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Diffstat (limited to 'src/libsystemd-terminal/term-internal.h')
| -rw-r--r-- | src/libsystemd-terminal/term-internal.h | 650 |
1 files changed, 0 insertions, 650 deletions
diff --git a/src/libsystemd-terminal/term-internal.h b/src/libsystemd-terminal/term-internal.h deleted file mode 100644 index 8c6a00188c..0000000000 --- a/src/libsystemd-terminal/term-internal.h +++ /dev/null @@ -1,650 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright (C) 2014 David Herrmann <dh.herrmann@gmail.com> - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#pragma once - -#include <stdbool.h> -#include <stdint.h> -#include <stdlib.h> -#include "term.h" -#include "util.h" - -typedef struct term_char term_char_t; -typedef struct term_charbuf term_charbuf_t; - -typedef struct term_cell term_cell; -typedef struct term_line term_line; - -typedef struct term_page term_page; -typedef struct term_history term_history; - -typedef uint32_t term_charset[96]; -typedef struct term_state term_state; - -/* - * Miscellaneous - * Sundry things and external helpers. - */ - -int mk_wcwidth(wchar_t ucs4); -int mk_wcwidth_cjk(wchar_t ucs4); -int mk_wcswidth(const wchar_t *str, size_t len); -int mk_wcswidth_cjk(const wchar_t *str, size_t len); - -/* - * Characters - * Each cell in a terminal page contains only a single character. This is - * usually a single UCS-4 value. However, Unicode allows combining-characters, - * therefore, the number of UCS-4 characters per cell must be unlimited. The - * term_char_t object wraps the internal combining char API so it can be - * treated as a single object. - */ - -struct term_char { - /* never access this value directly */ - uint64_t _value; -}; - -struct term_charbuf { - /* 3 bytes + zero-terminator */ - uint32_t buf[4]; -}; - -#define TERM_CHAR_INIT(_val) ((term_char_t){ ._value = (_val) }) -#define TERM_CHAR_NULL TERM_CHAR_INIT(0) - -term_char_t term_char_set(term_char_t previous, uint32_t append_ucs4); -term_char_t term_char_merge(term_char_t base, uint32_t append_ucs4); -term_char_t term_char_dup(term_char_t ch); -term_char_t term_char_dup_append(term_char_t base, uint32_t append_ucs4); - -const uint32_t *term_char_resolve(term_char_t ch, size_t *s, term_charbuf_t *b); -unsigned int term_char_lookup_width(term_char_t ch); - -/* true if @ch is TERM_CHAR_NULL, otherwise false */ -static inline bool term_char_is_null(term_char_t ch) { - return ch._value == 0; -} - -/* true if @ch is dynamically allocated and needs to be freed */ -static inline bool term_char_is_allocated(term_char_t ch) { - return !term_char_is_null(ch) && !(ch._value & 0x1); -} - -/* true if (a == b), otherwise false; this is (a == b), NOT (*a == *b) */ -static inline bool term_char_same(term_char_t a, term_char_t b) { - return a._value == b._value; -} - -/* true if (*a == *b), otherwise false; this is implied by (a == b) */ -static inline bool term_char_equal(term_char_t a, term_char_t b) { - const uint32_t *sa, *sb; - term_charbuf_t ca, cb; - size_t na, nb; - - sa = term_char_resolve(a, &na, &ca); - sb = term_char_resolve(b, &nb, &cb); - return