Mercurial > octave
view src/interp-core/ls-oct-binary.cc @ 15096:909a2797935b
maint: Move interp source code without DEFUNs to interp-core/ dir.
* src/Makefile.am, interpfcn/module.mk, operators/module.mk,
parse-tree/module.mk: Update build system by moving source lists and rules
to the correct directory.
* Cell.cc, Cell.h, c-file-ptr-stream.cc, c-file-ptr-stream.h, comment-list.cc,
comment-list.h, cutils.c, cutils.h, defun-dld.h, defun-int.h, display.cc,
display.h, dynamic-ld.cc, dynamic-ld.h, gl-render.cc, gl-render.h,
gl2ps-renderer.cc, gl2ps-renderer.h, gl2ps.c, gl2ps.h, gripes.cc, gripes.h,
jit-ir.cc, jit-ir.h, jit-typeinfo.cc, jit-typeinfo.h, jit-util.cc, jit-util.h,
ls-ascii-helper.cc, ls-ascii-helper.h, ls-hdf5.cc, ls-hdf5.h, ls-mat-ascii.cc,
ls-mat-ascii.h, ls-mat4.cc, ls-mat4.h, ls-mat5.cc, ls-mat5.h, ls-oct-binary.cc,
ls-oct-binary.h, ls-utils.cc, ls-utils.h, matherr.c, mex.cc, mex.h, mexproto.h,
module.mk, mxarray.in.h, oct-errno.h, oct-errno.in.cc, oct-fstrm.cc,
oct-fstrm.h, oct-hdf5.h, oct-iostrm.cc, oct-iostrm.h, oct-lvalue.cc,
oct-lvalue.h, oct-map.cc, oct-map.h, oct-obj.cc, oct-obj.h, oct-prcstrm.cc,
oct-prcstrm.h, oct-procbuf.cc, oct-procbuf.h, oct-stdstrm.h, oct-stream.cc,
oct-stream.h, oct-strstrm.cc, oct-strstrm.h, oct.h, procstream.cc,
procstream.h, pt-jit.cc, pt-jit.h, siglist.c, siglist.h, sparse-xdiv.cc,
sparse-xdiv.h, sparse-xpow.cc, sparse-xpow.h, txt-eng-ft.cc, txt-eng-ft.h,
txt-eng.h, unwind-prot.cc, unwind-prot.h, xdiv.cc, xdiv.h, xgl2ps.c, xnorm.cc,
xnorm.h, xpow.cc, xpow.h, zfstream.cc, zfstream.h: Move from src/ dir to
src/interp-core dir.
* ops.h: Move to operators/ directory.
* octave.gperf, token.cc, token.h: Move to parse-tree directory.
author | Rik <rik@octave.org> |
---|---|
date | Fri, 03 Aug 2012 13:18:21 -0700 |
parents | src/ls-oct-binary.cc@72c96de7a403 |
children |
line wrap: on
line source
/* Copyright (C) 1996-2012 John W. Eaton This file is part of Octave. Octave is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. Octave 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 General Public License for more details. You should have received a copy of the GNU General Public License along with Octave; see the file COPYING. If not, see <http://www.gnu.org/licenses/>. */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <cfloat> #include <cstring> #include <cctype> #include <fstream> #include <iomanip> #include <iostream> #include <string> #include <vector> #include "byte-swap.h" #include "data-conv.h" #include "file-ops.h" #include "glob-match.h" #include "lo-mappers.h" #include "mach-info.h" #include "oct-env.h" #include "oct-time.h" #include "quit.h" #include "str-vec.h" #include "oct-locbuf.h" #include "Cell.h" #include "defun.h" #include "error.h" #include "gripes.h" #include "load-save.h" #include "oct-obj.h" #include "oct-map.h" #include "ov-cell.h" #include "pager.h" #include "pt-exp.h" #include "sysdep.h" #include "unwind-prot.h" #include "utils.h" #include "variables.h" #include "version.h" #include "dMatrix.h" #include "ls-utils.h" #include "ls-oct-binary.h" // Extract one value (scalar, matrix, string, etc.) from stream IS and // place it in TC, returning the name of the variable. If the value // is tagged as global in the file, return TRUE in GLOBAL. If SWAP // is TRUE, swap bytes after reading. // // The data is expected to be in the following format: // // Header (one per file): // ===================== // // object type bytes // ------ ---- ----- // magic number string 10 // // float format integer 1 // // // Data (one set for each item): // ============================ // // object type bytes // ------ ---- ----- // name_length integer 4 // // name string name_length // // doc_length integer 4 // // doc string doc_length // // global flag integer 1 // // data type char 1 // // In general "data type" is 255, and in that case the next arguments // in the data set are // // object type bytes // ------ ---- ----- // type_length integer 4 // // type string type_length // // The string "type" is then used with octave_value_typeinfo::lookup_type // to create an octave_value of the correct type. The specific load/save // function is then called. // // For backward compatiablity "data type" can