X-Git-Url: https://git.saurik.com/cycript.git/blobdiff_plain/a7d8b4130acfb550e437d8cf1f6d3d81cb0cf6ee..61c7112146ed7cc27b0a921843efdaaa7878d449:/Console.cpp?ds=sidebyside

diff --git a/Console.cpp b/Console.cpp
index a191fc0..93df749 100644
--- a/Console.cpp
+++ b/Console.cpp
@@ -26,11 +26,10 @@
 #endif
 
 #include <cstdio>
+#include <complex>
 #include <fstream>
 #include <sstream>
 
-#include <setjmp.h>
-
 #ifdef HAVE_READLINE_H
 #include <readline.h>
 #else
@@ -45,6 +44,7 @@
 
 #include <errno.h>
 #include <getopt.h>
+#include <setjmp.h>
 #include <signal.h>
 #include <unistd.h>
 
@@ -54,22 +54,153 @@
 #include <fcntl.h>
 #include <netdb.h>
 
+#include <sys/ioctl.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <sys/un.h>
-#include <pwd.h>
 
 #include <dlfcn.h>
+#include <pwd.h>
+#include <term.h>
 
 #ifdef __APPLE__
 #include <mach/mach_time.h>
 #endif
 
-#include "Display.hpp"
 #include "Driver.hpp"
+#include "Error.hpp"
 #include "Highlight.hpp"
-#include "Replace.hpp"
+#include "Syntax.hpp"
+
+extern "C" int rl_display_fixed;
+extern "C" int _rl_vis_botlin;
+extern "C" int _rl_last_c_pos;
+extern "C" int _rl_last_v_pos;
+
+typedef std::complex<int> CYCursor;
+
+static CYCursor current_;
+static int width_;
+static size_t point_;
+
+unsigned CYDisplayWidth() {
+    struct winsize info;
+    if (ioctl(1, TIOCGWINSZ, &info) != -1)
+        return info.ws_col;
+    return tgetnum(const_cast<char *>("co"));
+}
+
+void CYDisplayOutput_(bool display, const char *&data) {
+    for (;; ++data) {
+        char next(*data);
+        if (next == '\0' || next == CYIgnoreEnd)
+            return;
+        if (display)
+            putchar(next);
+    }
+}
+
+CYCursor CYDisplayOutput(bool display, int width, const char *data, ssize_t offset = 0) {
+    CYCursor point(current_);
+
+    for (;;) {
+        if (offset-- == 0)
+            point = current_;
+        switch (char next = *data++) {
+            case '\0':
+                return point;
+            break;
+
+            case CYIgnoreStart:
+                CYDisplayOutput_(display, data);
+            case CYIgnoreEnd:
+                ++offset;
+            break;
+
+            default:
+                if (display)
+                    putchar(next);
+                current_ += CYCursor(0, 1);
+                if (current_.imag() != width)
+                    break;
+                current_ = CYCursor(current_.real() + 1, 0);
+                if (display)
+                    putp(clr_eos);
+            break;
+
+            case '\n':
+                current_ = CYCursor(current_.real() + 1, 4);
+                if (display) {
+                    putp(clr_eol);
+                    putchar('\n');
+                    putchar(' ');
+                    putchar(' ');
+                    putchar(' ');
+                    putchar(' ');
+                }
+            break;
+
+        }
+    }
+}
+
+void CYDisplayMove_(char *negative, char *positive, int offset) {
+    if (offset < 0)
+        putp(tparm(negative, -offset));
+    else if (offset > 0)
+        putp(tparm(positive, offset));
+}
+
+void CYDisplayMove(CYCursor target) {
+    CYCursor offset(target - current_);
+
+    CYDisplayMove_(parm_up_cursor, parm_down_cursor, offset.real());
+
+    if (char *parm = tparm(column_address, target.imag()))
+        putp(parm);
+    else
+        CYDisplayMove_(parm_left_cursor, parm_right_cursor, offset.imag());
+
+    current_ = target;
+}
+
+void CYDisplayUpdate() {
+    current_ = CYCursor(_rl_last_v_pos, _rl_last_c_pos);
+
+    const char *prompt(rl_display_prompt);
+
+    std::ostringstream stream;
+    CYLexerHighlight(rl_line_buffer, rl_end, stream, true);
+    std::string string(stream.str());
+    const char *buffer(string.c_str());
+
+    int width(CYDisplayWidth());
+    if (width_ != width) {
+        current_ = CYCursor();
+        CYDisplayOutput(false, width, prompt);
+        current_ = CYDisplayOutput(false, width, buffer, point_);
+    }
+
+    CYDisplayMove(CYCursor());
+    CYDisplayOutput(true, width, prompt);
+    CYCursor target(CYDisplayOutput(true, width, stream.str().c_str(), rl_point));
+
+    _rl_vis_botlin = current_.real();
+
+    if (current_.imag() == 0)
+        CYDisplayOutput(true, width, " ");
+    putp(clr_eos);
+
+    CYDisplayMove(target);
+    fflush(stdout);
+
+    _rl_last_v_pos = current_.real();
+    _rl_last_c_pos = current_.imag();
+
+    width_ = width;
+    point_ = rl_point;
+}
 
