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lnav/src/view_curses.cc

399 lines
13 KiB
C++

/**
* Copyright (c) 2007-2012, Timothy Stack
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Timothy Stack nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @file view_curses.cc
*/
#include "config.h"
#include <string>
#include <algorithm>
#include "lnav_log.hh"
#include "view_curses.hh"
using namespace std;
string_attr_type view_curses::VC_STYLE;
string_attr_type view_curses::VC_GRAPHIC;
const struct itimerval ui_periodic_timer::INTERVAL = {
{ 0, 350 * 1000 },
{ 0, 350 * 1000 }
};
ui_periodic_timer::ui_periodic_timer()
{
signal(SIGALRM, ui_periodic_timer::sigalrm);
if (setitimer(ITIMER_REAL, &INTERVAL, NULL) == -1) {
perror("setitimer");
}
}
ui_periodic_timer &ui_periodic_timer::singleton()
{
static ui_periodic_timer retval;
return retval;
}
void ui_periodic_timer::sigalrm(int sig)
{
singleton().upt_counter += 1;
}
alerter &alerter::singleton() {
static alerter retval;
return retval;
}
void view_curses::mvwattrline(WINDOW *window,
int y,
int x,
attr_line_t &al,
const struct line_range &lr,
view_colors::role_t base_role)
{
int text_attrs, attrs, line_width;
string_attrs_t & sa = al.get_attrs();
string & line = al.get_string();
string_attrs_t::iterator iter;
std::map<size_t, size_t, std::greater<size_t> > tab_list;
int tab_count = 0;
char *expanded_line;
size_t exp_index = 0;
string full_line;
require(lr.lr_end >= 0);
line_width = lr.length();
tab_count = count(line.begin(), line.end(), '\t');
expanded_line = (char *)alloca(line.size() + tab_count * 8 + 1);
for (size_t lpc = 0; lpc < line.size(); lpc++) {
switch (line[lpc]) {
case '\t':
do {
expanded_line[exp_index] = ' ';
exp_index += 1;
} while (exp_index % 8);
tab_list[lpc] = exp_index;
break;
case '\r':
/* exp_index = -1; */
break;
case '\n':
expanded_line[exp_index] = ' ';
exp_index += 1;
break;
default:
expanded_line[exp_index] = line[lpc];
exp_index += 1;
break;
}
}
expanded_line[exp_index] = '\0';
full_line = string(expanded_line);
text_attrs = view_colors::singleton().attrs_for_role(base_role);
attrs = text_attrs;
wmove(window, y, x);
wattron(window, attrs);
if (lr.lr_start < (int)full_line.size()) {
waddnstr(window, &full_line.c_str()[lr.lr_start], line_width);
}
if (lr.lr_end > (int)full_line.size()) {
whline(window, ' ', lr.lr_end - full_line.size());
}
wattroff(window, attrs);
std::vector<line_range> graphic_range;
std::vector<int> graphic_in;
stable_sort(sa.begin(), sa.end());
for (iter = sa.begin(); iter != sa.end(); ++iter) {
struct line_range attr_range = iter->sa_range;
std::map<size_t, size_t>::iterator tab_iter;
require(attr_range.lr_start >= 0);
require(attr_range.lr_end >= -1);
tab_iter = tab_list.lower_bound(attr_range.lr_start);
if (tab_iter != tab_list.end()) {
if (attr_range.lr_start > tab_iter->first) {
attr_range.lr_start += (tab_iter->second - tab_iter->first) - 1;
}
}
if (attr_range.lr_end != -1) {
tab_iter = tab_list.lower_bound(attr_range.lr_end);
if (tab_iter != tab_list.end()) {
if (attr_range.lr_end >= tab_iter->first) {
attr_range.lr_end += (
tab_iter->second - tab_iter->first) - 1;
}
}