also be a value between 1 // and 7, where this defines a hardcoded octave_value of the type // // data type octave_value // --------- ------------ // 1 scalar // 2 matrix // 3 complex scalar // 4 complex matrix // 5 string (old style storage) // 6 range // 7 string // // Except for "data type" equal 5 that requires special treatment, these // old style "data type" value also cause the specific load/save functions // to be called. FILENAME is used for error messages. std::string read_binary_data (std::istream& is, bool swap, oct_mach_info::float_format fmt, const std::string& filename, bool& global, octave_value& tc, std::string& doc) { std::string retval; unsigned char tmp = 0; int32_t name_len = 0; int32_t doc_len = 0; doc.resize (0); // We expect to fail here, at the beginning of a record, so not // being able to read another name should not result in an error. is.read (reinterpret_cast<char *> (&name_len), 4); if (! is) return retval; if (swap) swap_bytes<4> (&name_len); { OCTAVE_LOCAL_BUFFER (char, name, name_len+1); name[name_len] = '\0'; if (! is.read (reinterpret_cast<char *> (name), name_len)) goto data_read_error; retval = name; } is.read (reinterpret_cast<char *> (&doc_len), 4); if (! is) goto data_read_error; if (swap) swap_bytes<4> (&doc_len); { OCTAVE_LOCAL_BUFFER (char, tdoc, doc_len+1); tdoc[doc_len] = '\0'; if (! is.read (reinterpret_cast<char *> (tdoc), doc_len)) goto data_read_error; doc = tdoc; } if (! is.read (reinterpret_cast<char *> (&tmp), 1)) goto data_read_error; global = tmp ? 1 : 0; tmp = 0; if (! is.read (reinterpret_cast<char *> (&tmp), 1)) goto data_read_error; // All cases except 255 kept for backwards compatibility switch (tmp) { case 1: tc = octave_value_typeinfo::lookup_type ("scalar"); break; case 2: tc = octave_value_typeinfo::lookup_type ("matrix"); break; case 3: tc = octave_value_typeinfo::lookup_type ("complex scalar"); break; case 4: tc = octave_value_typeinfo::lookup_type ("complex matrix"); break; case 5: { // FIXMEX // This is cruft, since its for a save type that is old. Maybe // this is taking backward compatability too far!! int32_t len; if (! is.read (reinterpret_cast<char *> (&len), 4)) goto data_read_error; if (swap) swap_bytes<4> (&len); OCTAVE_LOCAL_BUFFER (char, s, len+1); if (! is.read (reinterpret_cast<char *> (s), len)) goto data_read_error; s[len] = '\0'; tc = s; // Early return, since don't want rest of this function return retval; } break; case 6: tc = octave_value_typeinfo::lookup_type ("range"); break; case 7: tc = octave_value_typeinfo::lookup_type ("string"); break; case 255: { // Read the saved variable type int32_t len; if (! is.read (reinterpret_cast<char *> (&len), 4)) goto data_read_error; if (swap) swap_bytes<4> (&len); OCTAVE_LOCAL_BUFFER (char, s, len+1); if (! is.read (s, len)) goto data_read_error; s[len] = '\0'; std::string typ = s; tc = octave_value_typeinfo::lookup_type (typ); } break; default: goto data_read_error; break; } if (!tc.load_binary (is, swap, fmt)) { data_read_error: error ("load: trouble reading binary file `%s'", filename.c_str ()); } return retval; } // Save the data from TC along with the corresponding NAME, help // string DOC, and global flag MARK_AS_GLOBAL on stream OS in the // binary format described above for read_binary_data. bool save_binary_data (std::ostream& os, const octave_value& tc, const std::string& name, const std::string& doc, bool mark_as_global, bool save_as_floats) { int32_t name_len = name.length (); os.write (reinterpret_cast<char *> (&name_len), 4); os << name; int32_t doc_len = doc.length (); os.write (reinterpret_cast<char *> (&doc_len), 4); os << doc; unsigned char tmp; tmp = mark_as_global; os.write (reinterpret_cast<char *> (&tmp), 1); // 255 flags the new binary format tmp = 255; os.write (reinterpret_cast<char *> (&tmp), 1); // Write the string corresponding to the octave_value type std::string typ = tc.type_name (); int32_t len = typ.length (); os.write (reinterpret_cast<char *> (&len), 4); const char *btmp = typ.data (); os.write (btmp, len); // The octave_value of tc is const. Make a copy... octave_value val = tc; // Call specific save function bool success = val.save_binary (os, save_as_floats); return (os && success); }