[7d4fbcd] | 1 | #include "owl.h" |
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| 2 | #include <stdlib.h> |
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| 3 | #include <unistd.h> |
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| 4 | #include <string.h> |
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[10b866d] | 5 | #include <ctype.h> |
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[7d4fbcd] | 6 | |
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[ebf0128] | 7 | #define VALID_EXCURSION (0x9a2b4729) |
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| 8 | |
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[a88f35a] | 9 | typedef struct _owl_editwin_excursion { /*noproto*/ |
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[ebf0128] | 10 | int valid; |
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| 11 | int index; |
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[16cfd12a] | 12 | int mark; |
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[ebf0128] | 13 | int goal_column; |
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| 14 | int lock; |
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[a88f35a] | 15 | struct _owl_editwin_excursion *next; |
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[ebf0128] | 16 | } oe_excursion; |
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| 17 | |
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[a556caa] | 18 | struct _owl_editwin { /*noproto*/ |
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| 19 | char *buff; |
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| 20 | owl_history *hist; |
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| 21 | int bufflen; |
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| 22 | int allocated; |
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| 23 | int index; |
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[16cfd12a] | 24 | int mark; |
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[a60edf2] | 25 | char *killbuf; |
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[a556caa] | 26 | int goal_column; |
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| 27 | int topindex; |
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[ebf0128] | 28 | int cursorx; |
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[a556caa] | 29 | int winlines, wincols, fillcol, wrapcol; |
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| 30 | WINDOW *curswin; |
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| 31 | int style; |
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| 32 | int lock; |
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| 33 | int dotsend; |
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| 34 | int echochar; |
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[ebf0128] | 35 | oe_excursion *excursions; |
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[a556caa] | 36 | |
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| 37 | void (*callback)(struct _owl_editwin*); |
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[1b1cd2c] | 38 | void (*destroy_cbdata)(void *); |
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[a556caa] | 39 | void *cbdata; |
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| 40 | }; |
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| 41 | |
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[e20d8179] | 42 | static void oe_reframe(owl_editwin *e); |
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[bab52da] | 43 | static void oe_save_excursion(owl_editwin *e, oe_excursion *x); |
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[ebf0128] | 44 | static void oe_release_excursion(owl_editwin *e, oe_excursion *x); |
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[bab52da] | 45 | static void oe_restore_excursion(owl_editwin *e, oe_excursion *x); |
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[a60edf2] | 46 | static void oe_restore_mark_only(owl_editwin *e, oe_excursion *x); |
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[ebf0128] | 47 | static int oe_char_width(gunichar c, int column); |
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[16cfd12a] | 48 | static int oe_region_width(owl_editwin *e, int start, int end, int width); |
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[7149832] | 49 | static int oe_find_display_line(owl_editwin *e, int *x, int index, int *hard); |
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[ebf0128] | 50 | static void oe_insert_char(owl_editwin *e, gunichar c); |
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[d625cfd] | 51 | static int owl_editwin_limit_maxcols(int width, int cols); |
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[bab52da] | 52 | static int owl_editwin_check_dotsend(owl_editwin *e); |
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[e19eb97] | 53 | static int owl_editwin_is_char_in(owl_editwin *e, const char *set); |
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[bab52da] | 54 | static gunichar owl_editwin_get_char_at_point(owl_editwin *e); |
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[e19eb97] | 55 | static int owl_editwin_replace_internal(owl_editwin *e, int replace, const char *s); |
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| 56 | static const char *oe_copy_buf(owl_editwin *e, const char *buf, int len); |
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[a60edf2] | 57 | static int oe_copy_region(owl_editwin *e); |
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[77f605d] | 58 | static char *oe_chunk(owl_editwin *e, int start, int end); |
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[1b1cd2c] | 59 | static void oe_destroy_cbdata(owl_editwin *e); |
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[bab52da] | 60 | |
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[5b5f3e6] | 61 | #define INCR 4096 |
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[7d4fbcd] | 62 | |
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[a556caa] | 63 | #define WHITESPACE " \n\t" |
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| 64 | |
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[38cc669] | 65 | static owl_editwin *owl_editwin_allocate(void) |
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[bab52da] | 66 | { |
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[8321cb7] | 67 | owl_editwin *e; |
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| 68 | e = owl_malloc(sizeof(owl_editwin)); |
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| 69 | memset(e, 0, sizeof(*e)); |
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| 70 | return e; |
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[a556caa] | 71 | } |
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| 72 | |
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[30bb10a] | 73 | void owl_editwin_delete(owl_editwin *e) |
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[6211c76] | 74 | { |
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| 75 | owl_free(e->buff); |
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| 76 | owl_free(e->killbuf); |
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| 77 | /* just in case someone forgot to clean up */ |
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| 78 | while (e->excursions) { |
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| 79 | oe_release_excursion(e, e->excursions); |
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| 80 | } |
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[38cc669] | 81 | oe_destroy_cbdata(e); |
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[6211c76] | 82 | |
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| 83 | owl_free(e); |
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| 84 | } |
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| 85 | |
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[bab52da] | 86 | static inline void oe_set_index(owl_editwin *e, int index) |
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| 87 | { |
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[ebf0128] | 88 | if (index != e->index) { |
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| 89 | e->goal_column = -1; |
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| 90 | e->cursorx = -1; |
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| 91 | } |
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[521bc84] | 92 | e->index = index; |
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| 93 | } |
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| 94 | |
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[7f0c26f] | 95 | static inline void oe_set_mark(owl_editwin *e, int mark) |
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| 96 | { |
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| 97 | e->mark = mark; |
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| 98 | } |
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| 99 | |
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| 100 | void owl_editwin_set_mark(owl_editwin *e) |
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| 101 | { |
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| 102 | oe_set_mark(e, e->index); |
