diff options
Diffstat (limited to 'archive/1.vm/termbox')
| -rw-r--r-- | archive/1.vm/termbox/COPYING | 19 | ||||
| -rw-r--r-- | archive/1.vm/termbox/Readme | 2 | ||||
| -rw-r--r-- | archive/1.vm/termbox/bytebuffer.inl | 79 | ||||
| -rw-r--r-- | archive/1.vm/termbox/input.inl | 185 | ||||
| -rw-r--r-- | archive/1.vm/termbox/output.inl | 320 | ||||
| -rw-r--r-- | archive/1.vm/termbox/termbox.c | 397 | ||||
| -rw-r--r-- | archive/1.vm/termbox/termbox.h | 190 | ||||
| -rw-r--r-- | archive/1.vm/termbox/utf8.c | 79 |
8 files changed, 1271 insertions, 0 deletions
diff --git a/archive/1.vm/termbox/COPYING b/archive/1.vm/termbox/COPYING new file mode 100644 index 00000000..e9bb4eac --- /dev/null +++ b/archive/1.vm/termbox/COPYING @@ -0,0 +1,19 @@ +Copyright (C) 2010-2013 nsf <no.smile.face@gmail.com> + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. diff --git a/archive/1.vm/termbox/Readme b/archive/1.vm/termbox/Readme new file mode 100644 index 00000000..d97cae4e --- /dev/null +++ b/archive/1.vm/termbox/Readme @@ -0,0 +1,2 @@ +Fork of https://github.com/nsf/termbox as of 2015-06-05 +git hash 252bef01264a2aeef22ebe5bae0b5893a58947f3 diff --git a/archive/1.vm/termbox/bytebuffer.inl b/archive/1.vm/termbox/bytebuffer.inl new file mode 100644 index 00000000..aae8f073 --- /dev/null +++ b/archive/1.vm/termbox/bytebuffer.inl @@ -0,0 +1,79 @@ +struct bytebuffer { + char *buf; + int len; + int cap; +}; + +static void bytebuffer_reserve(struct bytebuffer *b, int cap) { + if (b->cap >= cap) { + return; + } + + // prefer doubling capacity + if (b->cap * 2 >= cap) { + cap = b->cap * 2; + } + + char *newbuf = malloc(cap); + if (b->len > 0) { + // copy what was there, b->len > 0 assumes b->buf != null + memcpy(newbuf, b->buf, b->len); + } + if (b->buf) { + // in case there was an allocated buffer, free it + free(b->buf); + } + b->buf = newbuf; + b->cap = cap; +} + +static void bytebuffer_init(struct bytebuffer *b, int cap) { + b->cap = 0; + b->len = 0; + b->buf = 0; + + if (cap > 0) { + b->cap = cap; + b->buf = malloc(cap); // just assume malloc works always + } +} + +static void bytebuffer_free(struct bytebuffer *b) { + if (b->buf) + free(b->buf); +} + +static void bytebuffer_clear(struct bytebuffer *b) { + b->len = 0; +} + +static void bytebuffer_append(struct bytebuffer *b, const char *data, int len) { + bytebuffer_reserve(b, b->len + len); + memcpy(b->buf + b->len, data, len); + b->len += len; +} + +static void bytebuffer_puts(struct bytebuffer *b, const char *str) { + bytebuffer_append(b, str, strlen(str)); +} + +static void bytebuffer_resize(struct bytebuffer *b, int len) { + bytebuffer_reserve(b, len); + b->len = len; +} + +static void bytebuffer_flush(struct bytebuffer *b, int fd) { + int yyy = write(fd, b->buf, b->len); + (void) yyy; + bytebuffer_clear(b); +} + +static void bytebuffer_truncate(struct bytebuffer *b, int n) { + if (n <= 0) + return; + if (n > b->len) + n = b->len; + const int nmove = b->len - n; + memmove(b->buf, b->buf+n, nmove); + b->len -= n; +} diff --git a/archive/1.vm/termbox/input.inl b/archive/1.vm/termbox/input.inl new file mode 100644 index 00000000..83b4bb8c --- /dev/null +++ b/archive/1.vm/termbox/input.inl @@ -0,0 +1,185 @@ +// if s1 starts with s2 returns true, else false +// len is the length of s1 +// s2 should be null-terminated +static bool starts_with(const char *s1, int len, const char *s2) +{ + int n = 0; + while (*s2 && n < len) { + if (*s1++ != *s2++) + return false; + n++; + } + return *s2 == 0; +} + +#define FOO(...) { \ + FILE* f = fopen("log", "a+"); \ + fprintf(f, __VA_ARGS__); \ + fclose(f); \ +} + +// convert escape sequence to event, and return consumed bytes on success (failure == 0) +static int parse_escape_seq(struct tb_event *event, const char *buf, int len) +{ + static int parse_attempts = 0; + static const int MAX_PARSE_ATTEMPTS = 2; + +//? int x = 0; +//? FOO("-- %d\n", len); +//? for (x = 0; x < len; ++x) { +//? FOO("%d\n", (unsigned char)buf[x]); +//? } + if (len >= 6 && starts_with(buf, len, "\033[M")) { + + switch (buf[3] & 3) { + case 0: + if (buf[3] == 0x60) + event->key = TB_KEY_MOUSE_WHEEL_UP; + else + event->key = TB_KEY_MOUSE_LEFT; + break; + case 1: + if (buf[3] == 0x61) + event->key = TB_KEY_MOUSE_WHEEL_DOWN; + else + event->key = TB_KEY_MOUSE_MIDDLE; + break; + case 2: + event->key = TB_KEY_MOUSE_RIGHT; + break; + case 3: + event->key = TB_KEY_MOUSE_RELEASE; + break; + default: + parse_attempts = 0; + return -6; + } + event->type = TB_EVENT_MOUSE; // TB_EVENT_KEY by default + + // the coord is 1,1 for upper left + event->x = (uint8_t)buf[4] - 1 - 32; + event->y = (uint8_t)buf[5] - 1 - 32; + + parse_attempts = 0; + return 6; + } + + // it's pretty simple here, find 'starts_with' match and return + // success, else return failure + int i; + for (i = 0; keys[i]; i++) { + if (starts_with(buf, len, keys[i])) { + event->ch = 0; + event->key = 0xFFFF-i; + parse_attempts = 0; + return strlen(keys[i]); + } + } + + if (starts_with(buf, len, "\033[200~")) { + event->ch = 0; + event->key = TB_KEY_START_PASTE; + parse_attempts = 0; + return strlen("\033[200~"); + } + if (starts_with(buf, len, "\033[201~")) { + event->ch = 0; + event->key = TB_KEY_END_PASTE; + parse_attempts = 0; + return strlen("\033[201~"); + } + if (starts_with(buf, len, "\033[1;5A")) { + event->ch = 0; + event->key = TB_KEY_CTRL_ARROW_UP; + parse_attempts = 0; + return strlen("\033[1;5A"); + } + if (starts_with(buf, len, "\033[1;5B")) { + event->ch = 0; + event->key = TB_KEY_CTRL_ARROW_DOWN; + parse_attempts = 0; + return strlen("\033[1;5B"); + } + if (starts_with(buf, len, "\033[1;5C")) { + event->ch = 0; + event->key = TB_KEY_CTRL_ARROW_RIGHT; + parse_attempts = 0; + return strlen("\033[1;5C"); + } + if (starts_with(buf, len, "\033[1;5D")) { + event->ch = 0; + event->key = TB_KEY_CTRL_ARROW_LEFT; + parse_attempts = 0; + return strlen("\033[1;5D"); + } + if (starts_with(buf, len, "\033[Z")) { + event->ch = 0; + event->key = TB_KEY_SHIFT_TAB; + parse_attempts = 0; + return strlen("\033[Z"); + } + + // no escape sequence recognized? wait a bit in case our buffer is incomplete + ++parse_attempts; + if (parse_attempts < MAX_PARSE_ATTEMPTS) return 0; + // still nothing? give up and consume just the esc + event->ch = 0; + event->key = TB_KEY_ESC; + parse_attempts = 0; + return 1; +} + +static bool extract_event(struct tb_event *event, struct bytebuffer *inbuf) +{ + const char *buf = inbuf->buf; + const int len = inbuf->len; + if (len == 0) + return false; + +//? int x = 0; +//? FOO("== %d\n", len); +//? for (x = 0; x < len; ++x) { +//? FOO("%x\n", (unsigned char)buf[x]); +//? } + if (buf[0] == '\033') { + int n = parse_escape_seq(event, buf, len); + if (n == 0) return false; +//? FOO("parsed: %u %u %u %u\n", n, (unsigned int)event->type, (unsigned int)event->key, event->ch); + bool success = true; + if (n < 0) { + success = false; + n = -n; + } + bytebuffer_truncate(inbuf, n); + return success; + } + + // if we're here, this is not an escape sequence and not an alt sequence + // so, it's a FUNCTIONAL KEY or a UNICODE character + + // first of all check if it's a functional key + if ((unsigned char)buf[0] <= TB_KEY_SPACE || + (unsigned char)buf[0] == TB_KEY_BACKSPACE2) + { + // fill event, pop buffer, return success */ + event->ch = 0; + event->key = (uint16_t)buf[0]; + bytebuffer_truncate(inbuf, 1); + return true; + } + + // feh... we got utf8 here + + // check if there is all bytes + if (len >= tb_utf8_char_length(buf[0])) { + /* everything ok, fill event, pop buffer, return success */ + tb_utf8_char_to_unicode(&event->ch, buf); + event->key = 0; + bytebuffer_truncate(inbuf, tb_utf8_char_length(buf[0])); + return true; + } + + // event isn't recognized, perhaps there is not enough bytes in utf8 + // sequence + return false; +} diff --git a/archive/1.vm/termbox/output.inl b/archive/1.vm/termbox/output.inl new file mode 100644 index 00000000..d87049ef --- /dev/null +++ b/archive/1.vm/termbox/output.inl @@ -0,0 +1,320 @@ +enum { + T_ENTER_CA, + T_EXIT_CA, + T_SHOW_CURSOR, + T_HIDE_CURSOR, + T_CLEAR_SCREEN, + T_SGR0, + T_UNDERLINE, + T_BOLD, + T_BLINK, + T_REVERSE, + T_ENTER_KEYPAD, + T_EXIT_KEYPAD, + T_ENTER_MOUSE, + T_EXIT_MOUSE, + T_ENTER_BRACKETED_PASTE, + T_EXIT_BRACKETED_PASTE, + T_FUNCS_NUM, +}; + +#define EUNSUPPORTED_TERM -1 + +// rxvt-256color +static const char *rxvt_256color_keys[] = { + "\033[11~", "\033[12~", "\033[13~", "\033[14~", "\033[15~", "\033[17~", "\033[18~", "\033[19~", "\033[20~", "\033[21~", "\033[23~", "\033[24~", "\033[2~", "\033[3~", "\033[7~", "\033[8~", "\033[5~", "\033[6~", "\033[A", "\033[B", "\033[D", "\033[C", 0 +}; +static const char *rxvt_256color_funcs[] = { + "\0337\033[?47h", "\033[2J\033[?47l\0338", "\033[?25h", "\033[?25l", "\033[H\033[2J", "\033[m", "\033[4m", "\033[1m", "\033[5m", "\033[7m", "\033=", "\033>", "\033[?1000h", "\033[?1000l", "\033[?2004h", "\033[?2004l", +}; + +// Eterm +static const char *eterm_keys[] = { + "\033[11~", "\033[12~", "\033[13~", "\033[14~", "\033[15~", "\033[17~", "\033[18~", "\033[19~", "\033[20~", "\033[21~", "\033[23~", "\033[24~", "\033[2~", "\033[3~", "\033[7~", "\033[8~", "\033[5~", "\033[6~", "\033[A", "\033[B", "\033[D", "\033[C", 0 +}; +static const char *eterm_funcs[] = { + "\0337\033[?47h", "\033[2J\033[?47l\0338", "\033[?25h", "\033[?25l", "\033[H\033[2J", "\033[m", "\033[4m", "\033[1m", "\033[5m", "\033[7m", "", "", "", "", "", "", +}; + +// screen +static const char *screen_keys[] = { + "\033OP", "\033OQ", "\033OR", "\033OS", "\033[15~", "\033[17~", "\033[18~", "\033[19~", "\033[20~", "\033[21~", "\033[23~", "\033[24~", "\033[2~", "\033[3~", "\033[1~", "\033[4~", "\033[5~", "\033[6~", "\033OA", "\033OB", "\033OD", "\033OC", 0 +}; +static const char *screen_funcs[] = { + "\033[?1049h", "\033[?1049l", "\033[34h\033[?25h", "\033[?25l", "\033[H\033[J", "\033[m", "\033[4m", "\033[1m", "\033[5m", "\033[7m", "\033[?1h\033=", "\033[?1l\033>", "\033[?1000h", "\033[?1000l", "\033[?2004h", "\033[?2004l", +}; + +// rxvt-unicode +static const char *rxvt_unicode_keys[] = { + "\033[11~", "\033[12~", "\033[13~", "\033[14~", "\033[15~", "\033[17~", "\033[18~", "\033[19~", "\033[20~", "\033[21~", "\033[23~", "\033[24~", "\033[2~", "\033[3~", "\033[7~", "\033[8~", "\033[5~", "\033[6~", "\033[A", "\033[B", "\033[D", "\033[C", 0 +}; +static const char *rxvt_unicode_funcs[] = { + "\033[?1049h", "\033[r\033[?1049l", "\033[?25h", "\033[?25l", "\033[H\033[2J", "\033[m\033(B", "\033[4m", "\033[1m", "\033[5m", "\033[7m", "\033=", "\033>", "\033[?1000h", "\033[?1000l", "\033[?2004h", "\033[?2004l", +}; + +// linux +static const char *linux_keys[] = { + "\033[[A", "\033[[B", "\033[[C", "\033[[D", "\033[[E", "\033[17~", "\033[18~", "\033[19~", "\033[20~", "\033[21~", "\033[23~", "\033[24~", "\033[2~", "\033[3~", "\033[1~", "\033[4~", "\033[5~", "\033[6~", "\033[A", "\033[B", "\033[D", "\033[C", 0 +}; +static const char *linux_funcs[] = { + "", "", "\033[?25h\033[?0c", "\033[?25l\033[?1c", "\033[H\033[J", "\033[0;10m", "\033[4m", "\033[1m", "\033[5m", "\033[7m", "", "", "", "", "", "", +}; + +// xterm +static const char *xterm_keys[] = { + "\033OP", "\033OQ", "\033OR", "\033OS", "\033[15~", "\033[17~", "\033[18~", "\033[19~", "\033[20~", "\033[21~", "\033[23~", "\033[24~", "\033[2~", "\033[3~", "\033OH", "\033OF", "\033[5~", "\033[6~", "\033OA", "\033OB", "\033OD", "\033OC", 0 +}; +static const char *xterm_funcs[] = { + "\033[?1049h", "\033[?1049l", "\033[?12l\033[?25h", "\033[?25l", "\033[H\033[2J", "\033(B\033[m", "\033[4m", "\033[1m", "\033[5m", "\033[7m", "\033[?1h\033=", "\033[?1l\033>", "\033[?1000h", "\033[?1000l", "\033[?2004h", "\033[?2004l", +}; + +static struct term { + const char *name; + const char **keys; + const char **funcs; +} terms[] = { + {"rxvt-256color", rxvt_256color_keys, rxvt_256color_funcs}, + {"Eterm", eterm_keys, eterm_funcs}, + {"screen", screen_keys, screen_funcs}, + {"rxvt-unicode", rxvt_unicode_keys, rxvt_unicode_funcs}, + {"linux", linux_keys, linux_funcs}, + {"xterm", xterm_keys, xterm_funcs}, + {0, 0, 0}, +}; + +static bool init_from_terminfo = false; +static const char **keys; +static const char **funcs; + +static int try_compatible(const char *term, const char *name, + const char **tkeys, const char **tfuncs) +{ + if (strstr(term, name)) { + keys = tkeys; + funcs = tfuncs; + return 0; + } + + return EUNSUPPORTED_TERM; +} + +static int init_term_builtin(void) +{ + int i; + const char *term = getenv("TERM"); + + if (term) { + for (i = 0; terms[i].name; i++) { + if (!strcmp(terms[i].name, term)) { + keys = terms[i].keys; + funcs = terms[i].funcs; + return 0; + } + } + + /* let's do some heuristic, maybe it's a compatible terminal */ + if (try_compatible(term, "xterm", xterm_keys, xterm_funcs) == 0) + return 0; + if (try_compatible(term, "rxvt", rxvt_unicode_keys, rxvt_unicode_funcs) == 0) + return 0; + if (try_compatible(term, "linux", linux_keys, linux_funcs) == 0) + return 0; + if (try_compatible(term, "Eterm", eterm_keys, eterm_funcs) == 0) + return 0; + if (try_compatible(term, "screen", screen_keys, screen_funcs) == 0) + return 0; + /* let's assume that 'cygwin' is xterm compatible */ + if (try_compatible(term, "cygwin", xterm_keys, xterm_funcs) == 0) + return 0; + } + + return EUNSUPPORTED_TERM; +} + +//---------------------------------------------------------------------- +// terminfo +//---------------------------------------------------------------------- + +static char *read_file(const char *file) { + FILE *f = fopen(file, "rb"); + if (!f) + return 0; + + struct stat st; + if (fstat(fileno(f), &st) != 0) { + fclose(f); + return 0; + } + + char *data = malloc(st.st_size); + if (!data) { + fclose(f); + return 0; + } + + if (fread(data, 1, st.st_size, f) != (size_t)st.st_size) { + fclose(f); + free(data); + return 0; + } + + fclose(f); + return data; +} + +static char *terminfo_try_path(const char *path, const char *term) { + char tmp[4096]; + // snprintf guarantee for older compilers + assert(sizeof(tmp) > sizeof(path)+sizeof("/x/")+sizeof(term)+1); + snprintf(tmp, sizeof(tmp), "%s/%c/%s", path, term[0], term); + char *data = read_file(tmp); + if (data) { + return data; + } + + // fallback to darwin specific dirs structure + // snprintf guarantee above still applies + snprintf(tmp, sizeof(tmp), "%s/%x/%s", path, term[0], term); + return read_file(tmp); +} + +void string_copy(char* dest, const char* src, int dest_capacity) { + strncpy(dest, src, dest_capacity); + dest[dest_capacity-1] = '\0'; +} + +void string_append(char* dest, const char* src, int dest_capacity) { + strncat(dest, src, dest_capacity); + dest[dest_capacity-1] = '\0'; +} + +static char *load_terminfo(void) { + char tmp[4096]; + const char *term = getenv("TERM"); + if (!term) { + return 0; + } + + // if TERMINFO is set, no other directory should be searched + const char *terminfo = getenv("TERMINFO"); + if (terminfo) { + return terminfo_try_path(terminfo, term); + } + + // next, consider ~/.terminfo + const char *home = getenv("HOME"); + if (home) { + // snprintf guarantee for older compilers + assert(sizeof(tmp) > sizeof(home)+sizeof("/.terminfo")+1); + string_copy(tmp, home, sizeof(tmp)); + string_append(tmp, "/.terminfo", sizeof(tmp)); + char *data = terminfo_try_path(tmp, term); + if (data) + return data; + } + + // next, TERMINFO_DIRS + const char *dirs = getenv("TERMINFO_DIRS"); + if (dirs) { + // snprintf guarantee for older compilers + assert(sizeof(tmp) > sizeof(dirs)); + strncpy(tmp, dirs, sizeof(tmp)); + char *dir = strtok(tmp, ":"); + while (dir) { + const char *cdir = dir; + if (strcmp(cdir, "") == 0) { + cdir = "/usr/share/terminfo"; + } + char *data = terminfo_try_path(cdir, term); + if (data) + return data; + dir = strtok(0, ":"); + } + } + + // fallback to /usr/share/terminfo + return terminfo_try_path("/usr/share/terminfo", term); +} + +#define TI_MAGIC 0432 +#define TI_HEADER_LENGTH 12 +#define TB_KEYS_NUM 22 + +static const char *terminfo_copy_string(char *data, int str, int table) { + const int16_t off = *(int16_t*)(data + str); + const char *src = data + table + off; + int len = strlen(src); + char *dst = malloc(len+1); + string_copy(dst, src, len+1); + return dst; +} + +static const int16_t ti_funcs[] = { + 28, 40, 16, 13, 5, 39, 36, 27, 26, 34, 89, 88, +}; + +static const int16_t ti_keys[] = { + 66, 68 /* apparently not a typo; 67 is F10 for whatever reason */, 69, + 70, 71, 72, 73, 74, 75, 67, 216, 217, 77, 59, 76, 164, 82, 81, 87, 61, + 79, 83, +}; + +static int init_term(void) { + int i; + char *data = load_terminfo(); + if (!data) { + init_from_terminfo = false; + return init_term_builtin(); + } + + int16_t *header = (int16_t*)data; + if ((header[1] + header[2]) % 2) { + // old quirk to align everything on word boundaries + header[2] += 1; + } + + const int str_offset = TI_HEADER_LENGTH + + header[1] + header[2] + 2 * header[3]; + const int table_offset = str_offset + 2 * header[4]; + + keys = malloc(sizeof(const char*) * (TB_KEYS_NUM+1)); + for (i = 0; i < TB_KEYS_NUM; i++) { + keys[i] = terminfo_copy_string(data, + str_offset + 2 * ti_keys[i], table_offset); + } + keys[TB_KEYS_NUM] = 0; + + funcs = malloc(sizeof(const char*) * T_FUNCS_NUM); + // the last four entries are reserved for mouse, bracketed paste. because the table offset is + // not there, the two entries have to fill in manually + for (i = 0; i < T_FUNCS_NUM-4; i++) { + funcs[i] = terminfo_copy_string(data, + str_offset + 2 * ti_funcs[i], table_offset); + } + + funcs[T_FUNCS_NUM-4] = "\033[?1000h"; + funcs[T_FUNCS_NUM-3] = "\033[?1000l"; + funcs[T_FUNCS_NUM-2] = "\033[?2004h"; + funcs[T_FUNCS_NUM-1] = "\033[?2004l"; + + init_from_terminfo = true; + free(data); + return 0; +} + +static void shutdown_term(void) { + if (init_from_terminfo) { + int i; + for (i = 0; i < TB_KEYS_NUM; i++) { + free((void*)keys[i]); + } + // the last four entries are reserved for mouse, bracketed paste. because the table offset + // is not there, the two entries have to fill in manually and do not + // need to be freed. + for (i = 0; i < T_FUNCS_NUM-4; i++) { + free((void*)funcs[i]); + } + free(keys); + free(funcs); + } +} diff --git a/archive/1.vm/termbox/termbox.c b/archive/1.vm/termbox/termbox.c new file mode 100644 index 00000000..c97f03d5 --- /dev/null +++ b/archive/1.vm/termbox/termbox.c @@ -0,0 +1,397 @@ +#include <assert.