mirror of https://github.com/tstack/lnav.git
605 lines
19 KiB
C++
605 lines
19 KiB
C++
/**
|
|
* Copyright (c) 2014, 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 readline_highlighters.cc
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include "pcrepp.hh"
|
|
#include "sql_util.hh"
|
|
#include "shlex.hh"
|
|
#include "lnav_util.hh"
|
|
|
|
#include "readline_highlighters.hh"
|
|
|
|
using namespace std;
|
|
|
|
static bool check_re_prev(const string &line, int x)
|
|
{
|
|
bool retval = false;
|
|
|
|
if ((x > 0 &&
|
|
line[x - 1] != ')' &&
|
|
line[x - 1] != ']' &&
|
|
line[x - 1] != '*' &&
|
|
line[x - 1] != '?' &&
|
|
line[x - 1] != '+') &&
|
|
(x < 2 || line[x - 2] != '\\')) {
|
|
retval = true;
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
static bool is_bracket(const string &str, int index, bool is_lit)
|
|
{
|
|
if (is_lit && str[index - 1] == '\\') {
|
|
return true;
|
|
}
|
|
if (!is_lit && str[index - 1] != '\\') {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static void find_matching_bracket(attr_line_t &al, int x, char left, char right)
|
|
{
|
|
view_colors &vc = view_colors::singleton();
|
|
int matching_bracket_attrs =
|
|
A_BOLD|A_REVERSE|vc.attrs_for_role(view_colors::VCR_OK);
|
|
int missing_bracket_attrs =
|
|
A_BOLD|A_REVERSE|vc.attrs_for_role(view_colors::VCR_ERROR);
|
|
bool is_lit = (left == 'Q');
|
|
const string &line = al.get_string();
|
|
int depth = 0;
|
|
|
|
if (x < 0 || x > line.length()) {
|
|
return;
|
|
}
|
|
|
|
if (line[x] == right && is_bracket(line, x, is_lit)) {
|
|
for (int lpc = x - 1; lpc > 0; lpc--) {
|
|
if (line[lpc] == right && is_bracket(line, lpc, is_lit)) {
|
|
depth += 1;
|
|
}
|
|
else if (line[lpc] == left && is_bracket(line, lpc, is_lit)) {
|
|
if (depth == 0) {
|
|
al.get_attrs().emplace_back(
|
|
line_range(lpc, lpc + 1),
|
|
&view_curses::VC_STYLE,
|
|
matching_bracket_attrs);
|
|
break;
|
|
}
|
|
else {
|
|
depth -= 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (line[x] == left && is_bracket(line, x, is_lit)) {
|
|
for (size_t lpc = x + 1; lpc < line.length(); lpc++) {
|
|
if (line[lpc] == left && is_bracket(line, lpc, is_lit)) {
|
|
depth += 1;
|
|
}
|
|
else if (line[lpc] == right && is_bracket(line, lpc, is_lit)) {
|
|
if (depth == 0) {
|
|
al.get_attrs().emplace_back(
|
|
line_range(lpc, lpc + 1),
|
|
&view_curses::VC_STYLE,
|
|
matching_bracket_attrs);
|
|
break;
|
|
}
|
|
else {
|
|
depth -= 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
int first_left = -1;
|
|
|
|
depth = 0;
|
|
|
|
for (size_t lpc = 1; lpc < line.length(); lpc++) {
|
|
if (line[lpc] == left && is_bracket(line, lpc, is_lit)) {
|
|
depth += 1;
|
|
if (first_left == -1) {
|
|
first_left = lpc;
|
|
}
|
|
}
|
|
else if (line[lpc] == right && is_bracket(line, lpc, is_lit)) {
|
|
if (depth > 0) {
|
|
depth -= 1;
|
|
}
|
|
else {
|
|
al.get_attrs().emplace_back(
|
|
line_range(is_lit ? lpc - 1 : lpc, lpc + 1),
|
|
&view_curses::VC_STYLE,
|
|