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| 103 | /* owl_function_makemsg("Mark set."); */ |
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| 104 | } |
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| 105 | |
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[38cc669] | 106 | static void _owl_editwin_init(owl_editwin *e, |
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| 107 | WINDOW *win, |
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| 108 | int winlines, |
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| 109 | int wincols, |
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| 110 | int style, |
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| 111 | owl_history *hist) |
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[c9334b1] | 112 | { |
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[e20d8179] | 113 | e->buff=owl_malloc(INCR); |
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[7d4fbcd] | 114 | e->buff[0]='\0'; |
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| 115 | e->bufflen=0; |
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[10b866d] | 116 | e->hist=hist; |
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[7d4fbcd] | 117 | e->allocated=INCR; |
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[521bc84] | 118 | oe_set_index(e, 0); |
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[7f0c26f] | 119 | oe_set_mark(e, -1); |
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[a60edf2] | 120 | if (e->killbuf != NULL) |
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[27f6487] | 121 | owl_free(e->killbuf); |
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[a60edf2] | 122 | e->killbuf = NULL; |
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[a556caa] | 123 | e->goal_column = -1; |
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[ebf0128] | 124 | e->cursorx = -1; |
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| 125 | e->topindex = 0; |
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| 126 | e->excursions = NULL; |
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| 127 | owl_editwin_set_curswin(e, win, winlines, wincols); |
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[7d4fbcd] | 128 | e->style=style; |
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| 129 | if ((style!=OWL_EDITWIN_STYLE_MULTILINE) && |
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| 130 | (style!=OWL_EDITWIN_STYLE_ONELINE)) { |
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| 131 | e->style=OWL_EDITWIN_STYLE_MULTILINE; |
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| 132 | } |
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| 133 | e->lock=0; |
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| 134 | e->dotsend=0; |
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[c9334b1] | 135 | e->echochar='\0'; |
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[e74c01c] | 136 | |
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[7d4fbcd] | 137 | if (win) werase(win); |
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| 138 | } |
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| 139 | |
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[38cc669] | 140 | owl_editwin *owl_editwin_new(WINDOW *win, int winlines, int wincols, int style, owl_history *hist) |
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| 141 | { |
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| 142 | owl_editwin *e = owl_editwin_allocate(); |
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| 143 | |
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| 144 | _owl_editwin_init(e, win, winlines, wincols, style, hist); |
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| 145 | return e; |
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| 146 | } |
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| 147 | |
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[c9334b1] | 148 | void owl_editwin_set_curswin(owl_editwin *e, WINDOW *w, int winlines, int wincols) |
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| 149 | { |
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[7d4fbcd] | 150 | e->curswin=w; |
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| 151 | e->winlines=winlines; |
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| 152 | e->wincols=wincols; |
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[9a6cc40] | 153 | e->fillcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxfillcols(&g)); |
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| 154 | e->wrapcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxwrapcols(&g)); |
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[7d4fbcd] | 155 | } |
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| 156 | |
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[c9334b1] | 157 | /* echo the character 'ch' for each normal character keystroke, |
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| 158 | * excepting locktext. This is useful for entering passwords etc. If |
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| 159 | * ch=='\0' characters are echo'd normally |
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| 160 | */ |
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| 161 | void owl_editwin_set_echochar(owl_editwin *e, int ch) |
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| 162 | { |
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| 163 | e->echochar=ch; |
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| 164 | } |
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| 165 | |
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| 166 | WINDOW *owl_editwin_get_curswin(owl_editwin *e) |
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| 167 | { |
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[060b3b4] | 168 | return(e->curswin); |
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[7d4fbcd] | 169 | } |
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| 170 | |
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[c9334b1] | 171 | owl_history *owl_editwin_get_history(owl_editwin *e) |
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| 172 | { |
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[060b3b4] | 173 | return(e->hist); |
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[10b866d] | 174 | } |
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| 175 | |
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[c9334b1] | 176 | void owl_editwin_set_dotsend(owl_editwin *e) |
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| 177 | { |
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[7d4fbcd] | 178 | e->dotsend=1; |
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| 179 | } |
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| 180 | |
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[bab52da] | 181 | void owl_editwin_set_callback(owl_editwin *e, void (*cb)(owl_editwin*)) |
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| 182 | { |
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[e74c01c] | 183 | e->callback = cb; |
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| 184 | } |
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| 185 | |
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[bab52da] | 186 | void (*owl_editwin_get_callback(owl_editwin *e))(owl_editwin*) |
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| 187 | { |
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[e74c01c] | 188 | return e->callback; |
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| 189 | } |
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| 190 | |
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[1b1cd2c] | 191 | static void oe_destroy_cbdata(owl_editwin *e) { |
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| 192 | if (e->destroy_cbdata) |
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| 193 | e->destroy_cbdata(e->cbdata); |
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| 194 | e->cbdata = NULL; |
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| 195 | e->destroy_cbdata = NULL; |
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| 196 | } |
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| 197 | |
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| 198 | void owl_editwin_set_cbdata(owl_editwin *e, void *data, void (*destroy)(void *)) |
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[bab52da] | 199 | { |
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[1b1cd2c] | 200 | oe_destroy_cbdata(e); |
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[e74c01c] | 201 | e->cbdata = data; |
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[1b1cd2c] | 202 | e->destroy_cbdata = destroy; |
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[e74c01c] | 203 | } |
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| 204 | |
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[a556caa] | 205 | void *owl_editwin_get_cbdata(owl_editwin *e) { |
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[e74c01c] | 206 | return e->cbdata; |
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| 207 | } |