na == nb && !memcmp(sa, sb, sizeof(*sa) * na); -} - -/* free @ch in case it is dynamically allocated */ -static inline term_char_t term_char_free(term_char_t ch) { - if (term_char_is_allocated(ch)) - term_char_set(ch, 0); - - return TERM_CHAR_NULL; -} - -/* gcc _cleanup_ helpers */ -#define _term_char_free_ _cleanup_(term_char_freep) -static inline void term_char_freep(term_char_t *p) { - term_char_free(*p); -} - -/* - * Cells - * The term_cell structure respresents a single cell in a terminal page. It - * contains the stored character, the age of the cell and all its attributes. - */ - -struct term_cell { - term_char_t ch; /* stored char or TERM_CHAR_NULL */ - term_age_t age; /* cell age or TERM_AGE_NULL */ - term_attr attr; /* cell attributes */ - unsigned int cwidth; /* cached term_char_lookup_width(cell->ch) */ -}; - -/* - * Lines - * Instead of storing cells in a 2D array, we store them in an array of - * dynamically allocated lines. This way, scrolling can be implemented very - * fast without moving any cells at all. Similarly, the scrollback-buffer is - * much simpler to implement. - * We use term_line to store a single line. It contains an array of cells, a - * fill-state which remembers the amount of blanks on the right side, a - * separate age just for the line which can overwrite the age for all cells, - * and some management data. - */ - -struct term_line { - term_line *lines_next; /* linked-list for histories */ - term_line *lines_prev; /* linked-list for histories */ - - unsigned int width; /* visible width of line */ - unsigned int n_cells; /* # of allocated cells */ - term_cell *cells; /* cell-array */ - - term_age_t age; /* line age */ - unsigned int fill; /* # of valid cells; starting left */ -}; - -int term_line_new(term_line **out); -term_line *term_line_free(term_line *line); - -#define _term_line_free_ _cleanup_(term_line_freep) -DEFINE_TRIVIAL_CLEANUP_FUNC(term_line*, term_line_free); - -int term_line_reserve(term_line *line, unsigned int width, const term_attr *attr, term_age_t age, unsigned int protect_width); -void term_line_set_width(term_line *line, unsigned int width); -void term_line_write(term_line *line, unsigned int pos_x, term_char_t ch, unsigned int cwidth, const term_attr *attr, term_age_t age, bool insert_mode); -void term_line_insert(term_line *line, unsigned int from, unsigned int num, const term_attr *attr, term_age_t age); -void term_line_delete(term_line *line, unsigned int from, unsigned int num, const term_attr *attr, term_age_t age); -void term_line_append_combchar(term_line *line, unsigned int pos_x, uint32_t ucs4, term_age_t age); -void term_line_erase(term_line *line, unsigned int from, unsigned int num, const term_attr *attr, term_age_t age, bool keep_protected); -void term_line_reset(term_line *line, const term_attr *attr, term_age_t age); - -void term_line_link(term_line *line, term_line **first, term_line **last); -void term_line_link_tail(term_line *line, term_line **first, term_line **last); -void term_line_unlink(term_line *line, term_line **first, term_line **last); - -#define