[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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[e19eb97] | 73 | static int oe_count_glyphs(const char *s) |
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[5b5f3e6] | 74 | { |
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| 75 | int count = 0; |
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[e19eb97] | 76 | const char *p; |
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[5b5f3e6] | 77 | |
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| 78 | for(p = s; *p != 0; p = g_utf8_find_next_char(p, NULL)) |
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| 79 | if (!g_unichar_ismark(g_utf8_get_char(p))) |
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| 80 | count++; |
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| 81 | |
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| 82 | return count; |
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| 83 | } |
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| 84 | |
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[bab52da] | 85 | static inline void oe_set_index(owl_editwin *e, int index) |
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| 86 | { |
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[ebf0128] | 87 | if (index != e->index) { |
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| 88 | e->goal_column = -1; |
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| 89 | e->cursorx = -1; |
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| 90 | } |
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[521bc84] | 91 | e->index = index; |
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| 92 | } |
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| 93 | |
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[7f0c26f] | 94 | static inline void oe_set_mark(owl_editwin *e, int mark) |
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| 95 | { |
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| 96 | e->mark = mark; |
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| 97 | } |
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| 98 | |
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| 99 | void owl_editwin_set_mark(owl_editwin *e) |
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| 100 | { |
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| 101 | oe_set_mark(e, e->index); |
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| 102 | /* owl_function_makemsg("Mark set."); */ |
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| 103 | } |
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| 104 | |
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[cf83b7a] | 105 | /* initialize the editwin e. |
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| 106 | * 'win' is an already initialzed curses window that will be used by editwin |
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| 107 | */ |
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[c9334b1] | 108 | void owl_editwin_init(owl_editwin *e, WINDOW *win, int winlines, int wincols, int style, owl_history *hist) |
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| 109 | { |
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[e20d8179] | 110 | e->buff=owl_malloc(INCR); |
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[7d4fbcd] | 111 | e->buff[0]='\0'; |
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| 112 | e->bufflen=0; |
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[10b866d] | 113 | e->hist=hist; |
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[7d4fbcd] | 114 | e->allocated=INCR; |
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[521bc84] | 115 | oe_set_index(e, 0); |
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[7f0c26f] | 116 | oe_set_mark(e, -1); |
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[a60edf2] | 117 | if (e->killbuf != NULL) |
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[27f6487] | 118 | owl_free(e->killbuf); |
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[a60edf2] | 119 | e->killbuf = NULL; |
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[a556caa] | 120 | e->goal_column = -1; |
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[ebf0128] | 121 | e->cursorx = -1; |
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| 122 | e->topindex = 0; |
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| 123 | e->excursions = NULL; |
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| 124 | owl_editwin_set_curswin(e, win, winlines, wincols); |
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[7d4fbcd] | 125 | e->style=style; |
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| 126 | if ((style!=OWL_EDITWIN_STYLE_MULTILINE) && |
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| 127 | (style!=OWL_EDITWIN_STYLE_ONELINE)) { |
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| 128 | e->style=OWL_EDITWIN_STYLE_MULTILINE; |
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| 129 | } |
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| 130 | e->lock=0; |
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| 131 | e->dotsend=0; |
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[c9334b1] | 132 | e->echochar='\0'; |
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[e74c01c] | 133 | |
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[af1920fd] | 134 | /* We get initialized multiple times, but we need to hold on to |
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| 135 | the callbacks, so we can't NULL them here. */ |
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[e74c01c] | 136 | /* |
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| 137 | e->command = NULL; |
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| 138 | e->callback = NULL; |
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| 139 | e->cbdata = NULL; |
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| 140 | */ |
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[7d4fbcd] | 141 | if (win) werase(win); |
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| 142 | } |
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| 143 | |
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[c9334b1] | 144 | void owl_editwin_set_curswin(owl_editwin *e, WINDOW *w, int winlines, int wincols) |
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| 145 | { |
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[7d4fbcd] | 146 | e->curswin=w; |
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| 147 | e->winlines=winlines; |
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| 148 | e->wincols=wincols; |
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[9a6cc40] | 149 | e->fillcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxfillcols(&g)); |
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| 150 | e->wrapcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxwrapcols(&g)); |
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[7d4fbcd] | 151 | } |
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| 152 | |
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[c9334b1] | 153 | /* echo the character 'ch' for each normal character keystroke, |
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| 154 | * excepting locktext. This is useful for entering passwords etc. If |
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| 155 | * ch=='\0' characters are echo'd normally |
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| 156 | */ |
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| 157 | void owl_editwin_set_echochar(owl_editwin *e, int ch) |
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| 158 | { |
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| 159 | e->echochar=ch; |
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| 160 | } |
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| 161 | |
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| 162 | WINDOW *owl_editwin_get_curswin(owl_editwin *e) |
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| 163 | { |
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[060b3b4] | 164 | return(e->curswin); |
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[7d4fbcd] | 165 | } |
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| 166 | |
