1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

#![allow(non_upper_case_globals)]

//! ncurses-compatible compiled terminfo format parsing (term(5))

use std::collections::HashMap;
use std::io::prelude::*;
use std::io;
use super::super::TermInfo;

// These are the orders ncurses uses in its compiled format (as of 5.9). Not sure if portable.

pub static boolfnames: &'static[&'static str] = &["auto_left_margin", "auto_right_margin",
    "no_esc_ctlc", "ceol_standout_glitch", "eat_newline_glitch", "erase_overstrike", "generic_type",
    "hard_copy", "has_meta_key", "has_status_line", "insert_null_glitch", "memory_above",
    "memory_below", "move_insert_mode", "move_standout_mode", "over_strike", "status_line_esc_ok",
    "dest_tabs_magic_smso", "tilde_glitch", "transparent_underline", "xon_xoff", "needs_xon_xoff",
    "prtr_silent", "hard_cursor", "non_rev_rmcup", "no_pad_char", "non_dest_scroll_region",
    "can_change", "back_color_erase", "hue_lightness_saturation", "col_addr_glitch",
    "cr_cancels_micro_mode", "has_print_wheel", "row_addr_glitch", "semi_auto_right_margin",
    "cpi_changes_res", "lpi_changes_res", "backspaces_with_bs", "crt_no_scrolling",
    "no_correctly_working_cr", "gnu_has_meta_key", "linefeed_is_newline", "has_hardware_tabs",
    "return_does_clr_eol"];

pub static boolnames: &'static[&'static str] = &["bw", "am", "xsb", "xhp", "xenl", "eo",
    "gn", "hc", "km", "hs", "in", "db", "da", "mir", "msgr", "os", "eslok", "xt", "hz", "ul", "xon",
    "nxon", "mc5i", "chts", "nrrmc", "npc", "ndscr", "ccc", "bce", "hls", "xhpa", "crxm", "daisy",
    "xvpa", "sam", "cpix", "lpix", "OTbs", "OTns", "OTnc", "OTMT", "OTNL", "OTpt", "OTxr"];

pub static numfnames: &'static[&'static str] = &[ "columns", "init_tabs", "lines",
    "lines_of_memory", "magic_cookie_glitch", "padding_baud_rate", "virtual_terminal",
    "width_status_line", "num_labels", "label_height", "label_width", "max_attributes",
    "maximum_windows", "max_colors", "max_pairs", "no_color_video", "buffer_capacity",
    "dot_vert_spacing", "dot_horz_spacing", "max_micro_address", "max_micro_jump", "micro_col_size",
    "micro_line_size", "number_of_pins", "output_res_char", "output_res_line",
    "output_res_horz_inch", "output_res_vert_inch", "print_rate", "wide_char_size", "buttons",
    "bit_image_entwining", "bit_image_type", "magic_cookie_glitch_ul", "carriage_return_delay",
    "new_line_delay", "backspace_delay", "horizontal_tab_delay", "number_of_function_keys"];

pub static numnames: &'static[&'static str] = &[ "cols", "it", "lines", "lm", "xmc", "pb",
    "vt", "wsl", "nlab", "lh", "lw", "ma", "wnum", "colors", "pairs", "ncv", "bufsz", "spinv",
    "spinh", "maddr", "mjump", "mcs", "mls", "npins", "orc", "orl", "orhi", "orvi", "cps", "widcs",
    "btns", "bitwin", "bitype", "UTug", "OTdC", "OTdN", "OTdB", "OTdT", "OTkn"];