TERM_LINE_LINK(_line, _head) term_line_link((_line), &(_head)->lines_first, &(_head)->lines_last) -#define TERM_LINE_LINK_TAIL(_line, _head) term_line_link_tail((_line), &(_head)->lines_first, &(_head)->lines_last) -#define TERM_LINE_UNLINK(_line, _head) term_line_unlink((_line), &(_head)->lines_first, &(_head)->lines_last) - -/* - * Pages - * A page represents the 2D table containing all cells of a terminal. It stores - * lines as an array of pointers so scrolling becomes a simple line-shuffle - * operation. - * Scrolling is always targeted only at the scroll-region defined via scroll_idx - * and scroll_num. The fill-state keeps track of the number of touched lines in - * the scroll-region. @width and @height describe the visible region of the page - * and are guaranteed to be allocated at all times. - */ - -struct term_page { - term_age_t age; /* page age */ - - term_line **lines; /* array of line-pointers */ - term_line **line_cache; /* cache for temporary operations */ - unsigned int n_lines; /* # of allocated lines */ - - unsigned int width; /* width of visible area */ - unsigned int height; /* height of visible area */ - unsigned int scroll_idx; /* scrolling-region start index */ - unsigned int scroll_num; /* scrolling-region length in lines */ - unsigned int scroll_fill; /* # of valid scroll-lines */ -}; - -int term_page_new(term_page **out); -term_page *term_page_free(term_page *page); - -#define _term_page_free_ _cleanup_(term_page_freep) -DEFINE_TRIVIAL_CLEANUP_FUNC(term_page*, term_page_free); - -term_cell *term_page_get_cell(term_page *page, unsigned int x, unsigned int y); - -int term_page_reserve(term_page *page, unsigned int cols, unsigned int rows, const term_attr *attr, term_age_t age); -void term_page_resize(term_page *page, unsigned int cols, unsigned int rows, const term_attr *attr, term_age_t age, term_history *history); -void term_page_write(term_page *page, unsigned int pos_x, unsigned int pos_y, term_char_t ch, unsigned int cwidth, const term_attr *attr, term_age_t age, bool insert_mode); -void term_page_insert_cells(term_page *page, unsigned int from_x, unsigned int from_y, unsigned int num, const term_attr *attr, term_age_t age); -void term_page_delete_cells(term_page *page, unsigned int from_x, unsigned int from_y, unsigned int num, const term_attr *attr, term_age_t age); -void term_page_append_combchar(term_page *page, unsigned int pos_x, unsigned int pos_y, uint32_t ucs4, term_age_t age); -void term_page_erase(term_page *page, unsigned int from_x, unsigned int from_y, unsigned int to_x, unsigned int to_y, const term_attr *attr, term_age_t age, bool keep_protected); -void term_page_reset(term_page *page, const term_attr *attr, term_age_t age); - -void term_page_set_scroll_region(term_page *page, unsigned int idx, unsigned int num); -void term_page_scroll_up(term_page *page, unsigned int num, const term_attr *attr, term_age_t age, term_history *history); -void term_page_scroll_down(term_page *page, unsigned int num, const term_attr *attr, term_age_t age, term_history *history); -void term_page_insert_lines(term_page *page, unsigned int pos_y, unsigned int num, const term_attr *attr, term_age_t