mirror of
https://github.com/Dushistov/sdcv.git
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116 lines
2.8 KiB
C++
116 lines
2.8 KiB
C++
/*
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* This file part of sdcv - console version of Stardict program
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* http://sdcv.sourceforge.net
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* Copyright (C) 2005 Evgeniy <dushistov@mail.ru>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Library General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <cstdio>
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#include <cstdlib>
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#ifdef WITH_READLINE
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#include <readline/history.h>
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#include <readline/readline.h>
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#endif
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#include <glib.h>
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#include "utils.hpp"
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#include "readline.hpp"
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bool stdio_getline(FILE *in, std::string &str)
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{
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assert(in != nullptr);
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str.clear();
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int ch;
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while ((ch = fgetc(in)) != EOF && ch != '\n')
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str += ch;
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return EOF != ch;
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}
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#ifndef WITH_READLINE
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namespace
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{
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class dummy_readline : public IReadLine
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{
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public:
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bool read(const std::string &banner, std::string &line) override
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{
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printf("%s", banner.c_str());
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return stdio_getline(stdin, line);
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}
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};
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}
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#else
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namespace
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{
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class real_readline : public IReadLine
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{
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public:
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real_readline()
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{
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rl_readline_name = "sdcv";
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using_history();
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const std::string histname = std::string(g_get_home_dir()) + G_DIR_SEPARATOR + ".sdcv_history";
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read_history(histname.c_str());
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}
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~real_readline()
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{
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const std::string histname = std::string(g_get_home_dir()) + G_DIR_SEPARATOR + ".sdcv_history";
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write_history(histname.c_str());
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const gchar *hist_size_str = g_getenv("SDCV_HISTSIZE");
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int hist_size;
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if (!hist_size_str || sscanf(hist_size_str, "%d", &hist_size) < 1)
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hist_size = 2000;
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history_truncate_file(histname.c_str(), hist_size);
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}
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bool read(const std::string &banner, std::string &line) override
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{
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char *phrase = nullptr;
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phrase = readline(banner.c_str());
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if (phrase) {
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line = phrase;
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free(phrase);
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return true;
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}
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return false;
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}
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void add_to_history(const std::string &phrase) override
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{
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add_history(phrase.c_str());
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}
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};
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}
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#endif //WITH_READLINE
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IReadLine *create_readline_object()
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{
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#ifdef WITH_READLINE
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return new real_readline;
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#else
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return new dummy_readline;
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#endif
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}
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