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[c9334b1] | 167 | owl_history *owl_editwin_get_history(owl_editwin *e) |
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| 168 | { |
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[060b3b4] | 169 | return(e->hist); |
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[10b866d] | 170 | } |
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| 171 | |
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[c9334b1] | 172 | void owl_editwin_set_dotsend(owl_editwin *e) |
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| 173 | { |
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[7d4fbcd] | 174 | e->dotsend=1; |
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| 175 | } |
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| 176 | |
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[e19eb97] | 177 | void owl_editwin_set_command(owl_editwin *e, const char *command) |
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[bab52da] | 178 | { |
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[e74c01c] | 179 | if(e->command) owl_free(e->command); |
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| 180 | e->command = owl_strdup(command); |
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| 181 | } |
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| 182 | |
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[e19eb97] | 183 | const char *owl_editwin_get_command(owl_editwin *e) |
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[bab52da] | 184 | { |
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[e74c01c] | 185 | if(e->command) return e->command; |
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| 186 | return ""; |
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| 187 | } |
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| 188 | |
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[bab52da] | 189 | void owl_editwin_set_callback(owl_editwin *e, void (*cb)(owl_editwin*)) |
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| 190 | { |
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[e74c01c] | 191 | e->callback = cb; |
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| 192 | } |
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| 193 | |
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[bab52da] | 194 | void (*owl_editwin_get_callback(owl_editwin *e))(owl_editwin*) |
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| 195 | { |
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[e74c01c] | 196 | return e->callback; |
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| 197 | } |
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| 198 | |
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[bab52da] | 199 | void owl_editwin_set_cbdata(owl_editwin *e, void *data) |
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| 200 | { |
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[e74c01c] | 201 | e->cbdata = data; |
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| 202 | } |
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| 203 | |
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[a556caa] | 204 | void *owl_editwin_get_cbdata(owl_editwin *e) { |
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[e74c01c] | 205 | return e->cbdata; |
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| 206 | } |
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| 207 | |
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| 208 | void owl_editwin_do_callback(owl_editwin *e) { |
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| 209 | void (*cb)(owl_editwin*); |
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| 210 | cb=owl_editwin_get_callback(e); |
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| 211 | if(!cb) { |
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| 212 | owl_function_error("Internal error: No editwin callback!"); |
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| 213 | } else { |
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[af1920fd] | 214 | /* owl_function_error("text: |%s|", owl_editwin_get_text(e)); */ |
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[e74c01c] | 215 | cb(e); |
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| 216 | } |
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| 217 | } |
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| 218 | |
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[bab52da] | 219 | static int owl_editwin_limit_maxcols(int v, int maxv) |
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[c9334b1] | 220 | { |
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[ebf0128] | 221 | /* maxv > 5 ? MAX(v, vax) : v */ |
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[d36f2cb] | 222 | if (maxv > 5 && v > maxv) { |
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[060b3b4] | 223 | return(maxv); |
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[d36f2cb] | 224 | } else { |
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[060b3b4] | 225 | return(v); |
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[d36f2cb] | 226 | } |
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| 227 | } |
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| 228 | |
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[c9334b1] | 229 | /* set text to be 'locked in' at the beginning of the buffer, any |
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| 230 | * previous text (including locked text) will be overwritten |
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| 231 | */ |
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[e19eb97] | 232 | void owl_editwin_set_locktext(owl_editwin *e, const char *text) |
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[c9334b1] | 233 | { |
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[521bc84] | 234 | oe_set_index(e, 0); |
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[5b5f3e6] | 235 | e->lock = 0; |
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| 236 | owl_editwin_replace(e, e->bufflen, text); |
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| 237 | e->buff[e->bufflen] = 0; |
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| 238 | e->lock=e->bufflen; |
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[521bc84] | 239 | oe_set_index(e, e->lock); |
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[7d4fbcd] | 240 | owl_editwin_redisplay(e, 0); |
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| 241 | } |
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| 242 | |
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[c9334b1] | 243 | int owl_editwin_get_style(owl_editwin *e) |
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| 244 | { |
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[7d4fbcd] | 245 | return(e->style); |
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| 246 | } |
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| 247 | |
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[c9334b1] | 248 | void owl_editwin_new_style(owl_editwin *e, int newstyle, owl_history *h) |
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| 249 | { |
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[98f1e69] | 250 | e->hist = h; |
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| 251 | |
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[7d4fbcd] | 252 | if (e->style==newstyle) return; |
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| 253 | |
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| 254 | if (newstyle==OWL_EDITWIN_STYLE_MULTILINE) { |
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| 255 | e->style=newstyle; |
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| 256 | } else if (newstyle==OWL_EDITWIN_STYLE_ONELINE) { |
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| 257 | e->style=newstyle; |
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| 258 | |
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| 259 | /* nuke everything after the first line */ |
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[5b5f3e6] | 260 | owl_editwin_move_to_top(e); |
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| 261 | owl_editwin_move_to_end_of_line(e); |
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| 262 | owl_editwin_replace(e, oe_count_glyphs(e->buff + e->index), ""); |
