[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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[1aee7d9] | 7 | static const char fileIdent[] = "$Id$"; |
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| 8 | |
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[ebf0128] | 9 | #define VALID_EXCURSION (0x9a2b4729) |
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| 10 | |
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| 11 | typedef struct oe_excursion_struct { /*noproto*/ |
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| 12 | int valid; |
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| 13 | int index; |
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[16cfd12a] | 14 | int mark; |
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[ebf0128] | 15 | int goal_column; |
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| 16 | int lock; |
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| 17 | struct oe_excursion_struct *next; |
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| 18 | } oe_excursion; |
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| 19 | |
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[a556caa] | 20 | struct _owl_editwin { /*noproto*/ |
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| 21 | char *buff; |
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| 22 | owl_history *hist; |
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| 23 | int bufflen; |
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| 24 | int allocated; |
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| 25 | int index; |
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[16cfd12a] | 26 | int mark; |
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[a556caa] | 27 | int goal_column; |
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| 28 | int topindex; |
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[ebf0128] | 29 | int cursorx; |
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[a556caa] | 30 | int winlines, wincols, fillcol, wrapcol; |
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| 31 | WINDOW *curswin; |
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| 32 | int style; |
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| 33 | int lock; |
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| 34 | int dotsend; |
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| 35 | int echochar; |
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[ebf0128] | 36 | oe_excursion *excursions; |
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[a556caa] | 37 | |
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| 38 | char *command; |
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| 39 | void (*callback)(struct _owl_editwin*); |
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| 40 | void *cbdata; |
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| 41 | }; |
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| 42 | |
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| 43 | |
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[e20d8179] | 44 | static void oe_reframe(owl_editwin *e); |
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[bab52da] | 45 | static void oe_save_excursion(owl_editwin *e, oe_excursion *x); |
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[ebf0128] | 46 | static void oe_release_excursion(owl_editwin *e, oe_excursion *x); |
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[bab52da] | 47 | static void oe_restore_excursion(owl_editwin *e, oe_excursion *x); |
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[ebf0128] | 48 | static int oe_count_glyphs(char *s); |
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| 49 | static int oe_char_width(gunichar c, int column); |
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[16cfd12a] | 50 | static int oe_region_width(owl_editwin *e, int start, int end, int width); |
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[bab52da] | 51 | static int oe_find_display_line(owl_editwin *e, int *x, int index); |
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[ebf0128] | 52 | static void oe_insert_char(owl_editwin *e, gunichar c); |
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[bab52da] | 53 | static int owl_editwin_limit_maxcols(int v, int maxv); |
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| 54 | static int owl_editwin_check_dotsend(owl_editwin *e); |
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| 55 | static int owl_editwin_is_char_in(owl_editwin *e, char *set); |
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| 56 | static gunichar owl_editwin_get_char_at_point(owl_editwin *e); |
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[ebf0128] | 57 | static int owl_editwin_replace(owl_editwin *e, int count, char *s); |
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[bab52da] | 58 | |
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[5b5f3e6] | 59 | #define INCR 4096 |
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[7d4fbcd] | 60 | |
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[a556caa] | 61 | #define WHITESPACE " \n\t" |
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| 62 | |
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[bab52da] | 63 | owl_editwin *owl_editwin_allocate(void) |
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| 64 | { |
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[8321cb7] | 65 | owl_editwin *e; |
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| 66 | e = owl_malloc(sizeof(owl_editwin)); |
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| 67 | memset(e, 0, sizeof(*e)); |
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| 68 | return e; |
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[a556caa] | 69 | } |
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| 70 | |
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[5b5f3e6] | 71 | static int oe_count_glyphs(char *s) |
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| 72 | { |
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| 73 | int count = 0; |
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| 74 | char *p; |
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| 75 | |
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| 76 | for(p = s; *p != 0; p = g_utf8_find_next_char(p, NULL)) |
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| 77 | if (!g_unichar_ismark(g_utf8_get_char(p))) |
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| 78 | count++; |
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| 79 | |
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| 80 | return count; |
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| 81 | } |
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| 82 | |
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[bab52da] | 83 | static inline void oe_set_index(owl_editwin *e, int index) |
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| 84 | { |
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[ebf0128] | 85 | if (index != e->index) { |
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| 86 | e->goal_column = -1; |
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| 87 | e->cursorx = -1; |
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| 88 | } |
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[521bc84] | 89 | e->index = index; |
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| 90 | } |
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| 91 | |
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[cf83b7a] | 92 | /* initialize the editwin e. |
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| 93 | * 'win' is an already initialzed curses window that will be used by editwin |
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| 94 | */ |
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[c9334b1] | 95 | void owl_editwin_init(owl_editwin *e, WINDOW *win, int winlines, int wincols, int style, owl_history *hist) |
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| 96 | { |
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[e20d8179] | 97 | e->buff=owl_malloc(INCR); |
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[7d4fbcd] | 98 | e->buff[0]='\0'; |
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| 99 | e->bufflen=0; |
