[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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[a556caa] | 9 | struct _owl_editwin { /*noproto*/ |
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| 10 | char *buff; |
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| 11 | owl_history *hist; |
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| 12 | int bufflen; |
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| 13 | int allocated; |
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| 14 | int index; |
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| 15 | int goal_column; |
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| 16 | int topindex; |
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| 17 | int winlines, wincols, fillcol, wrapcol; |
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| 18 | WINDOW *curswin; |
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| 19 | int style; |
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| 20 | int lock; |
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| 21 | int dotsend; |
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| 22 | int echochar; |
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| 23 | |
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| 24 | char *command; |
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| 25 | void (*callback)(struct _owl_editwin*); |
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| 26 | void *cbdata; |
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| 27 | }; |
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| 28 | |
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| 29 | typedef struct { /*noproto*/ |
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| 30 | int index; |
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| 31 | int goal_column; |
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[a0fbdee] | 32 | int lock; |
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| 33 | } oe_excursion; |
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[a556caa] | 34 | |
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[e20d8179] | 35 | static void oe_reframe(owl_editwin *e); |
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[bab52da] | 36 | static void oe_save_excursion(owl_editwin *e, oe_excursion *x); |
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| 37 | static void oe_restore_excursion(owl_editwin *e, oe_excursion *x); |
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| 38 | static int oe_find_display_line(owl_editwin *e, int *x, int index); |
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| 39 | static int owl_editwin_limit_maxcols(int v, int maxv); |
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| 40 | static int owl_editwin_check_dotsend(owl_editwin *e); |
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| 41 | static void _owl_editwin_process_char(owl_editwin *e, gunichar j); |
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| 42 | static int owl_editwin_is_char_in(owl_editwin *e, char *set); |
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| 43 | static int owl_editwin_is_char_in(owl_editwin *e, char *set); |
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| 44 | static int owl_editwin_linewrap_word(owl_editwin *e); |
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| 45 | static gunichar owl_editwin_get_char_at_point(owl_editwin *e); |
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| 46 | |
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| 47 | static void _owl_editwin_addspace(owl_editwin *e); |
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| 48 | static void owl_editwin_overwrite_char(owl_editwin *e, gunichar c); |
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| 49 | static void owl_editwin_insert_char(owl_editwin *e, gunichar c); |
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| 50 | static void owl_editwin_overwrite_string(owl_editwin *e, char *string); |
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[e20d8179] | 51 | |
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[7d4fbcd] | 52 | #define INCR 5000 |
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| 53 | |
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[a556caa] | 54 | #define WHITESPACE " \n\t" |
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| 55 | |
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[bab52da] | 56 | owl_editwin *owl_editwin_allocate(void) |
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| 57 | { |
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[a556caa] | 58 | return owl_malloc(sizeof(owl_editwin)); |
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| 59 | } |
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| 60 | |
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[bab52da] | 61 | static inline void oe_set_index(owl_editwin *e, int index) |
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| 62 | { |
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[521bc84] | 63 | e->index = index; |
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| 64 | e->goal_column = -1; |
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| 65 | } |
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| 66 | |
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[cf83b7a] | 67 | /* initialize the editwin e. |
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| 68 | * 'win' is an already initialzed curses window that will be used by editwin |
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| 69 | */ |
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[c9334b1] | 70 | void owl_editwin_init(owl_editwin *e, WINDOW *win, int winlines, int wincols, int style, owl_history *hist) |
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| 71 | { |
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[e20d8179] | 72 | e->buff=owl_malloc(INCR); |
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[7d4fbcd] | 73 | e->buff[0]='\0'; |
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| 74 | e->bufflen=0; |
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[10b866d] | 75 | e->hist=hist; |
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[7d4fbcd] | 76 | e->allocated=INCR; |
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[521bc84] | 77 | oe_set_index(e, 0); |
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[a556caa] | 78 | e->goal_column = -1; |
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| 79 | e->topindex=0; |
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[7d4fbcd] | 80 | e->winlines=winlines; |
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| 81 | e->wincols=wincols; |
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[9a6cc40] | 82 | e->fillcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxfillcols(&g)); |
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| 83 | e->wrapcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxwrapcols(&g)); |
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[7d4fbcd] | 84 | e->curswin=win; |
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| 85 | e->style=style; |
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| 86 | if ((style!=OWL_EDITWIN_STYLE_MULTILINE) && |
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| 87 | (style!=OWL_EDITWIN_STYLE_ONELINE)) { |
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| 88 | e->style=OWL_EDITWIN_STYLE_MULTILINE; |
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| 89 | } |
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| 90 | e->lock=0; |
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| 91 | e->dotsend=0; |
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[c9334b1] | 92 | e->echochar='\0'; |
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[e74c01c] | 93 | |
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[af1920fd] | 94 | /* We get initialized multiple times, but we need to hold on to |
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| 95 | the callbacks, so we can't NULL them here. */ |
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[e74c01c] | 96 | /* |
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| 97 | e->command = NULL; |
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| 98 | e->callback = NULL; |
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| 99 | e->cbdata = NULL; |