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[7d4fbcd] | 263 | } |
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| 264 | } |
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| 265 | |
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[c9334b1] | 266 | /* completly reinitialize the buffer */ |
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| 267 | void owl_editwin_fullclear(owl_editwin *e) |
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| 268 | { |
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[7d4fbcd] | 269 | owl_free(e->buff); |
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[10b866d] | 270 | owl_editwin_init(e, e->curswin, e->winlines, e->wincols, e->style, e->hist); |
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[7d4fbcd] | 271 | } |
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| 272 | |
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[c9334b1] | 273 | /* clear all text except for locktext and put the cursor at the |
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| 274 | * beginning |
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| 275 | */ |
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| 276 | void owl_editwin_clear(owl_editwin *e) |
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| 277 | { |
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| 278 | |
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[6073462] | 279 | int lock = e->lock; |
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[10b866d] | 280 | int dotsend=e->dotsend; |
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[7d4fbcd] | 281 | char *locktext=NULL; |
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[cc6f009] | 282 | char echochar=e->echochar; |
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[10b866d] | 283 | |
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[6073462] | 284 | if (lock > 0) { |
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[5b5f3e6] | 285 | locktext = owl_malloc(lock+1); |
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| 286 | strncpy(locktext, e->buff, lock); |
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| 287 | locktext[lock] = 0; |
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[7d4fbcd] | 288 | } |
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| 289 | |
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| 290 | owl_free(e->buff); |
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[10b866d] | 291 | owl_editwin_init(e, e->curswin, e->winlines, e->wincols, e->style, e->hist); |
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[7d4fbcd] | 292 | |
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| 293 | if (lock > 0) { |
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| 294 | owl_editwin_set_locktext(e, locktext); |
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| 295 | } |
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[10b866d] | 296 | if (dotsend) { |
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| 297 | owl_editwin_set_dotsend(e); |
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| 298 | } |
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[cc6f009] | 299 | if (echochar) { |
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| 300 | owl_editwin_set_echochar(e, echochar); |
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| 301 | } |
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[7d4fbcd] | 302 | |
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[5b5f3e6] | 303 | if (locktext) |
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| 304 | owl_free(locktext); |
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[6073462] | 305 | |
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[521bc84] | 306 | oe_set_index(e, lock); |
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[7d4fbcd] | 307 | } |
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| 308 | |
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[c9334b1] | 309 | void owl_editwin_recenter(owl_editwin *e) |
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| 310 | { |
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[a556caa] | 311 | e->topindex = -1; |
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| 312 | } |
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[e20d8179] | 313 | |
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[a0fbdee] | 314 | static void oe_save_excursion(owl_editwin *e, oe_excursion *x) |
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| 315 | { |
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| 316 | x->index = e->index; |
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[7f0c26f] | 317 | x->mark = e->mark; |
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[a0fbdee] | 318 | x->goal_column = e->goal_column; |
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| 319 | x->lock = e->lock; |
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[ebf0128] | 320 | |
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| 321 | x->valid = VALID_EXCURSION; |
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| 322 | x->next = e->excursions; |
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| 323 | e->excursions = x; |
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| 324 | } |
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| 325 | |
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| 326 | static void oe_release_excursion(owl_editwin *e, oe_excursion *x) |
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| 327 | { |
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| 328 | oe_excursion *p; |
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| 329 | |
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| 330 | x->valid = 0; |
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| 331 | if (e->excursions == NULL) |
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| 332 | /* XXX huh. */ ; |
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| 333 | else if (e->excursions == x) |
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| 334 | e->excursions = x->next; |
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| 335 | else { |
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| 336 | for (p = e->excursions; p->next != NULL; p = p->next) |
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| 337 | if (p->next == x) { |
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| 338 | p->next = p->next->next; |
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| 339 | break; |
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| 340 | } |
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| 341 | /* and if we ran off the end? XXX */ |
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| 342 | } |
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[a0fbdee] | 343 | } |
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| 344 | |
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| 345 | static void oe_restore_excursion(owl_editwin *e, oe_excursion *x) |
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| 346 | { |
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[ebf0128] | 347 | if (x->valid == VALID_EXCURSION) { |
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| 348 | oe_set_index(e, x->index); |
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| 349 | e->goal_column = x->goal_column; |
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[7f0c26f] | 350 | e->mark = x->mark; |
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[ebf0128] | 351 | e->lock = x->lock; |
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| 352 | |
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| 353 | oe_release_excursion(e, x); |
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| 354 | } |
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[a0fbdee] | 355 | } |
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| 356 | |
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[a60edf2] | 357 | static void oe_restore_mark_only(owl_editwin *e, oe_excursion *x) |
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| 358 | { |
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| 359 | if (x->valid == VALID_EXCURSION) { |
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| 360 | e->mark = x->mark; |
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| 361 | |