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[10b866d] | 100 | e->hist=hist; |
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[7d4fbcd] | 101 | e->allocated=INCR; |
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[521bc84] | 102 | oe_set_index(e, 0); |
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[16cfd12a] | 103 | e->mark = 0; |
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[a556caa] | 104 | e->goal_column = -1; |
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[ebf0128] | 105 | e->cursorx = -1; |
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| 106 | e->topindex = 0; |
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| 107 | e->excursions = NULL; |
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| 108 | owl_editwin_set_curswin(e, win, winlines, wincols); |
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[7d4fbcd] | 109 | e->style=style; |
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| 110 | if ((style!=OWL_EDITWIN_STYLE_MULTILINE) && |
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| 111 | (style!=OWL_EDITWIN_STYLE_ONELINE)) { |
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| 112 | e->style=OWL_EDITWIN_STYLE_MULTILINE; |
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| 113 | } |
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| 114 | e->lock=0; |
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| 115 | e->dotsend=0; |
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[c9334b1] | 116 | e->echochar='\0'; |
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[e74c01c] | 117 | |
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[af1920fd] | 118 | /* We get initialized multiple times, but we need to hold on to |
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| 119 | the callbacks, so we can't NULL them here. */ |
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[e74c01c] | 120 | /* |
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| 121 | e->command = NULL; |
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| 122 | e->callback = NULL; |
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| 123 | e->cbdata = NULL; |
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| 124 | */ |
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[7d4fbcd] | 125 | if (win) werase(win); |
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| 126 | } |
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| 127 | |
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[c9334b1] | 128 | void owl_editwin_set_curswin(owl_editwin *e, WINDOW *w, int winlines, int wincols) |
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| 129 | { |
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[7d4fbcd] | 130 | e->curswin=w; |
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| 131 | e->winlines=winlines; |
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| 132 | e->wincols=wincols; |
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[9a6cc40] | 133 | e->fillcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxfillcols(&g)); |
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| 134 | e->wrapcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxwrapcols(&g)); |
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[7d4fbcd] | 135 | } |
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| 136 | |
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[c9334b1] | 137 | /* echo the character 'ch' for each normal character keystroke, |
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| 138 | * excepting locktext. This is useful for entering passwords etc. If |
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| 139 | * ch=='\0' characters are echo'd normally |
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| 140 | */ |
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| 141 | void owl_editwin_set_echochar(owl_editwin *e, int ch) |
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| 142 | { |
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| 143 | e->echochar=ch; |
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| 144 | } |
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| 145 | |
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| 146 | WINDOW *owl_editwin_get_curswin(owl_editwin *e) |
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| 147 | { |
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[060b3b4] | 148 | return(e->curswin); |
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[7d4fbcd] | 149 | } |
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| 150 | |
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[c9334b1] | 151 | owl_history *owl_editwin_get_history(owl_editwin *e) |
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| 152 | { |
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[060b3b4] | 153 | return(e->hist); |
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[10b866d] | 154 | } |
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| 155 | |
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[c9334b1] | 156 | void owl_editwin_set_dotsend(owl_editwin *e) |
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| 157 | { |
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[7d4fbcd] | 158 | e->dotsend=1; |
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| 159 | } |
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| 160 | |
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[bab52da] | 161 | void owl_editwin_set_command(owl_editwin *e, char *command) |
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| 162 | { |
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[e74c01c] | 163 | if(e->command) owl_free(e->command); |
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| 164 | e->command = owl_strdup(command); |
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| 165 | } |
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| 166 | |
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[bab52da] | 167 | char *owl_editwin_get_command(owl_editwin *e) |
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| 168 | { |
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[e74c01c] | 169 | if(e->command) return e->command; |
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| 170 | return ""; |
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| 171 | } |
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| 172 | |
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[bab52da] | 173 | void owl_editwin_set_callback(owl_editwin *e, void (*cb)(owl_editwin*)) |
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| 174 | { |
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[e74c01c] | 175 | e->callback = cb; |
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| 176 | } |
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| 177 | |
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[bab52da] | 178 | void (*owl_editwin_get_callback(owl_editwin *e))(owl_editwin*) |
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| 179 | { |
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[e74c01c] | 180 | return e->callback; |
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| 181 | } |
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| 182 | |
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[bab52da] | 183 | void owl_editwin_set_cbdata(owl_editwin *e, void *data) |
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| 184 | { |
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[e74c01c] | 185 | e->cbdata = data; |
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| 186 | } |
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| 187 | |
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[a556caa] | 188 | void *owl_editwin_get_cbdata(owl_editwin *e) { |
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[e74c01c] | 189 | return e->cbdata; |
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| 190 | } |
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| 191 | |
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| 192 | void owl_editwin_do_callback(owl_editwin *e) { |
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| 193 | void (*cb)(owl_editwin*); |
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| 194 | cb=owl_editwin_get_callback(e); |
