[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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| 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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[e19eb97] | 47 | static int oe_count_glyphs(const char *s); |
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[ebf0128] | 48 | static int oe_char_width(gunichar c, int column); |
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[16cfd12a] | 49 | static int oe_region_width(owl_editwin *e, int start, int end, int width); |
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[bab52da] | 50 | static int oe_find_display_line(owl_editwin *e, int *x, int index); |
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[ebf0128] | 51 | static void oe_insert_char(owl_editwin *e, gunichar c); |
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[bab52da] | 52 | static int owl_editwin_limit_maxcols(int v, int maxv); |
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| 53 | static int owl_editwin_check_dotsend(owl_editwin *e); |
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[e19eb97] | 54 | static int owl_editwin_is_char_in(owl_editwin *e, const char *set); |
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[bab52da] | 55 | static gunichar owl_editwin_get_char_at_point(owl_editwin *e); |
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[e19eb97] | 56 | static int owl_editwin_replace_internal(owl_editwin *e, int replace, const char *s); |
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| 57 | static const char *oe_copy_buf(owl_editwin *e, const char *buf, int len); |
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[a60edf2] | 58 | static int oe_copy_region(owl_editwin *e); |
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[77f605d] | 59 | static char *oe_chunk(owl_editwin *e, int start, int end); |
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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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[bab52da] | 65 | owl_editwin *owl_editwin_allocate(void) |
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| 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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[6211c76] | 73 | void owl_editwin_free(owl_editwin *e) |
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| 74 | { |
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| 75 | owl_free(e->buff); |
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| 76 | owl_free(e->killbuf); |
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| 77 | owl_free(e->command); |
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| 78 | /* just in case someone forgot to clean up */ |
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| 79 | while (e->excursions) { |
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| 80 | oe_release_excursion(e, e->excursions); |
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| 81 | } |
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| 82 | |
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| 83 | owl_free(e); |
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| 84 | } |
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| 85 | |
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[e19eb97] | 86 | static int oe_count_glyphs(const char *s) |
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[5b5f3e6] | 87 | { |
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| 88 | int count = 0; |
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[e19eb97] | 89 | const char *p; |
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[5b5f3e6] | 90 | |
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| 91 | for(p = s; *p != 0; p = g_utf8_find_next_char(p, NULL)) |
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| 92 | if (!g_unichar_ismark(g_utf8_get_char(p))) |
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| 93 | count++; |
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| 94 | |
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| 95 | return count; |
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| 96 | } |
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| 97 | |
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[bab52da] | 98 | static inline void oe_set_index(owl_editwin *e, int index) |
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| 99 | { |
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[ebf0128] | 100 | if (index != e->index) { |
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| 101 | e->goal_column = -1; |
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| 102 | e->cursorx = -1; |
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| 103 | } |
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[521bc84] | 104 | e->index = index; |
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| 105 | } |
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| 106 | |
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[7f0c26f] | 107 | static inline void oe_set_mark(owl_editwin *e, int mark) |
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| 108 | { |
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| 109 | e->mark = mark; |
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| 110 | } |
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| 111 | |
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| 112 | void owl_editwin_set_mark(owl_editwin *e) |
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| 113 | { |
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| 114 | oe_set_mark(e, e->index); |
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| 115 | /* owl_function_makemsg("Mark set."); */ |
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| 116 | } |
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| 117 | |
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[cf83b7a] | 118 | /* initialize the editwin e. |
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| 119 | * 'win' is an already initialzed curses window that will be used by editwin |
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| 120 | */ |
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[c9334b1] | 121 | void owl_editwin_init(owl_editwin *e, WINDOW *win, int winlines, int wincols, int style, owl_history *hist) |
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| 122 | { |
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[e20d8179] | 123 | e->buff=owl_malloc(INCR); |
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[7d4fbcd] | 124 | e->buff[0]='\0'; |
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| 125 | e->bufflen=0; |
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[10b866d] | 126 | e->hist=hist; |
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[7d4fbcd] | 127 | e->allocated=INCR; |
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[521bc84] | 128 | oe_set_index(e, 0); |
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[7f0c26f] | 129 | oe_set_mark(e, -1); |
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[a60edf2] | 130 | if (e->killbuf != NULL) |
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[27f6487] | 131 | owl_free(e->killbuf); |
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[a60edf2] | 132 | e->killbuf = NULL; |
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[a556caa] | 133 | e->goal_column = -1; |
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[ebf0128] | 134 | e->cursorx = -1; |
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| 135 | e->topindex = 0; |
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| 136 | e->excursions = NULL; |
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| 137 | owl_editwin_set_curswin(e, win, winlines, wincols); |
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[7d4fbcd] | 138 | e->style=style; |
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| 139 | if ((style!=OWL_EDITWIN_STYLE_MULTILINE) && |
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| 140 | (style!=OWL_EDITWIN_STYLE_ONELINE)) { |
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| 141 | e->style=OWL_EDITWIN_STYLE_MULTILINE; |
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| 142 | } |
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| 143 | e->lock=0; |
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| 144 | e->dotsend=0; |
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[c9334b1] | 145 | e->echochar='\0'; |
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[e74c01c] | 146 | |
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[af1920fd] | 147 | /* We get initialized multiple times, but we need to hold on to |
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| 148 | the callbacks, so we can't NULL them here. */ |
