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651 lines
23 KiB
C++
651 lines
23 KiB
C++
/**
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* Copyright (c) 2014, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Timothy Stack nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @file readline_highlighters.cc
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*/
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#include "readline_highlighters.hh"
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#include "base/attr_line.builder.hh"
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#include "base/string_util.hh"
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#include "config.h"
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#include "pcrepp/pcrepp.hh"
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#include "shlex.hh"
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#include "sql_help.hh"
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#include "sql_util.hh"
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#include "view_curses.hh"
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static void readline_sqlite_highlighter_int(attr_line_t& al,
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int x,
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line_range sub);
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static void readline_shlex_highlighter_int(attr_line_t& al,
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int x,
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line_range sub);
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static bool
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check_re_prev(const std::string& line, int x)
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{
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bool retval = false;
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if ((x > 0 && line[x - 1] != ')' && line[x - 1] != ']' && line[x - 1] != '*'
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&& line[x - 1] != '?' && line[x - 1] != '+')
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&& (x < 2 || line[x - 2] != '\\'))
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{
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retval = true;
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}
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return retval;
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}
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static bool
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is_bracket(const std::string& str, int index, bool is_lit)
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{
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if (is_lit && str[index - 1] == '\\') {
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return true;
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}
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if (!is_lit && str[index - 1] != '\\') {
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return true;
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}
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return false;
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}
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static void
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find_matching_bracket(
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attr_line_t& al, int x, line_range sub, char left, char right)
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{
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bool is_lit = (left == 'Q');
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attr_line_builder alb(al);
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const auto& line = al.get_string();
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int depth = 0;
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if (x < sub.lr_start || x > sub.lr_end) {
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return;
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}
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if (line[x] == right && is_bracket(line, x, is_lit)) {
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for (int lpc = x - 1; lpc >= sub.lr_start; lpc--) {
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if (line[lpc] == right && is_bracket(line, lpc, is_lit)) {
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depth += 1;
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} else if (line[lpc] == left && is_bracket(line, lpc, is_lit)) {
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if (depth == 0) {
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alb.overlay_attr_for_char(
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lpc, VC_STYLE.value(A_BOLD | A_REVERSE));
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alb.overlay_attr_for_char(lpc,
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VC_ROLE.value(role_t::VCR_OK));
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break;
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}
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depth -= 1;
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}
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}
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}
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if (line[x] == left && is_bracket(line, x, is_lit)) {
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for (size_t lpc = x + 1; lpc < sub.lr_end; lpc++) {
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if (line[lpc] == left && is_bracket(line, lpc, is_lit)) {
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depth += 1;
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} else if (line[lpc] == right && is_bracket(line, lpc, is_lit)) {
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if (depth == 0) {
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alb.overlay_attr_for_char(
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lpc, VC_STYLE.value(A_BOLD | A_REVERSE));
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alb.overlay_attr_for_char(lpc,
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VC_ROLE.value(role_t::VCR_OK));
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break;
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}
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depth -= 1;
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}
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}
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}
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nonstd::optional<int> first_left;
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depth = 0;
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for (size_t lpc = sub.lr_start; lpc < sub.lr_end; lpc++) {
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if (line[lpc] == left && is_bracket(line, lpc, is_lit)) {
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depth += 1;
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if (!first_left) {
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first_left = lpc;
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}