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| 195 | if(!cb) { |
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| 196 | owl_function_error("Internal error: No editwin callback!"); |
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| 197 | } else { |
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[af1920fd] | 198 | /* owl_function_error("text: |%s|", owl_editwin_get_text(e)); */ |
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[e74c01c] | 199 | cb(e); |
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| 200 | } |
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| 201 | } |
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| 202 | |
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[bab52da] | 203 | static int owl_editwin_limit_maxcols(int v, int maxv) |
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[c9334b1] | 204 | { |
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[ebf0128] | 205 | /* maxv > 5 ? MAX(v, vax) : v */ |
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[d36f2cb] | 206 | if (maxv > 5 && v > maxv) { |
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[060b3b4] | 207 | return(maxv); |
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[d36f2cb] | 208 | } else { |
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[060b3b4] | 209 | return(v); |
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[d36f2cb] | 210 | } |
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| 211 | } |
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| 212 | |
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[c9334b1] | 213 | /* set text to be 'locked in' at the beginning of the buffer, any |
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| 214 | * previous text (including locked text) will be overwritten |
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| 215 | */ |
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| 216 | void owl_editwin_set_locktext(owl_editwin *e, char *text) |
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| 217 | { |
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[521bc84] | 218 | oe_set_index(e, 0); |
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[5b5f3e6] | 219 | e->lock = 0; |
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| 220 | owl_editwin_replace(e, e->bufflen, text); |
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| 221 | e->buff[e->bufflen] = 0; |
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| 222 | e->lock=e->bufflen; |
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[521bc84] | 223 | oe_set_index(e, e->lock); |
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[7d4fbcd] | 224 | owl_editwin_redisplay(e, 0); |
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| 225 | } |
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| 226 | |
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[c9334b1] | 227 | int owl_editwin_get_style(owl_editwin *e) |
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| 228 | { |
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[7d4fbcd] | 229 | return(e->style); |
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| 230 | } |
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| 231 | |
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[c9334b1] | 232 | void owl_editwin_new_style(owl_editwin *e, int newstyle, owl_history *h) |
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| 233 | { |
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[98f1e69] | 234 | e->hist = h; |
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| 235 | |
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[7d4fbcd] | 236 | if (e->style==newstyle) return; |
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| 237 | |
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| 238 | if (newstyle==OWL_EDITWIN_STYLE_MULTILINE) { |
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| 239 | e->style=newstyle; |
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| 240 | } else if (newstyle==OWL_EDITWIN_STYLE_ONELINE) { |
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| 241 | e->style=newstyle; |
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| 242 | |
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| 243 | /* nuke everything after the first line */ |
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[5b5f3e6] | 244 | owl_editwin_move_to_top(e); |
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| 245 | owl_editwin_move_to_end_of_line(e); |
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| 246 | owl_editwin_replace(e, oe_count_glyphs(e->buff + e->index), ""); |
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[7d4fbcd] | 247 | } |
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| 248 | } |
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| 249 | |
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[c9334b1] | 250 | /* completly reinitialize the buffer */ |
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| 251 | void owl_editwin_fullclear(owl_editwin *e) |
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| 252 | { |
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[7d4fbcd] | 253 | owl_free(e->buff); |
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[10b866d] | 254 | owl_editwin_init(e, e->curswin, e->winlines, e->wincols, e->style, e->hist); |
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[7d4fbcd] | 255 | } |
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| 256 | |
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[c9334b1] | 257 | /* clear all text except for locktext and put the cursor at the |
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| 258 | * beginning |
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| 259 | */ |
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| 260 | void owl_editwin_clear(owl_editwin *e) |
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| 261 | { |
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| 262 | |
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[6073462] | 263 | int lock = e->lock; |
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[10b866d] | 264 | int dotsend=e->dotsend; |
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[7d4fbcd] | 265 | char *locktext=NULL; |
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[cc6f009] | 266 | char echochar=e->echochar; |
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[10b866d] | 267 | |
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[6073462] | 268 | if (lock > 0) { |
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[5b5f3e6] | 269 | locktext = owl_malloc(lock+1); |
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| 270 | strncpy(locktext, e->buff, lock); |
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| 271 | locktext[lock] = 0; |
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[7d4fbcd] | 272 | } |
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| 273 | |
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| 274 | owl_free(e->buff); |
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[10b866d] | 275 | owl_editwin_init(e, e->curswin, e->winlines, e->wincols, e->style, e->hist); |
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[7d4fbcd] | 276 | |
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| 277 | if (lock > 0) { |
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| 278 | owl_editwin_set_locktext(e, locktext); |
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| 279 | } |
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[10b866d] | 280 | if (dotsend) { |
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| 281 | owl_editwin_set_dotsend(e); |
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| 282 | } |
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[cc6f009] | 283 | if (echochar) { |
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| 284 | owl_editwin_set_echochar(e, echochar); |
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| 285 | } |
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[7d4fbcd] | 286 | |
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[5b5f3e6] | 287 | if (locktext) |
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| 288 | owl_free(locktext); |
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[6073462] | 289 | |