 static volatile enum {
     Working,
@@ -158,14 +289,7 @@ static CYUTF8String Run(CYPool &pool, int client, const std::string &code) {
 
 static std::ostream *out_;
 
-static void Write(bool syntax, const char *data, size_t size, std::ostream &out) {
-    if (syntax)
-        CYLexerHighlight(data, size, out);
-    else
-        out.write(data, size);
-}
-
-static void Output(bool syntax, CYUTF8String json, std::ostream *out, bool expand = false) {
+static void Output(CYUTF8String json, std::ostream *out, bool expand = false) {
     const char *data(json.data);
     size_t size(json.size);
 
@@ -176,7 +300,7 @@ static void Output(bool syntax, CYUTF8String json, std::ostream *out, bool expan
         data[0] != '@' && data[0] != '"' && data[0] != '\'' ||
         data[0] == '@' && data[1] != '"' && data[1] != '\''
     )
-        Write(syntax, data, size, *out);
+        CYLexerHighlight(data, size, *out);
     else for (size_t i(0); i != size; ++i)
         if (data[i] != '\\')
             *out << data[i];
@@ -198,15 +322,6 @@ static void Output(bool syntax, CYUTF8String json, std::ostream *out, bool expan
     *out << std::endl;
 }
 
-static void Run(int client, bool syntax, const char *data, size_t size, std::ostream *out = NULL, bool expand = false) {
-    CYPool pool;
-    Output(syntax, Run(pool, client, CYUTF8String(data, size)), out, expand);
-}
-
-static void Run(int client, bool syntax, std::string &code, std::ostream *out = NULL, bool expand = false) {
-    Run(client, syntax, code.c_str(), code.size(), out, expand);
-}
-
 int (*append_history$)(int, const char *);
 
 static std::string command_;
@@ -220,7 +335,9 @@ static CYUTF8String Run(CYPool &pool, const std::string &code) {
 static char **Complete(const char *word, int start, int end) {
     rl_attempted_completion_over = ~0;
     std::string line(rl_line_buffer, start);
-    return CYComplete(word, command_ + line, &Run);
+    char **values(CYComplete(word, command_ + line, &Run));
+    mode_ = Parsing;
+    return values;
 }
 
 // need char *, not const char *
@@ -238,9 +355,17 @@ class History {
         histlines_(0)
     {
         read_history(histfile_.c_str());
+
+        for (HIST_ENTRY *history((history_set_pos(0), current_history())); history; history = next_history())
+            for (char *character(history->line); *character; ++character)
+                if (*character == '\x01') *character = '\n';
     }
 
     ~History() {
+        for (HIST_ENTRY *history((history_set_pos(0), current_history())); history; history = next_history())
+            for (char *character(history->line); *character; ++character)
+                if (*character == '\n') *character = '\x01';
+
         if (append_history$ != NULL) {
             int fd(_syscall(open(histfile_.c_str(), O_CREAT | O_WRONLY, 0600)));
             _syscall(close(fd));
@@ -250,12 +375,199 @@ class History {
         }
     }
 