missing_bracket_attrs);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (depth > 0) {
|
|
al.get_attrs().emplace_back(
|
|
line_range(is_lit ? first_left - 1 : first_left, first_left + 1),
|
|
&view_curses::VC_STYLE,
|
|
missing_bracket_attrs);
|
|
}
|
|
}
|
|
|
|
static char safe_read(const string &str, string::size_type index)
|
|
{
|
|
if (index < str.length()) {
|
|
return str.at(index);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void readline_regex_highlighter_int(attr_line_t &al, int x, int skip)
|
|
{
|
|
view_colors &vc = view_colors::singleton();
|
|
int special_char = (
|
|
A_BOLD|vc.attrs_for_role(view_colors::VCR_RE_SPECIAL));
|
|
int class_attrs = (
|
|
A_BOLD|vc.attrs_for_role(view_colors::VCR_SYMBOL));
|
|
int repeated_char_attrs = vc.attrs_for_role(view_colors::VCR_RE_REPEAT);
|
|
int bracket_attrs = vc.attrs_for_role(view_colors::VCR_OK);
|
|
int error_attrs = (
|
|
A_BOLD|A_REVERSE|vc.attrs_for_role(view_colors::VCR_ERROR));
|
|
|
|
static const char *brackets[] = {
|
|
"[]",
|
|
"{}",
|
|
"()",
|
|
"QE",
|
|
|
|
NULL
|
|
};
|
|
|
|
string &line = al.get_string();
|
|
bool backslash_is_quoted = false;
|
|
|
|
for (size_t lpc = skip; lpc < line.length(); lpc++) {
|
|
if (line[lpc - 1] != '\\') {
|
|
switch (line[lpc]) {
|
|
case '^':
|
|
case '$':
|
|
case '*':
|
|
case '+':
|
|
case '|':
|
|
case '.':
|
|
al.get_attrs().emplace_back(
|
|
line_range(lpc, lpc + 1),
|
|
&view_curses::VC_STYLE,
|
|
special_char);
|
|
|
|
if ((line[lpc] == '*' || line[lpc] == '+') &&
|
|
check_re_prev(line, lpc)) {
|
|
al.get_attrs().emplace_back(
|
|
line_range(lpc - 1, lpc),
|
|
&view_curses::VC_STYLE,
|
|
repeated_char_attrs);
|
|
}
|
|
break;
|
|
case '?': {
|
|
struct line_range lr(lpc, lpc + 1);
|
|
|
|
if (line[lpc - 1] == '(') {
|
|
switch (line[lpc + 1]) {
|
|
case ':':
|
|
case '!':
|
|
case '>':
|
|
case '<':
|
|
case '#':
|
|
lr.lr_end += 1;
|
|
break;
|
|
}
|
|
al.get_attrs().emplace_back(
|
|
lr,
|
|
&view_curses::VC_STYLE,
|
|
bracket_attrs);
|
|
}
|
|
else {
|
|
al.get_attrs().emplace_back(
|
|
lr,
|
|
&view_curses::VC_STYLE,
|
|
special_char);
|
|
|
|
if (check_re_prev(line, lpc)) {
|
|
al.get_attrs().emplace_back(
|
|
line_range(lpc - 1, lpc),
|
|
&view_curses::VC_STYLE,
|
|
repeated_char_attrs);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
case '(':
|
|
case ')':
|
|
case '{':
|
|
case '}':
|
|
case '[':
|
|
case ']':
|
|
al.get_attrs().emplace_back(
|
|
line_range(lpc, lpc + 1),
|
|
&view_curses::VC_STYLE,
|
|
bracket_attrs);
|
|
break;
|
|
|
|
}
|
|
}
|
|
if (line[lpc - 1] == '\\') {
|
|
if (backslash_is_quoted) {
|
|
backslash_is_quoted = false;
|
|
continue;
|
|
}
|
|
switch (line[lpc]) {
|
|
case '\\':
|
|
backslash_is_quoted = true;
|
|
al.with_attr(string_attr(
|
|
line_range(lpc - 1, lpc + 1),
|
|
&view_curses::VC_STYLE,
|
|
special_char));
|
|
break;
|
|
case 'd':
|
|
case 'D':
|
|
case 'h':
|
|
case 'H':
|
|
case 'N':
|
|
case 'R':
|
|
case 's':
|
|
case 'S':
|
|
case 'v':
|
|
case 'V':
|
