[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 int owl_editwin_is_char_in(owl_editwin *e, char *set); |
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| 36 | static void oe_reframe(owl_editwin *e); |
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| 37 | |
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[7d4fbcd] | 38 | #define INCR 5000 |
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| 39 | |
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[a556caa] | 40 | #define WHITESPACE " \n\t" |
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| 41 | |
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| 42 | owl_editwin *owl_editwin_allocate(void) { |
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| 43 | return owl_malloc(sizeof(owl_editwin)); |
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| 44 | } |
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| 45 | |
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[521bc84] | 46 | static void oe_set_index(owl_editwin *e, int index) { |
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| 47 | e->index = index; |
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| 48 | e->goal_column = -1; |
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| 49 | } |
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| 50 | |
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[cf83b7a] | 51 | /* initialize the editwin e. |
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| 52 | * 'win' is an already initialzed curses window that will be used by editwin |
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| 53 | */ |
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[c9334b1] | 54 | void owl_editwin_init(owl_editwin *e, WINDOW *win, int winlines, int wincols, int style, owl_history *hist) |
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| 55 | { |
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[e20d8179] | 56 | e->buff=owl_malloc(INCR); |
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[7d4fbcd] | 57 | e->buff[0]='\0'; |
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| 58 | e->bufflen=0; |
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[10b866d] | 59 | e->hist=hist; |
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[7d4fbcd] | 60 | e->allocated=INCR; |
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[521bc84] | 61 | oe_set_index(e, 0); |
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[a556caa] | 62 | e->goal_column = -1; |
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| 63 | e->topindex=0; |
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[7d4fbcd] | 64 | e->winlines=winlines; |
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| 65 | e->wincols=wincols; |
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[9a6cc40] | 66 | e->fillcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxfillcols(&g)); |
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| 67 | e->wrapcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxwrapcols(&g)); |
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[7d4fbcd] | 68 | e->curswin=win; |
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| 69 | e->style=style; |
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| 70 | if ((style!=OWL_EDITWIN_STYLE_MULTILINE) && |
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| 71 | (style!=OWL_EDITWIN_STYLE_ONELINE)) { |
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| 72 | e->style=OWL_EDITWIN_STYLE_MULTILINE; |
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| 73 | } |
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| 74 | e->lock=0; |
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| 75 | e->dotsend=0; |
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[c9334b1] | 76 | e->echochar='\0'; |
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[e74c01c] | 77 | |
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[af1920fd] | 78 | /* We get initialized multiple times, but we need to hold on to |
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| 79 | the callbacks, so we can't NULL them here. */ |
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[e74c01c] | 80 | /* |
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| 81 | e->command = NULL; |
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| 82 | e->callback = NULL; |
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| 83 | e->cbdata = NULL; |
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| 84 | */ |
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[7d4fbcd] | 85 | if (win) werase(win); |
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| 86 | } |
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| 87 | |
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[c9334b1] | 88 | void owl_editwin_set_curswin(owl_editwin *e, WINDOW *w, int winlines, int wincols) |
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| 89 | { |
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[7d4fbcd] | 90 | e->curswin=w; |
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| 91 | e->winlines=winlines; |
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| 92 | e->wincols=wincols; |
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[9a6cc40] | 93 | e->fillcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxfillcols(&g)); |
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| 94 | e->wrapcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxwrapcols(&g)); |
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[7d4fbcd] | 95 | } |
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| 96 | |
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[c9334b1] | 97 | /* echo the character 'ch' for each normal character keystroke, |
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| 98 | * excepting locktext. This is useful for entering passwords etc. If |
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| 99 | * ch=='\0' characters are echo'd normally |
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| 100 | */ |
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| 101 | void owl_editwin_set_echochar(owl_editwin *e, int ch) |
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| 102 | { |
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| 103 | e->echochar=ch; |
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| 104 | } |
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| 105 | |
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| 106 | WINDOW *owl_editwin_get_curswin(owl_editwin *e) |
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| 107 | { |
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[060b3b4] | 108 | return(e->curswin); |
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[7d4fbcd] | 109 | } |
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| 110 | |
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[c9334b1] | 111 | void owl_editwin_set_history(owl_editwin *e, owl_history *h) |
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| 112 | { |
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[060b3b4] | 113 | e->hist=h; |
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[10b866d] | 114 | } |
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| 115 | |
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[c9334b1] | 116 | owl_history *owl_editwin_get_history(owl_editwin *e) |
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| 117 | { |
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[060b3b4] | 118 | return(e->hist); |
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[10b866d] | 119 | } |
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| 120 | |
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[c9334b1] | 121 | void owl_editwin_set_dotsend(owl_editwin *e) |
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| 122 | { |
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[7d4fbcd] | 123 | e->dotsend=1; |
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| 124 | } |
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| 125 | |
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[e74c01c] | 126 | void owl_editwin_set_command(owl_editwin *e, char *command) { |
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| 127 | if(e->command) owl_free(e->command); |
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| 128 | e->command = owl_strdup(command); |
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| 129 | } |
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| 130 | |
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| 131 | char *owl_editwin_get_command(owl_editwin *e) { |