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[e74c01c] | 149 | /* |
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| 150 | e->command = NULL; |
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| 151 | e->callback = NULL; |
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| 152 | e->cbdata = NULL; |
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| 153 | */ |
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[7d4fbcd] | 154 | if (win) werase(win); |
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| 155 | } |
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| 156 | |
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[c9334b1] | 157 | void owl_editwin_set_curswin(owl_editwin *e, WINDOW *w, int winlines, int wincols) |
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| 158 | { |
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[7d4fbcd] | 159 | e->curswin=w; |
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| 160 | e->winlines=winlines; |
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| 161 | e->wincols=wincols; |
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[9a6cc40] | 162 | e->fillcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxfillcols(&g)); |
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| 163 | e->wrapcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxwrapcols(&g)); |
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[7d4fbcd] | 164 | } |
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| 165 | |
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[c9334b1] | 166 | /* echo the character 'ch' for each normal character keystroke, |
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| 167 | * excepting locktext. This is useful for entering passwords etc. If |
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| 168 | * ch=='\0' characters are echo'd normally |
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| 169 | */ |
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| 170 | void owl_editwin_set_echochar(owl_editwin *e, int ch) |
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| 171 | { |
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| 172 | e->echochar=ch; |
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| 173 | } |
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| 174 | |
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| 175 | WINDOW *owl_editwin_get_curswin(owl_editwin *e) |
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| 176 | { |
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[060b3b4] | 177 | return(e->curswin); |
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[7d4fbcd] | 178 | } |
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| 179 | |
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[c9334b1] | 180 | owl_history *owl_editwin_get_history(owl_editwin *e) |
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| 181 | { |
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[060b3b4] | 182 | return(e->hist); |
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[10b866d] | 183 | } |
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| 184 | |
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[c9334b1] | 185 | void owl_editwin_set_dotsend(owl_editwin *e) |
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| 186 | { |
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[7d4fbcd] | 187 | e->dotsend=1; |
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| 188 | } |
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| 189 | |
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[e19eb97] | 190 | void owl_editwin_set_command(owl_editwin *e, const char *command) |
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[bab52da] | 191 | { |
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[e74c01c] | 192 | if(e->command) owl_free(e->command); |
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| 193 | e->command = owl_strdup(command); |
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| 194 | } |
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| 195 | |
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[e19eb97] | 196 | const char *owl_editwin_get_command(owl_editwin *e) |
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[bab52da] | 197 | { |
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[e74c01c] | 198 | if(e->command) return e->command; |
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| 199 | return ""; |
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| 200 | } |
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| 201 | |
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[bab52da] | 202 | void owl_editwin_set_callback(owl_editwin *e, void (*cb)(owl_editwin*)) |
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| 203 | { |
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[e74c01c] | 204 | e->callback = cb; |
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| 205 | } |
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| 206 | |
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[bab52da] | 207 | void (*owl_editwin_get_callback(owl_editwin *e))(owl_editwin*) |
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| 208 | { |
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[e74c01c] | 209 | return e->callback; |
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| 210 | } |
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| 211 | |
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[bab52da] | 212 | void owl_editwin_set_cbdata(owl_editwin *e, void *data) |
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| 213 | { |
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[e74c01c] | 214 | e->cbdata = data; |
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| 215 | } |
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| 216 | |
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[a556caa] | 217 | void *owl_editwin_get_cbdata(owl_editwin *e) { |
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[e74c01c] | 218 | return e->cbdata; |
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| 219 | } |
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| 220 | |
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| 221 | void owl_editwin_do_callback(owl_editwin *e) { |
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| 222 | void (*cb)(owl_editwin*); |
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| 223 | cb=owl_editwin_get_callback(e); |
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| 224 | if(!cb) { |
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| 225 | owl_function_error("Internal error: No editwin callback!"); |
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| 226 | } else { |
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[af1920fd] | 227 | /* owl_function_error("text: |%s|", owl_editwin_get_text(e)); */ |
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[e74c01c] | 228 | cb(e); |
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| 229 | } |
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| 230 | } |
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| 231 | |
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[bab52da] | 232 | static int owl_editwin_limit_maxcols(int v, int maxv) |
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[c9334b1] | 233 | { |
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[ebf0128] | 234 | /* maxv > 5 ? MAX(v, vax) : v */ |
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[d36f2cb] | 235 | if (maxv > 5 && v > maxv) { |
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[060b3b4] | 236 | return(maxv); |
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[d36f2cb] | 237 | } else { |
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[060b3b4] | 238 | return(v); |
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[d36f2cb] | 239 | } |
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| 240 | } |
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| 241 | |
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[c9334b1] | 242 | /* set text to be 'locked in' at the beginning of the buffer, any |
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| 243 | * previous text (including locked text) will be overwritten |
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| 244 | */ |
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[e19eb97] | 245 | void owl_editwin_set_locktext(owl_editwin *e, const char *text) |
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[c9334b1] | 246 | { |
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[521bc84] | 247 | oe_set_index(e, 0); |
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[5b5f3e6] | 248 | e->lock = 0; |
