mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-13 02:17:07 +03:00
1848 lines
60 KiB
C
1848 lines
60 KiB
C
/*
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* Copyright (C) 2017 Daniel Morales
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*** Include section ***/
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// We add them above our includes, because the header
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// files we are including use the macros to decide what
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// features to expose. These macros remove some compilation
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// warnings. See
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// https://www.gnu.org/software/libc/manual/html_node/Feature-Test-Macros.html
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// for more info.
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#define _DEFAULT_SOURCE
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#define _BSD_SOURCE
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#define _GNU_SOURCE
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#include <ctype.h>
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#include <errno.h>
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///#include <fcntl.h>
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///#include <signal.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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///#include <sys/ioctl.h>
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///#include <sys/types.h>
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///#include <termios.h>
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#include <time.h>
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///#include <unistd.h>
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#include <conio.h>
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/*** Define section ***/
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// This mimics the Ctrl + whatever behavior, setting the
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// 3 upper bits of the character pressed to 0.
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///#define CTRL_KEY(k) ((k) & 0x1f)
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// Siemargl - set top 4 bits
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#define CTRL_KEY(k) ((k) | 0xf000)
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// Empty buffer
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#define ABUF_INIT {NULL, 0}
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// Version code
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#define TTE_VERSION "0.0.5"
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// Length of a tab stop
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#define TTE_TAB_STOP 4
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// Times to press Ctrl-Q before exiting
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#define TTE_QUIT_TIMES 2
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// Highlight flags
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#define HL_HIGHLIGHT_NUMBERS (1 << 0)
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#define HL_HIGHLIGHT_STRINGS (1 << 1)
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/*** Data section ***/
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// Kolibri defaults
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int con_def_wnd_width = 80;
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int con_def_wnd_height = 25;
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typedef struct editor_row {
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int idx; // Row own index within the file.
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int size; // Size of the content (excluding NULL term)
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int render_size; // Size of the rendered content
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char* chars; // Row content
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char* render; // Row content "rendered" for screen (for TABs).
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unsigned char* highlight; // This will tell you if a character is part of a string, comment, number...
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int hl_open_comment; // True if the line is part of a ML comment.
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} editor_row;
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struct editor_syntax {
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// file_type field is the name of the filetype that will be displayed
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// to the user in the status bar.
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char* file_type;
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// file_match is an array of strings, where each string contains a
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// pattern to match a filename against. If the filename matches,
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// then the file will be recognized as having that filetype.
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char** file_match;
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// This will be a NULL-terminated array of strings, each string containing
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// a keyword. To differentiate between the two types of keywords,
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// we’ll terminate the second type of keywords with a pipe (|)
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// character (also known as a vertical bar).
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char** keywords;
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// We let each language specify its own single-line comment pattern.
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char* singleline_comment_start;
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// flags is a bit field that will contain flags for whether to
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// highlight numbers and whether to highlight strings for that
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// filetype.
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char* multiline_comment_start;
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char* multiline_comment_end;
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int flags;
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};
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struct editor_config {
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int cursor_x;
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int cursor_y;
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int render_x;
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int row_offset; // Offset of row displayed.
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int col_offset; // Offset of col displayed.
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int screen_rows; // Number of rows that we can show
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int screen_cols; // Number of cols that we can show
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int num_rows; // Number of rows
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editor_row* row;
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int dirty; // To know if a file has been modified since opening.
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char* file_name;
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char status_msg[80];
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time_t status_msg_time;
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char* copied_char_buffer;
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struct editor_syntax* syntax;
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/// struct termios orig_termios;
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} ec;
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// Having a dynamic buffer will allow us to write only one
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// time once the screen is refreshing, instead of doing
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// a lot of write's.
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struct a_buf {
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char* buf;
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int len;
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};
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enum editor_key {
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/// BACKSPACE = 0x7f, // 127
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BACKSPACE = 0x3e7, // fixed russian letter
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ARROW_LEFT = 0x3e8, // 1000, large value out of the range of a char.
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ARROW_RIGHT,
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ARROW_UP,
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ARROW_DOWN,
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PAGE_UP,
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PAGE_DOWN,
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HOME_KEY,
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END_KEY,
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DEL_KEY
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};
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enum editor_highlight {
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HL_NORMAL = 0,
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HL_SL_COMMENT,
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HL_ML_COMMENT,
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HL_KEYWORD_1,
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HL_KEYWORD_2,
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HL_STRING,
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HL_NUMBER,
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HL_MATCH
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};
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/*** Filetypes ***/
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char* C_HL_extensions[] = {".c", ".h", ".cpp", ".hpp", ".cc", NULL}; // Array must be terminated with NULL.
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char* JAVA_HL_extensions[] = {".java", NULL};
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char* PYTHON_HL_extensions[] = {".py", NULL};
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char* BASH_HL_extensions[] = {".sh", NULL};
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char* JS_HL_extensions[] = {".js", ".jsx", NULL};
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char* PHP_HL_extensions[] = {".php", NULL};
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char* JSON_HL_extensions[] = {".json", ".jsonp", NULL};
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char* XML_HL_extensions[] = {".xml", NULL};
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char* SQL_HL_extensions[] = {".sql", NULL};
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char* RUBY_HL_extensions[] = {".rb", NULL};
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char* C_HL_keywords[] = {
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"switch", "if", "while", "for", "break", "continue", "return", "else",
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"struct", "union", "typedef", "static", "enum", "class", "case", "#include",
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"volatile", "register", "sizeof", "typedef", "union", "goto", "const", "auto",
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"#define", "#if", "#endif", "#error", "#ifdef", "#ifndef", "#undef",
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"int|", "long|", "double|", "float|", "char|", "unsigned|", "signed|",
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"void|", "bool|", NULL
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};
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char* JAVA_HL_keywords[] = {
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"switch", "if", "while", "for", "break", "continue", "return", "else",
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"in", "public", "private", "protected", "static", "final", "abstract",
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"enum", "class", "case", "try", "catch", "do", "extends", "implements",
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"finally", "import", "instanceof", "interface", "new", "package", "super",
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"native", "strictfp",
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"synchronized", "this", "throw", "throws", "transient", "volatile",
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"byte|", "char|", "double|", "float|", "int|", "long|", "short|",
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"boolean|", NULL
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};
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char* PYTHON_HL_keywords[] = {
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"and", "as", "assert", "break", "class", "continue", "def", "del", "elif",
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"else", "except", "exec", "finally", "for", "from", "global", "if", "import",
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"in", "is", "lambda", "not", "or", "pass", "print", "raise", "return", "try",
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"while", "with", "yield",
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"buffer|", "bytearray|", "complex|", "False|", "float|", "frozenset|", "int|",
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"list|", "long|", "None|", "set|", "str|", "tuple|", "True|", "type|",