pub static stringfnames: &'static[&'static str] = &[ "back_tab", "bell", "carriage_return",
    "change_scroll_region", "clear_all_tabs", "clear_screen", "clr_eol", "clr_eos",
    "column_address", "command_character", "cursor_address", "cursor_down", "cursor_home",
    "cursor_invisible", "cursor_left", "cursor_mem_address", "cursor_normal", "cursor_right",
    "cursor_to_ll", "cursor_up", "cursor_visible", "delete_character", "delete_line",
    "dis_status_line", "down_half_line", "enter_alt_charset_mode", "enter_blink_mode",
    "enter_bold_mode", "enter_ca_mode", "enter_delete_mode", "enter_dim_mode", "enter_insert_mode",
    "enter_secure_mode", "enter_protected_mode", "enter_reverse_mode", "enter_standout_mode",
    "enter_underline_mode", "erase_chars", "exit_alt_charset_mode", "exit_attribute_mode",
    "exit_ca_mode", "exit_delete_mode", "exit_insert_mode", "exit_standout_mode",
    "exit_underline_mode", "flash_screen", "form_feed", "from_status_line", "init_1string",
    "init_2string", "init_3string", "init_file", "insert_character", "insert_line",
    "insert_padding", "key_backspace", "key_catab", "key_clear", "key_ctab", "key_dc", "key_dl",
    "key_down", "key_eic", "key_eol", "key_eos", "key_f0", "key_f1", "key_f10", "key_f2", "key_f3",
    "key_f4", "key_f5", "key_f6", "key_f7", "key_f8", "key_f9", "key_home", "key_ic", "key_il",
    "key_left", "key_ll", "key_npage", "key_ppage", "key_right", "key_sf", "key_sr", "key_stab",
    "key_up", "keypad_local", "keypad_xmit", "lab_f0", "lab_f1", "lab_f10", "lab_f2", "lab_f3",
    "lab_f4", "lab_f5", "lab_f6", "lab_f7", "lab_f8", "lab_f9", "meta_off", "meta_on", "newline",
    "pad_char", "parm_dch", "parm_delete_line", "parm_down_cursor", "parm_ich", "parm_index",
    "parm_insert_line", "parm_left_cursor", "parm_right_cursor", "parm_rindex", "parm_up_cursor",
    "pkey_key", "pkey_local", "pkey_xmit", "print_screen", "prtr_off", "prtr_on", "repeat_char",
    "reset_1string", "reset_2string", "reset_3string", "reset_file", "restore_cursor",
    "row_address", "save_cursor", "scroll_forward", "scroll_reverse", "set_attributes", "set_tab",
    "set_window", "tab", "to_status_line", "underline_char", "up_half_line", "init_prog", "key_a1",
    "key_a3", "key_b2", "key_c1", "key_c3", "prtr_non", "char_padding", "acs_chars", "plab_norm",
    "key_btab", "enter_xon_mode", "exit_xon_mode", "enter_am_mode", "exit_am_mode", "xon_character",
    "xoff_character", "ena_acs", "label_on", "label_off", "key_beg", "key_cancel", "key_close",
    "key_command", "key_copy", "key_create", "key_end", "key_enter", "key_exit", "key_find",
    "key_help", "key_mark", "key_message", "key_move", "key_next", "key_open", "key_options",
    "key_previous", "key_print", "key_redo", "key_reference", "key_refresh", "key_replace",
    "key_restart", "key_resume", "key_save", "key_suspend", "key_undo", "key_sbeg", "key_scancel",
    "key_scommand", "key_scopy", "key_screate", "key_sdc", "key_sdl", "key_select", "key_send",
    "key_seol", "key_sexit", "key_sfind", "key_shelp", "key_shome", "key_sic", "key_sleft",
    "key_smessage", "key_smove", "key_snext", "key_soptions", "key_sprevious", "key_sprint",
    "key_sredo", "key_sreplace", "key_sright", "key_srsume", "key_ssave", "key_ssuspend",
    "key_sundo", "req_for_input", "key_f11", "key_f12", "key_f13", "key_f14", "key_f15", "key_f16",
    "key_f17", "key_f18", "key_f19", "key_f20", "key_f21", "key_f22", "key_f23", "key_f24",
    "key_f25", "key_f26", "key_f27", "key_f28", "key_f29", "key_f30", "key_f31", "key_f32",
    "key_f33", "key_f34", "key_f35", "key_f36", "key_f37", "key_f38", "key_f39", "key_f40",
    "key_f41", "key_f42", "key_f43", "key_f44", "key_f45", "key_f46", "key_f47", "key_f48",
    "key_f49", "key_f50", "key_f51", "key_f52", "key_f53", "key_f54", "key_f55", "key_f56",
    "key_f57", "key_f58", "key_f59", "key_f60", "key_f61", "key_f62", "key_f63", "clr_bol",
    "clear_margins", "set_left_margin", "set_right_margin", "label_format", "set_clock",
    "display_clock", "remove_clock", "create_window", "goto_window", "hangup", "dial_phone",
    "quick_dial", "tone", "pulse", "flash_hook", "fixed_pause", "wait_tone", "user0", "user1",
    "user2", "user3", "user4", "user5", "user6", "user7", "user8", "user9", "orig_pair",
    "orig_colors", "initialize_color", "initialize_pair", "set_color_pair", "set_foreground",
    "set_background", "change_char_pitch", "change_line_pitch", "change_res_horz",
    "change_res_vert", "define_char", "enter_doublewide_mode", "enter_draft_quality",
    "enter_italics_mode", "enter_leftward_mode", "enter_micro_mode", "enter_near_letter_quality",
    "enter_normal_quality", "enter_shadow_mode", "enter_subscript_mode", "enter_superscript_mode",
    "enter_upward_mode", "exit_doublewide_mode", "exit_italics_mode", "exit_leftward_mode",
    "exit_micro_mode", "exit_shadow_mode", "exit_subscript_mode", "exit_superscript_mode",
    "exit_upward_mode", "micro_column_address", "micro_down", "micro_left", "micro_right",
    "micro_row_address", "micro_up", "order_of_pins", "parm_down_micro", "parm_left_micro",
    "parm_right_micro", "parm_up_micro", "select_char_set", "set_bottom_margin",
    "set_bottom_margin_parm", "set_left_margin_parm", "set_right_margin_parm", "set_top_margin",
    "set_top_margin_parm", "start_bit_image", "start_char_set_def", "stop_bit_image",
    "stop_char_set_def", "subscript_characters", "superscript_characters", "these_cause_cr",
    "zero_motion", "char_set_names", "key_mouse", "mouse_info", "req_mouse_pos", "get_mouse",
    "set_a_foreground", "set_a_background", "pkey_plab", "device_type", "code_set_init",
    "set0_des_seq", "set1_des_seq", "set2_des_seq", "set3_des_seq", "set_lr_margin",
    "set_tb_margin", "bit_image_repeat", "bit_image_newline", "bit_image_carriage_return",
    "color_names", "define_bit_image_region", "end_bit_image_region", "set_color_band",
    "set_page_length", "display_pc_char", "enter_pc_charset_mode", "exit_pc_charset_mode",
    "enter_scancode_mode", "exit_scancode_mode", "pc_term_options", "scancode_escape",
    "alt_scancode_esc", "enter_horizontal_hl_mode", "enter_left_hl_mode", "enter_low_hl_mode",
    "enter_right_hl_mode", "enter_top_hl_mode", "enter_vertical_hl_mode", "set_a_attributes",
    "set_pglen_inch", "termcap_init2", "termcap_reset", "linefeed_if_not_lf", "backspace_if_not_bs",
    "other_non_function_keys", "arrow_key_map", "acs_ulcorner", "acs_llcorner", "acs_urcorner",
    "acs_lrcorner", "acs_ltee", "acs_rtee", "acs_btee", "acs_ttee", "acs_hline", "acs_vline",
    "acs_plus", "memory_lock", "memory_unlock", "box_chars_1"];