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| 362 | oe_release_excursion(e, x); |
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| 363 | } |
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| 364 | } |
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| 365 | |
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[a88f35a] | 366 | /* External interface to oe_save_excursion */ |
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| 367 | owl_editwin_excursion *owl_editwin_begin_excursion(owl_editwin *e) |
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| 368 | { |
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| 369 | owl_editwin_excursion *x = owl_malloc(sizeof *x); |
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| 370 | oe_save_excursion(e, x); |
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| 371 | return x; |
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| 372 | } |
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| 373 | |
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| 374 | void owl_editwin_end_excursion(owl_editwin *e, owl_editwin_excursion *x) |
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| 375 | { |
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| 376 | oe_restore_excursion(e, x); |
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| 377 | owl_free(x); |
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| 378 | } |
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| 379 | |
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[e19eb97] | 380 | static inline const char *oe_next_point(owl_editwin *e, const char *p) |
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[e20d8179] | 381 | { |
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[e19eb97] | 382 | const char *boundary = e->buff + e->bufflen + 1; |
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| 383 | const char *q; |
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[e20d8179] | 384 | |
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| 385 | q = g_utf8_find_next_char(p, boundary); |
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| 386 | while (q && g_unichar_ismark(g_utf8_get_char(q))) |
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| 387 | q = g_utf8_find_next_char(q, boundary); |
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| 388 | |
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| 389 | if (q == p) |
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| 390 | return NULL; |
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| 391 | return q; |
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| 392 | } |
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| 393 | |
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[e19eb97] | 394 | static inline const char *oe_prev_point(owl_editwin *e, const char *p) |
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[e20d8179] | 395 | { |
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[e19eb97] | 396 | const char *boundary = e->buff + e->lock; |
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[e20d8179] | 397 | |
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| 398 | p = g_utf8_find_prev_char(boundary, p); |
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| 399 | while (p && g_unichar_ismark(g_utf8_get_char(p))) |
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| 400 | p = g_utf8_find_prev_char(boundary, p); |
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| 401 | |
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| 402 | return p; |
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| 403 | } |
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| 404 | |
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[ebf0128] | 405 | static int oe_char_width(gunichar c, int column) |
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| 406 | { |
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| 407 | int cw; |
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| 408 | |
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| 409 | if (c == 9) /* TAB */ |
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| 410 | return TABSIZE - column % TABSIZE; |
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| 411 | |
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| 412 | cw = mk_wcwidth(c); |
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| 413 | |
---|
| 414 | if (cw < 0) /* control characters */ |
---|
| 415 | cw = 0; |
---|
| 416 | |
---|
| 417 | return cw; |
---|
| 418 | } |
---|
| 419 | |
---|
[19f765d] | 420 | static int oe_find_display_line(owl_editwin *e, int *x, int index) |
---|
| 421 | { |
---|
| 422 | int width = 0, cw; |
---|
[ebf0128] | 423 | gunichar c; |
---|
[e19eb97] | 424 | const char *p; |
---|
[19f765d] | 425 | |
---|
[77d4402] | 426 | while(1) { |
---|
| 427 | /* note the position of the dot */ |
---|
[2021bea] | 428 | if (x != NULL && index == e->index && width < e->wincols) |
---|
[19f765d] | 429 | *x = width; |
---|
[77d4402] | 430 | |
---|
[19f765d] | 431 | /* get the current character */ |
---|
| 432 | c = g_utf8_get_char(e->buff + index); |
---|
| 433 | |
---|
| 434 | /* figure out how wide it is */ |
---|
[ebf0128] | 435 | cw = oe_char_width(c, width); |
---|
[19f765d] | 436 | |
---|
[77d4402] | 437 | if (width + cw > e->wincols) { |
---|
| 438 | if (x != NULL && *x == width) |
---|
| 439 | *x = -1; |
---|
[19f765d] | 440 | break; |
---|
[77d4402] | 441 | } |
---|
[19f765d] | 442 | width += cw; |
---|
| 443 | |
---|
| 444 | if (c == '\n') { |
---|
[77d4402] | 445 | if (width < e->wincols) |
---|
| 446 | ++index; /* skip the newline */ |
---|
[19f765d] | 447 | break; |
---|
| 448 | } |
---|
| 449 | |
---|
| 450 | /* find the next character */ |
---|
| 451 | p = oe_next_point(e, e->buff + index); |
---|
| 452 | if (p == NULL) { /* we ran off the end */ |
---|
| 453 | if (x != NULL && e->index > index) |
---|
| 454 | *x = width + 1; |
---|
| 455 | break; |
---|
| 456 | } |
---|
| 457 | index = p - e->buff; |
---|
[cedc95c] | 458 | |
---|
[19f765d] | 459 | } |
---|
| 460 | return index; |
---|
| 461 | } |
---|
| 462 | |
---|
[e20d8179] | 463 | static void oe_reframe(owl_editwin *e) { |
---|
[cedc95c] | 464 | oe_excursion x; |
---|
| 465 | int goal = e->winlines / 2; |
---|
| 466 | int index; |
---|
| 467 | int count = 0; |
---|
| 468 | int point; |
---|
| 469 | int n, i; |
---|
| 470 | int last; |
---|
| 471 | |
---|
| 472 | oe_save_excursion(e, &x); |
---|
| 473 | /* step back line-by-line through the buffer until we have >= goal lines of |
---|
| 474 | display text */ |
---|
| 475 | e->lock = 0; /* we can (must) tread on the locktext */ |
---|
| 476 | |
---|
| 477 | point = e->index; |
---|
| 478 | last = -1; |
---|
| 479 | while (count < goal) { |
---|
| 480 | index = e->index; |
---|
| 481 | owl_editwin_move_to_beginning_of_line(e); |
---|
| 482 | if (last == e->index) |
---|
| 483 | break; |
---|
| 484 | last = e->index; |
---|
| 485 | for (n = 0, i = e->index; i < index; n++) |
---|
| 486 | i = oe_find_display_line(e, NULL, i); |
---|
| 487 | count += n == 0 ? 1 : n; |
---|
| 488 | if (count < goal) |
---|
| 489 | owl_editwin_point_move(e, -1); |
---|
| 490 | } |
---|
| 491 | |
---|
| 492 | e->topindex = e->index; |
---|
[521bc84] | 493 | /* if we overshot, backtrack */ |
---|
| 494 | for (n = 0; n < (count - goal); n++) |
---|
| 495 | e->topindex = oe_find_display_line(e, NULL, e->topindex); |
---|
[cedc95c] | 496 | |
---|
| 497 | oe_restore_excursion(e, &x); |
---|
[7d4fbcd] | 498 | } |
---|
| 499 | |
---|
[3e36085] | 500 | static void oe_addnec(owl_editwin *e, int count) |
---|
| 501 | { |
---|
| 502 | int i; |
---|
| 503 | |
---|
| 504 | for (i = 0; i < count; i++) |
---|
| 505 | waddch(e->curswin, e->echochar); |
---|
| 506 | } |
---|
| 507 | |
---|
| 508 | static void oe_mvaddnec(owl_editwin *e, int y, int x, int count) |
---|
| 509 | { |
---|
| 510 | wmove(e->curswin, y, x); |
---|
| 511 | oe_addnec(e, count); |
---|
| 512 | } |
---|
| 513 | |
---|
[c9334b1] | 514 | /* regenerate the text on the curses window */ |
---|
| 515 | /* if update == 1 then do a doupdate(), otherwise do not */ |
---|
| 516 | void owl_editwin_redisplay(owl_editwin *e, int update) |
---|
| 517 | { |
---|
[19f765d] | 518 | int x = -1, y = -1, t; |
---|
[77d4402] | 519 | int line, index, lineindex, times = 0; |
---|
[7d4fbcd] | 520 | |
---|
[bd1a1ae] | 521 | do { |
---|
[cedc95c] | 522 | werase(e->curswin); |