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| 132 | if(e->command) return e->command; |
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| 133 | return ""; |
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| 134 | } |
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| 135 | |
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| 136 | void owl_editwin_set_callback(owl_editwin *e, void (*cb)(owl_editwin*)) { |
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| 137 | e->callback = cb; |
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| 138 | } |
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| 139 | |
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| 140 | void (*owl_editwin_get_callback(owl_editwin *e))(owl_editwin*) { |
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| 141 | return e->callback; |
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| 142 | } |
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| 143 | |
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| 144 | void owl_editwin_set_cbdata(owl_editwin *e, void *data) { |
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| 145 | e->cbdata = data; |
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| 146 | } |
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| 147 | |
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[a556caa] | 148 | void *owl_editwin_get_cbdata(owl_editwin *e) { |
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[e74c01c] | 149 | return e->cbdata; |
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| 150 | } |
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| 151 | |
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| 152 | void owl_editwin_do_callback(owl_editwin *e) { |
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| 153 | void (*cb)(owl_editwin*); |
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| 154 | cb=owl_editwin_get_callback(e); |
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| 155 | if(!cb) { |
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| 156 | owl_function_error("Internal error: No editwin callback!"); |
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| 157 | } else { |
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[af1920fd] | 158 | /* owl_function_error("text: |%s|", owl_editwin_get_text(e)); */ |
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[e74c01c] | 159 | cb(e); |
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| 160 | } |
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| 161 | } |
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| 162 | |
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[c9334b1] | 163 | int owl_editwin_limit_maxcols(int v, int maxv) |
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| 164 | { |
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[d36f2cb] | 165 | if (maxv > 5 && v > maxv) { |
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[060b3b4] | 166 | return(maxv); |
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[d36f2cb] | 167 | } else { |
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[060b3b4] | 168 | return(v); |
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[d36f2cb] | 169 | } |
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| 170 | } |
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| 171 | |
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[c9334b1] | 172 | /* set text to be 'locked in' at the beginning of the buffer, any |
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| 173 | * previous text (including locked text) will be overwritten |
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| 174 | */ |
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| 175 | void owl_editwin_set_locktext(owl_editwin *e, char *text) |
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| 176 | { |
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[521bc84] | 177 | oe_set_index(e, 0); |
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[7d4fbcd] | 178 | owl_editwin_overwrite_string(e, text); |
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[47519e1b] | 179 | owl_editwin_overwrite_char(e, '\0'); |
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[7d4fbcd] | 180 | e->lock=strlen(text); |
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[521bc84] | 181 | oe_set_index(e, e->lock); |
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[7d4fbcd] | 182 | owl_editwin_redisplay(e, 0); |
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| 183 | } |
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| 184 | |
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[c9334b1] | 185 | int owl_editwin_get_style(owl_editwin *e) |
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| 186 | { |
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[7d4fbcd] | 187 | return(e->style); |
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| 188 | } |
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| 189 | |
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[c9334b1] | 190 | void owl_editwin_new_style(owl_editwin *e, int newstyle, owl_history *h) |
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| 191 | { |
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[7d4fbcd] | 192 | char *ptr; |
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[10b866d] | 193 | |
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| 194 | owl_editwin_set_history(e, h); |
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[7d4fbcd] | 195 | if (e->style==newstyle) return; |
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| 196 | |
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| 197 | if (newstyle==OWL_EDITWIN_STYLE_MULTILINE) { |
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| 198 | e->style=newstyle; |
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| 199 | } else if (newstyle==OWL_EDITWIN_STYLE_ONELINE) { |
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| 200 | e->style=newstyle; |
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| 201 | |
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| 202 | /* nuke everything after the first line */ |
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| 203 | if (e->bufflen > 0) { |
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| 204 | ptr=strchr(e->buff, '\n')-1; |
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| 205 | if (ptr) { |
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| 206 | e->bufflen=ptr - e->buff; |
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| 207 | e->buff[e->bufflen]='\0'; |
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[521bc84] | 208 | oe_set_index(e, 0); |
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[7d4fbcd] | 209 | } |
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| 210 | } |
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| 211 | } |
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| 212 | } |
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| 213 | |
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[c9334b1] | 214 | /* completly reinitialize the buffer */ |
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| 215 | void owl_editwin_fullclear(owl_editwin *e) |
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| 216 | { |
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[7d4fbcd] | 217 | owl_free(e->buff); |
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[10b866d] | 218 | owl_editwin_init(e, e->curswin, e->winlines, e->wincols, e->style, e->hist); |
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[7d4fbcd] | 219 | } |
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| 220 | |
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[c9334b1] | 221 | /* clear all text except for locktext and put the cursor at the |
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| 222 | * beginning |
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| 223 | */ |
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| 224 | void owl_editwin_clear(owl_editwin *e) |
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| 225 | { |
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| 226 | |
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[6073462] | 227 | int lock = e->lock; |
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[10b866d] | 228 | int dotsend=e->dotsend; |
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[7d4fbcd] | 229 | char *locktext=NULL; |
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[cc6f009] | 230 | char echochar=e->echochar; |