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| 249 | owl_editwin_replace(e, e->bufflen, text); |
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| 250 | e->buff[e->bufflen] = 0; |
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| 251 | e->lock=e->bufflen; |
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[521bc84] | 252 | oe_set_index(e, e->lock); |
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[7d4fbcd] | 253 | owl_editwin_redisplay(e, 0); |
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| 254 | } |
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| 255 | |
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[c9334b1] | 256 | int owl_editwin_get_style(owl_editwin *e) |
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| 257 | { |
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[7d4fbcd] | 258 | return(e->style); |
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| 259 | } |
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| 260 | |
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[c9334b1] | 261 | void owl_editwin_new_style(owl_editwin *e, int newstyle, owl_history *h) |
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| 262 | { |
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[98f1e69] | 263 | e->hist = h; |
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| 264 | |
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[7d4fbcd] | 265 | if (e->style==newstyle) return; |
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| 266 | |
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| 267 | if (newstyle==OWL_EDITWIN_STYLE_MULTILINE) { |
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| 268 | e->style=newstyle; |
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| 269 | } else if (newstyle==OWL_EDITWIN_STYLE_ONELINE) { |
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| 270 | e->style=newstyle; |
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| 271 | |
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| 272 | /* nuke everything after the first line */ |
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[5b5f3e6] | 273 | owl_editwin_move_to_top(e); |
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| 274 | owl_editwin_move_to_end_of_line(e); |
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| 275 | owl_editwin_replace(e, oe_count_glyphs(e->buff + e->index), ""); |
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[7d4fbcd] | 276 | } |
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| 277 | } |
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| 278 | |
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[c9334b1] | 279 | /* completly reinitialize the buffer */ |
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| 280 | void owl_editwin_fullclear(owl_editwin *e) |
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| 281 | { |
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[7d4fbcd] | 282 | owl_free(e->buff); |
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[10b866d] | 283 | owl_editwin_init(e, e->curswin, e->winlines, e->wincols, e->style, e->hist); |
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[7d4fbcd] | 284 | } |
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| 285 | |
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[c9334b1] | 286 | /* clear all text except for locktext and put the cursor at the |
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| 287 | * beginning |
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| 288 | */ |
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| 289 | void owl_editwin_clear(owl_editwin *e) |
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| 290 | { |
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| 291 | |
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[6073462] | 292 | int lock = e->lock; |
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[10b866d] | 293 | int dotsend=e->dotsend; |
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[7d4fbcd] | 294 | char *locktext=NULL; |
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[cc6f009] | 295 | char echochar=e->echochar; |
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[10b866d] | 296 | |
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[6073462] | 297 | if (lock > 0) { |
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[5b5f3e6] | 298 | locktext = owl_malloc(lock+1); |
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| 299 | strncpy(locktext, e->buff, lock); |
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| 300 | locktext[lock] = 0; |
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[7d4fbcd] | 301 | } |
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| 302 | |
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| 303 | owl_free(e->buff); |
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[10b866d] | 304 | owl_editwin_init(e, e->curswin, e->winlines, e->wincols, e->style, e->hist); |
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[7d4fbcd] | 305 | |
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| 306 | if (lock > 0) { |
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| 307 | owl_editwin_set_locktext(e, locktext); |
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| 308 | } |
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[10b866d] | 309 | if (dotsend) { |
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| 310 | owl_editwin_set_dotsend(e); |
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| 311 | } |
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[cc6f009] | 312 | if (echochar) { |
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| 313 | owl_editwin_set_echochar(e, echochar); |
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| 314 | } |
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[7d4fbcd] | 315 | |
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[5b5f3e6] | 316 | if (locktext) |
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| 317 | owl_free(locktext); |
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[6073462] | 318 | |
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[521bc84] | 319 | oe_set_index(e, lock); |
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[7d4fbcd] | 320 | } |
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| 321 | |
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[c9334b1] | 322 | void owl_editwin_recenter(owl_editwin *e) |
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| 323 | { |
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[a556caa] | 324 | e->topindex = -1; |
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| 325 | } |
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[e20d8179] | 326 | |
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[a0fbdee] | 327 | static void oe_save_excursion(owl_editwin *e, oe_excursion *x) |
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| 328 | { |
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| 329 | x->index = e->index; |
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[7f0c26f] | 330 | x->mark = e->mark; |
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[a0fbdee] | 331 | x->goal_column = e->goal_column; |
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| 332 | x->lock = e->lock; |
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[ebf0128] | 333 | |
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| 334 | x->valid = VALID_EXCURSION; |
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| 335 | x->next = e->excursions; |
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| 336 | e->excursions = x; |
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| 337 | } |
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| 338 | |
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| 339 | static void oe_release_excursion(owl_editwin *e, oe_excursion *x) |
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| 340 | { |
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[a85d225] | 341 | oe_excursion **px; |
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[ebf0128] | 342 | |
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| 343 | x->valid = 0; |
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[a85d225] | 344 | for (px = &e->excursions; *px != NULL; px = &(*px)->next) |
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| 345 | if (*px == x) { |
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| 346 | *px = x->next; |
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| 347 | return; |
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| 348 | } |
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| 349 | abort(); |
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[a0fbdee] | 350 | } |
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| 351 | |
