[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 | char *command; |
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| 38 | void (*callback)(struct _owl_editwin*); |
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[1b1cd2c] | 39 | void (*destroy_cbdata)(void *); |
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[a556caa] | 40 | void *cbdata; |
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| 41 | }; |
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| 42 | |
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[e20d8179] | 43 | static void oe_reframe(owl_editwin *e); |
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[bab52da] | 44 | static void oe_save_excursion(owl_editwin *e, oe_excursion *x); |
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[ebf0128] | 45 | static void oe_release_excursion(owl_editwin *e, oe_excursion *x); |
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[bab52da] | 46 | static void oe_restore_excursion(owl_editwin *e, oe_excursion *x); |
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[a60edf2] | 47 | static void oe_restore_mark_only(owl_editwin *e, oe_excursion *x); |
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[e19eb97] | 48 | static int oe_count_glyphs(const char *s); |
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[ebf0128] | 49 | static int oe_char_width(gunichar c, int column); |
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[16cfd12a] | 50 | static int oe_region_width(owl_editwin *e, int start, int end, int width); |
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[bab52da] | 51 | static int oe_find_display_line(owl_editwin *e, int *x, int index); |
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[ebf0128] | 52 | static void oe_insert_char(owl_editwin *e, gunichar c); |
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[bab52da] | 53 | static int owl_editwin_limit_maxcols(int v, int maxv); |
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| 54 | static int owl_editwin_check_dotsend(owl_editwin *e); |
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[e19eb97] | 55 | static int owl_editwin_is_char_in(owl_editwin *e, const char *set); |
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[bab52da] | 56 | static gunichar owl_editwin_get_char_at_point(owl_editwin *e); |
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[e19eb97] | 57 | static int owl_editwin_replace_internal(owl_editwin *e, int replace, const char *s); |
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| 58 | static const char *oe_copy_buf(owl_editwin *e, const char *buf, int len); |
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[a60edf2] | 59 | static int oe_copy_region(owl_editwin *e); |
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[77f605d] | 60 | static char *oe_chunk(owl_editwin *e, int start, int end); |
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[1b1cd2c] | 61 | static void oe_destroy_cbdata(owl_editwin *e); |
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[bab52da] | 62 | |
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[5b5f3e6] | 63 | #define INCR 4096 |
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[7d4fbcd] | 64 | |
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[a556caa] | 65 | #define WHITESPACE " \n\t" |
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| 66 | |
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[bab52da] | 67 | owl_editwin *owl_editwin_allocate(void) |
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| 68 | { |
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[8321cb7] | 69 | owl_editwin *e; |
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| 70 | e = owl_malloc(sizeof(owl_editwin)); |
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| 71 | memset(e, 0, sizeof(*e)); |
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| 72 | return e; |
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[a556caa] | 73 | } |
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| 74 | |
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[30bb10a] | 75 | void owl_editwin_delete(owl_editwin *e) |
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[6211c76] | 76 | { |
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| 77 | owl_free(e->buff); |
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| 78 | owl_free(e->killbuf); |
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| 79 | owl_free(e->command); |
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| 80 | /* just in case someone forgot to clean up */ |
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| 81 | while (e->excursions) { |
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| 82 | oe_release_excursion(e, e->excursions); |
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| 83 | } |
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| 84 | |
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| 85 | owl_free(e); |
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| 86 | } |
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| 87 | |
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[e19eb97] | 88 | static int oe_count_glyphs(const char *s) |
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[5b5f3e6] | 89 | { |
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| 90 | int count = 0; |
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[e19eb97] | 91 | const char *p; |
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[5b5f3e6] | 92 | |
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| 93 | for(p = s; *p != 0; p = g_utf8_find_next_char(p, NULL)) |
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| 94 | if (!g_unichar_ismark(g_utf8_get_char(p))) |
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| 95 | count++; |
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| 96 | |
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| 97 | return count; |
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| 98 | } |
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| 99 | |
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[bab52da] | 100 | static inline void oe_set_index(owl_editwin *e, int index) |
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| 101 | { |
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[ebf0128] | 102 | if (index != e->index) { |
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| 103 | e->goal_column = -1; |
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| 104 | e->cursorx = -1; |
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| 105 | } |
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[521bc84] | 106 | e->index = index; |
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| 107 | } |
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| 108 | |
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[7f0c26f] | 109 | static inline void oe_set_mark(owl_editwin *e, int mark) |
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| 110 | { |
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| 111 | e->mark = mark; |
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| 112 | } |
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| 113 | |
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| 114 | void owl_editwin_set_mark(owl_editwin *e) |
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| 115 | { |
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| 116 | oe_set_mark(e, e->index); |
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| 117 | /* owl_function_makemsg("Mark set."); */ |
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| 118 | } |
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| 119 | |
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[cf83b7a] | 120 | /* initialize the editwin e. |
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| 121 | * 'win' is an already initialzed curses window that will be used by editwin |
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| 122 | */ |
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[c9334b1] | 123 | void owl_editwin_init(owl_editwin *e, WINDOW *win, int winlines, int wincols, int style, owl_history *hist) |
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| 124 | { |
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[e20d8179] | 125 | e->buff=owl_malloc(INCR); |
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[7d4fbcd] | 126 | e->buff[0]='\0'; |
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| 127 | e->bufflen=0; |
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[10b866d] | 128 | e->hist=hist; |
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[7d4fbcd] | 129 | e->allocated=INCR; |
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[521bc84] | 130 | oe_set_index(e, 0); |
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[7f0c26f] | 131 | oe_set_mark(e, -1); |
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[a60edf2] | 132 | if (e->killbuf != NULL) |
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[27f6487] | 133 | owl_free(e->killbuf); |
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[a60edf2] | 134 | e->killbuf = NULL; |
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[a556caa] | 135 | e->goal_column = -1; |
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[ebf0128] | 136 | e->cursorx = -1; |
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| 137 | e->topindex = 0; |
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| 138 | e->excursions = NULL; |
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| 139 | owl_editwin_set_curswin(e, win, winlines, wincols); |
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[7d4fbcd] | 140 | e->style=style; |
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| 141 | if ((style!=OWL_EDITWIN_STYLE_MULTILINE) && |
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| 142 | (style!=OWL_EDITWIN_STYLE_ONELINE)) { |