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} else if (line[lpc] == right && is_bracket(line, lpc, is_lit)) {
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if (depth > 0) {
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depth -= 1;
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} else {
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auto lr = line_range(is_lit ? lpc - 1 : lpc, lpc + 1);
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alb.overlay_attr(lr, VC_STYLE.value(A_BOLD | A_REVERSE));
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alb.overlay_attr(lr, VC_ROLE.value(role_t::VCR_ERROR));
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}
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}
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}
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if (depth > 0) {
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auto lr
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= line_range(is_lit ? first_left.value() - 1 : first_left.value(),
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first_left.value() + 1);
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alb.overlay_attr(lr, VC_STYLE.value(A_BOLD | A_REVERSE));
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alb.overlay_attr(lr, VC_ROLE.value(role_t::VCR_ERROR));
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}
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}
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static char
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safe_read(const std::string& str, std::string::size_type index)
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{
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if (index < str.length()) {
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return str.at(index);
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}
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return 0;
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}
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static void
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readline_regex_highlighter_int(attr_line_t& al, int x, line_range sub)
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{
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static const char* brackets[] = {
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"[]",
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"{}",
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"()",
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"QE",
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nullptr,
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};
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const auto& line = al.get_string();
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attr_line_builder alb(al);
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bool backslash_is_quoted = false;
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for (size_t lpc = sub.lr_start; lpc < sub.lr_end; lpc++) {
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if (line[lpc - 1] != '\\') {
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switch (line[lpc]) {
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case '^':
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case '$':
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case '*':
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case '+':
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case '|':
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case '.':
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alb.overlay_attr_for_char(
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lpc, VC_ROLE.value(role_t::VCR_RE_SPECIAL));
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if ((line[lpc] == '*' || line[lpc] == '+')
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&& check_re_prev(line, lpc)) {
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alb.overlay_attr_for_char(
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lpc - 1, VC_ROLE.value(role_t::VCR_RE_REPEAT));
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}
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break;
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case '?': {
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struct line_range lr(lpc, lpc + 1);
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if (lpc == sub.lr_start || (lpc - sub.lr_start) == 0) {
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alb.overlay_attr_for_char(
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lpc, VC_STYLE.value(A_BOLD | A_REVERSE));
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alb.overlay_attr_for_char(
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lpc, VC_ROLE.value(role_t::VCR_ERROR));
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} else if (line[lpc - 1] == '(') {
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switch (line[lpc + 1]) {
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case ':':
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case '!':
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case '>':
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case '<':
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case '#':
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lr.lr_end += 1;
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break;
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}
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alb.overlay_attr(lr, VC_ROLE.value(role_t::VCR_OK));
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} else {
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alb.overlay_attr(lr,
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VC_ROLE.value(role_t::VCR_RE_SPECIAL));
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if (check_re_prev(line, lpc)) {
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alb.overlay_attr_for_char(
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lpc - 1, VC_ROLE.value(role_t::VCR_RE_REPEAT));
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}
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}
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break;
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}
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case '(':
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case ')':
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case '{':
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case '}':
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case '[':
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case ']':
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alb.overlay_attr_for_char(lpc,
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VC_ROLE.value(role_t::VCR_OK));
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break;
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}
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}
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if (line[lpc - 1] == '\\') {
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if (backslash_is_quoted) {