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[521bc84] | 290 | oe_set_index(e, lock); |
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[7d4fbcd] | 291 | } |
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| 292 | |
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[c9334b1] | 293 | void owl_editwin_recenter(owl_editwin *e) |
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| 294 | { |
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[a556caa] | 295 | e->topindex = -1; |
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| 296 | } |
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[e20d8179] | 297 | |
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[a0fbdee] | 298 | static void oe_save_excursion(owl_editwin *e, oe_excursion *x) |
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| 299 | { |
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| 300 | x->index = e->index; |
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| 301 | x->goal_column = e->goal_column; |
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| 302 | x->lock = e->lock; |
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[ebf0128] | 303 | |
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| 304 | x->valid = VALID_EXCURSION; |
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| 305 | x->next = e->excursions; |
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| 306 | e->excursions = x; |
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| 307 | } |
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| 308 | |
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| 309 | static void oe_release_excursion(owl_editwin *e, oe_excursion *x) |
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| 310 | { |
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| 311 | oe_excursion *p; |
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| 312 | |
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| 313 | x->valid = 0; |
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| 314 | if (e->excursions == NULL) |
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| 315 | /* XXX huh. */ ; |
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| 316 | else if (e->excursions == x) |
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| 317 | e->excursions = x->next; |
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| 318 | else { |
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| 319 | for (p = e->excursions; p->next != NULL; p = p->next) |
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| 320 | if (p->next == x) { |
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| 321 | p->next = p->next->next; |
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| 322 | break; |
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| 323 | } |
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| 324 | /* and if we ran off the end? XXX */ |
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| 325 | } |
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[a0fbdee] | 326 | } |
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| 327 | |
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| 328 | static void oe_restore_excursion(owl_editwin *e, oe_excursion *x) |
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| 329 | { |
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[ebf0128] | 330 | if (x->valid == VALID_EXCURSION) { |
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| 331 | oe_set_index(e, x->index); |
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| 332 | e->goal_column = x->goal_column; |
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| 333 | e->lock = x->lock; |
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| 334 | |
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| 335 | oe_release_excursion(e, x); |
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| 336 | } |
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[a0fbdee] | 337 | } |
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| 338 | |
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[e20d8179] | 339 | static inline char *oe_next_point(owl_editwin *e, char *p) |
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| 340 | { |
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| 341 | char *boundary = e->buff + e->bufflen + 1; |
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| 342 | char *q; |
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| 343 | |
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| 344 | q = g_utf8_find_next_char(p, boundary); |
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| 345 | while (q && g_unichar_ismark(g_utf8_get_char(q))) |
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| 346 | q = g_utf8_find_next_char(q, boundary); |
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| 347 | |
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| 348 | if (q == p) |
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| 349 | return NULL; |
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| 350 | return q; |
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| 351 | } |
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| 352 | |
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| 353 | static inline char *oe_prev_point(owl_editwin *e, char *p) |
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| 354 | { |
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| 355 | char *boundary = e->buff + e->lock; |
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| 356 | |
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| 357 | p = g_utf8_find_prev_char(boundary, p); |
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| 358 | while (p && g_unichar_ismark(g_utf8_get_char(p))) |
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| 359 | p = g_utf8_find_prev_char(boundary, p); |
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| 360 | |
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| 361 | return p; |
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| 362 | } |
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| 363 | |
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[ebf0128] | 364 | static int oe_char_width(gunichar c, int column) |
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| 365 | { |
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| 366 | int cw; |
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| 367 | |
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| 368 | if (c == 9) /* TAB */ |
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| 369 | return TABSIZE - column % TABSIZE; |
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| 370 | |
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| 371 | cw = mk_wcwidth(c); |
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| 372 | |
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| 373 | if (cw < 0) /* control characters */ |
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| 374 | cw = 0; |
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| 375 | |
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| 376 | return cw; |
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| 377 | } |
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| 378 | |
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[19f765d] | 379 | static int oe_find_display_line(owl_editwin *e, int *x, int index) |
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| 380 | { |
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| 381 | int width = 0, cw; |
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[ebf0128] | 382 | gunichar c; |
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[19f765d] | 383 | char *p; |
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| 384 | |
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[77d4402] | 385 | while(1) { |
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| 386 | /* note the position of the dot */ |
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[2021bea] | 387 | if (x != NULL && index == e->index && width < e->wincols) |
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[19f765d] | 388 | *x = width; |
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[77d4402] | 389 | |
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[19f765d] | 390 | /* get the current character */ |