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| 143 | e->style=OWL_EDITWIN_STYLE_MULTILINE; |
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| 144 | } |
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| 145 | e->lock=0; |
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| 146 | e->dotsend=0; |
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[c9334b1] | 147 | e->echochar='\0'; |
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[e74c01c] | 148 | |
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[7d4fbcd] | 149 | if (win) werase(win); |
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| 150 | } |
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| 151 | |
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[c9334b1] | 152 | void owl_editwin_set_curswin(owl_editwin *e, WINDOW *w, int winlines, int wincols) |
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| 153 | { |
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[7d4fbcd] | 154 | e->curswin=w; |
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| 155 | e->winlines=winlines; |
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| 156 | e->wincols=wincols; |
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[9a6cc40] | 157 | e->fillcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxfillcols(&g)); |
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| 158 | e->wrapcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxwrapcols(&g)); |
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[7d4fbcd] | 159 | } |
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| 160 | |
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[c9334b1] | 161 | /* echo the character 'ch' for each normal character keystroke, |
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| 162 | * excepting locktext. This is useful for entering passwords etc. If |
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| 163 | * ch=='\0' characters are echo'd normally |
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| 164 | */ |
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| 165 | void owl_editwin_set_echochar(owl_editwin *e, int ch) |
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| 166 | { |
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| 167 | e->echochar=ch; |
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| 168 | } |
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| 169 | |
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| 170 | WINDOW *owl_editwin_get_curswin(owl_editwin *e) |
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| 171 | { |
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[060b3b4] | 172 | return(e->curswin); |
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[7d4fbcd] | 173 | } |
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| 174 | |
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[c9334b1] | 175 | owl_history *owl_editwin_get_history(owl_editwin *e) |
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| 176 | { |
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[060b3b4] | 177 | return(e->hist); |
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[10b866d] | 178 | } |
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| 179 | |
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[c9334b1] | 180 | void owl_editwin_set_dotsend(owl_editwin *e) |
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| 181 | { |
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[7d4fbcd] | 182 | e->dotsend=1; |
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| 183 | } |
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| 184 | |
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[e19eb97] | 185 | void owl_editwin_set_command(owl_editwin *e, const char *command) |
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[bab52da] | 186 | { |
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[e74c01c] | 187 | if(e->command) owl_free(e->command); |
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| 188 | e->command = owl_strdup(command); |
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| 189 | } |
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| 190 | |
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[e19eb97] | 191 | const char *owl_editwin_get_command(owl_editwin *e) |
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[bab52da] | 192 | { |
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[e74c01c] | 193 | if(e->command) return e->command; |
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| 194 | return ""; |
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| 195 | } |
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| 196 | |
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[bab52da] | 197 | void owl_editwin_set_callback(owl_editwin *e, void (*cb)(owl_editwin*)) |
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| 198 | { |
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[e74c01c] | 199 | e->callback = cb; |
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| 200 | } |
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| 201 | |
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[bab52da] | 202 | void (*owl_editwin_get_callback(owl_editwin *e))(owl_editwin*) |
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| 203 | { |
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[e74c01c] | 204 | return e->callback; |
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| 205 | } |
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| 206 | |
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[1b1cd2c] | 207 | static void oe_destroy_cbdata(owl_editwin *e) { |
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| 208 | if (e->destroy_cbdata) |
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| 209 | e->destroy_cbdata(e->cbdata); |
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| 210 | e->cbdata = NULL; |
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| 211 | e->destroy_cbdata = NULL; |
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| 212 | } |
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| 213 | |
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| 214 | void owl_editwin_set_cbdata(owl_editwin *e, void *data, void (*destroy)(void *)) |
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[bab52da] | 215 | { |
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[1b1cd2c] | 216 | oe_destroy_cbdata(e); |
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[e74c01c] | 217 | e->cbdata = data; |
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[1b1cd2c] | 218 | e->destroy_cbdata = destroy; |
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[e74c01c] | 219 | } |
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| 220 | |
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[a556caa] | 221 | void *owl_editwin_get_cbdata(owl_editwin *e) { |
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[e74c01c] | 222 | return e->cbdata; |
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| 223 | } |
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| 224 | |
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| 225 | void owl_editwin_do_callback(owl_editwin *e) { |
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| 226 | void (*cb)(owl_editwin*); |
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| 227 | cb=owl_editwin_get_callback(e); |
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| 228 | if(!cb) { |
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| 229 | owl_function_error("Internal error: No editwin callback!"); |
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| 230 | } else { |
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[af1920fd] | 231 | /* owl_function_error("text: |%s|", owl_editwin_get_text(e)); */ |
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[e74c01c] | 232 | cb(e); |
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| 233 | } |
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| 234 | } |
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| 235 | |
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[bab52da] | 236 | static int owl_editwin_limit_maxcols(int v, int maxv) |
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[c9334b1] | 237 | { |
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[ebf0128] | 238 | /* maxv > 5 ? MAX(v, vax) : v */ |
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[d36f2cb] | 239 | if (maxv > 5 && v > maxv) { |
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[060b3b4] | 240 | return(maxv); |
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[d36f2cb] | 241 | } else { |
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[060b3b4] | 242 | return(v); |
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[d36f2cb] | 243 | } |
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| 244 | } |
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| 245 | |
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[c9334b1] | 246 | /* set text to be 'locked in' at the beginning of the buffer, any |
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| 247 | * previous text (including locked text) will be overwritten |
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| 248 | */ |
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[e19eb97] | 249 | void owl_editwin_set_locktext(owl_editwin *e, const char *text) |
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[c9334b1] | 250 | { |
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[521bc84] | 251 | oe_set_index(e, 0); |
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[5b5f3e6] | 252 | e->lock = 0; |
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| 253 | owl_editwin_replace(e, e->bufflen, text); |
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| 254 | e->buff[e->bufflen] = 0; |