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[10b866d] | 231 | |
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[6073462] | 232 | if (lock > 0) { |
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[7d4fbcd] | 233 | locktext=owl_malloc(e->lock+20); |
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| 234 | strncpy(locktext, e->buff, e->lock); |
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| 235 | locktext[e->lock]='\0'; |
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| 236 | } |
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| 237 | |
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| 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 | if (lock > 0) { |
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| 242 | owl_editwin_set_locktext(e, locktext); |
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| 243 | } |
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[10b866d] | 244 | if (dotsend) { |
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| 245 | owl_editwin_set_dotsend(e); |
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| 246 | } |
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[cc6f009] | 247 | if (echochar) { |
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| 248 | owl_editwin_set_echochar(e, echochar); |
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| 249 | } |
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[7d4fbcd] | 250 | |
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| 251 | if (locktext) owl_free(locktext); |
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[6073462] | 252 | |
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[521bc84] | 253 | oe_set_index(e, lock); |
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[7d4fbcd] | 254 | } |
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| 255 | |
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[c9334b1] | 256 | /* malloc more space for the buffer */ |
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| 257 | void _owl_editwin_addspace(owl_editwin *e) |
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| 258 | { |
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[7d4fbcd] | 259 | e->buff=owl_realloc(e->buff, e->allocated+INCR); |
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| 260 | if (!e->buff) { |
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[a556caa] | 261 | /* error *//*XXXXXXXXXXXXXXXX*/ |
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[7d4fbcd] | 262 | return; |
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| 263 | } |
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| 264 | e->allocated+=INCR; |
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| 265 | } |
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| 266 | |
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[c9334b1] | 267 | void owl_editwin_recenter(owl_editwin *e) |
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| 268 | { |
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[a556caa] | 269 | e->topindex = -1; |
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| 270 | } |
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[e20d8179] | 271 | |
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[a0fbdee] | 272 | static void oe_save_excursion(owl_editwin *e, oe_excursion *x) |
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| 273 | { |
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| 274 | x->index = e->index; |
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| 275 | x->goal_column = e->goal_column; |
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| 276 | x->lock = e->lock; |
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| 277 | } |
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| 278 | |
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| 279 | static void oe_restore_excursion(owl_editwin *e, oe_excursion *x) |
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| 280 | { |
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[521bc84] | 281 | oe_set_index(e, x->index); |
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[a0fbdee] | 282 | e->goal_column = x->goal_column; |
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| 283 | e->lock = x->lock; |
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| 284 | } |
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| 285 | |
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[e20d8179] | 286 | static inline char *oe_next_point(owl_editwin *e, char *p) |
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| 287 | { |
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| 288 | char *boundary = e->buff + e->bufflen + 1; |
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| 289 | char *q; |
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| 290 | |
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| 291 | q = g_utf8_find_next_char(p, boundary); |
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| 292 | while (q && g_unichar_ismark(g_utf8_get_char(q))) |
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| 293 | q = g_utf8_find_next_char(q, boundary); |
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| 294 | |
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| 295 | if (q == p) |
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| 296 | return NULL; |
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| 297 | return q; |
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| 298 | } |
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| 299 | |
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| 300 | static inline char *oe_prev_point(owl_editwin *e, char *p) |
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| 301 | { |
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| 302 | char *boundary = e->buff + e->lock; |
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| 303 | |
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| 304 | p = g_utf8_find_prev_char(boundary, p); |
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| 305 | while (p && g_unichar_ismark(g_utf8_get_char(p))) |
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| 306 | p = g_utf8_find_prev_char(boundary, p); |
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| 307 | |
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| 308 | return p; |
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| 309 | } |
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| 310 | |
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[19f765d] | 311 | static int oe_find_display_line(owl_editwin *e, int *x, int index) |
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| 312 | { |
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| 313 | int width = 0, cw; |
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| 314 | gunichar c = -1; |
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| 315 | char *p; |
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| 316 | |
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[77d4402] | 317 | while(1) { |
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| 318 | /* note the position of the dot */ |
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[2021bea] | 319 | if (x != NULL && index == e->index && width < e->wincols) |
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[19f765d] | 320 | *x = width; |
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[77d4402] | 321 | |
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[19f765d] | 322 | /* get the current character */ |
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| 323 | c = g_utf8_get_char(e->buff + index); |
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| 324 | |
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| 325 | /* figure out how wide it is */ |
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| 326 | if (c == 9) /* TAB */ |
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| 327 | cw = TABSIZE - width % TABSIZE; |
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| 328 | else |
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| 329 | cw = mk_wcwidth(c); |
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| 330 | if (cw < 0) /* control characters */ |
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| 331 | cw = 0; |
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| 332 | |
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[77d4402] | 333 | if (width + cw > e->wincols) { |
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| 334 | if (x != NULL && *x == width) |
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| 335 | *x = -1; |