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| 352 | static void oe_restore_excursion(owl_editwin *e, oe_excursion *x) |
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| 353 | { |
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[ebf0128] | 354 | if (x->valid == VALID_EXCURSION) { |
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| 355 | oe_set_index(e, x->index); |
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| 356 | e->goal_column = x->goal_column; |
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[7f0c26f] | 357 | e->mark = x->mark; |
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[ebf0128] | 358 | e->lock = x->lock; |
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| 359 | |
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| 360 | oe_release_excursion(e, x); |
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| 361 | } |
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[a0fbdee] | 362 | } |
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| 363 | |
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[a60edf2] | 364 | static void oe_restore_mark_only(owl_editwin *e, oe_excursion *x) |
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| 365 | { |
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| 366 | if (x->valid == VALID_EXCURSION) { |
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| 367 | e->mark = x->mark; |
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| 368 | |
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| 369 | oe_release_excursion(e, x); |
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| 370 | } |
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| 371 | } |
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| 372 | |
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[a88f35a] | 373 | /* External interface to oe_save_excursion */ |
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| 374 | owl_editwin_excursion *owl_editwin_begin_excursion(owl_editwin *e) |
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| 375 | { |
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| 376 | owl_editwin_excursion *x = owl_malloc(sizeof *x); |
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| 377 | oe_save_excursion(e, x); |
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| 378 | return x; |
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| 379 | } |
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| 380 | |
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| 381 | void owl_editwin_end_excursion(owl_editwin *e, owl_editwin_excursion *x) |
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| 382 | { |
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| 383 | oe_restore_excursion(e, x); |
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| 384 | owl_free(x); |
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| 385 | } |
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| 386 | |
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[e19eb97] | 387 | static inline const char *oe_next_point(owl_editwin *e, const char *p) |
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[e20d8179] | 388 | { |
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[e19eb97] | 389 | const char *boundary = e->buff + e->bufflen + 1; |
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| 390 | const char *q; |
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[e20d8179] | 391 | |
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| 392 | q = g_utf8_find_next_char(p, boundary); |
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| 393 | while (q && g_unichar_ismark(g_utf8_get_char(q))) |
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| 394 | q = g_utf8_find_next_char(q, boundary); |
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| 395 | |
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| 396 | if (q == p) |
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| 397 | return NULL; |
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| 398 | return q; |
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| 399 | } |
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| 400 | |
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[e19eb97] | 401 | static inline const char *oe_prev_point(owl_editwin *e, const char *p) |
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[e20d8179] | 402 | { |
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[e19eb97] | 403 | const char *boundary = e->buff + e->lock; |
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[e20d8179] | 404 | |
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| 405 | p = g_utf8_find_prev_char(boundary, p); |
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| 406 | while (p && g_unichar_ismark(g_utf8_get_char(p))) |
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| 407 | p = g_utf8_find_prev_char(boundary, p); |
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| 408 | |
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| 409 | return p; |
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| 410 | } |
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| 411 | |
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[ebf0128] | 412 | static int oe_char_width(gunichar c, int column) |
---|
| 413 | { |
---|
| 414 | int cw; |
---|
| 415 | |
---|
| 416 | if (c == 9) /* TAB */ |
---|
| 417 | return TABSIZE - column % TABSIZE; |
---|
| 418 | |
---|
| 419 | cw = mk_wcwidth(c); |
---|
| 420 | |
---|
| 421 | if (cw < 0) /* control characters */ |
---|
| 422 | cw = 0; |
---|
| 423 | |
---|
| 424 | return cw; |
---|
| 425 | } |
---|
| 426 | |
---|
[19f765d] | 427 | static int oe_find_display_line(owl_editwin *e, int *x, int index) |
---|
| 428 | { |
---|
| 429 | int width = 0, cw; |
---|
[ebf0128] | 430 | gunichar c; |
---|
[e19eb97] | 431 | const char *p; |
---|
[19f765d] | 432 | |
---|
[77d4402] | 433 | while(1) { |
---|
| 434 | /* note the position of the dot */ |
---|
[2021bea] | 435 | if (x != NULL && index == e->index && width < e->wincols) |
---|
[19f765d] | 436 | *x = width; |
---|
[77d4402] | 437 | |
---|
[19f765d] | 438 | /* get the current character */ |
---|
| 439 | c = g_utf8_get_char(e->buff + index); |
---|
| 440 | |
---|
| 441 | /* figure out how wide it is */ |
---|
[ebf0128] | 442 | cw = oe_char_width(c, width); |
---|
[19f765d] | 443 | |
---|
[77d4402] | 444 | if (width + cw > e->wincols) { |
---|
| 445 | if (x != NULL && *x == width) |
---|
| 446 | *x = -1; |
---|
[19f765d] | 447 | break; |
---|
[77d4402] | 448 | } |
---|
[19f765d] | 449 | width += cw; |
---|
| 450 | |
---|
| 451 | if (c == '\n') { |
---|
[77d4402] | 452 | if (width < e->wincols) |
---|
| 453 | ++index; /* skip the newline */ |
---|
[19f765d] | 454 | break; |
---|
| 455 | } |
---|
| 456 | |
---|
| 457 | /* find the next character */ |
---|
| 458 | p = oe_next_point(e, e->buff + index); |
---|
| 459 | if (p == NULL) { /* we ran off the end */ |
---|
| 460 | if (x != NULL && e->index > index) |
---|
| 461 | *x = width + 1; |
---|
| 462 | break; |
---|
| 463 | } |
---|
| 464 | index = p - e->buff; |
---|
[cedc95c] | 465 | |
---|
[19f765d] | 466 | } |
---|
| 467 | return index; |
---|
| 468 | } |
---|
| 469 | |
---|
[e20d8179] | 470 | static void oe_reframe(owl_editwin *e) { |
---|
[cedc95c] | 471 | oe_excursion x; |
---|
| 472 | int goal = e->winlines / 2; |
---|
| 473 | int index; |
---|
| 474 | int count = 0; |
---|
| 475 | int n, i; |
---|
| 476 | int last; |
---|
| 477 | |
---|
| 478 | oe_save_excursion(e, &x); |
---|
| 479 | /* step back line-by-line through the buffer until we have >= goal lines of |
---|
| 480 | display text */ |
---|
| 481 | e->lock = 0; /* we can (must) tread on the locktext */ |
---|
| 482 | |
---|
| 483 | last = -1; |
---|
| 484 | while (count < goal) { |
---|
| 485 | index = e->index; |
---|
| 486 | owl_editwin_move_to_beginning_of_line(e); |
---|
| 487 | if (last == e->index) |
---|
| 488 | break; |
---|
| 489 | last = e->index; |
---|
| 490 | for (n = 0, i = e->index; i < index; n++) |
---|
| 491 | i = oe_find_display_line(e, NULL, i); |
---|
| 492 | count += n == 0 ? 1 : n; |
---|
| 493 | if (count < goal) |
---|
| 494 | owl_editwin_point_move(e, -1); |
---|
| 495 | } |
---|
| 496 | |
---|
| 497 | e->topindex = e->index; |
---|
[521bc84] | 498 | /* if we overshot, backtrack */ |
---|
| 499 | for (n = 0; n < (count - goal); n++) |
---|
| 500 | e->topindex = oe_find_display_line(e, NULL, e->topindex); |
---|
[cedc95c] | 501 | |
---|
| 502 | oe_restore_excursion(e, &x); |
---|
[7d4fbcd] | 503 | } |
---|
| 504 | |
---|
[3e36085] | 505 | static void oe_addnec(owl_editwin *e, int count) |
---|
| 506 | { |
---|
| 507 | int i; |
---|
| 508 | |
---|
| 509 | for (i = 0; i < count; i++) |
---|
| 510 | waddch(e->curswin, e->echochar); |
---|
| 511 | } |