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"unicode|", "xrange|", NULL
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};
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char* BASH_HL_keywords[] = {
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"case", "do", "done", "elif", "else", "esac", "fi", "for", "function", "if",
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"in", "select", "then", "time", "until", "while", "alias", "bg", "bind", "break",
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"builtin", "cd", "command", "continue", "declare", "dirs", "disown", "echo",
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"enable", "eval", "exec", "exit", "export", "fc", "fg", "getopts", "hash", "help",
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"history", "jobs", "kill", "let", "local", "logout", "popd", "pushd", "pwd", "read",
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"readonly", "return", "set", "shift", "suspend", "test", "times", "trap", "type",
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"typeset", "ulimit", "umask", "unalias", "unset", "wait", "printf", NULL
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};
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char* JS_HL_keywords[] = {
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"break", "case", "catch", "class", "const", "continue", "debugger", "default",
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"delete", "do", "else", "enum", "export", "extends", "finally", "for", "function",
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||
"if", "implements", "import", "in", "instanceof", "interface", "let", "new",
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"package", "private", "protected", "public", "return", "static", "super", "switch",
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"this", "throw", "try", "typeof", "var", "void", "while", "with", "yield", "true",
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||
"false", "null", "NaN", "global", "window", "prototype", "constructor", "document",
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||
"isNaN", "arguments", "undefined",
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||
"Infinity|", "Array|", "Object|", "Number|", "String|", "Boolean|", "Function|",
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||
"ArrayBuffer|", "DataView|", "Float32Array|", "Float64Array|", "Int8Array|",
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||
"Int16Array|", "Int32Array|", "Uint8Array|", "Uint8ClampedArray|", "Uint32Array|",
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||
"Date|", "Error|", "Map|", "RegExp|", "Symbol|", "WeakMap|", "WeakSet|", "Set|", NULL
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};
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||
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||
char* PHP_HL_keywords[] = {
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"__halt_compiler", "break", "clone", "die", "empty", "endswitch", "final", "global",
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"include_once", "list", "private", "return", "try", "xor", "abstract", "callable",
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"const", "do", "enddeclare", "endwhile", "finally", "goto", "instanceof", "namespace",
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"protected", "static", "unset", "yield", "and", "case", "continue", "echo", "endfor",
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||
"eval", "for", "if", "insteadof", "new", "public", "switch", "use", "array", "catch",
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||
"declare", "else", "endforeach", "exit", "foreach", "implements", "interface", "or",
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||
"require", "throw", "var", "as", "class", "default", "elseif", "endif", "extends",
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"function", "include", "isset", "print", "require_once", "trait", "while", NULL
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};
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||
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char* JSON_HL_keywords[] = {
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NULL
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};
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char* XML_HL_keywords[] = {
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NULL
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};
|
||
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||
char* SQL_HL_keywords[] = {
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||
"SELECT", "FROM", "DROP", "CREATE", "TABLE", "DEFAULT", "FOREIGN", "UPDATE", "LOCK",
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"INSERT", "INTO", "VALUES", "LOCK", "UNLOCK", "WHERE", "DINSTINCT", "BETWEEN", "NOT",
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||
"NULL", "TO", "ON", "ORDER", "GROUP", "IF", "BY", "HAVING", "USING", "UNION", "UNIQUE",
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||
"AUTO_INCREMENT", "LIKE", "WITH", "INNER", "OUTER", "JOIN", "COLUMN", "DATABASE", "EXISTS",
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||
"NATURAL", "LIMIT", "UNSIGNED", "MAX", "MIN", "PRECISION", "ALTER", "DELETE", "CASCADE",
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||
"PRIMARY", "KEY", "CONSTRAINT", "ENGINE", "CHARSET", "REFERENCES", "WRITE",
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||
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||
"BIT|", "TINYINT|", "BOOL|", "BOOLEAN|", "SMALLINT|", "MEDIUMINT|", "INT|", "INTEGER|",
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||
"BIGINT|", "DOUBLE|", "DECIMAL|", "DEC|" "FLOAT|", "DATE|", "DATETIME|", "TIMESTAMP|",
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||
"TIME|", "YEAR|", "CHAR|", "VARCHAR|", "TEXT|", "ENUM|", "SET|", "BLOB|", "VARBINARY|",
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||
"TINYBLOB|", "TINYTEXT|", "MEDIUMBLOB|", "MEDIUMTEXT|", "LONGTEXT|",
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||
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||
"select", "from", "drop", "create", "table", "default", "foreign", "update", "lock",
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||
"insert", "into", "values", "lock", "unlock", "where", "dinstinct", "between", "not",
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||
"null", "to", "on", "order", "group", "if", "by", "having", "using", "union", "unique",
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||
"auto_increment", "like", "with", "inner", "outer", "join", "column", "database", "exists",
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||
"natural", "limit", "unsigned", "max", "min", "precision", "alter", "delete", "cascade",
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"primary", "key", "constraint", "engine", "charset", "references", "write",
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||
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"bit|", "tinyint|", "bool|", "boolean|", "smallint|", "mediumint|", "int|", "integer|",
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"bigint|", "double|", "decimal|", "dec|" "float|", "date|", "datetime|", "timestamp|",
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||
"time|", "year|", "char|", "varchar|", "text|", "enum|", "set|", "blob|", "varbinary|",
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||
"tinyblob|", "tinytext|", "mediumblob|", "mediumtext|", "longtext|", NULL
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||
};
|
||
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||
char* RUBY_HL_keywords[] = {
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"__ENCODING__", "__LINE__", "__FILE__", "BEGIN", "END", "alias", "and", "begin", "break",
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||
"case", "class", "def", "defined?", "do", "else", "elsif", "end", "ensure", "for", "if",
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||
"in", "module", "next", "not", "or", "redo", "rescue", "retry", "return", "self", "super",
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||
"then", "undef", "unless", "until", "when", "while", "yield", NULL
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||
};
|
||
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||
struct editor_syntax HL_DB[] = {
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||
{
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||
"c",
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||
C_HL_extensions,
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C_HL_keywords,
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"//",
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||
"/*",
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||
"*/",
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||
HL_HIGHLIGHT_NUMBERS | HL_HIGHLIGHT_STRINGS
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||
},
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||
{
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||
"java",
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||
JAVA_HL_extensions,
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||
JAVA_HL_keywords,
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||
"//",
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||
"/*",
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||
"*/",
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||
HL_HIGHLIGHT_NUMBERS | HL_HIGHLIGHT_STRINGS
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||
},
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||
{
|
||
"python",
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||
PYTHON_HL_extensions,
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||
PYTHON_HL_keywords,
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||
"#",
|
||
"'''",
|
||
"'''",
|
||
HL_HIGHLIGHT_NUMBERS | HL_HIGHLIGHT_STRINGS
|
||
},
|
||
{
|
||
"bash",
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||
BASH_HL_extensions,
|
||
BASH_HL_keywords,
|
||
"#",
|
||
NULL,
|
||
NULL,
|
||
HL_HIGHLIGHT_NUMBERS | HL_HIGHLIGHT_STRINGS
|
||
},
|
||
{
|
||
"js",
|
||
JS_HL_extensions,
|
||
JS_HL_keywords,
|
||
"//",
|
||
"/*",
|
||
"*/",
|
||
HL_HIGHLIGHT_NUMBERS | HL_HIGHLIGHT_STRINGS
|
||
},
|
||
{
|
||
"php",
|
||
PHP_HL_extensions,
|
||
PHP_HL_keywords,
|
||
"//",
|
||
"/*",
|
||
"*/",
|
||
HL_HIGHLIGHT_NUMBERS | HL_HIGHLIGHT_STRINGS
|
||
},
|
||
{
|
||
"json",
|
||
JSON_HL_extensions,
|
||
JSON_HL_keywords,
|
||
NULL,
|
||
NULL,
|
||
NULL,
|
||
HL_HIGHLIGHT_NUMBERS | HL_HIGHLIGHT_STRINGS
|
||
},
|
||
{
|
||
"xml",
|
||
XML_HL_extensions,
|
||
XML_HL_keywords,
|
||
NULL,
|
||
NULL,
|
||
NULL,
|
||
HL_HIGHLIGHT_NUMBERS | HL_HIGHLIGHT_STRINGS
|
||
},
|
||
{
|
||
"sql",
|
||
SQL_HL_extensions,
|
||
SQL_HL_keywords,
|
||
"--",
|
||
"/*",
|
||
"*/",
|
||
HL_HIGHLIGHT_NUMBERS | HL_HIGHLIGHT_STRINGS
|
||
},
|
||
{
|
||
"ruby",
|
||
RUBY_HL_extensions,
|
||
RUBY_HL_keywords,
|
||
"#",
|
||
"=begin",
|
||
"=end",
|
||
HL_HIGHLIGHT_NUMBERS | HL_HIGHLIGHT_STRINGS
|
||
}
|
||
};
|
||
|
||
// Size of the "Hightlight Database" (HL_DB).
|
||
#define HL_DB_ENTRIES (sizeof(HL_DB) / sizeof(HL_DB[0]))
|
||
|
||
/*** Declarations section ***/
|
||
|
||
void editorClearScreen();
|
||
|
||
void editorRefreshScreen();
|
||
|
||
void editorSetStatusMessage(const char* msg, ...);
|
||
|
||
void consoleBufferOpen();
|
||
|
||
void abufFree();
|
||
|
||
void abufAppend();
|
||
|
||
char *editorPrompt(char* prompt, void (*callback)(char*, int));
|
||
|
||
void editorRowAppendString(editor_row* row, char* s, size_t len);
|
||
|
||
void editorInsertNewline();
|
||
|
||
/*** Terminal section ***/
|
||
|
||
void die(const char* s) {
|
||
editorClearScreen();
|
||
// perror looks for global errno variable and then prints
|
||
// a descriptive error mesage for it.
|
||
perror(s);
|
||
printf("\r\n");
|
||
exit(1);
|
||
}
|
||
|
||
void disableRawMode() {
|
||
/// if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &ec.orig_termios) == -1)
|
||
/// die("Failed to disable raw mode");
|
||
}
|
||
|
||
void enableRawMode() {
|
||
// Save original terminal state into orig_termios.
|
||
/// if (tcgetattr(STDIN_FILENO, &ec.orig_termios) == -1)
|
||
/// die("Failed to get current terminal state");
|
||
// At exit, restore the original state.
|
||
/// atexit(disableRawMode);
|
||
///
|
||
/*
|
||
// Modify the original state to enter in raw mode.
|
||
struct termios raw = ec.orig_termios;
|
||
// This disables Ctrl-M, Ctrl-S and Ctrl-Q commands.
|
||
// (BRKINT, INPCK and ISTRIP are not estrictly mandatory,
|
||
// but it is recommended to turn them off in case any
|
||
// system needs it).
|
||
raw.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
|
||
// Turning off all output processing (\r\n).
|
||
raw.c_oflag &= ~(OPOST);
|
||
// Setting character size to 8 bits per byte (it should be
|
||
// like that on most systems, but whatever).
|
||
raw.c_cflag |= (CS8);
|
||
// Using NOT operator on ECHO | ICANON | IEXTEN | ISIG and
|
||
// then bitwise-AND them with flags field in order to
|
||
// force c_lflag 4th bit to become 0. This disables
|
||
// chars being printed (ECHO) and let us turn off
|
||
// canonical mode in order to read input byte-by-byte
|
||
// instead of line-by-line (ICANON), ISIG disables
|
||
// Ctrl-C command and IEXTEN the Ctrl-V one.
|
||
raw.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
|
||
// read() function now returns as soon as there is any
|
||
// input to be read.
|
||
raw.c_cc[VMIN] = 0;
|
||
// Forcing read() function to return every 1/10 of a
|
||
// second if there is nothing to read.
|
||
raw.c_cc[VTIME] = 1;
|
||
*/
|
||
consoleBufferOpen();
|
||
|
||
/// if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &raw) == -1)
|
||
/// die("Failed to set raw mode");
|
||
}
|
||
|
||
|
||
/*
|
||
int editorReadKey() {
|
||
int nread;
|
||
char c;
|
||
while ((nread = read(STDIN_FILENO, &c, 1)) != 1) {
|
||
// Ignoring EAGAIN to make it work on Cygwin.