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[19f765d] | 336 | break; |
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[77d4402] | 337 | } |
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[19f765d] | 338 | width += cw; |
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| 339 | |
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| 340 | if (c == '\n') { |
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[77d4402] | 341 | if (width < e->wincols) |
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| 342 | ++index; /* skip the newline */ |
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[19f765d] | 343 | break; |
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| 344 | } |
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| 345 | |
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| 346 | /* find the next character */ |
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| 347 | p = oe_next_point(e, e->buff + index); |
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| 348 | if (p == NULL) { /* we ran off the end */ |
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| 349 | if (x != NULL && e->index > index) |
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| 350 | *x = width + 1; |
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| 351 | break; |
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| 352 | } |
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| 353 | index = p - e->buff; |
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[cedc95c] | 354 | |
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[19f765d] | 355 | } |
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| 356 | return index; |
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| 357 | } |
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| 358 | |
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[e20d8179] | 359 | static void oe_reframe(owl_editwin *e) { |
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[cedc95c] | 360 | oe_excursion x; |
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| 361 | int goal = e->winlines / 2; |
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| 362 | int index; |
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| 363 | int count = 0; |
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| 364 | int point; |
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| 365 | int n, i; |
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| 366 | int last; |
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| 367 | |
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| 368 | oe_save_excursion(e, &x); |
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| 369 | /* step back line-by-line through the buffer until we have >= goal lines of |
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| 370 | display text */ |
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| 371 | e->lock = 0; /* we can (must) tread on the locktext */ |
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| 372 | |
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| 373 | point = e->index; |
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| 374 | last = -1; |
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| 375 | while (count < goal) { |
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| 376 | index = e->index; |
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| 377 | owl_editwin_move_to_beginning_of_line(e); |
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| 378 | if (last == e->index) |
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| 379 | break; |
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| 380 | last = e->index; |
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| 381 | for (n = 0, i = e->index; i < index; n++) |
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| 382 | i = oe_find_display_line(e, NULL, i); |
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| 383 | count += n == 0 ? 1 : n; |
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| 384 | if (count < goal) |
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| 385 | owl_editwin_point_move(e, -1); |
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| 386 | } |
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| 387 | |
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| 388 | e->topindex = e->index; |
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[521bc84] | 389 | /* if we overshot, backtrack */ |
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| 390 | for (n = 0; n < (count - goal); n++) |
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| 391 | e->topindex = oe_find_display_line(e, NULL, e->topindex); |
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[cedc95c] | 392 | |
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| 393 | oe_restore_excursion(e, &x); |
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[7d4fbcd] | 394 | } |
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| 395 | |
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[c9334b1] | 396 | /* regenerate the text on the curses window */ |
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| 397 | /* if update == 1 then do a doupdate(), otherwise do not */ |
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| 398 | void owl_editwin_redisplay(owl_editwin *e, int update) |
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| 399 | { |
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[19f765d] | 400 | int x = -1, y = -1, t; |
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[77d4402] | 401 | int line, index, lineindex, times = 0; |
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[7d4fbcd] | 402 | |
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[bd1a1ae] | 403 | do { |
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[cedc95c] | 404 | werase(e->curswin); |
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| 405 | |
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[bd1a1ae] | 406 | if (e->topindex == -1 || e->index < e->topindex) |
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[e20d8179] | 407 | oe_reframe(e); |
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| 408 | |
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[bd1a1ae] | 409 | line = 0; |
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| 410 | index = e->topindex; |
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| 411 | while(line < e->winlines) { |
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| 412 | lineindex = index; |
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[19f765d] | 413 | t = -1; |
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| 414 | index = oe_find_display_line(e, &t, lineindex); |
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| 415 | if (x == -1 && t != -1) |
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| 416 | x = t, y = line; |
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[bd1a1ae] | 417 | if (index - lineindex) |
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| 418 | mvwaddnstr(e->curswin, line, 0, |
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| 419 | e->buff + lineindex, |
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| 420 | index - lineindex); |
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| 421 | line++; |
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[a556caa] | 422 | } |
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[19f765d] | 423 | if (x == -1) |
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[bd1a1ae] | 424 | e->topindex = -1; /* force a reframe */ |
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[77d4402] | 425 | times++; |
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| 426 | } while(x == -1 && times < 3); |
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[e20d8179] | 427 | |
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[19f765d] | 428 | wmove(e->curswin, y, x); |
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[7d4fbcd] | 429 | wnoutrefresh(e->curswin); |
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[a556caa] | 430 | if (update == 1) |
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[7d4fbcd] | 431 | doupdate(); |
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| 432 | } |
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| 433 | |
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[47519e1b] | 434 | /* Remove n bytes at cursor. */ |
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| 435 | void _owl_editwin_remove_bytes(owl_editwin *e, int n) /*noproto*/ |
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| 436 | { |
