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remove old code
This commit is contained in:
Kelvin Sherlock
parent
e83477c9b2
commit
680e57fcb0
210
mpw/environ.rl
210
mpw/environ.rl
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/*
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* Copyright (c) 2013, Kelvin W Sherlock
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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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* 1. 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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* 2. 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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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY 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 COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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* ANY 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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*/
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%%{
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machine lexer;
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ws = [ \t];
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word = [A-Za-z0-9_];
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action emplace {
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//printf("emplacing %s\n", name.c_str());
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// trim any whitespace.
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//while (value.length() && isspace(value.back()))
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// value.pop_back();
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// ?= only sets if not already set.
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auto iter = env.find(name);
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if (iter == env.end())
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{
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env[std::move(name)] = std::move(value);
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}
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else
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{
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if (overwrite)
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iter->second = std::move(value);
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}
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}
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value := |*
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'$' word+ => {
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std::string name(ts + 1, te);
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auto iter = env.find(name);
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if (iter != env.end())
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value.append(iter->second);
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};
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'${' word+ '}' => {
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std::string name(ts + 2, te - 1);
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auto iter = env.find(name);
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if (iter != env.end())
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value.append(iter->second);
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};
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'$$' => {
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value.push_back('$');
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};
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'\n' => emplace;
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any - '\n' => {
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value.push_back(fc);
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} ;
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*|;
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# exit w/ cs = lexer_en_comment.
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comment := any* ${ fbreak; };
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assignment :=
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word+ ${ name.push_back(fc); }
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ws*
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(
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'?=' ${ overwrite = false; }
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'=' ${ overwrite = true; }
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)
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ws*
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# ws does not include '\n', so that will be handled
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# as a value.
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(any - ws)? ${ fhold; fgoto value; }
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;
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main := |*
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ws; # leading space
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'\n'; # blank line.
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'#' => { fgoto comment; };
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word => { fhold; fgoto assignment; };
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*|;
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}%%
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#include <string>
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#include <unordered_map>
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#include <cstdio>
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#include <cctype>
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namespace MPW {
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void LoadEnvironment(std::string &envfile, std::unordered_map<std::string, std::string> &env)
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{
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%% write data;
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FILE *fp;
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fp = fopen(envfile.c_str(), "r");
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if (!fp) return;
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/*
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* fgetln (for something more portable, try getline)
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* may or may not include the trailing \r. at the eof.
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* To compensate, trim all trailing whitespace and run it
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* a second time (with eof=pe) on a string of "\n"
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*
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*/
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for(;;)
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{
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const char *line;
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size_t length;
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line = fgetln(fp, &length);
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if (!line) break; // eof or error.
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// strip any trailing space.
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while (length && isspace(line[length - 1]))
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length--;
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if (!length) continue;
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std::string name;
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std::string value;
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std::string buffer(line, line + length);
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buffer.push_back('\n');
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const char *p = buffer.c_str();
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const char *pe = p + buffer.length();
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const char *eof = pe;
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const char *te;
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const char *ts;
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bool overwrite = true;
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int cs, act;
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%%write init;
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%%write exec;
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if (cs == lexer_error)
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{
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fprintf(stderr, "Bad environment: %.*s\n", (int)length, line);
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continue;
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}
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}
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fclose(fp);
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}
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} // namespace
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#ifdef TEST
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// clang++ -DTEST -std=c++11 -stdlib=libc++ environ.cpp
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int main(int argc, char **argv)
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{
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for (int i = 1; i < argc; ++i)
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{
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std::unordered_map<std::string, std::string> env;
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std::string f(argv[i]);
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MPW::LoadEnvironment(f, env);
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for (const auto &kv : env)
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{
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printf("%s -> %s\n", kv.first.c_str(), kv.second.c_str());
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}
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}
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return 0;
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}
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#endif
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82
mpw/epv.rl
82
mpw/epv.rl
@ -1,82 +0,0 @@
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/*
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* Copyright (c) 2013, Kelvin W Sherlock
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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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* 1. 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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* 2. 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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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY 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 COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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* ANY 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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*/
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%%{
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machine m;
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main := |*
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'{' [A-Za-z0-9_]+ '}' {
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std::string name(ts + 1, te - 1);
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rv.append(GetEnv(name));
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};
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any {
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rv.push_back(*ts);
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};
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*|;
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}%%
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#include <string>
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#include "mpw.h"
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namespace {
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%%write data;
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}
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namespace MPW {
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std::string ExpandPathVariables(std::string s)
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{
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std::string rv;
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auto p = s.c_str();
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auto pe = p + s.length();
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auto eof = pe;
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const char *ts;
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const char *te;
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int cs;
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int act;
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%%write init;
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%%write exec;
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return rv;
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}
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}
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