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| 100 | */ |
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[7d4fbcd] | 101 | if (win) werase(win); |
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| 102 | } |
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| 103 | |
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[c9334b1] | 104 | void owl_editwin_set_curswin(owl_editwin *e, WINDOW *w, int winlines, int wincols) |
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| 105 | { |
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[7d4fbcd] | 106 | e->curswin=w; |
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| 107 | e->winlines=winlines; |
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| 108 | e->wincols=wincols; |
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[9a6cc40] | 109 | e->fillcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxfillcols(&g)); |
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| 110 | e->wrapcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxwrapcols(&g)); |
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[7d4fbcd] | 111 | } |
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| 112 | |
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[c9334b1] | 113 | /* echo the character 'ch' for each normal character keystroke, |
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| 114 | * excepting locktext. This is useful for entering passwords etc. If |
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| 115 | * ch=='\0' characters are echo'd normally |
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| 116 | */ |
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| 117 | void owl_editwin_set_echochar(owl_editwin *e, int ch) |
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| 118 | { |
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| 119 | e->echochar=ch; |
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| 120 | } |
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| 121 | |
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| 122 | WINDOW *owl_editwin_get_curswin(owl_editwin *e) |
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| 123 | { |
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[060b3b4] | 124 | return(e->curswin); |
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[7d4fbcd] | 125 | } |
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| 126 | |
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[c9334b1] | 127 | void owl_editwin_set_history(owl_editwin *e, owl_history *h) |
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| 128 | { |
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[060b3b4] | 129 | e->hist=h; |
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[10b866d] | 130 | } |
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| 131 | |
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[c9334b1] | 132 | owl_history *owl_editwin_get_history(owl_editwin *e) |
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| 133 | { |
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[060b3b4] | 134 | return(e->hist); |
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[10b866d] | 135 | } |
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| 136 | |
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[c9334b1] | 137 | void owl_editwin_set_dotsend(owl_editwin *e) |
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| 138 | { |
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[7d4fbcd] | 139 | e->dotsend=1; |
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| 140 | } |
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| 141 | |
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[bab52da] | 142 | void owl_editwin_set_command(owl_editwin *e, char *command) |
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| 143 | { |
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[e74c01c] | 144 | if(e->command) owl_free(e->command); |
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| 145 | e->command = owl_strdup(command); |
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| 146 | } |
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| 147 | |
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[bab52da] | 148 | char *owl_editwin_get_command(owl_editwin *e) |
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| 149 | { |
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[e74c01c] | 150 | if(e->command) return e->command; |
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| 151 | return ""; |
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| 152 | } |
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| 153 | |
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[bab52da] | 154 | void owl_editwin_set_callback(owl_editwin *e, void (*cb)(owl_editwin*)) |
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| 155 | { |
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[e74c01c] | 156 | e->callback = cb; |
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| 157 | } |
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| 158 | |
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[bab52da] | 159 | void (*owl_editwin_get_callback(owl_editwin *e))(owl_editwin*) |
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| 160 | { |
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[e74c01c] | 161 | return e->callback; |
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| 162 | } |
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| 163 | |
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[bab52da] | 164 | void owl_editwin_set_cbdata(owl_editwin *e, void *data) |
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| 165 | { |
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[e74c01c] | 166 | e->cbdata = data; |
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| 167 | } |
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| 168 | |
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[a556caa] | 169 | void *owl_editwin_get_cbdata(owl_editwin *e) { |
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[e74c01c] | 170 | return e->cbdata; |
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| 171 | } |
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| 172 | |
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| 173 | void owl_editwin_do_callback(owl_editwin *e) { |
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| 174 | void (*cb)(owl_editwin*); |
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| 175 | cb=owl_editwin_get_callback(e); |
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| 176 | if(!cb) { |
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| 177 | owl_function_error("Internal error: No editwin callback!"); |
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| 178 | } else { |
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[af1920fd] | 179 | /* owl_function_error("text: |%s|", owl_editwin_get_text(e)); */ |
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[e74c01c] | 180 | cb(e); |
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| 181 | } |
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| 182 | } |
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| 183 | |
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[bab52da] | 184 | static int owl_editwin_limit_maxcols(int v, int maxv) |
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[c9334b1] | 185 | { |
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[d36f2cb] | 186 | if (maxv > 5 && v > maxv) { |
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[060b3b4] | 187 | return(maxv); |
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[d36f2cb] | 188 | } else { |
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[060b3b4] | 189 | return(v); |
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[d36f2cb] | 190 | } |
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| 191 | } |
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| 192 | |
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[c9334b1] | 193 | /* set text to be 'locked in' at the beginning of the buffer, any |
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| 194 | * previous text (including locked text) will be overwritten |
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| 195 | */ |
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| 196 | void owl_editwin_set_locktext(owl_editwin *e, char *text) |
