[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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[cf83b7a] | 46 | /* initialize the editwin e. |
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| 47 | * 'win' is an already initialzed curses window that will be used by editwin |
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| 48 | */ |
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[c9334b1] | 49 | void owl_editwin_init(owl_editwin *e, WINDOW *win, int winlines, int wincols, int style, owl_history *hist) |
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| 50 | { |
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[e20d8179] | 51 | e->buff=owl_malloc(INCR); |
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[7d4fbcd] | 52 | e->buff[0]='\0'; |
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| 53 | e->bufflen=0; |
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[10b866d] | 54 | e->hist=hist; |
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[7d4fbcd] | 55 | e->allocated=INCR; |
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[a556caa] | 56 | e->index = 0; |
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| 57 | e->goal_column = -1; |
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| 58 | e->topindex=0; |
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[7d4fbcd] | 59 | e->winlines=winlines; |
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| 60 | e->wincols=wincols; |
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[9a6cc40] | 61 | e->fillcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxfillcols(&g)); |
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| 62 | e->wrapcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxwrapcols(&g)); |
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[7d4fbcd] | 63 | e->curswin=win; |
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| 64 | e->style=style; |
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| 65 | if ((style!=OWL_EDITWIN_STYLE_MULTILINE) && |
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| 66 | (style!=OWL_EDITWIN_STYLE_ONELINE)) { |
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| 67 | e->style=OWL_EDITWIN_STYLE_MULTILINE; |
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| 68 | } |
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| 69 | e->lock=0; |
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| 70 | e->dotsend=0; |
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[c9334b1] | 71 | e->echochar='\0'; |
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[e74c01c] | 72 | |
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[af1920fd] | 73 | /* We get initialized multiple times, but we need to hold on to |
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| 74 | the callbacks, so we can't NULL them here. */ |
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[e74c01c] | 75 | /* |
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| 76 | e->command = NULL; |
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| 77 | e->callback = NULL; |
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| 78 | e->cbdata = NULL; |
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| 79 | */ |
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[7d4fbcd] | 80 | if (win) werase(win); |
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| 81 | } |
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| 82 | |
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[c9334b1] | 83 | void owl_editwin_set_curswin(owl_editwin *e, WINDOW *w, int winlines, int wincols) |
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| 84 | { |
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[7d4fbcd] | 85 | e->curswin=w; |
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| 86 | e->winlines=winlines; |
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| 87 | e->wincols=wincols; |
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[9a6cc40] | 88 | e->fillcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxfillcols(&g)); |
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| 89 | e->wrapcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxwrapcols(&g)); |
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[7d4fbcd] | 90 | } |
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| 91 | |
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[c9334b1] | 92 | /* echo the character 'ch' for each normal character keystroke, |
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| 93 | * excepting locktext. This is useful for entering passwords etc. If |
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| 94 | * ch=='\0' characters are echo'd normally |
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| 95 | */ |
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| 96 | void owl_editwin_set_echochar(owl_editwin *e, int ch) |
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| 97 | { |
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| 98 | e->echochar=ch; |
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| 99 | } |
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| 100 | |
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| 101 | WINDOW *owl_editwin_get_curswin(owl_editwin *e) |
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| 102 | { |
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[060b3b4] | 103 | return(e->curswin); |
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[7d4fbcd] | 104 | } |
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| 105 | |
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[c9334b1] | 106 | void owl_editwin_set_history(owl_editwin *e, owl_history *h) |
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| 107 | { |
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[060b3b4] | 108 | e->hist=h; |
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[10b866d] | 109 | } |
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| 110 | |
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[c9334b1] | 111 | owl_history *owl_editwin_get_history(owl_editwin *e) |
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| 112 | { |
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[060b3b4] | 113 | return(e->hist); |
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[10b866d] | 114 | } |
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| 115 | |
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[c9334b1] | 116 | void owl_editwin_set_dotsend(owl_editwin *e) |
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| 117 | { |
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[7d4fbcd] | 118 | e->dotsend=1; |
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| 119 | } |
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| 120 | |
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[e74c01c] | 121 | void owl_editwin_set_command(owl_editwin *e, char *command) { |
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| 122 | if(e->command) owl_free(e->command); |
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| 123 | e->command = owl_strdup(command); |