---|
| 512 | |
---|
| 513 | static void oe_mvaddnec(owl_editwin *e, int y, int x, int count) |
---|
| 514 | { |
---|
| 515 | wmove(e->curswin, y, x); |
---|
| 516 | oe_addnec(e, count); |
---|
| 517 | } |
---|
| 518 | |
---|
[c9334b1] | 519 | /* regenerate the text on the curses window */ |
---|
| 520 | /* if update == 1 then do a doupdate(), otherwise do not */ |
---|
| 521 | void owl_editwin_redisplay(owl_editwin *e, int update) |
---|
| 522 | { |
---|
[19f765d] | 523 | int x = -1, y = -1, t; |
---|
[77d4402] | 524 | int line, index, lineindex, times = 0; |
---|
[7d4fbcd] | 525 | |
---|
[bd1a1ae] | 526 | do { |
---|
[cedc95c] | 527 | werase(e->curswin); |
---|
[e8074ed] | 528 | if (e->topindex == -1 || e->index < e->topindex |
---|
| 529 | || (e->index == e->topindex |
---|
| 530 | && e->topindex > 0 |
---|
| 531 | && e->buff[e->topindex-1] != '\n')) |
---|
[e20d8179] | 532 | oe_reframe(e); |
---|
| 533 | |
---|
[bd1a1ae] | 534 | line = 0; |
---|
| 535 | index = e->topindex; |
---|
| 536 | while(line < e->winlines) { |
---|
| 537 | lineindex = index; |
---|
[19f765d] | 538 | t = -1; |
---|
| 539 | index = oe_find_display_line(e, &t, lineindex); |
---|
| 540 | if (x == -1 && t != -1) |
---|
| 541 | x = t, y = line; |
---|
[3e36085] | 542 | if (index - lineindex) { |
---|
| 543 | if (!e->echochar) |
---|
| 544 | mvwaddnstr(e->curswin, line, 0, |
---|
| 545 | e->buff + lineindex, |
---|
| 546 | index - lineindex); |
---|
| 547 | else { |
---|
| 548 | if(lineindex < e->lock) { |
---|
| 549 | mvwaddnstr(e->curswin, line, 0, |
---|
| 550 | e->buff + lineindex, |
---|
| 551 | MIN(index - lineindex, |
---|
| 552 | e->lock - lineindex)); |
---|
| 553 | if (e->lock < index) |
---|
| 554 | oe_addnec(e, |
---|
| 555 | oe_region_width(e, e->lock, index, |
---|
| 556 | oe_region_width(e, lineindex, e->lock, 0))); |
---|
| 557 | } else |
---|
| 558 | oe_mvaddnec(e, line, 0, oe_region_width(e, line, index, 0)); |
---|
| 559 | } |
---|
| 560 | } |
---|
[bd1a1ae] | 561 | line++; |
---|
[a556caa] | 562 | } |
---|
[19f765d] | 563 | if (x == -1) |
---|
[bd1a1ae] | 564 | e->topindex = -1; /* force a reframe */ |
---|
[77d4402] | 565 | times++; |
---|
| 566 | } while(x == -1 && times < 3); |
---|
[e20d8179] | 567 | |
---|
[19f765d] | 568 | wmove(e->curswin, y, x); |
---|
[ebf0128] | 569 | e->cursorx = x; |
---|
| 570 | |
---|
[7d4fbcd] | 571 | wnoutrefresh(e->curswin); |
---|
[a556caa] | 572 | if (update == 1) |
---|
[7d4fbcd] | 573 | doupdate(); |
---|
| 574 | } |
---|
| 575 | |
---|
[7f0c26f] | 576 | static inline void oe_fixup(int *target, int start, int end, int change) { |
---|
| 577 | if (*target > start) { |
---|
[0d9c90c] | 578 | if (*target <= end) |
---|
[8459609] | 579 | *target = end + change; |
---|
[7f0c26f] | 580 | else |
---|
| 581 | *target += change; |
---|
| 582 | } |
---|
| 583 | } |
---|
| 584 | |
---|
[e19eb97] | 585 | int owl_editwin_replace_region(owl_editwin *e, const char *s) |
---|
[a88f35a] | 586 | { |
---|
| 587 | oe_excursion x; |
---|
| 588 | int ret; |
---|
[5ebc202] | 589 | oe_save_excursion(e, &x); |
---|
[a88f35a] | 590 | |
---|
| 591 | if(e->index > e->mark) { |
---|
| 592 | owl_editwin_exchange_point_and_mark(e); |
---|
| 593 | } |
---|
| 594 | |
---|
| 595 | ret = owl_editwin_replace_internal(e, e->mark - e->index, s); |
---|
| 596 | |
---|
| 597 | oe_restore_excursion(e, &x); |
---|
| 598 | |
---|
| 599 | return ret; |
---|
| 600 | } |
---|
| 601 | |
---|
[19a023f] | 602 | /* replace 'replace' characters at the point with s, returning the change in size */ |
---|
[e19eb97] | 603 | int owl_editwin_replace(owl_editwin *e, int replace, const char *s) |
---|
[ebf0128] | 604 | { |
---|
[19a023f] | 605 | int start, end, i; |
---|
[e19eb97] | 606 | const char *p; |
---|
[e9bb404] | 607 | |
---|
[5b5f3e6] | 608 | if (!g_utf8_validate(s, -1, NULL)) { |
---|
| 609 | owl_function_debugmsg("owl_editwin_insert_string: received non-utf-8 string."); |
---|
[ebf0128] | 610 | return 0; |
---|
[47519e1b] | 611 | } |
---|
| 612 | |
---|
[5b5f3e6] | 613 | start = e->index; |
---|
| 614 | for (i = 0, p = e->buff + start; i < replace && p != NULL; i++) |
---|
| 615 | p = oe_next_point(e, p); |
---|
| 616 | if (p != NULL) |
---|
| 617 | end = p - e->buff; |
---|
| 618 | else |
---|
| 619 | end = e->bufflen; |
---|
| 620 | |
---|
[19a023f] | 621 | return owl_editwin_replace_internal(e, end - start, s); |
---|
| 622 | } |
---|
| 623 | |
---|
[e19eb97] | 624 | static int owl_editwin_replace_internal(owl_editwin *e, int replace, const char *s) |
---|
[19a023f] | 625 | { |
---|
| 626 | int start, end, free, need, size, change; |
---|
| 627 | oe_excursion *x; |
---|
| 628 | |
---|
| 629 | start = e->index; |
---|
| 630 | end = start + replace; |
---|
| 631 | |
---|
[5b5f3e6] | 632 | free = e->allocated - e->bufflen + end - start; |
---|
| 633 | |
---|
| 634 | need = strlen(s) - free; |
---|
| 635 | if (need > 0) { |
---|
| 636 | size = e->allocated + need + INCR - (need % INCR); |
---|
[b644688] | 637 | e->buff = owl_realloc(e->buff, size); |
---|
[5b5f3e6] | 638 | e->allocated = size; |
---|
[47519e1b] | 639 | } |
---|
[e9bb404] | 640 | |
---|
[5b5f3e6] | 641 | memmove(e->buff + start + strlen(s), e->buff + end, e->bufflen + 1 - end); |
---|
| 642 | memcpy(e->buff + start, s, strlen(s)); |
---|
[ebf0128] | 643 | change = start - end + strlen(s); |
---|
| 644 | e->bufflen += change; |
---|
[5b5f3e6] | 645 | e->index += strlen(s); |
---|
[ebf0128] | 646 | |
---|
[7f0c26f] | 647 | /* fix up the mark */ |
---|
[3e36085] | 648 | oe_fixup(&e->mark, start, end, change); |
---|
| 649 | oe_fixup(&e->topindex, start, end, change); |
---|
[ebf0128] | 650 | /* fix up any saved points after the replaced area */ |
---|
[7f0c26f] | 651 | for (x = e->excursions; x != NULL; x = x->next) { |
---|
| 652 | oe_fixup(&x->index, start, end, change); |
---|
[3e36085] | 653 | oe_fixup(&x->mark, start, end, change); |
---|
[7f0c26f] | 654 | } |
---|
[ebf0128] | 655 | |
---|
| 656 | return change; |
---|
[47519e1b] | 657 | } |
---|
| 658 | |
---|
[c9334b1] | 659 | /* linewrap the word just before the cursor. |
---|
| 660 | * returns 0 on success |
---|
| 661 | * returns -1 if we could not wrap. |
---|
| 662 | */ |
---|
[fc2677b] | 663 | static void _owl_editwin_linewrap_word(owl_editwin *e) |
---|
[c9334b1] | 664 | { |
---|
[fc2677b] | 665 | oe_excursion x; |
---|
[84027015] | 666 | gunichar c; |
---|
[7d4fbcd] | 667 | |
---|
[fc2677b] | 668 | oe_save_excursion(e, &x); |
---|
[84027015] | 669 | |
---|
[fc2677b] | 670 | while (owl_editwin_point_move(e, -1)) { |
---|
| 671 | c = owl_editwin_get_char_at_point(e); |
---|
| 672 | if (owl_util_can_break_after(c) || c == '\n') { |
---|
| 673 | if (c != '\n') |
---|
| 674 | owl_editwin_replace(e, c != ' ' ? 0 : 1, "\n"); |
---|
| 675 | break; |
---|
[2d4ff14] | 676 | } |
---|
[7d4fbcd] | 677 | } |
---|
[fc2677b] | 678 | |
---|
| 679 | oe_restore_excursion(e, &x); |
---|
[7d4fbcd] | 680 | } |
---|
| 681 | |
---|
[c9334b1] | 682 | /* delete the character at the current point, following chars |
---|
| 683 | * shift left. |
---|
[e20d8179] | 684 | */ |
---|
[c9334b1] | 685 | void owl_editwin_delete_char(owl_editwin *e) |
---|
| 686 | { |
---|
[5b5f3e6] | 687 | owl_editwin_replace(e, 1, ""); |
---|
[7d4fbcd] | 688 | } |
---|
| 689 | |
---|
[c9334b1] | 690 | /* Swap the character at point with the character at point-1 and |
---|
| 691 | * advance the pointer. If point is at beginning of buffer do |
---|
| 692 | * nothing. If point is after the last character swap point-1 with |
---|
[e20d8179] | 693 | * point-2. (Behaves as observed in tcsh and emacs). |
---|
[c9334b1] | 694 | */ |
---|
| 695 | void owl_editwin_transpose_chars(owl_editwin *e) |
---|
| 696 | { |
---|
[e19eb97] | 697 | const char *middle, *end, *start; |
---|
[65b2173] | 698 | char *tmp; |
---|
[f2e36b5] | 699 | |
---|
[47519e1b] | 700 | if (e->bufflen == 0) return; |
---|
[e20d8179] | 701 | |
---|
[5b5f3e6] | 702 | if (e->index == e->bufflen) |
---|
| 703 | owl_editwin_point_move(e, -1); /* point is after last character */ |
---|
[f2e36b5] | 704 | |
---|
[5b5f3e6] | 705 | if (owl_editwin_at_beginning_of_buffer(e)) |
---|
| 706 | return; /* point is at beginning of buffer, do nothing */ |
---|
[f2e36b5] | 707 | |
---|
[47519e1b] | 708 | /* Transpose two utf-8 unicode glyphs. */ |
---|
[5b5f3e6] | 709 | middle = e->buff + e->index; |
---|
[47519e1b] | 710 | |
---|
[5b5f3e6] | 711 | end = oe_next_point(e, middle); |
---|
| 712 | if (end == NULL) |
---|
[e20d8179] | 713 | return; |
---|
[47519e1b] | 714 | |
---|
[5b5f3e6] | 715 | start = oe_prev_point(e, middle); |
---|
| 716 | if (start == NULL) |
---|
[e20d8179] | 717 | return; |
---|
[47519e1b] | 718 | |
---|
[5b5f3e6] | 719 | tmp = owl_malloc((end - start) + 1); |
---|
| 720 | tmp[(end - start)] = 0; |
---|
| 721 | memcpy(tmp, middle, end - middle); |