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[a556caa] | 437 | int i = e->index + n; |
---|
[47519e1b] | 438 | for (; i < e->bufflen; i++) { |
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| 439 | e->buff[i-n] = e->buff[i]; |
---|
| 440 | } |
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[e20d8179] | 441 | |
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[47519e1b] | 442 | e->bufflen -= n; |
---|
| 443 | e->buff[e->bufflen] = '\0'; |
---|
| 444 | } |
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[830c36e] | 445 | |
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[47519e1b] | 446 | /* Insert n bytes at cursor.*/ |
---|
| 447 | void _owl_editwin_insert_bytes(owl_editwin *e, int n) /*noproto*/ |
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| 448 | { |
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[a556caa] | 449 | int i; |
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[e9bb404] | 450 | |
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[47519e1b] | 451 | if ((e->bufflen + n) > (e->allocated - 5)) { |
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| 452 | _owl_editwin_addspace(e); |
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| 453 | } |
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| 454 | |
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[a556caa] | 455 | if(e->index != e->bufflen) { |
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| 456 | for (i = e->bufflen + n - 1; i > e->index; i--) { |
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[e9bb404] | 457 | e->buff[i] = e->buff[i - n]; |
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| 458 | } |
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[47519e1b] | 459 | } |
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[e9bb404] | 460 | |
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| 461 | e->bufflen += n; |
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| 462 | e->buff[e->bufflen] = '\0'; |
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| 463 | |
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[47519e1b] | 464 | } |
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| 465 | |
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[7d4fbcd] | 466 | |
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[c9334b1] | 467 | /* linewrap the word just before the cursor. |
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| 468 | * returns 0 on success |
---|
| 469 | * returns -1 if we could not wrap. |
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| 470 | */ |
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| 471 | int _owl_editwin_linewrap_word(owl_editwin *e) |
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| 472 | { |
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[84027015] | 473 | int i; |
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| 474 | char *ptr1, *start; |
---|
| 475 | gunichar c; |
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[7d4fbcd] | 476 | |
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[84027015] | 477 | start = e->buff + e->lock; |
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| 478 | |
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[a556caa] | 479 | ptr1 = e->buff + e->index; |
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[84027015] | 480 | ptr1 = g_utf8_find_prev_char(start, ptr1); |
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| 481 | |
---|
| 482 | while (ptr1) { |
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| 483 | c = g_utf8_get_char(ptr1); |
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| 484 | if (owl_util_can_break_after(c)) { |
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| 485 | if (c != ' ') { |
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| 486 | i = ptr1 - e->buff; |
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[521bc84] | 487 | oe_set_index(e, i); |
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[b2c1bd4] | 488 | _owl_editwin_insert_bytes(e, 1); |
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| 489 | /* _owl_editwin_insert_bytes may move e->buff. */ |
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[84027015] | 490 | ptr1 = e->buff + i; |
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| 491 | } |
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| 492 | *ptr1 = '\n'; |
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| 493 | return 0; |
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[7d4fbcd] | 494 | } |
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[2d4ff14] | 495 | else if (c == '\n') { |
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| 496 | return 0; |
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| 497 | } |
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[84027015] | 498 | ptr1 = g_utf8_find_prev_char(start, ptr1); |
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[7d4fbcd] | 499 | } |
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[84027015] | 500 | return -1; |
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[7d4fbcd] | 501 | } |
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| 502 | |
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[c9334b1] | 503 | /* insert a character at the current point (shift later |
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| 504 | * characters over) |
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| 505 | */ |
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[47519e1b] | 506 | void owl_editwin_insert_char(owl_editwin *e, gunichar c) |
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[c9334b1] | 507 | { |
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[a556caa] | 508 | int i, ret, len; |
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[47519e1b] | 509 | char tmp[6]; |
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| 510 | memset(tmp, '\0', 6); |
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[830c36e] | 511 | |
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[7d4fbcd] | 512 | /* \r is \n */ |
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[47519e1b] | 513 | if (c == '\r') { |
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| 514 | c = '\n'; |
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[7d4fbcd] | 515 | } |
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| 516 | |
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[47519e1b] | 517 | if (c == '\n' && e->style == OWL_EDITWIN_STYLE_ONELINE) { |
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[7d4fbcd] | 518 | /* perhaps later this will change some state that allows the string |
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| 519 | to be read */ |
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| 520 | return; |
---|
| 521 | } |
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| 522 | |
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[47519e1b] | 523 | g_unichar_to_utf8(c, tmp); |
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| 524 | len = strlen(tmp); |
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[830c36e] | 525 | |
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[7d4fbcd] | 526 | /* make sure there is enough memory for the new text */ |
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[47519e1b] | 527 | if ((e->bufflen + len) > (e->allocated - 5)) { |
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[7d4fbcd] | 528 | _owl_editwin_addspace(e); |
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| 529 | } |
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| 530 | |
---|
| 531 | /* If we're going to insert at the last column do word wrapping, unless it's a \n */ |
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[a556caa] | 532 | #if 0 /* XXX */ |
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[47519e1b] | 533 | if ((e->buffx + 1 == e->wrapcol) && (c != '\n')) { |
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| 534 | ret = _owl_editwin_linewrap_word(e); |
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| 535 | if (ret == -1) { |
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[7d4fbcd] | 536 | /* we couldn't wrap, insert a hard newline instead */ |
---|
| 537 | owl_editwin_insert_char(e, '\n'); |
---|
| 538 | } |
---|
| 539 | } |
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[a556caa] | 540 | #endif |
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[7d4fbcd] | 541 | |
---|
| 542 | /* shift all the other characters right */ |
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[e9bb404] | 543 | _owl_editwin_insert_bytes(e, len); |