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| 197 | { |
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[521bc84] | 198 | oe_set_index(e, 0); |
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[7d4fbcd] | 199 | owl_editwin_overwrite_string(e, text); |
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[47519e1b] | 200 | owl_editwin_overwrite_char(e, '\0'); |
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[7d4fbcd] | 201 | e->lock=strlen(text); |
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[521bc84] | 202 | oe_set_index(e, e->lock); |
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[7d4fbcd] | 203 | owl_editwin_redisplay(e, 0); |
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| 204 | } |
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| 205 | |
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[c9334b1] | 206 | int owl_editwin_get_style(owl_editwin *e) |
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| 207 | { |
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[7d4fbcd] | 208 | return(e->style); |
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| 209 | } |
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| 210 | |
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[c9334b1] | 211 | void owl_editwin_new_style(owl_editwin *e, int newstyle, owl_history *h) |
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| 212 | { |
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[7d4fbcd] | 213 | char *ptr; |
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[10b866d] | 214 | |
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| 215 | owl_editwin_set_history(e, h); |
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[7d4fbcd] | 216 | if (e->style==newstyle) return; |
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| 217 | |
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| 218 | if (newstyle==OWL_EDITWIN_STYLE_MULTILINE) { |
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| 219 | e->style=newstyle; |
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| 220 | } else if (newstyle==OWL_EDITWIN_STYLE_ONELINE) { |
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| 221 | e->style=newstyle; |
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| 222 | |
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| 223 | /* nuke everything after the first line */ |
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| 224 | if (e->bufflen > 0) { |
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| 225 | ptr=strchr(e->buff, '\n')-1; |
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| 226 | if (ptr) { |
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| 227 | e->bufflen=ptr - e->buff; |
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| 228 | e->buff[e->bufflen]='\0'; |
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[521bc84] | 229 | oe_set_index(e, 0); |
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[7d4fbcd] | 230 | } |
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| 231 | } |
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| 232 | } |
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| 233 | } |
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| 234 | |
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[c9334b1] | 235 | /* completly reinitialize the buffer */ |
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| 236 | void owl_editwin_fullclear(owl_editwin *e) |
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| 237 | { |
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[7d4fbcd] | 238 | owl_free(e->buff); |
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[10b866d] | 239 | owl_editwin_init(e, e->curswin, e->winlines, e->wincols, e->style, e->hist); |
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[7d4fbcd] | 240 | } |
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| 241 | |
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[c9334b1] | 242 | /* clear all text except for locktext and put the cursor at the |
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| 243 | * beginning |
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| 244 | */ |
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| 245 | void owl_editwin_clear(owl_editwin *e) |
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| 246 | { |
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| 247 | |
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[6073462] | 248 | int lock = e->lock; |
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[10b866d] | 249 | int dotsend=e->dotsend; |
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[7d4fbcd] | 250 | char *locktext=NULL; |
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[cc6f009] | 251 | char echochar=e->echochar; |
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[10b866d] | 252 | |
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[6073462] | 253 | if (lock > 0) { |
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[7d4fbcd] | 254 | locktext=owl_malloc(e->lock+20); |
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| 255 | strncpy(locktext, e->buff, e->lock); |
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| 256 | locktext[e->lock]='\0'; |
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| 257 | } |
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| 258 | |
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| 259 | owl_free(e->buff); |
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[10b866d] | 260 | owl_editwin_init(e, e->curswin, e->winlines, e->wincols, e->style, e->hist); |
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[7d4fbcd] | 261 | |
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| 262 | if (lock > 0) { |
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| 263 | owl_editwin_set_locktext(e, locktext); |
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| 264 | } |
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[10b866d] | 265 | if (dotsend) { |
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| 266 | owl_editwin_set_dotsend(e); |
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| 267 | } |
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[cc6f009] | 268 | if (echochar) { |
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| 269 | owl_editwin_set_echochar(e, echochar); |
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| 270 | } |
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[7d4fbcd] | 271 | |
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| 272 | if (locktext) owl_free(locktext); |
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[6073462] | 273 | |
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[521bc84] | 274 | oe_set_index(e, lock); |
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[7d4fbcd] | 275 | } |
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| 276 | |
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[c9334b1] | 277 | /* malloc more space for the buffer */ |
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[bab52da] | 278 | static void _owl_editwin_addspace(owl_editwin *e) |
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[c9334b1] | 279 | { |
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[7d4fbcd] | 280 | e->buff=owl_realloc(e->buff, e->allocated+INCR); |
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| 281 | if (!e->buff) { |
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[a556caa] | 282 | /* error *//*XXXXXXXXXXXXXXXX*/ |
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[7d4fbcd] | 283 | return; |
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| 284 | } |
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| 285 | e->allocated+=INCR; |
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| 286 | } |
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| 287 | |
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[c9334b1] | 288 | void owl_editwin_recenter(owl_editwin *e) |
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| 289 | { |
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[a556caa] | 290 | e->topindex = -1; |
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| 291 | } |
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[e20d8179] | 292 | |
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[a0fbdee] | 293 | static void oe_save_excursion(owl_editwin *e, oe_excursion *x) |
