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* linenoise: error code distinguishes interrupt from eof.Kaz Kylheku2015-09-062-9/+55
| | | | | | | | | | | | | | | | | | In this commit, we introduce a persistent error variable stored in the lino_t structure, and functions to access it. * linenoise/linenoise.c (struct lino_state): New member, error. (enable_raw_mode): Don't set errno to ENOTTY; set linenoise error to lino_notty. (complete_line, edit, go_raw, linenoise, lino_hist_save, lino_hist_load): Set linenoise error before returning -1. (lino_get_error, lino_set_error): New functions. * linenoise/linenoise.h (enum lino_error, lino_error_t): New enum. (lino_get_error, lino_set_error): Declared.
* linenoise: use lino_t typedef everywhere.Kaz Kylheku2015-09-061-17/+17
| | | | | | | | | * linenoise.c (complete_line, sync_data_to_buf, refresh_singleline, refresh_multiline, refresh_line, edit_insert, edit_move_left, edit_move_right, edit_move_home, edit_move_end, edit_history_next, edit_delete, edit_backspace, edit_delete_prev_word): struct lino_state replaced with lino_t.
* linenoise: 27 and 9 to ESC and TAB.Kaz Kylheku2015-09-051-2/+2
| | | | | * linenoise/linenoise.c (complete_line): Use TAB and ESC instead of 9 and 27.
* linenoise: Ctrl-V verbatim insert.Kaz Kylheku2015-09-051-0/+12
| | | | | | * linenoise/linenoise.c (enum key_action): New enum constant, CTRL_V. (edit): Implement Ctrl-V.
* linenoise: remove useless comments, 8 -> CTRL_H.Kaz Kylheku2015-09-051-35/+34
| | | | | | | | | * linenoise/linenoise.c (enum key_action): Unused KEY_NULL removed. Removed uninformative comments next to self-explanatory enum constants. (edit): Removed uninformative comments next to cases based on enum key_action enum constants. Replaced 8 with CTRL_H.
* linenoise: separate display semantics from bufferKaz Kylheku2015-09-051-82/+116
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The linenoise edit buffer now shows a printed representation of underlying data. In this printed representation, multiple characters can denote a single physical character, so that a control code like 15 can be displayed as ^M. In the future, this will help with a Unicode-ization of linenoise. The actual edit routines now operate on the data array rather than buf, and the new function sync_data_to_buf is used to synchronize buf with data for the sake of refreshing the display. * linenoise/linenoise.c (LINENOISE_MAX_DISP): New variable. (struct lino_state): buf member becomes an array, so the display buffer is now in the structure, and not stack allocated in the linenoise function. New members data, dlen and dpos for tracking the underlying data. Also, the buflen member variable is gone. Uses of buflen are replaced with sizeof. (sync_data_to_buf): New static function. (complete_line): Pass ls->data to callback, rather than ls->buf. In the saving and restoring trick used when displaying completions, we must copy in the completion to the data array; we cannot swizzle a buffer pointer like before. The restoration of the state is simplified; just copy back the entire original. Lastly, when a completion is selected, it must go into the data array, and not buf. Here, there is a bugfix; it appears that refresh_line was not called; I had to add that call. (Did that work before this change?) (refresh_line): Call sync_data_to_buf before calling either refresh function. (edit_insert, edit_move_left, edit_move_right, edit_move_home, edit_move_end, edit_history_next, edit_backspace, edit_delete_prev_word): Operate on data array, dlen and dpos rather than buf, len and pos. (edit): Doesn't take buffer and length parameters any more. No need to initialize context structure members buf, or removed member buflen. New members dlen and dpos have to be initialized. Inlined edit operations now work with data array, rather than buf. (go_raw): Buffer and buflen arguments are gone. Non-tty code still allocates buffer on stack, but only in its local block. (linenoise): Do not instantiate local buffer for passing to go_raw, which doesn't take one any more. When finished, duplicate the string in the data array.
* linenoise: hard-coded stream in generate_beep.Kaz Kylheku2015-09-051-5/+4
| | | | | | | * linenoise/linenoise.c (generate_beep): Take line noise context argument and send BEL character to output file descriptor, rather than hardcoding to stderr. (complete_line): Pass context to generate_beep.