-    void operator +=(const std::string &command) {
+    void operator +=(std::string command) {
         add_history(command.c_str());
         ++histlines_;
     }
 };
 
+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 int CYConsoleKeyBypass(int count, int key) {
+    rl_point = rl_end;
+    rl_insert(count, '\n');
+    return rl_newline(count, key);
+}
+
+static int CYConsoleKeyReturn(int count, int key) {
+    if (rl_point != rl_end) {
+        if (memchr(rl_line_buffer, '\n', rl_end) == NULL)
+            return CYConsoleKeyBypass(count, key);
+
+        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)
+            rl_rubout(adjust, '\b');
+
+        rl_insert(count, '\n');
+        if (adjust != 0)
+            rl_insert(adjust, ' ');
+
+        return 0;
+    }
+
+    rl_insert(count, '\n');
+
+    bool done(false);
+    if (rl_line_buffer[0] == '?')
+        done = true;
+    else {
+        std::string command(rl_line_buffer, rl_end);
+        std::istringstream stream(command);
+
+        size_t last(std::string::npos);
+        for (size_t i(0); i != std::string::npos; i = command.find('\n', i + 1))
+            ++last;
+
+        CYPool pool;
+        CYDriver driver(pool, stream);
+        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)
+                    done = true;
+                break;
+            }
+        else
+            done = true;
+    }
+
+    if (done)
+        return rl_newline(count, key);
+    return 0;
+}
+
+static int CYConsoleKeyUp(int count, int key) {
+    while (count-- != 0) {
+        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;
+    }
+
+    return 0;
+}
+
+static int CYConsoleKeyDown(int count, int key) {
+    while (count-- != 0) {
+        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;
+    return 0;
+}
+
+static int CYConsoleKeyBack(int count, int key) {
+    while (count-- != 0) {
+        char *before(CYmemrchr(rl_line_buffer, '\n', rl_point));
+        if (before == NULL)
+            return rl_rubout(count, key);
+
+        int start(before + 1 - rl_line_buffer);
+        if (start == rl_point) rubout: {
+            rl_rubout(1, key);
+            continue;
+        }
+
+        for (int i(start); i != rl_point; ++i)
+            if (rl_line_buffer[i] != ' ')
+                goto rubout;
+        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;
+    return rl_insert(4 - (rl_point - start) % 4, ' ');
+}
+
+static void CYConsoleRemapBind(rl_command_func_t *from, rl_command_func_t *to) {
+    char **keyseqs(rl_invoking_keyseqs(from));
+    if (keyseqs == NULL)
+        return;
+    for (char **keyseq(keyseqs); *keyseq != NULL; ++keyseq) {
+        rl_bind_keyseq(*keyseq, to);
+        free(*keyseq);
+    }
+    free(keyseqs);
+}
+
+static void CYConsolePrepTerm(int meta) {
+    rl_prep_terminal(meta);
+
+    CYConsoleRemapBind(&rl_beg_of_line, &CYConsoleLineBegin);
+    CYConsoleRemapBind(&rl_end_of_line, &CYConsoleLineEnd);
+    CYConsoleRemapBind(&rl_rubout, &CYConsoleKeyBack);
+}
+
 static void Console(CYOptions &options) {
     std::string basedir;
     if (const char *home = getenv("HOME"))
@@ -281,16 +593,31 @@ static void Console(CYOptions &options) {
     bool debug(false);
     bool expand(false);
     bool lower(true);
-    bool syntax(true);
 
     out_ = &std::cout;
 
