Update the copyright year now that 2016 has begun.

[cycript.git] / Console.cpp

diff --git a/Console.cpp b/Console.cpp
index b0b376817cfaefce51e8f461abcc66257813418f..6587106bd0c3ac2378e476947fe4348f8ea7995f 100644 (file)
--- a/Console.cpp
+++ b/Console.cpp
@@ -1,5 +1,5 @@
-/* Cycript - Optimizing JavaScript Compiler/Runtime
- * Copyright (C) 2009-2015  Jay Freeman (saurik)
+/* Cycript - The Truly Universal Scripting Language
+ * Copyright (C) 2009-2016  Jay Freeman (saurik)

 */
 
 /* GNU Affero General Public License, Version 3 {{{ */
 */
 
 /* GNU Affero General Public License, Version 3 {{{ */


@@ -381,14 +381,59 @@ class History {
     }
 };
 
     }
 };
 

+template <typename Type_>
+static Type_ *CYmemrchr(Type_ *data, Type_ value, size_t size) {
+    while (size != 0)
+        if (data[--size] == value)
+            return data + size;
+    return NULL;
+}
+
+static void _lblcall(int (*command)(int, int), int count, int key) {
+    int last(_rl_last_c_pos);
+    // rl_rubout crashes in _rl_erase_at_end_of_line if _rl_last_c_pos != 0
+    if (command == &rl_rubout)
+        _rl_last_c_pos = 0;
+    for (int i(0); i != count; ++i)
+        if (command(1, key) != 0)
+            _assert(false);
+    _rl_last_c_pos = last;
+}
+

 static int CYConsoleKeyReturn(int count, int key) {
 static int CYConsoleKeyReturn(int count, int key) {

-    rl_insert(count, '\n');
+    if (rl_point != rl_end) {
+        if (memchr(rl_line_buffer, '\n', rl_end) == NULL) {
+            _lblcall(&rl_newline, count, key);
+            return 0;
+        }
+
+      insert:
+        char *before(CYmemrchr(rl_line_buffer, '\n', rl_point));
+        if (before == NULL)
+            before = rl_line_buffer;
+
+        int space(before + 1 - rl_line_buffer);
+        while (space != rl_point && rl_line_buffer[space] == ' ')
+            ++space;
+
+        int adjust(rl_line_buffer + space - 1 - before);
+        if (space == rl_point && adjust != 0)
+            _lblcall(&rl_rubout, adjust, '\b');
+
+        _lblcall(&rl_insert, count, '\n');
+        if (adjust != 0)
+            _lblcall(&rl_insert, adjust, ' ');
+
+        return 0;
+    }

 
 

-    if (rl_end != 0 && rl_point == rl_end && rl_line_buffer[0] == '?')
-        rl_done = 1;
-    else if (rl_point == rl_end) {
+    bool done(false);
+    if (rl_line_buffer[0] == '?')
+        done = true;
+    else {

         std::string command(rl_line_buffer, rl_end);
         std::string command(rl_line_buffer, rl_end);

-        std::istringstream stream(command);
+        command += '\n';
+        std::stringbuf stream(command);

 
         size_t last(std::string::npos);
         for (size_t i(0); i != std::string::npos; i = command.find('\n', i + 1))
 
         size_t last(std::string::npos);
         for (size_t i(0); i != std::string::npos; i = command.find('\n', i + 1))


@@ -399,18 +444,164 @@ static int CYConsoleKeyReturn(int count, int key) {
         if (driver.Parse() || !driver.errors_.empty())
             for (CYDriver::Errors::const_iterator error(driver.errors_.begin()); error != driver.errors_.end(); ++error) {
                 if (error->location_.begin.line != last + 1)
         if (driver.Parse() || !driver.errors_.empty())
             for (CYDriver::Errors::const_iterator error(driver.errors_.begin()); error != driver.errors_.end(); ++error) {
                 if (error->location_.begin.line != last + 1)

-                    rl_done = 1;
+                    done = true;

                 break;
             }
         else
                 break;
             }
         else

-            rl_done = 1;
+            done = true;
+    }
+
+    if (done) {
+        _lblcall(&rl_newline, count, key);
+        return 0;
+    }
+
+    // XXX: this was the most obvious fix, but is seriously dumb
+    goto insert;
+}
+
+static int CYConsoleKeyUp(int count, int key) {
+    for (; count != 0; --count) {
+        char *after(CYmemrchr(rl_line_buffer, '\n', rl_point));
+        if (after == NULL) {
+            if (int value = rl_get_previous_history(1, key))
+                return value;
+            continue;
+        }
+
+        char *before(CYmemrchr(rl_line_buffer, '\n', after - rl_line_buffer));
+        if (before == NULL)
+            before = rl_line_buffer - 1;
+
+        ptrdiff_t offset(rl_line_buffer + rl_point - after);
+        if (offset > after - before)
+            rl_point = after - rl_line_buffer;
+        else
+            rl_point = before + offset - rl_line_buffer;