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[7d4fbcd] | 544 | |
---|
[47519e1b] | 545 | /* insert the new character */ |
---|
| 546 | for(i = 0; i < len; i++) { |
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[a556caa] | 547 | e->buff[e->index + i] = tmp[i]; |
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[47519e1b] | 548 | } |
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[7d4fbcd] | 549 | |
---|
| 550 | /* advance the cursor */ |
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[521bc84] | 551 | oe_set_index(e, e->index + len); |
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[7d4fbcd] | 552 | } |
---|
| 553 | |
---|
[c9334b1] | 554 | /* overwrite the character at the current point with 'c' */ |
---|
[47519e1b] | 555 | void owl_editwin_overwrite_char(owl_editwin *e, gunichar c) |
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[c9334b1] | 556 | { |
---|
[a556caa] | 557 | int oldlen, newlen, i; |
---|
| 558 | char tmp[6], *t; |
---|
[47519e1b] | 559 | memset(tmp, '\0', 6); |
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[830c36e] | 560 | |
---|
[7d4fbcd] | 561 | /* \r is \n */ |
---|
[47519e1b] | 562 | if (c == '\r') { |
---|
| 563 | c = '\n'; |
---|
[7d4fbcd] | 564 | } |
---|
[e20d8179] | 565 | |
---|
[47519e1b] | 566 | if (c == '\n' && e->style == OWL_EDITWIN_STYLE_ONELINE) { |
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[7d4fbcd] | 567 | /* perhaps later this will change some state that allows the string |
---|
| 568 | to be read */ |
---|
| 569 | return; |
---|
| 570 | } |
---|
| 571 | |
---|
[47519e1b] | 572 | g_unichar_to_utf8(c, tmp); |
---|
| 573 | newlen = strlen(tmp); |
---|
[7d4fbcd] | 574 | |
---|
[a556caa] | 575 | t = g_utf8_find_next_char(e->buff + e->index, NULL); |
---|
| 576 | oldlen = (t ? (t - (e->buff + e->index)) : 0); |
---|
[7d4fbcd] | 577 | |
---|
[830c36e] | 578 | /* only if we are at the end of the buffer do we create new space here */ |
---|
[a556caa] | 579 | if (e->index == e->bufflen) { |
---|
[830c36e] | 580 | if ((e->bufflen+newlen) > (e->allocated-5)) { |
---|
| 581 | _owl_editwin_addspace(e); |
---|
| 582 | } |
---|
[7d4fbcd] | 583 | } |
---|
[e20d8179] | 584 | /* if not at the end of the buffer, adjust based in char size difference. */ |
---|
[830c36e] | 585 | else if (oldlen > newlen) { |
---|
[47519e1b] | 586 | _owl_editwin_remove_bytes(e, oldlen-newlen); |
---|
| 587 | } |
---|
| 588 | else /* oldlen < newlen */ { |
---|
| 589 | _owl_editwin_insert_bytes(e, newlen-oldlen); |
---|
[7d4fbcd] | 590 | } |
---|
[47519e1b] | 591 | /* Overwrite the old char*/ |
---|
| 592 | for (i = 0; i < newlen; i++) { |
---|
[a556caa] | 593 | e->buff[e->index + i] = tmp[i]; |
---|
[47519e1b] | 594 | } |
---|
[e20d8179] | 595 | |
---|
[47519e1b] | 596 | /* housekeeping */ |
---|
[a556caa] | 597 | if (e->index == e->bufflen) { |
---|
[830c36e] | 598 | e->bufflen += newlen; |
---|
| 599 | e->buff[e->bufflen] = '\0'; |
---|
| 600 | } |
---|
[e20d8179] | 601 | |
---|
[47519e1b] | 602 | /* advance the cursor */ |
---|
[521bc84] | 603 | oe_set_index(e, e->index + newlen); |
---|
[7d4fbcd] | 604 | } |
---|
| 605 | |
---|
[c9334b1] | 606 | /* delete the character at the current point, following chars |
---|
| 607 | * shift left. |
---|
[e20d8179] | 608 | */ |
---|
[c9334b1] | 609 | void owl_editwin_delete_char(owl_editwin *e) |
---|
| 610 | { |
---|
[47519e1b] | 611 | char *p1, *p2; |
---|
| 612 | gunichar c; |
---|
[7d4fbcd] | 613 | |
---|
[47519e1b] | 614 | if (e->bufflen == 0) return; |
---|
[e20d8179] | 615 | |
---|
[a556caa] | 616 | if (e->index == e->bufflen) return; |
---|
[7d4fbcd] | 617 | |
---|
[a556caa] | 618 | p1 = e->buff + e->index; |
---|
[47519e1b] | 619 | p2 = g_utf8_next_char(p1); |
---|
| 620 | c = g_utf8_get_char(p2); |
---|
| 621 | while (g_unichar_ismark(c)) { |
---|
| 622 | p2 = g_utf8_next_char(p2); |
---|
| 623 | c = g_utf8_get_char(p2); |
---|
[7d4fbcd] | 624 | } |
---|
[47519e1b] | 625 | _owl_editwin_remove_bytes(e, p2-p1); |
---|
[7d4fbcd] | 626 | } |
---|
| 627 | |
---|
[c9334b1] | 628 | /* Swap the character at point with the character at point-1 and |
---|
| 629 | * advance the pointer. If point is at beginning of buffer do |
---|
| 630 | * nothing. If point is after the last character swap point-1 with |
---|
[e20d8179] | 631 | * point-2. (Behaves as observed in tcsh and emacs). |
---|
[c9334b1] | 632 | */ |
---|
| 633 | void owl_editwin_transpose_chars(owl_editwin *e) |
---|
| 634 | { |
---|
[47519e1b] | 635 | char *p1, *p2, *p3, *tmp; |
---|
[f2e36b5] | 636 | |
---|
[47519e1b] | 637 | if (e->bufflen == 0) return; |
---|
[e20d8179] | 638 | |
---|
[a556caa] | 639 | if (e->index == e->bufflen) { |
---|
[f2e36b5] | 640 | /* point is after last character */ |
---|
[521bc84] | 641 | oe_set_index(e, e->index - 1); |
---|
[e20d8179] | 642 | } |
---|
[f2e36b5] | 643 | |
---|
[a556caa] | 644 | if (e->index - 1 < e->lock) { |
---|
[f2e36b5] | 645 | /* point is at beginning of buffer, do nothing */ |
---|
| 646 | return; |
---|
| 647 | } |
---|
| 648 | |
---|
[47519e1b] | 649 | /* Transpose two utf-8 unicode glyphs. */ |
---|
[a556caa] | 650 | p1 = e->buff + e->index; |
---|
[47519e1b] | 651 | |
---|
[e20d8179] | 652 | p2 = oe_next_point(e, p1); /* XXX make sure we can't transpose past the end |
---|
| 653 | of the buffer */ |
---|
| 654 | if (p2 == NULL) |
---|
| 655 | return; |
---|
[47519e1b] | 656 | |
---|
[e20d8179] | 657 | p3 = oe_prev_point(e, p1); |
---|
| 658 | if (p3 == NULL) |
---|
| 659 | return; |
---|
[47519e1b] | 660 | |
---|
| 661 | tmp = owl_malloc(p2 - p3 + 5); |
---|
| 662 | *tmp = '\0'; |
---|
| 663 | strncat(tmp, p1, p2 - p1); |
---|
| 664 | strncat(tmp, p3, p1 - p3); |
---|
| 665 | strncpy(p3, tmp, p2 - p3); |
---|
| 666 | owl_free(tmp); |
---|
[521bc84] | 667 | oe_set_index(e, p3 - e->buff); |
---|
[f2e36b5] | 668 | } |
---|
| 669 | |
---|
[c9334b1] | 670 | /* insert 'string' at the current point, later text is shifted |
---|
| 671 | * right |
---|
| 672 | */ |
---|
| 673 | void owl_editwin_insert_string(owl_editwin *e, char *string) |
---|
| 674 | { |
---|
[47519e1b] | 675 | char *p; |
---|
| 676 | gunichar c; |
---|
| 677 | if (!g_utf8_validate(string, -1, NULL)) { |
---|
| 678 | owl_function_debugmsg("owl_editwin_insert_string: received non-utf-8 string."); |
---|
| 679 | return; |
---|
| 680 | } |
---|
| 681 | p = string; |
---|
| 682 | c = g_utf8_get_char(p); |
---|
| 683 | while (c) { |
---|
[fac5463] | 684 | _owl_editwin_process_char(e, c); |
---|
[47519e1b] | 685 | p = g_utf8_next_char(p); |
---|
| 686 | c = g_utf8_get_char(p); |
---|
[7d4fbcd] | 687 | } |
---|
| 688 | } |
---|
| 689 | |
---|
[c9334b1] | 690 | /* write 'string' at the current point, overwriting text that is |
---|
| 691 | * already there |
---|
| 692 | */ |
---|
| 693 | |
---|
| 694 | void owl_editwin_overwrite_string(owl_editwin *e, char *string) |
---|
| 695 | { |
---|
[47519e1b] | 696 | char *p; |
---|
| 697 | gunichar c; |
---|
[7d4fbcd] | 698 | |
---|
[47519e1b] | 699 | if (!g_utf8_validate(string, -1, NULL)) { |
---|
| 700 | owl_function_debugmsg("owl_editwin_overwrite_string: received non-utf-8 string."); |
---|
| 701 | return; |
---|
| 702 | } |
---|
| 703 | p = string; |
---|
| 704 | c = g_utf8_get_char(p); |
---|
| 705 | while (c) { |
---|
| 706 | owl_editwin_overwrite_char(e, c); |
---|
| 707 | p = g_utf8_next_char(p); |
---|
| 708 | c = g_utf8_get_char(p); |
---|
[7d4fbcd] | 709 | } |
---|
| 710 | } |
---|
| 711 | |
---|
[a556caa] | 712 | /* We assume index is not set to point to a mid-char */ |
---|
| 713 | gunichar _owl_editwin_get_char_at_point(owl_editwin *e) |
---|
[c9334b1] | 714 | { |
---|
[a556caa] | 715 | return g_utf8_get_char(e->buff + e->index); |
---|
| 716 | } |
---|
[7d4fbcd] | 717 | |
---|
[e20d8179] | 718 | int owl_editwin_point_move(owl_editwin *e, int delta) |
---|
[84027015] | 719 | { |
---|
[e20d8179] | 720 | char *p; |
---|
[19f765d] | 721 | int change, d = 0; |
---|
[a556caa] | 722 | |
---|
| 723 | change = MAX(delta, - delta); |
---|
| 724 | p = e->buff + e->index; |
---|
| 725 | |
---|
| 726 | while (d < change && p != NULL) { |
---|
[e20d8179] | 727 | if (delta > 0) |
---|
| 728 | p = oe_next_point(e, p); |
---|
| 729 | else |
---|
| 730 | p = oe_prev_point(e, p); |
---|
| 731 | if (p != NULL) { |
---|
[521bc84] | 732 | oe_set_index(e, p - e->buff); |
---|
[e20d8179] | 733 | d++; |
---|
[a556caa] | 734 | } |
---|
| 735 | } |
---|
| 736 | |
---|
| 737 | return delta > 0 ? d : -d; |
---|
[84027015] | 738 | } |
---|
| 739 | |
---|
[a556caa] | 740 | int owl_editwin_at_beginning_of_buffer(owl_editwin *e) { |
---|
| 741 | if (e->index == e->lock) |