|
case 'w':
|
|
case 'W':
|
|
case 'X':
|
|
|
|
case 'A':
|
|
case 'b':
|
|
case 'B':
|
|
case 'G':
|
|
case 'Z':
|
|
case 'z':
|
|
al.get_attrs().emplace_back(
|
|
line_range(lpc - 1, lpc + 1),
|
|
&view_curses::VC_STYLE,
|
|
class_attrs);
|
|
break;
|
|
case ' ':
|
|
al.get_attrs().emplace_back(
|
|
line_range(lpc - 1, lpc + 1),
|
|
&view_curses::VC_STYLE,
|
|
error_attrs);
|
|
break;
|
|
case '0':
|
|
case 'x':
|
|
if (safe_read(line, lpc + 1) == '{') {
|
|
al.with_attr(string_attr(
|
|
line_range(lpc - 1, lpc + 1),
|
|
&view_curses::VC_STYLE,
|
|
special_char));
|
|
}
|
|
else if (isdigit(safe_read(line, lpc + 1)) &&
|
|
isdigit(safe_read(line, lpc + 2))) {
|
|
al.with_attr(string_attr(
|
|
line_range(lpc - 1, lpc + 3),
|
|
&view_curses::VC_STYLE,
|
|
special_char));
|
|
}
|
|
else {
|
|
al.with_attr(string_attr(
|
|
line_range(lpc - 1, lpc + 1),
|
|
&view_curses::VC_STYLE,
|
|
error_attrs));
|
|
}
|
|
break;
|
|
case 'Q':
|
|
case 'E':
|
|
al.with_attr(string_attr(
|
|
line_range(lpc - 1, lpc + 1),
|
|
&view_curses::VC_STYLE,
|
|
bracket_attrs));
|
|
break;
|
|
default:
|
|
if (isdigit(line[lpc])) {
|
|
al.get_attrs().emplace_back(
|
|
line_range(lpc - 1, lpc + 1),
|
|
&view_curses::VC_STYLE,
|
|
special_char);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
for (int lpc = 0; brackets[lpc]; lpc++) {
|
|
find_matching_bracket(al, x, brackets[lpc][0], brackets[lpc][1]);
|
|
}
|
|
}
|
|
|
|
void readline_regex_highlighter(attr_line_t &al, int x)
|
|
{
|
|
readline_regex_highlighter_int(al, x, 1);
|
|
}
|
|
|
|
void readline_command_highlighter(attr_line_t &al, int x)
|
|
{
|
|
static const pcrepp RE_PREFIXES(
|
|
R"(^:(filter-in|filter-out|delete-filter|enable-filter|disable-filter|highlight|clear-highlight|create-search-table\s+[^\s]+\s+))");
|
|
static const pcrepp SH_PREFIXES("^:(eval|open|append-to|write-to|write-csv-to|write-json-to)");
|
|
static const pcrepp IDENT_PREFIXES("^:(tag|untag|delete-tags)");
|
|
static const pcrepp COLOR_PREFIXES("^:(config)");
|
|
static const pcrepp COLOR_RE("(#(?:[a-fA-F0-9]{3}|[a-fA-F0-9]{6}))");
|
|
|
|
view_colors &vc = view_colors::singleton();
|
|
int keyword_attrs = (
|
|
A_BOLD|vc.attrs_for_role(view_colors::VCR_KEYWORD));
|
|
|
|
const string &line = al.get_string();
|
|
pcre_context_static<30> pc;
|
|
pcre_input pi(line);
|
|
size_t ws_index;
|
|
|
|
|
|
ws_index = line.find(' ');
|
|
string command = line.substr(0, ws_index);
|
|
if (ws_index != string::npos) {
|
|
al.get_attrs().emplace_back(
|
|
line_range(1, ws_index),
|
|
&view_curses::VC_STYLE,
|
|
keyword_attrs);
|
|
}
|
|
if (RE_PREFIXES.match(pc, pi)) {
|
|
readline_regex_highlighter_int(al, x, 1 + pc[0]->length());
|
|
}
|
|
pi.reset(line);
|
|
if (SH_PREFIXES.match(pc, pi)) {
|
|
readline_shlex_highlighter(al, x);
|
|
}
|
|
pi.reset(line);
|
|
if (COLOR_PREFIXES.match(pc, pi)) {
|
|
pi.reset(line);
|
|
if (COLOR_RE.match(pc, pi)) {
|
|
pcre_context::capture_t *cap = pc[0];
|
|
string hash_color = pi.get_substr(cap);