|
||
if (nread == -1 && errno != EAGAIN)
|
||
die("Error reading input");
|
||
}
|
||
|
||
// Check escape sequences, if first byte
|
||
// is an escape character then...
|
||
if (c == '\x1b') {
|
||
char seq[3];
|
||
|
||
if (read(STDIN_FILENO, &seq[0], 1) != 1 ||
|
||
read(STDIN_FILENO, &seq[1], 1) != 1)
|
||
return '\x1b';
|
||
|
||
if (seq[0] == '[') {
|
||
if (seq[1] >= '0' && seq[1] <= '9') {
|
||
if (read(STDIN_FILENO, &seq[2], 1) != 1)
|
||
return '\x1b';
|
||
if (seq[2] == '~') {
|
||
switch (seq[1]) {
|
||
// Home and End keys may be sent in many ways depending on the OS
|
||
// \x1b[1~, \x1b[7~, \x1b[4~, \x1b[8~
|
||
case '1':
|
||
case '7':
|
||
return HOME_KEY;
|
||
case '4':
|
||
case '8':
|
||
return END_KEY;
|
||
// Del key is sent as \x1b[3~
|
||
case '3':
|
||
return DEL_KEY;
|
||
// Page Up and Page Down send '\x1b', '[', '5' or '6' and '~'.
|
||
case '5': return PAGE_UP;
|
||
case '6': return PAGE_DOWN;
|
||
}
|
||
}
|
||
} else {
|
||
switch (seq[1]) {
|
||
// Arrow keys send multiple bytes starting with '\x1b', '[''
|
||
// and followed by an 'A', 'B', 'C' or 'D' depending on which
|
||
// arrow is pressed.
|
||
case 'A': return ARROW_UP;
|
||
case 'B': return ARROW_DOWN;
|
||
case 'C': return ARROW_RIGHT;
|
||
case 'D': return ARROW_LEFT;
|
||
// Home key can also be sent as \x1b[H
|
||
case 'H': return HOME_KEY;
|
||
// End key can also be sent as \x1b[F
|
||
case 'F': return END_KEY;
|
||
}
|
||
}
|
||
} else if (seq[0] == 'O') {
|
||
switch (seq[1]) {
|
||
// Yes, Home key can ALSO be sent as \x1bOH
|
||
case 'H': return HOME_KEY;
|
||
// And... End key as \x1bOF
|
||
case 'F': return END_KEY;
|
||
}
|
||
}
|
||
return '\x1b';
|
||
} else {
|
||
return c;
|
||
}
|
||
}
|
||
*/
|
||
/// by Siemargl rewritten, still Ctrl+ combination works only in english locale, so need analyze scancode
|
||
int editorReadKey() {
|
||
int nread;
|
||
int key = con_getch2();
|
||
if (key == 0)
|
||
die("Window closed by X-button");
|
||
|
||
if (0 != (key & 0xff)) {
|
||
key &= 0xff;
|
||
switch (key) {
|
||
case 27: // ESC
|
||
return '\x1b';
|
||
|
||
case 13: // ENTER
|
||
return '\r';
|
||
|
||
case 8: // BACKSPACE
|
||
return BACKSPACE;
|
||
|
||
case 9: // TAB
|
||
return key;
|
||
|
||
case 22: // Ctrl+V
|
||
return CTRL_KEY('v');
|
||
|
||
case 3: // Ctrl+C
|
||
return CTRL_KEY('c');
|
||
|
||
case 12: // Ctrl+L
|
||
return CTRL_KEY('l');
|
||
|
||
case 17: // Ctrl+Q
|
||
return CTRL_KEY('q');
|
||
|
||
case 19: // Ctrl+S
|
||
return CTRL_KEY('s');
|
||
|
||
case 5: // Ctrl+E
|
||
return CTRL_KEY('e');
|
||
|
||
case 4: // Ctrl+D
|
||
return CTRL_KEY('d');
|
||
|
||
case 6: // Ctrl+F
|
||
return CTRL_KEY('f');
|
||
|
||
case 8: // Ctrl+H
|
||
return CTRL_KEY('h');
|
||
|
||
case 24: // Ctrl+X
|
||
return CTRL_KEY('x');
|
||
|
||
default:
|
||
return key;
|
||
|
||
}
|
||
} else {
|
||
key = (key >> 8) & 0xff;
|
||
switch (key) {
|
||
case 83: // Del
|
||
return DEL_KEY;
|
||
|
||
case 75: // Left
|
||
return ARROW_LEFT;
|
||
|
||
case 77: // Right
|
||
return ARROW_RIGHT;
|
||
|
||
case 72: // Up
|
||
return ARROW_UP;
|
||
|
||
case 80: // Down
|
||
return ARROW_DOWN;
|
||
|
||
case 81: // PgDn
|
||
return PAGE_DOWN;
|
||
|
||
case 73: // PgUp
|
||
return PAGE_UP;
|
||
|
||
case 71: // Home
|
||
return HOME_KEY;
|
||
|
||
case 79: // End
|
||
return END_KEY;
|
||
|
||
default:
|
||
return 0;
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
|
||
|
||
|
||
|
||
int getWindowSize(int* screen_rows, int* screen_cols) {
|
||
/// struct winsize ws;
|
||
|
||
// Getting window size thanks to ioctl into the given
|
||
// winsize struct.
|
||
/*
|
||
if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1 || ws.ws_col == 0) {
|
||
return -1;
|
||
} else {
|
||
*screen_cols = ws.ws_col;
|
||
*screen_rows = ws.ws_row;
|
||
return 0;
|
||
}
|
||
*/
|
||
*screen_cols = con_def_wnd_width;
|
||
*screen_rows = con_def_wnd_height;
|
||
}
|
||
|
||
void editorUpdateWindowSize() {
|
||
if (getWindowSize(&ec.screen_rows, &ec.screen_cols) == -1)
|
||
die("Failed to get window size");
|
||
ec.screen_rows -= 2; // Room for the status bar.
|
||
}
|
||
|
||
void editorHandleSigwinch() {
|
||
editorUpdateWindowSize();
|
||
if (ec.cursor_y > ec.screen_rows)
|
||
ec.cursor_y = ec.screen_rows - 1;
|
||
if (ec.cursor_x > ec.screen_cols)
|
||
ec.cursor_x = ec.screen_cols - 1;
|
||
editorRefreshScreen();
|
||
}
|
||
|
||
void editorHandleSigcont() {
|
||
disableRawMode();
|
||
consoleBufferOpen();
|
||
enableRawMode();
|
||
editorRefreshScreen();
|
||
}
|
||
|
||
void consoleBufferOpen() {
|
||
// Switch to another terminal buffer in order to be able to restore state at exit
|
||
// by calling consoleBufferClose().
|
||
/// if (write(STDOUT_FILENO, "\x1b[?47h", 6) == -1)
|
||
/// die("Error changing terminal buffer");
|
||
}
|
||
|
||
void consoleBufferClose() {
|
||
// Restore console to the state tte opened.
|
||
/// if (write(STDOUT_FILENO, "\x1b[?9l", 5) == -1 ||
|
||
/// write(STDOUT_FILENO, "\x1b[?47l", 6) == -1)
|
||
/// die("Error restoring buffer state");
|
||
|
||
/*struct a_buf ab = {.buf = NULL, .len = 0};
|
||
char* buf = NULL;
|
||
if (asprintf(&buf, "\x1b[%d;%dH\r\n", ec.screen_rows + 1, 1) == -1)
|
||
die("Error restoring buffer state");
|
||
abufAppend(&ab, buf, strlen(buf));
|
||
free(buf);
|
||
|
||
if (write(STDOUT_FILENO, ab.buf, ab.len) == -1)
|
||
die("Error restoring buffer state");
|
||
abufFree(&ab);*/
|
||
|
||
editorClearScreen();
|
||
}
|
||
|
||
/*** Syntax highlighting ***/
|
||
|
||
int isSeparator(int c) {
|
||
// strchr() looks to see if any one of the characters in the first string
|
||
// appear in the second string. If so, it returns a pointer to the
|
||
// character in the second string that matched. Otherwise, it
|
||
// returns NULL.
|
||
return isspace(c) || c == '\0' || strchr(",.()+-/*=~%<>[]:;", c) != NULL;
|
||
}
|
||
|
||
int isAlsoNumber(int c) {
|
||
return c == '.' || c == 'x' || c == 'a' || c == 'b' || c == 'c' || c == 'd' || c == 'e' || c == 'f';
|
||
}
|
||
|
||
void editorUpdateSyntax(editor_row* row) {
|
||
row -> highlight = realloc(row -> highlight, row -> render_size);
|
||
// void * memset ( void * ptr, int value, size_t num );
|
||
// Sets the first num bytes of the block of memory pointed by ptr to
|
||
// the specified value. With this we set all characters to HL_NORMAL.
|
||
memset(row -> highlight, HL_NORMAL, row -> render_size);
|
||
|
||
if (ec.syntax == NULL)
|
||
return;
|
||
|
||
char** keywords = ec.syntax -> keywords;
|
||
|
||
char* scs = ec.syntax -> singleline_comment_start;
|
||
char* mcs = ec.syntax -> multiline_comment_start;
|
||
char* mce = ec.syntax -> multiline_comment_end;
|
||
|
||
int scs_len = scs ? strlen(scs) : 0;
|
||
int mcs_len = mcs ? strlen(mcs) : 0;
|
||
int mce_len = mce ? strlen(mce) : 0;
|
||
|
||
int prev_sep = 1; // True (1) if the previous char is a separator, false otherwise.