-    // rl_completer_word_break_characters is broken in libedit
-    rl_basic_word_break_characters = break_;
-
     rl_completer_word_break_characters = break_;
     rl_attempted_completion_function = &Complete;
-    rl_bind_key('\t', rl_complete);
+
+    rl_bind_key(TAB, &CYConsoleKeyTab);
+
+    rl_redisplay_function = CYDisplayUpdate;
+    rl_prep_term_function = CYConsolePrepTerm;
+
+#if defined (__MSDOS__)
+    rl_bind_keyseq("\033[0A", &CYConsoleKeyUp);
+    rl_bind_keyseq("\033[0D", &CYConsoleKeyDown);
+#endif
+    rl_bind_keyseq("\033[A", &CYConsoleKeyUp);
+    rl_bind_keyseq("\033[B", &CYConsoleKeyDown);
+    rl_bind_keyseq("\033OA", &CYConsoleKeyUp);
+    rl_bind_keyseq("\033OB", &CYConsoleKeyDown);
+#if defined (__MINGW32__)
+    rl_bind_keyseq("\340H", &CYConsoleKeyUp);
+    rl_bind_keyseq("\340P", &CYConsoleKeyDown);
+    rl_bind_keyseq("\\000H", &CYConsoleKeyUp);
+    rl_bind_keyseq("\\000P", &CYConsoleKeyDown);
+#endif
 
     struct sigaction action;
     sigemptyset(&action.sa_mask);
@@ -298,135 +625,107 @@ static void Console(CYOptions &options) {
     action.sa_flags = 0;
     sigaction(SIGINT, &action, NULL);
 
-    restart: for (;;) {
-        command_.clear();
-        std::vector<std::string> lines;
-
-        bool extra(false);
-        const char *prompt("cy# ");
-
+    for (;;) {
         if (setjmp(ctrlc_) != 0) {
             mode_ = Working;
             *out_ << std::endl;
-            goto restart;
+            continue;
         }
 
-      read:
-
-#if RL_READLINE_VERSION >= 0x0600
-        if (syntax)
-            rl_redisplay_function = CYDisplayUpdate;
-        else
-            rl_redisplay_function = rl_redisplay;
-#endif
+        if (bypass) {
+            rl_bind_key('\r', &CYConsoleKeyBypass);
+            rl_bind_key('\n', &CYConsoleKeyBypass);
+        } else {
+            rl_bind_key('\r', &CYConsoleKeyReturn);
+            rl_bind_key('\n', &CYConsoleKeyReturn);
+        }
 
         mode_ = Parsing;
-        char *line(readline(prompt));
+        char *line(readline("cy# "));
         mode_ = Working;
 
         if (line == NULL) {
             *out_ << std::endl;
             break;
-        } else if (line[0] == '\0')
-            goto read;
-
-        if (!extra) {
-            extra = true;
-            if (line[0] == '?') {
-                std::string data(line + 1);
-                if (data == "bypass") {
-                    bypass = !bypass;
-                    *out_ << "bypass == " << (bypass ? "true" : "false") << std::endl;
-                } else if (data == "debug") {
-                    debug = !debug;
-                    *out_ << "debug == " << (debug ? "true" : "false") << std::endl;
-                } else if (data == "destroy") {
-                    CYDestroyContext();
-                } else if (data == "gc") {
-                    *out_ << "collecting... " << std::flush;
-                    CYGarbageCollect(CYGetJSContext());
-                    *out_ << "done." << std::endl;
-                } else if (data == "exit") {
-                    return;
-                } else if (data == "expand") {
-                    expand = !expand;
-                    *out_ << "expand == " << (expand ? "true" : "false") << std::endl;
-                } else if (data == "lower") {
-                    lower = !lower;
-                    *out_ << "lower == " << (lower ? "true" : "false") << std::endl;
-                } else if (data == "syntax") {
-                    syntax = !syntax;
-                    *out_ << "syntax == " << (syntax ? "true" : "false") << std::endl;
-                }
-                command_ = line;
-                history += command_;
-                goto restart;
-            }
         }
 
-        command_ += line;
-        command_ += "\n";
+        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[0] == '?') {
+            std::string data(command.substr(1));
+            if (data == "bypass") {
+                bypass = !bypass;
+                *out_ << "bypass == " << (bypass ? "true" : "false") << std::endl;
+            } else if (data == "debug") {
+                debug = !debug;
+                *out_ << "debug == " << (debug ? "true" : "false") << std::endl;
+            } else if (data == "destroy") {
+                CYDestroyContext();
+            } else if (data == "gc") {
+                *out_ << "collecting... " << std::flush;
+                CYGarbageCollect(CYGetJSContext());
+                *out_ << "done." << std::endl;
+            } else if (data == "exit") {
+                return;
+            } else if (data == "expand") {
+                expand = !expand;
+                *out_ << "expand == " << (expand ? "true" : "false") << std::endl;
+            } else if (data == "lower") {
+                lower = !lower;
+                *out_ << "lower == " << (lower ? "true" : "false") << std::endl;
+            }
 
