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 struct term_utf8 term_utf8;
+typedef struct term_seq term_seq;
+typedef struct term_parser term_parser;
+typedef uint32_t term_charset[96];
+
+typedef struct term_screen term_screen;
+
/*
* Miscellaneous
* Sundry things and external helpers.
#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);
+
+/*
+ * UTF-8
+ * The UTF-decoder and encoder are adjusted for terminals and provide proper
+ * fallbacks for invalid UTF-8. In terminals it's quite usual to use fallbacks
+ * instead of rejecting invalid input. This way, old legacy applications still
+ * work (this is especially important for 7bit/ASCII DEC modes).
+ */
+
+struct term_utf8 {
+ uint32_t chars[5];
+ uint32_t ucs4;
+
+ unsigned int i_bytes : 3;
+ unsigned int n_bytes : 3;
+ unsigned int valid : 1;
+};
+
+size_t term_utf8_encode(char *out_utf8, uint32_t g);
+const uint32_t *term_utf8_decode(term_utf8 *p, size_t *out_len, char c);
+
+/*
+ * 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;
+};
+
+int term_parser_new(term_parser **out, bool host);
+term_parser *term_parser_free(term_parser *parser);
+int term_parser_feed(term_parser *parser, const term_seq **seq_out, uint32_t raw);
+
+#define _term_parser_free_ _cleanup_(term_parser_freep)
+DEFINE_TRIVIAL_CLEANUP_FUNC(term_parser*, term_parser_free);
+
+/*
+ * 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: off) */
+ 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_ORIGIN_MODE = (1U << 4), /* in origin mode, the cursor is bound by the margins (default: off) */
+ TERM_FLAG_PENDING_WRAP = (1U << 5), /* wrap-around is pending */
+ TERM_FLAG_AUTO_WRAP = (1U << 6), /* auto-wrap mode causes line-wraps at line-ends (default: off) */
+ TERM_FLAG_KEYPAD_MODE = (1U << 7), /* application-keypad mode (default: off) */
+ TERM_FLAG_CURSOR_KEYS = (1U << 8), /* enable application cursor-keys (default: off) */
+};
+
+enum {
+ TERM_CONFORMANCE_LEVEL_VT52,
+ TERM_CONFORMANCE_LEVEL_VT100,
+ TERM_CONFORMANCE_LEVEL_VT400,
+ TERM_CONFORMANCE_LEVEL_CNT,
+};
+
+typedef int (*term_screen_write_fn) (term_screen *screen, void *userdata, const void *buf, size_t size);
+typedef int (*term_screen_cmd_fn) (term_screen *screen, void *userdata, unsigned int cmd, const term_seq *seq);
+
+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;
+ unsigned int cursor_x;
+ unsigned int cursor_y;
+ term_attr attr;
+ term_attr default_attr;
+
+ term_charset **gl;
+ term_charset **gr;
+ term_charset **glt;
+ term_charset **grt;
+ term_charset *g0;
+ term_charset *g1;
+ term_charset *g2;
+ term_charset *g3;
+
+ char *answerback;
+
+ struct {
+ unsigned int cursor_x;
+ unsigned int cursor_y;
+ term_attr attr;
+ term_charset **gl;
+ term_charset **gr;
+ term_charset **glt;
+ term_charset **grt;
+ unsigned int flags;
+ } saved;
+};
+
+int term_screen_new(term_screen **out, term_screen_write_fn write_fn, void *write_fn_data, term_screen_cmd_fn cmd_fn, void *cmd_fn_data);
+term_screen *term_screen_ref(term_screen *screen);
+term_screen *term_screen_unref(term_screen *screen);
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(term_screen*, term_screen_unref);
+
+int term_screen_feed_text(term_screen *screen, const uint8_t *in, size_t size);
+int term_screen_feed_keyboard(term_screen *screen, uint32_t keysym, uint32_t ascii, uint32_t ucs4, unsigned int mods);
+int term_screen_resize(term_screen *screen, unsigned int width, unsigned int height);
+void term_screen_soft_reset(term_screen *screen);
+void term_screen_hard_reset(term_screen *screen);
+
+int term_screen_set_answerback(term_screen *screen, const char *answerback);
~ianmdlvl / elogind.git / blobdiff