|
||
int in_string = 0; // If != 0, inside a string. We also keep track if it's ' or "
|
||
int in_comment = (row -> idx > 0 && ec.row[row -> idx - 1].hl_open_comment); // This is ONLY used on ML comments.
|
||
|
||
int i = 0;
|
||
while (i < row -> render_size) {
|
||
char c = row -> render[i];
|
||
// Highlight type of the previous character.
|
||
unsigned char prev_highlight = (i > 0) ? row -> highlight[i - 1] : HL_NORMAL;
|
||
|
||
if (scs_len && !in_string && !in_comment) {
|
||
// int strncmp ( const char * str1, const char * str2, size_t num );
|
||
// Compares up to num characters of the C string str1 to those of the C string str2.
|
||
// This function starts comparing the first character of each string. If they are
|
||
// equal to each other, it continues with the following pairs until the characters
|
||
// differ, until a terminating null-character is reached, or until num characters
|
||
// match in both strings, whichever happens first.
|
||
if (!strncmp(&row -> render[i], scs, scs_len)) {
|
||
memset(&row -> highlight[i], HL_SL_COMMENT, row -> render_size - i);
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (mcs_len && mce_len && !in_string) {
|
||
if (in_comment) {
|
||
row -> highlight[i] = HL_ML_COMMENT;
|
||
if (!strncmp(&row -> render[i], mce, mce_len)) {
|
||
memset(&row -> highlight[i], HL_ML_COMMENT, mce_len);
|
||
i += mce_len;
|
||
in_comment = 0;
|
||
prev_sep = 1;
|
||
continue;
|
||
} else {
|
||
i++;
|
||
continue;
|
||
}
|
||
} else if (!strncmp(&row -> render[i], mcs, mcs_len)) {
|
||
memset(&row -> highlight[i], HL_ML_COMMENT, mcs_len);
|
||
i += mcs_len;
|
||
in_comment = 1;
|
||
continue;
|
||
}
|
||
|
||
}
|
||
|
||
if (ec.syntax -> flags & HL_HIGHLIGHT_STRINGS) {
|
||
if (in_string) {
|
||
row -> highlight[i] = HL_STRING;
|
||
// If we’re in a string and the current character is a backslash (\),
|
||
// and there’s at least one more character in that line that comes
|
||
// after the backslash, then we highlight the character that comes
|
||
// after the backslash with HL_STRING and consume it. We increment
|
||
// i by 2 to consume both characters at once.
|
||
if (c == '\\' && i + 1 < row -> render_size) {
|
||
row -> highlight[i + 1] = HL_STRING;
|
||
i += 2;
|
||
continue;
|
||
}
|
||
|
||
if (c == in_string)
|
||
in_string = 0;
|
||
i++;
|
||
prev_sep = 1;
|
||
continue;
|
||
} else {
|
||
if (c == '"' || c == '\'') {
|
||
in_string = c;
|
||
row -> highlight[i] = HL_STRING;
|
||
i++;
|
||
continue;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (ec.syntax -> flags & HL_HIGHLIGHT_NUMBERS) {
|
||
if ((isdigit(c) && (prev_sep || prev_highlight == HL_NUMBER)) ||
|
||
(isAlsoNumber(c) && prev_highlight == HL_NUMBER)) {
|
||
row -> highlight[i] = HL_NUMBER;
|
||
i++;
|
||
prev_sep = 0;
|
||
continue;
|
||
}
|
||
}
|
||
|
||
if (prev_sep) {
|
||
int j;
|
||
for (j = 0; keywords[j]; j++) {
|
||
int kw_len = strlen(keywords[j]);
|
||
int kw_2 = keywords[j][kw_len - 1] == '|';
|
||
if (kw_2)
|
||
kw_len--;
|
||
|
||
// Keywords require a separator both before and after the keyword.
|
||
if (!strncmp(&row -> render[i], keywords[j], kw_len) &&
|
||
isSeparator(row -> render[i + kw_len])) {
|
||
memset(&row -> highlight[i], kw_2 ? HL_KEYWORD_2 : HL_KEYWORD_1, kw_len);
|
||
i += kw_len;
|
||
break;
|
||
}
|
||
}
|
||
if (keywords[j] != NULL) {
|
||
prev_sep = 0;
|
||
continue;
|
||
}
|
||
}
|
||
|
||
prev_sep = isSeparator(c);
|
||
i++;
|
||
}
|
||
|
||
int changed = (row -> hl_open_comment != in_comment);
|
||
// This tells us whether the row ended as an unclosed multi-line
|
||
// comment or not.
|
||
row -> hl_open_comment = in_comment;
|
||
// A user could comment out an entire file just by changing one line.
|
||
// So it seems like we need to update the syntax of all the lines
|
||
// following the current line. However, we know the highlighting
|
||
// of the next line will not change if the value of this line’s
|
||
// // // hl_open_comment did not change. So we check if it changed, and
|
||
// // only call editorUpdateSyntax() on the next line if
|
||
// hl_open_comment changed (and if there is a next line in the file).
|
||
// Because editorUpdateSyntax() keeps calling itself with the next
|
||
// line, the change will continue to propagate to more and more lines
|
||
// until one of them is unchanged, at which point we know that all
|
||
// the lines after that one must be unchanged as well.
|
||
if (changed && row -> idx + 1 < ec.num_rows)
|
||
editorUpdateSyntax(&ec.row[row -> idx + 1]);
|
||
}
|
||
|
||
int editorSyntaxToColor(int highlight) {
|
||
// We return ANSI codes for colors.
|
||
// See https://en.wikipedia.org/wiki/ANSI_escape_code#Colors
|
||
// for a list of them.
|
||
switch (highlight) {
|
||
case HL_SL_COMMENT:
|
||
case HL_ML_COMMENT: return 36;
|
||
case HL_KEYWORD_1: return 31;
|
||
case HL_KEYWORD_2: return 32;
|
||
case HL_STRING: return 33;
|
||
case HL_NUMBER: return 35;
|
||
case HL_MATCH: return 34;
|
||
default: return 37;
|
||
}
|
||
}
|
||
|
||
void editorSelectSyntaxHighlight() {
|
||
ec.syntax = NULL;
|
||
if (ec.file_name == NULL)
|
||
return;
|
||
|
||
for (unsigned int j = 0; j < HL_DB_ENTRIES; j++) {
|
||
struct editor_syntax* es = &HL_DB[j];
|
||
unsigned int i = 0;
|
||
|
||
while (es -> file_match[i]) {
|
||
char* p = strstr(ec.file_name, es -> file_match[i]);
|
||
if (p != NULL) {
|
||
// Returns a pointer to the first occurrence of str2 in str1,
|
||
// or a null pointer if str2 is not part of str1.
|
||
int pat_len = strlen(es -> file_match[i]);
|
||
if (es -> file_match[i][0] != '.' || p[pat_len] == '\0') {
|
||
ec.syntax = es;
|
||
|
||
int file_row;
|
||
for (file_row = 0; file_row < ec.num_rows; file_row++) {
|
||
editorUpdateSyntax(&ec.row[file_row]);
|
||
}
|
||
|
||
return;
|
||
}
|
||
}
|
||
i++;
|
||
}
|
||
}
|
||
}
|
||
|
||
/*** Row operations ***/
|
||
|
||
int editorRowCursorXToRenderX(editor_row* row, int cursor_x) {
|
||
int render_x = 0;
|
||
int j;
|
||
// For each character, if its a tab we use rx % TTE_TAB_STOP
|
||
// to find out how many columns we are to the right of the last
|
||
// tab stop, and then subtract that from TTE_TAB_STOP - 1 to
|
||
// find out how many columns we are to the left of the next tab
|
||
// stop. We add that amount to rx to get just to the left of the
|
||
// next tab stop, and then the unconditional rx++ statement gets
|
||
// us right on the next tab stop. Notice how this works even if
|
||
// we are currently on a tab stop.
|
||
for (j = 0; j < cursor_x; j++) {
|
||
if (row -> chars[j] == '\t')
|
||
render_x += (TTE_TAB_STOP - 1) - (render_x % TTE_TAB_STOP);
|
||
render_x++;
|
||
}
|
||
return render_x;
|
||
}
|
||
|
||
int editorRowRenderXToCursorX(editor_row* row, int render_x) {
|
||
int cur_render_x = 0;
|
||
int cursor_x;
|
||
for (cursor_x = 0; cursor_x < row -> size; cursor_x++) {
|
||
if (row -> chars[cursor_x] == '\t')
|
||
cur_render_x += (TTE_TAB_STOP - 1) - (cur_render_x % TTE_TAB_STOP);
|
||
cur_render_x++;
|
||
|
||
if (cur_render_x > render_x)
|
||
return cursor_x;
|
||
}
|
||
return cursor_x;
|
||
}
|
||
|
||
void editorUpdateRow(editor_row* row) {
|
||
// First, we have to loop through the chars of the row
|
||
// and count the tabs in order to know how much memory
|
||
// to allocate for render. The maximum number of characters
|
||
// needed for each tab is 8. row->size already counts 1 for
|
||
// each tab, so we multiply the number of tabs by 7 and add
|
||
// that to row->size to get the maximum amount of memory we'll
|
||
// need for the rendered row.