|
|
string errmsg;
|
|
rgb_color rgb_fg, rgb_bg;
|
|
attr_t color_hint_attrs = vc.attrs_for_role(view_colors::VCR_COLOR_HINT);
|
|
int pnum = PAIR_NUMBER(color_hint_attrs);
|
|
|
|
if (rgb_color::from_str(hash_color, rgb_bg, errmsg)) {
|
|
pnum -= 1;
|
|
vc.ensure_color_pair(pnum, rgb_fg, rgb_bg);
|
|
|
|
al.get_attrs().emplace_back(
|
|
line_range{cap->c_begin, cap->c_begin + 1},
|
|
&view_curses::VC_ROLE,
|
|
view_colors::VCR_COLOR_HINT);
|
|
}
|
|
}
|
|
}
|
|
pi.reset(line);
|
|
if (IDENT_PREFIXES.match(pc, pi) && ws_index != string::npos) {
|
|
size_t start = ws_index, last;
|
|
|
|
do {
|
|
for (; start < line.length() && isspace(line[start]); start++);
|
|
for (last = start; last < line.length() && !isspace(line[last]); last++);
|
|
struct line_range lr{(int) start, (int) last};
|
|
|
|
if (lr.length() > 0 && !lr.contains(x) && !lr.contains(x - 1)) {
|
|
string value(lr.substr(line), lr.sublen(line));
|
|
|
|
if ((command == ":tag" ||
|
|
command == ":untag" ||
|
|
command == ":delete-tags") &&
|
|
!startswith(value, "#")) {
|
|
value = "#" + value;
|
|
}
|
|
al.get_attrs().emplace_back(lr,
|
|
&view_curses::VC_STYLE,
|
|
vc.attrs_for_ident(value));
|
|
}
|
|
|
|
start = last;
|
|
} while (start < line.length());
|
|
}
|
|
}
|
|
|
|
void readline_sqlite_highlighter(attr_line_t &al, int x)
|
|
{
|
|
static string keyword_re_str = sql_keyword_re() + "|\\.schema|\\.msgformats";
|
|
static pcrepp keyword_pcre(keyword_re_str.c_str(), PCRE_CASELESS);
|
|
static pcrepp string_literal_pcre("'[^']*('(?:'[^']*')*|$)");
|
|
static pcrepp ident_pcre("(\\$?\\b[a-z_]\\w*)|\"([^\"]+)\"|\\[([^\\]]+)]", PCRE_CASELESS);
|
|
|
|
static const char *brackets[] = {
|
|
"[]",
|
|
"()",
|
|
|
|
NULL
|
|
};
|
|
|
|
view_colors &vc = view_colors::singleton();
|
|
|
|
int keyword_attrs = vc.attrs_for_role(view_colors::VCR_KEYWORD);
|
|
int symbol_attrs = vc.attrs_for_role(view_colors::VCR_SYMBOL);
|
|
int string_attrs = vc.attrs_for_role(view_colors::VCR_STRING);
|
|
int error_attrs = vc.attrs_for_role(view_colors::VCR_ERROR) | A_REVERSE;
|
|
|
|
pcre_context_static<30> pc;
|
|
pcre_input pi(al.get_string());
|
|
string &line = al.get_string();
|
|
|
|
while (ident_pcre.match(pc, pi)) {
|
|
pcre_context::capture_t *cap = pc.first_valid();
|
|
int attrs = vc.attrs_for_ident(pi.get_substr_start(cap), cap->length());
|
|
struct line_range lr(cap->c_begin, cap->c_end);
|
|
|
|
if (line[cap->c_end] == '(') {
|
|
|
|
}
|
|
else if (!lr.contains(x) && !lr.contains(x - 1)) {
|
|
al.get_attrs().emplace_back(
|
|
lr, &view_curses::VC_STYLE, attrs);
|
|
}
|
|
}
|
|
|
|
pi.reset(line);
|
|
|
|
while (keyword_pcre.match(pc, pi)) {
|
|
pcre_context::capture_t *cap = pc.all();
|
|
|
|
al.get_attrs().emplace_back(
|
|
line_range(cap->c_begin, cap->c_end),
|
|
&view_curses::VC_STYLE,
|
|
keyword_attrs);
|
|
}
|
|
|
|
for (size_t lpc = 0; lpc < line.length(); lpc++) {
|
|
switch (line[lpc]) {
|
|
case '*':
|
|
case '<':
|
|
case '>':
|
|
case '=':
|