---|
| 722 | memcpy(tmp + (end - middle), start, middle - start); |
---|
| 723 | |
---|
| 724 | owl_editwin_point_move(e, -1); |
---|
| 725 | owl_editwin_replace(e, 2, tmp); |
---|
[f2e36b5] | 726 | } |
---|
| 727 | |
---|
[c9334b1] | 728 | /* insert 'string' at the current point, later text is shifted |
---|
| 729 | * right |
---|
| 730 | */ |
---|
[e19eb97] | 731 | void owl_editwin_insert_string(owl_editwin *e, const char *s) |
---|
[c9334b1] | 732 | { |
---|
[5b5f3e6] | 733 | owl_editwin_replace(e, 0, s); |
---|
[7d4fbcd] | 734 | } |
---|
| 735 | |
---|
[a556caa] | 736 | /* We assume index is not set to point to a mid-char */ |
---|
[bab52da] | 737 | static gunichar owl_editwin_get_char_at_point(owl_editwin *e) |
---|
[c9334b1] | 738 | { |
---|
[a556caa] | 739 | return g_utf8_get_char(e->buff + e->index); |
---|
| 740 | } |
---|
[7d4fbcd] | 741 | |
---|
[7f0c26f] | 742 | void owl_editwin_exchange_point_and_mark(owl_editwin *e) { |
---|
| 743 | int tmp; |
---|
| 744 | |
---|
| 745 | if (e->mark != -1) { |
---|
| 746 | tmp = e->mark; |
---|
| 747 | owl_editwin_set_mark(e); |
---|
| 748 | oe_set_index(e, tmp); |
---|
| 749 | } |
---|
| 750 | } |
---|
| 751 | |
---|
[e20d8179] | 752 | int owl_editwin_point_move(owl_editwin *e, int delta) |
---|
[84027015] | 753 | { |
---|
[e19eb97] | 754 | const char *p; |
---|
[19f765d] | 755 | int change, d = 0; |
---|
[a556caa] | 756 | |
---|
| 757 | change = MAX(delta, - delta); |
---|
| 758 | p = e->buff + e->index; |
---|
| 759 | |
---|
| 760 | while (d < change && p != NULL) { |
---|
[e20d8179] | 761 | if (delta > 0) |
---|
| 762 | p = oe_next_point(e, p); |
---|
| 763 | else |
---|
| 764 | p = oe_prev_point(e, p); |
---|
| 765 | if (p != NULL) { |
---|
[521bc84] | 766 | oe_set_index(e, p - e->buff); |
---|
[e20d8179] | 767 | d++; |
---|
[a556caa] | 768 | } |
---|
| 769 | } |
---|
| 770 | |
---|
| 771 | return delta > 0 ? d : -d; |
---|
[84027015] | 772 | } |
---|
| 773 | |
---|
[a556caa] | 774 | int owl_editwin_at_beginning_of_buffer(owl_editwin *e) { |
---|
| 775 | if (e->index == e->lock) |
---|
| 776 | return 1; |
---|
[84027015] | 777 | |
---|
[a556caa] | 778 | return 0; |
---|
| 779 | } |
---|
| 780 | |
---|
| 781 | int owl_at_end_of_buffer(owl_editwin *e) { |
---|
| 782 | if (e->index == e->bufflen) |
---|
| 783 | return 1; |
---|
| 784 | |
---|
| 785 | return 0; |
---|
| 786 | } |
---|
| 787 | |
---|
[e9c6fc8] | 788 | static int owl_editwin_at_beginning_of_line(owl_editwin *e) |
---|
[c9334b1] | 789 | { |
---|
[a0fbdee] | 790 | oe_excursion x; |
---|
[a556caa] | 791 | int ret; |
---|
[47519e1b] | 792 | |
---|
[a556caa] | 793 | if (owl_editwin_at_beginning_of_buffer(e)) |
---|
| 794 | return 1; |
---|
[47519e1b] | 795 | |
---|
[a0fbdee] | 796 | oe_save_excursion(e, &x); |
---|
[a556caa] | 797 | owl_editwin_point_move(e, -1); |
---|
[bab52da] | 798 | ret = (owl_editwin_get_char_at_point(e) == '\n'); |
---|
[a0fbdee] | 799 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 800 | |
---|
| 801 | return ret; |
---|
| 802 | } |
---|
| 803 | |
---|
[e19eb97] | 804 | static int owl_editwin_is_char_in(owl_editwin *e, const char *set) |
---|
[a556caa] | 805 | { |
---|
[e19eb97] | 806 | const char *p; |
---|
[5b5f3e6] | 807 | |
---|
| 808 | for (p = set; *p != 0; p = g_utf8_find_next_char(p, NULL)) |
---|
| 809 | if (owl_editwin_get_char_at_point(e) == g_utf8_get_char(p)) |
---|
[a556caa] | 810 | return 1; |
---|
| 811 | return 0; |
---|
| 812 | } |
---|
| 813 | |
---|
[e19eb97] | 814 | int owl_editwin_move_if_in(owl_editwin *e, int delta, const char *set) |
---|
[a556caa] | 815 | { |
---|
| 816 | int change, distance = 0; |
---|
[e20d8179] | 817 | while (owl_editwin_is_char_in(e, set)) { |
---|
[a556caa] | 818 | change = owl_editwin_point_move(e, delta); |
---|
| 819 | distance += change; |
---|
| 820 | if (change == 0) |
---|
| 821 | break; |
---|
[47519e1b] | 822 | } |
---|
[a556caa] | 823 | return distance; |
---|
| 824 | } |
---|
| 825 | |
---|
[e19eb97] | 826 | int owl_editwin_move_if_not_in(owl_editwin *e, int delta, const char *set) |
---|
[a556caa] | 827 | { |
---|
| 828 | int change, distance = 0; |
---|
[e20d8179] | 829 | while (!owl_editwin_is_char_in(e, set)) { |
---|
[a556caa] | 830 | change = owl_editwin_point_move(e, delta); |
---|
| 831 | distance += change; |
---|
| 832 | if (change == 0) |
---|
| 833 | break; |
---|
[7d4fbcd] | 834 | } |
---|
[a556caa] | 835 | return distance; |
---|
[7d4fbcd] | 836 | } |
---|
| 837 | |
---|
[e20d8179] | 838 | int owl_editwin_move_to_beginning_of_line(owl_editwin *e) |
---|
[47519e1b] | 839 | { |
---|
[a556caa] | 840 | int distance = 0; |
---|
[47519e1b] | 841 | |
---|
[a556caa] | 842 | if (!owl_editwin_at_beginning_of_line(e)) { |
---|
| 843 | /* move off the \n if were at the end of a line */ |
---|
| 844 | distance += owl_editwin_point_move(e, -1); |
---|
| 845 | distance += owl_editwin_move_if_not_in(e, -1, "\n"); |
---|
| 846 | if (distance && !owl_editwin_at_beginning_of_buffer(e)) |
---|
| 847 | distance += owl_editwin_point_move(e, 1); |
---|
[47519e1b] | 848 | } |
---|
[77d4402] | 849 | e->goal_column = 0; /* subtleties */ |
---|
[84027015] | 850 | |
---|
[a556caa] | 851 | return distance; |
---|
| 852 | } |
---|
[e20d8179] | 853 | |
---|
| 854 | int owl_editwin_move_to_end_of_line(owl_editwin *e) |
---|
[a556caa] | 855 | { |
---|
| 856 | return owl_editwin_move_if_not_in(e, 1, "\n"); |
---|
[47519e1b] | 857 | } |
---|
| 858 | |
---|
[e20d8179] | 859 | int owl_editwin_line_move(owl_editwin *e, int delta) |
---|
[c9334b1] | 860 | { |
---|
[d7043b4] | 861 | int goal_column, change, ll, distance; |
---|
| 862 | int count = 0; |
---|
[a556caa] | 863 | |
---|
| 864 | change = MAX(delta, -delta); |
---|
| 865 | |
---|
[d7043b4] | 866 | goal_column = e->goal_column; |
---|
| 867 | distance = owl_editwin_move_to_beginning_of_line(e); |
---|
| 868 | goal_column = goal_column == -1 ? -distance : goal_column; |
---|
[a556caa] | 869 | |
---|
| 870 | while(count < change) { |
---|
| 871 | if (delta > 0) { |
---|
| 872 | distance += owl_editwin_move_if_not_in(e, 1, "\n"); |
---|
| 873 | distance += owl_editwin_point_move(e, 1); |
---|
| 874 | } else { |
---|
| 875 | /* I really want to assert delta < 0 here */ |
---|
| 876 | distance += owl_editwin_point_move(e, -1); /* to the newline on |
---|
| 877 | the previous line */ |
---|
| 878 | distance += owl_editwin_move_to_beginning_of_line(e); |
---|
| 879 | } |
---|
| 880 | count++; |
---|
[7d4fbcd] | 881 | } |
---|
[a556caa] | 882 | |
---|
| 883 | distance += (ll = owl_editwin_move_to_end_of_line(e)); |
---|
| 884 | if (ll > goal_column) |
---|
| 885 | distance += owl_editwin_point_move(e, goal_column - ll); |
---|
| 886 | |
---|
| 887 | e->goal_column = goal_column; |
---|
| 888 | |
---|
| 889 | return distance; |
---|
[7d4fbcd] | 890 | } |
---|
| 891 | |
---|
[c9334b1] | 892 | void owl_editwin_backspace(owl_editwin *e) |
---|
| 893 | { |
---|
[7d4fbcd] | 894 | /* delete the char before the current one |
---|
| 895 | * and shift later chars left |
---|
| 896 | */ |
---|
[a556caa] | 897 | if(owl_editwin_point_move(e, -1)) |
---|
[7d4fbcd] | 898 | owl_editwin_delete_char(e); |
---|
| 899 | } |
---|
| 900 | |
---|
[c9334b1] | 901 | void owl_editwin_key_up(owl_editwin *e) |
---|
| 902 | { |
---|
[a556caa] | 903 | owl_editwin_line_move(e, -1); |
---|
[7d4fbcd] | 904 | } |
---|
| 905 | |
---|
[c9334b1] | 906 | void owl_editwin_key_down(owl_editwin *e) |
---|
| 907 | { |
---|
[a556caa] | 908 | owl_editwin_line_move(e, 1); |
---|
[7d4fbcd] | 909 | } |
---|
| 910 | |
---|
[c9334b1] | 911 | void owl_editwin_key_left(owl_editwin *e) |
---|
| 912 | { |
---|
[a556caa] | 913 | owl_editwin_point_move(e, -1); |
---|
[7d4fbcd] | 914 | } |
---|
| 915 | |
---|
[c9334b1] | 916 | void owl_editwin_key_right(owl_editwin *e) |
---|
| 917 | { |
---|
[a556caa] | 918 | owl_editwin_point_move(e, 1); |
---|
[7d4fbcd] | 919 | } |
---|
| 920 | |
---|
[5b5f3e6] | 921 | int owl_editwin_forward_word(owl_editwin *e) |
---|
[c9334b1] | 922 | { |
---|
[5b5f3e6] | 923 | int distance; |
---|
[7d4fbcd] | 924 | /* if we're starting on a space, find the first non-space */ |
---|
[5b5f3e6] | 925 | distance = owl_editwin_move_if_in(e, 1, WHITESPACE); |
---|
[7d4fbcd] | 926 | |
---|
[a556caa] | 927 | /* now find the end of this word */ |
---|
[5b5f3e6] | 928 | distance += owl_editwin_move_if_not_in(e, 1, WHITESPACE); |
---|
| 929 | |
---|
| 930 | return distance; |
---|
| 931 | } |
---|
| 932 | |
---|
| 933 | void owl_editwin_move_to_nextword(owl_editwin *e) |
---|
| 934 | { |
---|
| 935 | owl_editwin_forward_word(e); |
---|
[7d4fbcd] | 936 | } |
---|
| 937 | |
---|
[c9334b1] | 938 | /* go backwards to the last non-space character |
---|
| 939 | */ |
---|
[5b5f3e6] | 940 | int owl_editwin_backward_word(owl_editwin *e) |
---|
[c9334b1] | 941 | { |
---|
