mirror of
https://github.com/tstack/lnav.git
synced 2024-09-11 13:05:51 +03:00
118 lines
3.5 KiB
C++
118 lines
3.5 KiB
C++
/**
|
|
* Copyright (c) 2015, 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.
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include "config.h"
|
|
#include "shlex.hh"
|
|
|
|
using namespace std;
|
|
|
|
const char* ST_TOKEN_NAMES[] = {
|
|
"eof",
|
|
"wsp",
|
|
"esc",
|
|
"dst",
|
|
"den",
|
|
"sst",
|
|
"sen",
|
|
"ref",
|
|
"qrf",
|
|
"til",
|
|
};
|
|
|
|
static void
|
|
put_underline(FILE* file, string_fragment frag)
|
|
{
|
|
for (int lpc = 0; lpc < frag.sf_end; lpc++) {
|
|
if (lpc == frag.sf_begin) {
|
|
fputc('^', stdout);
|
|
} else if (lpc == (frag.sf_end - 1)) {
|
|
fputc('^', stdout);
|
|
} else if (lpc > frag.sf_begin) {
|
|
fputc('-', stdout);
|
|
} else {
|
|
fputc(' ', stdout);
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
main(int argc, char* argv[])
|
|
{
|
|
if (argc < 2) {
|
|
fprintf(stderr, "error: expecting an argument to parse\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
shlex lexer(argv[1], strlen(argv[1]));
|
|
bool done = false;
|
|
|
|
printf(" %s\n", argv[1]);
|
|
while (!done) {
|
|
auto tokenize_res = lexer.tokenize();
|
|
if (tokenize_res.isErr()) {
|
|
auto te = tokenize_res.unwrapErr();
|
|
|
|
printf("err ");
|
|
put_underline(stdout, te.te_source);
|
|
printf(" -- %s\n", te.te_msg);
|
|
break;
|
|
}
|
|
|
|
auto tr = tokenize_res.unwrap();
|
|
if (tr.tr_token == shlex_token_t::eof) {
|
|
done = true;
|
|
}
|
|
printf("%s ", ST_TOKEN_NAMES[(int) tr.tr_token]);
|
|
put_underline(stdout, tr.tr_frag);
|
|
printf("\n");
|
|
}
|
|
|
|
lexer.reset();
|
|
std::string result;
|
|
std::map<std::string, scoped_value_t> vars;
|
|
if (lexer.eval(result, scoped_resolver{&vars})) {
|
|
printf("eval -- %s\n", result.c_str());
|
|
}
|
|
lexer.reset();
|
|
auto split_res = lexer.split(scoped_resolver{&vars});
|
|
if (split_res.isOk()) {
|
|
auto sresult = split_res.unwrap();
|
|
printf("split:\n");
|
|
for (size_t lpc = 0; lpc < sresult.size(); lpc++) {
|
|
printf("% 3zu ", lpc);
|
|
put_underline(stdout, sresult[lpc].se_origin);
|
|
printf(" -- %s\n", sresult[lpc].se_value.c_str());
|
|
}
|
|
}
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|