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backslash_is_quoted = false;
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continue;
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}
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switch (line[lpc]) {
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case '\\':
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backslash_is_quoted = true;
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alb.overlay_attr(line_range(lpc - 1, lpc + 1),
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VC_ROLE.value(role_t::VCR_RE_SPECIAL));
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break;
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case 'd':
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case 'D':
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case 'h':
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case 'H':
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case 'N':
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case 'R':
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case 's':
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case 'S':
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case 'v':
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case 'V':
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case 'w':
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case 'W':
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case 'X':
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case 'A':
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case 'b':
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case 'B':
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case 'G':
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case 'Z':
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case 'z':
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alb.overlay_attr(line_range(lpc - 1, lpc + 1),
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VC_ROLE.value(role_t::VCR_SYMBOL));
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break;
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case ' ':
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alb.overlay_attr(line_range(lpc - 1, lpc + 1),
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VC_STYLE.value(A_BOLD | A_REVERSE));
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alb.overlay_attr(line_range(lpc - 1, lpc + 1),
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VC_ROLE.value(role_t::VCR_ERROR));
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break;
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case '0':
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case 'x':
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if (safe_read(line, lpc + 1) == '{') {
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alb.overlay_attr(line_range(lpc - 1, lpc + 1),
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VC_ROLE.value(role_t::VCR_RE_SPECIAL));
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} else if (isdigit(safe_read(line, lpc + 1))
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&& isdigit(safe_read(line, lpc + 2)))
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{
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alb.overlay_attr(line_range(lpc - 1, lpc + 3),
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VC_ROLE.value(role_t::VCR_RE_SPECIAL));
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} else {
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alb.overlay_attr(line_range(lpc - 1, lpc + 1),
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VC_STYLE.value(A_BOLD | A_REVERSE));
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alb.overlay_attr(line_range(lpc - 1, lpc + 1),
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VC_ROLE.value(role_t::VCR_ERROR));
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}
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break;
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case 'Q':
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case 'E':
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alb.overlay_attr(line_range(lpc - 1, lpc + 1),
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VC_ROLE.value(role_t::VCR_OK));
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break;
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default:
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if (isdigit(line[lpc])) {
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alb.overlay_attr(line_range(lpc - 1, lpc + 1),
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VC_ROLE.value(role_t::VCR_RE_SPECIAL));
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}
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break;
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}
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}
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}
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for (int lpc = 0; brackets[lpc]; lpc++) {
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find_matching_bracket(al, x, sub, brackets[lpc][0], brackets[lpc][1]);
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}
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}
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void
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readline_regex_highlighter(attr_line_t& al, int x)
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{
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readline_regex_highlighter_int(
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al, x, line_range{1, (int) al.get_string().size()});
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}
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void
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readline_command_highlighter_int(attr_line_t& al, int x, line_range sub)
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{
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static const pcrepp RE_PREFIXES(
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R"(^:(filter-in|filter-out|delete-filter|enable-filter|disable-filter|highlight|clear-highlight|create-search-table\s+[^\s]+\s+))");
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static const pcrepp SH_PREFIXES(
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"^:(eval|open|append-to|write-to|write-csv-to|write-json-to)");
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static const pcrepp SQL_PREFIXES("^:(filter-expr|mark-expr)");
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static const pcrepp IDENT_PREFIXES("^:(tag|untag|delete-tags)");
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static const pcrepp COLOR_PREFIXES("^:(config)");
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static const pcrepp COLOR_RE("(#(?:[a-fA-F0-9]{6}|[a-fA-F0-9]{3}))");
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attr_line_builder alb(al);
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const auto& line = al.get_string();
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pcre_context_static<30> pc;
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pcre_input pi(&line[sub.lr_start], 0, sub.length());