     }
 
     }
 

-    if (rl_done)
-        std::cout << std::endl;

     return 0;
 }
 
     return 0;
 }
 

+static int CYConsoleKeyDown(int count, int key) {
+    for (; count != 0; --count) {
+        char *after(static_cast<char *>(memchr(rl_line_buffer + rl_point, '\n', rl_end - rl_point)));
+        if (after == NULL) {
+            int where(where_history());
+            if (int value = rl_get_next_history(1, key))
+                return value;
+            if (where != where_history()) {
+                char *first(static_cast<char *>(memchr(rl_line_buffer, '\n', rl_end)));
+                if (first != NULL)
+                    rl_point = first - 1 - rl_line_buffer;
+            }
+            continue;
+        }
+
+        char *before(CYmemrchr(rl_line_buffer, '\n', rl_point));
+        if (before == NULL)
+            before = rl_line_buffer - 1;
+
+        char *next(static_cast<char *>(memchr(after + 1, '\n', rl_line_buffer + rl_end - after - 1)));
+        if (next == NULL)
+            next = rl_line_buffer + rl_end;
+
+        ptrdiff_t offset(rl_line_buffer + rl_point - before);
+        if (offset > next - after)
+            rl_point = next - rl_line_buffer;
+        else
+            rl_point = after + offset - rl_line_buffer;
+    }
+
+    return 0;
+}
+
+static int CYConsoleLineBegin(int count, int key) {
+    while (rl_point != 0 && rl_line_buffer[rl_point - 1] != '\n')
+        --rl_point;
+    return 0;
+}
+
+static int CYConsoleLineEnd(int count, int key) {
+    while (rl_point != rl_end && rl_line_buffer[rl_point] != '\n')
+        ++rl_point;
+    if (rl_point != rl_end && rl_editing_mode == 0)
+        --rl_point;
+    return 0;
+}
+
+static int CYConsoleKeyBack(int count, int key) {
+    for (; count != 0; --count) {
+        if (rl_point == 0)
+            return 1;
+
+        char *before(CYmemrchr(rl_line_buffer, '\n', rl_point));
+        if (before == NULL) {
+            int adjust(std::min(count, rl_point));
+            _lblcall(&rl_rubout, adjust, key);
+            count -= adjust - 1;
+            continue;
+        }
+
+        int start(before + 1 - rl_line_buffer);
+        if (start == rl_point) rubout: {
+            _lblcall(&rl_rubout, 1, key);
+            continue;
+        }
+
+        for (int i(start); i != rl_point; ++i)
+            if (rl_line_buffer[i] != ' ')
+                goto rubout;
+        _lblcall(&rl_rubout, (rl_point - start) % 4 ?: 4, key);
+    }
+
+    return 0;
+}
+
+static int CYConsoleKeyTab(int count, int key) {
+    char *before(CYmemrchr(rl_line_buffer, '\n', rl_point));
+    if (before == NULL) complete:
+        return rl_complete_internal(rl_completion_mode(&CYConsoleKeyTab));
+    int start(before + 1 - rl_line_buffer);
+    for (int i(start); i != rl_point; ++i)
+        if (rl_line_buffer[i] != ' ')
+            goto complete;
+    _lblcall(&rl_insert, 4 - (rl_point - start) % 4, ' ');
+    return 0;
+}
+
+static void CYConsoleRemapBind(Keymap map, rl_command_func_t *from, rl_command_func_t *to) {
+    char **keyseqs(rl_invoking_keyseqs_in_map(from, map));
+    if (keyseqs == NULL)
+        return;
+    for (char **keyseq(keyseqs); *keyseq != NULL; ++keyseq) {
+        rl_bind_keyseq_in_map(*keyseq, to, map);
+        free(*keyseq);
+    }
+    free(keyseqs);
+}
+
+static void CYConsoleRemapKeys(Keymap map) {
+    CYConsoleRemapBind(map, &rl_beg_of_line, &CYConsoleLineBegin);
+    CYConsoleRemapBind(map, &rl_end_of_line, &CYConsoleLineEnd);
+
+    CYConsoleRemapBind(map, &rl_get_previous_history, &CYConsoleKeyUp);
+    CYConsoleRemapBind(map, &rl_get_next_history, &CYConsoleKeyDown);
+
+    CYConsoleRemapBind(map, &rl_rubout, &CYConsoleKeyBack);
+    CYConsoleRemapBind(map, &rl_complete, &CYConsoleKeyTab);
+}
+
+static void CYConsolePrepTerm(int meta) {
+    rl_prep_terminal(meta);
+
+    CYConsoleRemapKeys(emacs_standard_keymap);
+    CYConsoleRemapKeys(emacs_meta_keymap);
+    CYConsoleRemapKeys(emacs_ctlx_keymap);
+    CYConsoleRemapKeys(vi_insertion_keymap);
+    CYConsoleRemapKeys(vi_movement_keymap);
+}
+

 static void Console(CYOptions &options) {
     std::string basedir;
     if (const char *home = getenv("HOME"))
 static void Console(CYOptions &options) {
     std::string basedir;
     if (const char *home = getenv("HOME"))