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| 255 | e->lock=e->bufflen; |
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[521bc84] | 256 | oe_set_index(e, e->lock); |
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[2ee9e8d] | 257 | owl_editwin_redisplay(e); |
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[7d4fbcd] | 258 | } |
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| 259 | |
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[c9334b1] | 260 | int owl_editwin_get_style(owl_editwin *e) |
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| 261 | { |
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[7d4fbcd] | 262 | return(e->style); |
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| 263 | } |
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| 264 | |
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[c9334b1] | 265 | void owl_editwin_new_style(owl_editwin *e, int newstyle, owl_history *h) |
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| 266 | { |
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[98f1e69] | 267 | e->hist = h; |
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| 268 | |
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[7d4fbcd] | 269 | if (e->style==newstyle) return; |
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| 270 | |
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| 271 | if (newstyle==OWL_EDITWIN_STYLE_MULTILINE) { |
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| 272 | e->style=newstyle; |
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| 273 | } else if (newstyle==OWL_EDITWIN_STYLE_ONELINE) { |
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| 274 | e->style=newstyle; |
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| 275 | |
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| 276 | /* nuke everything after the first line */ |
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[5b5f3e6] | 277 | owl_editwin_move_to_top(e); |
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| 278 | owl_editwin_move_to_end_of_line(e); |
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| 279 | owl_editwin_replace(e, oe_count_glyphs(e->buff + e->index), ""); |
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[7d4fbcd] | 280 | } |
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| 281 | } |
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| 282 | |
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[c9334b1] | 283 | /* completly reinitialize the buffer */ |
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| 284 | void owl_editwin_fullclear(owl_editwin *e) |
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| 285 | { |
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[7d4fbcd] | 286 | owl_free(e->buff); |
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[10b866d] | 287 | owl_editwin_init(e, e->curswin, e->winlines, e->wincols, e->style, e->hist); |
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[1b1cd2c] | 288 | e->callback = NULL; |
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| 289 | oe_destroy_cbdata(e); |
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[7d4fbcd] | 290 | } |
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| 291 | |
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[c9334b1] | 292 | /* clear all text except for locktext and put the cursor at the |
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| 293 | * beginning |
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| 294 | */ |
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| 295 | void owl_editwin_clear(owl_editwin *e) |
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| 296 | { |
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| 297 | |
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[6073462] | 298 | int lock = e->lock; |
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[10b866d] | 299 | int dotsend=e->dotsend; |
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[7d4fbcd] | 300 | char *locktext=NULL; |
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[cc6f009] | 301 | char echochar=e->echochar; |
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[10b866d] | 302 | |
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[6073462] | 303 | if (lock > 0) { |
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[5b5f3e6] | 304 | locktext = owl_malloc(lock+1); |
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| 305 | strncpy(locktext, e->buff, lock); |
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| 306 | locktext[lock] = 0; |
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[7d4fbcd] | 307 | } |
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| 308 | |
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| 309 | owl_free(e->buff); |
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[10b866d] | 310 | owl_editwin_init(e, e->curswin, e->winlines, e->wincols, e->style, e->hist); |
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[7d4fbcd] | 311 | |
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| 312 | if (lock > 0) { |
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| 313 | owl_editwin_set_locktext(e, locktext); |
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| 314 | } |
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[10b866d] | 315 | if (dotsend) { |
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| 316 | owl_editwin_set_dotsend(e); |
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| 317 | } |
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[cc6f009] | 318 | if (echochar) { |
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| 319 | owl_editwin_set_echochar(e, echochar); |
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| 320 | } |
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[7d4fbcd] | 321 | |
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[5b5f3e6] | 322 | if (locktext) |
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| 323 | owl_free(locktext); |
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[6073462] | 324 | |
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[521bc84] | 325 | oe_set_index(e, lock); |
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[7d4fbcd] | 326 | } |
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| 327 | |
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[c9334b1] | 328 | void owl_editwin_recenter(owl_editwin *e) |
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| 329 | { |
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[a556caa] | 330 | e->topindex = -1; |
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| 331 | } |
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[e20d8179] | 332 | |
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[a0fbdee] | 333 | static void oe_save_excursion(owl_editwin *e, oe_excursion *x) |
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| 334 | { |
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| 335 | x->index = e->index; |
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[7f0c26f] | 336 | x->mark = e->mark; |
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[a0fbdee] | 337 | x->goal_column = e->goal_column; |
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| 338 | x->lock = e->lock; |
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[ebf0128] | 339 | |
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| 340 | x->valid = VALID_EXCURSION; |
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| 341 | x->next = e->excursions; |
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| 342 | e->excursions = x; |
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| 343 | } |
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| 344 | |
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| 345 | static void oe_release_excursion(owl_editwin *e, oe_excursion *x) |
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| 346 | { |
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[a85d225] | 347 | oe_excursion **px; |
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[ebf0128] | 348 | |
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| 349 | x->valid = 0; |
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[a85d225] | 350 | for (px = &e->excursions; *px != NULL; px = &(*px)->next) |
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| 351 | if (*px == x) { |
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| 352 | *px = x->next; |
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| 353 | return; |
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| 354 | } |
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| 355 | abort(); |
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[a0fbdee] | 356 | } |
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| 357 | |
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| 358 | static void oe_restore_excursion(owl_editwin *e, oe_excursion *x) |
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| 359 | { |
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[ebf0128] | 360 | if (x->valid == VALID_EXCURSION) { |
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| 361 | oe_set_index(e, x->index); |
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| 362 | e->goal_column = x->goal_column; |
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[7f0c26f] | 363 | e->mark = x->mark; |
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[ebf0128] | 364 | e->lock = x->lock; |
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| 365 | |
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| 366 | oe_release_excursion(e, x); |
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| 367 | } |
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[a0fbdee] | 368 | } |
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| 369 | |