---|
| 523 | |
---|
[bd1a1ae] | 524 | if (e->topindex == -1 || e->index < e->topindex) |
---|
[e20d8179] | 525 | oe_reframe(e); |
---|
| 526 | |
---|
[bd1a1ae] | 527 | line = 0; |
---|
| 528 | index = e->topindex; |
---|
| 529 | while(line < e->winlines) { |
---|
| 530 | lineindex = index; |
---|
[19f765d] | 531 | t = -1; |
---|
| 532 | index = oe_find_display_line(e, &t, lineindex); |
---|
| 533 | if (x == -1 && t != -1) |
---|
| 534 | x = t, y = line; |
---|
[3e36085] | 535 | if (index - lineindex) { |
---|
| 536 | if (!e->echochar) |
---|
| 537 | mvwaddnstr(e->curswin, line, 0, |
---|
| 538 | e->buff + lineindex, |
---|
| 539 | index - lineindex); |
---|
| 540 | else { |
---|
| 541 | if(lineindex < e->lock) { |
---|
| 542 | mvwaddnstr(e->curswin, line, 0, |
---|
| 543 | e->buff + lineindex, |
---|
| 544 | MIN(index - lineindex, |
---|
| 545 | e->lock - lineindex)); |
---|
| 546 | if (e->lock < index) |
---|
| 547 | oe_addnec(e, |
---|
| 548 | oe_region_width(e, e->lock, index, |
---|
| 549 | oe_region_width(e, lineindex, e->lock, 0))); |
---|
| 550 | } else |
---|
| 551 | oe_mvaddnec(e, line, 0, oe_region_width(e, line, index, 0)); |
---|
| 552 | } |
---|
| 553 | } |
---|
[bd1a1ae] | 554 | line++; |
---|
[a556caa] | 555 | } |
---|
[19f765d] | 556 | if (x == -1) |
---|
[bd1a1ae] | 557 | e->topindex = -1; /* force a reframe */ |
---|
[77d4402] | 558 | times++; |
---|
| 559 | } while(x == -1 && times < 3); |
---|
[e20d8179] | 560 | |
---|
[19f765d] | 561 | wmove(e->curswin, y, x); |
---|
[ebf0128] | 562 | e->cursorx = x; |
---|
| 563 | |
---|
[7d4fbcd] | 564 | wnoutrefresh(e->curswin); |
---|
[a556caa] | 565 | if (update == 1) |
---|
[7d4fbcd] | 566 | doupdate(); |
---|
| 567 | } |
---|
| 568 | |
---|
[7f0c26f] | 569 | static inline void oe_fixup(int *target, int start, int end, int change) { |
---|
| 570 | if (*target > start) { |
---|
| 571 | if (*target < end) |
---|
| 572 | *target = end; |
---|
| 573 | else |
---|
| 574 | *target += change; |
---|
| 575 | } |
---|
| 576 | } |
---|
| 577 | |
---|
[e19eb97] | 578 | int owl_editwin_replace_region(owl_editwin *e, const char *s) |
---|
[a88f35a] | 579 | { |
---|
| 580 | oe_excursion x; |
---|
| 581 | int ret; |
---|
[5ebc202] | 582 | oe_save_excursion(e, &x); |
---|
[a88f35a] | 583 | |
---|
| 584 | if(e->index > e->mark) { |
---|
| 585 | owl_editwin_exchange_point_and_mark(e); |
---|
| 586 | } |
---|
| 587 | |
---|
| 588 | ret = owl_editwin_replace_internal(e, e->mark - e->index, s); |
---|
| 589 | |
---|
| 590 | oe_restore_excursion(e, &x); |
---|
| 591 | |
---|
| 592 | return ret; |
---|
| 593 | } |
---|
| 594 | |
---|
[19a023f] | 595 | /* replace 'replace' characters at the point with s, returning the change in size */ |
---|
[e19eb97] | 596 | int owl_editwin_replace(owl_editwin *e, int replace, const char *s) |
---|
[ebf0128] | 597 | { |
---|
[19a023f] | 598 | int start, end, i; |
---|
[e19eb97] | 599 | const char *p; |
---|
[e9bb404] | 600 | |
---|
[5b5f3e6] | 601 | if (!g_utf8_validate(s, -1, NULL)) { |
---|
| 602 | owl_function_debugmsg("owl_editwin_insert_string: received non-utf-8 string."); |
---|
[ebf0128] | 603 | return 0; |
---|
[47519e1b] | 604 | } |
---|
| 605 | |
---|
[5b5f3e6] | 606 | start = e->index; |
---|
| 607 | for (i = 0, p = e->buff + start; i < replace && p != NULL; i++) |
---|
| 608 | p = oe_next_point(e, p); |
---|
| 609 | if (p != NULL) |
---|
| 610 | end = p - e->buff; |
---|
| 611 | else |
---|
| 612 | end = e->bufflen; |
---|
| 613 | |
---|
[19a023f] | 614 | return owl_editwin_replace_internal(e, end - start, s); |
---|
| 615 | } |
---|
| 616 | |
---|
[e19eb97] | 617 | static int owl_editwin_replace_internal(owl_editwin *e, int replace, const char *s) |
---|
[19a023f] | 618 | { |
---|
| 619 | int start, end, free, need, size, change; |
---|
| 620 | oe_excursion *x; |
---|
| 621 | char *p; |
---|
| 622 | |
---|
| 623 | start = e->index; |
---|
| 624 | end = start + replace; |
---|
| 625 | |
---|
[5b5f3e6] | 626 | free = e->allocated - e->bufflen + end - start; |
---|
| 627 | |
---|
| 628 | need = strlen(s) - free; |
---|
| 629 | if (need > 0) { |
---|
| 630 | size = e->allocated + need + INCR - (need % INCR); |
---|
[a60edf2] | 631 | p = owl_realloc(e->buff, size); |
---|
[5b5f3e6] | 632 | if (p == NULL) { |
---|
| 633 | /* XXX signal impending doom somehow and don't do anything */ |
---|
[ebf0128] | 634 | return 0; |
---|
[e9bb404] | 635 | } |
---|
[5b5f3e6] | 636 | e->buff = p; |
---|
| 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 | |
---|
| 655 | return change; |
---|
[47519e1b] | 656 | } |
---|
| 657 | |
---|
[c9334b1] | 658 | /* linewrap the word just before the cursor. |
---|
| 659 | * returns 0 on success |
---|
| 660 | * returns -1 if we could not wrap. |
---|
| 661 | */ |
---|
[fc2677b] | 662 | static void _owl_editwin_linewrap_word(owl_editwin *e) |
---|
[c9334b1] | 663 | { |
---|
[fc2677b] | 664 | oe_excursion x; |
---|
[84027015] | 665 | gunichar c; |
---|
[7d4fbcd] | 666 | |
---|
[fc2677b] | 667 | oe_save_excursion(e, &x); |
---|
[84027015] | 668 | |
---|
[fc2677b] | 669 | while (owl_editwin_point_move(e, -1)) { |
---|
| 670 | c = owl_editwin_get_char_at_point(e); |
---|
| 671 | if (owl_util_can_break_after(c) || c == '\n') { |
---|
| 672 | if (c != '\n') |
---|
| 673 | owl_editwin_replace(e, c != ' ' ? 0 : 1, "\n"); |
---|
| 674 | break; |
---|
[2d4ff14] | 675 | } |
---|
[7d4fbcd] | 676 | } |
---|
[fc2677b] | 677 | |
---|
| 678 | oe_restore_excursion(e, &x); |
---|
[7d4fbcd] | 679 | } |
---|
| 680 | |
---|
[c9334b1] | 681 | /* delete the character at the current point, following chars |
---|
| 682 | * shift left. |
---|
[e20d8179] | 683 | */ |
---|
[c9334b1] | 684 | void owl_editwin_delete_char(owl_editwin *e) |
---|
| 685 | { |
---|
[5b5f3e6] | 686 | owl_editwin_replace(e, 1, ""); |
---|
[7d4fbcd] | 687 | } |
---|
| 688 | |
---|
[c9334b1] | 689 | /* Swap the character at point with the character at point-1 and |
---|
| 690 | * advance the pointer. If point is at beginning of buffer do |
---|
| 691 | * nothing. If point is after the last character swap point-1 with |
---|
[e20d8179] | 692 | * point-2. (Behaves as observed in tcsh and emacs). |
---|
[c9334b1] | 693 | */ |
---|
| 694 | void owl_editwin_transpose_chars(owl_editwin *e) |
---|
| 695 | { |
---|
[e19eb97] | 696 | const char *middle, *end, *start; |
---|
[65b2173] | 697 | char *tmp; |
---|
[f2e36b5] | 698 | |
---|
[47519e1b] | 699 | if (e->bufflen == 0) return; |
---|
[e20d8179] | 700 | |
---|
[5b5f3e6] | 701 | if (e->index == e->bufflen) |
---|
| 702 | owl_editwin_point_move(e, -1); /* point is after last character */ |
---|
[f2e36b5] | 703 | |
---|
[5b5f3e6] | 704 | if (owl_editwin_at_beginning_of_buffer(e)) |
---|
| 705 | return; /* point is at beginning of buffer, do nothing */ |
---|
[f2e36b5] | 706 | |
---|
[47519e1b] | 707 | /* Transpose two utf-8 unicode glyphs. */ |
---|
[5b5f3e6] | 708 | middle = e->buff + e->index; |
---|
[47519e1b] | 709 | |
---|
[5b5f3e6] | 710 | end = oe_next_point(e, middle); |
---|
| 711 | if (end == NULL) |
---|
[e20d8179] | 712 | return; |
---|
[47519e1b] | 713 | |
---|
[5b5f3e6] | 714 | start = oe_prev_point(e, middle); |
---|
| 715 | if (start == NULL) |
---|
[e20d8179] | 716 | return; |
---|
[47519e1b] | 717 | |
---|
[5b5f3e6] | 718 | tmp = owl_malloc((end - start) + 1); |
---|
| 719 | tmp[(end - start)] = 0; |
---|
| 720 | memcpy(tmp, middle, end - middle); |
---|
| 721 | memcpy(tmp + (end - middle), start, middle - start); |
---|
| 722 | |
---|
| 723 | owl_editwin_point_move(e, -1); |
---|
| 724 | owl_editwin_replace(e, 2, tmp); |
---|
[f2e36b5] | 725 | } |
---|
| 726 | |
---|
[c9334b1] | 727 | /* insert 'string' at the current point, later text is shifted |
---|
| 728 | * right |
---|
| 729 | */ |
---|
[e19eb97] | 730 | void owl_editwin_insert_string(owl_editwin *e, const char *s) |
---|
[c9334b1] | 731 | { |
---|
[5b5f3e6] | 732 | owl_editwin_replace(e, 0, s); |
---|
[7d4fbcd] | 733 | } |
---|
| 734 | |
---|
[a556caa] | 735 | /* We assume index is not set to point to a mid-char */ |
---|
[bab52da] | 736 | static gunichar owl_editwin_get_char_at_point(owl_editwin *e) |
---|
[c9334b1] | 737 | { |
---|
[a556caa] | 738 | return g_utf8_get_char(e->buff + e->index); |
---|
| 739 | } |
---|
[7d4fbcd] | 740 | |
---|
[7f0c26f] | 741 | void owl_editwin_exchange_point_and_mark(owl_editwin *e) { |
---|
| 742 | int tmp; |
---|
| 743 | |
---|
| 744 | if (e->mark != -1) { |