---|
| 742 | return 1; |
---|
[84027015] | 743 | |
---|
[a556caa] | 744 | return 0; |
---|
| 745 | } |
---|
| 746 | |
---|
| 747 | int owl_at_end_of_buffer(owl_editwin *e) { |
---|
| 748 | if (e->index == e->bufflen) |
---|
| 749 | return 1; |
---|
| 750 | |
---|
| 751 | return 0; |
---|
| 752 | } |
---|
| 753 | |
---|
| 754 | int owl_editwin_at_beginning_of_line(owl_editwin *e) /*noproto*/ |
---|
[c9334b1] | 755 | { |
---|
[a0fbdee] | 756 | oe_excursion x; |
---|
[a556caa] | 757 | int ret; |
---|
[47519e1b] | 758 | |
---|
[a556caa] | 759 | if (owl_editwin_at_beginning_of_buffer(e)) |
---|
| 760 | return 1; |
---|
[47519e1b] | 761 | |
---|
[a0fbdee] | 762 | oe_save_excursion(e, &x); |
---|
[a556caa] | 763 | owl_editwin_point_move(e, -1); |
---|
| 764 | ret = (_owl_editwin_get_char_at_point(e) == '\n'); |
---|
[a0fbdee] | 765 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 766 | |
---|
| 767 | return ret; |
---|
| 768 | } |
---|
| 769 | |
---|
[e20d8179] | 770 | static int owl_editwin_is_char_in(owl_editwin *e, char *set) |
---|
[a556caa] | 771 | { |
---|
| 772 | char *p; |
---|
| 773 | /* It would be awfully nice if we could do UTF-8 comparisons */ |
---|
| 774 | for (p = set; *p != 0; p++) |
---|
| 775 | if (_owl_editwin_get_char_at_point(e) == *p) |
---|
| 776 | return 1; |
---|
| 777 | return 0; |
---|
| 778 | } |
---|
| 779 | |
---|
[e20d8179] | 780 | int owl_editwin_move_if_in(owl_editwin *e, int delta, char *set) |
---|
[a556caa] | 781 | { |
---|
| 782 | int change, distance = 0; |
---|
[e20d8179] | 783 | while (owl_editwin_is_char_in(e, set)) { |
---|
[a556caa] | 784 | change = owl_editwin_point_move(e, delta); |
---|
| 785 | distance += change; |
---|
| 786 | if (change == 0) |
---|
| 787 | break; |
---|
[47519e1b] | 788 | } |
---|
[a556caa] | 789 | return distance; |
---|
| 790 | } |
---|
| 791 | |
---|
[e20d8179] | 792 | int owl_editwin_move_if_not_in(owl_editwin *e, int delta, char *set) |
---|
[a556caa] | 793 | { |
---|
| 794 | int change, distance = 0; |
---|
[e20d8179] | 795 | while (!owl_editwin_is_char_in(e, set)) { |
---|
[a556caa] | 796 | change = owl_editwin_point_move(e, delta); |
---|
| 797 | distance += change; |
---|
| 798 | if (change == 0) |
---|
| 799 | break; |
---|
[7d4fbcd] | 800 | } |
---|
[a556caa] | 801 | return distance; |
---|
[7d4fbcd] | 802 | } |
---|
| 803 | |
---|
[e20d8179] | 804 | int owl_editwin_move_to_beginning_of_line(owl_editwin *e) |
---|
[47519e1b] | 805 | { |
---|
[a556caa] | 806 | int distance = 0; |
---|
[47519e1b] | 807 | |
---|
[a556caa] | 808 | if (!owl_editwin_at_beginning_of_line(e)) { |
---|
| 809 | /* move off the \n if were at the end of a line */ |
---|
| 810 | distance += owl_editwin_point_move(e, -1); |
---|
| 811 | distance += owl_editwin_move_if_not_in(e, -1, "\n"); |
---|
| 812 | if (distance && !owl_editwin_at_beginning_of_buffer(e)) |
---|
| 813 | distance += owl_editwin_point_move(e, 1); |
---|
[47519e1b] | 814 | } |
---|
[77d4402] | 815 | e->goal_column = 0; /* subtleties */ |
---|
[84027015] | 816 | |
---|
[a556caa] | 817 | return distance; |
---|
| 818 | } |
---|
[e20d8179] | 819 | |
---|
| 820 | int owl_editwin_move_to_end_of_line(owl_editwin *e) |
---|
[a556caa] | 821 | { |
---|
| 822 | return owl_editwin_move_if_not_in(e, 1, "\n"); |
---|
[47519e1b] | 823 | } |
---|
| 824 | |
---|
[e20d8179] | 825 | int owl_editwin_line_move(owl_editwin *e, int delta) |
---|
[c9334b1] | 826 | { |
---|
[d7043b4] | 827 | int goal_column, change, ll, distance; |
---|
| 828 | int count = 0; |
---|
[a556caa] | 829 | |
---|
| 830 | change = MAX(delta, -delta); |
---|
| 831 | |
---|
[d7043b4] | 832 | goal_column = e->goal_column; |
---|
| 833 | distance = owl_editwin_move_to_beginning_of_line(e); |
---|
| 834 | goal_column = goal_column == -1 ? -distance : goal_column; |
---|
[a556caa] | 835 | |
---|
| 836 | while(count < change) { |
---|
| 837 | if (delta > 0) { |
---|
| 838 | distance += owl_editwin_move_if_not_in(e, 1, "\n"); |
---|
| 839 | distance += owl_editwin_point_move(e, 1); |
---|
| 840 | } else { |
---|
| 841 | /* I really want to assert delta < 0 here */ |
---|
| 842 | distance += owl_editwin_point_move(e, -1); /* to the newline on |
---|
| 843 | the previous line */ |
---|
| 844 | distance += owl_editwin_move_to_beginning_of_line(e); |
---|
| 845 | } |
---|
| 846 | count++; |
---|
[7d4fbcd] | 847 | } |
---|
[a556caa] | 848 | |
---|
| 849 | distance += (ll = owl_editwin_move_to_end_of_line(e)); |
---|
| 850 | if (ll > goal_column) |
---|
| 851 | distance += owl_editwin_point_move(e, goal_column - ll); |
---|
| 852 | |
---|
| 853 | e->goal_column = goal_column; |
---|
| 854 | |
---|
| 855 | return distance; |
---|
[7d4fbcd] | 856 | } |
---|
| 857 | |
---|
[c9334b1] | 858 | void owl_editwin_backspace(owl_editwin *e) |
---|
| 859 | { |
---|
[7d4fbcd] | 860 | /* delete the char before the current one |
---|
| 861 | * and shift later chars left |
---|
| 862 | */ |
---|
[a556caa] | 863 | if(owl_editwin_point_move(e, -1)) |
---|
[7d4fbcd] | 864 | owl_editwin_delete_char(e); |
---|
| 865 | } |
---|
| 866 | |
---|
[c9334b1] | 867 | void owl_editwin_key_up(owl_editwin *e) |
---|
| 868 | { |
---|
[a556caa] | 869 | owl_editwin_line_move(e, -1); |
---|
[7d4fbcd] | 870 | } |
---|
| 871 | |
---|
[c9334b1] | 872 | void owl_editwin_key_down(owl_editwin *e) |
---|
| 873 | { |
---|
[a556caa] | 874 | owl_editwin_line_move(e, 1); |
---|
[7d4fbcd] | 875 | } |
---|
| 876 | |
---|
[c9334b1] | 877 | void owl_editwin_key_left(owl_editwin *e) |
---|
| 878 | { |
---|
[a556caa] | 879 | owl_editwin_point_move(e, -1); |
---|
[7d4fbcd] | 880 | } |
---|
| 881 | |
---|
[c9334b1] | 882 | void owl_editwin_key_right(owl_editwin *e) |
---|
| 883 | { |
---|
[a556caa] | 884 | owl_editwin_point_move(e, 1); |
---|
[7d4fbcd] | 885 | } |
---|
| 886 | |
---|
[c9334b1] | 887 | void owl_editwin_move_to_nextword(owl_editwin *e) |
---|
| 888 | { |
---|
[7d4fbcd] | 889 | /* if we're starting on a space, find the first non-space */ |
---|
[a556caa] | 890 | owl_editwin_move_if_in(e, 1, WHITESPACE); |
---|
[7d4fbcd] | 891 | |
---|
[a556caa] | 892 | /* now find the end of this word */ |
---|
| 893 | owl_editwin_move_if_not_in(e, 1, WHITESPACE); |
---|
[7d4fbcd] | 894 | } |
---|
| 895 | |
---|
[c9334b1] | 896 | /* go backwards to the last non-space character |
---|
| 897 | */ |
---|
| 898 | void owl_editwin_move_to_previousword(owl_editwin *e) |
---|
| 899 | { |
---|
[a0fbdee] | 900 | oe_excursion x; |
---|
[a556caa] | 901 | int beginning; |
---|
| 902 | /* if in middle of word, beginning of word */ |
---|
| 903 | |
---|
| 904 | /* if at beginning of a word, find beginning of previous word */ |
---|
| 905 | |
---|
[e20d8179] | 906 | if (owl_editwin_is_char_in(e, WHITESPACE)) { |
---|
[a556caa] | 907 | /* if in whitespace past end of word, find a word , the find the beginning*/ |
---|
| 908 | owl_editwin_move_if_in(e, -1, WHITESPACE); /* leaves us on the last |
---|
| 909 | character of the word */ |
---|
[a0fbdee] | 910 | oe_save_excursion(e, &x); |
---|
[a556caa] | 911 | /* are we at the beginning of a word? */ |
---|
| 912 | owl_editwin_point_move(e, -1); |
---|
[e20d8179] | 913 | beginning = owl_editwin_is_char_in(e, WHITESPACE); |
---|
[a0fbdee] | 914 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 915 | if (beginning) |
---|
| 916 | return; |
---|
| 917 | } else { |
---|
| 918 | /* in the middle of the word; */ |
---|
[a0fbdee] | 919 | oe_save_excursion(e, &x); |
---|
[a556caa] | 920 | owl_editwin_point_move(e, -1); |
---|
[e20d8179] | 921 | if (owl_editwin_is_char_in(e, WHITESPACE)) { /* we were at the beginning */ |
---|
[a556caa] | 922 | owl_editwin_move_to_previousword(e); /* previous case */ |
---|
| 923 | return; |
---|
| 924 | } else { |
---|
[a0fbdee] | 925 | oe_restore_excursion(e, &x); |
---|
[7d4fbcd] | 926 | } |
---|
| 927 | } |
---|
[a556caa] | 928 | owl_editwin_move_if_not_in(e, -1, WHITESPACE); |
---|
| 929 | /* will go past */ |
---|
| 930 | if (e->index > e->lock) |
---|
| 931 | owl_editwin_point_move(e, 1); |
---|
[7d4fbcd] | 932 | } |
---|
| 933 | |
---|
[c9334b1] | 934 | void owl_editwin_delete_nextword(owl_editwin *e) |
---|
| 935 | { |
---|
[a0fbdee] | 936 | oe_excursion x; |
---|
[a556caa] | 937 | int end; |
---|
| 938 | |
---|
[a0fbdee] | 939 | oe_save_excursion(e, &x); |
---|
[a556caa] | 940 | owl_editwin_move_to_nextword(e); |
---|
| 941 | end = e->index; |
---|
[a0fbdee] | 942 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 943 | _owl_editwin_remove_bytes(e, end - e->index); |
---|
[7d4fbcd] | 944 | } |
---|
| 945 | |
---|
[c9334b1] | 946 | void owl_editwin_delete_previousword(owl_editwin *e) |
---|
| 947 | { |
---|