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| 208 | |
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| 209 | void owl_editwin_do_callback(owl_editwin *e) { |
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| 210 | void (*cb)(owl_editwin*); |
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| 211 | cb=owl_editwin_get_callback(e); |
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| 212 | if(!cb) { |
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| 213 | owl_function_error("Internal error: No editwin callback!"); |
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| 214 | } else { |
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[af1920fd] | 215 | /* owl_function_error("text: |%s|", owl_editwin_get_text(e)); */ |
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[e74c01c] | 216 | cb(e); |
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| 217 | } |
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| 218 | } |
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| 219 | |
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[d625cfd] | 220 | static int owl_editwin_limit_maxcols(int width, int cols) |
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[c9334b1] | 221 | { |
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[d625cfd] | 222 | if (cols == 0) |
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| 223 | return width; |
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| 224 | return cols; |
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[d36f2cb] | 225 | } |
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| 226 | |
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[c9334b1] | 227 | /* set text to be 'locked in' at the beginning of the buffer, any |
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| 228 | * previous text (including locked text) will be overwritten |
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| 229 | */ |
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[e19eb97] | 230 | void owl_editwin_set_locktext(owl_editwin *e, const char *text) |
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[c9334b1] | 231 | { |
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[521bc84] | 232 | oe_set_index(e, 0); |
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[5b5f3e6] | 233 | e->lock = 0; |
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| 234 | owl_editwin_replace(e, e->bufflen, text); |
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| 235 | e->buff[e->bufflen] = 0; |
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| 236 | e->lock=e->bufflen; |
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[521bc84] | 237 | oe_set_index(e, e->lock); |
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[2ee9e8d] | 238 | owl_editwin_redisplay(e); |
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[7d4fbcd] | 239 | } |
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| 240 | |
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[c9334b1] | 241 | int owl_editwin_get_style(owl_editwin *e) |
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| 242 | { |
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[7d4fbcd] | 243 | return(e->style); |
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| 244 | } |
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| 245 | |
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[c9334b1] | 246 | /* clear all text except for locktext and put the cursor at the |
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| 247 | * beginning |
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| 248 | */ |
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| 249 | void owl_editwin_clear(owl_editwin *e) |
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| 250 | { |
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| 251 | |
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[6073462] | 252 | int lock = e->lock; |
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[10b866d] | 253 | int dotsend=e->dotsend; |
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[7d4fbcd] | 254 | char *locktext=NULL; |
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[cc6f009] | 255 | char echochar=e->echochar; |
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[10b866d] | 256 | |
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[6073462] | 257 | if (lock > 0) { |
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[5b5f3e6] | 258 | locktext = owl_malloc(lock+1); |
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| 259 | strncpy(locktext, e->buff, lock); |
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| 260 | locktext[lock] = 0; |
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[7d4fbcd] | 261 | } |
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| 262 | |
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| 263 | owl_free(e->buff); |
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[38cc669] | 264 | _owl_editwin_init(e, e->curswin, e->winlines, e->wincols, e->style, e->hist); |
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[7d4fbcd] | 265 | |
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| 266 | if (lock > 0) { |
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| 267 | owl_editwin_set_locktext(e, locktext); |
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| 268 | } |
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[10b866d] | 269 | if (dotsend) { |
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| 270 | owl_editwin_set_dotsend(e); |
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| 271 | } |
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[cc6f009] | 272 | if (echochar) { |
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| 273 | owl_editwin_set_echochar(e, echochar); |
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| 274 | } |
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[7d4fbcd] | 275 | |
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[5b5f3e6] | 276 | if (locktext) |
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| 277 | owl_free(locktext); |
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[6073462] | 278 | |
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[521bc84] | 279 | oe_set_index(e, lock); |
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[7d4fbcd] | 280 | } |
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| 281 | |
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[c9334b1] | 282 | void owl_editwin_recenter(owl_editwin *e) |
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| 283 | { |
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[a556caa] | 284 | e->topindex = -1; |
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| 285 | } |
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[e20d8179] | 286 | |
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[a0fbdee] | 287 | static void oe_save_excursion(owl_editwin *e, oe_excursion *x) |
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| 288 | { |
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| 289 | x->index = e->index; |
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[7f0c26f] | 290 | x->mark = e->mark; |
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[a0fbdee] | 291 | x->goal_column = e->goal_column; |
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| 292 | x->lock = e->lock; |
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[ebf0128] | 293 | |
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| 294 | x->valid = VALID_EXCURSION; |
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| 295 | x->next = e->excursions; |
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| 296 | e->excursions = x; |
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| 297 | } |
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| 298 | |
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| 299 | static void oe_release_excursion(owl_editwin *e, oe_excursion *x) |
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| 300 | { |
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[a85d225] | 301 | oe_excursion **px; |
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[ebf0128] | 302 | |
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| 303 | x->valid = 0; |
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[a85d225] | 304 | for (px = &e->excursions; *px != NULL; px = &(*px)->next) |
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| 305 | if (*px == x) { |
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| 306 | *px = x->next; |
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| 307 | return; |
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| 308 | } |
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| 309 | abort(); |
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[a0fbdee] | 310 | } |
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| 311 | |
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| 312 | static void oe_restore_excursion(owl_editwin *e, oe_excursion *x) |
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| 313 | { |
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[ebf0128] | 314 | if (x->valid == VALID_EXCURSION) { |
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| 315 | oe_set_index(e, x->index); |