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| 391 | c = g_utf8_get_char(e->buff + index); |
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| 392 | |
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| 393 | /* figure out how wide it is */ |
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[ebf0128] | 394 | cw = oe_char_width(c, width); |
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[19f765d] | 395 | |
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[77d4402] | 396 | if (width + cw > e->wincols) { |
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| 397 | if (x != NULL && *x == width) |
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| 398 | *x = -1; |
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[19f765d] | 399 | break; |
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[77d4402] | 400 | } |
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[19f765d] | 401 | width += cw; |
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| 402 | |
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| 403 | if (c == '\n') { |
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[77d4402] | 404 | if (width < e->wincols) |
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| 405 | ++index; /* skip the newline */ |
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[19f765d] | 406 | break; |
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| 407 | } |
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| 408 | |
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| 409 | /* find the next character */ |
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| 410 | p = oe_next_point(e, e->buff + index); |
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| 411 | if (p == NULL) { /* we ran off the end */ |
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| 412 | if (x != NULL && e->index > index) |
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| 413 | *x = width + 1; |
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| 414 | break; |
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| 415 | } |
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| 416 | index = p - e->buff; |
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[cedc95c] | 417 | |
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[19f765d] | 418 | } |
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| 419 | return index; |
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| 420 | } |
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| 421 | |
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[e20d8179] | 422 | static void oe_reframe(owl_editwin *e) { |
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[cedc95c] | 423 | oe_excursion x; |
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| 424 | int goal = e->winlines / 2; |
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| 425 | int index; |
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| 426 | int count = 0; |
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| 427 | int point; |
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| 428 | int n, i; |
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| 429 | int last; |
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| 430 | |
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| 431 | oe_save_excursion(e, &x); |
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| 432 | /* step back line-by-line through the buffer until we have >= goal lines of |
---|
| 433 | display text */ |
---|
| 434 | e->lock = 0; /* we can (must) tread on the locktext */ |
---|
| 435 | |
---|
| 436 | point = e->index; |
---|
| 437 | last = -1; |
---|
| 438 | while (count < goal) { |
---|
| 439 | index = e->index; |
---|
| 440 | owl_editwin_move_to_beginning_of_line(e); |
---|
| 441 | if (last == e->index) |
---|
| 442 | break; |
---|
| 443 | last = e->index; |
---|
| 444 | for (n = 0, i = e->index; i < index; n++) |
---|
| 445 | i = oe_find_display_line(e, NULL, i); |
---|
| 446 | count += n == 0 ? 1 : n; |
---|
| 447 | if (count < goal) |
---|
| 448 | owl_editwin_point_move(e, -1); |
---|
| 449 | } |
---|
| 450 | |
---|
| 451 | e->topindex = e->index; |
---|
[521bc84] | 452 | /* if we overshot, backtrack */ |
---|
| 453 | for (n = 0; n < (count - goal); n++) |
---|
| 454 | e->topindex = oe_find_display_line(e, NULL, e->topindex); |
---|
[cedc95c] | 455 | |
---|
| 456 | oe_restore_excursion(e, &x); |
---|
[7d4fbcd] | 457 | } |
---|
| 458 | |
---|
[c9334b1] | 459 | /* regenerate the text on the curses window */ |
---|
| 460 | /* if update == 1 then do a doupdate(), otherwise do not */ |
---|
| 461 | void owl_editwin_redisplay(owl_editwin *e, int update) |
---|
| 462 | { |
---|
[19f765d] | 463 | int x = -1, y = -1, t; |
---|
[77d4402] | 464 | int line, index, lineindex, times = 0; |
---|
[7d4fbcd] | 465 | |
---|
[bd1a1ae] | 466 | do { |
---|
[cedc95c] | 467 | werase(e->curswin); |
---|
| 468 | |
---|
[bd1a1ae] | 469 | if (e->topindex == -1 || e->index < e->topindex) |
---|
[e20d8179] | 470 | oe_reframe(e); |
---|
| 471 | |
---|
[bd1a1ae] | 472 | line = 0; |
---|
| 473 | index = e->topindex; |
---|
| 474 | while(line < e->winlines) { |
---|
| 475 | lineindex = index; |
---|
[19f765d] | 476 | t = -1; |
---|
| 477 | index = oe_find_display_line(e, &t, lineindex); |
---|
| 478 | if (x == -1 && t != -1) |
---|
| 479 | x = t, y = line; |
---|
[bd1a1ae] | 480 | if (index - lineindex) |
---|
| 481 | mvwaddnstr(e->curswin, line, 0, |
---|
| 482 | e->buff + lineindex, |
---|
| 483 | index - lineindex); |
---|
| 484 | line++; |
---|
[a556caa] | 485 | } |
---|
[19f765d] | 486 | if (x == -1) |
---|
[bd1a1ae] | 487 | e->topindex = -1; /* force a reframe */ |
---|
[77d4402] | 488 | times++; |
---|
| 489 | } while(x == -1 && times < 3); |
---|
[e20d8179] | 490 | |
---|
[19f765d] | 491 | wmove(e->curswin, y, x); |
---|
[ebf0128] | 492 | e->cursorx = x; |
---|
| 493 | |
---|
[7d4fbcd] | 494 | wnoutrefresh(e->curswin); |
---|
[a556caa] | 495 | if (update == 1) |
---|
[7d4fbcd] | 496 | doupdate(); |
---|
| 497 | } |
---|
| 498 | |
---|
[ebf0128] | 499 | /* replace count characters at the point with s, returning the change in size */ |
---|
| 500 | static int owl_editwin_replace(owl_editwin *e, int replace, char *s) |
---|
| 501 | { |
---|
| 502 | int start, end, i, free, need, size, change; |
---|
[5b5f3e6] | 503 | char *p; |
---|
[ebf0128] | 504 | oe_excursion *x; |
---|
[e9bb404] | 505 | |
---|
[5b5f3e6] | 506 | if (!g_utf8_validate(s, -1, NULL)) { |
---|
| 507 | owl_function_debugmsg("owl_editwin_insert_string: received non-utf-8 string."); |
---|
[ebf0128] | 508 | return 0; |
---|
[47519e1b] | 509 | } |
---|
| 510 | |
---|
[5b5f3e6] | 511 | start = e->index; |
---|
| 512 | for (i = 0, p = e->buff + start; i < replace && p != NULL; i++) |
---|
| 513 | p = oe_next_point(e, p); |
---|
| 514 | if (p != NULL) |
---|
| 515 | end = p - e->buff; |
---|
| 516 | else |
---|
| 517 | end = e->bufflen; |
---|
| 518 | |
---|
| 519 | free = e->allocated - e->bufflen + end - start; |
---|
| 520 | |
---|
| 521 | need = strlen(s) - free; |
---|
| 522 | if (need > 0) { |
---|
| 523 | size = e->allocated + need + INCR - (need % INCR); |
---|
| 524 | p = realloc(e->buff, size); |
---|
| 525 | if (p == NULL) { |
---|
| 526 | /* XXX signal impending doom somehow and don't do anything */ |
---|
[ebf0128] | 527 | return 0; |
---|
[e9bb404] | 528 | } |
---|
[5b5f3e6] | 529 | e->buff = p; |
---|
| 530 | e->allocated = size; |
---|
[47519e1b] | 531 | } |
---|
[e9bb404] | 532 | |
---|
[5b5f3e6] | 533 | memmove(e->buff + start + strlen(s), e->buff + end, e->bufflen + 1 - end); |
---|
| 534 | memcpy(e->buff + start, s, strlen(s)); |
---|
[ebf0128] | 535 | change = start - end + strlen(s); |
---|
| 536 | e->bufflen += change; |
---|
[5b5f3e6] | 537 | e->index += strlen(s); |
---|
[ebf0128] | 538 | |
---|
| 539 | /* fix up any saved points after the replaced area */ |
---|
| 540 | for (x = e->excursions; x != NULL; x = x->next) |
---|
| 541 | if (x->index > start) { |
---|
| 542 | if (x->index < end) |
---|
| 543 | x->index = end; |
---|
| 544 | else |
---|
| 545 | x->index += change; |
---|
| 546 | } |
---|
| 547 | |
---|
| 548 | return change; |
---|
[47519e1b] | 549 | } |
---|
| 550 | |
---|
[5b5f3e6] | 551 | #if 0 /*XXX*/ |
---|