age); -void term_page_delete_lines(term_page *page, unsigned int pos_y, unsigned int num, const term_attr *attr, term_age_t age); - -/* - * Histories - * Scroll-back buffers use term_history objects to store scroll-back lines. A - * page is independent of the history used. All page operations that modify a - * history take it as separate argument. You're free to pass NULL at all times - * if no history should be used. - * Lines are stored in a linked list as no complex operations are ever done on - * history lines, besides pushing/poping. Note that history lines do not have a - * guaranteed minimum length. Any kind of line might be stored there. Missing - * cells should be cleared to the background color. - */ - -struct term_history { - term_line *lines_first; - term_line *lines_last; - unsigned int n_lines; - unsigned int max_lines; -}; - -int term_history_new(term_history **out); -term_history *term_history_free(term_history *history); - -#define _term_history_free_ _cleanup_(term_history_freep) -DEFINE_TRIVIAL_CLEANUP_FUNC(term_history*, term_history_free); - -void term_history_clear(term_history *history); -void term_history_trim(term_history *history, unsigned int max); -void term_history_push(term_history *history, term_line *line); -term_line *term_history_pop(term_history *history, unsigned int reserve_width, const term_attr *attr, term_age_t age); -unsigned int term_history_peek(term_history *history, unsigned int max, unsigned int reserve_width, const term_attr *attr, term_age_t age); - -/* - * Parsers - * The term_parser object parses control-sequences for both host and terminal - * side. Based on this parser, there is a set of command-parsers that take a - * term_seq sequence and returns the command it represents. This is different - * for host and terminal side so a different set of parsers is provided. - */ - -enum { - TERM_SEQ_NONE, /* placeholder, no sequence parsed */ - - TERM_SEQ_IGNORE, /* no-op character */ - TERM_SEQ_GRAPHIC, /* graphic character */ - TERM_SEQ_CONTROL, /* control character */ - TERM_SEQ_ESCAPE, /* escape sequence */ - TERM_SEQ_CSI, /* control sequence function */ - TERM_SEQ_DCS, /* device control string */ - TERM_SEQ_OSC, /* operating system control */ - - TERM_SEQ_CNT -}; - -enum { - /* these must be kept compatible to (1U << (ch - 0x20)) */ - - TERM_SEQ_FLAG_SPACE = (1U << 0), /* char: */ - TERM_SEQ_FLAG_BANG = (1U << 1), /* char: ! */ - TERM_SEQ_FLAG_DQUOTE = (1U << 2), /* char: " */ - TERM_SEQ_FLAG_HASH = (1U << 3), /* char: # */ - TERM_SEQ_FLAG_CASH = (1U << 4), /* char: $ */ - TERM_SEQ_FLAG_PERCENT = (1U << 5), /* char: % */ - TERM_SEQ_FLAG_AND = (1U << 6), /* char: & */ - TERM_SEQ_FLAG_SQUOTE = (1U << 7), /* char: ' */ - TERM_SEQ_FLAG_POPEN = (1U << 8), /* char: ( */ - TERM_SEQ_FLAG_PCLOSE = (1U << 9), /* char: ) */ - TERM_SEQ_FLAG_MULT = (1U << 10), /* char: * */ - TERM_SEQ_FLAG_PLUS = (1U << 11), /* char: + */ - TERM_SEQ_FLAG_COMMA = (1U << 12), /* char: , */ - TERM_SEQ_FLAG_MINUS = (1U << 13), /* char: - */ - TERM_SEQ_FLAG_DOT = (1U << 14), /* char: . */ - TERM_SEQ_FLAG_SLASH = (1U << 15), /* char: / */ - - /* 16-35 