|
||
int tabs = 0;
|
||
int j;
|
||
for (j = 0; j < row -> size; j++) {
|
||
if (row -> chars[j] == '\t')
|
||
tabs++;
|
||
}
|
||
free(row -> render);
|
||
row -> render = malloc(row -> size + tabs * (TTE_TAB_STOP - 1) + 1);
|
||
|
||
// After allocating the memory, we check whether the current character
|
||
// is a tab. If it is, we append one space (because each tab must
|
||
// advance the cursor forward at least one column), and then append
|
||
// spaces until we get to a tab stop, which is a column that is
|
||
// divisible by 8
|
||
int idx = 0;
|
||
for (j = 0; j < row -> size; j++) {
|
||
if (row -> chars[j] == '\t') {
|
||
row -> render[idx++] = ' ';
|
||
while (idx % TTE_TAB_STOP != 0)
|
||
row -> render[idx++] = ' ';
|
||
} else
|
||
row -> render[idx++] = row -> chars[j];
|
||
}
|
||
row -> render[idx] = '\0';
|
||
row -> render_size = idx;
|
||
|
||
editorUpdateSyntax(row);
|
||
}
|
||
|
||
void editorInsertRow(int at, char* s, size_t line_len) {
|
||
if (at < 0 || at > ec.num_rows)
|
||
return;
|
||
|
||
ec.row = realloc(ec.row, sizeof(editor_row) * (ec.num_rows + 1));
|
||
memmove(&ec.row[at + 1], &ec.row[at], sizeof(editor_row) * (ec.num_rows - at));
|
||
|
||
for (int j = at + 1; j <= ec.num_rows; j++) {
|
||
ec.row[j].idx++;
|
||
}
|
||
|
||
ec.row[at].idx = at;
|
||
|
||
ec.row[at].size = line_len;
|
||
ec.row[at].chars = malloc(line_len + 1); // We want to add terminator char '\0' at the end
|
||
memcpy(ec.row[at].chars, s, line_len);
|
||
ec.row[at].chars[line_len] = '\0';
|
||
|
||
ec.row[at].render_size = 0;
|
||
ec.row[at].render = NULL;
|
||
ec.row[at].highlight = NULL;
|
||
ec.row[at].hl_open_comment = 0;
|
||
editorUpdateRow(&ec.row[at]);
|
||
|
||
ec.num_rows++;
|
||
ec.dirty++;
|
||
}
|
||
|
||
void editorFreeRow(editor_row* row) {
|
||
free(row -> render);
|
||
free(row -> chars);
|
||
free(row -> highlight);
|
||
}
|
||
|
||
void editorDelRow(int at) {
|
||
if (at < 0 || at >= ec.num_rows)
|
||
return;
|
||
editorFreeRow(&ec.row[at]);
|
||
memmove(&ec.row[at], &ec.row[at + 1], sizeof(editor_row) * (ec.num_rows - at - 1));
|
||
|
||
for (int j = at; j < ec.num_rows - 1; j++) {
|
||
ec.row[j].idx--;
|
||
}
|
||
|
||
ec.num_rows--;
|
||
ec.dirty++;
|
||
}
|
||
|
||
// -1 down, 1 up
|
||
void editorFlipRow(int dir) {
|
||
editor_row c_row = ec.row[ec.cursor_y];
|
||
ec.row[ec.cursor_y] = ec.row[ec.cursor_y - dir];
|
||
ec.row[ec.cursor_y - dir] = c_row;
|
||
|
||
ec.row[ec.cursor_y].idx += dir;
|
||
ec.row[ec.cursor_y - dir].idx -= dir;
|
||
|
||
int first = (dir == 1) ? ec.cursor_y - 1 : ec.cursor_y;
|
||
editorUpdateSyntax(&ec.row[first]);
|
||
editorUpdateSyntax(&ec.row[first] + 1);
|
||
if (ec.num_rows - ec.cursor_y > 2)
|
||
editorUpdateSyntax(&ec.row[first] + 2);
|
||
|
||
ec.cursor_y -= dir;
|
||
ec.dirty++;
|
||
}
|
||
|
||
void editorCopy(int cut) {
|
||
ec.copied_char_buffer = realloc(ec.copied_char_buffer, strlen(ec.row[ec.cursor_y].chars) + 1);
|
||
strcpy(ec.copied_char_buffer, ec.row[ec.cursor_y].chars);
|
||
editorSetStatusMessage(cut ? "Content cut" : "Content copied");
|
||
}
|
||
|
||
void editorCut() {
|
||
editorCopy(-1);
|
||
editorDelRow(ec.cursor_y);
|
||
if (ec.num_rows - ec.cursor_y > 0)
|
||
editorUpdateSyntax(&ec.row[ec.cursor_y]);
|
||
if (ec.num_rows - ec.cursor_y > 1)
|
||
editorUpdateSyntax(&ec.row[ec.cursor_y + 1]);
|
||
ec.cursor_x = ec.cursor_y == ec.num_rows ? 0 : ec.row[ec.cursor_y].size;
|
||
}
|
||
|
||
void editorPaste() {
|
||
if (ec.copied_char_buffer == NULL)
|
||
return;
|
||
|
||
if (ec.cursor_y == ec.num_rows)
|
||
editorInsertRow(ec.cursor_y, ec.copied_char_buffer, strlen(ec.copied_char_buffer));
|
||
else
|
||
editorRowAppendString(&ec.row[ec.cursor_y], ec.copied_char_buffer, strlen(ec.copied_char_buffer));
|
||
ec.cursor_x += strlen(ec.copied_char_buffer);
|
||
}
|
||
|
||
void editorRowInsertChar(editor_row* row, int at, int c) {
|
||
if (at < 0 || at > row -> size)
|
||
at = row -> size;
|
||
// We need to allocate 2 bytes because we also have to make room for
|
||
// the null byte.
|
||
row -> chars = realloc(row -> chars, row -> size + 2);
|
||
// memmove it's like memcpy(), but is safe to use when the source and
|
||
// destination arrays overlap
|
||
memmove(&row -> chars[at + 1], &row -> chars[at], row -> size - at + 1);
|
||
row -> size++;
|
||
row -> chars[at] = c;
|
||
editorUpdateRow(row);
|
||
ec.dirty++; // This way we can see "how dirty" a file is.
|
||
}
|
||
|
||
void editorInsertNewline() {
|
||
// If we're at the beginning of a line, all we have to do is insert
|
||
// a new blank row before the line we're on.
|
||
if (ec.cursor_x == 0) {
|
||
editorInsertRow(ec.cursor_y, "", 0);
|
||
// Otherwise, we have to split the line we're on into two rows.
|
||
} else {
|
||
editor_row* row = &ec.row[ec.cursor_y];
|
||
editorInsertRow(ec.cursor_y + 1, &row -> chars[ec.cursor_x], row -> size - ec.cursor_x);
|
||
row = &ec.row[ec.cursor_y];
|
||
row -> size = ec.cursor_x;
|
||
row -> chars[row -> size] = '\0';
|
||
editorUpdateRow(row);
|
||
}
|
||
ec.cursor_y++;
|
||
ec.cursor_x = 0;
|
||
}
|
||
|
||
void editorRowAppendString(editor_row* row, char* s, size_t len) {
|
||
row -> chars = realloc(row -> chars, row -> size + len + 1);
|
||
memcpy(&row -> chars[row -> size], s, len);
|
||
row -> size += len;
|
||
row -> chars[row -> size] = '\0';
|
||
editorUpdateRow(row);
|
||
ec.dirty++;
|
||
}
|
||
|
||
void editorRowDelChar(editor_row* row, int at) {
|
||
if (at < 0 || at >= row -> size)
|
||
return;
|
||
// Overwriting the deleted character with the characters that come
|
||
// after it.
|
||
memmove(&row -> chars[at], &row -> chars[at + 1], row -> size - at);
|
||
row -> size--;
|
||
editorUpdateRow(row);
|
||
ec.dirty++;
|
||
}
|
||
|
||
/*** Editor operations ***/
|
||
|
||
void editorInsertChar(int c) {
|
||
// If this is true, the cursor is on the tilde line after the end of
|
||
// the file, so we need to append a new row to the file before inserting
|
||
// a character there.
|
||
if (ec.cursor_y == ec.num_rows)
|
||
editorInsertRow(ec.num_rows, "", 0);
|
||
editorRowInsertChar(&ec.row[ec.cursor_y], ec.cursor_x, c);
|
||
ec.cursor_x++; // This way we can see "how dirty" a file is.
|
||
}
|
||
|
||
void editorDelChar() {
|
||
// If the cursor is past the end of the file, there's nothing to delete.
|
||
if (ec.cursor_y == ec.num_rows)
|
||
return;
|
||
// Cursor is at the beginning of a file, there's nothing to delete.
|
||
if (ec.cursor_x == 0 && ec.cursor_y == 0)
|
||
return;
|
||
|
||
editor_row* row = &ec.row[ec.cursor_y];
|
||
if (ec.cursor_x > 0) {
|
||
editorRowDelChar(row, ec.cursor_x - 1);
|
||
ec.cursor_x--;
|
||
// Deleting a line and moving up all the content.
|
||
} else {
|
||
ec.cursor_x = ec.row[ec.cursor_y - 1].size;
|
||
editorRowAppendString(&ec.row[ec.cursor_y -1], row -> chars, row -> size);
|
||
editorDelRow(ec.cursor_y);
|
||
ec.cursor_y--;
|
||
}
|
||
}
|
||
|
||
/*** File I/O ***/
|
||
|
||
char* editorRowsToString(int* buf_len) {
|
||
int total_len = 0;
|
||
int j;
|
||
// Adding up the lengths of each row of text, adding 1
|
||
// to each one for the newline character we'll add to
|
||
// the end of each line.
|
||
for (j = 0; j < ec.num_rows; j++) {
|
||
total_len += ec.row[j].size + 1;
|
||
}
|
||
*buf_len = total_len;
|
||
|
||
char* buf = malloc(total_len);
|
||
char* p = buf;
|
||
// Copying the contents of each row to the end of the
|
||
// buffer, appending a newline character after each
|
||
// row.
