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/*
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* lftp - file transfer program
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*
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* Copyright (c) 1996-2012 by Alexander V. Lukyanov (lav@yars.free.net)
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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 3 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 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, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <mbswidth.h>
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#include "SMTask.h"
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#include "ColumnOutput.h"
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#include "ResMgr.h"
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#include "misc.h"
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#include "DirColors.h"
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ResDecl res_color ("color:use-color", "auto",ResMgr::TriBoolValidate,ResMgr::NoClosure);
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#define lst_cnt lst.count()
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void ColumnOutput::add(const char *name, const char *color)
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{
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lst[lst_cnt-1]->append(name, color);
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}
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void ColumnOutput::addf(const char *fmt, const char *color, ...)
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{
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va_list v;
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va_start(v, color);
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add(xstring::vformat(fmt,v), color);
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va_end(v);
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}
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void ColumnOutput::append()
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{
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lst.append(new datum);
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}
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/* The minimum width of a colum is 3: 1 character for the name and 2
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* for the separating white space. */
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#define MIN_COLUMN_WIDTH 3
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/* Assuming cursor is at position FROM, indent up to position TO.
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* Use a TAB character instead of two or more spaces whenever possible. */
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static void
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indent (int from, int to, const JobRef<OutputJob>& o)
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{
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// TODO
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#define tabsize 8
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while (from < to) {
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if (tabsize > 0 && to / tabsize > (from + 1) / tabsize) {
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o->Put("\t");
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from += tabsize - from % tabsize;
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} else {
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o->Put(" ");
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from++;
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}
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}
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}
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void ColumnOutput::get_print_info(unsigned width, xarray<int> &col_arr, xarray<int> &ws_arr, int &cols) const
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{
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/* Maximum number of columns ever possible for this display. */
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int max_idx = width / MIN_COLUMN_WIDTH;
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if (max_idx == 0) max_idx = 1;
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/* Normally the maximum number of columns is determined by the
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* screen width. But if few files are available this might limit it
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* as well. */
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int max_cols = max_idx > lst_cnt ? lst_cnt : max_idx;
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if(max_cols < 1) max_cols = 1;
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/* Compute the maximum number of possible columns. */
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for (cols = max_cols; cols >= 1; cols--) {
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col_arr.truncate();
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ws_arr.truncate();
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for (int j = 0; j < max_idx; ++j) {
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col_arr.append(MIN_COLUMN_WIDTH);
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ws_arr.append(99999999);
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}
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int filesno;
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/* Find the amount of whitespace shared by every entry in the column. */
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for (filesno = 0; filesno < lst_cnt; ++filesno) {
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int idx = filesno / ((lst_cnt + cols - 1) / cols);
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int ws = lst[filesno]->whitespace();
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if(ws < ws_arr[idx]) ws_arr[idx] = ws;
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}
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/* Strip as much whitespace off the left as possible, but strip
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* the same amount from each entry (per column) to keep each
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* column aligned with itself. */
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unsigned line_len = cols * MIN_COLUMN_WIDTH;
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for (filesno = 0; filesno < lst_cnt; ++filesno) {
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int idx = filesno / ((lst_cnt + cols - 1) / cols);
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int name_length = lst[filesno]->width();
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/* all but the last column get 2 spaces of padding */
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int real_length = name_length + (idx == cols-1 ? 0 : 2) - ws_arr[idx];
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if (real_length <= col_arr[idx]) continue;
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line_len += (real_length - col_arr[idx]);
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col_arr[idx] = real_length;
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}
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if(line_len < width)
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break; /* found it */
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}
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if(cols == 0)
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cols = 1;
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}
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void ColumnOutput::print(const JobRef<OutputJob>& o, unsigned width, bool color) const
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{
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if(!lst_cnt) return; /* we have nothing to display */
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int cols;
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xarray<int> col_arr;
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xarray<int> ws_arr;
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get_print_info(width, col_arr, ws_arr, cols);
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/* Calculate the number of rows that will be in each column except possibly
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* for a short column on the right. */
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int rows = lst_cnt / cols + (lst_cnt % cols != 0);
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DirColors *dc=DirColors::GetInstance();
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const char *color_pref =dc->Lookup(".lc");
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const char *color_suf =dc->Lookup(".rc");
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const char *color_reset=dc->Lookup(".ec");
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for (int row = 0; row < rows; row++) {
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int col = 0;
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int filesno = row;
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int pos = 0; /* Current character column. */
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/* Print the next row. */
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while (1) {
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lst[filesno]->print(o, color, ws_arr[col], color_pref, color_suf, color_reset);
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int name_length = lst[filesno]->width() - ws_arr[col];
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int max_name_length = col_arr[col++];
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filesno += rows;
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if (filesno >= lst_cnt)
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break;
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indent (pos + name_length, pos + max_name_length, o);
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pos += max_name_length;
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}
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o->Put("\n");
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}
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}
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void datum::append(const char *name, const char *color)
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{
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names.Append(name);
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colors.Append(color);
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if(names.Count() == 1) {
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ws = 0;
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for(int c = 0; name[c]; c++) {
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if(name[c] != ' ') break;
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ws++;
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}
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}
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curwidth += mbswidth(name, 0);
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}
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void datum::print(const JobRef<OutputJob>& o, bool color, int skip,
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const char *color_pref, const char *color_suf, const char *color_reset) const
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{
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const char *cur_color = 0;
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for(int i = 0; i < names.Count(); i++) {
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int len = strlen(names[i]);
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if(len < skip) {
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skip -= len;
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continue;
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}
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if(color) {
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if(colors[i][0]) {
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/* if it's the same color, don't bother */
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if(!cur_color || !strcmp(cur_color, colors[i])) {
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o->Put(color_pref);
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o->Put(colors[i]);
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o->Put(color_suf);
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cur_color = colors[i];
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}
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} else {
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/* reset color, if we have one */
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if(cur_color) {
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o->Put(color_reset);
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cur_color = 0;
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}
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}
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}
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o->Put(names[i]+skip);
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skip = 0;
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}
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if(cur_color)
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o->Put(color_reset);
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}
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