---|
| 745 | tmp = e->mark; |
---|
| 746 | owl_editwin_set_mark(e); |
---|
| 747 | oe_set_index(e, tmp); |
---|
| 748 | } |
---|
| 749 | } |
---|
| 750 | |
---|
[e20d8179] | 751 | int owl_editwin_point_move(owl_editwin *e, int delta) |
---|
[84027015] | 752 | { |
---|
[e19eb97] | 753 | const char *p; |
---|
[19f765d] | 754 | int change, d = 0; |
---|
[a556caa] | 755 | |
---|
| 756 | change = MAX(delta, - delta); |
---|
| 757 | p = e->buff + e->index; |
---|
| 758 | |
---|
| 759 | while (d < change && p != NULL) { |
---|
[e20d8179] | 760 | if (delta > 0) |
---|
| 761 | p = oe_next_point(e, p); |
---|
| 762 | else |
---|
| 763 | p = oe_prev_point(e, p); |
---|
| 764 | if (p != NULL) { |
---|
[521bc84] | 765 | oe_set_index(e, p - e->buff); |
---|
[e20d8179] | 766 | d++; |
---|
[a556caa] | 767 | } |
---|
| 768 | } |
---|
| 769 | |
---|
| 770 | return delta > 0 ? d : -d; |
---|
[84027015] | 771 | } |
---|
| 772 | |
---|
[a556caa] | 773 | int owl_editwin_at_beginning_of_buffer(owl_editwin *e) { |
---|
| 774 | if (e->index == e->lock) |
---|
| 775 | return 1; |
---|
[84027015] | 776 | |
---|
[a556caa] | 777 | return 0; |
---|
| 778 | } |
---|
| 779 | |
---|
| 780 | int owl_at_end_of_buffer(owl_editwin *e) { |
---|
| 781 | if (e->index == e->bufflen) |
---|
| 782 | return 1; |
---|
| 783 | |
---|
| 784 | return 0; |
---|
| 785 | } |
---|
| 786 | |
---|
| 787 | int owl_editwin_at_beginning_of_line(owl_editwin *e) /*noproto*/ |
---|
[c9334b1] | 788 | { |
---|
[a0fbdee] | 789 | oe_excursion x; |
---|
[a556caa] | 790 | int ret; |
---|
[47519e1b] | 791 | |
---|
[a556caa] | 792 | if (owl_editwin_at_beginning_of_buffer(e)) |
---|
| 793 | return 1; |
---|
[47519e1b] | 794 | |
---|
[a0fbdee] | 795 | oe_save_excursion(e, &x); |
---|
[a556caa] | 796 | owl_editwin_point_move(e, -1); |
---|
[bab52da] | 797 | ret = (owl_editwin_get_char_at_point(e) == '\n'); |
---|
[a0fbdee] | 798 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 799 | |
---|
| 800 | return ret; |
---|
| 801 | } |
---|
| 802 | |
---|
[e19eb97] | 803 | static int owl_editwin_is_char_in(owl_editwin *e, const char *set) |
---|
[a556caa] | 804 | { |
---|
[e19eb97] | 805 | const char *p; |
---|
[5b5f3e6] | 806 | |
---|
| 807 | for (p = set; *p != 0; p = g_utf8_find_next_char(p, NULL)) |
---|
| 808 | if (owl_editwin_get_char_at_point(e) == g_utf8_get_char(p)) |
---|
[a556caa] | 809 | return 1; |
---|
| 810 | return 0; |
---|
| 811 | } |
---|
| 812 | |
---|
[e19eb97] | 813 | int owl_editwin_move_if_in(owl_editwin *e, int delta, const char *set) |
---|
[a556caa] | 814 | { |
---|
| 815 | int change, distance = 0; |
---|
[e20d8179] | 816 | while (owl_editwin_is_char_in(e, set)) { |
---|
[a556caa] | 817 | change = owl_editwin_point_move(e, delta); |
---|
| 818 | distance += change; |
---|
| 819 | if (change == 0) |
---|
| 820 | break; |
---|
[47519e1b] | 821 | } |
---|
[a556caa] | 822 | return distance; |
---|
| 823 | } |
---|
| 824 | |
---|
[e19eb97] | 825 | int owl_editwin_move_if_not_in(owl_editwin *e, int delta, const char *set) |
---|
[a556caa] | 826 | { |
---|
| 827 | int change, distance = 0; |
---|
[e20d8179] | 828 | while (!owl_editwin_is_char_in(e, set)) { |
---|
[a556caa] | 829 | change = owl_editwin_point_move(e, delta); |
---|
| 830 | distance += change; |
---|
| 831 | if (change == 0) |
---|
| 832 | break; |
---|
[7d4fbcd] | 833 | } |
---|
[a556caa] | 834 | return distance; |
---|
[7d4fbcd] | 835 | } |
---|
| 836 | |
---|
[e20d8179] | 837 | int owl_editwin_move_to_beginning_of_line(owl_editwin *e) |
---|
[47519e1b] | 838 | { |
---|
[a556caa] | 839 | int distance = 0; |
---|
[47519e1b] | 840 | |
---|
[a556caa] | 841 | if (!owl_editwin_at_beginning_of_line(e)) { |
---|
| 842 | /* move off the \n if were at the end of a line */ |
---|
| 843 | distance += owl_editwin_point_move(e, -1); |
---|
| 844 | distance += owl_editwin_move_if_not_in(e, -1, "\n"); |
---|
| 845 | if (distance && !owl_editwin_at_beginning_of_buffer(e)) |
---|
| 846 | distance += owl_editwin_point_move(e, 1); |
---|
[47519e1b] | 847 | } |
---|
[77d4402] | 848 | e->goal_column = 0; /* subtleties */ |
---|
[84027015] | 849 | |
---|
[a556caa] | 850 | return distance; |
---|
| 851 | } |
---|
[e20d8179] | 852 | |
---|
| 853 | int owl_editwin_move_to_end_of_line(owl_editwin *e) |
---|
[a556caa] | 854 | { |
---|
| 855 | return owl_editwin_move_if_not_in(e, 1, "\n"); |
---|
[47519e1b] | 856 | } |
---|
| 857 | |
---|
[e20d8179] | 858 | int owl_editwin_line_move(owl_editwin *e, int delta) |
---|
[c9334b1] | 859 | { |
---|
[d7043b4] | 860 | int goal_column, change, ll, distance; |
---|
| 861 | int count = 0; |
---|
[a556caa] | 862 | |
---|
| 863 | change = MAX(delta, -delta); |
---|
| 864 | |
---|
[d7043b4] | 865 | goal_column = e->goal_column; |
---|
| 866 | distance = owl_editwin_move_to_beginning_of_line(e); |
---|
| 867 | goal_column = goal_column == -1 ? -distance : goal_column; |
---|
[a556caa] | 868 | |
---|
| 869 | while(count < change) { |
---|
| 870 | if (delta > 0) { |
---|
| 871 | distance += owl_editwin_move_if_not_in(e, 1, "\n"); |
---|
| 872 | distance += owl_editwin_point_move(e, 1); |
---|
| 873 | } else { |
---|
| 874 | /* I really want to assert delta < 0 here */ |
---|
| 875 | distance += owl_editwin_point_move(e, -1); /* to the newline on |
---|
| 876 | the previous line */ |
---|
| 877 | distance += owl_editwin_move_to_beginning_of_line(e); |
---|
| 878 | } |
---|
| 879 | count++; |
---|
[7d4fbcd] | 880 | } |
---|
[a556caa] | 881 | |
---|
| 882 | distance += (ll = owl_editwin_move_to_end_of_line(e)); |
---|
| 883 | if (ll > goal_column) |
---|
| 884 | distance += owl_editwin_point_move(e, goal_column - ll); |
---|
| 885 | |
---|
| 886 | e->goal_column = goal_column; |
---|
| 887 | |
---|
| 888 | return distance; |
---|
[7d4fbcd] | 889 | } |
---|
| 890 | |
---|
[c9334b1] | 891 | void owl_editwin_backspace(owl_editwin *e) |
---|
| 892 | { |
---|
[7d4fbcd] | 893 | /* delete the char before the current one |
---|
| 894 | * and shift later chars left |
---|
| 895 | */ |
---|
[a556caa] | 896 | if(owl_editwin_point_move(e, -1)) |
---|
[7d4fbcd] | 897 | owl_editwin_delete_char(e); |
---|
| 898 | } |
---|
| 899 | |
---|
[c9334b1] | 900 | void owl_editwin_key_up(owl_editwin *e) |
---|
| 901 | { |
---|
[a556caa] | 902 | owl_editwin_line_move(e, -1); |
---|
[7d4fbcd] | 903 | } |
---|
| 904 | |
---|
[c9334b1] | 905 | void owl_editwin_key_down(owl_editwin *e) |
---|
| 906 | { |
---|
[a556caa] | 907 | owl_editwin_line_move(e, 1); |
---|
[7d4fbcd] | 908 | } |
---|
| 909 | |
---|
[c9334b1] | 910 | void owl_editwin_key_left(owl_editwin *e) |
---|
| 911 | { |
---|
[a556caa] | 912 | owl_editwin_point_move(e, -1); |
---|
[7d4fbcd] | 913 | } |
---|
| 914 | |
---|
[c9334b1] | 915 | void owl_editwin_key_right(owl_editwin *e) |
---|
| 916 | { |
---|
[a556caa] | 917 | owl_editwin_point_move(e, 1); |
---|
[7d4fbcd] | 918 | } |
---|
| 919 | |
---|
[5b5f3e6] | 920 | int owl_editwin_forward_word(owl_editwin *e) |
---|
[c9334b1] | 921 | { |
---|
[5b5f3e6] | 922 | int distance; |
---|
[7d4fbcd] | 923 | /* if we're starting on a space, find the first non-space */ |
---|
[5b5f3e6] | 924 | distance = owl_editwin_move_if_in(e, 1, WHITESPACE); |
---|
[7d4fbcd] | 925 | |
---|
[a556caa] | 926 | /* now find the end of this word */ |
---|
[5b5f3e6] | 927 | distance += owl_editwin_move_if_not_in(e, 1, WHITESPACE); |
---|
| 928 | |
---|
| 929 | return distance; |
---|
| 930 | } |
---|
| 931 | |
---|
| 932 | void owl_editwin_move_to_nextword(owl_editwin *e) |
---|
| 933 | { |
---|
| 934 | owl_editwin_forward_word(e); |
---|
[7d4fbcd] | 935 | } |
---|
| 936 | |
---|
[c9334b1] | 937 | /* go backwards to the last non-space character |
---|
| 938 | */ |
---|
[5b5f3e6] | 939 | int owl_editwin_backward_word(owl_editwin *e) |
---|
[c9334b1] | 940 | { |
---|
[a0fbdee] | 941 | oe_excursion x; |
---|
[5b5f3e6] | 942 | int distance = 0; |
---|
| 943 | int further = 0; |
---|
[a556caa] | 944 | int beginning; |
---|
| 945 | /* if in middle of word, beginning of word */ |
---|
| 946 | |
---|
| 947 | /* if at beginning of a word, find beginning of previous word */ |
---|
| 948 | |
---|
[e20d8179] | 949 | if (owl_editwin_is_char_in(e, WHITESPACE)) { |
---|
[a556caa] | 950 | /* if in whitespace past end of word, find a word , the find the beginning*/ |
---|
[5b5f3e6] | 951 | distance += owl_editwin_move_if_in(e, -1, WHITESPACE); /* leaves us on the last |
---|
| 952 | character of the word */ |