pub static stringnames: &'static[&'static str] = &[ "cbt", "_", "cr", "csr", "tbc", "clear",
    "_", "_", "hpa", "cmdch", "cup", "cud1", "home", "civis", "cub1", "mrcup", "cnorm", "cuf1",
    "ll", "cuu1", "cvvis", "dch1", "dl1", "dsl", "hd", "smacs", "blink", "bold", "smcup", "smdc",
    "dim", "smir", "invis", "prot", "rev", "smso", "smul", "ech", "rmacs", "sgr0", "rmcup", "rmdc",
    "rmir", "rmso", "rmul", "flash", "ff", "fsl", "is1", "is2", "is3", "if", "ich1", "il1", "ip",
    "kbs", "ktbc", "kclr", "kctab", "_", "_", "kcud1", "_", "_", "_", "_", "_", "_", "_", "_", "_",
    "_", "_", "_", "_", "_", "khome", "_", "_", "kcub1", "_", "knp", "kpp", "kcuf1", "_", "_",
    "khts", "_", "rmkx", "smkx", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "rmm", "_",
    "_", "pad", "dch", "dl", "cud", "ich", "indn", "il", "cub", "cuf", "rin", "cuu", "pfkey",
    "pfloc", "pfx", "mc0", "mc4", "_", "rep", "rs1", "rs2", "rs3", "rf", "rc", "vpa", "sc", "ind",
    "ri", "sgr", "_", "wind", "_", "tsl", "uc", "hu", "iprog", "_", "_", "_", "_", "_", "mc5p",
    "rmp", "acsc", "pln", "kcbt", "smxon", "rmxon", "smam", "rmam", "xonc", "xoffc", "_", "smln",
    "rmln", "_", "kcan", "kclo", "kcmd", "kcpy", "kcrt", "_", "kent", "kext", "kfnd", "khlp",
    "kmrk", "kmsg", "kmov", "knxt", "kopn", "kopt", "kprv", "kprt", "krdo", "kref", "krfr", "krpl",
    "krst", "kres", "ksav", "kspd", "kund", "kBEG", "kCAN", "kCMD", "kCPY", "kCRT", "_", "_",
    "kslt", "kEND", "kEOL", "kEXT", "kFND", "kHLP", "kHOM", "_", "kLFT", "kMSG", "kMOV", "kNXT",
    "kOPT", "kPRV", "kPRT", "kRDO", "kRPL", "kRIT", "kRES", "kSAV", "kSPD", "kUND", "rfi", "_", "_",
    "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_",
    "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_",
    "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_", "_",
    "dclk", "rmclk", "cwin", "wingo", "_", "dial", "qdial", "_", "_", "hook", "pause", "wait", "_",
    "_", "_", "_", "_", "_", "_", "_", "_", "_", "op", "oc", "initc", "initp", "scp", "setf",
    "setb", "cpi", "lpi", "chr", "cvr", "defc", "swidm", "sdrfq", "sitm", "slm", "smicm", "snlq",
    "snrmq", "sshm", "ssubm", "ssupm", "sum", "rwidm", "ritm", "rlm", "rmicm", "rshm", "rsubm",
    "rsupm", "rum", "mhpa", "mcud1", "mcub1", "mcuf1", "mvpa", "mcuu1", "porder", "mcud", "mcub",
    "mcuf", "mcuu", "scs", "smgb", "smgbp", "smglp", "smgrp", "smgt", "smgtp", "sbim", "scsd",
    "rbim", "rcsd", "subcs", "supcs", "docr", "zerom", "csnm", "kmous", "minfo", "reqmp", "getm",
    "setaf", "setab", "pfxl", "devt", "csin", "s0ds", "s1ds", "s2ds", "s3ds", "smglr", "smgtb",
    "birep", "binel", "bicr", "colornm", "defbi", "endbi", "setcolor", "slines", "dispc", "smpch",
    "rmpch", "smsc", "rmsc", "pctrm", "scesc", "scesa", "ehhlm", "elhlm", "elohlm", "erhlm",
    "ethlm", "evhlm", "sgr1", "slength", "OTi2", "OTrs", "OTnl", "OTbs", "OTko", "OTma", "OTG2",
    "OTG3", "OTG1", "OTG4", "OTGR", "OTGL", "OTGU", "OTGD", "OTGH", "OTGV", "OTGC", "meml", "memu",
    "box1"];