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| 294 | { |
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| 295 | x->index = e->index; |
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| 296 | x->goal_column = e->goal_column; |
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| 297 | x->lock = e->lock; |
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| 298 | } |
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| 299 | |
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| 300 | static void oe_restore_excursion(owl_editwin *e, oe_excursion *x) |
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| 301 | { |
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[521bc84] | 302 | oe_set_index(e, x->index); |
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[a0fbdee] | 303 | e->goal_column = x->goal_column; |
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| 304 | e->lock = x->lock; |
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| 305 | } |
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| 306 | |
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[e20d8179] | 307 | static inline char *oe_next_point(owl_editwin *e, char *p) |
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| 308 | { |
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| 309 | char *boundary = e->buff + e->bufflen + 1; |
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| 310 | char *q; |
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| 311 | |
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| 312 | q = g_utf8_find_next_char(p, boundary); |
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| 313 | while (q && g_unichar_ismark(g_utf8_get_char(q))) |
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| 314 | q = g_utf8_find_next_char(q, boundary); |
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| 315 | |
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| 316 | if (q == p) |
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| 317 | return NULL; |
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| 318 | return q; |
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| 319 | } |
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| 320 | |
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| 321 | static inline char *oe_prev_point(owl_editwin *e, char *p) |
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| 322 | { |
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| 323 | char *boundary = e->buff + e->lock; |
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| 324 | |
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| 325 | p = g_utf8_find_prev_char(boundary, p); |
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| 326 | while (p && g_unichar_ismark(g_utf8_get_char(p))) |
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| 327 | p = g_utf8_find_prev_char(boundary, p); |
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| 328 | |
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| 329 | return p; |
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| 330 | } |
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| 331 | |
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[19f765d] | 332 | static int oe_find_display_line(owl_editwin *e, int *x, int index) |
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| 333 | { |
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| 334 | int width = 0, cw; |
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| 335 | gunichar c = -1; |
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| 336 | char *p; |
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| 337 | |
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[77d4402] | 338 | while(1) { |
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| 339 | /* note the position of the dot */ |
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[2021bea] | 340 | if (x != NULL && index == e->index && width < e->wincols) |
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[19f765d] | 341 | *x = width; |
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[77d4402] | 342 | |
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[19f765d] | 343 | /* get the current character */ |
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| 344 | c = g_utf8_get_char(e->buff + index); |
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| 345 | |
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| 346 | /* figure out how wide it is */ |
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| 347 | if (c == 9) /* TAB */ |
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| 348 | cw = TABSIZE - width % TABSIZE; |
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| 349 | else |
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| 350 | cw = mk_wcwidth(c); |
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| 351 | if (cw < 0) /* control characters */ |
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| 352 | cw = 0; |
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| 353 | |
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[77d4402] | 354 | if (width + cw > e->wincols) { |
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| 355 | if (x != NULL && *x == width) |
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| 356 | *x = -1; |
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[19f765d] | 357 | break; |
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[77d4402] | 358 | } |
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[19f765d] | 359 | width += cw; |
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| 360 | |
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| 361 | if (c == '\n') { |
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[77d4402] | 362 | if (width < e->wincols) |
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| 363 | ++index; /* skip the newline */ |
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[19f765d] | 364 | break; |
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| 365 | } |
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| 366 | |
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| 367 | /* find the next character */ |
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| 368 | p = oe_next_point(e, e->buff + index); |
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| 369 | if (p == NULL) { /* we ran off the end */ |
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| 370 | if (x != NULL && e->index > index) |
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| 371 | *x = width + 1; |
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| 372 | break; |
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| 373 | } |
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| 374 | index = p - e->buff; |
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[cedc95c] | 375 | |
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[19f765d] | 376 | } |
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| 377 | return index; |
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| 378 | } |
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| 379 | |
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[e20d8179] | 380 | static void oe_reframe(owl_editwin *e) { |
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[cedc95c] | 381 | oe_excursion x; |
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| 382 | int goal = e->winlines / 2; |
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| 383 | int index; |
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| 384 | int count = 0; |
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| 385 | int point; |
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| 386 | int n, i; |
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| 387 | int last; |
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| 388 | |
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| 389 | oe_save_excursion(e, &x); |
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| 390 | /* step back line-by-line through the buffer until we have >= goal lines of |
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| 391 | display text */ |
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| 392 | e->lock = 0; /* we can (must) tread on the locktext */ |
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| 393 | |
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| 394 | point = e->index; |