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> +#include <fcntl.h> +#include <signal.h> +#include <stdio.h> +#include <stdbool.h> +#include <sys/ioctl.h> +#include <sys/time.h> +#include <sys/stat.h> +#include <termios.h> +#include <unistd.h> +#include <wchar.h> +/* hack: we can't define _XOPEN_SOURCE because that causes OpenBSD to not + * include SIGWINCH. But then this prototype is not included on Linux, + * triggering a warning. */ +extern int wcwidth (wchar_t); + +#include "termbox.h" + +#include "bytebuffer.inl" +#include "output.inl" +#include "input.inl" + +#define LAST_COORD_INIT -1 + +static struct termios orig_tios; + +static struct bytebuffer output_buffer; +static struct bytebuffer input_buffer; + +static int termw = -1; +static int termh = -1; + +static int inout; +static int winch_fds[2]; + +static int cursor_x = 0; +static int cursor_y = 0; + +static uint16_t background = TB_BLACK; +static uint16_t foreground = TB_WHITE; + +static void update_size(void); +static void update_term_size(void); +static void send_attr(uint16_t fg, uint16_t bg); +static void send_clear(void); +static void sigwinch_handler(int xxx); +static int wait_fill_event(struct tb_event *event, struct timeval *timeout); + +/* may happen in a different thread */ +static volatile int buffer_size_change_request; + +/* -------------------------------------------------------- */ + +int tb_init(void) +{ + inout = open("/dev/tty", O_RDWR); + if (inout == -1) { + return TB_EFAILED_TO_OPEN_TTY; + } + + if (init_term() < 0) { + close(inout); + return TB_EUNSUPPORTED_TERMINAL; + } + + if (pipe(winch_fds) < 0) { + close(inout); + return TB_EPIPE_TRAP_ERROR; + } + + struct sigaction sa; + memset(&sa, 0, sizeof(sa)); + sa.sa_handler = sigwinch_handler; + sa.sa_flags = 0; + sigaction(SIGWINCH, &sa, 0); + + tcgetattr(inout, &orig_tios); + + struct termios tios; + memcpy(&tios, &orig_tios, sizeof(tios)); + + tios.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP + | INLCR | IGNCR | ICRNL | IXON); + tios.c_oflag &= ~OPOST; + tios.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN); + tios.c_cflag &= ~(CSIZE | PARENB); + tios.c_cflag |= CS8; + tios.c_cc[VMIN] = 0; + tios.c_cc[VTIME] = 0; + tcsetattr(inout, TCSAFLUSH, &tios); + + bytebuffer_init(&input_buffer, 128); + bytebuffer_init(&output_buffer, 32 * 1024); + + bytebuffer_puts(&output_buffer, funcs[T_ENTER_KEYPAD]); + bytebuffer_puts(&output_buffer, funcs[T_ENTER_MOUSE]); + bytebuffer_puts(&output_buffer, funcs[T_ENTER_BRACKETED_PASTE]); + bytebuffer_flush(&output_buffer, inout); + + update_term_size(); + return 0; +} + +void tb_shutdown(void) +{ + if (termw == -1) return; + + bytebuffer_puts(&output_buffer, funcs[T_SGR0]); + bytebuffer_puts(&output_buffer, funcs[T_EXIT_KEYPAD]); + bytebuffer_puts(&output_buffer, funcs[T_EXIT_MOUSE]); + bytebuffer_puts(&output_buffer, funcs[T_EXIT_BRACKETED_PASTE]); + bytebuffer_flush(&output_buffer, inout); + tcsetattr(inout, TCSAFLUSH, &orig_tios); + + shutdown_term(); + close(inout); + close(winch_fds[0]); + close(winch_fds[1]); + + bytebuffer_free(&output_buffer); + bytebuffer_free(&input_buffer); + termw = termh = -1; +} + +int tb_is_active(void) +{ + return termw != -1; +} + +void tb_print(uint32_t ch, uint16_t fg, uint16_t bg) +{ + assert(termw != -1); + send_attr(fg, bg); + if (ch == 0) { + // replace 0 with whitespace + bytebuffer_puts(&output_buffer, " "); + } + else { + char buf[7]; + int bw = tb_utf8_unicode_to_char(buf, ch); + buf[bw] = '\0'; + bytebuffer_puts(&output_buffer, buf); + } + bytebuffer_flush(&output_buffer, inout); +} + +int tb_poll_event(struct tb_event *event) +{ + assert(termw != -1); + return wait_fill_event(event, 0); +} + +int tb_peek_event(struct tb_event *event, int timeout) +{ + struct timeval tv; + tv.tv_sec = timeout / 1000; + tv.tv_usec = (timeout - (tv.tv_sec * 1000)) * 