-        char *begin(line), *end(line + strlen(line));
-        while (char *nl = reinterpret_cast<char *>(memchr(begin, '\n', end - begin))) {
-            *nl = '\0';
-            lines.push_back(begin);
-            begin = nl + 1;
+            history += command;
+            continue;
         }
 
-        lines.push_back(begin);
-
-        free(line);
-
         std::string code;
-
         if (bypass)
-            code = command_;
+            code = command;
         else {
-            std::istringstream stream(command_);
+            std::istringstream stream(command);
 
             CYPool pool;
             CYDriver driver(pool, stream);
             Setup(driver);
 
-            bool failed(driver.Parse());
-
-            if (failed || !driver.errors_.empty()) {
+            if (driver.Parse() || !driver.errors_.empty()) {
                 for (CYDriver::Errors::const_iterator error(driver.errors_.begin()); error != driver.errors_.end(); ++error) {
                     CYPosition begin(error->location_.begin);
-                    if (begin.line != lines.size() + 1 || error->warning_) {
-                        CYPosition end(error->location_.end);
-
-                        if (begin.line != lines.size()) {
-                            std::cerr << "  | ";
-                            std::cerr << lines[begin.line - 1] << std::endl;
-                        }
-
-                        std::cerr << "....";
-                        for (size_t i(0); i != begin.column; ++i)
-                            std::cerr << '.';
-                        if (begin.line != end.line || begin.column == end.column)
-                            std::cerr << '^';
-                        else for (size_t i(0), e(end.column - begin.column); i != e; ++i)
-                            std::cerr << '^';
-                        std::cerr << std::endl;
+                    CYPosition end(error->location_.end);
 
+                    /*if (begin.line != lines2.size()) {
                         std::cerr << "  | ";
-                        std::cerr << error->message_ << std::endl;
-
-                        history += command_.substr(0, command_.size() - 1);
-                        goto restart;
-                    }
+                        std::cerr << lines2[begin.line - 1] << std::endl;
+                    }*/
+
+                    std::cerr << "....";
+                    for (size_t i(0); i != begin.column; ++i)
+                        std::cerr << '.';
+                    if (begin.line != end.line || begin.column == end.column)
+                        std::cerr << '^';
+                    else for (size_t i(0), e(end.column - begin.column); i != e; ++i)
+                        std::cerr << '^';
+                    std::cerr << std::endl;
+
+                    std::cerr << "  | ";
+                    std::cerr << error->message_ << std::endl;
+
+                    history += command;
+                    break;
                 }
 
-                driver.errors_.clear();
-
-                prompt = "cy> ";
-                goto read;
+                continue;
             }
 
             if (driver.script_ == NULL)
-                goto restart;
+                continue;
 
             std::stringbuf str;
             CYOutput out(str, options);
@@ -435,15 +734,16 @@ static void Console(CYOptions &options) {
             code = str.str();
         }
 
-        history += command_.substr(0, command_.size() - 1);
+        history += command;
 
         if (debug) {
             std::cout << "cy= ";
-            Write(syntax, code.c_str(), code.size(), std::cout);
+            CYLexerHighlight(code.c_str(), code.size(), std::cout);
             std::cout << std::endl;
         }
 
-        Run(client_, syntax, code, out_, expand);
+        CYPool pool;
+        Output(Run(pool, client_, code), &std::cout, expand);
     }
 }
 
@@ -816,8 +1116,14 @@ int Main(int argc, char * const argv[], char const * const envp[]) {
             std::string code(str.str());
             if (compile)
                 std::cout << code;
-            else
-                Run(client_, false, code, &std::cout);
+            else {
+                CYUTF8String json(Run(pool, client_, code));
+                if (CYStartsWith(json, "throw ")) {
+                    CYLexerHighlight(json.data, json.size, std::cerr);
+                    std::cerr << std::endl;
+                    return 1;
+                }
+            }
         }
     }