[c9334b1] | 552 | /* linewrap the word just before the cursor. |
---|
| 553 | * returns 0 on success |
---|
| 554 | * returns -1 if we could not wrap. |
---|
| 555 | */ |
---|
[5b5f3e6] | 556 | static int _owl_editwin_linewrap_word(owl_editwin *e) |
---|
[c9334b1] | 557 | { |
---|
[84027015] | 558 | int i; |
---|
| 559 | char *ptr1, *start; |
---|
| 560 | gunichar c; |
---|
[7d4fbcd] | 561 | |
---|
[84027015] | 562 | start = e->buff + e->lock; |
---|
| 563 | |
---|
[a556caa] | 564 | ptr1 = e->buff + e->index; |
---|
[84027015] | 565 | ptr1 = g_utf8_find_prev_char(start, ptr1); |
---|
| 566 | |
---|
| 567 | while (ptr1) { |
---|
| 568 | c = g_utf8_get_char(ptr1); |
---|
| 569 | if (owl_util_can_break_after(c)) { |
---|
| 570 | if (c != ' ') { |
---|
| 571 | i = ptr1 - e->buff; |
---|
[521bc84] | 572 | oe_set_index(e, i); |
---|
[b2c1bd4] | 573 | _owl_editwin_insert_bytes(e, 1); |
---|
| 574 | /* _owl_editwin_insert_bytes may move e->buff. */ |
---|
[84027015] | 575 | ptr1 = e->buff + i; |
---|
| 576 | } |
---|
| 577 | *ptr1 = '\n'; |
---|
| 578 | return 0; |
---|
[7d4fbcd] | 579 | } |
---|
[2d4ff14] | 580 | else if (c == '\n') { |
---|
| 581 | return 0; |
---|
| 582 | } |
---|
[84027015] | 583 | ptr1 = g_utf8_find_prev_char(start, ptr1); |
---|
[7d4fbcd] | 584 | } |
---|
[84027015] | 585 | return -1; |
---|
[7d4fbcd] | 586 | } |
---|
[a556caa] | 587 | #endif |
---|
[7d4fbcd] | 588 | |
---|
[c9334b1] | 589 | /* delete the character at the current point, following chars |
---|
| 590 | * shift left. |
---|
[e20d8179] | 591 | */ |
---|
[c9334b1] | 592 | void owl_editwin_delete_char(owl_editwin *e) |
---|
| 593 | { |
---|
[5b5f3e6] | 594 | owl_editwin_replace(e, 1, ""); |
---|
[7d4fbcd] | 595 | } |
---|
| 596 | |
---|
[c9334b1] | 597 | /* Swap the character at point with the character at point-1 and |
---|
| 598 | * advance the pointer. If point is at beginning of buffer do |
---|
| 599 | * nothing. If point is after the last character swap point-1 with |
---|
[e20d8179] | 600 | * point-2. (Behaves as observed in tcsh and emacs). |
---|
[c9334b1] | 601 | */ |
---|
| 602 | void owl_editwin_transpose_chars(owl_editwin *e) |
---|
| 603 | { |
---|
[5b5f3e6] | 604 | char *middle, *end, *start, *tmp; |
---|
[f2e36b5] | 605 | |
---|
[47519e1b] | 606 | if (e->bufflen == 0) return; |
---|
[e20d8179] | 607 | |
---|
[5b5f3e6] | 608 | if (e->index == e->bufflen) |
---|
| 609 | owl_editwin_point_move(e, -1); /* point is after last character */ |
---|
[f2e36b5] | 610 | |
---|
[5b5f3e6] | 611 | if (owl_editwin_at_beginning_of_buffer(e)) |
---|
| 612 | return; /* point is at beginning of buffer, do nothing */ |
---|
[f2e36b5] | 613 | |
---|
[47519e1b] | 614 | /* Transpose two utf-8 unicode glyphs. */ |
---|
[5b5f3e6] | 615 | middle = e->buff + e->index; |
---|
[47519e1b] | 616 | |
---|
[5b5f3e6] | 617 | end = oe_next_point(e, middle); |
---|
| 618 | if (end == NULL) |
---|
[e20d8179] | 619 | return; |
---|
[47519e1b] | 620 | |
---|
[5b5f3e6] | 621 | start = oe_prev_point(e, middle); |
---|
| 622 | if (start == NULL) |
---|
[e20d8179] | 623 | return; |
---|
[47519e1b] | 624 | |
---|
[5b5f3e6] | 625 | tmp = owl_malloc((end - start) + 1); |
---|
| 626 | tmp[(end - start)] = 0; |
---|
| 627 | memcpy(tmp, middle, end - middle); |
---|
| 628 | memcpy(tmp + (end - middle), start, middle - start); |
---|
| 629 | |
---|
| 630 | owl_editwin_point_move(e, -1); |
---|
| 631 | owl_editwin_replace(e, 2, tmp); |
---|
[f2e36b5] | 632 | } |
---|
| 633 | |
---|
[c9334b1] | 634 | /* insert 'string' at the current point, later text is shifted |
---|
| 635 | * right |
---|
| 636 | */ |
---|
[5b5f3e6] | 637 | void owl_editwin_insert_string(owl_editwin *e, char *s) |
---|
[c9334b1] | 638 | { |
---|
[5b5f3e6] | 639 | owl_editwin_replace(e, 0, s); |
---|
[7d4fbcd] | 640 | } |
---|
| 641 | |
---|
[a556caa] | 642 | /* We assume index is not set to point to a mid-char */ |
---|
[bab52da] | 643 | static gunichar owl_editwin_get_char_at_point(owl_editwin *e) |
---|
[c9334b1] | 644 | { |
---|
[a556caa] | 645 | return g_utf8_get_char(e->buff + e->index); |
---|
| 646 | } |
---|
[7d4fbcd] | 647 | |
---|
[e20d8179] | 648 | int owl_editwin_point_move(owl_editwin *e, int delta) |
---|
[84027015] | 649 | { |
---|
[e20d8179] | 650 | char *p; |
---|
[19f765d] | 651 | int change, d = 0; |
---|
[a556caa] | 652 | |
---|
| 653 | change = MAX(delta, - delta); |
---|
| 654 | p = e->buff + e->index; |
---|
| 655 | |
---|
| 656 | while (d < change && p != NULL) { |
---|
[e20d8179] | 657 | if (delta > 0) |
---|
| 658 | p = oe_next_point(e, p); |
---|
| 659 | else |
---|
| 660 | p = oe_prev_point(e, p); |
---|
| 661 | if (p != NULL) { |
---|
[521bc84] | 662 | oe_set_index(e, p - e->buff); |
---|
[e20d8179] | 663 | d++; |
---|
[a556caa] | 664 | } |
---|
| 665 | } |
---|
| 666 | |
---|
| 667 | return delta > 0 ? d : -d; |
---|
[84027015] | 668 | } |
---|
| 669 | |
---|
[a556caa] | 670 | int owl_editwin_at_beginning_of_buffer(owl_editwin *e) { |
---|
| 671 | if (e->index == e->lock) |
---|
| 672 | return 1; |
---|
[84027015] | 673 | |
---|
[a556caa] | 674 | return 0; |
---|
| 675 | } |
---|
| 676 | |
---|
| 677 | int owl_at_end_of_buffer(owl_editwin *e) { |
---|
| 678 | if (e->index == e->bufflen) |
---|
| 679 | return 1; |
---|
| 680 | |
---|
| 681 | return 0; |
---|
| 682 | } |
---|
| 683 | |
---|
| 684 | int owl_editwin_at_beginning_of_line(owl_editwin *e) /*noproto*/ |
---|
[c9334b1] | 685 | { |
---|
[a0fbdee] | 686 | oe_excursion x; |
---|
[a556caa] | 687 | int ret; |
---|
[47519e1b] | 688 | |
---|
[a556caa] | 689 | if (owl_editwin_at_beginning_of_buffer(e)) |
---|
| 690 | return 1; |
---|
[47519e1b] | 691 | |
---|
[a0fbdee] | 692 | oe_save_excursion(e, &x); |
---|
[a556caa] | 693 | owl_editwin_point_move(e, -1); |
---|
[bab52da] | 694 | ret = (owl_editwin_get_char_at_point(e) == '\n'); |
---|
[a0fbdee] | 695 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 696 | |
---|
| 697 | return ret; |
---|
| 698 | } |
---|
| 699 | |
---|
[e20d8179] | 700 | static int owl_editwin_is_char_in(owl_editwin *e, char *set) |
---|
[a556caa] | 701 | { |
---|
| 702 | char *p; |
---|
[5b5f3e6] | 703 | |
---|
| 704 | for (p = set; *p != 0; p = g_utf8_find_next_char(p, NULL)) |
---|
| 705 | if (owl_editwin_get_char_at_point(e) == g_utf8_get_char(p)) |
---|
[a556caa] | 706 | return 1; |
---|
| 707 | return 0; |
---|
| 708 | } |
---|
| 709 | |
---|
[e20d8179] | 710 | int owl_editwin_move_if_in(owl_editwin *e, int delta, char *set) |
---|
[a556caa] | 711 | { |
---|
| 712 | int change, distance = 0; |
---|
[e20d8179] | 713 | while (owl_editwin_is_char_in(e, set)) { |
---|
[a556caa] | 714 | change = owl_editwin_point_move(e, delta); |
---|
| 715 | distance += change; |
---|
| 716 | if (change == 0) |
---|
| 717 | break; |
---|
[47519e1b] | 718 | } |
---|
[a556caa] | 719 | return distance; |
---|
| 720 | } |
---|
| 721 | |
---|
[e20d8179] | 722 | int owl_editwin_move_if_not_in(owl_editwin *e, int delta, char *set) |
---|
[a556caa] | 723 | { |
---|
| 724 | int change, distance = 0; |
---|
[e20d8179] | 725 | while (!owl_editwin_is_char_in(e, set)) { |
---|
[a556caa] | 726 | change = owl_editwin_point_move(e, delta); |
---|
| 727 | distance += change; |
---|
| 728 | if (change == 0) |
---|
| 729 | break; |
---|
[7d4fbcd] | 730 | } |
---|
[a556caa] | 731 | return distance; |
---|
[7d4fbcd] | 732 | } |
---|
| 733 | |
---|
[e20d8179] | 734 | int owl_editwin_move_to_beginning_of_line(owl_editwin *e) |
---|
[47519e1b] | 735 | { |
---|
[a556caa] | 736 | int distance = 0; |
---|
[47519e1b] | 737 | |
---|
[a556caa] | 738 | if (!owl_editwin_at_beginning_of_line(e)) { |
---|
| 739 | /* move off the \n if were at the end of a line */ |
---|
| 740 | distance += owl_editwin_point_move(e, -1); |
---|
| 741 | distance += owl_editwin_move_if_not_in(e, -1, "\n"); |
---|
| 742 | if (distance && !owl_editwin_at_beginning_of_buffer(e)) |
---|
| 743 | distance += owl_editwin_point_move(e, 1); |
---|
[47519e1b] | 744 | } |
---|
[77d4402] | 745 | e->goal_column = 0; /* subtleties */ |
---|
[84027015] | 746 | |
---|
[a556caa] | 747 | return distance; |
---|
| 748 | } |
---|
[e20d8179] | 749 | |
---|
| 750 | int owl_editwin_move_to_end_of_line(owl_editwin *e) |
---|
[a556caa] | 751 | { |
---|
| 752 | return owl_editwin_move_if_not_in(e, 1, "\n"); |
---|
[47519e1b] | 753 | } |
---|
| 754 | |
---|
[e20d8179] | 755 | int owl_editwin_line_move(owl_editwin *e, int delta) |
