+/* Cycript - Remove Execution Server and Disassembler
+ * Copyright (C) 2009 Jay Freeman (saurik)
+*/
+
+/* Modified BSD License {{{ */
+/*
+ * Redistribution and use in source and binary
+ * forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the
+ * above copyright notice, this list of conditions
+ * and the following disclaimer.
+ * 2. 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.
+ * 3. The name of the author may not be used to endorse
+ * or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+*/
+/* }}} */
+
+#define _GNU_SOURCE
+
+#include <substrate.h>
+#include "cycript.hpp"
+
#include <cstdio>
+#include <sstream>
+
+#include <setjmp.h>
+
+#include <readline/readline.h>
+#include <readline/history.h>
+
+#include <sys/mman.h>
+
+#include <errno.h>
+#include <unistd.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include "Cycript.tab.hh"
+
+static jmp_buf ctrlc_;
+
+static void sigint(int) {
+ longjmp(ctrlc_, 1);
+}
+
+static JSStringRef Result_;
+
+void Run(const char *code, FILE *fout) { _pooled
+ JSStringRef script(JSStringCreateWithUTF8CString(code));
+
+ JSContextRef context(CYGetJSContext());
+
+ JSValueRef exception(NULL);
+ JSValueRef result(JSEvaluateScript(context, script, NULL, NULL, 0, &exception));
+ JSStringRelease(script);
+
+ if (exception != NULL) { error:
+ result = exception;
+ exception = NULL;
+ }
+
+ if (!JSValueIsUndefined(context, result)) {
+ CYPool pool;
+ const char *json;
+
+ json = CYPoolCYONString(pool, context, result, &exception);
+ if (exception != NULL)
+ goto error;
+
+ CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
+
+ if (fout != NULL) {
+ fputs(json, fout);
+ fputs("\n", fout);
+ fflush(fout);
+ }
+ }
+}
+
+static void Console() {
+ bool bypass(false);
+ bool debug(false);
+
+ FILE *fout(stdout);
+
+ rl_bind_key('\t', rl_insert);
+
+ struct sigaction action;
+ sigemptyset(&action.sa_mask);
+ action.sa_handler = &sigint;
+ action.sa_flags = 0;
+ sigaction(SIGINT, &action, NULL);
+
+ restart: for (;;) {
+ std::string command;
+ std::vector<std::string> lines;
+
+ bool extra(false);
+ const char *prompt("cy# ");
+
+ if (setjmp(ctrlc_) != 0) {
+ fputs("\n", fout);
+ fflush(fout);
+ goto restart;
+ }
+
+ read:
+ char *line(readline(prompt));
+ if (line == NULL)
+ break;
+
+ if (!extra) {
+ extra = true;
+ if (line[0] == '\\') {
+ std::string data(line + 1);
+ if (data == "bypass") {
+ bypass = !bypass;
+ fprintf(fout, "bypass == %s\n", bypass ? "true" : "false");
+ fflush(fout);
+ } else if (data == "debug") {
+ debug = !debug;
+ fprintf(fout, "debug == %s\n", debug ? "true" : "false");
+ fflush(fout);
+ }
+ add_history(line);
+ goto restart;
+ }
+ }
+
+ lines.push_back(line);
+ command += line;
+ free(line);
+
+ std::string code;
+
+ if (bypass)
+ code = command;
+ else {
+ CYDriver driver("");
+ cy::parser parser(driver);
+
+ driver.data_ = command.c_str();
+ driver.size_ = command.size();
+
+ if (parser.parse() != 0 || !driver.errors_.empty()) {
+ for (CYDriver::Errors::const_iterator i(driver.errors_.begin()); i != driver.errors_.end(); ++i) {
+ cy::position begin(i->location_.begin);
+ if (begin.line != lines.size() || begin.column - 1 != lines.back().size()) {
+ std::cerr << i->message_ << std::endl;
+ add_history(command.c_str());
+ goto restart;
+ }
+ }
+
+ driver.errors_.clear();
+
+ command += '\n';
+ prompt = "cy> ";
+ goto read;
+ }
+
+ if (driver.source_ == NULL)
+ goto restart;
+
+ std::ostringstream str;
+ driver.source_->Show(str);
+ code = str.str();
+ }
+
+ add_history(command.c_str());
+
+ if (debug)
+ std::cout << code << std::endl;
+
+ Run(code.c_str(), fout);
+ }
+
+ fputs("\n", fout);
+ fflush(fout);
+}
+
+static void *Map(const char *path, size_t *psize) {
+ int fd;
+ _syscall(fd = open(path, O_RDONLY));
+
+ struct stat stat;
+ _syscall(fstat(fd, &stat));
+ size_t size(stat.st_size);
+
+ *psize = size;
+
+ void *base;
+ _syscall(base = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0));
+
+ _syscall(close(fd));
+ return base;
+}
+
+int main(int argc, const char *argv[]) {
+ const char *script;
+
+ if (argc == 1)
+ script = NULL;
+ else {
+ CYSetArgs(argc - 1, argv + 1);
+ script = argv[1];
+ }
+
+ Result_ = CYCopyJSString("_");
+
+ if (script == NULL || strcmp(script, "-") == 0)
+ Console();
+ else {
+ CYDriver driver(script);
+ cy::parser parser(driver);
+
+ size_t size;
+ char *start(reinterpret_cast<char *>(Map(script, &size)));
+ char *end(start + size);
+
+ if (size >= 2 && start[0] == '#' && start[1] == '!') {
+ start += 2;
+ while (start != end && *start++ != '\n');
+ }
+
+ driver.data_ = start;
+ driver.size_ = end - start;
-int CYConsole(FILE *in, FILE *out, FILE *err);
+ if (parser.parse() != 0 || !driver.errors_.empty()) {
+ for (CYDriver::Errors::const_iterator i(driver.errors_.begin()); i != driver.errors_.end(); ++i)
+ std::cerr << i->location_.begin << ": " << i->message_ << std::endl;
+ } else if (driver.source_ != NULL) {
+ std::ostringstream str;
+ driver.source_->Show(str);
+ std::string code(str.str());
+ std::cout << code << std::endl;
+ Run(code.c_str(), stdout);
+ }
+ }
-int main() {
- return CYConsole(stdin, stdout, stderr);
+ return 0;
}
projects / cycript.git / blobdiff