[a0fbdee] | 942 | oe_excursion x; |
---|
[5b5f3e6] | 943 | int distance = 0; |
---|
| 944 | int further = 0; |
---|
[a556caa] | 945 | int beginning; |
---|
| 946 | /* if in middle of word, beginning of word */ |
---|
| 947 | |
---|
| 948 | /* if at beginning of a word, find beginning of previous word */ |
---|
| 949 | |
---|
[e20d8179] | 950 | if (owl_editwin_is_char_in(e, WHITESPACE)) { |
---|
[a556caa] | 951 | /* if in whitespace past end of word, find a word , the find the beginning*/ |
---|
[5b5f3e6] | 952 | distance += owl_editwin_move_if_in(e, -1, WHITESPACE); /* leaves us on the last |
---|
| 953 | character of the word */ |
---|
[a0fbdee] | 954 | oe_save_excursion(e, &x); |
---|
[a556caa] | 955 | /* are we at the beginning of a word? */ |
---|
| 956 | owl_editwin_point_move(e, -1); |
---|
[e20d8179] | 957 | beginning = owl_editwin_is_char_in(e, WHITESPACE); |
---|
[a0fbdee] | 958 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 959 | if (beginning) |
---|
[5b5f3e6] | 960 | return distance; |
---|
[a556caa] | 961 | } else { |
---|
| 962 | /* in the middle of the word; */ |
---|
[a0fbdee] | 963 | oe_save_excursion(e, &x); |
---|
[5b5f3e6] | 964 | further += owl_editwin_point_move(e, -1); |
---|
[e20d8179] | 965 | if (owl_editwin_is_char_in(e, WHITESPACE)) { /* we were at the beginning */ |
---|
[5b5f3e6] | 966 | distance += owl_editwin_backward_word(e); /* previous case */ |
---|
[8321cb7] | 967 | oe_release_excursion(e, &x); |
---|
[5b5f3e6] | 968 | return distance + further; |
---|
[a556caa] | 969 | } else { |
---|
[a0fbdee] | 970 | oe_restore_excursion(e, &x); |
---|
[7d4fbcd] | 971 | } |
---|
| 972 | } |
---|
[5b5f3e6] | 973 | distance += owl_editwin_move_if_not_in(e, -1, WHITESPACE); |
---|
[a556caa] | 974 | /* will go past */ |
---|
| 975 | if (e->index > e->lock) |
---|
[5b5f3e6] | 976 | distance += owl_editwin_point_move(e, 1); |
---|
| 977 | return distance; |
---|
| 978 | } |
---|
| 979 | |
---|
| 980 | void owl_editwin_move_to_previousword(owl_editwin *e) |
---|
| 981 | { |
---|
| 982 | owl_editwin_backward_word(e); |
---|
[7d4fbcd] | 983 | } |
---|
| 984 | |
---|
[c9334b1] | 985 | void owl_editwin_delete_nextword(owl_editwin *e) |
---|
| 986 | { |
---|
[a0fbdee] | 987 | oe_excursion x; |
---|
[a556caa] | 988 | |
---|
[a0fbdee] | 989 | oe_save_excursion(e, &x); |
---|
[a60edf2] | 990 | oe_set_mark(e, e->index); |
---|
| 991 | owl_editwin_forward_word(e); |
---|
| 992 | owl_editwin_kill_region(e); |
---|
| 993 | oe_restore_mark_only(e, &x); |
---|
[7d4fbcd] | 994 | } |
---|
| 995 | |
---|
[c9334b1] | 996 | void owl_editwin_delete_previousword(owl_editwin *e) |
---|
| 997 | { |
---|
[a60edf2] | 998 | oe_excursion x; |
---|
[b68f9cd] | 999 | |
---|
[a60edf2] | 1000 | oe_save_excursion(e, &x); |
---|
| 1001 | oe_set_mark(e, e->index); |
---|
| 1002 | owl_editwin_backward_word(e); |
---|
| 1003 | owl_editwin_kill_region(e); |
---|
| 1004 | oe_restore_mark_only(e, &x); |
---|
[b68f9cd] | 1005 | } |
---|
| 1006 | |
---|
[a556caa] | 1007 | void owl_editwin_move_to_line_end(owl_editwin *e) |
---|
[c9334b1] | 1008 | { |
---|
[a556caa] | 1009 | owl_editwin_move_to_end_of_line(e); |
---|
[7d4fbcd] | 1010 | } |
---|
| 1011 | |
---|
[a556caa] | 1012 | void owl_editwin_delete_to_endofline(owl_editwin *e) |
---|
[c9334b1] | 1013 | { |
---|
[a0fbdee] | 1014 | oe_excursion x; |
---|
[5b5f3e6] | 1015 | int distance; |
---|
[a556caa] | 1016 | |
---|
[a0fbdee] | 1017 | oe_save_excursion(e, &x); |
---|
[a60edf2] | 1018 | owl_editwin_set_mark(e); |
---|
[5b5f3e6] | 1019 | distance = owl_editwin_move_to_end_of_line(e); |
---|
[a60edf2] | 1020 | if (distance) |
---|
| 1021 | owl_editwin_kill_region(e); |
---|
| 1022 | else |
---|
| 1023 | owl_editwin_replace(e, 1, ""); |
---|
[a0fbdee] | 1024 | oe_restore_excursion(e, &x); |
---|
[a60edf2] | 1025 | } |
---|
| 1026 | |
---|
| 1027 | void owl_editwin_yank(owl_editwin *e) |
---|
| 1028 | { |
---|
| 1029 | if (e->killbuf != NULL) |
---|
| 1030 | owl_editwin_replace(e, 0, e->killbuf); |
---|
| 1031 | } |
---|
| 1032 | |
---|
[e19eb97] | 1033 | static const char *oe_copy_buf(owl_editwin *e, const char *buf, int len) |
---|
[a60edf2] | 1034 | { |
---|
| 1035 | char *p; |
---|
| 1036 | |
---|
| 1037 | p = owl_malloc(len + 1); |
---|
| 1038 | |
---|
| 1039 | if (p != NULL) { |
---|
| 1040 | owl_free(e->killbuf); |
---|
| 1041 | e->killbuf = p; |
---|
| 1042 | memcpy(e->killbuf, buf, len); |
---|
| 1043 | e->killbuf[len] = 0; |
---|
| 1044 | } |
---|
| 1045 | |
---|
| 1046 | return p; |
---|
| 1047 | } |
---|
| 1048 | |
---|
| 1049 | static int oe_copy_region(owl_editwin *e) |
---|
| 1050 | { |
---|
[e19eb97] | 1051 | const char *p; |
---|
[a60edf2] | 1052 | int start, end; |
---|
| 1053 | |
---|
| 1054 | if (e->mark == -1) |
---|
| 1055 | return 0; |
---|
| 1056 | |
---|
| 1057 | start = MIN(e->index, e->mark); |
---|
| 1058 | end = MAX(e->index, e->mark); |
---|
| 1059 | |
---|
| 1060 | p = oe_copy_buf(e, e->buff + start, end - start); |
---|
| 1061 | if (p != NULL) |
---|
| 1062 | return end - start; |
---|
| 1063 | return 0; |
---|
| 1064 | } |
---|
| 1065 | |
---|
| 1066 | void owl_editwin_copy_region_as_kill(owl_editwin *e) |
---|
| 1067 | { |
---|
| 1068 | oe_copy_region(e); |
---|
| 1069 | } |
---|
| 1070 | |
---|
| 1071 | void owl_editwin_kill_region(owl_editwin *e) |
---|
| 1072 | { |
---|
| 1073 | if (e->index > e->mark) |
---|
| 1074 | owl_editwin_exchange_point_and_mark(e); |
---|
| 1075 | |
---|
[2184001] | 1076 | owl_editwin_replace_internal(e, oe_copy_region(e), ""); |
---|
[7d4fbcd] | 1077 | } |
---|
| 1078 | |
---|
[c9334b1] | 1079 | void owl_editwin_move_to_line_start(owl_editwin *e) |
---|
| 1080 | { |
---|
[a556caa] | 1081 | owl_editwin_move_to_beginning_of_line(e); |
---|
[7d4fbcd] | 1082 | } |
---|
| 1083 | |
---|
[c9334b1] | 1084 | void owl_editwin_move_to_end(owl_editwin *e) |
---|
| 1085 | { |
---|
[521bc84] | 1086 | oe_set_index(e, e->bufflen); |
---|
[7d4fbcd] | 1087 | } |
---|
| 1088 | |
---|
[c9334b1] | 1089 | void owl_editwin_move_to_top(owl_editwin *e) |
---|
| 1090 | { |
---|
[521bc84] | 1091 | oe_set_index(e, e->lock); |
---|
[7d4fbcd] | 1092 | } |
---|
| 1093 | |
---|
[2fc8397] | 1094 | void owl_editwin_backward_paragraph(owl_editwin *e) |
---|
| 1095 | { |
---|
| 1096 | owl_editwin_point_move(e, -1); |
---|
| 1097 | for (; e->index >= e->lock; owl_editwin_point_move(e, -1)) { |
---|
| 1098 | if (e->index <= e->lock || |
---|
| 1099 | ((e->buff[e->index] == '\n') && (e->buff[e->index - 1]=='\n'))) |
---|
| 1100 | break; |
---|
| 1101 | } |
---|
| 1102 | } |
---|
| 1103 | |
---|
| 1104 | void owl_editwin_forward_paragraph(owl_editwin *e) |
---|
| 1105 | { |
---|
| 1106 | owl_editwin_point_move(e, 1); |
---|
| 1107 | /* scan forward to the start of the next paragraph */ |
---|
| 1108 | for(; e->index < e->bufflen; owl_editwin_point_move(e, 1)) { |
---|
| 1109 | if (e->buff[e->index -1] == '\n' && e->buff[e->index] == '\n') |
---|
| 1110 | break; |
---|
| 1111 | } |
---|
| 1112 | } |
---|
| 1113 | |
---|
[d41294a] | 1114 | int owl_editwin_current_column(owl_editwin *e) |
---|
[c9334b1] | 1115 | { |
---|
[a0fbdee] | 1116 | oe_excursion x; |
---|
[fc2677b] | 1117 | int lineindex; |
---|
[7d4fbcd] | 1118 | |
---|
[a0fbdee] | 1119 | oe_save_excursion(e, &x); |
---|
[fc2677b] | 1120 | owl_editwin_move_to_beginning_of_line(e); |
---|
| 1121 | lineindex = e->index; |
---|
| 1122 | oe_restore_excursion(e, &x); |
---|
| 1123 | return oe_region_width(e, lineindex, e->index, 0); |
---|
| 1124 | } |
---|
[a556caa] | 1125 | |
---|
[fc2677b] | 1126 | void owl_editwin_fill_paragraph(owl_editwin *e) |
---|
| 1127 | { |
---|
| 1128 | oe_excursion x; |
---|
| 1129 | gunichar ch; |
---|
| 1130 | int sentence; |
---|
[7d4fbcd] | 1131 | |
---|
[fc2677b] | 1132 | oe_save_excursion(e, &x); |
---|
[7d4fbcd] | 1133 | |
---|
[fc2677b] | 1134 | /* Mark the end of the paragraph */ |
---|
| 1135 | owl_editwin_forward_paragraph(e); |
---|
| 1136 | /* Skip the trailing newline */ |
---|
| 1137 | owl_editwin_point_move(e, -1); |
---|
| 1138 | owl_editwin_set_mark(e); |
---|
[7d4fbcd] | 1139 | |
---|
[fc2677b] | 1140 | owl_editwin_backward_paragraph(e); |
---|
[7d4fbcd] | 1141 | |
---|
[fc2677b] | 1142 | /* Don't mess with the leading newline */ |
---|
| 1143 | if (owl_editwin_get_char_at_point(e) == '\n') |
---|
| 1144 | owl_editwin_point_move(e, 1); |
---|
[7d4fbcd] | 1145 | |
---|
[fc2677b] | 1146 | /* |
---|
| 1147 | * First pass: Scan forward replacing all series of spaces with ' ' |
---|
| 1148 | * (or nothing after CJK ideograms) |
---|
| 1149 | */ |
---|
| 1150 | sentence = 0; |
---|
| 1151 | for(;e->index < e->mark; owl_editwin_point_move(e, 1)) { |
---|
[50e671c] | 1152 | /* bail if we hit a trailing dot on the buffer */ |
---|
[fc2677b] | 1153 | if (strcmp(e->buff + e->index, "\n.") == 0) { |
---|