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| 316 | e->goal_column = x->goal_column; |
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[7f0c26f] | 317 | e->mark = x->mark; |
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[ebf0128] | 318 | e->lock = x->lock; |
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| 319 | |
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| 320 | oe_release_excursion(e, x); |
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| 321 | } |
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[a0fbdee] | 322 | } |
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| 323 | |
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[a60edf2] | 324 | static void oe_restore_mark_only(owl_editwin *e, oe_excursion *x) |
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| 325 | { |
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| 326 | if (x->valid == VALID_EXCURSION) { |
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| 327 | e->mark = x->mark; |
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| 328 | |
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| 329 | oe_release_excursion(e, x); |
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| 330 | } |
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| 331 | } |
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| 332 | |
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[a88f35a] | 333 | /* External interface to oe_save_excursion */ |
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| 334 | owl_editwin_excursion *owl_editwin_begin_excursion(owl_editwin *e) |
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| 335 | { |
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| 336 | owl_editwin_excursion *x = owl_malloc(sizeof *x); |
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| 337 | oe_save_excursion(e, x); |
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| 338 | return x; |
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| 339 | } |
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| 340 | |
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| 341 | void owl_editwin_end_excursion(owl_editwin *e, owl_editwin_excursion *x) |
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| 342 | { |
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| 343 | oe_restore_excursion(e, x); |
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| 344 | owl_free(x); |
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| 345 | } |
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| 346 | |
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[e19eb97] | 347 | static inline const char *oe_next_point(owl_editwin *e, const char *p) |
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[e20d8179] | 348 | { |
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[e19eb97] | 349 | const char *boundary = e->buff + e->bufflen + 1; |
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| 350 | const char *q; |
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[e20d8179] | 351 | |
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| 352 | q = g_utf8_find_next_char(p, boundary); |
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| 353 | while (q && g_unichar_ismark(g_utf8_get_char(q))) |
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| 354 | q = g_utf8_find_next_char(q, boundary); |
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| 355 | |
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| 356 | if (q == p) |
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| 357 | return NULL; |
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| 358 | return q; |
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| 359 | } |
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| 360 | |
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[e19eb97] | 361 | static inline const char *oe_prev_point(owl_editwin *e, const char *p) |
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[e20d8179] | 362 | { |
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[e19eb97] | 363 | const char *boundary = e->buff + e->lock; |
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[e20d8179] | 364 | |
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| 365 | p = g_utf8_find_prev_char(boundary, p); |
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| 366 | while (p && g_unichar_ismark(g_utf8_get_char(p))) |
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| 367 | p = g_utf8_find_prev_char(boundary, p); |
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| 368 | |
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| 369 | return p; |
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| 370 | } |
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| 371 | |
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[ebf0128] | 372 | static int oe_char_width(gunichar c, int column) |
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| 373 | { |
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| 374 | int cw; |
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| 375 | |
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| 376 | if (c == 9) /* TAB */ |
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| 377 | return TABSIZE - column % TABSIZE; |
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| 378 | |
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| 379 | cw = mk_wcwidth(c); |
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| 380 | |
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| 381 | if (cw < 0) /* control characters */ |
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| 382 | cw = 0; |
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| 383 | |
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| 384 | return cw; |
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| 385 | } |
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| 386 | |
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[7149832] | 387 | static int oe_find_display_line(owl_editwin *e, int *x, int index, int *hard) |
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[19f765d] | 388 | { |
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| 389 | int width = 0, cw; |
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[ebf0128] | 390 | gunichar c; |
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[e19eb97] | 391 | const char *p; |
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[19f765d] | 392 | |
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[77d4402] | 393 | while(1) { |
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| 394 | /* note the position of the dot */ |
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[2021bea] | 395 | if (x != NULL && index == e->index && width < e->wincols) |
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[19f765d] | 396 | *x = width; |
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[77d4402] | 397 | |
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[19f765d] | 398 | /* get the current character */ |
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| 399 | c = g_utf8_get_char(e->buff + index); |
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| 400 | |
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| 401 | /* figure out how wide it is */ |
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[ebf0128] | 402 | cw = oe_char_width(c, width); |
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[19f765d] | 403 | |
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[7ce30a9] | 404 | if (width + cw > e->wincols - 1) { |
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[77d4402] | 405 | if (x != NULL && *x == width) |
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| 406 | *x = -1; |
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[7149832] | 407 | if (hard != NULL) *hard = 0; |
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[19f765d] | 408 | break; |
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[77d4402] | 409 | } |
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[19f765d] | 410 | width += cw; |
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| 411 | |
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| 412 | if (c == '\n') { |
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[77d4402] | 413 | if (width < e->wincols) |
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| 414 | ++index; /* skip the newline */ |
---|
[7149832] | 415 | if (hard != NULL) *hard = 1; |
---|
[19f765d] | 416 | break; |
---|
| 417 | } |
---|
| 418 | |
---|
| 419 | /* find the next character */ |
---|
| 420 | p = oe_next_point(e, e->buff + index); |
---|
| 421 | if (p == NULL) { /* we ran off the end */ |
---|
| 422 | if (x != NULL && e->index > index) |
---|
| 423 | *x = width + 1; |
---|
[7149832] | 424 | if (hard != NULL) *hard = 1; |
---|
[19f765d] | 425 | break; |
---|
| 426 | } |
---|
| 427 | index = p - e->buff; |
---|
[cedc95c] | 428 | |
---|
[19f765d] | 429 | } |
---|
| 430 | return index; |
---|
| 431 | } |
---|
| 432 | |
---|
[e20d8179] | 433 | static void oe_reframe(owl_editwin *e) { |
---|
[cedc95c] | 434 | oe_excursion x; |
---|
[460fbe8] | 435 | int goal = 1 + e->winlines / 2; |