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| 395 | last = -1; |
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| 396 | while (count < goal) { |
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| 397 | index = e->index; |
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| 398 | owl_editwin_move_to_beginning_of_line(e); |
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| 399 | if (last == e->index) |
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| 400 | break; |
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| 401 | last = e->index; |
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| 402 | for (n = 0, i = e->index; i < index; n++) |
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| 403 | i = oe_find_display_line(e, NULL, i); |
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| 404 | count += n == 0 ? 1 : n; |
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| 405 | if (count < goal) |
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| 406 | owl_editwin_point_move(e, -1); |
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| 407 | } |
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| 408 | |
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| 409 | e->topindex = e->index; |
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[521bc84] | 410 | /* if we overshot, backtrack */ |
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| 411 | for (n = 0; n < (count - goal); n++) |
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| 412 | e->topindex = oe_find_display_line(e, NULL, e->topindex); |
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[cedc95c] | 413 | |
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| 414 | oe_restore_excursion(e, &x); |
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[7d4fbcd] | 415 | } |
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| 416 | |
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[c9334b1] | 417 | /* regenerate the text on the curses window */ |
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| 418 | /* if update == 1 then do a doupdate(), otherwise do not */ |
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| 419 | void owl_editwin_redisplay(owl_editwin *e, int update) |
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| 420 | { |
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[19f765d] | 421 | int x = -1, y = -1, t; |
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[77d4402] | 422 | int line, index, lineindex, times = 0; |
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[7d4fbcd] | 423 | |
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[bd1a1ae] | 424 | do { |
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[cedc95c] | 425 | werase(e->curswin); |
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| 426 | |
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[bd1a1ae] | 427 | if (e->topindex == -1 || e->index < e->topindex) |
---|
[e20d8179] | 428 | oe_reframe(e); |
---|
| 429 | |
---|
[bd1a1ae] | 430 | line = 0; |
---|
| 431 | index = e->topindex; |
---|
| 432 | while(line < e->winlines) { |
---|
| 433 | lineindex = index; |
---|
[19f765d] | 434 | t = -1; |
---|
| 435 | index = oe_find_display_line(e, &t, lineindex); |
---|
| 436 | if (x == -1 && t != -1) |
---|
| 437 | x = t, y = line; |
---|
[bd1a1ae] | 438 | if (index - lineindex) |
---|
| 439 | mvwaddnstr(e->curswin, line, 0, |
---|
| 440 | e->buff + lineindex, |
---|
| 441 | index - lineindex); |
---|
| 442 | line++; |
---|
[a556caa] | 443 | } |
---|
[19f765d] | 444 | if (x == -1) |
---|
[bd1a1ae] | 445 | e->topindex = -1; /* force a reframe */ |
---|
[77d4402] | 446 | times++; |
---|
| 447 | } while(x == -1 && times < 3); |
---|
[e20d8179] | 448 | |
---|
[19f765d] | 449 | wmove(e->curswin, y, x); |
---|
[7d4fbcd] | 450 | wnoutrefresh(e->curswin); |
---|
[a556caa] | 451 | if (update == 1) |
---|
[7d4fbcd] | 452 | doupdate(); |
---|
| 453 | } |
---|
| 454 | |
---|
[47519e1b] | 455 | /* Remove n bytes at cursor. */ |
---|
| 456 | void _owl_editwin_remove_bytes(owl_editwin *e, int n) /*noproto*/ |
---|
| 457 | { |
---|
[a556caa] | 458 | int i = e->index + n; |
---|
[47519e1b] | 459 | for (; i < e->bufflen; i++) { |
---|
| 460 | e->buff[i-n] = e->buff[i]; |
---|
| 461 | } |
---|
[e20d8179] | 462 | |
---|
[47519e1b] | 463 | e->bufflen -= n; |
---|
| 464 | e->buff[e->bufflen] = '\0'; |
---|
| 465 | } |
---|
[830c36e] | 466 | |
---|
[47519e1b] | 467 | /* Insert n bytes at cursor.*/ |
---|
| 468 | void _owl_editwin_insert_bytes(owl_editwin *e, int n) /*noproto*/ |
---|
| 469 | { |
---|
[a556caa] | 470 | int i; |
---|
[e9bb404] | 471 | |
---|
[47519e1b] | 472 | if ((e->bufflen + n) > (e->allocated - 5)) { |
---|
| 473 | _owl_editwin_addspace(e); |
---|
| 474 | } |
---|
| 475 | |
---|
[a556caa] | 476 | if(e->index != e->bufflen) { |
---|
| 477 | for (i = e->bufflen + n - 1; i > e->index; i--) { |
---|
[e9bb404] | 478 | e->buff[i] = e->buff[i - n]; |
---|
| 479 | } |
---|
[47519e1b] | 480 | } |
---|
[e9bb404] | 481 | |
---|
| 482 | e->bufflen += n; |
---|
| 483 | e->buff[e->bufflen] = '\0'; |
---|
| 484 | |
---|
[47519e1b] | 485 | } |
---|
| 486 | |
---|
[7d4fbcd] | 487 | |
---|
[c9334b1] | 488 | /* linewrap the word just before the cursor. |
---|
| 489 | * returns 0 on success |
---|
| 490 | * returns -1 if we could not wrap. |
---|
| 491 | */ |
---|
[bab52da] | 492 | static int owl_editwin_linewrap_word(owl_editwin *e) |
---|
[c9334b1] | 493 | { |
---|
[84027015] | 494 | int i; |
---|
| 495 | char *ptr1, *start; |
---|
| 496 | gunichar c; |
---|
[7d4fbcd] | 497 | |
---|
[84027015] | 498 | start = e->buff + e->lock; |
---|
| 499 | |
---|
[a556caa] | 500 | ptr1 = e->buff + e->index; |
---|
[84027015] | 501 | ptr1 = g_utf8_find_prev_char(start, ptr1); |
---|
| 502 | |
---|
| 503 | while (ptr1) { |
---|
| 504 | c = g_utf8_get_char(ptr1); |
---|
| 505 | if (owl_util_can_break_after(c)) { |
---|
| 506 | if (c != ' ') { |
---|
| 507 | i = ptr1 - e->buff; |
---|
[521bc84] | 508 | oe_set_index(e, i); |
---|
[b2c1bd4] | 509 | _owl_editwin_insert_bytes(e, 1); |
---|
| 510 | /* _owl_editwin_insert_bytes may move e->buff. */ |
---|
[84027015] | 511 | ptr1 = e->buff + i; |
---|
| 512 | } |
---|
| 513 | *ptr1 = '\n'; |
---|
| 514 | return 0; |
---|
[7d4fbcd] | 515 | } |
---|
[2d4ff14] | 516 | else if (c == '\n') { |
---|
| 517 | return 0; |
---|
| 518 | } |
---|
[84027015] | 519 | ptr1 = g_utf8_find_prev_char(start, ptr1); |
---|
[7d4fbcd] | 520 | } |
---|
[84027015] | 521 | return -1; |
---|
[7d4fbcd] | 522 | } |
---|
| 523 | |
---|
[c9334b1] | 524 | /* insert a character at the current point (shift later |
---|
| 525 | * characters over) |
---|
| 526 | */ |
---|
[bab52da] | 527 | static void owl_editwin_insert_char(owl_editwin *e, gunichar c) |
---|
[c9334b1] | 528 | { |
---|
[a556caa] | 529 | int i, ret, len; |
---|
[47519e1b] | 530 | char tmp[6]; |
---|
| 531 | memset(tmp, '\0', 6); |
---|
[830c36e] | 532 | |
---|
[7d4fbcd] | 533 | /* \r is \n */ |
---|
[47519e1b] | 534 | if (c == '\r') { |
---|
| 535 | c = '\n'; |
---|
[7d4fbcd] | 536 | } |
---|
| 537 | |
---|
[47519e1b] | 538 | if (c == '\n' && e->style == OWL_EDITWIN_STYLE_ONELINE) { |
---|
[7d4fbcd] | 539 | /* perhaps later this will change some state that allows the string |
---|
| 540 | to be read */ |
---|
| 541 | return; |
---|
| 542 | } |
---|
| 543 | |
---|
[47519e1b] | 544 | g_unichar_to_utf8(c, tmp); |
---|
| 545 | len = strlen(tmp); |
---|
[830c36e] | 546 | |
---|
[7d4fbcd] | 547 | /* make sure there is enough memory for the new text */ |
---|
[47519e1b] | 548 | if ((e->bufflen + len) > (e->allocated - 5)) { |
---|
[7d4fbcd] | 549 | _owl_editwin_addspace(e); |
---|
| 550 | } |
---|
| 551 | |
---|
| 552 | /* If we're going to insert at the last column do word wrapping, unless it's a \n */ |
---|
[a556caa] | 553 | #if 0 /* XXX */ |
---|
[47519e1b] | 554 | if ((e->buffx + 1 == e->wrapcol) && (c != '\n')) { |
---|
| 555 | ret = _owl_editwin_linewrap_word(e); |
---|
| 556 | if (ret == -1) { |
---|
[7d4fbcd] | 557 | /* we couldn't wrap, insert a hard newline instead */ |
---|
| 558 | owl_editwin_insert_char(e, '\n'); |
---|
| 559 | } |
---|
| 560 | } |
---|
[a556caa] | 561 | #endif |
---|
[7d4fbcd] | 562 | |
---|
| 563 | /* shift all the other characters right */ |
---|
[e9bb404] | 564 | _owl_editwin_insert_bytes(e, len); |
---|
[7d4fbcd] | 565 | |
---|
[47519e1b] | 566 | /* insert the new character */ |