| 1154 | owl_editwin_set_mark(e); |
---|
[50e671c] | 1155 | break; |
---|
[7d4fbcd] | 1156 | } |
---|
| 1157 | |
---|
[fc2677b] | 1158 | ch = owl_editwin_get_char_at_point(e); |
---|
[b2c1bd4] | 1159 | |
---|
[fc2677b] | 1160 | if (owl_util_can_break_after(ch) || ch == '\n') { |
---|
| 1161 | if (g_unichar_isspace(ch)) { |
---|
| 1162 | owl_editwin_replace(e, 1, " "); |
---|
| 1163 | } |
---|
| 1164 | |
---|
[f9d257b] | 1165 | if (sentence && g_unichar_isspace(owl_editwin_get_char_at_point(e)) |
---|
| 1166 | && e->index < e->mark) |
---|
[fc2677b] | 1167 | owl_editwin_point_move(e, 1); |
---|
| 1168 | |
---|
| 1169 | while(g_unichar_isspace(owl_editwin_get_char_at_point(e)) |
---|
| 1170 | && e->index < e->mark) { |
---|
| 1171 | owl_editwin_delete_char(e); |
---|
[7d4fbcd] | 1172 | } |
---|
| 1173 | } |
---|
[fc2677b] | 1174 | |
---|
| 1175 | if(ch == '.' || ch == '!' || ch == '?') |
---|
| 1176 | sentence = 1; |
---|
| 1177 | else |
---|
| 1178 | sentence = 0; |
---|
| 1179 | } |
---|
| 1180 | |
---|
| 1181 | owl_editwin_backward_paragraph(e); |
---|
| 1182 | |
---|
| 1183 | /* Now go through inserting newlines as needed */ |
---|
| 1184 | while(e->index < e->mark) { |
---|
| 1185 | /* if we've travelled too far, linewrap */ |
---|
[d41294a] | 1186 | if (owl_editwin_current_column(e) >= e->fillcol) |
---|
[fc2677b] | 1187 | _owl_editwin_linewrap_word(e); |
---|
| 1188 | owl_editwin_point_move(e, 1); |
---|
[7d4fbcd] | 1189 | } |
---|
| 1190 | |
---|
[a0fbdee] | 1191 | oe_restore_excursion(e, &x); |
---|
[7d4fbcd] | 1192 | } |
---|
| 1193 | |
---|
[cf83b7a] | 1194 | /* returns true if only whitespace remains */ |
---|
[c9334b1] | 1195 | int owl_editwin_is_at_end(owl_editwin *e) |
---|
| 1196 | { |
---|
[a556caa] | 1197 | return (only_whitespace(e->buff + e->index)); |
---|
[217a43e] | 1198 | } |
---|
| 1199 | |
---|
[bab52da] | 1200 | static int owl_editwin_check_dotsend(owl_editwin *e) |
---|
[c9334b1] | 1201 | { |
---|
[dc7884d] | 1202 | int zdot = 0; |
---|
[72ab15f] | 1203 | oe_excursion x; |
---|
[7d4fbcd] | 1204 | |
---|
| 1205 | if (!e->dotsend) return(0); |
---|
[4ccd92c] | 1206 | if (!owl_editwin_is_at_end(e)) return (0); |
---|
[47519e1b] | 1207 | |
---|
[72ab15f] | 1208 | oe_save_excursion(e, &x); |
---|
| 1209 | |
---|
| 1210 | owl_editwin_point_move(e, -3); |
---|
| 1211 | |
---|
[4ccd92c] | 1212 | if(strncmp(e->buff + e->index, "\n.\n", 3) == 0) { |
---|
[dc7884d] | 1213 | owl_editwin_point_move(e, 1); |
---|
| 1214 | zdot = 1; |
---|
[0509efc] | 1215 | } else if(e->index == e->lock && |
---|
[4ccd92c] | 1216 | strncmp(e->buff + e->index, ".\n", 2) == 0) { |
---|
[0509efc] | 1217 | zdot = 1; |
---|
| 1218 | } |
---|
| 1219 | |
---|
| 1220 | if(zdot) { |
---|
[4ccd92c] | 1221 | owl_editwin_set_mark(e); |
---|
| 1222 | owl_editwin_move_to_end(e); |
---|
| 1223 | owl_editwin_replace_region(e, ""); |
---|
[dc7884d] | 1224 | } |
---|
[72ab15f] | 1225 | |
---|
| 1226 | oe_restore_excursion(e, &x); |
---|
| 1227 | |
---|
| 1228 | return zdot; |
---|
[7d4fbcd] | 1229 | } |
---|
| 1230 | |
---|
[fac5463] | 1231 | void owl_editwin_post_process_char(owl_editwin *e, owl_input j) |
---|
[c9334b1] | 1232 | { |
---|
[a556caa] | 1233 | /* XXX force a redisplay? */ |
---|
[fac5463] | 1234 | if ((j.ch==13 || j.ch==10) && owl_editwin_check_dotsend(e)) { |
---|
[435d6b2] | 1235 | owl_command_edit_done(e); |
---|
[7d4fbcd] | 1236 | return; |
---|
| 1237 | } |
---|
[e20d8179] | 1238 | owl_editwin_redisplay(e, 0); |
---|
[7d4fbcd] | 1239 | } |
---|
| 1240 | |
---|
[3e36085] | 1241 | static int oe_region_width(owl_editwin *e, int start, int end, int offset) |
---|
[16cfd12a] | 1242 | { |
---|
[e19eb97] | 1243 | const char *p; |
---|
[3e36085] | 1244 | int width = offset; |
---|
| 1245 | |
---|
[16cfd12a] | 1246 | for(p = e->buff + start; |
---|
| 1247 | p < e->buff + end; |
---|
| 1248 | p = g_utf8_find_next_char(p, NULL)) |
---|
| 1249 | width += oe_char_width(g_utf8_get_char(p), width); |
---|
| 1250 | |
---|
[3e36085] | 1251 | return width - offset; |
---|
[16cfd12a] | 1252 | } |
---|
| 1253 | |
---|
[ebf0128] | 1254 | static void oe_insert_char(owl_editwin *e, gunichar c) |
---|
[fac5463] | 1255 | { |
---|
[16cfd12a] | 1256 | oe_excursion x; |
---|
[5b5f3e6] | 1257 | char tmp[7]; |
---|
[16cfd12a] | 1258 | int replaced = -1; |
---|
[5b5f3e6] | 1259 | |
---|
[ebf0128] | 1260 | if (c == '\r') /* translate CRs to NLs */ |
---|
| 1261 | c = '\n'; |
---|
| 1262 | |
---|
[16cfd12a] | 1263 | if (!g_unichar_iscntrl(c) || c == '\n' || c== '\t' ) { |
---|
[ebf0128] | 1264 | if (c == '\n' && e->style == OWL_EDITWIN_STYLE_ONELINE) { |
---|
| 1265 | return; |
---|
| 1266 | } |
---|
| 1267 | |
---|
[16cfd12a] | 1268 | if (e->cursorx != -1 && e->cursorx + oe_char_width(c, e->cursorx) > e->wrapcol) { |
---|
| 1269 | /* XXX this is actually wrong: |
---|
| 1270 | * + If the line has been been wrapped, we can be past the wrap column but |
---|
| 1271 | * e->cursorx be much smaller. |
---|
| 1272 | * + If the user went back and inserted a bunch of stuff in the middle of |
---|
| 1273 | * the line, there may be more than one word past the wrap column. |
---|
| 1274 | */ |
---|
| 1275 | oe_save_excursion(e, &x); |
---|
| 1276 | |
---|
| 1277 | if (c == ' ' || c == '\t') { |
---|
| 1278 | owl_editwin_point_move(e, -1); |
---|
| 1279 | replaced = -owl_editwin_move_if_in(e, -1, " \t"); |
---|
| 1280 | if (!replaced) { |
---|
| 1281 | c = '\n'; |
---|
| 1282 | replaced = -1; |
---|
| 1283 | } |
---|
| 1284 | } else { |
---|
| 1285 | while(!owl_editwin_at_beginning_of_line(e)) { |
---|
| 1286 | owl_editwin_point_move(e, -1); |
---|
| 1287 | if (owl_util_can_break_after(owl_editwin_get_char_at_point(e))) { |
---|
| 1288 | replaced = -owl_editwin_move_if_in(e, -1, " \t"); |
---|
| 1289 | break; |
---|
| 1290 | } |
---|
| 1291 | } |
---|
| 1292 | if (owl_editwin_at_beginning_of_line(e)) |
---|
| 1293 | replaced = -1; |
---|
| 1294 | } |
---|
| 1295 | if (replaced && !owl_editwin_at_beginning_of_line(e)) |
---|
| 1296 | owl_editwin_point_move(e, 1); |
---|
| 1297 | if (replaced >= 0) { |
---|
| 1298 | owl_editwin_replace(e, replaced, "\n"); |
---|
| 1299 | } |
---|
| 1300 | oe_restore_excursion(e, &x); |
---|
| 1301 | } |
---|
| 1302 | |
---|
| 1303 | if (replaced >= 0 && (c == ' ' || c == '\t')) |
---|
| 1304 | return; /* our work here is done */ |
---|
| 1305 | |
---|
[6c171f1] | 1306 | tmp[g_unichar_to_utf8(c, tmp)] = '\0'; |
---|
[ebf0128] | 1307 | owl_editwin_replace(e, 0, tmp); |
---|
| 1308 | } |
---|
| 1309 | } |
---|
| 1310 | |
---|
| 1311 | void owl_editwin_process_char(owl_editwin *e, owl_input j) |
---|
| 1312 | { |
---|
[5b5f3e6] | 1313 | if (j.ch == ERR) |
---|
| 1314 | return; |
---|
[fac5463] | 1315 | /* Ignore ncurses control characters. */ |
---|
[e20d8179] | 1316 | if (j.ch < 0x100) { |
---|
[ebf0128] | 1317 | oe_insert_char(e, j.uch); |
---|
[fac5463] | 1318 | } |
---|
| 1319 | } |
---|
| 1320 | |
---|
[e19eb97] | 1321 | const char *owl_editwin_get_text(owl_editwin *e) |
---|
[c9334b1] | 1322 | { |
---|
[7d4fbcd] | 1323 | return(e->buff+e->lock); |
---|
| 1324 | } |
---|
| 1325 | |
---|
[d41294a] | 1326 | char *owl_editwin_get_region(owl_editwin *e) |
---|
| 1327 | { |
---|
| 1328 | int start, end; |
---|
| 1329 | start = e->index; |
---|
| 1330 | end = e->mark; |
---|
| 1331 | if(start > end) { |
---|
| 1332 | int tmp = end; |
---|
| 1333 | end = start; |
---|
| 1334 | start = tmp; |
---|
| 1335 | } |
---|
| 1336 | |
---|
| 1337 | return oe_chunk(e, start, end); |
---|
| 1338 | } |
---|
| 1339 | |
---|
[77f605d] | 1340 | int owl_editwin_get_echochar(owl_editwin *e) |
---|
| 1341 | { |
---|
[a556caa] | 1342 | return e->echochar; |
---|
| 1343 | } |
---|
[77f605d] | 1344 | |
---|
| 1345 | static char *oe_chunk(owl_editwin *e, int start, int end) |
---|
| 1346 | { |
---|
| 1347 | char *p; |
---|
| 1348 | |
---|
| 1349 | p = owl_malloc(end - start + 1); |
---|
| 1350 | memcpy(p, e->buff + start, end - start); |
---|
| 1351 | p[end - start] = 0; |
---|
| 1352 | |
---|
| 1353 | return p; |
---|
| 1354 | } |
---|
| 1355 | |
---|
[d41294a] | 1356 | /* |
---|
| 1357 | * The only guarantee made about these values is that comparisons |
---|
| 1358 | * between them, as well as comparison between multiple calls to these |
---|
| 1359 | * functions without modifying the editwin in-between, are meaningful. |
---|
| 1360 | */ |
---|
| 1361 | |
---|
| 1362 | int owl_editwin_get_point(owl_editwin *e) |
---|
| 1363 | { |
---|
| 1364 | return e->index; |
---|
| 1365 | } |
---|
| 1366 | |
---|
| 1367 | int owl_editwin_get_mark(owl_editwin *e) |
---|
| 1368 | { |
---|
| 1369 | return e->mark; |
---|
| 1370 | } |
---|
| 1371 | |
---|
[2f21a41] | 1372 | |
---|
| 1373 | /* |
---|
| 1374 | * Local Variables: |
---|
| 1375 | * mode:C |
---|
| 1376 | * c-basic-offset:2 |
---|
| 1377 | * End: |
---|
| 1378 | */ |
---|