---|
[cedc95c] | 436 | int index; |
---|
| 437 | int count = 0; |
---|
| 438 | int n, i; |
---|
| 439 | int last; |
---|
| 440 | |
---|
| 441 | oe_save_excursion(e, &x); |
---|
| 442 | /* step back line-by-line through the buffer until we have >= goal lines of |
---|
| 443 | display text */ |
---|
| 444 | e->lock = 0; /* we can (must) tread on the locktext */ |
---|
| 445 | |
---|
| 446 | last = -1; |
---|
| 447 | while (count < goal) { |
---|
| 448 | index = e->index; |
---|
| 449 | owl_editwin_move_to_beginning_of_line(e); |
---|
| 450 | if (last == e->index) |
---|
| 451 | break; |
---|
| 452 | last = e->index; |
---|
| 453 | for (n = 0, i = e->index; i < index; n++) |
---|
[7149832] | 454 | i = oe_find_display_line(e, NULL, i, NULL); |
---|
[cedc95c] | 455 | count += n == 0 ? 1 : n; |
---|
| 456 | if (count < goal) |
---|
| 457 | owl_editwin_point_move(e, -1); |
---|
| 458 | } |
---|
| 459 | |
---|
| 460 | e->topindex = e->index; |
---|
[521bc84] | 461 | /* if we overshot, backtrack */ |
---|
| 462 | for (n = 0; n < (count - goal); n++) |
---|
[7149832] | 463 | e->topindex = oe_find_display_line(e, NULL, e->topindex, NULL); |
---|
[cedc95c] | 464 | |
---|
| 465 | oe_restore_excursion(e, &x); |
---|
[7d4fbcd] | 466 | } |
---|
| 467 | |
---|
[3e36085] | 468 | static void oe_addnec(owl_editwin *e, int count) |
---|
| 469 | { |
---|
| 470 | int i; |
---|
| 471 | |
---|
| 472 | for (i = 0; i < count; i++) |
---|
| 473 | waddch(e->curswin, e->echochar); |
---|
| 474 | } |
---|
| 475 | |
---|
| 476 | static void oe_mvaddnec(owl_editwin *e, int y, int x, int count) |
---|
| 477 | { |
---|
| 478 | wmove(e->curswin, y, x); |
---|
| 479 | oe_addnec(e, count); |
---|
| 480 | } |
---|
| 481 | |
---|
[c9334b1] | 482 | /* regenerate the text on the curses window */ |
---|
[2ee9e8d] | 483 | void owl_editwin_redisplay(owl_editwin *e) |
---|
[c9334b1] | 484 | { |
---|
[7149832] | 485 | int x = -1, y = -1, t, hard; |
---|
[77d4402] | 486 | int line, index, lineindex, times = 0; |
---|
[7d4fbcd] | 487 | |
---|
[bd1a1ae] | 488 | do { |
---|
[cedc95c] | 489 | werase(e->curswin); |
---|
[36a16fc] | 490 | |
---|
| 491 | if (e->topindex == -1 || e->index < e->topindex) |
---|
[e20d8179] | 492 | oe_reframe(e); |
---|
| 493 | |
---|
[bd1a1ae] | 494 | line = 0; |
---|
| 495 | index = e->topindex; |
---|
| 496 | while(line < e->winlines) { |
---|
| 497 | lineindex = index; |
---|
[19f765d] | 498 | t = -1; |
---|
[7149832] | 499 | index = oe_find_display_line(e, &t, lineindex, &hard); |
---|
[19f765d] | 500 | if (x == -1 && t != -1) |
---|
| 501 | x = t, y = line; |
---|
[3e36085] | 502 | if (index - lineindex) { |
---|
| 503 | if (!e->echochar) |
---|
| 504 | mvwaddnstr(e->curswin, line, 0, |
---|
| 505 | e->buff + lineindex, |
---|
| 506 | index - lineindex); |
---|
| 507 | else { |
---|
| 508 | if(lineindex < e->lock) { |
---|
| 509 | mvwaddnstr(e->curswin, line, 0, |
---|
| 510 | e->buff + lineindex, |
---|
| 511 | MIN(index - lineindex, |
---|
| 512 | e->lock - lineindex)); |
---|
| 513 | if (e->lock < index) |
---|
| 514 | oe_addnec(e, |
---|
| 515 | oe_region_width(e, e->lock, index, |
---|
| 516 | oe_region_width(e, lineindex, e->lock, 0))); |
---|
| 517 | } else |
---|
[7141d75] | 518 | oe_mvaddnec(e, line, 0, oe_region_width(e, lineindex, index, 0)); |
---|
[3e36085] | 519 | } |
---|
[7149832] | 520 | if (!hard) |
---|
| 521 | waddch(e->curswin, '\\'); |
---|
[3e36085] | 522 | } |
---|
[bd1a1ae] | 523 | line++; |
---|
[a556caa] | 524 | } |
---|
[19f765d] | 525 | if (x == -1) |
---|
[bd1a1ae] | 526 | e->topindex = -1; /* force a reframe */ |
---|
[77d4402] | 527 | times++; |
---|
| 528 | } while(x == -1 && times < 3); |
---|
[e20d8179] | 529 | |
---|
[19f765d] | 530 | wmove(e->curswin, y, x); |
---|
[ebf0128] | 531 | e->cursorx = x; |
---|
[7d4fbcd] | 532 | } |
---|
| 533 | |
---|
[7f0c26f] | 534 | static inline void oe_fixup(int *target, int start, int end, int change) { |
---|
| 535 | if (*target > start) { |
---|
[0d9c90c] | 536 | if (*target <= end) |
---|
[8459609] | 537 | *target = end + change; |
---|
[7f0c26f] | 538 | else |
---|
| 539 | *target += change; |
---|
| 540 | } |
---|
| 541 | } |
---|
| 542 | |
---|
[e19eb97] | 543 | int owl_editwin_replace_region(owl_editwin *e, const char *s) |
---|
[a88f35a] | 544 | { |
---|
| 545 | oe_excursion x; |
---|
| 546 | int ret; |
---|
[6e58ff2] | 547 | |
---|
| 548 | if (e->mark == -1) { |
---|
| 549 | owl_function_error("The mark is unset, there is no region to replace."); |
---|
| 550 | return 0; |
---|
| 551 | } |
---|
| 552 | |
---|
[5ebc202] | 553 | oe_save_excursion(e, &x); |
---|
[a88f35a] | 554 | |
---|
| 555 | if(e->index > e->mark) { |
---|
| 556 | owl_editwin_exchange_point_and_mark(e); |
---|
| 557 | } |
---|
| 558 | |
---|
| 559 | ret = owl_editwin_replace_internal(e, e->mark - e->index, s); |
---|
| 560 | |
---|
| 561 | oe_restore_excursion(e, &x); |
---|
| 562 | |
---|
| 563 | return ret; |
---|
| 564 | } |
---|
| 565 | |
---|
[19a023f] | 566 | /* replace 'replace' characters at the point with s, returning the change in size */ |
---|
[e19eb97] | 567 | int owl_editwin_replace(owl_editwin *e, int replace, const char *s) |
---|
[ebf0128] | 568 | { |
---|
[19a023f] | 569 | int start, end, i; |
---|
[e19eb97] | 570 | const char *p; |
---|
[e9bb404] | 571 | |
---|
[5b5f3e6] | 572 | if (!g_utf8_validate(s, -1, NULL)) { |
---|
| 573 | owl_function_debugmsg("owl_editwin_insert_string: received non-utf-8 string."); |
---|
[ebf0128] | 574 | return 0; |
---|
[47519e1b] | 575 | } |
---|
| 576 | |
---|
[5b5f3e6] | 577 | start = e->index; |
---|
| 578 | for (i = 0, p = e->buff + start; i < replace && p != NULL; i++) |
---|
| 579 | p = oe_next_point(e, p); |
---|
| 580 | if (p != NULL) |
---|
| 581 | end = p - e->buff; |
---|
| 582 | else |
---|
| 583 | end = e->bufflen; |
---|
| 584 | |
---|
[19a023f] | 585 | return owl_editwin_replace_internal(e, end - start, s); |
---|
| 586 | } |
---|
| 587 | |
---|
[e19eb97] | 588 | static int owl_editwin_replace_internal(owl_editwin *e, int replace, const char *s) |
---|
[19a023f] | 589 | { |
---|
| 590 | int start, end, free, need, size, change; |
---|
| 591 | oe_excursion *x; |
---|
| 592 | |
---|
| 593 | start = e->index; |
---|
| 594 | end = start + replace; |
---|
| 595 | |
---|
[5b5f3e6] | 596 | free = e->allocated - e->bufflen + end - start; |
---|
| 597 | |
---|
| 598 | need = strlen(s) - free; |
---|
| 599 | if (need > 0) { |
---|
| 600 | size = e->allocated + need + INCR - (need % INCR); |
---|
[b644688] | 601 | e->buff = owl_realloc(e->buff, size); |
---|
[5b5f3e6] | 602 | e->allocated = size; |
---|
[47519e1b] | 603 | } |
---|
[e9bb404] | 604 | |
---|
[5b5f3e6] | 605 | memmove(e->buff + start + strlen(s), e->buff + end, e->bufflen + 1 - end); |
---|
| 606 | memcpy(e->buff + start, s, strlen(s)); |
---|
[ebf0128] | 607 | change = start - end + strlen(s); |
---|
| 608 | e->bufflen += change; |
---|
[5b5f3e6] | 609 | e->index += strlen(s); |
---|
[ebf0128] | 610 | |
---|
[7f0c26f] | 611 | /* fix up the mark */ |
---|
[3e36085] | 612 | oe_fixup(&e->mark, start, end, change); |
---|
| 613 | oe_fixup(&e->topindex, start, end, change); |
---|
[ebf0128] | 614 | /* fix up any saved points after the replaced area */ |
---|
[7f0c26f] | 615 | for (x = e->excursions; x != NULL; x = x->next) { |
---|
| 616 | oe_fixup(&x->index, start, end, change); |
---|
[3e36085] | 617 | oe_fixup(&x->mark, start, end, change); |
---|
[7f0c26f] | 618 | } |
---|
[ebf0128] | 619 | |
---|
[c471e85] | 620 | /* recenter if needed */ |
---|
| 621 | if (start <= e->topindex) |
---|
| 622 | owl_editwin_recenter(e); |
---|
| 623 | |
---|
[ebf0128] | 624 | return change; |
---|
[47519e1b] | 625 | } |
---|
| 626 | |
---|
[c9334b1] | 627 | /* linewrap the word just before the cursor. |
---|
| 628 | * returns 0 on success |
---|
| 629 | * returns -1 if we could not wrap. |
---|
| 630 | */ |
---|
[fc2677b] | 631 | static void _owl_editwin_linewrap_word(owl_editwin *e) |
---|
[c9334b1] | 632 | { |
---|
[fc2677b] | 633 | oe_excursion x; |
---|
[84027015] | 634 | gunichar c; |
---|
[7d4fbcd] | 635 | |
---|
[fc2677b] | 636 | oe_save_excursion(e, &x); |
---|
[84027015] | 637 | |
---|
[fc2677b] | 638 | while (owl_editwin_point_move(e, -1)) { |
---|
| 639 | c = owl_editwin_get_char_at_point(e); |
---|
| 640 | if (owl_util_can_break_after(c) || c == '\n') { |
---|
| 641 | if (c != '\n') |
---|
| 642 | owl_editwin_replace(e, c != ' ' ? 0 : 1, "\n"); |
---|
| 643 | break; |
---|
[2d4ff14] | 644 | } |
---|
[7d4fbcd] | 645 | } |
---|
[fc2677b] | 646 | |
---|
| 647 | oe_restore_excursion(e, &x); |
---|
[7d4fbcd] | 648 | } |
---|
| 649 | |
---|
[c9334b1] | 650 | /* delete the character at the current point, following chars |
---|
| 651 | * shift left. |
---|
[e20d8179] | 652 | */ |
---|
[c9334b1] | 653 | void owl_editwin_delete_char(owl_editwin *e) |
---|
| 654 | { |
---|
[5b5f3e6] | 655 | owl_editwin_replace(e, 1, ""); |
---|
[7d4fbcd] | 656 | } |
---|
| 657 | |
---|
[c9334b1] | 658 | /* Swap the character at point with the character at point-1 and |
---|
| 659 | * advance the pointer. If point is at beginning of buffer do |
---|
| 660 | * nothing. If point is after the last character swap point-1 with |
---|
[e20d8179] | 661 | * point-2. (Behaves as observed in tcsh and emacs). |