|
||
for (j = 0; j < ec.num_rows; j++) {
|
||
memcpy(p, ec.row[j].chars, ec.row[j].size);
|
||
p += ec.row[j].size;
|
||
*p = '\n';
|
||
p++;
|
||
}
|
||
|
||
return buf;
|
||
}
|
||
|
||
extern int getline(char **buf, size_t *bufsiz, FILE *fp);
|
||
|
||
void editorOpen(char* file_name) {
|
||
free(ec.file_name);
|
||
ec.file_name = strdup(file_name);
|
||
|
||
editorSelectSyntaxHighlight();
|
||
|
||
FILE* file = fopen(file_name, "r+");
|
||
if (!file)
|
||
die("Failed to open the file");
|
||
|
||
char* line = NULL;
|
||
// Unsigned int of at least 16 bit.
|
||
size_t line_cap = 0;
|
||
// Bigger than int
|
||
int line_len; ///was ssize_t
|
||
while ((line_len = getline(&line, &line_cap, file)) != -1) {
|
||
// We already know each row represents one line of text, there's no need
|
||
// to keep carriage return and newline characters.
|
||
if (line_len > 0 && (line[line_len - 1] == '\n' || line[line_len - 1] == '\r'))
|
||
line_len--;
|
||
editorInsertRow(ec.num_rows, line, line_len);
|
||
}
|
||
free(line);
|
||
fclose(file);
|
||
ec.dirty = 0;
|
||
}
|
||
|
||
void editorSave() {
|
||
if (ec.file_name == NULL) {
|
||
ec.file_name = editorPrompt("Save as: %s (ESC to cancel)", NULL);
|
||
if (ec.file_name == NULL) {
|
||
editorSetStatusMessage("Save aborted");
|
||
return;
|
||
}
|
||
editorSelectSyntaxHighlight();
|
||
}
|
||
|
||
int len;
|
||
char* buf = editorRowsToString(&len);
|
||
///
|
||
/*
|
||
// We want to create if it doesn't already exist (O_CREAT flag), giving
|
||
// 0644 permissions (the standard ones). O_RDWR stands for reading and
|
||
// writing.
|
||
int fd = open(ec.file_name, O_RDWR | O_CREAT, 0644);
|
||
if (fd != -1) {
|
||
// ftruncate sets the file's size to the specified length.
|
||
if (ftruncate(fd, len) != -1) {
|
||
// Writing the file.
|
||
if (write(fd, buf, len) == len) {
|
||
close(fd);
|
||
free(buf);
|
||
ec.dirty = 0;
|
||
editorSetStatusMessage("%d bytes written to disk", len);
|
||
return;
|
||
}
|
||
}
|
||
close(fd);
|
||
}
|
||
*/
|
||
FILE *fd = fopen(ec.file_name,"w+b");
|
||
if (fd) {
|
||
if (fwrite(buf, 1, len, fd) == len) {
|
||
fclose(fd);
|
||
free(buf);
|
||
ec.dirty = 0;
|
||
editorSetStatusMessage("%d bytes written to disk", len);
|
||
return;
|
||
}
|
||
fclose(fd);
|
||
}
|
||
|
||
free(buf);
|
||
editorSetStatusMessage("Cant's save file. Error occurred: %s", strerror(errno));
|
||
}
|
||
|
||
/*** Search section ***/
|
||
|
||
void editorSearchCallback(char* query, int key) {
|
||
// Index of the row that the last match was on, -1 if there was
|
||
// no last match.
|
||
static int last_match = -1;
|
||
// 1 for searching forward and -1 for searching backwards.
|
||
static int direction = 1;
|
||
|
||
static int saved_highlight_line;
|
||
static char* saved_hightlight = NULL;
|
||
|
||
if (saved_hightlight) {
|
||
memcpy(ec.row[saved_highlight_line].highlight, saved_hightlight, ec.row[saved_highlight_line].render_size);
|
||
free(saved_hightlight);
|
||
saved_hightlight = NULL;
|
||
}
|
||
|
||
// Checking if the user pressed Enter or Escape, in which case
|
||
// they are leaving search mode so we return immediately.
|
||
if (key == '\r' || key == '\x1b') {
|
||
last_match = -1;
|
||
direction = 1;
|
||
return;
|
||
} else if (key == ARROW_RIGHT || key == ARROW_DOWN) {
|
||
direction = 1;
|
||
} else if (key == ARROW_LEFT || key == ARROW_UP) {
|
||
if (last_match == -1) {
|
||
// If nothing matched and the left or up arrow key was pressed
|
||
return;
|
||
}
|
||
direction = -1;
|
||
} else {
|
||
last_match = -1;
|
||
direction = 1;
|
||
}
|
||
|
||
int current = last_match;
|
||
int i;
|
||
for (i = 0; i < ec.num_rows; i++) {
|
||
current += direction;
|
||
if (current == -1)
|
||
current = ec.num_rows - 1;
|
||
else if (current == ec.num_rows)
|
||
current = 0;
|
||
|
||
editor_row* row = &ec.row[current];
|
||
// We use strstr to check if query is a substring of the
|
||
// current row. It returns NULL if there is no match,
|
||
// oterwhise it returns a pointer to the matching substring.
|
||
char* match = strstr(row -> render, query);
|
||
if (match) {
|
||
last_match = current;
|
||
ec.cursor_y = current;
|
||
ec.cursor_x = editorRowRenderXToCursorX(row, match - row -> render);
|
||
// We set this like so to scroll to the bottom of the file so
|
||
// that the next screen refresh will cause the matching line to
|
||
// be at the very top of the screen.
|
||
ec.row_offset = ec.num_rows;
|
||
|
||
saved_highlight_line = current;
|
||
saved_hightlight = malloc(row -> render_size);
|
||
memcpy(saved_hightlight, row -> highlight, row -> render_size);
|
||
memset(&row -> highlight[match - row -> render], HL_MATCH, strlen(query));
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
void editorSearch() {
|
||
int saved_cursor_x = ec.cursor_x;
|
||
int saved_cursor_y = ec.cursor_y;
|
||
int saved_col_offset = ec.col_offset;
|
||
int saved_row_offset = ec.row_offset;
|
||
|
||
char* query = editorPrompt("Search: %s (Use ESC / Enter / Arrows)", editorSearchCallback);
|
||
|
||
if (query) {
|
||
free(query);
|
||
// If query is NULL, that means they pressed Escape, so in that case we
|
||
// restore the cursor previous position.
|
||
} else {
|
||
ec.cursor_x = saved_cursor_x;
|
||
ec.cursor_y = saved_cursor_y;
|
||
ec.col_offset = saved_col_offset;
|
||
ec.row_offset = saved_row_offset;
|
||
}
|
||
}
|
||
|
||
/*** Append buffer section **/
|
||
|
||
void abufAppend(struct a_buf* ab, const char* s, int len) {
|
||
// Using realloc to get a block of free memory that is
|
||
// the size of the current string + the size of the string
|
||
// to be appended.
|
||
char* new = realloc(ab -> buf, ab -> len + len);
|
||
|
||
if (new == NULL)
|
||
return;
|
||
|
||
// Copying the string s at the end of the current data in
|
||
// the buffer.
|
||
memcpy(&new[ab -> len], s, len);
|
||
ab -> buf = new;
|
||
ab -> len += len;
|
||
}
|
||
|
||
void abufFree(struct a_buf* ab) {
|
||
// Deallocating buffer.
|
||
free(ab -> buf);
|
||
}
|
||
|
||
/*** Output section ***/
|
||
|
||
void editorScroll() {
|
||
ec.render_x = 0;
|
||
if (ec.cursor_y < ec.num_rows)
|
||
ec.render_x = editorRowCursorXToRenderX(&ec.row[ec.cursor_y], ec.cursor_x);
|
||
// The first if statement checks if the cursor is above the visible window,
|
||
// and if so, scrolls up to where the cursor is. The second if statement checks
|
||
// if the cursor is past the bottom of the visible window, and contains slightly
|
||
// more complicated arithmetic because ec.row_offset refers to what's at the top
|
||
// of the screen, and we have to get ec.screen_rows involved to talk about what's
|
||
// at the bottom of the screen.
|
||
if (ec.cursor_y < ec.row_offset)
|
||
ec.row_offset = ec.cursor_y;
|
||
if (ec.cursor_y >= ec.row_offset + ec.screen_rows)
|
||
ec.row_offset = ec.cursor_y - ec.screen_rows + 1;
|
||
|
||
if (ec.render_x < ec.col_offset)
|
||
ec.col_offset = ec.render_x;
|
||
if (ec.render_x >= ec.col_offset + ec.screen_cols)
|
||
ec.col_offset = ec.render_x - ec.screen_cols + 1;
|
||
}
|
||
|
||
void editorDrawStatusBar(struct a_buf* ab) {
|
||
// This switches to inverted colors.
|
||
// NOTE:
|
||
// The m command (Select Graphic Rendition) causes the text printed
|
||
// after it to be printed with various possible attributes including
|
||
// bold (1), underscore (4), blink (5), and inverted colors (7). An
|
||
// argument of 0 clears all attributes (the default one). See
|
||
// http://vt100.net/docs/vt100-ug/chapter3.html#SGR for more info.
|
||
abufAppend(ab, "\x1b[7m", 4);
|
||
|
||
char status[80], r_status[80];
|
||
// Showing up to 20 characters of the filename, followed by the number of lines.