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[a60edf2] | 370 | static void oe_restore_mark_only(owl_editwin *e, oe_excursion *x) |
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| 371 | { |
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| 372 | if (x->valid == VALID_EXCURSION) { |
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| 373 | e->mark = x->mark; |
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| 374 | |
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| 375 | oe_release_excursion(e, x); |
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| 376 | } |
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| 377 | } |
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| 378 | |
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[a88f35a] | 379 | /* External interface to oe_save_excursion */ |
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| 380 | owl_editwin_excursion *owl_editwin_begin_excursion(owl_editwin *e) |
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| 381 | { |
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| 382 | owl_editwin_excursion *x = owl_malloc(sizeof *x); |
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| 383 | oe_save_excursion(e, x); |
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| 384 | return x; |
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| 385 | } |
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| 386 | |
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| 387 | void owl_editwin_end_excursion(owl_editwin *e, owl_editwin_excursion *x) |
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| 388 | { |
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| 389 | oe_restore_excursion(e, x); |
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| 390 | owl_free(x); |
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| 391 | } |
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| 392 | |
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[e19eb97] | 393 | static inline const char *oe_next_point(owl_editwin *e, const char *p) |
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[e20d8179] | 394 | { |
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[e19eb97] | 395 | const char *boundary = e->buff + e->bufflen + 1; |
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| 396 | const char *q; |
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[e20d8179] | 397 | |
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| 398 | q = g_utf8_find_next_char(p, boundary); |
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| 399 | while (q && g_unichar_ismark(g_utf8_get_char(q))) |
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| 400 | q = g_utf8_find_next_char(q, boundary); |
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| 401 | |
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| 402 | if (q == p) |
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| 403 | return NULL; |
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| 404 | return q; |
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| 405 | } |
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| 406 | |
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[e19eb97] | 407 | static inline const char *oe_prev_point(owl_editwin *e, const char *p) |
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[e20d8179] | 408 | { |
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[e19eb97] | 409 | const char *boundary = e->buff + e->lock; |
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[e20d8179] | 410 | |
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| 411 | p = g_utf8_find_prev_char(boundary, p); |
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| 412 | while (p && g_unichar_ismark(g_utf8_get_char(p))) |
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| 413 | p = g_utf8_find_prev_char(boundary, p); |
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| 414 | |
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| 415 | return p; |
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| 416 | } |
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| 417 | |
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[ebf0128] | 418 | static int oe_char_width(gunichar c, int column) |
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| 419 | { |
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| 420 | int cw; |
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| 421 | |
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| 422 | if (c == 9) /* TAB */ |
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| 423 | return TABSIZE - column % TABSIZE; |
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| 424 | |
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| 425 | cw = mk_wcwidth(c); |
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| 426 | |
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| 427 | if (cw < 0) /* control characters */ |
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| 428 | cw = 0; |
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| 429 | |
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| 430 | return cw; |
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| 431 | } |
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| 432 | |
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[19f765d] | 433 | static int oe_find_display_line(owl_editwin *e, int *x, int index) |
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| 434 | { |
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| 435 | int width = 0, cw; |
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[ebf0128] | 436 | gunichar c; |
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[e19eb97] | 437 | const char *p; |
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[19f765d] | 438 | |
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[77d4402] | 439 | while(1) { |
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| 440 | /* note the position of the dot */ |
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[2021bea] | 441 | if (x != NULL && index == e->index && width < e->wincols) |
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[19f765d] | 442 | *x = width; |
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[77d4402] | 443 | |
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[19f765d] | 444 | /* get the current character */ |
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| 445 | c = g_utf8_get_char(e->buff + index); |
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| 446 | |
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| 447 | /* figure out how wide it is */ |
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[ebf0128] | 448 | cw = oe_char_width(c, width); |
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[19f765d] | 449 | |
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[77d4402] | 450 | if (width + cw > e->wincols) { |
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| 451 | if (x != NULL && *x == width) |
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| 452 | *x = -1; |
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[19f765d] | 453 | break; |
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[77d4402] | 454 | } |
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[19f765d] | 455 | width += cw; |
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| 456 | |
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| 457 | if (c == '\n') { |
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[77d4402] | 458 | if (width < e->wincols) |
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| 459 | ++index; /* skip the newline */ |
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[19f765d] | 460 | break; |
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| 461 | } |
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| 462 | |
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| 463 | /* find the next character */ |
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| 464 | p = oe_next_point(e, e->buff + index); |
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| 465 | if (p == NULL) { /* we ran off the end */ |
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| 466 | if (x != NULL && e->index > index) |
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| 467 | *x = width + 1; |
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| 468 | break; |
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| 469 | } |
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| 470 | index = p - e->buff; |
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[cedc95c] | 471 | |
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[19f765d] | 472 | } |
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| 473 | return index; |
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| 474 | } |
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| 475 | |
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[e20d8179] | 476 | static void oe_reframe(owl_editwin *e) { |
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[cedc95c] | 477 | oe_excursion x; |
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[460fbe8] | 478 | int goal = 1 + e->winlines / 2; |
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[cedc95c] | 479 | int index; |
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| 480 | int count = 0; |
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| 481 | int n, i; |
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| 482 | int last; |
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| 483 | |
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| 484 | oe_save_excursion(e, &x); |
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| 485 | /* step back line-by-line through the buffer until we have >= goal lines of |