---|
| 567 | for(i = 0; i < len; i++) { |
---|
[a556caa] | 568 | e->buff[e->index + i] = tmp[i]; |
---|
[47519e1b] | 569 | } |
---|
[7d4fbcd] | 570 | |
---|
| 571 | /* advance the cursor */ |
---|
[521bc84] | 572 | oe_set_index(e, e->index + len); |
---|
[7d4fbcd] | 573 | } |
---|
| 574 | |
---|
[c9334b1] | 575 | /* overwrite the character at the current point with 'c' */ |
---|
[bab52da] | 576 | static void owl_editwin_overwrite_char(owl_editwin *e, gunichar c) |
---|
[c9334b1] | 577 | { |
---|
[a556caa] | 578 | int oldlen, newlen, i; |
---|
| 579 | char tmp[6], *t; |
---|
[47519e1b] | 580 | memset(tmp, '\0', 6); |
---|
[830c36e] | 581 | |
---|
[7d4fbcd] | 582 | /* \r is \n */ |
---|
[47519e1b] | 583 | if (c == '\r') { |
---|
| 584 | c = '\n'; |
---|
[7d4fbcd] | 585 | } |
---|
[e20d8179] | 586 | |
---|
[47519e1b] | 587 | if (c == '\n' && e->style == OWL_EDITWIN_STYLE_ONELINE) { |
---|
[7d4fbcd] | 588 | /* perhaps later this will change some state that allows the string |
---|
| 589 | to be read */ |
---|
| 590 | return; |
---|
| 591 | } |
---|
| 592 | |
---|
[47519e1b] | 593 | g_unichar_to_utf8(c, tmp); |
---|
| 594 | newlen = strlen(tmp); |
---|
[7d4fbcd] | 595 | |
---|
[a556caa] | 596 | t = g_utf8_find_next_char(e->buff + e->index, NULL); |
---|
| 597 | oldlen = (t ? (t - (e->buff + e->index)) : 0); |
---|
[7d4fbcd] | 598 | |
---|
[830c36e] | 599 | /* only if we are at the end of the buffer do we create new space here */ |
---|
[a556caa] | 600 | if (e->index == e->bufflen) { |
---|
[830c36e] | 601 | if ((e->bufflen+newlen) > (e->allocated-5)) { |
---|
| 602 | _owl_editwin_addspace(e); |
---|
| 603 | } |
---|
[7d4fbcd] | 604 | } |
---|
[e20d8179] | 605 | /* if not at the end of the buffer, adjust based in char size difference. */ |
---|
[830c36e] | 606 | else if (oldlen > newlen) { |
---|
[47519e1b] | 607 | _owl_editwin_remove_bytes(e, oldlen-newlen); |
---|
| 608 | } |
---|
| 609 | else /* oldlen < newlen */ { |
---|
| 610 | _owl_editwin_insert_bytes(e, newlen-oldlen); |
---|
[7d4fbcd] | 611 | } |
---|
[47519e1b] | 612 | /* Overwrite the old char*/ |
---|
| 613 | for (i = 0; i < newlen; i++) { |
---|
[a556caa] | 614 | e->buff[e->index + i] = tmp[i]; |
---|
[47519e1b] | 615 | } |
---|
[e20d8179] | 616 | |
---|
[47519e1b] | 617 | /* housekeeping */ |
---|
[a556caa] | 618 | if (e->index == e->bufflen) { |
---|
[830c36e] | 619 | e->bufflen += newlen; |
---|
| 620 | e->buff[e->bufflen] = '\0'; |
---|
| 621 | } |
---|
[e20d8179] | 622 | |
---|
[47519e1b] | 623 | /* advance the cursor */ |
---|
[521bc84] | 624 | oe_set_index(e, e->index + newlen); |
---|
[7d4fbcd] | 625 | } |
---|
| 626 | |
---|
[c9334b1] | 627 | /* delete the character at the current point, following chars |
---|
| 628 | * shift left. |
---|
[e20d8179] | 629 | */ |
---|
[c9334b1] | 630 | void owl_editwin_delete_char(owl_editwin *e) |
---|
| 631 | { |
---|
[47519e1b] | 632 | char *p1, *p2; |
---|
| 633 | gunichar c; |
---|
[7d4fbcd] | 634 | |
---|
[47519e1b] | 635 | if (e->bufflen == 0) return; |
---|
[e20d8179] | 636 | |
---|
[a556caa] | 637 | if (e->index == e->bufflen) return; |
---|
[7d4fbcd] | 638 | |
---|
[a556caa] | 639 | p1 = e->buff + e->index; |
---|
[47519e1b] | 640 | p2 = g_utf8_next_char(p1); |
---|
| 641 | c = g_utf8_get_char(p2); |
---|
| 642 | while (g_unichar_ismark(c)) { |
---|
| 643 | p2 = g_utf8_next_char(p2); |
---|
| 644 | c = g_utf8_get_char(p2); |
---|
[7d4fbcd] | 645 | } |
---|
[47519e1b] | 646 | _owl_editwin_remove_bytes(e, p2-p1); |
---|
[7d4fbcd] | 647 | } |
---|
| 648 | |
---|
[c9334b1] | 649 | /* Swap the character at point with the character at point-1 and |
---|
| 650 | * advance the pointer. If point is at beginning of buffer do |
---|
| 651 | * nothing. If point is after the last character swap point-1 with |
---|
[e20d8179] | 652 | * point-2. (Behaves as observed in tcsh and emacs). |
---|
[c9334b1] | 653 | */ |
---|
| 654 | void owl_editwin_transpose_chars(owl_editwin *e) |
---|
| 655 | { |
---|
[47519e1b] | 656 | char *p1, *p2, *p3, *tmp; |
---|
[f2e36b5] | 657 | |
---|
[47519e1b] | 658 | if (e->bufflen == 0) return; |
---|
[e20d8179] | 659 | |
---|
[a556caa] | 660 | if (e->index == e->bufflen) { |
---|
[f2e36b5] | 661 | /* point is after last character */ |
---|
[521bc84] | 662 | oe_set_index(e, e->index - 1); |
---|
[e20d8179] | 663 | } |
---|
[f2e36b5] | 664 | |
---|
[a556caa] | 665 | if (e->index - 1 < e->lock) { |
---|
[f2e36b5] | 666 | /* point is at beginning of buffer, do nothing */ |
---|
| 667 | return; |
---|
| 668 | } |
---|
| 669 | |
---|
[47519e1b] | 670 | /* Transpose two utf-8 unicode glyphs. */ |
---|
[a556caa] | 671 | p1 = e->buff + e->index; |
---|
[47519e1b] | 672 | |
---|
[e20d8179] | 673 | p2 = oe_next_point(e, p1); /* XXX make sure we can't transpose past the end |
---|
| 674 | of the buffer */ |
---|
| 675 | if (p2 == NULL) |
---|
| 676 | return; |
---|
[47519e1b] | 677 | |
---|
[e20d8179] | 678 | p3 = oe_prev_point(e, p1); |
---|
| 679 | if (p3 == NULL) |
---|
| 680 | return; |
---|
[47519e1b] | 681 | |
---|
| 682 | tmp = owl_malloc(p2 - p3 + 5); |
---|
| 683 | *tmp = '\0'; |
---|
| 684 | strncat(tmp, p1, p2 - p1); |
---|
| 685 | strncat(tmp, p3, p1 - p3); |
---|
| 686 | strncpy(p3, tmp, p2 - p3); |
---|
| 687 | owl_free(tmp); |
---|
[521bc84] | 688 | oe_set_index(e, p3 - e->buff); |
---|
[f2e36b5] | 689 | } |
---|
| 690 | |
---|
[c9334b1] | 691 | /* insert 'string' at the current point, later text is shifted |
---|
| 692 | * right |
---|
| 693 | */ |
---|
| 694 | void owl_editwin_insert_string(owl_editwin *e, char *string) |
---|
| 695 | { |
---|
[47519e1b] | 696 | char *p; |
---|
| 697 | gunichar c; |
---|
| 698 | if (!g_utf8_validate(string, -1, NULL)) { |
---|
| 699 | owl_function_debugmsg("owl_editwin_insert_string: received non-utf-8 string."); |
---|
| 700 | return; |
---|
| 701 | } |
---|
| 702 | p = string; |
---|
| 703 | c = g_utf8_get_char(p); |
---|
| 704 | while (c) { |
---|
[fac5463] | 705 | _owl_editwin_process_char(e, c); |
---|
[47519e1b] | 706 | p = g_utf8_next_char(p); |
---|
| 707 | c = g_utf8_get_char(p); |
---|
[7d4fbcd] | 708 | } |
---|
| 709 | } |
---|
| 710 | |
---|
[c9334b1] | 711 | /* write 'string' at the current point, overwriting text that is |
---|
| 712 | * already there |
---|
| 713 | */ |
---|
| 714 | |
---|
[bab52da] | 715 | static void owl_editwin_overwrite_string(owl_editwin *e, char *string) |
---|
[c9334b1] | 716 | { |
---|
[47519e1b] | 717 | char *p; |
---|
| 718 | gunichar c; |
---|
[7d4fbcd] | 719 | |
---|
[47519e1b] | 720 | if (!g_utf8_validate(string, -1, NULL)) { |
---|
| 721 | owl_function_debugmsg("owl_editwin_overwrite_string: received non-utf-8 string."); |
---|
| 722 | return; |
---|
| 723 | } |
---|
| 724 | p = string; |
---|
| 725 | c = g_utf8_get_char(p); |
---|
| 726 | while (c) { |
---|
| 727 | owl_editwin_overwrite_char(e, c); |
---|
| 728 | p = g_utf8_next_char(p); |
---|
| 729 | c = g_utf8_get_char(p); |
---|
[7d4fbcd] | 730 | } |
---|
| 731 | } |
---|
| 732 | |
---|
[a556caa] | 733 | /* We assume index is not set to point to a mid-char */ |
---|
[bab52da] | 734 | static gunichar owl_editwin_get_char_at_point(owl_editwin *e) |
---|
[c9334b1] | 735 | { |
---|
[a556caa] | 736 | return g_utf8_get_char(e->buff + e->index); |
---|
| 737 | } |
---|
[7d4fbcd] | 738 | |
---|
[e20d8179] | 739 | int owl_editwin_point_move(owl_editwin *e, int delta) |
---|
[84027015] | 740 | { |
---|
[e20d8179] | 741 | char *p; |
---|
[19f765d] | 742 | int change, d = 0; |
---|
[a556caa] | 743 | |
---|
| 744 | change = MAX(delta, - delta); |
---|
| 745 | p = e->buff + e->index; |
---|
| 746 | |
---|
| 747 | while (d < change && p != NULL) { |
---|
[e20d8179] | 748 | if (delta > 0) |
---|
| 749 | p = oe_next_point(e, p); |
---|
| 750 | else |
---|
| 751 | p = oe_prev_point(e, p); |
---|
| 752 | if (p != NULL) { |
---|
[521bc84] | 753 | oe_set_index(e, p - e->buff); |
---|
[e20d8179] | 754 | d++; |
---|
[a556caa] | 755 | } |
---|
| 756 | } |
---|
| 757 | |
---|
| 758 | return delta > 0 ? d : -d; |
---|
[84027015] | 759 | } |
---|
| 760 | |
---|
[a556caa] | 761 | int owl_editwin_at_beginning_of_buffer(owl_editwin *e) { |
---|
| 762 | if (e->index == e->lock) |
---|
| 763 | return 1; |
---|
[84027015] | 764 | |
---|
[a556caa] | 765 | return 0; |
---|
| 766 | } |
---|
| 767 | |
---|
| 768 | int owl_at_end_of_buffer(owl_editwin *e) { |
---|
| 769 | if (e->index == e->bufflen) |
---|
| 770 | return 1; |
---|
| 771 | |
