annotate src/commands.h @ 5776:65d65b52d608

Pass character count from coding systems to buffer insertion code. src/ChangeLog addition: 2014-01-16 Aidan Kehoe <kehoea@parhasard.net> Pass character count information from the no-conversion and unicode coding systems to the buffer insertion code, making #'find-file on large buffers a little snappier (if ERROR_CHECK_TEXT is not defined). * file-coding.c: * file-coding.c (coding_character_tell): New. * file-coding.c (conversion_coding_stream_description): New. * file-coding.c (no_conversion_convert): Update characters_seen when decoding. * file-coding.c (no_conversion_character_tell): New. * file-coding.c (lstream_type_create_file_coding): Create the no_conversion type with data. * file-coding.c (coding_system_type_create): Make the character_tell method available here. * file-coding.h: * file-coding.h (struct coding_system_methods): Add a new character_tell() method, passing charcount information from the coding systems to the buffer code, avoiding duplicate bytecount-to-charcount work especially with large buffers. * fileio.c (Finsert_file_contents_internal): Update this to pass charcount information to buffer_insert_string_1(), if that is available from the lstream code. * insdel.c: * insdel.c (buffer_insert_string_1): Add a new CCLEN argument, giving the character count of the string to insert. It can be -1 to indicate that te function should work it out itself using bytecount_to_charcount(), as it used to. * insdel.c (buffer_insert_raw_string_1): * insdel.c (buffer_insert_lisp_string_1): * insdel.c (buffer_insert_ascstring_1): * insdel.c (buffer_insert_emacs_char_1): * insdel.c (buffer_insert_from_buffer_1): * insdel.c (buffer_replace_char): Update these functions to use the new calling convention. * insdel.h: * insdel.h (buffer_insert_string): Update this header to reflect the new buffer_insert_string_1() argument. * lstream.c (Lstream_character_tell): New. Return the number of characters *read* and seen by the consumer so far, taking into account the unget buffer, and buffered reading. * lstream.c (Lstream_unread): Update unget_character_count here as appropriate. * lstream.c (Lstream_rewind): Reset unget_character_count here too. * lstream.h: * lstream.h (struct lstream): Provide the character_tell method, add a new field, unget_character_count, giving the number of characters ever passed to Lstream_unread(). Declare Lstream_character_tell(). Make Lstream_ungetc(), which happens to be unused, an inline function rather than a macro, in the course of updating it to modify unget_character_count. * print.c (output_string): Use the new argument to buffer_insert_string_1(). * tests.c: * tests.c (Ftest_character_tell): New test function. * tests.c (syms_of_tests): Make it available. * unicode.c: * unicode.c (struct unicode_coding_stream): * unicode.c (unicode_character_tell): New method. * unicode.c (unicode_convert): Update the character counter as appropriate. * unicode.c (coding_system_type_create_unicode): Make the character_tell method available.
author Aidan Kehoe <kehoea@parhasard.net>
date Thu, 16 Jan 2014 16:27:52 +0000
parents 308d34e9f07d
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1 /* Definitions needed by most editing commands.
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2 Copyright (C) 1985-1994 Free Software Foundation, Inc.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software: you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation, either version 3 of the License, or (at your
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9 option) any later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */
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18
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19 /* Synched up with: FSF 19.30. */
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20
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21 #ifndef INCLUDED_commands_h_
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22 #define INCLUDED_commands_h_
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23
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24 #if 0 /* FSFmacs */
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25 #define Ctl(c) ((c)&037)
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26 #endif
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27
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28 /* bunches of FSF keymap and minibuffer stuff not here (in Lisp) */
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29
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30 extern Lisp_Object Vlast_command_event;
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31
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32 extern Lisp_Object Vlast_input_event;
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33
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34 /* These next two for compatibility; they are V... because they can be
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35 nil. (Many FSFmacs equivalent variables incorrectly omit the V
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36 even though they are Lisp_Objects.) */
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37 /* Last character of last key sequence. */
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38 extern Lisp_Object Vlast_command_char;
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39
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40 extern Lisp_Object Vlast_input_char;
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41
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42 #if 0 /* FSFmacs */
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43 /* Last input character read as a command, not counting menus
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44 reached by the mouse. */
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45 extern Lisp_Object Vlast_nonmenu_event;
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46 #endif
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47
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48 #if 0 /* Local to event-stream.c */
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49 /* List of command events to be re-read, or Qnil. */
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50 extern Lisp_Object Vunread_command_events;
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51 #endif
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53 #if 0 /* FSFmacs */
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54 /* Command char event to be re-read, or -1 if none.
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55 Setting this is obsolete, but some things should still check it. */
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56 extern int unread_command_char;
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57 #endif
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58
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59 /* Last command executed by the editor command loop, not counting
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60 commands that set the prefix argument. */
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61
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62 extern Lisp_Object Vlast_command;
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63
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64 /* The command being executed by the command loop.
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65 Commands may set this, and the value set will be copied into
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66 Vlast_command instead of the actual command. */
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67 extern Lisp_Object Vthis_command;
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68
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69 #if 0 /* FSFmacs */
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70 /* If not Qnil, this is a switch-frame event which we decided to put
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71 off until the end of a key sequence. This should be read as the
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72 next command input, after any Vunread_command_events.
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73
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74 read_key_sequence uses this to delay switch-frame events until the
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75 end of the key sequence; Fread_char uses it to put off switch-frame
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76 events until a non-ASCII event is acceptable as input. */
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77 extern Lisp_Object unread_switch_frame;
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78 #endif
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79
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80 #if 0 /* Local to event-stream.c */
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81 /* The value of point when the last command was executed. */
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82 extern int last_point_position;
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83
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84 /* The buffer that was current when the last command was started. */
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85 extern Lisp_Object last_point_position_buffer;
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86 #endif
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87
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88 /* This is so incredibly losing that it's been completely eliminated
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89 from the code. Trust me, there are cleaner, safer ways of
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90 achieving the same functionality (e.g. use select()). */
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91 /* extern int immediate_quit; Nonzero means ^G can quit instantly */
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92
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93 /* Nonzero if input is coming from the keyboard */
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94
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95 #define INTERACTIVE (NILP (Vexecuting_macro) && !noninteractive)
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96
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97 /* Set this nonzero to force reconsideration of modeline. */
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98
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99 extern int modeline_changed;
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100
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101 extern Lisp_Object recent_keys_ring;
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102 extern int recent_keys_ring_index;
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103
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104 /* #ifndef LISP_COMMAND_LOOP */
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105 extern Lisp_Object Vtop_level;
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106 /* #else */
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107 extern Lisp_Object Vcommand_loop;
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108 /* #endif */
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109 DECLARE_DOESNT_RETURN (initial_command_loop (Lisp_Object));
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110 DECLARE_DOESNT_RETURN_TYPE (Lisp_Object,
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111 call_command_loop (Lisp_Object catch_errors));
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112 extern Fixnum command_loop_level;
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113
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114 extern Lisp_Object Vkeyboard_translate_table;
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115 extern Lisp_Object Vlast_input_time;
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116 extern Lisp_Object Vcurrent_mouse_event;
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117
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118 extern int zmacs_regions;
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119 extern int zmacs_region_active_p;
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120 extern int zmacs_region_stays;
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121 void zmacs_update_region (void);
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122 void zmacs_deactivate_region (void);
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123 Lisp_Object zmacs_region_buffer (void);
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124
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125 extern Lisp_Object Vthis_command_keys; /* event-stream.c */
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126
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127 #endif /* INCLUDED_commands_h_ */