---|
[a0fbdee] | 953 | oe_save_excursion(e, &x); |
---|
[a556caa] | 954 | /* are we at the beginning of a word? */ |
---|
| 955 | owl_editwin_point_move(e, -1); |
---|
[e20d8179] | 956 | beginning = owl_editwin_is_char_in(e, WHITESPACE); |
---|
[a0fbdee] | 957 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 958 | if (beginning) |
---|
[5b5f3e6] | 959 | return distance; |
---|
[a556caa] | 960 | } else { |
---|
| 961 | /* in the middle of the word; */ |
---|
[a0fbdee] | 962 | oe_save_excursion(e, &x); |
---|
[5b5f3e6] | 963 | further += owl_editwin_point_move(e, -1); |
---|
[e20d8179] | 964 | if (owl_editwin_is_char_in(e, WHITESPACE)) { /* we were at the beginning */ |
---|
[5b5f3e6] | 965 | distance += owl_editwin_backward_word(e); /* previous case */ |
---|
[8321cb7] | 966 | oe_release_excursion(e, &x); |
---|
[5b5f3e6] | 967 | return distance + further; |
---|
[a556caa] | 968 | } else { |
---|
[a0fbdee] | 969 | oe_restore_excursion(e, &x); |
---|
[7d4fbcd] | 970 | } |
---|
| 971 | } |
---|
[5b5f3e6] | 972 | distance += owl_editwin_move_if_not_in(e, -1, WHITESPACE); |
---|
[a556caa] | 973 | /* will go past */ |
---|
| 974 | if (e->index > e->lock) |
---|
[5b5f3e6] | 975 | distance += owl_editwin_point_move(e, 1); |
---|
| 976 | return distance; |
---|
| 977 | } |
---|
| 978 | |
---|
| 979 | void owl_editwin_move_to_previousword(owl_editwin *e) |
---|
| 980 | { |
---|
| 981 | owl_editwin_backward_word(e); |
---|
[7d4fbcd] | 982 | } |
---|
| 983 | |
---|
[c9334b1] | 984 | void owl_editwin_delete_nextword(owl_editwin *e) |
---|
| 985 | { |
---|
[a0fbdee] | 986 | oe_excursion x; |
---|
[a556caa] | 987 | |
---|
[a0fbdee] | 988 | oe_save_excursion(e, &x); |
---|
[a60edf2] | 989 | oe_set_mark(e, e->index); |
---|
| 990 | owl_editwin_forward_word(e); |
---|
| 991 | owl_editwin_kill_region(e); |
---|
| 992 | oe_restore_mark_only(e, &x); |
---|
[7d4fbcd] | 993 | } |
---|
| 994 | |
---|
[c9334b1] | 995 | void owl_editwin_delete_previousword(owl_editwin *e) |
---|
| 996 | { |
---|
[a60edf2] | 997 | oe_excursion x; |
---|
[b68f9cd] | 998 | |
---|
[a60edf2] | 999 | oe_save_excursion(e, &x); |
---|
| 1000 | oe_set_mark(e, e->index); |
---|
| 1001 | owl_editwin_backward_word(e); |
---|
| 1002 | owl_editwin_kill_region(e); |
---|
| 1003 | oe_restore_mark_only(e, &x); |
---|
[b68f9cd] | 1004 | } |
---|
| 1005 | |
---|
[a556caa] | 1006 | void owl_editwin_move_to_line_end(owl_editwin *e) |
---|
[c9334b1] | 1007 | { |
---|
[a556caa] | 1008 | owl_editwin_move_to_end_of_line(e); |
---|
[7d4fbcd] | 1009 | } |
---|
| 1010 | |
---|
[a556caa] | 1011 | void owl_editwin_delete_to_endofline(owl_editwin *e) |
---|
[c9334b1] | 1012 | { |
---|
[a0fbdee] | 1013 | oe_excursion x; |
---|
[5b5f3e6] | 1014 | int distance; |
---|
[a556caa] | 1015 | |
---|
[a0fbdee] | 1016 | oe_save_excursion(e, &x); |
---|
[a60edf2] | 1017 | owl_editwin_set_mark(e); |
---|
[5b5f3e6] | 1018 | distance = owl_editwin_move_to_end_of_line(e); |
---|
[a60edf2] | 1019 | if (distance) |
---|
| 1020 | owl_editwin_kill_region(e); |
---|
| 1021 | else |
---|
| 1022 | owl_editwin_replace(e, 1, ""); |
---|
[a0fbdee] | 1023 | oe_restore_excursion(e, &x); |
---|
[a60edf2] | 1024 | } |
---|
| 1025 | |
---|
| 1026 | void owl_editwin_yank(owl_editwin *e) |
---|
| 1027 | { |
---|
| 1028 | if (e->killbuf != NULL) |
---|
| 1029 | owl_editwin_replace(e, 0, e->killbuf); |
---|
| 1030 | } |
---|
| 1031 | |
---|
[e19eb97] | 1032 | static const char *oe_copy_buf(owl_editwin *e, const char *buf, int len) |
---|
[a60edf2] | 1033 | { |
---|
| 1034 | char *p; |
---|
| 1035 | |
---|
| 1036 | p = owl_malloc(len + 1); |
---|
| 1037 | |
---|
| 1038 | if (p != NULL) { |
---|
| 1039 | owl_free(e->killbuf); |
---|
| 1040 | e->killbuf = p; |
---|
| 1041 | memcpy(e->killbuf, buf, len); |
---|
| 1042 | e->killbuf[len] = 0; |
---|
| 1043 | } |
---|
| 1044 | |
---|
| 1045 | return p; |
---|
| 1046 | } |
---|
| 1047 | |
---|
| 1048 | static int oe_copy_region(owl_editwin *e) |
---|
| 1049 | { |
---|
[e19eb97] | 1050 | const char *p; |
---|
[a60edf2] | 1051 | int start, end; |
---|
| 1052 | |
---|
| 1053 | if (e->mark == -1) |
---|
| 1054 | return 0; |
---|
| 1055 | |
---|
| 1056 | start = MIN(e->index, e->mark); |
---|
| 1057 | end = MAX(e->index, e->mark); |
---|
| 1058 | |
---|
| 1059 | p = oe_copy_buf(e, e->buff + start, end - start); |
---|
| 1060 | if (p != NULL) |
---|
| 1061 | return end - start; |
---|
| 1062 | return 0; |
---|
| 1063 | } |
---|
| 1064 | |
---|
| 1065 | void owl_editwin_copy_region_as_kill(owl_editwin *e) |
---|
| 1066 | { |
---|
| 1067 | oe_copy_region(e); |
---|
| 1068 | } |
---|
| 1069 | |
---|
| 1070 | void owl_editwin_kill_region(owl_editwin *e) |
---|
| 1071 | { |
---|
| 1072 | if (e->index > e->mark) |
---|
| 1073 | owl_editwin_exchange_point_and_mark(e); |
---|
| 1074 | |
---|
| 1075 | owl_editwin_replace(e, oe_copy_region(e), ""); |
---|
[7d4fbcd] | 1076 | } |
---|
| 1077 | |
---|
[c9334b1] | 1078 | void owl_editwin_move_to_line_start(owl_editwin *e) |
---|
| 1079 | { |
---|
[a556caa] | 1080 | owl_editwin_move_to_beginning_of_line(e); |
---|
[7d4fbcd] | 1081 | } |
---|
| 1082 | |
---|
[c9334b1] | 1083 | void owl_editwin_move_to_end(owl_editwin *e) |
---|
| 1084 | { |
---|
[521bc84] | 1085 | oe_set_index(e, e->bufflen); |
---|
[7d4fbcd] | 1086 | } |
---|
| 1087 | |
---|
[c9334b1] | 1088 | void owl_editwin_move_to_top(owl_editwin *e) |
---|
| 1089 | { |
---|
[521bc84] | 1090 | oe_set_index(e, e->lock); |
---|
[7d4fbcd] | 1091 | } |
---|
| 1092 | |
---|
[2fc8397] | 1093 | void owl_editwin_backward_paragraph(owl_editwin *e) |
---|
| 1094 | { |
---|
| 1095 | owl_editwin_point_move(e, -1); |
---|
| 1096 | for (; e->index >= e->lock; owl_editwin_point_move(e, -1)) { |
---|
| 1097 | if (e->index <= e->lock || |
---|
| 1098 | ((e->buff[e->index] == '\n') && (e->buff[e->index - 1]=='\n'))) |
---|
| 1099 | break; |
---|
| 1100 | } |
---|
| 1101 | } |
---|
| 1102 | |
---|
| 1103 | void owl_editwin_forward_paragraph(owl_editwin *e) |
---|
| 1104 | { |
---|
| 1105 | owl_editwin_point_move(e, 1); |
---|
| 1106 | /* scan forward to the start of the next paragraph */ |
---|
| 1107 | for(; e->index < e->bufflen; owl_editwin_point_move(e, 1)) { |
---|
| 1108 | if (e->buff[e->index -1] == '\n' && e->buff[e->index] == '\n') |
---|
| 1109 | break; |
---|
| 1110 | } |
---|
| 1111 | } |
---|
| 1112 | |
---|
[d41294a] | 1113 | int owl_editwin_current_column(owl_editwin *e) |
---|
[c9334b1] | 1114 | { |
---|
[a0fbdee] | 1115 | oe_excursion x; |
---|
[fc2677b] | 1116 | int lineindex; |
---|
[7d4fbcd] | 1117 | |
---|
[a0fbdee] | 1118 | oe_save_excursion(e, &x); |
---|
[fc2677b] | 1119 | owl_editwin_move_to_beginning_of_line(e); |
---|
| 1120 | lineindex = e->index; |
---|
| 1121 | oe_restore_excursion(e, &x); |
---|
| 1122 | return oe_region_width(e, lineindex, e->index, 0); |
---|
| 1123 | } |
---|
[a556caa] | 1124 | |
---|
[fc2677b] | 1125 | void owl_editwin_fill_paragraph(owl_editwin *e) |
---|
| 1126 | { |
---|
| 1127 | oe_excursion x; |
---|
| 1128 | gunichar ch; |
---|
| 1129 | int sentence; |
---|
[7d4fbcd] | 1130 | |
---|
[fc2677b] | 1131 | oe_save_excursion(e, &x); |
---|
[7d4fbcd] | 1132 | |
---|
[fc2677b] | 1133 | /* Mark the end of the paragraph */ |
---|
| 1134 | owl_editwin_forward_paragraph(e); |
---|
| 1135 | /* Skip the trailing newline */ |
---|
| 1136 | owl_editwin_point_move(e, -1); |
---|
| 1137 | owl_editwin_set_mark(e); |
---|
[7d4fbcd] | 1138 | |
---|
[fc2677b] | 1139 | owl_editwin_backward_paragraph(e); |
---|
[7d4fbcd] | 1140 | |
---|
[fc2677b] | 1141 | /* Don't mess with the leading newline */ |
---|
| 1142 | if (owl_editwin_get_char_at_point(e) == '\n') |
---|
| 1143 | owl_editwin_point_move(e, 1); |
---|
[7d4fbcd] | 1144 | |
---|
[fc2677b] | 1145 | /* |
---|
| 1146 | * First pass: Scan forward replacing all series of spaces with ' ' |
---|
| 1147 | * (or nothing after CJK ideograms) |
---|
| 1148 | */ |
---|
| 1149 | sentence = 0; |
---|
| 1150 | for(;e->index < e->mark; owl_editwin_point_move(e, 1)) { |
---|
[50e671c] | 1151 | /* bail if we hit a trailing dot on the buffer */ |
---|
[fc2677b] | 1152 | if (strcmp(e->buff + e->index, "\n.") == 0) { |
---|
| 1153 | owl_editwin_set_mark(e); |
---|
[50e671c] | 1154 | break; |
---|
[7d4fbcd] | 1155 | } |
---|
| 1156 | |
---|
[fc2677b] | 1157 | ch = owl_editwin_get_char_at_point(e); |
---|
[b2c1bd4] | 1158 | |
---|
[fc2677b] | 1159 | if (owl_util_can_break_after(ch) || ch == '\n') { |