* linenoise: get rid of globals; everything in struct.Kaz Kylheku2015-09-043-182/+234
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * linenoise/linenoise.c (completion_callback, orig_termios, rawmode, mlmode, history_max_len, history_len, history): Global variables removed; moved into struct lino_state. (struct lino_state): New members next, prev. New members completion_callback, orig_termios, rawmode, mlmode, history_max_len, history_len, history. (lino_list): New static variable: dummy node for circular list of struct lino_state structures. (lino_set_multiline): Operate on structure rather than global variable. (enable_raw_mode, disable_raw_mode): Operate on structure. Use file descriptors from structures rather than inconsistent hard-coded use of STDIN_FILENO and the argument fd, which is gone. (lino_clear_screen): Obtain file descriptor from structure, rather than global. (complete_line): Operate on structure rather than globals. Pass context to completion callback. (lino_set_completion_cb): Store callback in structure rather than global. Store new context argument also. (reresh_line): Take mode from structure rather than global. (edit_insert, edit_move_end): Operate on struture rather than globals. (edit): Do not accept file descriptor arguments. Do not update ifd and ofd members of structure; just rely on these values to already be there, since the lino_make constructor puts them there. (lino_print_keycodes, go_raw): Operate on structure. (lino_make, lino_free): New functions. (lino_cleanup): New static function. (linenoise, free_hist): Operate on structure. (atexit_handler): Loop over all structures in global list, and clean up each one. (lino_hist_add, lino_list_set_max_len, lino_hist_save, lino_hist_load): Operate on structure. * linenoise/linenoise.h (lino_t): New typedef. (lino_compl_cb_t): Function type takes new context argument. (lino_set_completion_cb, linenoise, lino_hist_add, lino_hist_set_max, lino_his_save, lino_hist_load, lino_clear_screen, lino_set_multiline, lino_print_keycodes): Declarations updated. * linenoise/example.c (completion): Take new context argument, and ignore it. (main): Create linenoise context with lino_make, giving it the input and output file descriptor, and pass it to all functions.
* Bringing in Linenoise example.Kaz Kylheku2015-09-041-0/+75
| | | | * linenoise/example.c: New file.
* linenoise: tty read fix.Kaz Kylheku2015-09-041-1/+2
| | | | | | * linenoise/linenoise.c (edit): If 0 bytes is read from the tty for any reason, return -1 so that the linenoise function will return a null pointer rather than a blank line.
* Null out freed history elements.Kaz Kylheku2015-09-041-7/+15
| | | | | | | | | | * linenoise/linenoise.c (edit): Set freed element of history array to null. (free_hist): Null out all elements, and then the array pointer. (lino_hist_set_max_len): Calculate value of history_len variable in obviously correct way, based on amount of history preserved.
* linenoise: change naming to conform to project.Kaz Kylheku2015-09-042-146/+145
| | | | | | | | linenoise/linenoise.c, linenoise/linenoise.h: Renaming all camel-case identifiers to underscores. The verbose linenoise prefix becomes lino_. All caps enum tag gets lower cased. Static functions with linenoise prefix lose the prefix.
* Eliminate tabs from linenoise source.Kaz Kylheku2015-09-041-19/+19
| | | | | | * linenoise/linenoise.c (enum KEY_ACTION): Remove tabs from declaration. This is the only place in the file which has tabs.
* linenoise: compile as C++ and use checked allocator.Kaz Kylheku2015-09-042-27/+19
| | | | | | | | | | | | | | | | | * linenoise/linenoise.c (mem_t): New typedef, compatible with the one in lib.h, which we don't want to include. (chk_malloc, chk_realloc): External declarations added. (unsupported_term): Make element type const char *. (linenoiseAddCompletion): Use checked allocator, add casts, use the superior "sizeof *dest_pointer_var" expression in size calculations rather than "sizeof (maybe_wrong_type)". (abAppend, linenoiseHistoryAdd, linenoiseHistorySetMaxLen): Likewise. * linenoise/linenoise.h: Remove unnecessary include guards; we don't use them in this project. Remove 'extern "C"'; we don't require C linkage when compiling everything as C++.
* Compile and link linkenoise into txr; fix errors.Kaz Kylheku2015-09-041-9/+9
| | | | | | | | | | | * Makefile (OBJS): Add linenoise/linenoise.o. * linenoise/linenoise.c (linenoiseEditInsert, linenoiseEditMoveLeft, linenoiseEditMoveRight, linenoiseEditMoveEnd, linenoiseEditHistoryNext, linenoiseEditDelete, linenoiseEditBackspace, linenoiseEditDeletePrevWord): These de facto internal functions are switched from external to static.
* Add linenoise library.Kaz Kylheku2015-09-033-0/+1200
* LICENSE: Add Linenoise authors to the list of copyright holders. * linenoise/LICENSE: New file. * linenoise/linenoise.c: New file. * linenoise/linenoise.h: New file.
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