/// Parse a compiled terminfo entry, using long capability names if `longnames` is true
pub fn parse(file: &mut Read, longnames: bool)
             -> Result<Box<TermInfo>, String> {
    macro_rules! try { ($e:expr) => (
        match $e {
            Ok(e) => e,
            Err(e) => return Err(format!("{:?}", e))
        }
    ) }

    let bnames;
    let snames;
    let nnames;

    if longnames {
        bnames = boolfnames;
        snames = stringfnames;
        nnames = numfnames;
    } else {
        bnames = boolnames;
        snames = stringnames;
        nnames = numnames;
    }

    // Check magic number
    let magic = try!(read_le_u16(file));
    if magic != 0x011A {
        return Err(format!("invalid magic number: expected {:x}, found {:x}",
                           0x011A_usize, magic as usize));
    }

    let names_bytes          = try!(read_le_u16(file)) as isize;
    let bools_bytes          = try!(read_le_u16(file)) as isize;
    let numbers_count        = try!(read_le_u16(file)) as isize;
    let string_offsets_count = try!(read_le_u16(file)) as isize;
    let string_table_bytes   = try!(read_le_u16(file)) as isize;

    assert!(names_bytes          > 0);

    if (bools_bytes as usize) > boolnames.len() {
        return Err("incompatible file: more booleans than \
                    expected".to_string());
    }

    if (numbers_count as usize) > numnames.len() {
        return Err("incompatible file: more numbers than \
                    expected".to_string());
    }

    if (string_offsets_count as usize) > stringnames.len() {
        return Err("incompatible file: more string offsets than \
                    expected".to_string());
    }