is reserved for numbers; unused */ - - /* COLON is reserved = (1U << 26), char: : */ - /* SEMICOLON is reserved = (1U << 27), char: ; */ - TERM_SEQ_FLAG_LT = (1U << 28), /* char: < */ - TERM_SEQ_FLAG_EQUAL = (1U << 29), /* char: = */ - TERM_SEQ_FLAG_GT = (1U << 30), /* char: > */ - TERM_SEQ_FLAG_WHAT = (1U << 31), /* char: ? */ -}; - -enum { - TERM_CMD_NONE, /* placeholder */ - TERM_CMD_GRAPHIC, /* graphics character */ - - TERM_CMD_BEL, /* bell */ - TERM_CMD_BS, /* backspace */ - TERM_CMD_CBT, /* cursor-backward-tabulation */ - TERM_CMD_CHA, /* cursor-horizontal-absolute */ - TERM_CMD_CHT, /* cursor-horizontal-forward-tabulation */ - TERM_CMD_CNL, /* cursor-next-line */ - TERM_CMD_CPL, /* cursor-previous-line */ - TERM_CMD_CR, /* carriage-return */ - TERM_CMD_CUB, /* cursor-backward */ - TERM_CMD_CUD, /* cursor-down */ - TERM_CMD_CUF, /* cursor-forward */ - TERM_CMD_CUP, /* cursor-position */ - TERM_CMD_CUU, /* cursor-up */ - TERM_CMD_DA1, /* primary-device-attributes */ - TERM_CMD_DA2, /* secondary-device-attributes */ - TERM_CMD_DA3, /* tertiary-device-attributes */ - TERM_CMD_DC1, /* device-control-1 or XON */ - TERM_CMD_DC3, /* device-control-3 or XOFF */ - TERM_CMD_DCH, /* delete-character */ - TERM_CMD_DECALN, /* screen-alignment-pattern */ - TERM_CMD_DECANM, /* ansi-mode */ - TERM_CMD_DECBI, /* back-index */ - TERM_CMD_DECCARA, /* change-attributes-in-rectangular-area */ - TERM_CMD_DECCRA, /* copy-rectangular-area */ - TERM_CMD_DECDC, /* delete-column */ - TERM_CMD_DECDHL_BH, /* double-width-double-height-line: bottom half */ - TERM_CMD_DECDHL_TH, /* double-width-double-height-line: top half */ - TERM_CMD_DECDWL, /* double-width-single-height-line */ - TERM_CMD_DECEFR, /* enable-filter-rectangle */ - TERM_CMD_DECELF, /* enable-local-functions */ - TERM_CMD_DECELR, /* enable-locator-reporting */ - TERM_CMD_DECERA, /* erase-rectangular-area */ - TERM_CMD_DECFI, /* forward-index */ - TERM_CMD_DECFRA, /* fill-rectangular-area */ - TERM_CMD_DECIC, /* insert-column */ - TERM_CMD_DECID, /* return-terminal-id */ - TERM_CMD_DECINVM, /* invoke-macro */ - TERM_CMD_DECKBD, /* keyboard-language-selection */ - TERM_CMD_DECKPAM, /* keypad-application-mode */ - TERM_CMD_DECKPNM, /* keypad-numeric-mode */ - TERM_CMD_DECLFKC, /* local-function-key-control */ - TERM_CMD_DECLL, /* load-leds */ - TERM_CMD_DECLTOD, /* load-time-of-day */ - TERM_CMD_DECPCTERM, /* pcterm-mode */ - TERM_CMD_DECPKA, /* program-key-action */ - TERM_CMD_DECPKFMR, /* program-key-free-memory-report */ - TERM_CMD_DECRARA, /* reverse-attributes-in-rectangular-area */ - TERM_CMD_DECRC, /* restore-cursor */ - TERM_CMD_DECREQTPARM, /* request-terminal-parameters */ - TERM_CMD_DECRPKT, /* report-key-type */ - TERM_CMD_DECRQCRA, /* request-checksum-of-rectangular-area */ - TERM_CMD_DECRQDE, /* request-display-extent */ - TERM_CMD_DECRQKT, /* request-key-type */ - TERM_CMD_DECRQLP, /* request-locator-position */ - TERM_CMD_DECRQM_ANSI, /* request-mode-ansi */ - TERM_CMD_DECRQM_DEC, /* request-mode-dec */ - TERM_CMD_DECRQPKFM, /* request-program-key-free-memory */ - TERM_CMD_DECRQPSR, /* request-presentation-state-report */ - TERM_CMD_DECRQTSR, /* request-terminal-state-report */ - TERM_CMD_DECRQUPSS, /* request-user-preferred-supplemental-set */ - TERM_CMD_DECSACE, /* select-attribute-change-extent */ - TERM_CMD_DECSASD, /* select-active-status-display */ - TERM_CMD_DECSC, /* save-cursor */ - TERM_CMD_DECSCA, /* select-character-protection-attribute */ - TERM_CMD_DECSCL, /* select-conformance-level */ - TERM_CMD_DECSCP, /* select-communication-port */ - TERM_CMD_DECSCPP, /* select-columns-per-page */ - TERM_CMD_DECSCS, /* select-communication-speed */ - TERM_CMD_DECSCUSR, /* set-cursor-style */ - TERM_CMD_DECSDDT, /* select-disconnect-delay-time */ - TERM_CMD_DECSDPT, /* select-digital-printed-data-type */ - TERM_CMD_DECSED, /* selective-erase-in-display */ - TERM_CMD_DECSEL, /* selective-erase-in-line */ - TERM_CMD_DECSERA, /* selective-erase-rectangular-area */ - TERM_CMD_DECSFC, /* select-flow-control */ - TERM_CMD_DECSKCV, /* set-key-click-volume */ - TERM_CMD_DECSLCK, /* set-lock-key-style */ - TERM_CMD_DECSLE, /* select-locator-events */ - TERM_CMD_DECSLPP, /* set-lines-per-page */ - TERM_CMD_DECSLRM_OR_SC, /* set-left-and-right-margins or save-cursor */ - TERM_CMD_DECSMBV, /* set-margin-bell-volume */ - TERM_CMD_DECSMKR, /* select-modifier-key-reporting */ - TERM_CMD_DECSNLS, /* set-lines-per-screen */ - TERM_CMD_DECSPP, /* set-port-parameter */ - TERM_CMD_DECSPPCS, /* select-pro-printer-character-set */ - TERM_CMD_DECSPRTT, /* select-printer-type */ - TERM_CMD_DECSR, /* secure-reset */ - TERM_CMD_DECSRFR, /* select-refresh-rate */ - TERM_CMD_DECSSCLS, /* set-scroll-speed */ - TERM_CMD_DECSSDT, /* select-status-display-line-type */ - TERM_CMD_DECSSL, /* select-setup-language */ - TERM_CMD_DECST8C, /* set-tab-at-every-8-columns */ - TERM_CMD_DECSTBM, /* set-top-and-bottom-margins */ - TERM_CMD_DECSTR, /* soft-terminal-reset */ - TERM_CMD_DECSTRL, /* set-transmit-rate-limit */ - TERM_CMD_DECSWBV, /* set-warning-bell-volume */ - TERM_CMD_DECSWL, /* single-width-single-height-line */ - TERM_CMD_DECTID, /* select-terminal-id */ - TERM_CMD_DECTME, /* terminal-mode-emulation */ - TERM_CMD_DECTST, /* invoke-confidence-test */ - TERM_CMD_DL, /* delete-line */ - TERM_CMD_DSR_ANSI, /* device-status-report-ansi */ - TERM_CMD_DSR_DEC, /* device-status-report-dec */ - TERM_CMD_ECH, /* erase-character */ - TERM_CMD_ED, /* erase-in-display */ - TERM_CMD_EL, /* erase-in-line */ - TERM_CMD_ENQ, /* enquiry */ - TERM_CMD_EPA, /* end-of-guarded-area */ - TERM_CMD_FF, /* form-feed */ - TERM_CMD_HPA, /* horizontal-position-absolute */ - TERM_CMD_HPR, /* horizontal-position-relative */ - TERM_CMD_HT, /* horizontal-tab */ - TERM_CMD_HTS, /* horizontal-tab-set */ - TERM_CMD_HVP, /* horizontal-and-vertical-position */ - TERM_CMD_ICH, /* insert-character */ - TERM_CMD_IL, /* insert-line */ - TERM_CMD_IND, /* index */ - TERM_CMD_LF, /* line-feed */ - TERM_CMD_LS1R, /* locking-shift-1-right */ - TERM_CMD_LS2, /* locking-shift-2 */ - TERM_CMD_LS2R, /* locking-shift-2-right */ - TERM_CMD_LS3, /* locking-shift-3 */ - TERM_CMD_LS3R, /* locking-shift-3-right */ - TERM_CMD_MC_ANSI, /* media-copy-ansi */ - TERM_CMD_MC_DEC, /* media-copy-dec */ - TERM_CMD_NEL, /* next-line */ - TERM_CMD_NP, /* next-page */ - TERM_CMD_NULL, /* null */ - TERM_CMD_PP, /* preceding-page */ - TERM_CMD_PPA, /* page-position-absolute */ - TERM_CMD_PPB, /* page-position-backward */ - TERM_CMD_PPR, /* page-position-relative */ - TERM_CMD_RC, /* restore-cursor */ - TERM_CMD_REP, /* repeat */ - TERM_CMD_RI, /* reverse-index */ - TERM_CMD_RIS, /* reset-to-initial-state */ - TERM_CMD_RM_ANSI, /* reset-mode-ansi */ - TERM_CMD_RM_DEC, /* reset-mode-dec */ - TERM_CMD_S7C1T, /* set-7bit-c1-terminal */ - TERM_CMD_S8C1T, /* set-8bit-c1-terminal */ - TERM_CMD_SCS, /* select-character-set */ - TERM_CMD_SD, /* scroll-down */ - TERM_CMD_SGR, /* select-graphics-rendition */ - TERM_CMD_SI, /* shift-in */ - TERM_CMD_SM_ANSI, /* set-mode-ansi */ - TERM_CMD_SM_DEC, /* set-mode-dec */ - TERM_CMD_SO, /* shift-out */ - TERM_CMD_SPA, /* start-of-protected-area */ - TERM_CMD_SS2, /* single-shift-2 */ - TERM_CMD_SS3, /* single-shift-3 */ - TERM_CMD_ST, /* string-terminator */ - TERM_CMD_SU, /* scroll-up */ - TERM_CMD_SUB, /* substitute */ - TERM_CMD_TBC, /* tab-clear */ - TERM_CMD_VPA, /* vertical-line-position-absolute */ - TERM_CMD_VPR, /* vertical-line-position-relative */ - TERM_CMD_VT, /* vertical-tab */ - TERM_CMD_XTERM_CLLHP, /* xterm-cursor-lower-left-hp-bugfix */ - TERM_CMD_XTERM_IHMT, /* xterm-initiate-highlight-mouse-tracking */ - TERM_CMD_XTERM_MLHP, /* xterm-memory-lock-hp-bugfix */ - TERM_CMD_XTERM_MUHP, /* xterm-memory-unlock-hp-bugfix */ - TERM_CMD_XTERM_RPM, /* xterm-restore-private-mode */ - TERM_CMD_XTERM_RRV, /* xterm-reset-resource-value */ - TERM_CMD_XTERM_RTM, /* xterm-reset-title-mode */ - TERM_CMD_XTERM_SACL1, /* xterm-set-ansi-conformance-level-1 */ - TERM_CMD_XTERM_SACL2, /* xterm-set-ansi-conformance-level-2 */ - TERM_CMD_XTERM_SACL3, /* xterm-set-ansi-conformance-level-3 */ - TERM_CMD_XTERM_SDCS, /* xterm-set-default-character-set */ - TERM_CMD_XTERM_SGFX, /* xterm-sixel-graphics */ - TERM_CMD_XTERM_SPM, /* xterm-set-private-mode */ - TERM_CMD_XTERM_SRV, /* xterm-set-resource-value */ - TERM_CMD_XTERM_STM, /* xterm-set-title-mode */ - TERM_CMD_XTERM_SUCS, /* xterm-set-utf8-character-set */ - TERM_CMD_XTERM_WM, /* xterm-window-management */ - - TERM_CMD_CNT -}; - -enum { - /* - * Charsets: DEC marks charsets according to "Digital Equ. Corp.". - * NRCS marks charsets according to the "National Replacement - * Character Sets". ISO marks charsets according to ISO-8859. - * The USERDEF charset is special and can be modified by the host. - */ - - TERM_CHARSET_NONE, - - /* 96-compat charsets */ - TERM_CHARSET_ISO_LATIN1_SUPPLEMENTAL, - TERM_CHARSET_BRITISH_NRCS = TERM_CHARSET_ISO_LATIN1_SUPPLEMENTAL, - TERM_CHARSET_ISO_LATIN2_SUPPLEMENTAL, - TERM_CHARSET_AMERICAN_NRCS = TERM_CHARSET_ISO_LATIN2_SUPPLEMENTAL, - TERM_CHARSET_ISO_LATIN5_SUPPLEMENTAL, - TERM_CHARSET_ISO_GREEK_SUPPLEMENTAL, - TERM_CHARSET_ISO_HEBREW_SUPPLEMENTAL, - TERM_CHARSET_ISO_LATIN_CYRILLIC, - - TERM_CHARSET_96_CNT, - - /* 94-compat charsets */ - TERM_CHARSET_DEC_SPECIAL_GRAPHIC = TERM_CHARSET_96_CNT, - TERM_CHARSET_DEC_SUPPLEMENTAL, - TERM_CHARSET_DEC_TECHNICAL, - TERM_CHARSET_CYRILLIC_DEC, - TERM_CHARSET_DUTCH_NRCS, - TERM_CHARSET_FINNISH_NRCS, - TERM_CHARSET_FRENCH_NRCS, - TERM_CHARSET_FRENCH_CANADIAN_NRCS, - TERM_CHARSET_GERMAN_NRCS, - TERM_CHARSET_GREEK_DEC, - TERM_CHARSET_GREEK_NRCS, - TERM_CHARSET_HEBREW_DEC, - TERM_CHARSET_HEBREW_NRCS, - TERM_CHARSET_ITALIAN_NRCS, - TERM_CHARSET_NORWEGIAN_DANISH_NRCS, - TERM_CHARSET_PORTUGUESE_NRCS, - TERM_CHARSET_RUSSIAN_NRCS, - TERM_CHARSET_SCS_NRCS, - TERM_CHARSET_SPANISH_NRCS, - TERM_CHARSET_SWEDISH_NRCS, - TERM_CHARSET_SWISS_NRCS, - TERM_CHARSET_TURKISH_DEC, - TERM_CHARSET_TURKISH_NRCS, - - TERM_CHARSET_94_CNT, - - /* special charsets */ - TERM_CHARSET_USERPREF_SUPPLEMENTAL = TERM_CHARSET_94_CNT, - - TERM_CHARSET_CNT, -}; - -extern term_charset term_unicode_lower; -extern term_charset term_unicode_upper; -extern term_charset term_dec_supplemental_graphics; -extern term_charset term_dec_special_graphics; - -#define TERM_PARSER_ARG_MAX (16) -#define TERM_PARSER_ST_MAX (4096) - -struct term_seq { - unsigned int type; - unsigned int command; - uint32_t terminator; - unsigned int intermediates; - unsigned int charset; - unsigned int n_args; - int args[TERM_PARSER_ARG_MAX]; - unsigned int n_st; - char *st; -}; - -struct term_parser { - term_seq seq; - size_t st_alloc; - unsigned int state; - - bool is_host : 1; -}; - -/* - * Screens - * A term_screen object represents the terminal-side of the communication. It - * connects the term-parser and term-pages and handles all required commands. - * All state is managed by it. - */ - -enum { - TERM_FLAG_7BIT_MODE = (1U << 0), /* 7bit mode (default: on) */ - TERM_FLAG_HIDE_CURSOR = (1U << 1), /* hide cursor caret (default: off) */ - TERM_FLAG_INHIBIT_TPARM = (1U << 2), /* do not send TPARM unrequested (default: off) */ - TERM_FLAG_NEWLINE_MODE = (1U << 3), /* perform carriage-return on line-feeds (default: off) */ - TERM_FLAG_PENDING_WRAP = (1U << 4), /* wrap-around is pending */ - TERM_FLAG_KEYPAD_MODE = (1U << 5), /* application-keypad mode (default: off) */ - TERM_FLAG_CURSOR_KEYS = (1U << 6), /* enable application cursor-keys (default: off) */ -}; - -enum { - TERM_CONFORMANCE_LEVEL_VT52, - TERM_CONFORMANCE_LEVEL_VT100, - TERM_CONFORMANCE_LEVEL_VT400, - TERM_CONFORMANCE_LEVEL_CNT, -}; - -struct term_state { - unsigned int cursor_x; - unsigned int cursor_y; - term_attr attr; - term_charset **gl; - term_charset **gr; - term_charset **glt; - term_charset **grt; - - bool auto_wrap : 1; - bool origin_mode : 1; -}; - -struct term_screen { - unsigned long ref; - term_age_t age; - - term_page *page; - term_page *page_main; - term_page *page_alt; - term_history *history; - term_history *history_main; - - unsigned int n_tabs; - uint8_t *tabs; - - term_utf8 utf8; - term_parser *parser; - - term_screen_write_fn write_fn; - void *write_fn_data; - term_screen_cmd_fn cmd_fn; - void *cmd_fn_data; - - unsigned int flags; - unsigned int conformance_level; - term_attr default_attr; - - term_charset *g0; - term_charset *g1; - term_charset *g2; - term_charset *g3; - - char *answerback; - - term_state state; - term_state saved; - term_state saved_alt; -}; |