---|
| 1160 | if (g_unichar_isspace(ch)) { |
---|
| 1161 | owl_editwin_replace(e, 1, " "); |
---|
| 1162 | } |
---|
| 1163 | |
---|
[bd7fb58] | 1164 | if (sentence && g_unichar_isspace(owl_editwin_get_char_at_point(e))) |
---|
[fc2677b] | 1165 | owl_editwin_point_move(e, 1); |
---|
| 1166 | |
---|
| 1167 | while(g_unichar_isspace(owl_editwin_get_char_at_point(e)) |
---|
| 1168 | && e->index < e->mark) { |
---|
| 1169 | owl_editwin_delete_char(e); |
---|
[7d4fbcd] | 1170 | } |
---|
| 1171 | } |
---|
[fc2677b] | 1172 | |
---|
| 1173 | if(ch == '.' || ch == '!' || ch == '?') |
---|
| 1174 | sentence = 1; |
---|
| 1175 | else |
---|
| 1176 | sentence = 0; |
---|
| 1177 | } |
---|
| 1178 | |
---|
| 1179 | owl_editwin_backward_paragraph(e); |
---|
| 1180 | |
---|
| 1181 | /* Now go through inserting newlines as needed */ |
---|
| 1182 | while(e->index < e->mark) { |
---|
| 1183 | /* if we've travelled too far, linewrap */ |
---|
[d41294a] | 1184 | if (owl_editwin_current_column(e) >= e->fillcol) |
---|
[fc2677b] | 1185 | _owl_editwin_linewrap_word(e); |
---|
| 1186 | owl_editwin_point_move(e, 1); |
---|
[7d4fbcd] | 1187 | } |
---|
| 1188 | |
---|
[a0fbdee] | 1189 | oe_restore_excursion(e, &x); |
---|
[7d4fbcd] | 1190 | } |
---|
| 1191 | |
---|
[cf83b7a] | 1192 | /* returns true if only whitespace remains */ |
---|
[c9334b1] | 1193 | int owl_editwin_is_at_end(owl_editwin *e) |
---|
| 1194 | { |
---|
[a556caa] | 1195 | return (only_whitespace(e->buff + e->index)); |
---|
[217a43e] | 1196 | } |
---|
| 1197 | |
---|
[bab52da] | 1198 | static int owl_editwin_check_dotsend(owl_editwin *e) |
---|
[c9334b1] | 1199 | { |
---|
[dc7884d] | 1200 | int zdot = 0; |
---|
[72ab15f] | 1201 | oe_excursion x; |
---|
[7d4fbcd] | 1202 | |
---|
| 1203 | if (!e->dotsend) return(0); |
---|
[72ab15f] | 1204 | if (e->index != e->bufflen) return (0); |
---|
[47519e1b] | 1205 | |
---|
[72ab15f] | 1206 | oe_save_excursion(e, &x); |
---|
| 1207 | |
---|
| 1208 | owl_editwin_point_move(e, -3); |
---|
| 1209 | |
---|
[dc7884d] | 1210 | if(strcmp(e->buff + e->index, "\n.\n") == 0) { |
---|
| 1211 | owl_editwin_point_move(e, 1); |
---|
| 1212 | zdot = 1; |
---|
[0509efc] | 1213 | } else if(e->index == e->lock && |
---|
| 1214 | strcmp(e->buff + e->index, ".\n") == 0) { |
---|
| 1215 | zdot = 1; |
---|
| 1216 | } |
---|
| 1217 | |
---|
| 1218 | if(zdot) { |
---|
| 1219 | owl_editwin_replace(e, 2, ""); |
---|
[dc7884d] | 1220 | } |
---|
[72ab15f] | 1221 | |
---|
| 1222 | oe_restore_excursion(e, &x); |
---|
| 1223 | |
---|
| 1224 | return zdot; |
---|
[7d4fbcd] | 1225 | } |
---|
| 1226 | |
---|
[fac5463] | 1227 | void owl_editwin_post_process_char(owl_editwin *e, owl_input j) |
---|
[c9334b1] | 1228 | { |
---|
[a556caa] | 1229 | /* XXX force a redisplay? */ |
---|
[fac5463] | 1230 | if ((j.ch==13 || j.ch==10) && owl_editwin_check_dotsend(e)) { |
---|
[435d6b2] | 1231 | owl_command_edit_done(e); |
---|
[7d4fbcd] | 1232 | return; |
---|
| 1233 | } |
---|
[e20d8179] | 1234 | owl_editwin_redisplay(e, 0); |
---|
[7d4fbcd] | 1235 | } |
---|
| 1236 | |
---|
[3e36085] | 1237 | static int oe_region_width(owl_editwin *e, int start, int end, int offset) |
---|
[16cfd12a] | 1238 | { |
---|
[e19eb97] | 1239 | const char *p; |
---|
[3e36085] | 1240 | int width = offset; |
---|
| 1241 | |
---|
[16cfd12a] | 1242 | for(p = e->buff + start; |
---|
| 1243 | p < e->buff + end; |
---|
| 1244 | p = g_utf8_find_next_char(p, NULL)) |
---|
| 1245 | width += oe_char_width(g_utf8_get_char(p), width); |
---|
| 1246 | |
---|
[3e36085] | 1247 | return width - offset; |
---|
[16cfd12a] | 1248 | } |
---|
| 1249 | |
---|
[ebf0128] | 1250 | static void oe_insert_char(owl_editwin *e, gunichar c) |
---|
[fac5463] | 1251 | { |
---|
[16cfd12a] | 1252 | oe_excursion x; |
---|
[5b5f3e6] | 1253 | char tmp[7]; |
---|
[16cfd12a] | 1254 | int replaced = -1; |
---|
[5b5f3e6] | 1255 | |
---|
[ebf0128] | 1256 | if (c == '\r') /* translate CRs to NLs */ |
---|
| 1257 | c = '\n'; |
---|
| 1258 | |
---|
[16cfd12a] | 1259 | if (!g_unichar_iscntrl(c) || c == '\n' || c== '\t' ) { |
---|
[ebf0128] | 1260 | memset(tmp, 0, 7); |
---|
| 1261 | |
---|
| 1262 | if (c == '\n' && e->style == OWL_EDITWIN_STYLE_ONELINE) { |
---|
| 1263 | return; |
---|
| 1264 | } |
---|
| 1265 | |
---|
[16cfd12a] | 1266 | if (e->cursorx != -1 && e->cursorx + oe_char_width(c, e->cursorx) > e->wrapcol) { |
---|
| 1267 | /* XXX this is actually wrong: |
---|
| 1268 | * + If the line has been been wrapped, we can be past the wrap column but |
---|
| 1269 | * e->cursorx be much smaller. |
---|
| 1270 | * + If the user went back and inserted a bunch of stuff in the middle of |
---|
| 1271 | * the line, there may be more than one word past the wrap column. |
---|
| 1272 | */ |
---|
| 1273 | oe_save_excursion(e, &x); |
---|
| 1274 | |
---|
| 1275 | if (c == ' ' || c == '\t') { |
---|
| 1276 | owl_editwin_point_move(e, -1); |
---|
| 1277 | replaced = -owl_editwin_move_if_in(e, -1, " \t"); |
---|
| 1278 | if (!replaced) { |
---|
| 1279 | c = '\n'; |
---|
| 1280 | replaced = -1; |
---|
| 1281 | } |
---|
| 1282 | } else { |
---|
| 1283 | while(!owl_editwin_at_beginning_of_line(e)) { |
---|
| 1284 | owl_editwin_point_move(e, -1); |
---|
| 1285 | if (owl_util_can_break_after(owl_editwin_get_char_at_point(e))) { |
---|
| 1286 | replaced = -owl_editwin_move_if_in(e, -1, " \t"); |
---|
| 1287 | break; |
---|
| 1288 | } |
---|
| 1289 | } |
---|
| 1290 | if (owl_editwin_at_beginning_of_line(e)) |
---|
| 1291 | replaced = -1; |
---|
| 1292 | } |
---|
| 1293 | if (replaced && !owl_editwin_at_beginning_of_line(e)) |
---|
| 1294 | owl_editwin_point_move(e, 1); |
---|
| 1295 | if (replaced >= 0) { |
---|
| 1296 | owl_editwin_replace(e, replaced, "\n"); |
---|
| 1297 | } |
---|
| 1298 | oe_restore_excursion(e, &x); |
---|
| 1299 | } |
---|
| 1300 | |
---|
| 1301 | if (replaced >= 0 && (c == ' ' || c == '\t')) |
---|
| 1302 | return; /* our work here is done */ |
---|
| 1303 | |
---|
[ebf0128] | 1304 | g_unichar_to_utf8(c, tmp); |
---|
| 1305 | owl_editwin_replace(e, 0, tmp); |
---|
| 1306 | } |
---|
| 1307 | } |
---|
| 1308 | |
---|
| 1309 | void owl_editwin_process_char(owl_editwin *e, owl_input j) |
---|
| 1310 | { |
---|
[5b5f3e6] | 1311 | if (j.ch == ERR) |
---|
| 1312 | return; |
---|
[fac5463] | 1313 | /* Ignore ncurses control characters. */ |
---|
[e20d8179] | 1314 | if (j.ch < 0x100) { |
---|
[ebf0128] | 1315 | oe_insert_char(e, j.uch); |
---|
[fac5463] | 1316 | } |
---|
| 1317 | } |
---|
| 1318 | |
---|
[e19eb97] | 1319 | const char *owl_editwin_get_text(owl_editwin *e) |
---|
[c9334b1] | 1320 | { |
---|
[7d4fbcd] | 1321 | return(e->buff+e->lock); |
---|
| 1322 | } |
---|
| 1323 | |
---|
[d41294a] | 1324 | char *owl_editwin_get_region(owl_editwin *e) |
---|
| 1325 | { |
---|
| 1326 | int start, end; |
---|
| 1327 | start = e->index; |
---|
| 1328 | end = e->mark; |
---|
| 1329 | if(start > end) { |
---|
| 1330 | int tmp = end; |
---|
| 1331 | end = start; |
---|
| 1332 | start = tmp; |
---|
| 1333 | } |
---|
| 1334 | |
---|
| 1335 | return oe_chunk(e, start, end); |
---|
| 1336 | } |
---|
| 1337 | |
---|
[77f605d] | 1338 | int owl_editwin_get_echochar(owl_editwin *e) |
---|
| 1339 | { |
---|
[a556caa] | 1340 | return e->echochar; |
---|
| 1341 | } |
---|
[77f605d] | 1342 | |
---|
| 1343 | static char *oe_chunk(owl_editwin *e, int start, int end) |
---|
| 1344 | { |
---|
| 1345 | char *p; |
---|
| 1346 | |
---|
| 1347 | p = owl_malloc(end - start + 1); |
---|
| 1348 | memcpy(p, e->buff + start, end - start); |
---|
| 1349 | p[end - start] = 0; |
---|
| 1350 | |
---|
| 1351 | return p; |
---|
| 1352 | } |
---|
| 1353 | |
---|
[d41294a] | 1354 | /* |
---|
| 1355 | * The only guarantee made about these values is that comparisons |
---|
| 1356 | * between them, as well as comparison between multiple calls to these |
---|
| 1357 | * functions without modifying the editwin in-between, are meaningful. |
---|
| 1358 | */ |
---|
| 1359 | |
---|
| 1360 | int owl_editwin_get_point(owl_editwin *e) |
---|
| 1361 | { |
---|
| 1362 | return e->index; |
---|
| 1363 | } |
---|
| 1364 | |
---|
| 1365 | int owl_editwin_get_mark(owl_editwin *e) |
---|
| 1366 | { |
---|
| 1367 | return e->mark; |
---|
| 1368 | } |
---|
| 1369 | |
---|
[2f21a41] | 1370 | |
---|
| 1371 | /* |
---|
| 1372 | * Local Variables: |
---|
| 1373 | * mode:C |
---|
| 1374 | * c-basic-offset:2 |
---|
| 1375 | * End: |
---|
| 1376 | */ |
---|