@@ -441,9 +632,9 @@ static void Console(CYOptions &options) {
 
     rl_completer_word_break_characters = break_;
     rl_attempted_completion_function = &Complete;
 
     rl_completer_word_break_characters = break_;
     rl_attempted_completion_function = &Complete;

-    rl_bind_key('\t', rl_complete);

 
     rl_redisplay_function = CYDisplayUpdate;
 
     rl_redisplay_function = CYDisplayUpdate;

+    rl_prep_term_function = CYConsolePrepTerm;

 
     struct sigaction action;
     sigemptyset(&action.sa_mask);
 
     struct sigaction action;
     sigemptyset(&action.sa_mask);


@@ -458,10 +649,13 @@ static void Console(CYOptions &options) {
             continue;
         }
 
             continue;
         }
 

-        if (bypass)
+        if (bypass) {

             rl_bind_key('\r', &rl_newline);
             rl_bind_key('\r', &rl_newline);

-        else
+            rl_bind_key('\n', &rl_newline);
+        } else {

             rl_bind_key('\r', &CYConsoleKeyReturn);
             rl_bind_key('\r', &CYConsoleKeyReturn);

+            rl_bind_key('\n', &CYConsoleKeyReturn);
+        }

 
         mode_ = Parsing;
         char *line(readline("cy# "));
 
         mode_ = Parsing;
         char *line(readline("cy# "));


@@ -474,11 +668,9 @@ static void Console(CYOptions &options) {
 
         std::string command(line);
         free(line);
 
         std::string command(line);
         free(line);

-        _assert(!command.empty());
-        _assert(command[command.size() - 1] == '\n');
-        command.resize(command.size() - 1);

         if (command.empty())
             continue;
         if (command.empty())
             continue;

+        history += command;

 
         if (command[0] == '?') {
             std::string data(command.substr(1));
 
         if (command[0] == '?') {
             std::string data(command.substr(1));


@@ -504,15 +696,14 @@ static void Console(CYOptions &options) {
                 *out_ << "lower == " << (lower ? "true" : "false") << std::endl;
             }
 
                 *out_ << "lower == " << (lower ? "true" : "false") << std::endl;
             }
 

-            history += command;

             continue;
         }
 
         std::string code;
         if (bypass)
             code = command;
             continue;
         }
 
         std::string code;
         if (bypass)
             code = command;

-        else {
-            std::istringstream stream(command);
+        else try {
+            std::stringbuf stream(command);

 
             CYPool pool;
             CYDriver driver(pool, stream);
 
             CYPool pool;
             CYDriver driver(pool, stream);


@@ -540,7 +731,6 @@ static void Console(CYOptions &options) {
                     std::cerr << "  | ";
                     std::cerr << error->message_ << std::endl;
 
                     std::cerr << "  | ";
                     std::cerr << error->message_ << std::endl;
 

-                    history += command;

                     break;
                 }
 
                     break;
                 }
 


@@ -555,10 +745,12 @@ static void Console(CYOptions &options) {
             Setup(out, driver, options, lower);
             out << *driver.script_;
             code = str.str();
             Setup(out, driver, options, lower);
             out << *driver.script_;
             code = str.str();

+        } catch (const CYException &error) {
+            CYPool pool;
+            std::cout << error.PoolCString(pool) << std::endl;
+            continue;

         }
 
         }
 

-        history += command;
-

         if (debug) {
             std::cout << "cy= ";
             CYLexerHighlight(code.c_str(), code.size(), std::cout);
         if (debug) {
             std::cout << "cy= ";
             CYLexerHighlight(code.c_str(), code.size(), std::cout);


@@ -897,7 +1089,7 @@ int Main(int argc, char * const argv[], char const * const envp[]) {
                 stream = new std::istringstream(buffer.str());
 
                 CYPool pool;
                 stream = new std::istringstream(buffer.str());
 
                 CYPool pool;

-                CYDriver driver(pool, *stream, script);
+                CYDriver driver(pool, *stream->rdbuf(), script);

                 Setup(driver);
 
                 uint64_t begin(CYGetTime());
                 Setup(driver);
 
                 uint64_t begin(CYGetTime());


@@ -923,7 +1115,7 @@ int Main(int argc, char * const argv[], char const * const envp[]) {
         }
 
         CYPool pool;
         }
 
         CYPool pool;

-        CYDriver driver(pool, *stream, script);
+        CYDriver driver(pool, *stream->rdbuf(), script);

         Setup(driver);
 
         bool failed(driver.Parse());
         Setup(driver);
 
         bool failed(driver.Parse());


@@ -931,6 +1123,7 @@ int Main(int argc, char * const argv[], char const * const envp[]) {
         if (failed || !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;
         if (failed || !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;

+            return 1;

         } else if (driver.script_ != NULL) {
             std::stringbuf str;
             CYOutput out(str, options);
         } else if (driver.script_ != NULL) {
             std::stringbuf str;
             CYOutput out(str, options);