---|
| 772 | return 0; |
---|
| 773 | } |
---|
| 774 | |
---|
| 775 | int owl_editwin_at_beginning_of_line(owl_editwin *e) /*noproto*/ |
---|
[c9334b1] | 776 | { |
---|
[a0fbdee] | 777 | oe_excursion x; |
---|
[a556caa] | 778 | int ret; |
---|
[47519e1b] | 779 | |
---|
[a556caa] | 780 | if (owl_editwin_at_beginning_of_buffer(e)) |
---|
| 781 | return 1; |
---|
[47519e1b] | 782 | |
---|
[a0fbdee] | 783 | oe_save_excursion(e, &x); |
---|
[a556caa] | 784 | owl_editwin_point_move(e, -1); |
---|
[bab52da] | 785 | ret = (owl_editwin_get_char_at_point(e) == '\n'); |
---|
[a0fbdee] | 786 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 787 | |
---|
| 788 | return ret; |
---|
| 789 | } |
---|
| 790 | |
---|
[e20d8179] | 791 | static int owl_editwin_is_char_in(owl_editwin *e, char *set) |
---|
[a556caa] | 792 | { |
---|
| 793 | char *p; |
---|
| 794 | /* It would be awfully nice if we could do UTF-8 comparisons */ |
---|
| 795 | for (p = set; *p != 0; p++) |
---|
[bab52da] | 796 | if (owl_editwin_get_char_at_point(e) == *p) |
---|
[a556caa] | 797 | return 1; |
---|
| 798 | return 0; |
---|
| 799 | } |
---|
| 800 | |
---|
[e20d8179] | 801 | int owl_editwin_move_if_in(owl_editwin *e, int delta, char *set) |
---|
[a556caa] | 802 | { |
---|
| 803 | int change, distance = 0; |
---|
[e20d8179] | 804 | while (owl_editwin_is_char_in(e, set)) { |
---|
[a556caa] | 805 | change = owl_editwin_point_move(e, delta); |
---|
| 806 | distance += change; |
---|
| 807 | if (change == 0) |
---|
| 808 | break; |
---|
[47519e1b] | 809 | } |
---|
[a556caa] | 810 | return distance; |
---|
| 811 | } |
---|
| 812 | |
---|
[e20d8179] | 813 | int owl_editwin_move_if_not_in(owl_editwin *e, int delta, 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; |
---|
[7d4fbcd] | 821 | } |
---|
[a556caa] | 822 | return distance; |
---|
[7d4fbcd] | 823 | } |
---|
| 824 | |
---|
[e20d8179] | 825 | int owl_editwin_move_to_beginning_of_line(owl_editwin *e) |
---|
[47519e1b] | 826 | { |
---|
[a556caa] | 827 | int distance = 0; |
---|
[47519e1b] | 828 | |
---|
[a556caa] | 829 | if (!owl_editwin_at_beginning_of_line(e)) { |
---|
| 830 | /* move off the \n if were at the end of a line */ |
---|
| 831 | distance += owl_editwin_point_move(e, -1); |
---|
| 832 | distance += owl_editwin_move_if_not_in(e, -1, "\n"); |
---|
| 833 | if (distance && !owl_editwin_at_beginning_of_buffer(e)) |
---|
| 834 | distance += owl_editwin_point_move(e, 1); |
---|
[47519e1b] | 835 | } |
---|
[77d4402] | 836 | e->goal_column = 0; /* subtleties */ |
---|
[84027015] | 837 | |
---|
[a556caa] | 838 | return distance; |
---|
| 839 | } |
---|
[e20d8179] | 840 | |
---|
| 841 | int owl_editwin_move_to_end_of_line(owl_editwin *e) |
---|
[a556caa] | 842 | { |
---|
| 843 | return owl_editwin_move_if_not_in(e, 1, "\n"); |
---|
[47519e1b] | 844 | } |
---|
| 845 | |
---|
[e20d8179] | 846 | int owl_editwin_line_move(owl_editwin *e, int delta) |
---|
[c9334b1] | 847 | { |
---|
[d7043b4] | 848 | int goal_column, change, ll, distance; |
---|
| 849 | int count = 0; |
---|
[a556caa] | 850 | |
---|
| 851 | change = MAX(delta, -delta); |
---|
| 852 | |
---|
[d7043b4] | 853 | goal_column = e->goal_column; |
---|
| 854 | distance = owl_editwin_move_to_beginning_of_line(e); |
---|
| 855 | goal_column = goal_column == -1 ? -distance : goal_column; |
---|
[a556caa] | 856 | |
---|
| 857 | while(count < change) { |
---|
| 858 | if (delta > 0) { |
---|
| 859 | distance += owl_editwin_move_if_not_in(e, 1, "\n"); |
---|
| 860 | distance += owl_editwin_point_move(e, 1); |
---|
| 861 | } else { |
---|
| 862 | /* I really want to assert delta < 0 here */ |
---|
| 863 | distance += owl_editwin_point_move(e, -1); /* to the newline on |
---|
| 864 | the previous line */ |
---|
| 865 | distance += owl_editwin_move_to_beginning_of_line(e); |
---|
| 866 | } |
---|
| 867 | count++; |
---|
[7d4fbcd] | 868 | } |
---|
[a556caa] | 869 | |
---|
| 870 | distance += (ll = owl_editwin_move_to_end_of_line(e)); |
---|
| 871 | if (ll > goal_column) |
---|
| 872 | distance += owl_editwin_point_move(e, goal_column - ll); |
---|
| 873 | |
---|
| 874 | e->goal_column = goal_column; |
---|
| 875 | |
---|
| 876 | return distance; |
---|
[7d4fbcd] | 877 | } |
---|
| 878 | |
---|
[c9334b1] | 879 | void owl_editwin_backspace(owl_editwin *e) |
---|
| 880 | { |
---|
[7d4fbcd] | 881 | /* delete the char before the current one |
---|
| 882 | * and shift later chars left |
---|
| 883 | */ |
---|
[a556caa] | 884 | if(owl_editwin_point_move(e, -1)) |
---|
[7d4fbcd] | 885 | owl_editwin_delete_char(e); |
---|
| 886 | } |
---|
| 887 | |
---|
[c9334b1] | 888 | void owl_editwin_key_up(owl_editwin *e) |
---|
| 889 | { |
---|
[a556caa] | 890 | owl_editwin_line_move(e, -1); |
---|
[7d4fbcd] | 891 | } |
---|
| 892 | |
---|
[c9334b1] | 893 | void owl_editwin_key_down(owl_editwin *e) |
---|
| 894 | { |
---|
[a556caa] | 895 | owl_editwin_line_move(e, 1); |
---|
[7d4fbcd] | 896 | } |
---|
| 897 | |
---|
[c9334b1] | 898 | void owl_editwin_key_left(owl_editwin *e) |
---|
| 899 | { |
---|
[a556caa] | 900 | owl_editwin_point_move(e, -1); |
---|
[7d4fbcd] | 901 | } |
---|
| 902 | |
---|
[c9334b1] | 903 | void owl_editwin_key_right(owl_editwin *e) |
---|
| 904 | { |
---|
[a556caa] | 905 | owl_editwin_point_move(e, 1); |
---|
[7d4fbcd] | 906 | } |
---|
| 907 | |
---|
[c9334b1] | 908 | void owl_editwin_move_to_nextword(owl_editwin *e) |
---|
| 909 | { |
---|
[7d4fbcd] | 910 | /* if we're starting on a space, find the first non-space */ |
---|
[a556caa] | 911 | owl_editwin_move_if_in(e, 1, WHITESPACE); |
---|
[7d4fbcd] | 912 | |
---|
[a556caa] | 913 | /* now find the end of this word */ |
---|
| 914 | owl_editwin_move_if_not_in(e, 1, WHITESPACE); |
---|
[7d4fbcd] | 915 | } |
---|
| 916 | |
---|
[c9334b1] | 917 | /* go backwards to the last non-space character |
---|
| 918 | */ |
---|
| 919 | void owl_editwin_move_to_previousword(owl_editwin *e) |
---|
| 920 | { |
---|
[a0fbdee] | 921 | oe_excursion x; |
---|
[a556caa] | 922 | int beginning; |
---|
| 923 | /* if in middle of word, beginning of word */ |
---|
| 924 | |
---|
| 925 | /* if at beginning of a word, find beginning of previous word */ |
---|
| 926 | |
---|
[e20d8179] | 927 | if (owl_editwin_is_char_in(e, WHITESPACE)) { |
---|
[a556caa] | 928 | /* if in whitespace past end of word, find a word , the find the beginning*/ |
---|
| 929 | owl_editwin_move_if_in(e, -1, WHITESPACE); /* leaves us on the last |
---|
| 930 | character of the word */ |
---|
[a0fbdee] | 931 | oe_save_excursion(e, &x); |
---|
[a556caa] | 932 | /* are we at the beginning of a word? */ |
---|
| 933 | owl_editwin_point_move(e, -1); |
---|
[e20d8179] | 934 | beginning = owl_editwin_is_char_in(e, WHITESPACE); |
---|
[a0fbdee] | 935 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 936 | if (beginning) |
---|
| 937 | return; |
---|
| 938 | } else { |
---|
| 939 | /* in the middle of the word; */ |
---|
[a0fbdee] | 940 | oe_save_excursion(e, &x); |
---|
[a556caa] | 941 | owl_editwin_point_move(e, -1); |
---|
[e20d8179] | 942 | if (owl_editwin_is_char_in(e, WHITESPACE)) { /* we were at the beginning */ |
---|
[a556caa] | 943 | owl_editwin_move_to_previousword(e); /* previous case */ |
---|
| 944 | return; |
---|
| 945 | } else { |
---|
[a0fbdee] | 946 | oe_restore_excursion(e, &x); |
---|
[7d4fbcd] | 947 | } |
---|
| 948 | } |
---|
[a556caa] | 949 | owl_editwin_move_if_not_in(e, -1, WHITESPACE); |
---|
| 950 | /* will go past */ |
---|
| 951 | if (e->index > e->lock) |
---|
| 952 | owl_editwin_point_move(e, 1); |
---|
[7d4fbcd] | 953 | } |
---|
| 954 | |
---|
[c9334b1] | 955 | void owl_editwin_delete_nextword(owl_editwin *e) |
---|
| 956 | { |
---|
[a0fbdee] | 957 | oe_excursion x; |
---|
[a556caa] | 958 | int end; |
---|
| 959 | |
---|
[a0fbdee] | 960 | oe_save_excursion(e, &x); |
---|
[a556caa] | 961 | owl_editwin_move_to_nextword(e); |
---|
| 962 | end = e->index; |
---|
[a0fbdee] | 963 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 964 | _owl_editwin_remove_bytes(e, end - e->index); |
---|
[7d4fbcd] | 965 | } |
---|
| 966 | |
---|
[c9334b1] | 967 | void owl_editwin_delete_previousword(owl_editwin *e) |
---|
| 968 | { |
---|
[b68f9cd] | 969 | /* go backwards to the last non-space character, then delete chars */ |
---|
[84027015] | 970 | int startpos, endpos; |
---|
[b68f9cd] | 971 | |
---|
[a556caa] | 972 | startpos = e->index; |
---|
[b68f9cd] | 973 | owl_editwin_move_to_previousword(e); |
---|