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size_t ws_index;
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ws_index = line.find(' ', sub.lr_start);
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auto command = line.substr(sub.lr_start, ws_index);
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if (ws_index != std::string::npos) {
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alb.overlay_attr(line_range(sub.lr_start + 1, ws_index),
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VC_ROLE.value(role_t::VCR_KEYWORD));
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}
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if (RE_PREFIXES.match(pc, pi)) {
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readline_regex_highlighter_int(
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al, x, line_range{(int) ws_index, sub.lr_end});
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}
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pi.reset(&line[sub.lr_start], 0, sub.length());
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if (SH_PREFIXES.match(pc, pi)) {
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readline_shlex_highlighter_int(
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al, x, line_range{(int) ws_index, sub.lr_end});
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}
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pi.reset(&line[sub.lr_start], 0, sub.length());
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if (SQL_PREFIXES.match(pc, pi)) {
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readline_sqlite_highlighter_int(
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al, x, line_range{(int) ws_index, sub.lr_end});
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}
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pi.reset(&line[sub.lr_start], 0, sub.length());
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if (COLOR_PREFIXES.match(pc, pi)) {
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pi.reset(&line[sub.lr_start], 0, sub.length());
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if (COLOR_RE.match(pc, pi)) {
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pcre_context::capture_t* cap = pc[0];
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auto hash_color = pi.get_substr(cap);
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styling::color_unit::from_str(hash_color)
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.then([&](const auto& rgb_fg) {
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alb.template overlay_attr(
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line_range{sub.lr_start + cap->c_begin,
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sub.lr_start + cap->c_begin + 1},
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VC_ROLE.value(role_t::VCR_COLOR_HINT));
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});
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}
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}
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pi.reset(&line[sub.lr_start], 0, sub.length());
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if (IDENT_PREFIXES.match(pc, pi) && ws_index != std::string::npos) {
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size_t start = ws_index, last;
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do {
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for (; start < sub.length() && isspace(line[start]); start++)
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;
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for (last = start; last < sub.length() && !isspace(line[last]);
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last++)
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;
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struct line_range lr {
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(int) start, (int) last
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};
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if (lr.length() > 0 && !lr.contains(x) && !lr.contains(x - 1)) {
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std::string value(lr.substr(line), lr.sublen(line));
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if ((command == ":tag" || command == ":untag"
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|| command == ":delete-tags")
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&& !startswith(value, "#"))
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{
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value = "#" + value;
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}
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alb.overlay_attr(lr, VC_ROLE.value(role_t::VCR_IDENTIFIER));
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}
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start = last;
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} while (start < sub.length());
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}
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}
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void
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readline_command_highlighter(attr_line_t& al, int x)
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{
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readline_command_highlighter_int(
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al, x, line_range{0, (int) al.get_string().length()});
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}
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static void
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readline_sqlite_highlighter_int(attr_line_t& al, int x, line_range sub)
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{
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static const char* brackets[] = {
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"[]",
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"()",
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nullptr,
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};
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attr_line_builder alb(al);
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const auto& line = al.get_string();
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auto anno_sql = al.subline(sub.lr_start, sub.length());
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anno_sql.get_attrs().clear();
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annotate_sql_statement(anno_sql);
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for (const auto& attr : anno_sql.al_attrs) {
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line_range lr{
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sub.lr_start + attr.sa_range.lr_start,
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sub.lr_start + attr.sa_range.lr_end,
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};
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if (attr.sa_type == &SQL_COMMAND_ATTR
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|| attr.sa_type == &SQL_KEYWORD_ATTR) {