---|
[c9334b1] | 662 | */ |
---|
| 663 | void owl_editwin_transpose_chars(owl_editwin *e) |
---|
| 664 | { |
---|
[e19eb97] | 665 | const char *middle, *end, *start; |
---|
[65b2173] | 666 | char *tmp; |
---|
[f2e36b5] | 667 | |
---|
[47519e1b] | 668 | if (e->bufflen == 0) return; |
---|
[e20d8179] | 669 | |
---|
[5b5f3e6] | 670 | if (e->index == e->bufflen) |
---|
| 671 | owl_editwin_point_move(e, -1); /* point is after last character */ |
---|
[f2e36b5] | 672 | |
---|
[5b5f3e6] | 673 | if (owl_editwin_at_beginning_of_buffer(e)) |
---|
| 674 | return; /* point is at beginning of buffer, do nothing */ |
---|
[f2e36b5] | 675 | |
---|
[47519e1b] | 676 | /* Transpose two utf-8 unicode glyphs. */ |
---|
[5b5f3e6] | 677 | middle = e->buff + e->index; |
---|
[47519e1b] | 678 | |
---|
[5b5f3e6] | 679 | end = oe_next_point(e, middle); |
---|
| 680 | if (end == NULL) |
---|
[e20d8179] | 681 | return; |
---|
[47519e1b] | 682 | |
---|
[5b5f3e6] | 683 | start = oe_prev_point(e, middle); |
---|
| 684 | if (start == NULL) |
---|
[e20d8179] | 685 | return; |
---|
[47519e1b] | 686 | |
---|
[5b5f3e6] | 687 | tmp = owl_malloc((end - start) + 1); |
---|
| 688 | tmp[(end - start)] = 0; |
---|
| 689 | memcpy(tmp, middle, end - middle); |
---|
| 690 | memcpy(tmp + (end - middle), start, middle - start); |
---|
| 691 | |
---|
| 692 | owl_editwin_point_move(e, -1); |
---|
| 693 | owl_editwin_replace(e, 2, tmp); |
---|
[f2e36b5] | 694 | } |
---|
| 695 | |
---|
[c9334b1] | 696 | /* insert 'string' at the current point, later text is shifted |
---|
| 697 | * right |
---|
| 698 | */ |
---|
[e19eb97] | 699 | void owl_editwin_insert_string(owl_editwin *e, const char *s) |
---|
[c9334b1] | 700 | { |
---|
[5b5f3e6] | 701 | owl_editwin_replace(e, 0, s); |
---|
[7d4fbcd] | 702 | } |
---|
| 703 | |
---|
[a556caa] | 704 | /* We assume index is not set to point to a mid-char */ |
---|
[bab52da] | 705 | static gunichar owl_editwin_get_char_at_point(owl_editwin *e) |
---|
[c9334b1] | 706 | { |
---|
[a556caa] | 707 | return g_utf8_get_char(e->buff + e->index); |
---|
| 708 | } |
---|
[7d4fbcd] | 709 | |
---|
[7f0c26f] | 710 | void owl_editwin_exchange_point_and_mark(owl_editwin *e) { |
---|
| 711 | int tmp; |
---|
| 712 | |
---|
| 713 | if (e->mark != -1) { |
---|
| 714 | tmp = e->mark; |
---|
| 715 | owl_editwin_set_mark(e); |
---|
| 716 | oe_set_index(e, tmp); |
---|
| 717 | } |
---|
| 718 | } |
---|
| 719 | |
---|
[e20d8179] | 720 | int owl_editwin_point_move(owl_editwin *e, int delta) |
---|
[84027015] | 721 | { |
---|
[e19eb97] | 722 | const char *p; |
---|
[19f765d] | 723 | int change, d = 0; |
---|
[a556caa] | 724 | |
---|
| 725 | change = MAX(delta, - delta); |
---|
| 726 | p = e->buff + e->index; |
---|
| 727 | |
---|
| 728 | while (d < change && p != NULL) { |
---|
[e20d8179] | 729 | if (delta > 0) |
---|
| 730 | p = oe_next_point(e, p); |
---|
| 731 | else |
---|
| 732 | p = oe_prev_point(e, p); |
---|
| 733 | if (p != NULL) { |
---|
[521bc84] | 734 | oe_set_index(e, p - e->buff); |
---|
[e20d8179] | 735 | d++; |
---|
[a556caa] | 736 | } |
---|
| 737 | } |
---|
| 738 | |
---|
| 739 | return delta > 0 ? d : -d; |
---|
[84027015] | 740 | } |
---|
| 741 | |
---|
[a556caa] | 742 | int owl_editwin_at_beginning_of_buffer(owl_editwin *e) { |
---|
| 743 | if (e->index == e->lock) |
---|
| 744 | return 1; |
---|
[84027015] | 745 | |
---|
[a556caa] | 746 | return 0; |
---|
| 747 | } |
---|
| 748 | |
---|
| 749 | int owl_at_end_of_buffer(owl_editwin *e) { |
---|
| 750 | if (e->index == e->bufflen) |
---|
| 751 | return 1; |
---|
| 752 | |
---|
| 753 | return 0; |
---|
| 754 | } |
---|
| 755 | |
---|
[e9c6fc8] | 756 | static int owl_editwin_at_beginning_of_line(owl_editwin *e) |
---|
[c9334b1] | 757 | { |
---|
[a0fbdee] | 758 | oe_excursion x; |
---|
[a556caa] | 759 | int ret; |
---|
[47519e1b] | 760 | |
---|
[a556caa] | 761 | if (owl_editwin_at_beginning_of_buffer(e)) |
---|
| 762 | return 1; |
---|
[47519e1b] | 763 | |
---|
[a0fbdee] | 764 | oe_save_excursion(e, &x); |
---|
[a556caa] | 765 | owl_editwin_point_move(e, -1); |
---|
[bab52da] | 766 | ret = (owl_editwin_get_char_at_point(e) == '\n'); |
---|
[a0fbdee] | 767 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 768 | |
---|
| 769 | return ret; |
---|
| 770 | } |
---|
| 771 | |
---|
[e19eb97] | 772 | static int owl_editwin_is_char_in(owl_editwin *e, const char *set) |
---|
[a556caa] | 773 | { |
---|
[e19eb97] | 774 | const char *p; |
---|
[5b5f3e6] | 775 | |
---|
| 776 | for (p = set; *p != 0; p = g_utf8_find_next_char(p, NULL)) |
---|
| 777 | if (owl_editwin_get_char_at_point(e) == g_utf8_get_char(p)) |
---|
[a556caa] | 778 | return 1; |
---|
| 779 | return 0; |
---|
| 780 | } |
---|
| 781 | |
---|
[e19eb97] | 782 | int owl_editwin_move_if_in(owl_editwin *e, int delta, const char *set) |
---|
[a556caa] | 783 | { |
---|
| 784 | int change, distance = 0; |
---|
[e20d8179] | 785 | while (owl_editwin_is_char_in(e, set)) { |
---|
[a556caa] | 786 | change = owl_editwin_point_move(e, delta); |
---|
| 787 | distance += change; |
---|
| 788 | if (change == 0) |
---|
| 789 | break; |
---|
[47519e1b] | 790 | } |
---|
[a556caa] | 791 | return distance; |
---|
| 792 | } |
---|
| 793 | |
---|
[e19eb97] | 794 | int owl_editwin_move_if_not_in(owl_editwin *e, int delta, const char *set) |
---|
[a556caa] | 795 | { |
---|
| 796 | int change, distance = 0; |
---|
[e20d8179] | 797 | while (!owl_editwin_is_char_in(e, set)) { |
---|
[a556caa] | 798 | change = owl_editwin_point_move(e, delta); |
---|
| 799 | distance += change; |
---|
| 800 | if (change == 0) |
---|
| 801 | break; |
---|
[7d4fbcd] | 802 | } |
---|
[a556caa] | 803 | return distance; |
---|
[7d4fbcd] | 804 | } |
---|
| 805 | |
---|
[e20d8179] | 806 | int owl_editwin_move_to_beginning_of_line(owl_editwin *e) |
---|
[47519e1b] | 807 | { |
---|
[a556caa] | 808 | int distance = 0; |
---|
[47519e1b] | 809 | |
---|
[a556caa] | 810 | if (!owl_editwin_at_beginning_of_line(e)) { |
---|
| 811 | /* move off the \n if were at the end of a line */ |
---|
| 812 | distance += owl_editwin_point_move(e, -1); |
---|
| 813 | distance += owl_editwin_move_if_not_in(e, -1, "\n"); |
---|
| 814 | if (distance && !owl_editwin_at_beginning_of_buffer(e)) |
---|
| 815 | distance += owl_editwin_point_move(e, 1); |
---|
[47519e1b] | 816 | } |
---|
[77d4402] | 817 | e->goal_column = 0; /* subtleties */ |
---|
[84027015] | 818 | |
---|
[a556caa] | 819 | return distance; |
---|
| 820 | } |
---|
[e20d8179] | 821 | |
---|
| 822 | int owl_editwin_move_to_end_of_line(owl_editwin *e) |
---|
[a556caa] | 823 | { |
---|
| 824 | return owl_editwin_move_if_not_in(e, 1, "\n"); |
---|
[47519e1b] | 825 | } |
---|
| 826 | |
---|
[e20d8179] | 827 | int owl_editwin_line_move(owl_editwin *e, int delta) |
---|
[c9334b1] | 828 | { |
---|
[d7043b4] | 829 | int goal_column, change, ll, distance; |
---|
| 830 | int count = 0; |
---|
[a556caa] | 831 | |
---|
| 832 | change = MAX(delta, -delta); |
---|
| 833 | |
---|
[d7043b4] | 834 | goal_column = e->goal_column; |
---|
| 835 | distance = owl_editwin_move_to_beginning_of_line(e); |
---|
| 836 | goal_column = goal_column == -1 ? -distance : goal_column; |
---|
[a556caa] | 837 | |
---|
| 838 | while(count < change) { |
---|
| 839 | if (delta > 0) { |
---|
| 840 | distance += owl_editwin_move_if_not_in(e, 1, "\n"); |
---|
| 841 | distance += owl_editwin_point_move(e, 1); |
---|
| 842 | } else { |
---|
| 843 | /* I really want to assert delta < 0 here */ |
---|
| 844 | distance += owl_editwin_point_move(e, -1); /* to the newline on |
---|
| 845 | the previous line */ |
---|
| 846 | distance += owl_editwin_move_to_beginning_of_line(e); |
---|
| 847 | } |
---|
| 848 | count++; |
---|
[7d4fbcd] | 849 | } |
---|
[a556caa] | 850 | |
---|
| 851 | distance += (ll = owl_editwin_move_to_end_of_line(e)); |
---|
| 852 | if (ll > goal_column) |
---|
| 853 | distance += owl_editwin_point_move(e, goal_column - ll); |
---|
| 854 | |
---|
| 855 | e->goal_column = goal_column; |
---|
| 856 | |
---|
| 857 | return distance; |
---|
[7d4fbcd] | 858 | } |
---|
| 859 | |
---|
[c9334b1] | 860 | void owl_editwin_backspace(owl_editwin *e) |
---|
| 861 | { |
---|
[7d4fbcd] | 862 | /* delete the char before the current one |
---|
| 863 | * and shift later chars left |
---|
| 864 | */ |
---|
[a556caa] | 865 | if(owl_editwin_point_move(e, -1)) |
---|
[7d4fbcd] | 866 | owl_editwin_delete_char(e); |
---|
| 867 | } |
---|
| 868 | |
---|
[c9334b1] | 869 | void owl_editwin_key_up(owl_editwin *e) |
---|
| 870 | { |
---|
[a556caa] | 871 | owl_editwin_line_move(e, -1); |
---|
[7d4fbcd] | 872 | } |
---|
| 873 | |
---|
[c9334b1] | 874 | void owl_editwin_key_down(owl_editwin *e) |
---|
| 875 | { |
---|
[a556caa] | 876 | owl_editwin_line_move(e, 1); |
---|
[7d4fbcd] | 877 | } |
---|
| 878 | |
---|
[c9334b1] | 879 | void owl_editwin_key_left(owl_editwin *e) |
---|
| 880 | { |
---|
[a556caa] | 881 | owl_editwin_point_move(e, -1); |
---|
[7d4fbcd] | 882 | } |
---|
| 883 | |
---|
[c9334b1] | 884 | void owl_editwin_key_right(owl_editwin *e) |
---|
| 885 | { |
---|
[a556caa] | 886 | owl_editwin_point_move(e, 1); |
---|
[7d4fbcd] | 887 | } |
---|
| 888 | |
---|
[5b5f3e6] | 889 | int owl_editwin_forward_word(owl_editwin *e) |
---|
[c9334b1] | 890 | { |
---|
[5b5f3e6] | 891 | int distance; |