[a556caa] | 974 | endpos = e->index; |
---|
[84027015] | 975 | _owl_editwin_remove_bytes(e, startpos-endpos); |
---|
[b68f9cd] | 976 | } |
---|
| 977 | |
---|
[a556caa] | 978 | void owl_editwin_move_to_line_end(owl_editwin *e) |
---|
[c9334b1] | 979 | { |
---|
[a556caa] | 980 | owl_editwin_move_to_end_of_line(e); |
---|
[7d4fbcd] | 981 | } |
---|
| 982 | |
---|
[a556caa] | 983 | void owl_editwin_delete_to_endofline(owl_editwin *e) |
---|
[c9334b1] | 984 | { |
---|
[a0fbdee] | 985 | oe_excursion x; |
---|
[a556caa] | 986 | int end; |
---|
| 987 | |
---|
[a0fbdee] | 988 | oe_save_excursion(e, &x); |
---|
[a556caa] | 989 | owl_editwin_move_to_line_end(e); |
---|
| 990 | end = e->index; |
---|
[a0fbdee] | 991 | oe_restore_excursion(e, &x); |
---|
[77d4402] | 992 | if (end - e->index) |
---|
| 993 | _owl_editwin_remove_bytes(e, end - e->index); |
---|
| 994 | else if (end < e->bufflen) |
---|
| 995 | _owl_editwin_remove_bytes(e, 1); |
---|
[7d4fbcd] | 996 | } |
---|
| 997 | |
---|
[c9334b1] | 998 | void owl_editwin_move_to_line_start(owl_editwin *e) |
---|
| 999 | { |
---|
[a556caa] | 1000 | owl_editwin_move_to_beginning_of_line(e); |
---|
[7d4fbcd] | 1001 | } |
---|
| 1002 | |
---|
[c9334b1] | 1003 | void owl_editwin_move_to_end(owl_editwin *e) |
---|
| 1004 | { |
---|
[521bc84] | 1005 | oe_set_index(e, e->bufflen); |
---|
[7d4fbcd] | 1006 | } |
---|
| 1007 | |
---|
[c9334b1] | 1008 | void owl_editwin_move_to_top(owl_editwin *e) |
---|
| 1009 | { |
---|
[521bc84] | 1010 | oe_set_index(e, e->lock); |
---|
[7d4fbcd] | 1011 | } |
---|
| 1012 | |
---|
[c9334b1] | 1013 | void owl_editwin_fill_paragraph(owl_editwin *e) |
---|
| 1014 | { |
---|
[a556caa] | 1015 | #if 0 /* XXX */ |
---|
[a0fbdee] | 1016 | oe_excursion x; |
---|
[7d4fbcd] | 1017 | int i, save; |
---|
| 1018 | |
---|
| 1019 | /* save our starting point */ |
---|
[a0fbdee] | 1020 | oe_save_excursion(e, &x); |
---|
[a556caa] | 1021 | |
---|
| 1022 | save = e->index; |
---|
[7d4fbcd] | 1023 | |
---|
| 1024 | /* scan back to the beginning of this paragraph */ |
---|
| 1025 | for (i=save; i>=e->lock; i--) { |
---|
| 1026 | if ( (i<=e->lock) || |
---|
| 1027 | ((e->buff[i]=='\n') && (e->buff[i-1]=='\n'))) { |
---|
[521bc84] | 1028 | oe_set_index(i + 1); |
---|
[7d4fbcd] | 1029 | break; |
---|
| 1030 | } |
---|
| 1031 | } |
---|
| 1032 | |
---|
| 1033 | /* main loop */ |
---|
| 1034 | while (1) { |
---|
[47519e1b] | 1035 | i = _owl_editwin_get_index_from_xy(e); |
---|
[7d4fbcd] | 1036 | |
---|
| 1037 | /* bail if we hit the end of the buffer */ |
---|
[47519e1b] | 1038 | if (i >= e->bufflen || e->buff[i] == '\0') break; |
---|
[7d4fbcd] | 1039 | |
---|
| 1040 | /* bail if we hit the end of the paragraph */ |
---|
[47519e1b] | 1041 | if (e->buff[i] == '\n' && e->buff[i+1] == '\n') break; |
---|
[7d4fbcd] | 1042 | |
---|
[50e671c] | 1043 | /* bail if we hit a trailing dot on the buffer */ |
---|
| 1044 | if (e->buff[i] == '\n' && e->buff[i+1] == '.' |
---|
| 1045 | && ((i+2) >= e->bufflen || e->buff[i+2] == '\0')) |
---|
| 1046 | break; |
---|
| 1047 | |
---|
[7d4fbcd] | 1048 | /* if we've travelled too far, linewrap */ |
---|
| 1049 | if ((e->buffx) >= e->fillcol) { |
---|
[b2c1bd4] | 1050 | int len = e->bufflen; |
---|
[7d4fbcd] | 1051 | _owl_editwin_linewrap_word(e); |
---|
[b2c1bd4] | 1052 | /* we may have added a character. */ |
---|
| 1053 | if (i < save) save += e->bufflen - len; |
---|
[521bc84] | 1054 | oe_set_index(i); |
---|
[7d4fbcd] | 1055 | } |
---|
| 1056 | |
---|
| 1057 | /* did we hit the end of a line too soon? */ |
---|
[84027015] | 1058 | /* asedeno: Here we replace a newline with a space. We may want to |
---|
| 1059 | consider removing the space if the characters to either side |
---|
| 1060 | are CJK ideograms.*/ |
---|
[47519e1b] | 1061 | i = _owl_editwin_get_index_from_xy(e); |
---|
| 1062 | if (e->buff[i] == '\n' && e->buffx < e->fillcol - 1) { |
---|
[7d4fbcd] | 1063 | /* ********* we need to make sure we don't pull in a word that's too long ***********/ |
---|
| 1064 | e->buff[i]=' '; |
---|
| 1065 | } |
---|
[b2c1bd4] | 1066 | |
---|
[7d4fbcd] | 1067 | /* fix spacing */ |
---|
[47519e1b] | 1068 | i = _owl_editwin_get_index_from_xy(e); |
---|
| 1069 | if (e->buff[i] == ' ' && e->buff[i+1] == ' ') { |
---|
| 1070 | if (e->buff[i-1] == '.' || e->buff[i-1] == '!' || e->buff[i-1] == '?') { |
---|
[7d4fbcd] | 1071 | owl_editwin_key_right(e); |
---|
| 1072 | } else { |
---|
| 1073 | owl_editwin_delete_char(e); |
---|
[84027015] | 1074 | /* if we did this ahead of the save point, adjust it. Changing |
---|
| 1075 | by one is fine here because we're only removing an ASCII |
---|
| 1076 | space. */ |
---|
[47519e1b] | 1077 | if (i < save) save--; |
---|
[7d4fbcd] | 1078 | } |
---|
| 1079 | } else { |
---|
| 1080 | owl_editwin_key_right(e); |
---|
| 1081 | } |
---|
| 1082 | } |
---|
| 1083 | |
---|
| 1084 | /* put cursor back at starting point */ |
---|
[a0fbdee] | 1085 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 1086 | #endif |
---|
[7d4fbcd] | 1087 | } |
---|
| 1088 | |
---|
[cf83b7a] | 1089 | /* returns true if only whitespace remains */ |
---|
[c9334b1] | 1090 | int owl_editwin_is_at_end(owl_editwin *e) |
---|
| 1091 | { |
---|
[a556caa] | 1092 | return (only_whitespace(e->buff + e->index)); |
---|
[217a43e] | 1093 | } |
---|
| 1094 | |
---|
[bab52da] | 1095 | static int owl_editwin_check_dotsend(owl_editwin *e) |
---|
[c9334b1] | 1096 | { |
---|
[47519e1b] | 1097 | char *p, *p_n, *p_p; |
---|
| 1098 | gunichar c; |
---|
[7d4fbcd] | 1099 | |
---|
| 1100 | if (!e->dotsend) return(0); |
---|
[47519e1b] | 1101 | |
---|
| 1102 | p = g_utf8_find_prev_char(e->buff, e->buff + e->bufflen); |
---|
| 1103 | p_n = g_utf8_find_next_char(p, NULL); |
---|
| 1104 | p_p = g_utf8_find_prev_char(e->buff, p); |
---|
| 1105 | c = g_utf8_get_char(p); |
---|
| 1106 | while (p != NULL) { |
---|
| 1107 | if (*p == '.' |
---|
| 1108 | && p_p != NULL && (*p_p == '\n' || *p_p == '\r') |
---|
| 1109 | && p_n != NULL && (*p_n == '\n' || *p_n == '\r')) { |
---|
| 1110 | e->bufflen = p - e->buff; |
---|
| 1111 | e->buff[e->bufflen] = '\0'; |
---|
[7d4fbcd] | 1112 | return(1); |
---|
| 1113 | } |
---|
[47519e1b] | 1114 | if (c != '\0' && !g_unichar_isspace(c)) return(0); |
---|
| 1115 | p_n = p; |
---|
| 1116 | p = p_p; |
---|
| 1117 | c = g_utf8_get_char(p); |
---|
| 1118 | p_p = g_utf8_find_prev_char(e->buff, p); |
---|
[7d4fbcd] | 1119 | } |
---|
| 1120 | return(0); |
---|
| 1121 | } |
---|
| 1122 | |
---|
[fac5463] | 1123 | void owl_editwin_post_process_char(owl_editwin *e, owl_input j) |
---|
[c9334b1] | 1124 | { |
---|
[a556caa] | 1125 | /* XXX force a redisplay? */ |
---|
[fac5463] | 1126 | if ((j.ch==13 || j.ch==10) && owl_editwin_check_dotsend(e)) { |
---|
[7d4fbcd] | 1127 | owl_command_editmulti_done(e); |
---|
| 1128 | return; |
---|
| 1129 | } |
---|
[e20d8179] | 1130 | owl_editwin_redisplay(e, 0); |
---|
[7d4fbcd] | 1131 | } |
---|
| 1132 | |
---|
[bab52da] | 1133 | static void _owl_editwin_process_char(owl_editwin *e, gunichar j) |
---|
[c9334b1] | 1134 | { |
---|
[bd1a1ae] | 1135 | if (!(g_unichar_iscntrl(j) && (j != 10) && (j != 13)) || j==9 ) { |
---|
[7d4fbcd] | 1136 | owl_editwin_insert_char(e, j); |
---|
| 1137 | } |
---|
| 1138 | } |
---|
| 1139 | |
---|
[fac5463] | 1140 | |
---|
| 1141 | void owl_editwin_process_char(owl_editwin *e, owl_input j) |
---|
| 1142 | { |
---|
| 1143 | if (j.ch == ERR) return; |
---|
| 1144 | /* Ignore ncurses control characters. */ |
---|
[e20d8179] | 1145 | if (j.ch < 0x100) { |
---|
[fac5463] | 1146 | _owl_editwin_process_char(e, j.uch); |
---|
| 1147 | } |
---|
| 1148 | } |
---|
| 1149 | |
---|
[c9334b1] | 1150 | char *owl_editwin_get_text(owl_editwin *e) |
---|
| 1151 | { |
---|
[7d4fbcd] | 1152 | return(e->buff+e->lock); |
---|
| 1153 | } |
---|
| 1154 | |
---|
[c9334b1] | 1155 | int owl_editwin_get_numlines(owl_editwin *e) |
---|
| 1156 | { |
---|
[7d4fbcd] | 1157 | return(owl_text_num_lines(e->buff)); |
---|
| 1158 | } |
---|
| 1159 | |
---|
[a556caa] | 1160 | int owl_editwin_get_echochar(owl_editwin *e) { |
---|
| 1161 | return e->echochar; |
---|
| 1162 | } |
---|
[e20d8179] | 1163 | |
---|
| 1164 | void owl_editwin_set_goal_column(owl_editwin *e, int column) |
---|
| 1165 | { |
---|
| 1166 | e->goal_column = column; |
---|
| 1167 | } |
---|
| 1168 | |
---|
| 1169 | int owl_editwin_get_goal_column(owl_editwin *e) |
---|
| 1170 | { |
---|
| 1171 | return e->goal_column; |
---|
| 1172 | } |
---|