|
||
int len = snprintf(status, sizeof(status), " Editing: %.20s %s", ec.file_name ? ec.file_name : "New file", ec.dirty ? "(modified)" : "");
|
||
int col_size = ec.row && ec.cursor_y <= ec.num_rows - 1 ? col_size = ec.row[ec.cursor_y].size : 0;
|
||
int r_len = snprintf(r_status, sizeof(r_status), "%d/%d lines %d/%d cols ", ec.cursor_y + 1 > ec.num_rows ? ec.num_rows : ec.cursor_y + 1, ec.num_rows,
|
||
ec.cursor_x + 1 > col_size ? col_size : ec.cursor_x + 1, col_size);
|
||
if (len > ec.screen_cols)
|
||
len = ec.screen_cols;
|
||
abufAppend(ab, status, len);
|
||
while (len < ec.screen_cols) {
|
||
if (ec.screen_cols - len == r_len) {
|
||
abufAppend(ab, r_status, r_len);
|
||
break;
|
||
} else {
|
||
abufAppend(ab, " ", 1);
|
||
len++;
|
||
}
|
||
}
|
||
// This switches back to normal colors.
|
||
abufAppend(ab, "\x1b[m", 3);
|
||
|
||
abufAppend(ab, "\r\n", 2);
|
||
}
|
||
|
||
void editorDrawMessageBar(struct a_buf *ab) {
|
||
// Clearing the message bar.
|
||
abufAppend(ab, "\x1b[K", 3);
|
||
int msg_len = strlen(ec.status_msg);
|
||
if (msg_len > ec.screen_cols)
|
||
msg_len = ec.screen_cols;
|
||
// We only show the message if its less than 5 secons old, but
|
||
// remember the screen is only being refreshed after each keypress.
|
||
if (msg_len && time(NULL) - ec.status_msg_time < 5)
|
||
abufAppend(ab, ec.status_msg, msg_len);
|
||
}
|
||
|
||
void editorDrawWelcomeMessage(struct a_buf* ab) {
|
||
char welcome[80];
|
||
// Using snprintf to truncate message in case the terminal
|
||
// is too tiny to handle the entire string.
|
||
int welcome_len = snprintf(welcome, sizeof(welcome),
|
||
"tte %s <http://dmoral.es/>", TTE_VERSION);
|
||
if (welcome_len > ec.screen_cols)
|
||
welcome_len = ec.screen_cols;
|
||
// Centering the message.
|
||
int padding = (ec.screen_cols - welcome_len) / 2;
|
||
// Remember that everything != 0 is true.
|
||
if (padding) {
|
||
abufAppend(ab, "~", 1);
|
||
padding--;
|
||
}
|
||
while (padding--)
|
||
abufAppend(ab, " ", 1);
|
||
abufAppend(ab, welcome, welcome_len);
|
||
}
|
||
|
||
// The ... argument makes editorSetStatusMessage() a variadic function,
|
||
// meaning it can take any number of arguments. C's way of dealing with
|
||
// these arguments is by having you call va_start() and va_end() on a
|
||
// // value of type va_list. The last argument before the ... (in this
|
||
// case, msg) must be passed to va_start(), so that the address of
|
||
// the next arguments is known. Then, between the va_start() and
|
||
// va_end() calls, you would call va_arg() and pass it the type of
|
||
// the next argument (which you usually get from the given format
|
||
// string) and it would return the value of that argument. In
|
||
// this case, we pass msg and args to vsnprintf() and it takes care
|
||
// of reading the format string and calling va_arg() to get each
|
||
// argument.
|
||
void editorSetStatusMessage(const char* msg, ...) {
|
||
va_list args;
|
||
va_start(args, msg);
|
||
vsnprintf(ec.status_msg, sizeof(ec.status_msg), msg, args);
|
||
va_end(args);
|
||
ec.status_msg_time = time(NULL);
|
||
}
|
||
|
||
void editorDrawRows(struct a_buf* ab) {
|
||
int y;
|
||
for (y = 0; y < ec.screen_rows; y++) {
|
||
int file_row = y + ec.row_offset;
|
||
if(file_row >= ec.num_rows) {
|
||
if (ec.num_rows == 0 && y == ec.screen_rows / 3)
|
||
editorDrawWelcomeMessage(ab);
|
||
else
|
||
abufAppend(ab, "~", 1);
|
||
} else {
|
||
int len = ec.row[file_row].render_size - ec.col_offset;
|
||
// len can be a negative number, meaning the user scrolled
|
||
// horizontally past the end of the line. In that case, we set
|
||
// len to 0 so that nothing is displayed on that line.
|
||
if (len < 0)
|
||
len = 0;
|
||
if (len > ec.screen_cols)
|
||
len = ec.screen_cols;
|
||
|
||
char* c = &ec.row[file_row].render[ec.col_offset];
|
||
unsigned char* highlight = &ec.row[file_row].highlight[ec.col_offset];
|
||
int current_color = -1;
|
||
int j;
|
||
for (j = 0; j < len; j++) {
|
||
// Displaying nonprintable characters as (A-Z, @, and ?).
|
||
if (iscntrl(c[j])) {
|
||
char sym = (c[j] <= 26) ? '@' + c[j] : '?';
|
||
abufAppend(ab, "\x1b[7m", 4);
|
||
abufAppend(ab, &sym, 1);
|
||
abufAppend(ab, "\x1b[m", 3);
|
||
if (current_color != -1) {
|
||
char buf[16];
|
||
int c_len = snprintf(buf, sizeof(buf), "\x1b[%dm", current_color);
|
||
abufAppend(ab, buf, c_len);
|
||
}
|
||
} else if (highlight[j] == HL_NORMAL) {
|
||
if (current_color != -1) {
|
||
abufAppend(ab, "\x1b[39m", 5);
|
||
current_color = -1;
|
||
}
|
||
abufAppend(ab, &c[j], 1);
|
||
} else {
|
||
int color = editorSyntaxToColor(highlight[j]);
|
||
// We only use escape sequence if the new color is different
|
||
// from the last character's color.
|
||
if (color != current_color) {
|
||
current_color = color;
|
||
char buf[16];
|
||
int c_len = snprintf(buf, sizeof(buf), "\x1b[%dm", color);
|
||
abufAppend(ab, buf, c_len);
|
||
}
|
||
|
||
abufAppend(ab, &c[j], 1);
|
||
}
|
||
}
|
||
abufAppend(ab, "\x1b[39m", 5);
|
||
}
|
||
|
||
// Redrawing each line instead of the whole screen.
|
||
abufAppend(ab, "\x1b[K", 3);
|
||
// Addind a new line
|
||
abufAppend(ab, "\r\n", 2);
|
||
}
|
||
}
|
||
|
||
void editorRefreshScreen() {
|
||
editorScroll();
|
||
|
||
struct a_buf ab = ABUF_INIT;
|
||
|
||
// Hiding the cursor while the screen is refreshing.
|
||
// See http://vt100.net/docs/vt100-ug/chapter3.html#S3.3.4
|
||
// for more info.
|
||
abufAppend(&ab, "\x1b[?25l", 6);
|
||
abufAppend(&ab, "\x1b[H", 3);
|
||
|
||
editorDrawRows(&ab);
|
||
editorDrawStatusBar(&ab);
|
||
editorDrawMessageBar(&ab);
|
||
|
||
// Moving the cursor where it should be.
|
||
char buf[32];
|
||
snprintf(buf, sizeof(buf), "\x1b[%d;%dH", (ec.cursor_y - ec.row_offset) + 1, (ec.render_x - ec.col_offset) + 1);
|
||
abufAppend(&ab, buf, strlen(buf));
|
||
|
||
// Showing again the cursor.
|
||
abufAppend(&ab, "\x1b[?25h", 6);
|
||
|
||
// Writing all content at once
|
||
/// write(STDOUT_FILENO, ab.buf, ab.len);
|
||
con_write_string(ab.buf, ab.len);
|
||
abufFree(&ab);
|
||
}
|
||
|
||
void editorClearScreen() {
|
||
// Writing 4 bytes out to the terminal:
|
||
// - (1 byte) \x1b : escape character
|
||
// - (3 bytes) [2J : Clears the entire screen, see
|
||
// http://vt100.net/docs/vt100-ug/chapter3.html#ED
|
||
// for more info.
|
||
/// write(STDOUT_FILENO, "\x1b[2J", 4);
|
||
con_write_string("\x1b[2J", 4);
|
||
|
||
// Writing 3 bytes to reposition the cursor back at
|
||
// the top-left corner, see
|
||
// http://vt100.net/docs/vt100-ug/chapter3.html#CUP
|
||
// for more info.