[b68f9cd] | 948 | /* go backwards to the last non-space character, then delete chars */ |
---|
[84027015] | 949 | int startpos, endpos; |
---|
[b68f9cd] | 950 | |
---|
[a556caa] | 951 | startpos = e->index; |
---|
[b68f9cd] | 952 | owl_editwin_move_to_previousword(e); |
---|
[a556caa] | 953 | endpos = e->index; |
---|
[84027015] | 954 | _owl_editwin_remove_bytes(e, startpos-endpos); |
---|
[b68f9cd] | 955 | } |
---|
| 956 | |
---|
[a556caa] | 957 | void owl_editwin_move_to_line_end(owl_editwin *e) |
---|
[c9334b1] | 958 | { |
---|
[a556caa] | 959 | owl_editwin_move_to_end_of_line(e); |
---|
[7d4fbcd] | 960 | } |
---|
| 961 | |
---|
[a556caa] | 962 | void owl_editwin_delete_to_endofline(owl_editwin *e) |
---|
[c9334b1] | 963 | { |
---|
[a0fbdee] | 964 | oe_excursion x; |
---|
[a556caa] | 965 | int end; |
---|
| 966 | |
---|
[a0fbdee] | 967 | oe_save_excursion(e, &x); |
---|
[a556caa] | 968 | owl_editwin_move_to_line_end(e); |
---|
| 969 | end = e->index; |
---|
[a0fbdee] | 970 | oe_restore_excursion(e, &x); |
---|
[77d4402] | 971 | if (end - e->index) |
---|
| 972 | _owl_editwin_remove_bytes(e, end - e->index); |
---|
| 973 | else if (end < e->bufflen) |
---|
| 974 | _owl_editwin_remove_bytes(e, 1); |
---|
[7d4fbcd] | 975 | } |
---|
| 976 | |
---|
[c9334b1] | 977 | void owl_editwin_move_to_line_start(owl_editwin *e) |
---|
| 978 | { |
---|
[a556caa] | 979 | owl_editwin_move_to_beginning_of_line(e); |
---|
[7d4fbcd] | 980 | } |
---|
| 981 | |
---|
[c9334b1] | 982 | void owl_editwin_move_to_end(owl_editwin *e) |
---|
| 983 | { |
---|
[521bc84] | 984 | oe_set_index(e, e->bufflen); |
---|
[7d4fbcd] | 985 | } |
---|
| 986 | |
---|
[c9334b1] | 987 | void owl_editwin_move_to_top(owl_editwin *e) |
---|
| 988 | { |
---|
[521bc84] | 989 | oe_set_index(e, e->lock); |
---|
[7d4fbcd] | 990 | } |
---|
| 991 | |
---|
[c9334b1] | 992 | void owl_editwin_fill_paragraph(owl_editwin *e) |
---|
| 993 | { |
---|
[a556caa] | 994 | #if 0 /* XXX */ |
---|
[a0fbdee] | 995 | oe_excursion x; |
---|
[7d4fbcd] | 996 | int i, save; |
---|
| 997 | |
---|
| 998 | /* save our starting point */ |
---|
[a0fbdee] | 999 | oe_save_excursion(e, &x); |
---|
[a556caa] | 1000 | |
---|
| 1001 | save = e->index; |
---|
[7d4fbcd] | 1002 | |
---|
| 1003 | /* scan back to the beginning of this paragraph */ |
---|
| 1004 | for (i=save; i>=e->lock; i--) { |
---|
| 1005 | if ( (i<=e->lock) || |
---|
| 1006 | ((e->buff[i]=='\n') && (e->buff[i-1]=='\n'))) { |
---|
[521bc84] | 1007 | oe_set_index(i + 1); |
---|
[7d4fbcd] | 1008 | break; |
---|
| 1009 | } |
---|
| 1010 | } |
---|
| 1011 | |
---|
| 1012 | /* main loop */ |
---|
| 1013 | while (1) { |
---|
[47519e1b] | 1014 | i = _owl_editwin_get_index_from_xy(e); |
---|
[7d4fbcd] | 1015 | |
---|
| 1016 | /* bail if we hit the end of the buffer */ |
---|
[47519e1b] | 1017 | if (i >= e->bufflen || e->buff[i] == '\0') break; |
---|
[7d4fbcd] | 1018 | |
---|
| 1019 | /* bail if we hit the end of the paragraph */ |
---|
[47519e1b] | 1020 | if (e->buff[i] == '\n' && e->buff[i+1] == '\n') break; |
---|
[7d4fbcd] | 1021 | |
---|
[50e671c] | 1022 | /* bail if we hit a trailing dot on the buffer */ |
---|
| 1023 | if (e->buff[i] == '\n' && e->buff[i+1] == '.' |
---|
| 1024 | && ((i+2) >= e->bufflen || e->buff[i+2] == '\0')) |
---|
| 1025 | break; |
---|
| 1026 | |
---|
[7d4fbcd] | 1027 | /* if we've travelled too far, linewrap */ |
---|
| 1028 | if ((e->buffx) >= e->fillcol) { |
---|
[b2c1bd4] | 1029 | int len = e->bufflen; |
---|
[7d4fbcd] | 1030 | _owl_editwin_linewrap_word(e); |
---|
[b2c1bd4] | 1031 | /* we may have added a character. */ |
---|
| 1032 | if (i < save) save += e->bufflen - len; |
---|
[521bc84] | 1033 | oe_set_index(i); |
---|
[7d4fbcd] | 1034 | } |
---|
| 1035 | |
---|
| 1036 | /* did we hit the end of a line too soon? */ |
---|
[84027015] | 1037 | /* asedeno: Here we replace a newline with a space. We may want to |
---|
| 1038 | consider removing the space if the characters to either side |
---|
| 1039 | are CJK ideograms.*/ |
---|
[47519e1b] | 1040 | i = _owl_editwin_get_index_from_xy(e); |
---|
| 1041 | if (e->buff[i] == '\n' && e->buffx < e->fillcol - 1) { |
---|
[7d4fbcd] | 1042 | /* ********* we need to make sure we don't pull in a word that's too long ***********/ |
---|
| 1043 | e->buff[i]=' '; |
---|
| 1044 | } |
---|
[b2c1bd4] | 1045 | |
---|
[7d4fbcd] | 1046 | /* fix spacing */ |
---|
[47519e1b] | 1047 | i = _owl_editwin_get_index_from_xy(e); |
---|
| 1048 | if (e->buff[i] == ' ' && e->buff[i+1] == ' ') { |
---|
| 1049 | if (e->buff[i-1] == '.' || e->buff[i-1] == '!' || e->buff[i-1] == '?') { |
---|
[7d4fbcd] | 1050 | owl_editwin_key_right(e); |
---|
| 1051 | } else { |
---|
| 1052 | owl_editwin_delete_char(e); |
---|
[84027015] | 1053 | /* if we did this ahead of the save point, adjust it. Changing |
---|
| 1054 | by one is fine here because we're only removing an ASCII |
---|
| 1055 | space. */ |
---|
[47519e1b] | 1056 | if (i < save) save--; |
---|
[7d4fbcd] | 1057 | } |
---|
| 1058 | } else { |
---|
| 1059 | owl_editwin_key_right(e); |
---|
| 1060 | } |
---|
| 1061 | } |
---|
| 1062 | |
---|
| 1063 | /* put cursor back at starting point */ |
---|
[a0fbdee] | 1064 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 1065 | #endif |
---|
[7d4fbcd] | 1066 | } |
---|
| 1067 | |
---|
[cf83b7a] | 1068 | /* returns true if only whitespace remains */ |
---|
[c9334b1] | 1069 | int owl_editwin_is_at_end(owl_editwin *e) |
---|
| 1070 | { |
---|
[a556caa] | 1071 | return (only_whitespace(e->buff + e->index)); |
---|
[217a43e] | 1072 | } |
---|
| 1073 | |
---|
[c9334b1] | 1074 | int owl_editwin_check_dotsend(owl_editwin *e) |
---|
| 1075 | { |
---|
[47519e1b] | 1076 | char *p, *p_n, *p_p; |
---|
| 1077 | gunichar c; |
---|
[7d4fbcd] | 1078 | |
---|
| 1079 | if (!e->dotsend) return(0); |
---|
[47519e1b] | 1080 | |
---|
| 1081 | p = g_utf8_find_prev_char(e->buff, e->buff + e->bufflen); |
---|
| 1082 | p_n = g_utf8_find_next_char(p, NULL); |
---|
| 1083 | p_p = g_utf8_find_prev_char(e->buff, p); |
---|
| 1084 | c = g_utf8_get_char(p); |
---|
| 1085 | while (p != NULL) { |
---|
| 1086 | if (*p == '.' |
---|
| 1087 | && p_p != NULL && (*p_p == '\n' || *p_p == '\r') |
---|
| 1088 | && p_n != NULL && (*p_n == '\n' || *p_n == '\r')) { |
---|
| 1089 | e->bufflen = p - e->buff; |
---|
| 1090 | e->buff[e->bufflen] = '\0'; |
---|
[7d4fbcd] | 1091 | return(1); |
---|
| 1092 | } |
---|
[47519e1b] | 1093 | if (c != '\0' && !g_unichar_isspace(c)) return(0); |
---|
| 1094 | p_n = p; |
---|
| 1095 | p = p_p; |
---|
| 1096 | c = g_utf8_get_char(p); |
---|
| 1097 | p_p = g_utf8_find_prev_char(e->buff, p); |
---|
[7d4fbcd] | 1098 | } |
---|
| 1099 | return(0); |
---|
| 1100 | } |
---|
| 1101 | |
---|
[fac5463] | 1102 | void owl_editwin_post_process_char(owl_editwin *e, owl_input j) |
---|
[c9334b1] | 1103 | { |
---|
[a556caa] | 1104 | /* XXX force a redisplay? */ |
---|
[fac5463] | 1105 | if ((j.ch==13 || j.ch==10) && owl_editwin_check_dotsend(e)) { |
---|
[7d4fbcd] | 1106 | owl_command_editmulti_done(e); |
---|
| 1107 | return; |
---|
| 1108 | } |
---|
[e20d8179] | 1109 | owl_editwin_redisplay(e, 0); |
---|
[7d4fbcd] | 1110 | } |
---|
| 1111 | |
---|
[fac5463] | 1112 | void _owl_editwin_process_char(owl_editwin *e, gunichar j) |
---|
[c9334b1] | 1113 | { |
---|
[bd1a1ae] | 1114 | if (!(g_unichar_iscntrl(j) && (j != 10) && (j != 13)) || j==9 ) { |
---|
[7d4fbcd] | 1115 | owl_editwin_insert_char(e, j); |
---|
| 1116 | } |
---|
| 1117 | } |
---|
| 1118 | |
---|
[fac5463] | 1119 | |
---|
| 1120 | void owl_editwin_process_char(owl_editwin *e, owl_input j) |
---|
| 1121 | { |
---|
| 1122 | if (j.ch == ERR) return; |
---|
| 1123 | /* Ignore ncurses control characters. */ |
---|
[e20d8179] | 1124 | if (j.ch < 0x100) { |
---|
[fac5463] | 1125 | _owl_editwin_process_char(e, j.uch); |
---|
| 1126 | } |
---|
| 1127 | } |
---|
| 1128 | |
---|
[c9334b1] | 1129 | char *owl_editwin_get_text(owl_editwin *e) |
---|
| 1130 | { |
---|
[7d4fbcd] | 1131 | return(e->buff+e->lock); |
---|
| 1132 | } |
---|
| 1133 | |
---|
[c9334b1] | 1134 | int owl_editwin_get_numlines(owl_editwin *e) |
---|
| 1135 | { |
---|
[7d4fbcd] | 1136 | return(owl_text_num_lines(e->buff)); |
---|
| 1137 | } |
---|
| 1138 | |
---|
[a556caa] | 1139 | int owl_editwin_get_echochar(owl_editwin *e) { |
---|
| 1140 | return e->echochar; |
---|
| 1141 | } |
---|
[e20d8179] | 1142 | |
---|
| 1143 | void owl_editwin_set_goal_column(owl_editwin *e, int column) |
---|
| 1144 | { |
---|
| 1145 | e->goal_column = column; |
---|
| 1146 | } |
---|
| 1147 | |
---|
| 1148 | int owl_editwin_get_goal_column(owl_editwin *e) |
---|
| 1149 | { |
---|
| 1150 | return e->goal_column; |
---|
| 1151 | } |
---|