    // don't read NUL
    let bytes = try!(read_exact(file, names_bytes as usize - 1));
    let names_str = match String::from_utf8(bytes) {
        Ok(s)  => s,
        Err(_) => return Err("input not utf-8".to_string()),
    };

    let term_names: Vec<String> = names_str.split('|')
                                           .map(|s| s.to_string())
                                           .collect();

    try!(read_byte(file)); // consume NUL

    let mut bools_map = HashMap::new();
    if bools_bytes != 0 {
        for i in 0..bools_bytes {
            let b = try!(read_byte(file));
            if b == 1 {
                bools_map.insert(bnames[i as usize].to_string(), true);
            }
        }
    }

    if (bools_bytes + names_bytes) % 2 == 1 {
        try!(read_byte(file)); // compensate for padding
    }

    let mut numbers_map = HashMap::new();
    if numbers_count != 0 {
        for i in 0..numbers_count {
            let n = try!(read_le_u16(file));
            if n != 0xFFFF {
                numbers_map.insert(nnames[i as usize].to_string(), n);
            }
        }
    }

    let mut string_map = HashMap::new();

    if string_offsets_count != 0 {
        let mut string_offsets = Vec::with_capacity(10);
        for _ in 0..string_offsets_count {
            string_offsets.push(try!(read_le_u16(file)));
        }

        let string_table = try!(read_exact(file, string_table_bytes as usize));

        if string_table.len() != string_table_bytes as usize {
            return Err("error: hit EOF before end of string \
                        table".to_string());
        }

        for (i, v) in string_offsets.iter().enumerate() {
            let offset = *v;
            if offset == 0xFFFF { // non-entry
                continue;
            }

            let name = if snames[i] == "_" {
                stringfnames[i]
            } else {
                snames[i]
            };

            if offset == 0xFFFE {
                // undocumented: FFFE indicates cap@, which means the capability is not present
                // unsure if the handling for this is correct
                string_map.insert(name.to_string(), Vec::new());
                continue;
            }


            // Find the offset of the NUL we want to go to
            let nulpos = string_table[offset as usize .. string_table_bytes as usize]
                .iter().position(|&b| b == 0);
            match nulpos {
                Some(len) => {
                    string_map.insert(name.to_string(),
                                      string_table[offset as usize ..
                                                   (offset as usize + len)].to_vec())
                },
                None => {
                    return Err("invalid file: missing NUL in \
                                string_table".to_string());
                }
            };
        }
    }

    // And that's all there is to it
    Ok(box TermInfo {
        names: term_names,
        bools: bools_map,
        numbers: numbers_map,
        strings: string_map
    })
}

fn read_le_u16<R: Read + ?Sized>(r: &mut R) -> io::Result<u16> {
    let mut b = [0; 2];
    assert_eq!(try!(r.read(&mut b)), 2);
    Ok((b[0] as u16) | ((b[1] as u16) << 8))
}

fn read_byte<R: Read + ?Sized>(r: &mut R) -> io::Result<u8> {
    let mut b = [0; 1];
    assert_eq!(try!(r.read(&mut b)), 1);
    Ok(b[0])
}

fn read_exact<R: Read + ?Sized>(r: &mut R, sz: usize) -> io::Result<Vec<u8>> {
    let mut v = Vec::with_capacity(sz);
    try!(r.take(sz as u64).read_to_end(&mut v));
    assert_eq!(v.len(), sz);
    Ok(v)
}

/// Create a dummy TermInfo struct for msys terminals
pub fn msys_terminfo() -> Box<TermInfo> {
    let mut strings = HashMap::new();
    strings.insert("sgr0".to_string(), b"\x1B[0m".to_vec());
    strings.insert("bold".to_string(), b"\x1B[1m".to_vec());
    strings.insert("setaf".to_string(), b"\x1B[3%p1%dm".to_vec());
    strings.insert("setab".to_string(), b"\x1B[4%p1%dm".to_vec());
    box TermInfo {
        names: vec!("cygwin".to_string()), // msys is a fork of an older cygwin version
        bools: HashMap::new(),
        numbers: HashMap::new(),
        strings: strings
    }
}

#[cfg(test)]
mod test {

    use super::{boolnames, boolfnames, numnames, numfnames, stringnames, stringfnames};

    #[test]
    fn test_veclens() {
        assert_eq!(boolfnames.len(), boolnames.len());
        assert_eq!(numfnames.len(), numnames.len());
        assert_eq!(stringfnames.len(), stringnames.len());
    }

    #[test]
    #[ignore(reason = "no ncurses on buildbots, needs a bundled terminfo file to test against")]
    fn test_parse() {
        // FIXME #6870: Distribute a compiled file in src/tests and test there
        // parse(old_io::fs_reader(&p("/usr/share/terminfo/r/rxvt-256color")).unwrap(), false);
    }
}