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| 486 | display text */ |
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| 487 | e->lock = 0; /* we can (must) tread on the locktext */ |
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| 488 | |
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| 489 | last = -1; |
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| 490 | while (count < goal) { |
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| 491 | index = e->index; |
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| 492 | owl_editwin_move_to_beginning_of_line(e); |
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| 493 | if (last == e->index) |
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| 494 | break; |
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| 495 | last = e->index; |
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| 496 | for (n = 0, i = e->index; i < index; n++) |
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| 497 | i = oe_find_display_line(e, NULL, i); |
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| 498 | count += n == 0 ? 1 : n; |
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| 499 | if (count < goal) |
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| 500 | owl_editwin_point_move(e, -1); |
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| 501 | } |
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| 502 | |
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| 503 | e->topindex = e->index; |
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[521bc84] | 504 | /* if we overshot, backtrack */ |
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| 505 | for (n = 0; n < (count - goal); n++) |
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| 506 | e->topindex = oe_find_display_line(e, NULL, e->topindex); |
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[cedc95c] | 507 | |
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| 508 | oe_restore_excursion(e, &x); |
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[7d4fbcd] | 509 | } |
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| 510 | |
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[3e36085] | 511 | static void oe_addnec(owl_editwin *e, int count) |
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| 512 | { |
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| 513 | int i; |
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| 514 | |
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| 515 | for (i = 0; i < count; i++) |
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| 516 | waddch(e->curswin, e->echochar); |
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| 517 | } |
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| 518 | |
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| 519 | static void oe_mvaddnec(owl_editwin *e, int y, int x, int count) |
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| 520 | { |
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| 521 | wmove(e->curswin, y, x); |
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| 522 | oe_addnec(e, count); |
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| 523 | } |
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| 524 | |
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[c9334b1] | 525 | /* regenerate the text on the curses window */ |
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[2ee9e8d] | 526 | void owl_editwin_redisplay(owl_editwin *e) |
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[c9334b1] | 527 | { |
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[19f765d] | 528 | int x = -1, y = -1, t; |
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[77d4402] | 529 | int line, index, lineindex, times = 0; |
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[7d4fbcd] | 530 | |
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[bd1a1ae] | 531 | do { |
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[cedc95c] | 532 | werase(e->curswin); |
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[36a16fc] | 533 | |
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| 534 | if (e->topindex == -1 || e->index < e->topindex) |
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[e20d8179] | 535 | oe_reframe(e); |
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| 536 | |
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[bd1a1ae] | 537 | line = 0; |
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| 538 | index = e->topindex; |
---|
| 539 | while(line < e->winlines) { |
---|
| 540 | lineindex = index; |
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[19f765d] | 541 | t = -1; |
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| 542 | index = oe_find_display_line(e, &t, lineindex); |
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| 543 | if (x == -1 && t != -1) |
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| 544 | x = t, y = line; |
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[3e36085] | 545 | if (index - lineindex) { |
---|
| 546 | if (!e->echochar) |
---|
| 547 | mvwaddnstr(e->curswin, line, 0, |
---|
| 548 | e->buff + lineindex, |
---|
| 549 | index - lineindex); |
---|
| 550 | else { |
---|
| 551 | if(lineindex < e->lock) { |
---|
| 552 | mvwaddnstr(e->curswin, line, 0, |
---|
| 553 | e->buff + lineindex, |
---|
| 554 | MIN(index - lineindex, |
---|
| 555 | e->lock - lineindex)); |
---|
| 556 | if (e->lock < index) |
---|
| 557 | oe_addnec(e, |
---|
| 558 | oe_region_width(e, e->lock, index, |
---|
| 559 | oe_region_width(e, lineindex, e->lock, 0))); |
---|
| 560 | } else |
---|
| 561 | oe_mvaddnec(e, line, 0, oe_region_width(e, line, index, 0)); |
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| 562 | } |
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| 563 | } |
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[bd1a1ae] | 564 | line++; |
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[a556caa] | 565 | } |
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[19f765d] | 566 | if (x == -1) |
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[bd1a1ae] | 567 | e->topindex = -1; /* force a reframe */ |
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[77d4402] | 568 | times++; |
---|
| 569 | } while(x == -1 && times < 3); |
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[e20d8179] | 570 | |
---|
[19f765d] | 571 | wmove(e->curswin, y, x); |
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[ebf0128] | 572 | e->cursorx = x; |
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[7d4fbcd] | 573 | } |
---|
| 574 | |
---|
[7f0c26f] | 575 | static inline void oe_fixup(int *target, int start, int end, int change) { |
---|
| 576 | if (*target > start) { |
---|
[0d9c90c] | 577 | if (*target <= end) |
---|
[8459609] | 578 | *target = end + change; |
---|
[7f0c26f] | 579 | else |
---|
| 580 | *target += change; |
---|
| 581 | } |
---|
| 582 | } |
---|
| 583 | |
---|
[e19eb97] | 584 | int owl_editwin_replace_region(owl_editwin *e, const char *s) |
---|
[a88f35a] | 585 | { |
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| 586 | oe_excursion x; |
---|
| 587 | int ret; |
---|
[5ebc202] | 588 | oe_save_excursion(e, &x); |
---|
[a88f35a] | 589 | |
---|
| 590 | if(e->index > e->mark) { |
---|
| 591 | owl_editwin_exchange_point_and_mark(e); |
---|
| 592 | } |
---|
| 593 | |
---|
| 594 | ret = owl_editwin_replace_internal(e, e->mark - e->index, s); |
---|
| 595 | |
---|
| 596 | oe_restore_excursion(e, &x); |
---|
| 597 | |
---|
| 598 | return ret; |
---|
| 599 | } |
---|
| 600 | |
---|
[19a023f] | 601 | /* replace 'replace' characters at the point with s, returning the change in size */ |
---|
[e19eb97] | 602 | int owl_editwin_replace(owl_editwin *e, int replace, const char *s) |
---|
[ebf0128] | 603 | { |
---|
[19a023f] | 604 | int start, end, i; |
---|
[e19eb97] | 605 | const char *p; |
---|
[e9bb404] | 606 | |
---|
[5b5f3e6] | 607 | if (!g_utf8_validate(s, -1, NULL)) { |
---|
| 608 | owl_function_debugmsg("owl_editwin_insert_string: received non-utf-8 string."); |
---|
[ebf0128] | 609 | return 0; |
---|
[47519e1b] | 610 | } |
---|
| 611 | |
---|
[5b5f3e6] | 612 | start = e->index; |
---|
| 613 | for (i = 0, p = e->buff + start; i < replace && p != NULL; i++) |
---|
| 614 | p = oe_next_point(e, p); |
---|
| 615 | if (p != NULL) |
---|
| 616 | end = p - e->buff; |
---|
| 617 | else |
---|
| 618 | end = e->bufflen; |
---|
| 619 | |
---|
[19a023f] | 620 | return owl_editwin_replace_internal(e, end - start, s); |
---|
| 621 | } |
---|
| 622 | |
---|
[e19eb97] | 623 | static int owl_editwin_replace_internal(owl_editwin *e, int replace, const char *s) |
---|
[19a023f] | 624 | { |
---|
| 625 | int start, end, free, need, size, change; |
---|
| 626 | oe_excursion *x; |
---|
| 627 | |
---|
| 628 | start = e->index; |
---|
| 629 | end = start + replace; |
---|
| 630 | |
---|
[5b5f3e6] | 631 | free = e->allocated - e->bufflen + end - start; |
---|
| 632 | |
---|
| 633 | need = strlen(s) - free; |
---|
| 634 | if (need > 0) { |
---|
| 635 | size = e->allocated + need + INCR - (need % INCR); |
---|
[b644688] | 636 | e->buff = owl_realloc(e->buff, size); |
---|
[5b5f3e6] | 637 | e->allocated = size; |
---|
[47519e1b] | 638 | } |
---|
[e9bb404] | 639 | |
---|
[5b5f3e6] | 640 | memmove(e->buff + start + strlen(s), e->buff + end, e->bufflen + 1 - end); |
---|
| 641 | memcpy(e->buff + start, s, strlen(s)); |
---|
[ebf0128] | 642 | change = start - end + strlen(s); |
---|
| 643 | e->bufflen += change; |
---|
[5b5f3e6] | 644 | e->index += strlen(s); |
---|
[ebf0128] | 645 | |
---|
[7f0c26f] | 646 | /* fix up the mark */ |
---|
[3e36085] | 647 | oe_fixup(&e->mark, start, end, change); |
---|
| 648 | oe_fixup(&e->topindex, start, end, change); |
---|
[ebf0128] | 649 | /* fix up any saved points after the replaced area */ |
---|
[7f0c26f] | 650 | for (x = e->excursions; x != NULL; x = x->next) { |