}
attr_range.lr_start = max(0, attr_range.lr_start - lr.lr_start);
if (attr_range.lr_end == -1) {
attr_range.lr_end = lr.lr_start + line_width;
}
attr_range.lr_end = min((int)line_width,
attr_range.lr_end - lr.lr_start);
if (attr_range.lr_end > attr_range.lr_start) {
string_attrs_t::iterator range_iter;
int awidth = attr_range.length();
int color_pair = -1;
attrs = 0;
for (range_iter = iter;
range_iter != sa.end() && range_iter->sa_range == iter->sa_range;
++range_iter) {
if (range_iter->sa_type == &VC_STYLE) {
if (color_pair <= 0) {
color_pair = PAIR_NUMBER(range_iter->sa_value.sav_int);
}
attrs |= range_iter->sa_value.sav_int;
}
}
if (attrs != 0) {
int x_pos = x + attr_range.lr_start;
int ch_width = min(awidth, (line_width - attr_range.lr_start));
chtype row_ch[ch_width + 1];
mvwinchnstr(window, y, x_pos, row_ch, ch_width);
for (int lpc = 0; lpc < ch_width; lpc++) {
if (color_pair > 0) {
row_ch[lpc] &= ~A_COLOR;
row_ch[lpc] |= (attrs & ~A_COLOR) | COLOR_PAIR(color_pair);
} else {
row_ch[lpc] |= (attrs);
}
}
mvwaddchnstr(window, y, x_pos, row_ch, ch_width);
}
for (range_iter = iter;
range_iter != sa.end() && range_iter->sa_range == iter->sa_range;
++range_iter) {
if (range_iter->sa_type == &VC_GRAPHIC) {
graphic_range.push_back(attr_range);
graphic_in.push_back(range_iter->sa_value.sav_int | attrs);
}
}
}
}
for (size_t lpc = 0; lpc < graphic_range.size(); lpc++) {
for (int lpc2 = graphic_range[lpc].lr_start;
lpc2 < graphic_range[lpc].lr_end;
lpc2++) {
mvwaddch(window, y, lpc2, graphic_in[lpc]);
}
}
}
view_colors &view_colors::singleton(void)
{
static view_colors s_vc;
return s_vc;
}
view_colors::view_colors()
: vc_next_highlight(0), vc_next_plain_highlight(0)
{
}
void view_colors::init(void)
{
if (has_colors()) {
static int ansi_colors_to_curses[] = {
COLOR_BLACK,
COLOR_RED,
COLOR_GREEN,
COLOR_YELLOW,
COLOR_BLUE,
COLOR_MAGENTA,
COLOR_CYAN,
COLOR_WHITE,
};
start_color();
/* use_default_colors(); */
for (int fg = 0; fg < 8; fg++) {
for (int bg = 0; bg < 8; bg++) {
if (fg == 0 && bg == 0)
continue;
init_pair(ansi_color_pair_index(fg, bg),
ansi_colors_to_curses[fg],
ansi_colors_to_curses[bg]);
}
}
if (COLORS == 256) {
int color_pair_base = VC_ANSI_END;
for (int z = 0; z < 6; z++) {
for (int x = 1; x < 6; x += 2) {
for (int y = 1; y < 6; y += 2) {
int fg = 16 + x + (y * 6) + (z * 6 * 6);
init_pair(color_pair_base,
fg,
COLOR_BLACK);
init_pair(color_pair_base + HL_COLOR_COUNT,
COLOR_BLACK,
fg);
color_pair_base += 1;
}
}
}
}
}
singleton().init_roles();
}
void view_colors::init_roles(void)
{
int lpc;
/* Setup the mappings from roles to actual colors. */
this->vc_role_colors[VCR_TEXT] =
ansi_color_pair(COLOR_WHITE, COLOR_BLACK) | A_DIM;
this->vc_role_colors[VCR_SEARCH] =
this->vc_role_colors[VCR_TEXT] | A_REVERSE;
this->vc_role_colors[VCR_OK] = ansi_color_pair(COLOR_GREEN, COLOR_BLACK) | A_BOLD;
this->vc_role_colors[VCR_ERROR] = ansi_color_pair(COLOR_RED, COLOR_BLACK) | A_BOLD;
this->vc_role_colors[VCR_WARNING] = ansi_color_pair(COLOR_YELLOW, COLOR_BLACK) | A_BOLD;
this->vc_role_colors[VCR_ALT_ROW] = ansi_color_pair(COLOR_WHITE, COLOR_BLACK) | A_BOLD;