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| 124 | } |
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| 125 | |
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| 126 | char *owl_editwin_get_command(owl_editwin *e) { |
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| 127 | if(e->command) return e->command; |
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| 128 | return ""; |
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| 129 | } |
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| 130 | |
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| 131 | void owl_editwin_set_callback(owl_editwin *e, void (*cb)(owl_editwin*)) { |
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| 132 | e->callback = cb; |
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| 133 | } |
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| 134 | |
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| 135 | void (*owl_editwin_get_callback(owl_editwin *e))(owl_editwin*) { |
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| 136 | return e->callback; |
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| 137 | } |
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| 138 | |
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| 139 | void owl_editwin_set_cbdata(owl_editwin *e, void *data) { |
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| 140 | e->cbdata = data; |
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| 141 | } |
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| 142 | |
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[a556caa] | 143 | void *owl_editwin_get_cbdata(owl_editwin *e) { |
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[e74c01c] | 144 | return e->cbdata; |
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| 145 | } |
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| 146 | |
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| 147 | void owl_editwin_do_callback(owl_editwin *e) { |
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| 148 | void (*cb)(owl_editwin*); |
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| 149 | cb=owl_editwin_get_callback(e); |
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| 150 | if(!cb) { |
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| 151 | owl_function_error("Internal error: No editwin callback!"); |
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| 152 | } else { |
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[af1920fd] | 153 | /* owl_function_error("text: |%s|", owl_editwin_get_text(e)); */ |
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[e74c01c] | 154 | cb(e); |
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| 155 | } |
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| 156 | } |
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| 157 | |
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[c9334b1] | 158 | int owl_editwin_limit_maxcols(int v, int maxv) |
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| 159 | { |
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[d36f2cb] | 160 | if (maxv > 5 && v > maxv) { |
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[060b3b4] | 161 | return(maxv); |
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[d36f2cb] | 162 | } else { |
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[060b3b4] | 163 | return(v); |
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[d36f2cb] | 164 | } |
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| 165 | } |
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| 166 | |
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[c9334b1] | 167 | /* set text to be 'locked in' at the beginning of the buffer, any |
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| 168 | * previous text (including locked text) will be overwritten |
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| 169 | */ |
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| 170 | void owl_editwin_set_locktext(owl_editwin *e, char *text) |
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| 171 | { |
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[a556caa] | 172 | e->index = 0; |
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[7d4fbcd] | 173 | owl_editwin_overwrite_string(e, text); |
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[47519e1b] | 174 | owl_editwin_overwrite_char(e, '\0'); |
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[7d4fbcd] | 175 | e->lock=strlen(text); |
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[a556caa] | 176 | e->index = e->lock; |
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[7d4fbcd] | 177 | owl_editwin_redisplay(e, 0); |
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| 178 | } |
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| 179 | |
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[c9334b1] | 180 | int owl_editwin_get_style(owl_editwin *e) |
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| 181 | { |
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[7d4fbcd] | 182 | return(e->style); |
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| 183 | } |
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| 184 | |
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[c9334b1] | 185 | void owl_editwin_new_style(owl_editwin *e, int newstyle, owl_history *h) |
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| 186 | { |
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[7d4fbcd] | 187 | char *ptr; |
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[10b866d] | 188 | |
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| 189 | owl_editwin_set_history(e, h); |
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[7d4fbcd] | 190 | if (e->style==newstyle) return; |
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| 191 | |
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| 192 | if (newstyle==OWL_EDITWIN_STYLE_MULTILINE) { |
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| 193 | e->style=newstyle; |
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| 194 | } else if (newstyle==OWL_EDITWIN_STYLE_ONELINE) { |
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| 195 | e->style=newstyle; |
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| 196 | |
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| 197 | /* nuke everything after the first line */ |
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| 198 | if (e->bufflen > 0) { |
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| 199 | ptr=strchr(e->buff, '\n')-1; |
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| 200 | if (ptr) { |
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| 201 | e->bufflen=ptr - e->buff; |
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| 202 | e->buff[e->bufflen]='\0'; |
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[a556caa] | 203 | e->index = 0; |
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[7d4fbcd] | 204 | } |
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| 205 | } |
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| 206 | } |
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| 207 | } |