1000; + assert(termw != -1); + return wait_fill_event(event, &tv); +} + +int tb_width(void) +{ + assert(termw != -1); + return termw; +} + +int tb_height(void) +{ + assert(termw != -1); + return termh; +} + +void tb_clear(void) +{ + assert(termw != -1); + if (buffer_size_change_request) { + update_size(); + buffer_size_change_request = 0; + } + send_clear(); +} + +void tb_set_clear_attributes(uint16_t fg, uint16_t bg) +{ + assert(termw != -1); + foreground = fg; + background = bg; +} + +/* -------------------------------------------------------- */ + +static int convertnum(uint32_t num, char* buf) { + int i, l = 0; + int ch; + do { + buf[l++] = '0' + (num % 10); + num /= 10; + } while (num); + for(i = 0; i < l / 2; i++) { + ch = buf[i]; + buf[i] = buf[l - 1 - i]; + buf[l - 1 - i] = ch; + } + return l; +} + +#define WRITE_LITERAL(X) bytebuffer_append(&output_buffer, (X), sizeof(X)-1) +#define WRITE_INT(X) bytebuffer_append(&output_buffer, buf, convertnum((X), buf)) + +void tb_set_cursor(int x, int y) { + char buf[32]; + WRITE_LITERAL("\033["); + WRITE_INT(y+1); + WRITE_LITERAL(";"); + WRITE_INT(x+1); + WRITE_LITERAL("H"); + bytebuffer_flush(&output_buffer, inout); +} + +static void get_term_size(int *w, int *h) +{ + struct winsize sz; + memset(&sz, 0, sizeof(sz)); + + ioctl(inout, TIOCGWINSZ, &sz); + + if (w) *w = sz.ws_col; + if (h) *h = sz.ws_row; +} + +static void update_term_size(void) +{ + struct winsize sz; + memset(&sz, 0, sizeof(sz)); + + ioctl(inout, TIOCGWINSZ, &sz); + + termw = sz.ws_col; + termh = sz.ws_row; +} + +static void send_attr(uint16_t fg, uint16_t bg) +{ +#define LAST_ATTR_INIT 0xFFFF + static uint16_t lastfg = LAST_ATTR_INIT, lastbg = LAST_ATTR_INIT; + if (fg != lastfg || bg != lastbg) { + bytebuffer_puts(&output_buffer, funcs[T_SGR0]); + + uint16_t fgcol = fg & 0xFF; + uint16_t bgcol = bg & 0xFF; + + if (fg & TB_BOLD) + bytebuffer_puts(&output_buffer, funcs[T_BOLD]); + if (bg & TB_BOLD) + bytebuffer_puts(&output_buffer, funcs[T_BLINK]); + if (fg & TB_UNDERLINE) + bytebuffer_puts(&output_buffer, funcs[T_UNDERLINE]); + if ((fg & TB_REVERSE) || (bg & TB_REVERSE)) + bytebuffer_puts(&output_buffer, funcs[T_REVERSE]); + char buf[32]; + WRITE_LITERAL("\033[38;5;"); + WRITE_INT(fgcol); + WRITE_LITERAL("m"); + WRITE_LITERAL("\033[48;5;"); + WRITE_INT(bgcol); + WRITE_LITERAL("m"); + bytebuffer_flush(&output_buffer, inout); + lastfg = fg; + lastbg = bg; + } +} + +const char* to_unicode(uint32_t c) +{ + static char buf[7]; + int bw = tb_utf8_unicode_to_char(buf, c); + buf[bw] = '\0'; + return buf; +} + +static void send_clear(void) +{ + send_attr(foreground, background); + bytebuffer_puts(&output_buffer, funcs[T_CLEAR_SCREEN]); + tb_set_cursor(cursor_x, cursor_y); + bytebuffer_flush(&output_buffer, inout); +} + +static void sigwinch_handler(int xxx) +{ + (void) xxx; + const int zzz = 1; + int yyy = write(winch_fds[1], &zzz, sizeof(int)); + (void) yyy; +} + +static void update_size(void) +{ + update_term_size(); + send_clear(); +} + +static int read_up_to(int n) { + assert(n > 0); + const int prevlen = input_buffer.len; + bytebuffer_resize(&input_buffer, prevlen + n); + + int read_n = 0; + while (read_n <= n) { + ssize_t r = 0; + if (read_n < n) { + r = read(inout, input_buffer.buf + prevlen + read_n, n - read_n); + } +#ifdef __CYGWIN__ + // While linux man for tty says when VMIN == 0 && VTIME == 0, read + // should return 0 when there is nothing to read, cygwin's read returns + // -1. Not sure why and if it's correct to ignore it, but let's pretend + // it's zero. + if (r < 0) r = 0; +#endif + if (r < 0) { + // EAGAIN / EWOULDBLOCK shouldn't occur here + assert(errno != EAGAIN && errno != EWOULDBLOCK); + return -1; + } else if (r > 0) { + read_n += r; + } else { + bytebuffer_resize(&input_buffer, prevlen + read_n); + return read_n; + } + } + assert(!"unreachable"); + return 0; +} + +int tb_event_ready(void) +{ + return input_buffer.len > 0; +} + +static int wait_fill_event(struct tb_event *event, struct timeval *timeout) +{ + // ;-) +#define ENOUGH_DATA_FOR_PARSING 64 + fd_set events; + memset(event, 0, sizeof(struct tb_event)); + + // try to extract event from input buffer, return on success + event->type = TB_EVENT_KEY; + if (extract_event(event, &input_buffer)) + return event->type; + + // it looks like input buffer is incomplete, let's try the short path, + // but first make sure there is enough space + int n = read_up_to(ENOUGH_DATA_FOR_PARSING); + if (n < 0) + return -1; + if (n > 0 && extract_event(event, &input_buffer)) + return event->type; + + // n == 0, or not enough data, let's go to select + while (1) { + FD_ZERO(&events); + FD_SET(inout, &events); + FD_SET(winch_fds[0], &events); + int maxfd = (winch_fds[0] > inout) ? winch_fds[0] : inout; + int result = select(maxfd+1, &events, 0, 0, timeout); + if (!result) + return 0; + + if (FD_ISSET(inout, &events)) { + event->type = TB_EVENT_KEY; + n = read_up_to(ENOUGH_DATA_FOR_PARSING); + if (n < 0) + return -1; + + if (n == 0) + continue; + + if (extract_event(event, &input_buffer)) + return event->type; + } + if (FD_ISSET(winch_fds[0], &events)) { + event->type = TB_EVENT_RESIZE; + int zzz = 0; + int yyy = read(winch_fds[0], &zzz, sizeof(int)); + (void) yyy; + buffer_size_change_request = 1; + get_term_size(&event->w, &event->h); + return TB_EVENT_RESIZE; + } + } +} diff --git a/archive/1.vm/termbox/termbox.h b/archive/1.vm/termbox/termbox.h new file mode 100644 index 00000000..43b326cb --- /dev/null +++ b/archive/1.vm/termbox/termbox.h @@ -0,0 +1,190 @@ +#pragma once + +#include <stdint.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/*** 1. Controlling the screen. */ + +/* Names for some foreground/background colors. */ +#define TB_BLACK 232 +#define TB_WHITE 255 + +/* Some attributes of screen cells that can be combined with colors using + * bitwise-OR. */ +#define TB_BOLD 0x0100 +#define TB_UNDERLINE 0x0200 +#define TB_REVERSE 0x0400 + +/* Initialize screen and keyboard. */ +int tb_init(void); +/* Possible error codes returned by tb_init() */ +#define TB_EUNSUPPORTED_TERMINAL -1 +#define TB_EFAILED_TO_OPEN_TTY -2 +/* Termbox uses unix pipes in order to deliver a message from a signal handler + * (SIGWINCH) to the main event reading loop. */ +#define TB_EPIPE_TRAP_ERROR -3 + +/* Restore terminal mode. */ +void tb_shutdown(void); + +int tb_is_active(void); + +/* Size of the screen. Return negative values before tb_init() or after + * tb_shutdown() */ +int tb_width(void); +int tb_height(void); + +/* Clear the screen using either TB_DEFAULT or the color/attributes set by + * tb_set_clear_attributes(). */ +void tb_clear(void); +void tb_set_clear_attributes(uint16_t fg, uint16_t bg); + +/* Move the cursor. Upper-left character is (0, 0). */ +void tb_set_cursor(int cx, int cy); + +/* Modify the screen at the cursor. */ +void tb_print(uint32_t ch, uint16_t fg, uint16_t bg); + +/*** 2. Controlling keyboard events. */ + +struct tb_event { + uint8_t type; + /* fields for type TB_EVENT_KEY. At most one of 'key' and 'ch' will be set at + * any time. */ + uint16_t key; + uint32_t ch; + /* fields for type TB_EVENT_RESIZE */ + int32_t w; + int32_t h; + /* fields for type TB_EVENT_MOUSE */ + int32_t x; + int32_t y; +}; + +/* Possible values for tb_event.type. */ +#define TB_EVENT_KEY 1 +#define TB_EVENT_RESIZE 2 +#define TB_EVENT_MOUSE 3 + +/* Possible values for tb_event.key. */ +#define TB_KEY_F1 (0xFFFF-0) +#define TB_KEY_F2 (0xFFFF-1) +#define TB_KEY_F3 (0xFFFF-2) +#define TB_KEY_F4 (0xFFFF-3) +#define TB_KEY_F5 (0xFFFF-4) +#define TB_KEY_F6 (0xFFFF-5) +#define TB_KEY_F7 (0xFFFF-6) +#define TB_KEY_F8 (0xFFFF-7) +#define TB_KEY_F9 (0xFFFF-8) +#define TB_KEY_F10 (0xFFFF-9) +#define TB_KEY_F11 (0xFFFF-10) +#define TB_KEY_F12 (0xFFFF-11) +#define TB_KEY_INSERT (0xFFFF-12) +#define TB_KEY_DELETE (0xFFFF-13) +#define TB_KEY_HOME (0xFFFF-14) +#define TB_KEY_END (0xFFFF-15) +#define TB_KEY_PGUP (0xFFFF-16) +#define TB_KEY_PGDN (0xFFFF-17) +#define TB_KEY_ARROW_UP (0xFFFF-18) +#define TB_KEY_ARROW_DOWN (0xFFFF-19) +#define TB_KEY_ARROW_LEFT (0xFFFF-20) +#define TB_KEY_ARROW_RIGHT (0xFFFF-21) +#define TB_KEY_MOUSE_LEFT (0xFFFF-22) +#define TB_KEY_MOUSE_RIGHT (0xFFFF-23) +#define TB_KEY_MOUSE_MIDDLE (0xFFFF-24) +#define TB_KEY_MOUSE_RELEASE (0xFFFF-25) +#define TB_KEY_MOUSE_WHEEL_UP (0xFFFF-26) +#define TB_KEY_MOUSE_WHEEL_DOWN (0xFFFF-27) +#define TB_KEY_START_PASTE (0xFFFF-28) +#define TB_KEY_END_PASTE (0xFFFF-29) +#define TB_KEY_CTRL_ARROW_UP (0xFFFF-30) +#define TB_KEY_CTRL_ARROW_DOWN (0xFFFF-31) +#define TB_KEY_CTRL_ARROW_LEFT (0xFFFF-32) +#define TB_KEY_CTRL_ARROW_RIGHT (0xFFFF-33) +#define TB_KEY_SHIFT_TAB (0xFFFF-34) + +/* Names for some of the possible values for tb_event.ch. */ +/* These are all ASCII code points below SPACE character and a BACKSPACE key. */ +#define TB_KEY_CTRL_TILDE 0x00 +#define TB_KEY_CTRL_2 0x00 /* clash with 'CTRL_TILDE' */ +#define TB_KEY_CTRL_A 0x01 +#define TB_KEY_CTRL_B 0x02 +#define TB_KEY_CTRL_C 0x03 +#define TB_KEY_CTRL_D 0x04 +#define TB_KEY_CTRL_E 0x05 +#define TB_KEY_CTRL_F 0x06 +#define TB_KEY_CTRL_G 0x07 +#define TB_KEY_BACKSPACE 0x08 +#define TB_KEY_CTRL_H 0x08 /* clash with 'CTRL_BACKSPACE' */ +#define TB_KEY_TAB 0x09 +#define TB_KEY_CTRL_I 0x09 /* clash with 'TAB' */ +#define TB_KEY_CTRL_J 0x0A +#define TB_KEY_CTRL_K 0x0B +#define TB_KEY_CTRL_L 0x0C +#define TB_KEY_ENTER 0x0D +#define TB_KEY_CTRL_M 0x0D /* clash with 'ENTER' */ +#define TB_KEY_CTRL_N 0x0E +#define TB_KEY_CTRL_O 0x0F +#define TB_KEY_CTRL_P 0x10 +#define TB_KEY_CTRL_Q 0x11 +#define TB_KEY_CTRL_R 0x12 +#define TB_KEY_CTRL_S 0x13 +#define TB_KEY_CTRL_T 0x14 +#define TB_KEY_CTRL_U 0x15 +#define TB_KEY_CTRL_V 0x16 +#define TB_KEY_CTRL_W 0x17 +#define TB_KEY_CTRL_X 0x18 +#define TB_KEY_CTRL_Y 0x19 +#define TB_KEY_CTRL_Z 0x1A +#define TB_KEY_ESC 0x1B +#define TB_KEY_CTRL_LSQ_BRACKET 0x1B /* clash with 'ESC' */ +#define TB_KEY_CTRL_3 0x1B /* clash with 'ESC' */ +#define TB_KEY_CTRL_4 0x1C +#define TB_KEY_CTRL_BACKSLASH 0x1C /* clash with 'CTRL_4' */ +#define TB_KEY_CTRL_5 0x1D +#define TB_KEY_CTRL_RSQ_BRACKET 0x1D /* clash with 'CTRL_5' */ +#define TB_KEY_CTRL_6 0x1E +#define TB_KEY_CTRL_7 0x1F +#define TB_KEY_CTRL_SLASH 0x1F /* clash with 'CTRL_7' */ +#define TB_KEY_CTRL_UNDERSCORE 0x1F /* clash with 'CTRL_7' */ +#define TB_KEY_SPACE 0x20 +#define TB_KEY_BACKSPACE2 0x7F +#define TB_KEY_CTRL_8 0x7F /* clash with 'DELETE' */ +/* These are non-existing ones. + * + * #define TB_KEY_CTRL_1 clash with '1' + * #define TB_KEY_CTRL_9 clash with '9' + * #define TB_KEY_CTRL_0 clash with '0' + */ +/* Some aliases */ +#define TB_KEY_NEWLINE TB_KEY_CTRL_J +#define TB_KEY_CARRIAGE_RETURN TB_KEY_CTRL_M + +/* Wait for an event up to 'timeout' milliseconds and fill the 'event' + * structure with it, when the event is available. Returns the type of the + * event (one of TB_EVENT_* constants) or -1 if there was an error or 0 in case + * there were no event during 'timeout' period. + */ +int tb_peek_event(struct tb_event *event, int timeout); + +/* Wait for an event forever and fill the 'event' structure with it, when the + * event is available. Returns the type of the event (one of TB_EVENT_* + * constants) or -1 if there was an error. + */ +int tb_poll_event(struct tb_event *event); + +int tb_event_ready(void); + +/*** 3. Utility utf8 functions. */ +#define TB_EOF -1 +int tb_utf8_char_length(char c); +int tb_utf8_char_to_unicode(uint32_t *out, const char *c); +int tb_utf8_unicode_to_char(char *out, uint32_t c); +const char* to_unicode(uint32_t c); + +#ifdef __cplusplus +} +#endif diff --git a/archive/1.vm/termbox/utf8.c b/archive/1.vm/termbox/utf8.c new file mode 100644 index 00000000..26c0c27b --- /dev/null +++ b/archive/1.vm/termbox/utf8.c @@ -0,0 +1,79 @@ +#include "termbox.h" + +static const unsigned char utf8_length[256] = { + 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, + 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, + 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, + 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, + 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, + 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, + 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, + 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6,1,1 +}; + +static const unsigned char utf8_mask[6] = { + 0x7F, + 0x1F, + 0x0F, + 0x07, + 0x03, + 0x01 +}; + +int tb_utf8_char_length(char c) +{ + return utf8_length[(unsigned char)c]; +} + +int tb_utf8_char_to_unicode(uint32_t *out, const char *c) +{ + if (*c == 0) + return TB_EOF; + + int i; + unsigned char len = tb_utf8_char_length(*c); + unsigned char mask = utf8_mask[len-1]; + uint32_t result = c[0] & mask; + for (i = 1; i < len; ++i) { + result <<= 6; + result |= c[i] & 0x3f; + } + + *out = result; + return (int)len; +} + +int tb_utf8_unicode_to_char(char *out, uint32_t c) +{ + int len = 0; + int first; + int i; + + if (c < 0x80) { + first = 0; + len = 1; + } else if (c < 0x800) { + first = 0xc0; + len = 2; + } else if (c < 0x10000) { + first = 0xe0; + len = 3; + } else if (c < 0x200000) { + first = 0xf0; + len = 4; + } else if (c < 0x4000000) { + first = 0xf8; + len = 5; + } else { + first = 0xfc; + len = 6; + } + + for (i = len - 1; i > 0; --i) { + out[i] = (c & 0x3f) | 0x80; + c >>= 6; + } + out[0] = c | first; + + return len; +} |