---|
| 651 | oe_fixup(&x->index, start, end, change); |
---|
[3e36085] | 652 | oe_fixup(&x->mark, start, end, change); |
---|
[7f0c26f] | 653 | } |
---|
[ebf0128] | 654 | |
---|
[c471e85] | 655 | /* recenter if needed */ |
---|
| 656 | if (start <= e->topindex) |
---|
| 657 | owl_editwin_recenter(e); |
---|
| 658 | |
---|
[ebf0128] | 659 | return change; |
---|
[47519e1b] | 660 | } |
---|
| 661 | |
---|
[c9334b1] | 662 | /* linewrap the word just before the cursor. |
---|
| 663 | * returns 0 on success |
---|
| 664 | * returns -1 if we could not wrap. |
---|
| 665 | */ |
---|
[fc2677b] | 666 | static void _owl_editwin_linewrap_word(owl_editwin *e) |
---|
[c9334b1] | 667 | { |
---|
[fc2677b] | 668 | oe_excursion x; |
---|
[84027015] | 669 | gunichar c; |
---|
[7d4fbcd] | 670 | |
---|
[fc2677b] | 671 | oe_save_excursion(e, &x); |
---|
[84027015] | 672 | |
---|
[fc2677b] | 673 | while (owl_editwin_point_move(e, -1)) { |
---|
| 674 | c = owl_editwin_get_char_at_point(e); |
---|
| 675 | if (owl_util_can_break_after(c) || c == '\n') { |
---|
| 676 | if (c != '\n') |
---|
| 677 | owl_editwin_replace(e, c != ' ' ? 0 : 1, "\n"); |
---|
| 678 | break; |
---|
[2d4ff14] | 679 | } |
---|
[7d4fbcd] | 680 | } |
---|
[fc2677b] | 681 | |
---|
| 682 | oe_restore_excursion(e, &x); |
---|
[7d4fbcd] | 683 | } |
---|
| 684 | |
---|
[c9334b1] | 685 | /* delete the character at the current point, following chars |
---|
| 686 | * shift left. |
---|
[e20d8179] | 687 | */ |
---|
[c9334b1] | 688 | void owl_editwin_delete_char(owl_editwin *e) |
---|
| 689 | { |
---|
[5b5f3e6] | 690 | owl_editwin_replace(e, 1, ""); |
---|
[7d4fbcd] | 691 | } |
---|
| 692 | |
---|
[c9334b1] | 693 | /* Swap the character at point with the character at point-1 and |
---|
| 694 | * advance the pointer. If point is at beginning of buffer do |
---|
| 695 | * nothing. If point is after the last character swap point-1 with |
---|
[e20d8179] | 696 | * point-2. (Behaves as observed in tcsh and emacs). |
---|
[c9334b1] | 697 | */ |
---|
| 698 | void owl_editwin_transpose_chars(owl_editwin *e) |
---|
| 699 | { |
---|
[e19eb97] | 700 | const char *middle, *end, *start; |
---|
[65b2173] | 701 | char *tmp; |
---|
[f2e36b5] | 702 | |
---|
[47519e1b] | 703 | if (e->bufflen == 0) return; |
---|
[e20d8179] | 704 | |
---|
[5b5f3e6] | 705 | if (e->index == e->bufflen) |
---|
| 706 | owl_editwin_point_move(e, -1); /* point is after last character */ |
---|
[f2e36b5] | 707 | |
---|
[5b5f3e6] | 708 | if (owl_editwin_at_beginning_of_buffer(e)) |
---|
| 709 | return; /* point is at beginning of buffer, do nothing */ |
---|
[f2e36b5] | 710 | |
---|
[47519e1b] | 711 | /* Transpose two utf-8 unicode glyphs. */ |
---|
[5b5f3e6] | 712 | middle = e->buff + e->index; |
---|
[47519e1b] | 713 | |
---|
[5b5f3e6] | 714 | end = oe_next_point(e, middle); |
---|
| 715 | if (end == NULL) |
---|
[e20d8179] | 716 | return; |
---|
[47519e1b] | 717 | |
---|
[5b5f3e6] | 718 | start = oe_prev_point(e, middle); |
---|
| 719 | if (start == NULL) |
---|
[e20d8179] | 720 | return; |
---|
[47519e1b] | 721 | |
---|
[5b5f3e6] | 722 | tmp = owl_malloc((end - start) + 1); |
---|
| 723 | tmp[(end - start)] = 0; |
---|
| 724 | memcpy(tmp, middle, end - middle); |
---|
| 725 | memcpy(tmp + (end - middle), start, middle - start); |
---|
| 726 | |
---|
| 727 | owl_editwin_point_move(e, -1); |
---|
| 728 | owl_editwin_replace(e, 2, tmp); |
---|
[f2e36b5] | 729 | } |
---|
| 730 | |
---|
[c9334b1] | 731 | /* insert 'string' at the current point, later text is shifted |
---|
| 732 | * right |
---|
| 733 | */ |
---|
[e19eb97] | 734 | void owl_editwin_insert_string(owl_editwin *e, const char *s) |
---|
[c9334b1] | 735 | { |
---|
[5b5f3e6] | 736 | owl_editwin_replace(e, 0, s); |
---|
[7d4fbcd] | 737 | } |
---|
| 738 | |
---|
[a556caa] | 739 | /* We assume index is not set to point to a mid-char */ |
---|
[bab52da] | 740 | static gunichar owl_editwin_get_char_at_point(owl_editwin *e) |
---|
[c9334b1] | 741 | { |
---|
[a556caa] | 742 | return g_utf8_get_char(e->buff + e->index); |
---|
| 743 | } |
---|
[7d4fbcd] | 744 | |
---|
[7f0c26f] | 745 | void owl_editwin_exchange_point_and_mark(owl_editwin *e) { |
---|
| 746 | int tmp; |
---|
| 747 | |
---|
| 748 | if (e->mark != -1) { |
---|
| 749 | tmp = e->mark; |
---|
| 750 | owl_editwin_set_mark(e); |
---|
| 751 | oe_set_index(e, tmp); |
---|
| 752 | } |
---|
| 753 | } |
---|
| 754 | |
---|
[e20d8179] | 755 | int owl_editwin_point_move(owl_editwin *e, int delta) |
---|
[84027015] | 756 | { |
---|
[e19eb97] | 757 | const char *p; |
---|
[19f765d] | 758 | int change, d = 0; |
---|
[a556caa] | 759 | |
---|
| 760 | change = MAX(delta, - delta); |
---|
| 761 | p = e->buff + e->index; |
---|
| 762 | |
---|
| 763 | while (d < change && p != NULL) { |
---|
[e20d8179] | 764 | if (delta > 0) |
---|
| 765 | p = oe_next_point(e, p); |
---|
| 766 | else |
---|
| 767 | p = oe_prev_point(e, p); |
---|
| 768 | if (p != NULL) { |
---|
[521bc84] | 769 | oe_set_index(e, p - e->buff); |
---|
[e20d8179] | 770 | d++; |
---|
[a556caa] | 771 | } |
---|
| 772 | } |
---|
| 773 | |
---|
| 774 | return delta > 0 ? d : -d; |
---|
[84027015] | 775 | } |
---|
| 776 | |
---|
[a556caa] | 777 | int owl_editwin_at_beginning_of_buffer(owl_editwin *e) { |
---|
| 778 | if (e->index == e->lock) |
---|
| 779 | return 1; |
---|
[84027015] | 780 | |
---|
[a556caa] | 781 | return 0; |
---|
| 782 | } |
---|
| 783 | |
---|
| 784 | int owl_at_end_of_buffer(owl_editwin *e) { |
---|
| 785 | if (e->index == e->bufflen) |
---|
| 786 | return 1; |
---|
| 787 | |
---|
| 788 | return 0; |
---|
| 789 | } |
---|
| 790 | |
---|
[e9c6fc8] | 791 | static int owl_editwin_at_beginning_of_line(owl_editwin *e) |
---|
[c9334b1] | 792 | { |
---|
[a0fbdee] | 793 | oe_excursion x; |
---|
[a556caa] | 794 | int ret; |
---|
[47519e1b] | 795 | |
---|
[a556caa] | 796 | if (owl_editwin_at_beginning_of_buffer(e)) |
---|
| 797 | return 1; |
---|
[47519e1b] | 798 | |
---|
[a0fbdee] | 799 | oe_save_excursion(e, &x); |
---|
[a556caa] | 800 | owl_editwin_point_move(e, -1); |
---|
[bab52da] | 801 | ret = (owl_editwin_get_char_at_point(e) == '\n'); |
---|
[a0fbdee] | 802 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 803 | |
---|
| 804 | return ret; |
---|
| 805 | } |
---|
| 806 | |
---|
[e19eb97] | 807 | static int owl_editwin_is_char_in(owl_editwin *e, const char *set) |
---|
[a556caa] | 808 | { |
---|
[e19eb97] | 809 | const char *p; |
---|
[5b5f3e6] | 810 | |
---|
| 811 | for (p = set; *p != 0; p = g_utf8_find_next_char(p, NULL)) |
---|
| 812 | if (owl_editwin_get_char_at_point(e) == g_utf8_get_char(p)) |
---|
[a556caa] | 813 | return 1; |
---|
| 814 | return 0; |
---|
| 815 | } |
---|
| 816 | |
---|
[e19eb97] | 817 | int owl_editwin_move_if_in(owl_editwin *e, int delta, const char *set) |
---|
[a556caa] | 818 | { |
---|
| 819 | int change, distance = 0; |
---|
[e20d8179] | 820 | while (owl_editwin_is_char_in(e, set)) { |
---|
[a556caa] | 821 | change = owl_editwin_point_move(e, delta); |
---|
| 822 | distance += change; |
---|
| 823 | if (change == 0) |
---|
| 824 | break; |
---|
[47519e1b] | 825 | } |
---|
[a556caa] | 826 | return distance; |
---|
| 827 | } |
---|
| 828 | |
---|
[e19eb97] | 829 | int owl_editwin_move_if_not_in(owl_editwin *e, int delta, const char *set) |
---|
[a556caa] | 830 | { |
---|
| 831 | int change, distance = 0; |
---|
[e20d8179] | 832 | while (!owl_editwin_is_char_in(e, set)) { |
---|
[a556caa] | 833 | change = owl_editwin_point_move(e, delta); |
---|
| 834 | distance += change; |
---|
| 835 | if (change == 0) |
---|
| 836 | break; |
---|
[7d4fbcd] | 837 | } |
---|
[a556caa] | 838 | return distance; |
---|
[7d4fbcd] | 839 | } |
---|
| 840 | |
---|
[e20d8179] | 841 | int owl_editwin_move_to_beginning_of_line(owl_editwin *e) |
---|
[47519e1b] | 842 | { |
---|
[a556caa] | 843 | int distance = 0; |
---|
[47519e1b] | 844 | |
---|
[a556caa] | 845 | if (!owl_editwin_at_beginning_of_line(e)) { |
---|
| 846 | /* move off the \n if were at the end of a line */ |
---|
| 847 | distance += owl_editwin_point_move(e, -1); |
---|
| 848 | distance += owl_editwin_move_if_not_in(e, -1, "\n"); |
---|
| 849 | if (distance && !owl_editwin_at_beginning_of_buffer(e)) |
---|
| 850 | distance += owl_editwin_point_move(e, 1); |
---|
[47519e1b] | 851 | } |
---|
[77d4402] | 852 | e->goal_column = 0; /* subtleties */ |
---|
[84027015] | 853 | |
---|
[a556caa] | 854 | return distance; |
---|
| 855 | } |
---|
[e20d8179] | 856 | |
---|
| 857 | int owl_editwin_move_to_end_of_line(owl_editwin *e) |
---|
[a556caa] | 858 | { |
---|
| 859 | return owl_editwin_move_if_not_in(e, 1, "\n"); |
---|
[47519e1b] | 860 | } |
---|
| 861 | |
---|
[e20d8179] | 862 | int owl_editwin_line_move(owl_editwin *e, int delta) |
---|
[c9334b1] | 863 | { |
---|
[d7043b4] | 864 | int goal_column, change, ll, distance; |
---|
| 865 | int count = 0; |
---|
[a556caa] | 866 | |
---|
| 867 | change = MAX(delta, -delta); |
---|
| 868 | |
---|
[d7043b4] | 869 | goal_column = e->goal_column; |
---|
| 870 | distance = owl_editwin_move_to_beginning_of_line(e); |
---|
| 871 | goal_column = goal_column == -1 ? -distance : goal_column; |
---|
[a556caa] | 872 | |
---|
| 873 | while(count < change) { |
---|
| 874 | if (delta > 0) { |
---|
| 875 | distance += owl_editwin_move_if_not_in(e, 1, "\n"); |
---|
| 876 | distance += owl_editwin_point_move(e, 1); |
---|
| 877 | } else { |
---|
| 878 | /* I really want to assert delta < 0 here */ |
---|
| 879 | distance += owl_editwin_point_move(e, -1); /* to the newline on |
---|
| 880 | the previous line */ |
---|
| 881 | distance += owl_editwin_move_to_beginning_of_line(e); |
---|
| 882 | } |
---|
| 883 | count++; |
---|
[7d4fbcd] | 884 | } |
---|
[a556caa] | 885 | |
---|
| 886 | distance += (ll = owl_editwin_move_to_end_of_line(e)); |
---|
| 887 | if (ll > goal_column) |
---|
| 888 | distance += owl_editwin_point_move(e, goal_column - ll); |