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| 208 | |
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[c9334b1] | 209 | /* completly reinitialize the buffer */ |
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| 210 | void owl_editwin_fullclear(owl_editwin *e) |
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| 211 | { |
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[7d4fbcd] | 212 | owl_free(e->buff); |
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[10b866d] | 213 | owl_editwin_init(e, e->curswin, e->winlines, e->wincols, e->style, e->hist); |
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[7d4fbcd] | 214 | } |
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| 215 | |
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[c9334b1] | 216 | /* clear all text except for locktext and put the cursor at the |
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| 217 | * beginning |
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| 218 | */ |
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| 219 | void owl_editwin_clear(owl_editwin *e) |
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| 220 | { |
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| 221 | |
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[6073462] | 222 | int lock = e->lock; |
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[10b866d] | 223 | int dotsend=e->dotsend; |
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[7d4fbcd] | 224 | char *locktext=NULL; |
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[cc6f009] | 225 | char echochar=e->echochar; |
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[10b866d] | 226 | |
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[6073462] | 227 | if (lock > 0) { |
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[7d4fbcd] | 228 | locktext=owl_malloc(e->lock+20); |
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| 229 | strncpy(locktext, e->buff, e->lock); |
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| 230 | locktext[e->lock]='\0'; |
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| 231 | } |
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| 232 | |
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| 233 | owl_free(e->buff); |
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[10b866d] | 234 | owl_editwin_init(e, e->curswin, e->winlines, e->wincols, e->style, e->hist); |
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[7d4fbcd] | 235 | |
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| 236 | if (lock > 0) { |
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| 237 | owl_editwin_set_locktext(e, locktext); |
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| 238 | } |
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[10b866d] | 239 | if (dotsend) { |
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| 240 | owl_editwin_set_dotsend(e); |
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| 241 | } |
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[cc6f009] | 242 | if (echochar) { |
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| 243 | owl_editwin_set_echochar(e, echochar); |
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| 244 | } |
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[7d4fbcd] | 245 | |
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| 246 | if (locktext) owl_free(locktext); |
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[6073462] | 247 | |
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| 248 | e->index = lock; |
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[7d4fbcd] | 249 | } |
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| 250 | |
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[c9334b1] | 251 | /* malloc more space for the buffer */ |
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| 252 | void _owl_editwin_addspace(owl_editwin *e) |
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| 253 | { |
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[7d4fbcd] | 254 | e->buff=owl_realloc(e->buff, e->allocated+INCR); |
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| 255 | if (!e->buff) { |
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[a556caa] | 256 | /* error *//*XXXXXXXXXXXXXXXX*/ |
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[7d4fbcd] | 257 | return; |
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| 258 | } |
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| 259 | e->allocated+=INCR; |
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| 260 | } |
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| 261 | |
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[c9334b1] | 262 | void owl_editwin_recenter(owl_editwin *e) |
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| 263 | { |
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[a556caa] | 264 | e->topindex = -1; |
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| 265 | } |
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[e20d8179] | 266 | |
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[a0fbdee] | 267 | static void oe_save_excursion(owl_editwin *e, oe_excursion *x) |
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| 268 | { |
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| 269 | x->index = e->index; |
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| 270 | x->goal_column = e->goal_column; |
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| 271 | x->lock = e->lock; |
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| 272 | } |
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| 273 | |
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| 274 | static void oe_restore_excursion(owl_editwin *e, oe_excursion *x) |
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| 275 | { |
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| 276 | e->index = x->index; |
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| 277 | e->goal_column = x->goal_column; |
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| 278 | e->lock = x->lock; |
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| 279 | } |
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| 280 | |
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[e20d8179] | 281 | static inline char *oe_next_point(owl_editwin *e, char *p) |
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| 282 | { |
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| 283 | char *boundary = e->buff + e->bufflen + 1; |
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| 284 | char *q; |
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| 285 | |
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| 286 | q = g_utf8_find_next_char(p, boundary); |
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| 287 | while (q && g_unichar_ismark(g_utf8_get_char(q))) |
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| 288 | q = g_utf8_find_next_char(q, boundary); |
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| 289 | |
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| 290 | if (q == p) |