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alb.overlay_attr(lr, VC_ROLE.value(role_t::VCR_KEYWORD));
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} else if (attr.sa_type == &SQL_IDENTIFIER_ATTR) {
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if (!attr.sa_range.contains(x) && attr.sa_range.lr_end != x) {
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alb.overlay_attr(lr, VC_ROLE.value(role_t::VCR_IDENTIFIER));
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}
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} else if (attr.sa_type == &SQL_FUNCTION_ATTR) {
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alb.overlay_attr(
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line_range{lr.lr_start, (int) line.find('(', lr.lr_start)},
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VC_ROLE.value(role_t::VCR_SYMBOL));
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} else if (attr.sa_type == &SQL_STRING_ATTR) {
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if (lr.length() > 1 && al.al_string[lr.lr_end - 1] == '\'') {
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alb.overlay_attr(lr, VC_ROLE.value(role_t::VCR_STRING));
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} else {
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alb.overlay_attr_for_char(lr.lr_start,
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VC_STYLE.value(A_REVERSE));
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alb.overlay_attr_for_char(lr.lr_start,
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VC_ROLE.value(role_t::VCR_ERROR));
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}
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} else if (attr.sa_type == &SQL_OPERATOR_ATTR) {
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alb.overlay_attr(lr, VC_ROLE.value(role_t::VCR_SYMBOL));
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} else if (attr.sa_type == &SQL_COMMENT_ATTR) {
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alb.overlay_attr(lr, VC_ROLE.value(role_t::VCR_COMMENT));
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}
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}
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for (int lpc = 0; brackets[lpc]; lpc++) {
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find_matching_bracket(al, x, sub, brackets[lpc][0], brackets[lpc][1]);
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}
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}
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void
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readline_sqlite_highlighter(attr_line_t& al, int x)
|
|
{
|
|
readline_sqlite_highlighter_int(
|
|
al, x, line_range{0, (int) al.get_string().length()});
|
|
}
|
|
|
|
static void
|
|
readline_shlex_highlighter_int(attr_line_t& al, int x, line_range sub)
|
|
{
|
|
attr_line_builder alb(al);
|
|
const auto& str = al.get_string();
|
|
pcre_context::capture_t cap;
|
|
shlex_token_t token;
|
|
nonstd::optional<int> quote_start;
|
|
shlex lexer(string_fragment{al.al_string.data(), sub.lr_start, sub.lr_end});
|
|
|
|
while (lexer.tokenize(cap, token)) {
|
|
switch (token) {
|
|
case shlex_token_t::ST_ERROR:
|
|
alb.overlay_attr(line_range(sub.lr_start + cap.c_begin,
|
|
sub.lr_start + cap.c_end),
|
|
VC_STYLE.value(A_REVERSE));
|
|
alb.overlay_attr(line_range(sub.lr_start + cap.c_begin,
|
|
sub.lr_start + cap.c_end),
|
|
VC_ROLE.value(role_t::VCR_ERROR));
|
|
break;
|
|
case shlex_token_t::ST_TILDE:
|
|
case shlex_token_t::ST_ESCAPE:
|
|
alb.overlay_attr(line_range(sub.lr_start + cap.c_begin,
|
|
sub.lr_start + cap.c_end),
|
|
VC_ROLE.value(role_t::VCR_SYMBOL));
|
|
break;
|
|
case shlex_token_t::ST_DOUBLE_QUOTE_START:
|
|
case shlex_token_t::ST_SINGLE_QUOTE_START:
|
|
quote_start = sub.lr_start + cap.c_begin;
|
|
break;
|
|
case shlex_token_t::ST_DOUBLE_QUOTE_END:
|
|
case shlex_token_t::ST_SINGLE_QUOTE_END:
|
|
alb.overlay_attr(
|
|
line_range(quote_start.value(), sub.lr_start + cap.c_end),
|
|
VC_ROLE.value(role_t::VCR_STRING));
|
|
quote_start = nonstd::nullopt;
|
|
break;
|
|
case shlex_token_t::ST_VARIABLE_REF:
|
|
case shlex_token_t::ST_QUOTED_VARIABLE_REF: {
|
|
int extra = token == shlex_token_t::ST_VARIABLE_REF ? 0 : 1;
|
|
auto ident = str.substr(sub.lr_start + cap.c_begin + 1 + extra,
|
|
cap.length() - 1 - extra * 2);
|
|
alb.overlay_attr(
|
|
line_range(sub.lr_start + cap.c_begin,
|
|
sub.lr_start + cap.c_begin + 1 + extra),
|
|
VC_ROLE.value(role_t::VCR_SYMBOL));
|
|
alb.overlay_attr(
|
|
line_range(sub.lr_start + cap.c_begin + 1 + extra,
|
|
sub.lr_start + cap.c_end - extra),
|
|
VC_ROLE.value(x == sub.lr_start + cap.c_end
|
|
|| cap.contains(x)
|
|
? role_t::VCR_SYMBOL
|
|
: role_t::VCR_IDENTIFIER));
|
|
if (extra) {
|
|
alb.overlay_attr_for_char(
|
|
sub.lr_start + cap.c_end - 1,
|
|
VC_ROLE.value(role_t::VCR_SYMBOL));
|
|
}
|
|
break;
|
|
}
|
|
case shlex_token_t::ST_WHITESPACE:
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (quote_start) {
|
|
alb.overlay_attr_for_char(quote_start.value(),
|
|
VC_ROLE.value(role_t::VCR_ERROR));
|
|
}
|
|
}
|
|
|
|
void
|
|
readline_shlex_highlighter(attr_line_t& al, int x)
|
|
{
|
|
readline_shlex_highlighter_int(
|
|
al, x, line_range{0, (int) al.al_string.length()});
|
|
}
|
|
|
|
static void
|
|
readline_lnav_highlighter_int(attr_line_t& al, int x, line_range sub)
|
|
{
|
|
switch (al.al_string[sub.lr_start]) {
|
|
case ':':
|
|
readline_command_highlighter_int(al, x, sub);
|
|
break;
|
|
case ';':
|
|
readline_sqlite_highlighter_int(al,
|
|
x,
|
|
line_range{
|
|
sub.lr_start + 1,
|
|
sub.lr_end,
|
|
});
|
|
break;
|
|
case '|':
|
|
break;
|
|
case '/':
|
|
readline_regex_highlighter_int(al,
|
|
x,
|
|
line_range{
|
|
sub.lr_start + 1,
|
|
sub.lr_end,
|
|
});
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
readline_lnav_highlighter(attr_line_t& al, int x)
|
|
{
|
|
static const pcrepp COMMENT_RE{R"(^\s*#)"};
|
|
|
|
attr_line_builder alb(al);
|
|
size_t start = 0, lf_pos;
|
|
nonstd::optional<size_t> section_start;
|
|
|
|
while ((lf_pos = al.get_string().find('\n', start)) != std::string::npos) {
|
|
line_range line{(int) start, (int) lf_pos};
|
|
|
|
if (line.empty()) {
|
|
start = lf_pos + 1;
|
|
continue;
|
|
}
|
|
|
|
pcre_input pi(&al.al_string[line.lr_start], 0, line.length());
|
|
pcre_context_static<30> pc;
|
|
|
|
if (COMMENT_RE.match(pc, pi)) {
|
|
if (section_start) {
|
|
readline_lnav_highlighter_int(al,
|
|
x,
|
|
line_range{
|
|
(int) section_start.value(),
|
|
line.lr_start,
|
|
});
|
|
section_start = nonstd::nullopt;
|
|
}
|
|
const auto* cap = pc.all();
|
|
alb.overlay_attr(
|
|
line_range{line.lr_start + cap->c_begin, (int) lf_pos},
|
|
VC_ROLE.value(role_t::VCR_COMMENT));
|
|
} else {
|
|
switch (al.al_string[line.lr_start]) {
|
|
case ':':
|
|
case ';':
|
|
case '|':
|
|
case '/':
|
|
if (section_start) {
|
|
readline_lnav_highlighter_int(
|
|
al,
|
|
x,
|
|
line_range{
|
|
(int) section_start.value(),
|
|
line.lr_start,
|
|
});
|
|
}
|
|
|
|
section_start = line.lr_start;
|
|
break;
|
|
}
|
|
}
|
|
|
|
start = lf_pos;
|
|
}
|
|
|
|
if (section_start) {
|
|
readline_lnav_highlighter_int(al,
|
|
x,
|
|
line_range{
|
|
(int) section_start.value(),
|
|
(int) al.al_string.length(),
|
|
});
|
|
}
|
|
}
|