---|
| 889 | |
---|
| 890 | e->goal_column = goal_column; |
---|
| 891 | |
---|
| 892 | return distance; |
---|
[7d4fbcd] | 893 | } |
---|
| 894 | |
---|
[c9334b1] | 895 | void owl_editwin_backspace(owl_editwin *e) |
---|
| 896 | { |
---|
[7d4fbcd] | 897 | /* delete the char before the current one |
---|
| 898 | * and shift later chars left |
---|
| 899 | */ |
---|
[a556caa] | 900 | if(owl_editwin_point_move(e, -1)) |
---|
[7d4fbcd] | 901 | owl_editwin_delete_char(e); |
---|
| 902 | } |
---|
| 903 | |
---|
[c9334b1] | 904 | void owl_editwin_key_up(owl_editwin *e) |
---|
| 905 | { |
---|
[a556caa] | 906 | owl_editwin_line_move(e, -1); |
---|
[7d4fbcd] | 907 | } |
---|
| 908 | |
---|
[c9334b1] | 909 | void owl_editwin_key_down(owl_editwin *e) |
---|
| 910 | { |
---|
[a556caa] | 911 | owl_editwin_line_move(e, 1); |
---|
[7d4fbcd] | 912 | } |
---|
| 913 | |
---|
[c9334b1] | 914 | void owl_editwin_key_left(owl_editwin *e) |
---|
| 915 | { |
---|
[a556caa] | 916 | owl_editwin_point_move(e, -1); |
---|
[7d4fbcd] | 917 | } |
---|
| 918 | |
---|
[c9334b1] | 919 | void owl_editwin_key_right(owl_editwin *e) |
---|
| 920 | { |
---|
[a556caa] | 921 | owl_editwin_point_move(e, 1); |
---|
[7d4fbcd] | 922 | } |
---|
| 923 | |
---|
[5b5f3e6] | 924 | int owl_editwin_forward_word(owl_editwin *e) |
---|
[c9334b1] | 925 | { |
---|
[5b5f3e6] | 926 | int distance; |
---|
[7d4fbcd] | 927 | /* if we're starting on a space, find the first non-space */ |
---|
[5b5f3e6] | 928 | distance = owl_editwin_move_if_in(e, 1, WHITESPACE); |
---|
[7d4fbcd] | 929 | |
---|
[a556caa] | 930 | /* now find the end of this word */ |
---|
[5b5f3e6] | 931 | distance += owl_editwin_move_if_not_in(e, 1, WHITESPACE); |
---|
| 932 | |
---|
| 933 | return distance; |
---|
| 934 | } |
---|
| 935 | |
---|
| 936 | void owl_editwin_move_to_nextword(owl_editwin *e) |
---|
| 937 | { |
---|
| 938 | owl_editwin_forward_word(e); |
---|
[7d4fbcd] | 939 | } |
---|
| 940 | |
---|
[c9334b1] | 941 | /* go backwards to the last non-space character |
---|
| 942 | */ |
---|
[5b5f3e6] | 943 | int owl_editwin_backward_word(owl_editwin *e) |
---|
[c9334b1] | 944 | { |
---|
[a0fbdee] | 945 | oe_excursion x; |
---|
[5b5f3e6] | 946 | int distance = 0; |
---|
| 947 | int further = 0; |
---|
[a556caa] | 948 | int beginning; |
---|
| 949 | /* if in middle of word, beginning of word */ |
---|
| 950 | |
---|
| 951 | /* if at beginning of a word, find beginning of previous word */ |
---|
| 952 | |
---|
[e20d8179] | 953 | if (owl_editwin_is_char_in(e, WHITESPACE)) { |
---|
[a556caa] | 954 | /* if in whitespace past end of word, find a word , the find the beginning*/ |
---|
[5b5f3e6] | 955 | distance += owl_editwin_move_if_in(e, -1, WHITESPACE); /* leaves us on the last |
---|
| 956 | character of the word */ |
---|
[a0fbdee] | 957 | oe_save_excursion(e, &x); |
---|
[a556caa] | 958 | /* are we at the beginning of a word? */ |
---|
| 959 | owl_editwin_point_move(e, -1); |
---|
[e20d8179] | 960 | beginning = owl_editwin_is_char_in(e, WHITESPACE); |
---|
[a0fbdee] | 961 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 962 | if (beginning) |
---|
[5b5f3e6] | 963 | return distance; |
---|
[a556caa] | 964 | } else { |
---|
| 965 | /* in the middle of the word; */ |
---|
[a0fbdee] | 966 | oe_save_excursion(e, &x); |
---|
[5b5f3e6] | 967 | further += owl_editwin_point_move(e, -1); |
---|
[e20d8179] | 968 | if (owl_editwin_is_char_in(e, WHITESPACE)) { /* we were at the beginning */ |
---|
[5b5f3e6] | 969 | distance += owl_editwin_backward_word(e); /* previous case */ |
---|
[8321cb7] | 970 | oe_release_excursion(e, &x); |
---|
[5b5f3e6] | 971 | return distance + further; |
---|
[a556caa] | 972 | } else { |
---|
[a0fbdee] | 973 | oe_restore_excursion(e, &x); |
---|
[7d4fbcd] | 974 | } |
---|
| 975 | } |
---|
[5b5f3e6] | 976 | distance += owl_editwin_move_if_not_in(e, -1, WHITESPACE); |
---|
[a556caa] | 977 | /* will go past */ |
---|
| 978 | if (e->index > e->lock) |
---|
[5b5f3e6] | 979 | distance += owl_editwin_point_move(e, 1); |
---|
| 980 | return distance; |
---|
| 981 | } |
---|
| 982 | |
---|
| 983 | void owl_editwin_move_to_previousword(owl_editwin *e) |
---|
| 984 | { |
---|
| 985 | owl_editwin_backward_word(e); |
---|
[7d4fbcd] | 986 | } |
---|
| 987 | |
---|
[c9334b1] | 988 | void owl_editwin_delete_nextword(owl_editwin *e) |
---|
| 989 | { |
---|
[a0fbdee] | 990 | oe_excursion x; |
---|
[a556caa] | 991 | |
---|
[a0fbdee] | 992 | oe_save_excursion(e, &x); |
---|
[a60edf2] | 993 | oe_set_mark(e, e->index); |
---|
| 994 | owl_editwin_forward_word(e); |
---|
| 995 | owl_editwin_kill_region(e); |
---|
| 996 | oe_restore_mark_only(e, &x); |
---|
[7d4fbcd] | 997 | } |
---|
| 998 | |
---|
[c9334b1] | 999 | void owl_editwin_delete_previousword(owl_editwin *e) |
---|
| 1000 | { |
---|
[a60edf2] | 1001 | oe_excursion x; |
---|
[b68f9cd] | 1002 | |
---|
[a60edf2] | 1003 | oe_save_excursion(e, &x); |
---|
| 1004 | oe_set_mark(e, e->index); |
---|
| 1005 | owl_editwin_backward_word(e); |
---|
| 1006 | owl_editwin_kill_region(e); |
---|
| 1007 | oe_restore_mark_only(e, &x); |
---|
[b68f9cd] | 1008 | } |
---|
| 1009 | |
---|
[a556caa] | 1010 | void owl_editwin_move_to_line_end(owl_editwin *e) |
---|
[c9334b1] | 1011 | { |
---|
[a556caa] | 1012 | owl_editwin_move_to_end_of_line(e); |
---|
[7d4fbcd] | 1013 | } |
---|
| 1014 | |
---|
[a556caa] | 1015 | void owl_editwin_delete_to_endofline(owl_editwin *e) |
---|
[c9334b1] | 1016 | { |
---|
[a0fbdee] | 1017 | oe_excursion x; |
---|
[5b5f3e6] | 1018 | int distance; |
---|
[a556caa] | 1019 | |
---|
[a0fbdee] | 1020 | oe_save_excursion(e, &x); |
---|
[a60edf2] | 1021 | owl_editwin_set_mark(e); |
---|
[5b5f3e6] | 1022 | distance = owl_editwin_move_to_end_of_line(e); |
---|
[a60edf2] | 1023 | if (distance) |
---|
| 1024 | owl_editwin_kill_region(e); |
---|
| 1025 | else |
---|
| 1026 | owl_editwin_replace(e, 1, ""); |
---|
[a0fbdee] | 1027 | oe_restore_excursion(e, &x); |
---|
[a60edf2] | 1028 | } |
---|
| 1029 | |
---|
| 1030 | void owl_editwin_yank(owl_editwin *e) |
---|
| 1031 | { |
---|
| 1032 | if (e->killbuf != NULL) |
---|
| 1033 | owl_editwin_replace(e, 0, e->killbuf); |
---|
| 1034 | } |
---|
| 1035 | |
---|
[e19eb97] | 1036 | static const char *oe_copy_buf(owl_editwin *e, const char *buf, int len) |
---|
[a60edf2] | 1037 | { |
---|
| 1038 | char *p; |
---|
| 1039 | |
---|
| 1040 | p = owl_malloc(len + 1); |
---|
| 1041 | |
---|
| 1042 | if (p != NULL) { |
---|
| 1043 | owl_free(e->killbuf); |
---|
| 1044 | e->killbuf = p; |
---|
| 1045 | memcpy(e->killbuf, buf, len); |
---|
| 1046 | e->killbuf[len] = 0; |
---|
| 1047 | } |
---|
| 1048 | |
---|
| 1049 | return p; |
---|
| 1050 | } |
---|
| 1051 | |
---|
| 1052 | static int oe_copy_region(owl_editwin *e) |
---|
| 1053 | { |
---|
[e19eb97] | 1054 | const char *p; |
---|
[a60edf2] | 1055 | int start, end; |
---|
| 1056 | |
---|
| 1057 | if (e->mark == -1) |
---|
| 1058 | return 0; |
---|
| 1059 | |
---|
| 1060 | start = MIN(e->index, e->mark); |
---|
| 1061 | end = MAX(e->index, e->mark); |
---|
| 1062 | |
---|
| 1063 | p = oe_copy_buf(e, e->buff + start, end - start); |
---|
| 1064 | if (p != NULL) |
---|
| 1065 | return end - start; |
---|
| 1066 | return 0; |
---|
| 1067 | } |
---|
| 1068 | |
---|
| 1069 | void owl_editwin_copy_region_as_kill(owl_editwin *e) |
---|
| 1070 | { |
---|
| 1071 | oe_copy_region(e); |
---|
| 1072 | } |
---|
| 1073 | |
---|
| 1074 | void owl_editwin_kill_region(owl_editwin *e) |
---|
| 1075 | { |
---|
| 1076 | if (e->index > e->mark) |
---|
| 1077 | owl_editwin_exchange_point_and_mark(e); |
---|
| 1078 | |
---|
[2184001] | 1079 | owl_editwin_replace_internal(e, oe_copy_region(e), ""); |
---|
[7d4fbcd] | 1080 | } |
---|
| 1081 | |
---|
[c9334b1] | 1082 | void owl_editwin_move_to_line_start(owl_editwin *e) |
---|
| 1083 | { |
---|
[a556caa] | 1084 | owl_editwin_move_to_beginning_of_line(e); |
---|
[7d4fbcd] | 1085 | } |
---|
| 1086 | |
---|
[c9334b1] | 1087 | void owl_editwin_move_to_end(owl_editwin *e) |
---|
| 1088 | { |
---|
[521bc84] | 1089 | oe_set_index(e, e->bufflen); |
---|
[7d4fbcd] | 1090 | } |
---|
| 1091 | |
---|
[c9334b1] | 1092 | void owl_editwin_move_to_top(owl_editwin *e) |
---|
| 1093 | { |
---|
[521bc84] | 1094 | oe_set_index(e, e->lock); |
---|
[7d4fbcd] | 1095 | } |
---|
| 1096 | |
---|
[2fc8397] | 1097 | void owl_editwin_backward_paragraph(owl_editwin *e) |
---|
| 1098 | { |
---|
| 1099 | owl_editwin_point_move(e, -1); |
---|
| 1100 | for (; e->index >= e->lock; owl_editwin_point_move(e, -1)) { |
---|
| 1101 | if (e->index <= e->lock || |
---|
| 1102 | ((e->buff[e->index] == '\n') && (e->buff[e->index - 1]=='\n'))) |
---|
| 1103 | break; |
---|
| 1104 | } |
---|
| 1105 | } |
---|
| 1106 | |
---|
| 1107 | void owl_editwin_forward_paragraph(owl_editwin *e) |
---|
| 1108 | { |
---|
| 1109 | owl_editwin_point_move(e, 1); |
---|
| 1110 | /* scan forward to the start of the next paragraph */ |
---|
| 1111 | for(; e->index < e->bufflen; owl_editwin_point_move(e, 1)) { |
---|
| 1112 | if (e->buff[e->index -1] == '\n' && e->buff[e->index] == '\n') |
---|
| 1113 | break; |
---|
| 1114 | } |
---|
| 1115 | } |
---|
| 1116 | |
---|
[d41294a] | 1117 | int owl_editwin_current_column(owl_editwin *e) |
---|
[c9334b1] | 1118 | { |
---|
[a0fbdee] | 1119 | oe_excursion x; |
---|
[fc2677b] | 1120 | int lineindex; |
---|
[7d4fbcd] | 1121 | |
---|
[a0fbdee] | 1122 | oe_save_excursion(e, &x); |
---|
[fc2677b] | 1123 | owl_editwin_move_to_beginning_of_line(e); |
---|
| 1124 | lineindex = e->index; |
---|
| 1125 | oe_restore_excursion(e, &x); |
---|
| 1126 | return oe_region_width(e, lineindex, e->index, 0); |
---|
| 1127 | } |
---|
[a556caa] | 1128 | |
---|
[fc2677b] | 1129 | void owl_editwin_fill_paragraph(owl_editwin *e) |
---|
| 1130 | { |
---|
| 1131 | oe_excursion x; |
---|
| 1132 | gunichar ch; |
---|
| 1133 | int sentence; |
---|
[7d4fbcd] | 1134 | |
---|