---|
[7d4fbcd] | 892 | /* if we're starting on a space, find the first non-space */ |
---|
[5b5f3e6] | 893 | distance = owl_editwin_move_if_in(e, 1, WHITESPACE); |
---|
[7d4fbcd] | 894 | |
---|
[a556caa] | 895 | /* now find the end of this word */ |
---|
[5b5f3e6] | 896 | distance += owl_editwin_move_if_not_in(e, 1, WHITESPACE); |
---|
| 897 | |
---|
| 898 | return distance; |
---|
| 899 | } |
---|
| 900 | |
---|
| 901 | void owl_editwin_move_to_nextword(owl_editwin *e) |
---|
| 902 | { |
---|
| 903 | owl_editwin_forward_word(e); |
---|
[7d4fbcd] | 904 | } |
---|
| 905 | |
---|
[c9334b1] | 906 | /* go backwards to the last non-space character |
---|
| 907 | */ |
---|
[5b5f3e6] | 908 | int owl_editwin_backward_word(owl_editwin *e) |
---|
[c9334b1] | 909 | { |
---|
[a0fbdee] | 910 | oe_excursion x; |
---|
[5b5f3e6] | 911 | int distance = 0; |
---|
| 912 | int further = 0; |
---|
[a556caa] | 913 | int beginning; |
---|
| 914 | /* if in middle of word, beginning of word */ |
---|
| 915 | |
---|
| 916 | /* if at beginning of a word, find beginning of previous word */ |
---|
| 917 | |
---|
[e20d8179] | 918 | if (owl_editwin_is_char_in(e, WHITESPACE)) { |
---|
[a556caa] | 919 | /* if in whitespace past end of word, find a word , the find the beginning*/ |
---|
[5b5f3e6] | 920 | distance += owl_editwin_move_if_in(e, -1, WHITESPACE); /* leaves us on the last |
---|
| 921 | character of the word */ |
---|
[a0fbdee] | 922 | oe_save_excursion(e, &x); |
---|
[a556caa] | 923 | /* are we at the beginning of a word? */ |
---|
| 924 | owl_editwin_point_move(e, -1); |
---|
[e20d8179] | 925 | beginning = owl_editwin_is_char_in(e, WHITESPACE); |
---|
[a0fbdee] | 926 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 927 | if (beginning) |
---|
[5b5f3e6] | 928 | return distance; |
---|
[a556caa] | 929 | } else { |
---|
| 930 | /* in the middle of the word; */ |
---|
[a0fbdee] | 931 | oe_save_excursion(e, &x); |
---|
[5b5f3e6] | 932 | further += owl_editwin_point_move(e, -1); |
---|
[e20d8179] | 933 | if (owl_editwin_is_char_in(e, WHITESPACE)) { /* we were at the beginning */ |
---|
[5b5f3e6] | 934 | distance += owl_editwin_backward_word(e); /* previous case */ |
---|
[8321cb7] | 935 | oe_release_excursion(e, &x); |
---|
[5b5f3e6] | 936 | return distance + further; |
---|
[a556caa] | 937 | } else { |
---|
[a0fbdee] | 938 | oe_restore_excursion(e, &x); |
---|
[7d4fbcd] | 939 | } |
---|
| 940 | } |
---|
[5b5f3e6] | 941 | distance += owl_editwin_move_if_not_in(e, -1, WHITESPACE); |
---|
[a556caa] | 942 | /* will go past */ |
---|
| 943 | if (e->index > e->lock) |
---|
[5b5f3e6] | 944 | distance += owl_editwin_point_move(e, 1); |
---|
| 945 | return distance; |
---|
| 946 | } |
---|
| 947 | |
---|
| 948 | void owl_editwin_move_to_previousword(owl_editwin *e) |
---|
| 949 | { |
---|
| 950 | owl_editwin_backward_word(e); |
---|
[7d4fbcd] | 951 | } |
---|
| 952 | |
---|
[c9334b1] | 953 | void owl_editwin_delete_nextword(owl_editwin *e) |
---|
| 954 | { |
---|
[a0fbdee] | 955 | oe_excursion x; |
---|
[a556caa] | 956 | |
---|
[a0fbdee] | 957 | oe_save_excursion(e, &x); |
---|
[a60edf2] | 958 | oe_set_mark(e, e->index); |
---|
| 959 | owl_editwin_forward_word(e); |
---|
| 960 | owl_editwin_kill_region(e); |
---|
| 961 | oe_restore_mark_only(e, &x); |
---|
[7d4fbcd] | 962 | } |
---|
| 963 | |
---|
[c9334b1] | 964 | void owl_editwin_delete_previousword(owl_editwin *e) |
---|
| 965 | { |
---|
[a60edf2] | 966 | oe_excursion x; |
---|
[b68f9cd] | 967 | |
---|
[a60edf2] | 968 | oe_save_excursion(e, &x); |
---|
| 969 | oe_set_mark(e, e->index); |
---|
| 970 | owl_editwin_backward_word(e); |
---|
| 971 | owl_editwin_kill_region(e); |
---|
| 972 | oe_restore_mark_only(e, &x); |
---|
[b68f9cd] | 973 | } |
---|
| 974 | |
---|
[a556caa] | 975 | void owl_editwin_move_to_line_end(owl_editwin *e) |
---|
[c9334b1] | 976 | { |
---|
[a556caa] | 977 | owl_editwin_move_to_end_of_line(e); |
---|
[7d4fbcd] | 978 | } |
---|
| 979 | |
---|
[a556caa] | 980 | void owl_editwin_delete_to_endofline(owl_editwin *e) |
---|
[c9334b1] | 981 | { |
---|
[a0fbdee] | 982 | oe_excursion x; |
---|
[5b5f3e6] | 983 | int distance; |
---|
[a556caa] | 984 | |
---|
[a0fbdee] | 985 | oe_save_excursion(e, &x); |
---|
[a60edf2] | 986 | owl_editwin_set_mark(e); |
---|
[5b5f3e6] | 987 | distance = owl_editwin_move_to_end_of_line(e); |
---|
[a60edf2] | 988 | if (distance) |
---|
| 989 | owl_editwin_kill_region(e); |
---|
| 990 | else |
---|
| 991 | owl_editwin_replace(e, 1, ""); |
---|
[a0fbdee] | 992 | oe_restore_excursion(e, &x); |
---|
[a60edf2] | 993 | } |
---|
| 994 | |
---|
| 995 | void owl_editwin_yank(owl_editwin *e) |
---|
| 996 | { |
---|
| 997 | if (e->killbuf != NULL) |
---|
| 998 | owl_editwin_replace(e, 0, e->killbuf); |
---|
| 999 | } |
---|
| 1000 | |
---|
[e19eb97] | 1001 | static const char *oe_copy_buf(owl_editwin *e, const char *buf, int len) |
---|
[a60edf2] | 1002 | { |
---|
| 1003 | char *p; |
---|
| 1004 | |
---|
| 1005 | p = owl_malloc(len + 1); |
---|
| 1006 | |
---|
| 1007 | if (p != NULL) { |
---|
| 1008 | owl_free(e->killbuf); |
---|
| 1009 | e->killbuf = p; |
---|
| 1010 | memcpy(e->killbuf, buf, len); |
---|
| 1011 | e->killbuf[len] = 0; |
---|
| 1012 | } |
---|
| 1013 | |
---|
| 1014 | return p; |
---|
| 1015 | } |
---|
| 1016 | |
---|
| 1017 | static int oe_copy_region(owl_editwin *e) |
---|
| 1018 | { |
---|
[e19eb97] | 1019 | const char *p; |
---|
[a60edf2] | 1020 | int start, end; |
---|
| 1021 | |
---|
| 1022 | if (e->mark == -1) |
---|
| 1023 | return 0; |
---|
| 1024 | |
---|
| 1025 | start = MIN(e->index, e->mark); |
---|
| 1026 | end = MAX(e->index, e->mark); |
---|
| 1027 | |
---|
| 1028 | p = oe_copy_buf(e, e->buff + start, end - start); |
---|
| 1029 | if (p != NULL) |
---|
| 1030 | return end - start; |
---|
| 1031 | return 0; |
---|
| 1032 | } |
---|
| 1033 | |
---|
| 1034 | void owl_editwin_copy_region_as_kill(owl_editwin *e) |
---|
| 1035 | { |
---|
| 1036 | oe_copy_region(e); |
---|
| 1037 | } |
---|
| 1038 | |
---|
| 1039 | void owl_editwin_kill_region(owl_editwin *e) |
---|
| 1040 | { |
---|
| 1041 | if (e->index > e->mark) |
---|
| 1042 | owl_editwin_exchange_point_and_mark(e); |
---|
| 1043 | |
---|
[2184001] | 1044 | owl_editwin_replace_internal(e, oe_copy_region(e), ""); |
---|
[7d4fbcd] | 1045 | } |
---|
| 1046 | |
---|
[c9334b1] | 1047 | void owl_editwin_move_to_line_start(owl_editwin *e) |
---|
| 1048 | { |
---|
[a556caa] | 1049 | owl_editwin_move_to_beginning_of_line(e); |
---|
[7d4fbcd] | 1050 | } |
---|
| 1051 | |
---|
[c9334b1] | 1052 | void owl_editwin_move_to_end(owl_editwin *e) |
---|
| 1053 | { |
---|
[521bc84] | 1054 | oe_set_index(e, e->bufflen); |
---|
[7d4fbcd] | 1055 | } |
---|
| 1056 | |
---|
[c9334b1] | 1057 | void owl_editwin_move_to_top(owl_editwin *e) |
---|
| 1058 | { |
---|
[521bc84] | 1059 | oe_set_index(e, e->lock); |
---|
[7d4fbcd] | 1060 | } |
---|
| 1061 | |
---|
[2fc8397] | 1062 | void owl_editwin_backward_paragraph(owl_editwin *e) |
---|
| 1063 | { |
---|
| 1064 | owl_editwin_point_move(e, -1); |
---|
| 1065 | for (; e->index >= e->lock; owl_editwin_point_move(e, -1)) { |
---|
| 1066 | if (e->index <= e->lock || |
---|
| 1067 | ((e->buff[e->index] == '\n') && (e->buff[e->index - 1]=='\n'))) |
---|
| 1068 | break; |
---|
| 1069 | } |
---|
| 1070 | } |
---|
| 1071 | |
---|
| 1072 | void owl_editwin_forward_paragraph(owl_editwin *e) |
---|
| 1073 | { |
---|
| 1074 | owl_editwin_point_move(e, 1); |
---|
| 1075 | /* scan forward to the start of the next paragraph */ |
---|
| 1076 | for(; e->index < e->bufflen; owl_editwin_point_move(e, 1)) { |
---|
| 1077 | if (e->buff[e->index -1] == '\n' && e->buff[e->index] == '\n') |
---|
| 1078 | break; |
---|
| 1079 | } |
---|
| 1080 | } |
---|
| 1081 | |
---|
[d41294a] | 1082 | int owl_editwin_current_column(owl_editwin *e) |
---|
[c9334b1] | 1083 | { |
---|
[a0fbdee] | 1084 | oe_excursion x; |
---|
[fc2677b] | 1085 | int lineindex; |
---|
[7d4fbcd] | 1086 | |
---|
[a0fbdee] | 1087 | oe_save_excursion(e, &x); |
---|
[fc2677b] | 1088 | owl_editwin_move_to_beginning_of_line(e); |
---|
| 1089 | lineindex = e->index; |
---|
| 1090 | oe_restore_excursion(e, &x); |
---|
| 1091 | return oe_region_width(e, lineindex, e->index, 0); |
---|
| 1092 | } |
---|
[a556caa] | 1093 | |
---|
[fc2677b] | 1094 | void owl_editwin_fill_paragraph(owl_editwin *e) |
---|
| 1095 | { |
---|
| 1096 | oe_excursion x; |
---|
| 1097 | gunichar ch; |
---|
| 1098 | int sentence; |
---|
[7d4fbcd] | 1099 | |
---|
[d625cfd] | 1100 | if (e->fillcol < 0) |
---|
| 1101 | /* auto-fill disabled */ |
---|
| 1102 | return; |
---|
| 1103 | |
---|
[fc2677b] | 1104 | oe_save_excursion(e, &x); |
---|
[7d4fbcd] | 1105 | |
---|
[fc2677b] | 1106 | /* Mark the end of the paragraph */ |
---|
| 1107 | owl_editwin_forward_paragraph(e); |
---|
| 1108 | /* Skip the trailing newline */ |
---|
| 1109 | owl_editwin_point_move(e, -1); |
---|
| 1110 | owl_editwin_set_mark(e); |
---|
[7d4fbcd] | 1111 | |
---|
[fc2677b] | 1112 | owl_editwin_backward_paragraph(e); |
---|
[7d4fbcd] | 1113 | |
---|
[fc2677b] | 1114 | /* Don't mess with the leading newline */ |
---|
| 1115 | if (owl_editwin_get_char_at_point(e) == '\n') |
---|
| 1116 | owl_editwin_point_move(e, 1); |
---|
[7d4fbcd] | 1117 | |
---|
[fc2677b] | 1118 | /* |
---|
