mirror of
https://github.com/tstack/lnav
synced 2024-11-08 01:10:29 +00:00
118 lines
3.5 KiB
C++
118 lines
3.5 KiB
C++
/**
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* Copyright (c) 2015, 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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#include <stdlib.h>
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#include "config.h"
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#include "shlex.hh"
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using namespace std;
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const char* ST_TOKEN_NAMES[] = {
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"eof",
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"wsp",
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"esc",
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"dst",
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"den",
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"sst",
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"sen",
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"ref",
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"qrf",
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"til",
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};
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static void
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put_underline(FILE* file, string_fragment frag)
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{
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for (int lpc = 0; lpc < frag.sf_end; lpc++) {
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if (lpc == frag.sf_begin) {
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fputc('^', stdout);
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} else if (lpc == (frag.sf_end - 1)) {
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fputc('^', stdout);
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} else if (lpc > frag.sf_begin) {
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fputc('-', stdout);
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} else {
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fputc(' ', stdout);
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}
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}
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}
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int
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main(int argc, char* argv[])
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{
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if (argc < 2) {
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fprintf(stderr, "error: expecting an argument to parse\n");
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exit(EXIT_FAILURE);
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}
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shlex lexer(argv[1], strlen(argv[1]));
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bool done = false;
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printf(" %s\n", argv[1]);
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while (!done) {
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auto tokenize_res = lexer.tokenize();
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if (tokenize_res.isErr()) {
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auto te = tokenize_res.unwrapErr();
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printf("err ");
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put_underline(stdout, te.te_source);
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printf(" -- %s\n", te.te_msg);
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break;
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}
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auto tr = tokenize_res.unwrap();
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if (tr.tr_token == shlex_token_t::eof) {
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done = true;
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}
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printf("%s ", ST_TOKEN_NAMES[(int) tr.tr_token]);
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put_underline(stdout, tr.tr_frag);
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printf("\n");
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}
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lexer.reset();
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std::string result;
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std::map<std::string, scoped_value_t> vars;
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if (lexer.eval(result, scoped_resolver{&vars})) {
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printf("eval -- %s\n", result.c_str());
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}
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lexer.reset();
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auto split_res = lexer.split(scoped_resolver{&vars});
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if (split_res.isOk()) {
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auto sresult = split_res.unwrap();
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printf("split:\n");
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for (size_t lpc = 0; lpc < sresult.size(); lpc++) {
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printf("% 3zu ", lpc);
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put_underline(stdout, sresult[lpc].se_origin);
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printf(" -- %s\n", sresult[lpc].se_value.c_str());
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}
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}
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return EXIT_SUCCESS;
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}
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