[fc2677b] | 1135 | oe_save_excursion(e, &x); |
---|
[7d4fbcd] | 1136 | |
---|
[fc2677b] | 1137 | /* Mark the end of the paragraph */ |
---|
| 1138 | owl_editwin_forward_paragraph(e); |
---|
| 1139 | /* Skip the trailing newline */ |
---|
| 1140 | owl_editwin_point_move(e, -1); |
---|
| 1141 | owl_editwin_set_mark(e); |
---|
[7d4fbcd] | 1142 | |
---|
[fc2677b] | 1143 | owl_editwin_backward_paragraph(e); |
---|
[7d4fbcd] | 1144 | |
---|
[fc2677b] | 1145 | /* Don't mess with the leading newline */ |
---|
| 1146 | if (owl_editwin_get_char_at_point(e) == '\n') |
---|
| 1147 | owl_editwin_point_move(e, 1); |
---|
[7d4fbcd] | 1148 | |
---|
[fc2677b] | 1149 | /* |
---|
| 1150 | * First pass: Scan forward replacing all series of spaces with ' ' |
---|
| 1151 | * (or nothing after CJK ideograms) |
---|
| 1152 | */ |
---|
| 1153 | sentence = 0; |
---|
| 1154 | for(;e->index < e->mark; owl_editwin_point_move(e, 1)) { |
---|
[50e671c] | 1155 | /* bail if we hit a trailing dot on the buffer */ |
---|
[fc2677b] | 1156 | if (strcmp(e->buff + e->index, "\n.") == 0) { |
---|
| 1157 | owl_editwin_set_mark(e); |
---|
[50e671c] | 1158 | break; |
---|
[7d4fbcd] | 1159 | } |
---|
| 1160 | |
---|
[fc2677b] | 1161 | ch = owl_editwin_get_char_at_point(e); |
---|
[b2c1bd4] | 1162 | |
---|
[fc2677b] | 1163 | if (owl_util_can_break_after(ch) || ch == '\n') { |
---|
| 1164 | if (g_unichar_isspace(ch)) { |
---|
| 1165 | owl_editwin_replace(e, 1, " "); |
---|
| 1166 | } |
---|
| 1167 | |
---|
[f9d257b] | 1168 | if (sentence && g_unichar_isspace(owl_editwin_get_char_at_point(e)) |
---|
| 1169 | && e->index < e->mark) |
---|
[fc2677b] | 1170 | owl_editwin_point_move(e, 1); |
---|
| 1171 | |
---|
| 1172 | while(g_unichar_isspace(owl_editwin_get_char_at_point(e)) |
---|
| 1173 | && e->index < e->mark) { |
---|
| 1174 | owl_editwin_delete_char(e); |
---|
[7d4fbcd] | 1175 | } |
---|
| 1176 | } |
---|
[fc2677b] | 1177 | |
---|
| 1178 | if(ch == '.' || ch == '!' || ch == '?') |
---|
| 1179 | sentence = 1; |
---|
| 1180 | else |
---|
| 1181 | sentence = 0; |
---|
| 1182 | } |
---|
| 1183 | |
---|
| 1184 | owl_editwin_backward_paragraph(e); |
---|
| 1185 | |
---|
| 1186 | /* Now go through inserting newlines as needed */ |
---|
| 1187 | while(e->index < e->mark) { |
---|
| 1188 | /* if we've travelled too far, linewrap */ |
---|
[d41294a] | 1189 | if (owl_editwin_current_column(e) >= e->fillcol) |
---|
[fc2677b] | 1190 | _owl_editwin_linewrap_word(e); |
---|
| 1191 | owl_editwin_point_move(e, 1); |
---|
[7d4fbcd] | 1192 | } |
---|
| 1193 | |
---|
[a0fbdee] | 1194 | oe_restore_excursion(e, &x); |
---|
[7d4fbcd] | 1195 | } |
---|
| 1196 | |
---|
[cf83b7a] | 1197 | /* returns true if only whitespace remains */ |
---|
[c9334b1] | 1198 | int owl_editwin_is_at_end(owl_editwin *e) |
---|
| 1199 | { |
---|
[a556caa] | 1200 | return (only_whitespace(e->buff + e->index)); |
---|
[217a43e] | 1201 | } |
---|
| 1202 | |
---|
[bab52da] | 1203 | static int owl_editwin_check_dotsend(owl_editwin *e) |
---|
[c9334b1] | 1204 | { |
---|
[dc7884d] | 1205 | int zdot = 0; |
---|
[72ab15f] | 1206 | oe_excursion x; |
---|
[7d4fbcd] | 1207 | |
---|
| 1208 | if (!e->dotsend) return(0); |
---|
[4ccd92c] | 1209 | if (!owl_editwin_is_at_end(e)) return (0); |
---|
[47519e1b] | 1210 | |
---|
[72ab15f] | 1211 | oe_save_excursion(e, &x); |
---|
| 1212 | |
---|
| 1213 | owl_editwin_point_move(e, -3); |
---|
| 1214 | |
---|
[4ccd92c] | 1215 | if(strncmp(e->buff + e->index, "\n.\n", 3) == 0) { |
---|
[dc7884d] | 1216 | owl_editwin_point_move(e, 1); |
---|
| 1217 | zdot = 1; |
---|
[0509efc] | 1218 | } else if(e->index == e->lock && |
---|
[4ccd92c] | 1219 | strncmp(e->buff + e->index, ".\n", 2) == 0) { |
---|
[0509efc] | 1220 | zdot = 1; |
---|
| 1221 | } |
---|
| 1222 | |
---|
| 1223 | if(zdot) { |
---|
[4ccd92c] | 1224 | owl_editwin_set_mark(e); |
---|
| 1225 | owl_editwin_move_to_end(e); |
---|
| 1226 | owl_editwin_replace_region(e, ""); |
---|
[dc7884d] | 1227 | } |
---|
[72ab15f] | 1228 | |
---|
| 1229 | oe_restore_excursion(e, &x); |
---|
| 1230 | |
---|
| 1231 | return zdot; |
---|
[7d4fbcd] | 1232 | } |
---|
| 1233 | |
---|
[fac5463] | 1234 | void owl_editwin_post_process_char(owl_editwin *e, owl_input j) |
---|
[c9334b1] | 1235 | { |
---|
[a556caa] | 1236 | /* XXX force a redisplay? */ |
---|
[fac5463] | 1237 | if ((j.ch==13 || j.ch==10) && owl_editwin_check_dotsend(e)) { |
---|
[435d6b2] | 1238 | owl_command_edit_done(e); |
---|
[7d4fbcd] | 1239 | return; |
---|
| 1240 | } |
---|
[2ee9e8d] | 1241 | owl_editwin_redisplay(e); |
---|
[7d4fbcd] | 1242 | } |
---|
| 1243 | |
---|
[3e36085] | 1244 | static int oe_region_width(owl_editwin *e, int start, int end, int offset) |
---|
[16cfd12a] | 1245 | { |
---|
[e19eb97] | 1246 | const char *p; |
---|
[3e36085] | 1247 | int width = offset; |
---|
| 1248 | |
---|
[16cfd12a] | 1249 | for(p = e->buff + start; |
---|
| 1250 | p < e->buff + end; |
---|
| 1251 | p = g_utf8_find_next_char(p, NULL)) |
---|
| 1252 | width += oe_char_width(g_utf8_get_char(p), width); |
---|
| 1253 | |
---|
[3e36085] | 1254 | return width - offset; |
---|
[16cfd12a] | 1255 | } |
---|
| 1256 | |
---|
[ebf0128] | 1257 | static void oe_insert_char(owl_editwin *e, gunichar c) |
---|
[fac5463] | 1258 | { |
---|
[16cfd12a] | 1259 | oe_excursion x; |
---|
[5b5f3e6] | 1260 | char tmp[7]; |
---|
[16cfd12a] | 1261 | int replaced = -1; |
---|
[5b5f3e6] | 1262 | |
---|
[ebf0128] | 1263 | if (c == '\r') /* translate CRs to NLs */ |
---|
| 1264 | c = '\n'; |
---|
| 1265 | |
---|
[16cfd12a] | 1266 | if (!g_unichar_iscntrl(c) || c == '\n' || c== '\t' ) { |
---|
[ebf0128] | 1267 | if (c == '\n' && e->style == OWL_EDITWIN_STYLE_ONELINE) { |
---|
| 1268 | return; |
---|
| 1269 | } |
---|
| 1270 | |
---|
[16cfd12a] | 1271 | if (e->cursorx != -1 && e->cursorx + oe_char_width(c, e->cursorx) > e->wrapcol) { |
---|
| 1272 | /* XXX this is actually wrong: |
---|
| 1273 | * + If the line has been been wrapped, we can be past the wrap column but |
---|
| 1274 | * e->cursorx be much smaller. |
---|
| 1275 | * + If the user went back and inserted a bunch of stuff in the middle of |
---|
| 1276 | * the line, there may be more than one word past the wrap column. |
---|
| 1277 | */ |
---|
| 1278 | oe_save_excursion(e, &x); |
---|
| 1279 | |
---|
| 1280 | if (c == ' ' || c == '\t') { |
---|
| 1281 | owl_editwin_point_move(e, -1); |
---|
| 1282 | replaced = -owl_editwin_move_if_in(e, -1, " \t"); |
---|
| 1283 | if (!replaced) { |
---|
| 1284 | c = '\n'; |
---|
| 1285 | replaced = -1; |
---|
| 1286 | } |
---|
| 1287 | } else { |
---|
| 1288 | while(!owl_editwin_at_beginning_of_line(e)) { |
---|
| 1289 | owl_editwin_point_move(e, -1); |
---|
| 1290 | if (owl_util_can_break_after(owl_editwin_get_char_at_point(e))) { |
---|
| 1291 | replaced = -owl_editwin_move_if_in(e, -1, " \t"); |
---|
| 1292 | break; |
---|
| 1293 | } |
---|
| 1294 | } |
---|
| 1295 | if (owl_editwin_at_beginning_of_line(e)) |
---|
| 1296 | replaced = -1; |
---|
| 1297 | } |
---|
| 1298 | if (replaced && !owl_editwin_at_beginning_of_line(e)) |
---|
| 1299 | owl_editwin_point_move(e, 1); |
---|
| 1300 | if (replaced >= 0) { |
---|
| 1301 | owl_editwin_replace(e, replaced, "\n"); |
---|
| 1302 | } |
---|
| 1303 | oe_restore_excursion(e, &x); |
---|
| 1304 | } |
---|
| 1305 | |
---|
| 1306 | if (replaced >= 0 && (c == ' ' || c == '\t')) |
---|
| 1307 | return; /* our work here is done */ |
---|
| 1308 | |
---|
[6c171f1] | 1309 | tmp[g_unichar_to_utf8(c, tmp)] = '\0'; |
---|
[ebf0128] | 1310 | owl_editwin_replace(e, 0, tmp); |
---|
| 1311 | } |
---|
| 1312 | } |
---|
| 1313 | |
---|
| 1314 | void owl_editwin_process_char(owl_editwin *e, owl_input j) |
---|
| 1315 | { |
---|
[5b5f3e6] | 1316 | if (j.ch == ERR) |
---|
| 1317 | return; |
---|
[fac5463] | 1318 | /* Ignore ncurses control characters. */ |
---|
[e20d8179] | 1319 | if (j.ch < 0x100) { |
---|
[ebf0128] | 1320 | oe_insert_char(e, j.uch); |
---|
[fac5463] | 1321 | } |
---|
| 1322 | } |
---|
| 1323 | |
---|
[e19eb97] | 1324 | const char *owl_editwin_get_text(owl_editwin *e) |
---|
[c9334b1] | 1325 | { |
---|
[7d4fbcd] | 1326 | return(e->buff+e->lock); |
---|
| 1327 | } |
---|
| 1328 | |
---|
[d41294a] | 1329 | char *owl_editwin_get_region(owl_editwin *e) |
---|
| 1330 | { |
---|
| 1331 | int start, end; |
---|
| 1332 | start = e->index; |
---|
| 1333 | end = e->mark; |
---|
| 1334 | if(start > end) { |
---|
| 1335 | int tmp = end; |
---|
| 1336 | end = start; |
---|
| 1337 | start = tmp; |
---|
| 1338 | } |
---|
| 1339 | |
---|
| 1340 | return oe_chunk(e, start, end); |
---|
| 1341 | } |
---|
| 1342 | |
---|
[77f605d] | 1343 | int owl_editwin_get_echochar(owl_editwin *e) |
---|
| 1344 | { |
---|
[a556caa] | 1345 | return e->echochar; |
---|
| 1346 | } |
---|
[77f605d] | 1347 | |
---|
| 1348 | static char *oe_chunk(owl_editwin *e, int start, int end) |
---|
| 1349 | { |
---|
| 1350 | char *p; |
---|
| 1351 | |
---|
| 1352 | p = owl_malloc(end - start + 1); |
---|
| 1353 | memcpy(p, e->buff + start, end - start); |
---|
| 1354 | p[end - start] = 0; |
---|
| 1355 | |
---|
| 1356 | return p; |
---|
| 1357 | } |
---|
| 1358 | |
---|
[d41294a] | 1359 | /* |
---|
| 1360 | * The only guarantee made about these values is that comparisons |
---|
| 1361 | * between them, as well as comparison between multiple calls to these |
---|
| 1362 | * functions without modifying the editwin in-between, are meaningful. |
---|
| 1363 | */ |
---|
| 1364 | |
---|
| 1365 | int owl_editwin_get_point(owl_editwin *e) |
---|
| 1366 | { |
---|
| 1367 | return e->index; |
---|
| 1368 | } |
---|
| 1369 | |
---|
| 1370 | int owl_editwin_get_mark(owl_editwin *e) |
---|
| 1371 | { |
---|
| 1372 | return e->mark; |
---|
| 1373 | } |
---|
| 1374 | |
---|
[2f21a41] | 1375 | |
---|
| 1376 | /* |
---|
| 1377 | * Local Variables: |
---|
| 1378 | * mode:C |
---|
| 1379 | * c-basic-offset:2 |
---|
| 1380 | * End: |
---|
| 1381 | */ |
---|