAG, fl_hdr.fl_magic, SAIAMAG ) )
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{
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close( fd );
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return;
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}
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# endif
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sscanf( fl_hdr.fl_fstmoff, "%ld", &offset );
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if( DEBUG_BINDSCAN )
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printf( "scan archive %s\n", archive );
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while( offset > 0 &&
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lseek( fd, offset, 0 ) >= 0 &&
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read( fd, &ar_hdr, sizeof( ar_hdr ) ) >= sizeof( ar_hdr.hdr ) )
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{
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long lar_date;
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int lar_namlen;
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sscanf( ar_hdr.hdr.ar_namlen, "%d", &lar_namlen );
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sscanf( ar_hdr.hdr.ar_date, "%ld", &lar_date );
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sscanf( ar_hdr.hdr.ar_nxtmem, "%ld", &offset );
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if( !lar_namlen )
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continue;
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ar_hdr.hdr._ar_name.ar_name[ lar_namlen ] = '\0';
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sprintf( buf, "%s(%s)", archive, ar_hdr.hdr._ar_name.ar_name );
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(*func)( closure, buf, 1 /* time valid */, (time_t)lar_date );
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}
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close( fd );
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}
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# endif /* AIAMAG - RS6000 AIX */
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# endif /* USE_FILEUNIX */
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