---|
[c9334b1] | 756 | { |
---|
[d7043b4] | 757 | int goal_column, change, ll, distance; |
---|
| 758 | int count = 0; |
---|
[a556caa] | 759 | |
---|
| 760 | change = MAX(delta, -delta); |
---|
| 761 | |
---|
[d7043b4] | 762 | goal_column = e->goal_column; |
---|
| 763 | distance = owl_editwin_move_to_beginning_of_line(e); |
---|
| 764 | goal_column = goal_column == -1 ? -distance : goal_column; |
---|
[a556caa] | 765 | |
---|
| 766 | while(count < change) { |
---|
| 767 | if (delta > 0) { |
---|
| 768 | distance += owl_editwin_move_if_not_in(e, 1, "\n"); |
---|
| 769 | distance += owl_editwin_point_move(e, 1); |
---|
| 770 | } else { |
---|
| 771 | /* I really want to assert delta < 0 here */ |
---|
| 772 | distance += owl_editwin_point_move(e, -1); /* to the newline on |
---|
| 773 | the previous line */ |
---|
| 774 | distance += owl_editwin_move_to_beginning_of_line(e); |
---|
| 775 | } |
---|
| 776 | count++; |
---|
[7d4fbcd] | 777 | } |
---|
[a556caa] | 778 | |
---|
| 779 | distance += (ll = owl_editwin_move_to_end_of_line(e)); |
---|
| 780 | if (ll > goal_column) |
---|
| 781 | distance += owl_editwin_point_move(e, goal_column - ll); |
---|
| 782 | |
---|
| 783 | e->goal_column = goal_column; |
---|
| 784 | |
---|
| 785 | return distance; |
---|
[7d4fbcd] | 786 | } |
---|
| 787 | |
---|
[c9334b1] | 788 | void owl_editwin_backspace(owl_editwin *e) |
---|
| 789 | { |
---|
[7d4fbcd] | 790 | /* delete the char before the current one |
---|
| 791 | * and shift later chars left |
---|
| 792 | */ |
---|
[a556caa] | 793 | if(owl_editwin_point_move(e, -1)) |
---|
[7d4fbcd] | 794 | owl_editwin_delete_char(e); |
---|
| 795 | } |
---|
| 796 | |
---|
[c9334b1] | 797 | void owl_editwin_key_up(owl_editwin *e) |
---|
| 798 | { |
---|
[a556caa] | 799 | owl_editwin_line_move(e, -1); |
---|
[7d4fbcd] | 800 | } |
---|
| 801 | |
---|
[c9334b1] | 802 | void owl_editwin_key_down(owl_editwin *e) |
---|
| 803 | { |
---|
[a556caa] | 804 | owl_editwin_line_move(e, 1); |
---|
[7d4fbcd] | 805 | } |
---|
| 806 | |
---|
[c9334b1] | 807 | void owl_editwin_key_left(owl_editwin *e) |
---|
| 808 | { |
---|
[a556caa] | 809 | owl_editwin_point_move(e, -1); |
---|
[7d4fbcd] | 810 | } |
---|
| 811 | |
---|
[c9334b1] | 812 | void owl_editwin_key_right(owl_editwin *e) |
---|
| 813 | { |
---|
[a556caa] | 814 | owl_editwin_point_move(e, 1); |
---|
[7d4fbcd] | 815 | } |
---|
| 816 | |
---|
[5b5f3e6] | 817 | int owl_editwin_forward_word(owl_editwin *e) |
---|
[c9334b1] | 818 | { |
---|
[5b5f3e6] | 819 | int distance; |
---|
[7d4fbcd] | 820 | /* if we're starting on a space, find the first non-space */ |
---|
[5b5f3e6] | 821 | distance = owl_editwin_move_if_in(e, 1, WHITESPACE); |
---|
[7d4fbcd] | 822 | |
---|
[a556caa] | 823 | /* now find the end of this word */ |
---|
[5b5f3e6] | 824 | distance += owl_editwin_move_if_not_in(e, 1, WHITESPACE); |
---|
| 825 | |
---|
| 826 | return distance; |
---|
| 827 | } |
---|
| 828 | |
---|
| 829 | void owl_editwin_move_to_nextword(owl_editwin *e) |
---|
| 830 | { |
---|
| 831 | owl_editwin_forward_word(e); |
---|
[7d4fbcd] | 832 | } |
---|
| 833 | |
---|
[c9334b1] | 834 | /* go backwards to the last non-space character |
---|
| 835 | */ |
---|
[5b5f3e6] | 836 | int owl_editwin_backward_word(owl_editwin *e) |
---|
[c9334b1] | 837 | { |
---|
[a0fbdee] | 838 | oe_excursion x; |
---|
[5b5f3e6] | 839 | int distance = 0; |
---|
| 840 | int further = 0; |
---|
[a556caa] | 841 | int beginning; |
---|
| 842 | /* if in middle of word, beginning of word */ |
---|
| 843 | |
---|
| 844 | /* if at beginning of a word, find beginning of previous word */ |
---|
| 845 | |
---|
[e20d8179] | 846 | if (owl_editwin_is_char_in(e, WHITESPACE)) { |
---|
[a556caa] | 847 | /* if in whitespace past end of word, find a word , the find the beginning*/ |
---|
[5b5f3e6] | 848 | distance += owl_editwin_move_if_in(e, -1, WHITESPACE); /* leaves us on the last |
---|
| 849 | character of the word */ |
---|
[a0fbdee] | 850 | oe_save_excursion(e, &x); |
---|
[a556caa] | 851 | /* are we at the beginning of a word? */ |
---|
| 852 | owl_editwin_point_move(e, -1); |
---|
[e20d8179] | 853 | beginning = owl_editwin_is_char_in(e, WHITESPACE); |
---|
[a0fbdee] | 854 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 855 | if (beginning) |
---|
[5b5f3e6] | 856 | return distance; |
---|
[a556caa] | 857 | } else { |
---|
| 858 | /* in the middle of the word; */ |
---|
[a0fbdee] | 859 | oe_save_excursion(e, &x); |
---|
[5b5f3e6] | 860 | further += owl_editwin_point_move(e, -1); |
---|
[e20d8179] | 861 | if (owl_editwin_is_char_in(e, WHITESPACE)) { /* we were at the beginning */ |
---|
[5b5f3e6] | 862 | distance += owl_editwin_backward_word(e); /* previous case */ |
---|
[8321cb7] | 863 | oe_release_excursion(e, &x); |
---|
[5b5f3e6] | 864 | return distance + further; |
---|
[a556caa] | 865 | } else { |
---|
[a0fbdee] | 866 | oe_restore_excursion(e, &x); |
---|
[7d4fbcd] | 867 | } |
---|
| 868 | } |
---|
[5b5f3e6] | 869 | distance += owl_editwin_move_if_not_in(e, -1, WHITESPACE); |
---|
[a556caa] | 870 | /* will go past */ |
---|
| 871 | if (e->index > e->lock) |
---|
[5b5f3e6] | 872 | distance += owl_editwin_point_move(e, 1); |
---|
| 873 | return distance; |
---|
| 874 | } |
---|
| 875 | |
---|
| 876 | void owl_editwin_move_to_previousword(owl_editwin *e) |
---|
| 877 | { |
---|
| 878 | owl_editwin_backward_word(e); |
---|
[7d4fbcd] | 879 | } |
---|
| 880 | |
---|
[c9334b1] | 881 | void owl_editwin_delete_nextword(owl_editwin *e) |
---|
| 882 | { |
---|
[a0fbdee] | 883 | oe_excursion x; |
---|
[5b5f3e6] | 884 | int distance; |
---|
[a556caa] | 885 | |
---|
[a0fbdee] | 886 | oe_save_excursion(e, &x); |
---|
[5b5f3e6] | 887 | distance = owl_editwin_forward_word(e); |
---|
[a0fbdee] | 888 | oe_restore_excursion(e, &x); |
---|
[5b5f3e6] | 889 | owl_editwin_replace(e, distance, ""); |
---|
[7d4fbcd] | 890 | } |
---|
| 891 | |
---|
[c9334b1] | 892 | void owl_editwin_delete_previousword(owl_editwin *e) |
---|
| 893 | { |
---|
[b68f9cd] | 894 | /* go backwards to the last non-space character, then delete chars */ |
---|
[5b5f3e6] | 895 | int distance; |
---|
[b68f9cd] | 896 | |
---|
[5b5f3e6] | 897 | distance = owl_editwin_backward_word(e); |
---|
| 898 | owl_editwin_replace(e, -distance, ""); |
---|
[b68f9cd] | 899 | } |
---|
| 900 | |
---|
[a556caa] | 901 | void owl_editwin_move_to_line_end(owl_editwin *e) |
---|
[c9334b1] | 902 | { |
---|
[a556caa] | 903 | owl_editwin_move_to_end_of_line(e); |
---|
[7d4fbcd] | 904 | } |
---|
| 905 | |
---|
[a556caa] | 906 | void owl_editwin_delete_to_endofline(owl_editwin *e) |
---|
[c9334b1] | 907 | { |
---|
[a0fbdee] | 908 | oe_excursion x; |
---|
[5b5f3e6] | 909 | int distance; |
---|
[a556caa] | 910 | |
---|
[a0fbdee] | 911 | oe_save_excursion(e, &x); |
---|
[5b5f3e6] | 912 | distance = owl_editwin_move_to_end_of_line(e); |
---|
[a0fbdee] | 913 | oe_restore_excursion(e, &x); |
---|
[5b5f3e6] | 914 | owl_editwin_replace(e, distance ? distance : 1, ""); |
---|
[7d4fbcd] | 915 | } |
---|
| 916 | |
---|
[c9334b1] | 917 | void owl_editwin_move_to_line_start(owl_editwin *e) |
---|
| 918 | { |
---|
[a556caa] | 919 | owl_editwin_move_to_beginning_of_line(e); |
---|
[7d4fbcd] | 920 | } |
---|
| 921 | |
---|
[c9334b1] | 922 | void owl_editwin_move_to_end(owl_editwin *e) |
---|
| 923 | { |
---|
[521bc84] | 924 | oe_set_index(e, e->bufflen); |
---|
[7d4fbcd] | 925 | } |
---|
| 926 | |
---|
[c9334b1] | 927 | void owl_editwin_move_to_top(owl_editwin *e) |
---|
| 928 | { |
---|
[521bc84] | 929 | oe_set_index(e, e->lock); |
---|
[7d4fbcd] | 930 | } |
---|
| 931 | |
---|
[c9334b1] | 932 | void owl_editwin_fill_paragraph(owl_editwin *e) |
---|
| 933 | { |
---|
[a556caa] | 934 | #if 0 /* XXX */ |
---|
[a0fbdee] | 935 | oe_excursion x; |
---|
[7d4fbcd] | 936 | int i, save; |
---|
| 937 | |
---|
| 938 | /* save our starting point */ |
---|
[a0fbdee] | 939 | oe_save_excursion(e, &x); |
---|
[a556caa] | 940 | |
---|
| 941 | save = e->index; |
---|
[7d4fbcd] | 942 | |
---|
| 943 | /* scan back to the beginning of this paragraph */ |
---|
| 944 | for (i=save; i>=e->lock; i--) { |
---|
| 945 | if ( (i<=e->lock) || |
---|
| 946 | ((e->buff[i]=='\n') && (e->buff[i-1]=='\n'))) { |
---|
[521bc84] | 947 | oe_set_index(i + 1); |
---|
[7d4fbcd] | 948 | break; |
---|
| 949 | } |
---|
| 950 | } |
---|
| 951 | |
---|