this->vc_role_colors[VCR_ADJUSTED_TIME] = ansi_color_pair(COLOR_MAGENTA, COLOR_BLACK);
this->vc_role_colors[VCR_STATUS] =
ansi_color_pair(COLOR_BLACK, COLOR_WHITE);
this->vc_role_colors[VCR_WARN_STATUS] =
ansi_color_pair(COLOR_YELLOW, COLOR_WHITE) | A_BOLD;
this->vc_role_colors[VCR_ALERT_STATUS] =
ansi_color_pair(COLOR_RED, COLOR_WHITE);
this->vc_role_colors[VCR_ACTIVE_STATUS] =
ansi_color_pair(COLOR_GREEN, COLOR_WHITE);
this->vc_role_colors[VCR_ACTIVE_STATUS2] =
ansi_color_pair(COLOR_GREEN, COLOR_WHITE) | A_BOLD;
this->vc_role_colors[VCR_BOLD_STATUS] =
ansi_color_pair(COLOR_BLACK, COLOR_WHITE) | A_BOLD;
this->vc_role_colors[VCR_KEYWORD] = ansi_color_pair(COLOR_BLUE, COLOR_BLACK);
this->vc_role_colors[VCR_STRING] = ansi_color_pair(COLOR_GREEN, COLOR_BLACK) | A_BOLD;
this->vc_role_colors[VCR_COMMENT] = ansi_color_pair(COLOR_GREEN, COLOR_BLACK);
this->vc_role_colors[VCR_VARIABLE] = ansi_color_pair(COLOR_CYAN, COLOR_BLACK);
this->vc_role_colors[VCR_DIFF_DELETE] = ansi_color_pair(COLOR_RED, COLOR_BLACK);
this->vc_role_colors[VCR_DIFF_ADD] = ansi_color_pair(COLOR_GREEN, COLOR_BLACK);
this->vc_role_colors[VCR_DIFF_SECTION] = ansi_color_pair(COLOR_MAGENTA, COLOR_BLACK);
for (lpc = 0; lpc < VCR_HIGHLIGHT_START; lpc++) {
this->vc_role_reverse_colors[lpc] =
this->vc_role_colors[lpc] | A_REVERSE;
}
static int basic_hl_pairs[HL_BASIC_COLOR_COUNT] = {
ansi_color_pair(COLOR_BLUE, COLOR_BLACK),
ansi_color_pair(COLOR_CYAN, COLOR_BLACK),
ansi_color_pair(COLOR_GREEN, COLOR_BLACK),
ansi_color_pair(COLOR_MAGENTA, COLOR_BLACK),
};
static int basic_rev_hl_pairs[HL_BASIC_COLOR_COUNT] = {
ansi_color_pair(COLOR_BLUE, COLOR_WHITE),
ansi_color_pair(COLOR_CYAN, COLOR_BLACK),
ansi_color_pair(COLOR_GREEN, COLOR_WHITE),
ansi_color_pair(COLOR_MAGENTA, COLOR_WHITE),
};
for (lpc = 0; lpc < HL_COLOR_COUNT / 2; lpc++) {
this->vc_role_colors[VCR_HIGHLIGHT_START + (lpc * 2)] = basic_hl_pairs[
lpc % HL_BASIC_COLOR_COUNT];
this->vc_role_colors[VCR_HIGHLIGHT_START + (lpc * 2) + 1] = basic_hl_pairs[
lpc % HL_BASIC_COLOR_COUNT] | A_BOLD;
this->vc_role_reverse_colors[VCR_HIGHLIGHT_START + (lpc * 2)] = basic_rev_hl_pairs[
lpc % HL_BASIC_COLOR_COUNT] | A_REVERSE;
this->vc_role_reverse_colors[VCR_HIGHLIGHT_START + (lpc * 2) + 1] = basic_rev_hl_pairs[
lpc % HL_BASIC_COLOR_COUNT] | A_BOLD | A_REVERSE;
}
if (COLORS >= 256) {
int color_pair_base = VC_ANSI_END;
/*
* Prime the highlight vector. The first HL_COLOR_COUNT color
* pairs are assumed to be the highlight colors.
*/
for (lpc = VCR_HIGHLIGHT_START + HL_BASIC_COLOR_COUNT * 2;
lpc < VCR__MAX;
lpc++) {
this->vc_role_colors[lpc] = COLOR_PAIR(color_pair_base);
this->vc_role_reverse_colors[lpc] =
COLOR_PAIR(color_pair_base) | A_REVERSE;
color_pair_base += 1;
}
}
}
view_colors::role_t view_colors::next_highlight()
{
role_t retval = (role_t)(VCR_HIGHLIGHT_START + this->vc_next_highlight);
this->vc_next_highlight = (this->vc_next_highlight + 1) % HL_COLOR_COUNT;
return retval;
}
view_colors::role_t view_colors::next_plain_highlight()
{
role_t retval = (role_t)(VCR_HIGHLIGHT_START + this->vc_next_plain_highlight);
this->vc_next_plain_highlight = (this->vc_next_plain_highlight + 2) %
(HL_COLOR_COUNT);
return retval;
}