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https://github.com/ksherlock/mpw-shell.git
synced 2025-03-18 22:31:02 +00:00
process vector of commands all at once.
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parent
6d9e5dc78c
commit
475bd392ad
@ -14,9 +14,10 @@
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nl = '\n' | '\r';
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action push_token {
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if (!scratch.empty()) {
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if (!scratch.empty() || quoted) {
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tokens.emplace_back(std::move(scratch));
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scratch.clear();
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quoted = false;
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}
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}
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@ -61,6 +62,7 @@
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[']
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( (any-nl-[']) $push_back )*
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[']
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${ quoted = true; }
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$err{
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throw std::runtime_error("### MPW Shell - 's must occur in pairs.");
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}
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@ -88,6 +90,7 @@
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(any-escape-["]) $push_back
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)*
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["]
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${ quoted = true; }
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$err{
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throw std::runtime_error("### MPW Shell - \"s must occur in pairs.");
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}
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@ -221,6 +224,8 @@ std::vector<token> tokenize(const std::string &s, bool eval)
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{
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std::vector<token> tokens;
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std::string scratch;
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bool quoted = false; // found a quote character ("" creates a token)
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%%machine tokenizer;
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%% write data;
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@ -240,7 +245,7 @@ std::vector<token> tokenize(const std::string &s, bool eval)
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throw std::runtime_error("MPW Shell - Lexer error.");
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}
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if (!scratch.empty()) {
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if (!scratch.empty() || quoted) {
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tokens.emplace_back(std::move(scratch));
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scratch.clear();
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}
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@ -17,6 +17,7 @@
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#include "command.h"
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#include "mapped_file.h"
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#include "error.h"
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//#include <histedit.h>
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#include <editline/readline.h>
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@ -29,20 +30,20 @@ void init(Environment &e) {
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}
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int read_file(phase1 &p, const std::string &file) {
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mapped_file mf;
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const mapped_file mf(file, mapped_file::readonly);
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mf.open(file, mapped_file::readonly);
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p.process(mf.const_begin(), mf.const_end(), true);
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p.process(mf.begin(), mf.end(), true);
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return 0;
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}
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int read_stdin(phase1 &p) {
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int read_fd(phase1 &p, int fd) {
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unsigned char buffer[2048];
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ssize_t size;
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for (;;) {
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size = read(STDIN_FILENO, buffer, sizeof(buffer));
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size = read(fd, buffer, sizeof(buffer));
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if (size == 0) break;
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if (size < 0) {
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if (errno == EINTR) continue;
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@ -77,7 +78,12 @@ int interactive(phase1 &p) {
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free(cp);
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if (s.empty()) continue;
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add_history(s.c_str());
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// don't add if same as previous entry.
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HIST_ENTRY *he = current_history();
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if (he == nullptr || s != he->line)
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add_history(s.c_str());
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s.push_back('\n');
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try {
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p.process(s);
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@ -107,23 +113,38 @@ int main(int argc, char **argv) {
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phase1 p1;
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phase2 p2;
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p1 >>= p2;
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p2 >>= [&e](command_ptr &&ptr) {
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fdmask fds;
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ptr->execute(e, fds);
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};
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/*
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p1 >>= [&p2](std::string &&s) {
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fprintf(stdout, " -> %s\n", s.c_str());
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p2.process(s);
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if (s.empty()) p2.finish();
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else p2(std::move(s));
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};
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*/
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read_file(p1, "/Users/kelvin/mpw/Startup");
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p2.finish();
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interactive(p1);
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p2 >>= [&e](command_ptr_vector &&v) {
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for (auto iter = v.begin(); iter != v.end(); ++iter) {
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auto &ptr = *iter;
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fdmask fds;
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try {
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ptr->execute(e, fds);
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} catch (execution_of_input_terminated &ex) {
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if (!(ptr->terminal() && ++iter == v.end())) {
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fprintf(stderr, "%s\n", ex.what());
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}
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return;
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}
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}
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};
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fprintf(stdout, "MPW Shell 0.0\n");
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e.startup(true);
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read_file(p1, "/Users/kelvin/mpw/Startup");
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//p2.finish();
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e.startup(false);
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if (isatty(STDIN_FILENO))
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interactive(p1);
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else
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read_fd(p1, STDIN_FILENO);
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p2.finish();
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return 0;
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2
phase2.h
2
phase2.h
@ -43,7 +43,7 @@ protected:
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class phase2 {
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public:
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typedef std::function<void(command_ptr &&)> pipe_function;
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typedef std::function<void(command_ptr_vector &&)> pipe_function;
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phase2();
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phase2(const phase2 &) = delete;
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@ -202,6 +202,8 @@ void phase2::classify() {
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void phase2::process(const std::string &line) {
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if (line.empty()) { finish(); return; }
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int pcount = 0; // special form parens cannot cross lines.
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int cs;
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@ -238,12 +240,13 @@ void phase2::parse(int token, std::string &&s) {
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void phase2::exec() {
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if (pipe_to && parser) {
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command_ptr_vector tmp;
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for (auto &p : parser->command_queue) {
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if (p) {
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pipe_to(std::move(p));
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}
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if (p) tmp.emplace_back(std::move(p));
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}
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parser->command_queue.clear();
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if (!tmp.empty()) pipe_to(std::move(tmp));
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}
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}
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