|
||
/// write(STDOUT_FILENO, "\x1b[H", 3);
|
||
con_write_string("\x1b[H", 3);
|
||
}
|
||
|
||
/*** Input section ***/
|
||
|
||
char* editorPrompt(char* prompt, void (*callback)(char*, int)) {
|
||
size_t buf_size = 128;
|
||
char* buf = malloc(buf_size);
|
||
|
||
size_t buf_len = 0;
|
||
buf[0] = '\0';
|
||
|
||
while (1) {
|
||
editorSetStatusMessage(prompt, buf);
|
||
editorRefreshScreen();
|
||
|
||
int c = editorReadKey();
|
||
if (c == DEL_KEY || c == CTRL_KEY('h') || c == BACKSPACE) {
|
||
if (buf_len != 0)
|
||
buf[--buf_len] = '\0';
|
||
} else if (c == '\x1b') {
|
||
editorSetStatusMessage("");
|
||
if (callback)
|
||
callback(buf, c);
|
||
free(buf);
|
||
return NULL;
|
||
} else if (c == '\r') {
|
||
if (buf_len != 0) {
|
||
editorSetStatusMessage("");
|
||
if (callback)
|
||
callback(buf, c);
|
||
return buf;
|
||
}
|
||
} else if (!iscntrl(c) && isprint(c)) {
|
||
if (buf_len == buf_size - 1) {
|
||
buf_size *= 2;
|
||
buf = realloc(buf, buf_size);
|
||
}
|
||
buf[buf_len++] = c;
|
||
buf[buf_len] = '\0';
|
||
}
|
||
|
||
if (callback)
|
||
callback(buf, c);
|
||
}
|
||
}
|
||
|
||
void editorMoveCursor(int key) {
|
||
editor_row* row = (ec.cursor_y >= ec.num_rows) ? NULL : &ec.row[ec.cursor_y];
|
||
|
||
switch (key) {
|
||
case ARROW_LEFT:
|
||
if (ec.cursor_x != 0)
|
||
ec.cursor_x--;
|
||
// If <- is pressed, move to the end of the previous line
|
||
else if (ec.cursor_y > 0) {
|
||
ec.cursor_y--;
|
||
ec.cursor_x = ec.row[ec.cursor_y].size;
|
||
}
|
||
break;
|
||
case ARROW_RIGHT:
|
||
if (row && ec.cursor_x < row -> size)
|
||
ec.cursor_x++;
|
||
// If -> is pressed, move to the start of the next line
|
||
else if (row && ec.cursor_x == row -> size) {
|
||
ec.cursor_y++;
|
||
ec.cursor_x = 0;
|
||
}
|
||
break;
|
||
case ARROW_UP:
|
||
if (ec.cursor_y != 0)
|
||
ec.cursor_y--;
|
||
break;
|
||
case ARROW_DOWN:
|
||
if (ec.cursor_y < ec.num_rows)
|
||
ec.cursor_y++;
|
||
break;
|
||
}
|
||
|
||
// Move cursor_x if it ends up past the end of the line it's on
|
||
row = (ec.cursor_y >= ec.num_rows) ? NULL : &ec.row[ec.cursor_y];
|
||
int row_len = row ? row -> size : 0;
|
||
if (ec.cursor_x > row_len)
|
||
ec.cursor_x = row_len;
|
||
}
|
||
|
||
void editorProcessKeypress() {
|
||
static int quit_times = TTE_QUIT_TIMES;
|
||
|
||
int c = editorReadKey();
|
||
|
||
switch (c) {
|
||
case '\r': // Enter key
|
||
editorInsertNewline();
|
||
break;
|
||
case CTRL_KEY('q'):
|
||
if (ec.dirty && quit_times > 0) {
|
||
editorSetStatusMessage("Warning! File has unsaved changes. Press Ctrl-Q %d more time%s to quit", quit_times, quit_times > 1 ? "s" : "");
|
||
quit_times--;
|
||
return;
|
||
}
|
||
editorClearScreen();
|
||
consoleBufferClose();
|
||
exit(0);
|
||
break;
|
||
case CTRL_KEY('s'):
|
||
editorSave();
|
||
break;
|
||
case CTRL_KEY('e'):
|
||
if (ec.cursor_y > 0 && ec.cursor_y <= ec.num_rows - 1)
|
||
editorFlipRow(1);
|
||
break;
|
||
case CTRL_KEY('d'):
|
||
if (ec.cursor_y < ec.num_rows - 1)
|
||
editorFlipRow(-1);
|
||
break;
|
||
case CTRL_KEY('x'):
|
||
if (ec.cursor_y < ec.num_rows)
|
||
editorCut();
|
||
break;
|
||
case CTRL_KEY('c'):
|
||
if (ec.cursor_y < ec.num_rows)
|
||
editorCopy(0);
|
||
break;
|
||
case CTRL_KEY('v'):
|
||
editorPaste();
|
||
break;
|
||
/// case CTRL_KEY('p'):
|
||
/// consoleBufferClose();
|
||
/// kill(0, SIGTSTP);
|
||
case ARROW_UP:
|
||
case ARROW_DOWN:
|
||
case ARROW_LEFT:
|
||
case ARROW_RIGHT:
|
||
editorMoveCursor(c);
|
||
break;
|
||
case PAGE_UP:
|
||
case PAGE_DOWN:
|
||
{ // You can't declare variables directly inside a switch statement.
|
||
if (c == PAGE_UP)
|
||
ec.cursor_y = ec.row_offset;
|
||
else if (c == PAGE_DOWN)
|
||
ec.cursor_y = ec.row_offset + ec.screen_rows - 1;
|
||
|
||
int times = ec.screen_rows;
|
||
while (times--)
|
||
editorMoveCursor(c == PAGE_UP ? ARROW_UP : ARROW_DOWN);
|
||
}
|
||
break;
|
||
case HOME_KEY:
|
||
ec.cursor_x = 0;
|
||
break;
|
||
case END_KEY:
|
||
if (ec.cursor_y < ec.num_rows)
|
||
ec.cursor_x = ec.row[ec.cursor_y].size;
|
||
break;
|
||
case CTRL_KEY('f'):
|
||
editorSearch();
|
||
break;
|
||
case BACKSPACE:
|
||
case CTRL_KEY('h'):
|
||
case DEL_KEY:
|
||
if (c == DEL_KEY)
|
||
editorMoveCursor(ARROW_RIGHT);
|
||
editorDelChar();
|
||
break;
|
||
case CTRL_KEY('l'):
|
||
case '\x1b': // Escape key
|
||
break;
|
||
default:
|
||
editorInsertChar(c);
|
||
break;
|
||
}
|
||
|
||
quit_times = TTE_QUIT_TIMES;
|
||
}
|
||
|
||
/*** Init section ***/
|
||
|
||
void initEditor() {
|
||
ec.cursor_x = 0;
|
||
ec.cursor_y = 0;
|
||
ec.render_x = 0;
|
||
ec.row_offset = 0;
|
||
ec.col_offset = 0;
|
||
ec.num_rows = 0;
|
||
ec.row = NULL;
|
||
ec.dirty = 0;
|
||
ec.file_name = NULL;
|
||
ec.status_msg[0] = '\0';
|
||
ec.status_msg_time = 0;
|
||
ec.copied_char_buffer = NULL;
|
||
ec.syntax = NULL;
|
||
|
||
editorUpdateWindowSize();
|
||
// The SIGWINCH signal is sent to a process when its controlling
|
||
// terminal changes its size (a window change).
|
||
/// signal(SIGWINCH, editorHandleSigwinch);
|
||
// The SIGCONT signal instructs the operating system to continue
|
||
// (restart) a process previously paused by the SIGSTOP or SIGTSTP
|
||
// signal.
|
||
/// signal(SIGCONT, editorHandleSigcont);
|
||
}
|
||
|
||
void printHelp() {
|
||
printf("Usage: tte [OPTIONS] [FILE]\n\n");
|
||
printf("\nKEYBINDINGS\n-----------\n\n");
|
||
printf("Keybinding\t\tAction\n\n");
|
||
printf("Ctrl-Q \t\tExit\n");
|
||
printf("Ctrl-S \t\tSave\n");
|
||
printf("Ctrl-F \t\tSearch. Esc, enter and arrows to interact once searching\n");
|
||
printf("Ctrl-E \t\tFlip line upwards\n");
|
||
printf("Ctrl-D \t\tFlip line downwards\n");
|
||
printf("Ctrl-C \t\tCopy line\n");
|
||
printf("Ctrl-X \t\tCut line\n");
|
||
printf("Ctrl-V \t\tPaste line\n");
|
||
/// printf("Ctrl-P \t\tPause tte (type \"fg\" to resume)\n");
|
||
|
||
printf("\n\nOPTIONS\n-------\n\n");
|
||
printf("Option \t\tAction\n\n");
|
||
printf("-h | --help \t\tPrints the help\n");
|
||
printf("-v | --version\t\tPrints the version of tte\n");
|
||
|
||
printf("\n\nFor now, usage of ISO 8859-1 is recommended.\n");
|
||
}
|
||
|
||
// 1 if editor should open, 0 otherwise, -1 if the program should exit
|
||
int handleArgs(int argc, char* argv[]) {
|
||
if (argc == 1)
|
||
return 0;
|
||
|
||
if (argc >= 2) {
|
||
if (strncmp("-h", argv[1], 2) == 0 || strncmp("--help", argv[1], 6) == 0) {
|
||
printHelp();
|
||
return -1;
|
||
} else if(strncmp("-v", argv[1], 2) == 0 || strncmp("--version", argv[1], 9) == 0) {
|
||
printf("tte - version %s\n", TTE_VERSION);
|
||
return -1;
|
||
}
|
||
}
|
||
|
||
return 1;
|
||
}
|
||
|
||
int main(int argc, char* argv[]) {
|
||
if (con_init_console_dll()) return 1; // init fail
|
||
|
||
initEditor();
|
||
int arg_response = handleArgs(argc, argv);
|
||
if (arg_response == 1)
|
||
editorOpen(argv[1]);
|
||
else if (arg_response == -1)
|
||
return 0;
|
||
enableRawMode();
|
||
|
||
editorSetStatusMessage(" Ctrl-Q to quit | Ctrl-S to save | (tte -h | --help for more info)");
|
||
|
||
while (1) {
|
||
editorRefreshScreen();
|
||
editorProcessKeypress();
|
||
}
|
||
|
||
con_exit(0);
|
||
return 0;
|
||
}
|