|
case '!':
|
|
case '-':
|
|
case '+':
|
|
al.get_attrs().emplace_back(
|
|
line_range(lpc, lpc + 1),
|
|
&view_curses::VC_STYLE,
|
|
symbol_attrs);
|
|
break;
|
|
}
|
|
}
|
|
|
|
pi.reset(line);
|
|
|
|
while (string_literal_pcre.match(pc, pi)) {
|
|
pcre_context::capture_t *cap = pc.all();
|
|
struct line_range lr(cap->c_begin, cap->c_end);
|
|
string_attrs_t &sa = al.get_attrs();
|
|
|
|
remove_string_attr(sa, lr);
|
|
|
|
if (line[cap->c_end - 1] != '\'') {
|
|
sa.emplace_back(
|
|
line_range(cap->c_begin, cap->c_begin + 1),
|
|
&view_curses::VC_STYLE,
|
|
error_attrs);
|
|
lr.lr_start += 1;
|
|
}
|
|
sa.emplace_back(lr, &view_curses::VC_STYLE, string_attrs);
|
|
}
|
|
|
|
for (int lpc = 0; brackets[lpc]; lpc++) {
|
|
find_matching_bracket(al, x, brackets[lpc][0], brackets[lpc][1]);
|
|
}
|
|
}
|
|
|
|
void readline_shlex_highlighter(attr_line_t &al, int x)
|
|
{
|
|
view_colors &vc = view_colors::singleton();
|
|
int special_char = (
|
|
A_BOLD|vc.attrs_for_role(view_colors::VCR_SYMBOL));
|
|
int error_attrs = vc.attrs_for_role(view_colors::VCR_ERROR) | A_REVERSE;
|
|
int string_attrs = vc.attrs_for_role(view_colors::VCR_STRING);
|
|
const string &str = al.get_string();
|
|
pcre_context::capture_t cap;
|
|
shlex_token_t token;
|
|
int quote_start = -1;
|
|
shlex lexer(str);
|
|
|
|
while (lexer.tokenize(cap, token)) {
|
|
switch (token) {
|
|
case ST_ERROR:
|
|
al.with_attr(string_attr(
|
|
line_range(cap.c_begin, cap.c_end),
|
|
&view_curses::VC_STYLE,
|
|
error_attrs));
|
|
break;
|
|
case ST_TILDE:
|
|
case ST_ESCAPE:
|
|
al.with_attr(string_attr(
|
|
line_range(cap.c_begin, cap.c_end),
|
|
&view_curses::VC_STYLE,
|
|
special_char));
|
|
break;
|
|
case ST_DOUBLE_QUOTE_START:
|
|
case ST_SINGLE_QUOTE_START:
|
|
quote_start = cap.c_begin;
|
|
break;
|
|
case ST_DOUBLE_QUOTE_END:
|
|
case ST_SINGLE_QUOTE_END:
|
|
al.with_attr(string_attr(
|
|
line_range(quote_start, cap.c_end),
|
|
&view_curses::VC_STYLE,
|
|
string_attrs));
|
|
quote_start = -1;
|
|
break;
|
|
case ST_VARIABLE_REF:
|
|
case ST_QUOTED_VARIABLE_REF: {
|
|
int extra = token == ST_VARIABLE_REF ? 0 : 1;
|
|
string ident = str.substr(cap.c_begin + 1 + extra, cap.length() - 1 - extra * 2);
|
|
int attrs = vc.attrs_for_ident(ident.c_str(), ident.size());
|
|
|
|
al.with_attr(string_attr(
|
|
line_range(cap.c_begin, cap.c_begin + 1 + extra),
|
|
&view_curses::VC_STYLE,
|
|
special_char));
|
|
al.with_attr(string_attr(
|
|
line_range(cap.c_begin + 1 + extra, cap.c_end - extra),
|
|
&view_curses::VC_STYLE,
|
|
x == cap.c_end || cap.contains(x) ? special_char : attrs));
|
|
if (extra) {
|
|
al.with_attr(string_attr(
|
|
line_range(cap.c_end - 1, cap.c_end),
|
|
&view_curses::VC_STYLE,
|
|
special_char));
|
|
}
|
|
break;
|
|
}
|
|
case ST_WHITESPACE:
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (quote_start != -1) {
|
|
al.with_attr(string_attr(
|
|
line_range(quote_start, quote_start + 1),
|
|
&view_curses::VC_STYLE,
|
|
error_attrs));
|
|
}
|
|
}
|