| 952 | /* main loop */ |
---|
| 953 | while (1) { |
---|
[47519e1b] | 954 | i = _owl_editwin_get_index_from_xy(e); |
---|
[7d4fbcd] | 955 | |
---|
| 956 | /* bail if we hit the end of the buffer */ |
---|
[47519e1b] | 957 | if (i >= e->bufflen || e->buff[i] == '\0') break; |
---|
[7d4fbcd] | 958 | |
---|
| 959 | /* bail if we hit the end of the paragraph */ |
---|
[47519e1b] | 960 | if (e->buff[i] == '\n' && e->buff[i+1] == '\n') break; |
---|
[7d4fbcd] | 961 | |
---|
[50e671c] | 962 | /* bail if we hit a trailing dot on the buffer */ |
---|
| 963 | if (e->buff[i] == '\n' && e->buff[i+1] == '.' |
---|
| 964 | && ((i+2) >= e->bufflen || e->buff[i+2] == '\0')) |
---|
| 965 | break; |
---|
| 966 | |
---|
[7d4fbcd] | 967 | /* if we've travelled too far, linewrap */ |
---|
| 968 | if ((e->buffx) >= e->fillcol) { |
---|
[b2c1bd4] | 969 | int len = e->bufflen; |
---|
[7d4fbcd] | 970 | _owl_editwin_linewrap_word(e); |
---|
[b2c1bd4] | 971 | /* we may have added a character. */ |
---|
| 972 | if (i < save) save += e->bufflen - len; |
---|
[521bc84] | 973 | oe_set_index(i); |
---|
[7d4fbcd] | 974 | } |
---|
| 975 | |
---|
| 976 | /* did we hit the end of a line too soon? */ |
---|
[84027015] | 977 | /* asedeno: Here we replace a newline with a space. We may want to |
---|
| 978 | consider removing the space if the characters to either side |
---|
| 979 | are CJK ideograms.*/ |
---|
[47519e1b] | 980 | i = _owl_editwin_get_index_from_xy(e); |
---|
| 981 | if (e->buff[i] == '\n' && e->buffx < e->fillcol - 1) { |
---|
[7d4fbcd] | 982 | /* ********* we need to make sure we don't pull in a word that's too long ***********/ |
---|
| 983 | e->buff[i]=' '; |
---|
| 984 | } |
---|
[b2c1bd4] | 985 | |
---|
[7d4fbcd] | 986 | /* fix spacing */ |
---|
[47519e1b] | 987 | i = _owl_editwin_get_index_from_xy(e); |
---|
| 988 | if (e->buff[i] == ' ' && e->buff[i+1] == ' ') { |
---|
| 989 | if (e->buff[i-1] == '.' || e->buff[i-1] == '!' || e->buff[i-1] == '?') { |
---|
[7d4fbcd] | 990 | owl_editwin_key_right(e); |
---|
| 991 | } else { |
---|
| 992 | owl_editwin_delete_char(e); |
---|
[84027015] | 993 | /* if we did this ahead of the save point, adjust it. Changing |
---|
| 994 | by one is fine here because we're only removing an ASCII |
---|
| 995 | space. */ |
---|
[47519e1b] | 996 | if (i < save) save--; |
---|
[7d4fbcd] | 997 | } |
---|
| 998 | } else { |
---|
| 999 | owl_editwin_key_right(e); |
---|
| 1000 | } |
---|
| 1001 | } |
---|
| 1002 | |
---|
| 1003 | /* put cursor back at starting point */ |
---|
[a0fbdee] | 1004 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 1005 | #endif |
---|
[7d4fbcd] | 1006 | } |
---|
| 1007 | |
---|
[cf83b7a] | 1008 | /* returns true if only whitespace remains */ |
---|
[c9334b1] | 1009 | int owl_editwin_is_at_end(owl_editwin *e) |
---|
| 1010 | { |
---|
[a556caa] | 1011 | return (only_whitespace(e->buff + e->index)); |
---|
[217a43e] | 1012 | } |
---|
| 1013 | |
---|
[bab52da] | 1014 | static int owl_editwin_check_dotsend(owl_editwin *e) |
---|
[c9334b1] | 1015 | { |
---|
[47519e1b] | 1016 | char *p, *p_n, *p_p; |
---|
| 1017 | gunichar c; |
---|
[7d4fbcd] | 1018 | |
---|
| 1019 | if (!e->dotsend) return(0); |
---|
[47519e1b] | 1020 | |
---|
| 1021 | p = g_utf8_find_prev_char(e->buff, e->buff + e->bufflen); |
---|
| 1022 | p_n = g_utf8_find_next_char(p, NULL); |
---|
| 1023 | p_p = g_utf8_find_prev_char(e->buff, p); |
---|
| 1024 | c = g_utf8_get_char(p); |
---|
| 1025 | while (p != NULL) { |
---|
| 1026 | if (*p == '.' |
---|
| 1027 | && p_p != NULL && (*p_p == '\n' || *p_p == '\r') |
---|
| 1028 | && p_n != NULL && (*p_n == '\n' || *p_n == '\r')) { |
---|
| 1029 | e->bufflen = p - e->buff; |
---|
| 1030 | e->buff[e->bufflen] = '\0'; |
---|
[7d4fbcd] | 1031 | return(1); |
---|
| 1032 | } |
---|
[47519e1b] | 1033 | if (c != '\0' && !g_unichar_isspace(c)) return(0); |
---|
| 1034 | p_n = p; |
---|
| 1035 | p = p_p; |
---|
| 1036 | c = g_utf8_get_char(p); |
---|
| 1037 | p_p = g_utf8_find_prev_char(e->buff, p); |
---|
[7d4fbcd] | 1038 | } |
---|
| 1039 | return(0); |
---|
| 1040 | } |
---|
| 1041 | |
---|
[fac5463] | 1042 | void owl_editwin_post_process_char(owl_editwin *e, owl_input j) |
---|
[c9334b1] | 1043 | { |
---|
[a556caa] | 1044 | /* XXX force a redisplay? */ |
---|
[fac5463] | 1045 | if ((j.ch==13 || j.ch==10) && owl_editwin_check_dotsend(e)) { |
---|
[7d4fbcd] | 1046 | owl_command_editmulti_done(e); |
---|
| 1047 | return; |
---|
| 1048 | } |
---|
[e20d8179] | 1049 | owl_editwin_redisplay(e, 0); |
---|
[7d4fbcd] | 1050 | } |
---|
| 1051 | |
---|
[16cfd12a] | 1052 | static int oe_region_width(owl_editwin *e, int start, int end, int width) |
---|
| 1053 | { |
---|
| 1054 | char *p; |
---|
| 1055 | for(p = e->buff + start; |
---|
| 1056 | p < e->buff + end; |
---|
| 1057 | p = g_utf8_find_next_char(p, NULL)) |
---|
| 1058 | width += oe_char_width(g_utf8_get_char(p), width); |
---|
| 1059 | |
---|
| 1060 | return width; |
---|
| 1061 | } |
---|
| 1062 | |
---|
[ebf0128] | 1063 | static void oe_insert_char(owl_editwin *e, gunichar c) |
---|
[fac5463] | 1064 | { |
---|
[16cfd12a] | 1065 | oe_excursion x; |
---|
[5b5f3e6] | 1066 | char tmp[7]; |
---|
[16cfd12a] | 1067 | int replaced = -1; |
---|
[5b5f3e6] | 1068 | |
---|
[ebf0128] | 1069 | if (c == '\r') /* translate CRs to NLs */ |
---|
| 1070 | c = '\n'; |
---|
| 1071 | |
---|
[16cfd12a] | 1072 | if (!g_unichar_iscntrl(c) || c == '\n' || c== '\t' ) { |
---|
[ebf0128] | 1073 | memset(tmp, 0, 7); |
---|
| 1074 | |
---|
| 1075 | if (c == '\n' && e->style == OWL_EDITWIN_STYLE_ONELINE) { |
---|
| 1076 | return; |
---|
| 1077 | } |
---|
| 1078 | |
---|
[16cfd12a] | 1079 | if (e->cursorx != -1 && e->cursorx + oe_char_width(c, e->cursorx) > e->wrapcol) { |
---|
| 1080 | /* XXX this is actually wrong: |
---|
| 1081 | * + If the line has been been wrapped, we can be past the wrap column but |
---|
| 1082 | * e->cursorx be much smaller. |
---|
| 1083 | * + If the user went back and inserted a bunch of stuff in the middle of |
---|
| 1084 | * the line, there may be more than one word past the wrap column. |
---|
| 1085 | */ |
---|
| 1086 | oe_save_excursion(e, &x); |
---|
| 1087 | |
---|
| 1088 | if (c == ' ' || c == '\t') { |
---|
| 1089 | owl_editwin_point_move(e, -1); |
---|
| 1090 | replaced = -owl_editwin_move_if_in(e, -1, " \t"); |
---|
| 1091 | if (!replaced) { |
---|
| 1092 | c = '\n'; |
---|
| 1093 | replaced = -1; |
---|
| 1094 | } |
---|
| 1095 | } else { |
---|
| 1096 | while(!owl_editwin_at_beginning_of_line(e)) { |
---|
| 1097 | owl_editwin_point_move(e, -1); |
---|
| 1098 | if (owl_util_can_break_after(owl_editwin_get_char_at_point(e))) { |
---|
| 1099 | replaced = -owl_editwin_move_if_in(e, -1, " \t"); |
---|
| 1100 | break; |
---|
| 1101 | } |
---|
| 1102 | } |
---|
| 1103 | if (owl_editwin_at_beginning_of_line(e)) |
---|
| 1104 | replaced = -1; |
---|
| 1105 | } |
---|
| 1106 | if (replaced && !owl_editwin_at_beginning_of_line(e)) |
---|
| 1107 | owl_editwin_point_move(e, 1); |
---|
| 1108 | if (replaced >= 0) { |
---|
| 1109 | owl_editwin_replace(e, replaced, "\n"); |
---|
| 1110 | } |
---|
| 1111 | |
---|
| 1112 | oe_restore_excursion(e, &x); |
---|
| 1113 | } |
---|
| 1114 | |
---|
| 1115 | if (replaced >= 0 && (c == ' ' || c == '\t')) |
---|
| 1116 | return; /* our work here is done */ |
---|
| 1117 | |
---|
[ebf0128] | 1118 | g_unichar_to_utf8(c, tmp); |
---|
| 1119 | owl_editwin_replace(e, 0, tmp); |
---|
| 1120 | } |
---|
| 1121 | } |
---|
| 1122 | |
---|
| 1123 | void owl_editwin_process_char(owl_editwin *e, owl_input j) |
---|
| 1124 | { |
---|
[5b5f3e6] | 1125 | if (j.ch == ERR) |
---|
| 1126 | return; |
---|
[fac5463] | 1127 | /* Ignore ncurses control characters. */ |
---|
[e20d8179] | 1128 | if (j.ch < 0x100) { |
---|
[ebf0128] | 1129 | oe_insert_char(e, j.uch); |
---|
[fac5463] | 1130 | } |
---|
| 1131 | } |
---|
| 1132 | |
---|
[c9334b1] | 1133 | char *owl_editwin_get_text(owl_editwin *e) |
---|
| 1134 | { |
---|
[7d4fbcd] | 1135 | return(e->buff+e->lock); |
---|
| 1136 | } |
---|
| 1137 | |
---|
[a556caa] | 1138 | int owl_editwin_get_echochar(owl_editwin *e) { |
---|
| 1139 | return e->echochar; |
---|
| 1140 | } |
---|
[2f21a41] | 1141 | |
---|
| 1142 | |
---|
| 1143 | /* |
---|
| 1144 | * Local Variables: |
---|
| 1145 | * mode:C |
---|
| 1146 | * c-basic-offset:2 |
---|
| 1147 | * End: |
---|
| 1148 | */ |
---|