| 1119 | * First pass: Scan forward replacing all series of spaces with ' ' |
---|
| 1120 | * (or nothing after CJK ideograms) |
---|
| 1121 | */ |
---|
| 1122 | sentence = 0; |
---|
| 1123 | for(;e->index < e->mark; owl_editwin_point_move(e, 1)) { |
---|
[50e671c] | 1124 | /* bail if we hit a trailing dot on the buffer */ |
---|
[fc2677b] | 1125 | if (strcmp(e->buff + e->index, "\n.") == 0) { |
---|
| 1126 | owl_editwin_set_mark(e); |
---|
[50e671c] | 1127 | break; |
---|
[7d4fbcd] | 1128 | } |
---|
| 1129 | |
---|
[fc2677b] | 1130 | ch = owl_editwin_get_char_at_point(e); |
---|
[b2c1bd4] | 1131 | |
---|
[fc2677b] | 1132 | if (owl_util_can_break_after(ch) || ch == '\n') { |
---|
| 1133 | if (g_unichar_isspace(ch)) { |
---|
| 1134 | owl_editwin_replace(e, 1, " "); |
---|
| 1135 | } |
---|
| 1136 | |
---|
[f9d257b] | 1137 | if (sentence && g_unichar_isspace(owl_editwin_get_char_at_point(e)) |
---|
| 1138 | && e->index < e->mark) |
---|
[fc2677b] | 1139 | owl_editwin_point_move(e, 1); |
---|
| 1140 | |
---|
| 1141 | while(g_unichar_isspace(owl_editwin_get_char_at_point(e)) |
---|
| 1142 | && e->index < e->mark) { |
---|
| 1143 | owl_editwin_delete_char(e); |
---|
[7d4fbcd] | 1144 | } |
---|
| 1145 | } |
---|
[fc2677b] | 1146 | |
---|
| 1147 | if(ch == '.' || ch == '!' || ch == '?') |
---|
| 1148 | sentence = 1; |
---|
| 1149 | else |
---|
| 1150 | sentence = 0; |
---|
| 1151 | } |
---|
| 1152 | |
---|
| 1153 | owl_editwin_backward_paragraph(e); |
---|
| 1154 | |
---|
| 1155 | /* Now go through inserting newlines as needed */ |
---|
| 1156 | while(e->index < e->mark) { |
---|
| 1157 | /* if we've travelled too far, linewrap */ |
---|
[d41294a] | 1158 | if (owl_editwin_current_column(e) >= e->fillcol) |
---|
[fc2677b] | 1159 | _owl_editwin_linewrap_word(e); |
---|
| 1160 | owl_editwin_point_move(e, 1); |
---|
[7d4fbcd] | 1161 | } |
---|
| 1162 | |
---|
[a0fbdee] | 1163 | oe_restore_excursion(e, &x); |
---|
[7d4fbcd] | 1164 | } |
---|
| 1165 | |
---|
[cf83b7a] | 1166 | /* returns true if only whitespace remains */ |
---|
[c9334b1] | 1167 | int owl_editwin_is_at_end(owl_editwin *e) |
---|
| 1168 | { |
---|
[a556caa] | 1169 | return (only_whitespace(e->buff + e->index)); |
---|
[217a43e] | 1170 | } |
---|
| 1171 | |
---|
[bab52da] | 1172 | static int owl_editwin_check_dotsend(owl_editwin *e) |
---|
[c9334b1] | 1173 | { |
---|
[dc7884d] | 1174 | int zdot = 0; |
---|
[72ab15f] | 1175 | oe_excursion x; |
---|
[7d4fbcd] | 1176 | |
---|
| 1177 | if (!e->dotsend) return(0); |
---|
[4ccd92c] | 1178 | if (!owl_editwin_is_at_end(e)) return (0); |
---|
[47519e1b] | 1179 | |
---|
[72ab15f] | 1180 | oe_save_excursion(e, &x); |
---|
| 1181 | |
---|
| 1182 | owl_editwin_point_move(e, -3); |
---|
| 1183 | |
---|
[4ccd92c] | 1184 | if(strncmp(e->buff + e->index, "\n.\n", 3) == 0) { |
---|
[dc7884d] | 1185 | owl_editwin_point_move(e, 1); |
---|
| 1186 | zdot = 1; |
---|
[0509efc] | 1187 | } else if(e->index == e->lock && |
---|
[4ccd92c] | 1188 | strncmp(e->buff + e->index, ".\n", 2) == 0) { |
---|
[0509efc] | 1189 | zdot = 1; |
---|
| 1190 | } |
---|
| 1191 | |
---|
| 1192 | if(zdot) { |
---|
[4ccd92c] | 1193 | owl_editwin_set_mark(e); |
---|
| 1194 | owl_editwin_move_to_end(e); |
---|
| 1195 | owl_editwin_replace_region(e, ""); |
---|
[dc7884d] | 1196 | } |
---|
[72ab15f] | 1197 | |
---|
| 1198 | oe_restore_excursion(e, &x); |
---|
| 1199 | |
---|
| 1200 | return zdot; |
---|
[7d4fbcd] | 1201 | } |
---|
| 1202 | |
---|
[fac5463] | 1203 | void owl_editwin_post_process_char(owl_editwin *e, owl_input j) |
---|
[c9334b1] | 1204 | { |
---|
[a556caa] | 1205 | /* XXX force a redisplay? */ |
---|
[fac5463] | 1206 | if ((j.ch==13 || j.ch==10) && owl_editwin_check_dotsend(e)) { |
---|
[435d6b2] | 1207 | owl_command_edit_done(e); |
---|
[7d4fbcd] | 1208 | return; |
---|
| 1209 | } |
---|
[2ee9e8d] | 1210 | owl_editwin_redisplay(e); |
---|
[7d4fbcd] | 1211 | } |
---|
| 1212 | |
---|
[3e36085] | 1213 | static int oe_region_width(owl_editwin *e, int start, int end, int offset) |
---|
[16cfd12a] | 1214 | { |
---|
[e19eb97] | 1215 | const char *p; |
---|
[3e36085] | 1216 | int width = offset; |
---|
| 1217 | |
---|
[16cfd12a] | 1218 | for(p = e->buff + start; |
---|
| 1219 | p < e->buff + end; |
---|
| 1220 | p = g_utf8_find_next_char(p, NULL)) |
---|
| 1221 | width += oe_char_width(g_utf8_get_char(p), width); |
---|
| 1222 | |
---|
[3e36085] | 1223 | return width - offset; |
---|
[16cfd12a] | 1224 | } |
---|
| 1225 | |
---|
[ebf0128] | 1226 | static void oe_insert_char(owl_editwin *e, gunichar c) |
---|
[fac5463] | 1227 | { |
---|
[16cfd12a] | 1228 | oe_excursion x; |
---|
[5b5f3e6] | 1229 | char tmp[7]; |
---|
[16cfd12a] | 1230 | int replaced = -1; |
---|
[5b5f3e6] | 1231 | |
---|
[ebf0128] | 1232 | if (c == '\r') /* translate CRs to NLs */ |
---|
| 1233 | c = '\n'; |
---|
| 1234 | |
---|
[16cfd12a] | 1235 | if (!g_unichar_iscntrl(c) || c == '\n' || c== '\t' ) { |
---|
[ebf0128] | 1236 | if (c == '\n' && e->style == OWL_EDITWIN_STYLE_ONELINE) { |
---|
| 1237 | return; |
---|
| 1238 | } |
---|
| 1239 | |
---|
[d625cfd] | 1240 | if (e->wrapcol > 0 && e->cursorx != -1 && |
---|
| 1241 | e->cursorx + oe_char_width(c, e->cursorx) > e->wrapcol) { |
---|
[16cfd12a] | 1242 | /* XXX this is actually wrong: |
---|
| 1243 | * + If the line has been been wrapped, we can be past the wrap column but |
---|
| 1244 | * e->cursorx be much smaller. |
---|
| 1245 | * + If the user went back and inserted a bunch of stuff in the middle of |
---|
| 1246 | * the line, there may be more than one word past the wrap column. |
---|
| 1247 | */ |
---|
| 1248 | oe_save_excursion(e, &x); |
---|
| 1249 | |
---|
| 1250 | if (c == ' ' || c == '\t') { |
---|
| 1251 | owl_editwin_point_move(e, -1); |
---|
| 1252 | replaced = -owl_editwin_move_if_in(e, -1, " \t"); |
---|
| 1253 | if (!replaced) { |
---|
| 1254 | c = '\n'; |
---|
| 1255 | replaced = -1; |
---|
| 1256 | } |
---|
| 1257 | } else { |
---|
| 1258 | while(!owl_editwin_at_beginning_of_line(e)) { |
---|
| 1259 | owl_editwin_point_move(e, -1); |
---|
| 1260 | if (owl_util_can_break_after(owl_editwin_get_char_at_point(e))) { |
---|
| 1261 | replaced = -owl_editwin_move_if_in(e, -1, " \t"); |
---|
| 1262 | break; |
---|
| 1263 | } |
---|
| 1264 | } |
---|
| 1265 | if (owl_editwin_at_beginning_of_line(e)) |
---|
| 1266 | replaced = -1; |
---|
| 1267 | } |
---|
| 1268 | if (replaced && !owl_editwin_at_beginning_of_line(e)) |
---|
| 1269 | owl_editwin_point_move(e, 1); |
---|
| 1270 | if (replaced >= 0) { |
---|
| 1271 | owl_editwin_replace(e, replaced, "\n"); |
---|
| 1272 | } |
---|
| 1273 | oe_restore_excursion(e, &x); |
---|
| 1274 | } |
---|
| 1275 | |
---|
| 1276 | if (replaced >= 0 && (c == ' ' || c == '\t')) |
---|
| 1277 | return; /* our work here is done */ |
---|
| 1278 | |
---|
[6c171f1] | 1279 | tmp[g_unichar_to_utf8(c, tmp)] = '\0'; |
---|
[ebf0128] | 1280 | owl_editwin_replace(e, 0, tmp); |
---|
| 1281 | } |
---|
| 1282 | } |
---|
| 1283 | |
---|
| 1284 | void owl_editwin_process_char(owl_editwin *e, owl_input j) |
---|
| 1285 | { |
---|
[5b5f3e6] | 1286 | if (j.ch == ERR) |
---|
| 1287 | return; |
---|
[fac5463] | 1288 | /* Ignore ncurses control characters. */ |
---|
[e20d8179] | 1289 | if (j.ch < 0x100) { |
---|
[ebf0128] | 1290 | oe_insert_char(e, j.uch); |
---|
[fac5463] | 1291 | } |
---|
| 1292 | } |
---|
| 1293 | |
---|
[e19eb97] | 1294 | const char *owl_editwin_get_text(owl_editwin *e) |
---|
[c9334b1] | 1295 | { |
---|
[7d4fbcd] | 1296 | return(e->buff+e->lock); |
---|
| 1297 | } |
---|
| 1298 | |
---|
[d41294a] | 1299 | char *owl_editwin_get_region(owl_editwin *e) |
---|
| 1300 | { |
---|
| 1301 | int start, end; |
---|
| 1302 | start = e->index; |
---|
| 1303 | end = e->mark; |
---|
| 1304 | if(start > end) { |
---|
| 1305 | int tmp = end; |
---|
| 1306 | end = start; |
---|
| 1307 | start = tmp; |
---|
| 1308 | } |
---|
| 1309 | |
---|
| 1310 | return oe_chunk(e, start, end); |
---|
| 1311 | } |
---|
| 1312 | |
---|
[77f605d] | 1313 | int owl_editwin_get_echochar(owl_editwin *e) |
---|
| 1314 | { |
---|
[a556caa] | 1315 | return e->echochar; |
---|
| 1316 | } |
---|
[77f605d] | 1317 | |
---|
| 1318 | static char *oe_chunk(owl_editwin *e, int start, int end) |
---|
| 1319 | { |
---|
| 1320 | char *p; |
---|
| 1321 | |
---|
| 1322 | p = owl_malloc(end - start + 1); |
---|
| 1323 | memcpy(p, e->buff + start, end - start); |
---|
| 1324 | p[end - start] = 0; |
---|
| 1325 | |
---|
| 1326 | return p; |
---|
| 1327 | } |
---|
| 1328 | |
---|
[d41294a] | 1329 | /* |
---|
| 1330 | * The only guarantee made about these values is that comparisons |
---|
| 1331 | * between them, as well as comparison between multiple calls to these |
---|
| 1332 | * functions without modifying the editwin in-between, are meaningful. |
---|
| 1333 | */ |
---|
| 1334 | |
---|
| 1335 | int owl_editwin_get_point(owl_editwin *e) |
---|
| 1336 | { |
---|
| 1337 | return e->index; |
---|
| 1338 | } |
---|
| 1339 | |
---|
| 1340 | int owl_editwin_get_mark(owl_editwin *e) |
---|
| 1341 | { |
---|
| 1342 | return e->mark; |
---|
| 1343 | } |
---|
| 1344 | |
---|
[2f21a41] | 1345 | |
---|
| 1346 | /* |
---|
| 1347 | * Local Variables: |
---|
| 1348 | * mode:C |
---|
| 1349 | * c-basic-offset:2 |
---|
| 1350 | * End: |
---|
| 1351 | */ |
---|