Mercurial > octave
view liboctave/util/file-info.cc @ 27919:1891570abac8
update Octave Project Developers copyright for the new year
In files that have the "Octave Project Developers" copyright notice,
update for 2020.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Mon, 06 Jan 2020 22:29:51 -0500 |
parents | b442ec6dda5c |
children | bd51beb6205e |
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/* Copyright (C) 2001-2020 The Octave Project Developers See the file COPYRIGHT.md in the top-level directory of this distribution or <https://octave.org/COPYRIGHT.html/>. 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 <https://www.gnu.org/licenses/>. */ #if defined (HAVE_CONFIG_H) # include "config.h" #endif #include <deque> #include <fstream> #include "file-info.h" #include "file-stat.h" #include "lo-error.h" #include "lo-sysdep.h" namespace octave { std::string file_info::get_line (size_t line) const { std::string retval; if (line == 0) return retval; if (line < m_offsets.size ()) { size_t bol = m_offsets[line-1]; size_t eol = m_offsets[line]; while (eol > 0 && eol > bol && (m_file_buf[eol-1] == '\n' || m_file_buf[eol-1] == '\r')) eol--; retval = m_file_buf.substr (bol, eol - bol); } return retval; } std::deque<std::string> file_info::get_lines (size_t line, size_t num_lines) const { std::deque<std::string> retval; for (size_t i = line; i < line+num_lines; i++) retval.push_back (get_line (i)); return retval; } // Read entire file called fname and return the contents as a string std::string file_info::snarf_file (const std::string& fname) { std::string retval; sys::file_stat fs (fname); if (! fs) (*current_liboctave_error_handler) ("no such file, '%s'", fname.c_str ()); size_t sz = fs.size (); std::string ascii_fname = sys::get_ASCII_filename (fname); std::ifstream file (ascii_fname.c_str (), std::ios::in | std::ios::binary); if (file) { std::string buf (sz+1, 0); file.read (&buf[0], sz+1); if (! file.eof ()) (*current_liboctave_error_handler) ("error reading file %s", fname.c_str ()); // Expected to read the entire file. retval = buf; } return retval; } std::vector<size_t> file_info::get_line_offsets (const std::string& buf) { std::deque<size_t> tmp_offsets; tmp_offsets.push_back (0); size_t len = buf.length (); for (size_t i = 0; i < len; i++) { char c = buf[i]; if (c == '\r' && ++i < len) { c = buf[i]; if (c == '\n') tmp_offsets.push_back (i+1); else tmp_offsets.push_back (i); } else if (c == '\n') tmp_offsets.push_back (i+1); } tmp_offsets.push_back (len-1); size_t n = tmp_offsets.size (); std::vector<size_t> retval (n); size_t i = 0; for (auto& elt : tmp_offsets) retval[i++] = elt; return retval; } }