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| 291 | return NULL; |
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| 292 | return q; |
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| 293 | } |
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| 294 | |
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| 295 | static inline char *oe_prev_point(owl_editwin *e, char *p) |
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| 296 | { |
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| 297 | char *boundary = e->buff + e->lock; |
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| 298 | |
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| 299 | p = g_utf8_find_prev_char(boundary, p); |
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| 300 | while (p && g_unichar_ismark(g_utf8_get_char(p))) |
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| 301 | p = g_utf8_find_prev_char(boundary, p); |
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| 302 | |
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| 303 | return p; |
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| 304 | } |
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| 305 | |
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[19f765d] | 306 | static int oe_find_display_line(owl_editwin *e, int *x, int index) |
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| 307 | { |
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| 308 | int width = 0, cw; |
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| 309 | gunichar c = -1; |
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| 310 | char *p; |
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| 311 | |
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[77d4402] | 312 | while(1) { |
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| 313 | /* note the position of the dot */ |
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[2021bea] | 314 | if (x != NULL && index == e->index && width < e->wincols) |
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[19f765d] | 315 | *x = width; |
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[77d4402] | 316 | |
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[19f765d] | 317 | /* get the current character */ |
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| 318 | c = g_utf8_get_char(e->buff + index); |
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| 319 | |
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| 320 | /* figure out how wide it is */ |
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| 321 | if (c == 9) /* TAB */ |
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| 322 | cw = TABSIZE - width % TABSIZE; |
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| 323 | else |
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| 324 | cw = mk_wcwidth(c); |
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| 325 | if (cw < 0) /* control characters */ |
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| 326 | cw = 0; |
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| 327 | |
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[77d4402] | 328 | if (width + cw > e->wincols) { |
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| 329 | if (x != NULL && *x == width) |
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| 330 | *x = -1; |
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[19f765d] | 331 | break; |
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[77d4402] | 332 | } |
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[19f765d] | 333 | width += cw; |
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| 334 | |
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| 335 | if (c == '\n') { |
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[77d4402] | 336 | if (width < e->wincols) |
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| 337 | ++index; /* skip the newline */ |
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[19f765d] | 338 | break; |
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| 339 | } |
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| 340 | |
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| 341 | /* find the next character */ |
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| 342 | p = oe_next_point(e, e->buff + index); |
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| 343 | if (p == NULL) { /* we ran off the end */ |
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| 344 | if (x != NULL && e->index > index) |
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| 345 | *x = width + 1; |
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| 346 | break; |
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| 347 | } |
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| 348 | index = p - e->buff; |
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[cedc95c] | 349 | |
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[19f765d] | 350 | } |
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| 351 | return index; |
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| 352 | } |
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| 353 | |
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[e20d8179] | 354 | static void oe_reframe(owl_editwin *e) { |
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[cedc95c] | 355 | oe_excursion x; |
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| 356 | int goal = e->winlines / 2; |
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| 357 | int index; |
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| 358 | int count = 0; |
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| 359 | int point; |
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| 360 | int n, i; |
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| 361 | int last; |
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| 362 | |
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| 363 | oe_save_excursion(e, &x); |
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| 364 | /* step back line-by-line through the buffer until we have >= goal lines of |
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| 365 | display text */ |
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| 366 | e->lock = 0; /* we can (must) tread on the locktext */ |
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| 367 | |
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| 368 | point = e->index; |
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| 369 | last = -1; |
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| 370 | while (count < goal) { |
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| 371 | index = e->index; |
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| 372 | owl_editwin_move_to_beginning_of_line(e); |
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| 373 | if (last == e->index) |
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| 374 | break; |
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| 375 | last = e->index; |
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| 376 | for (n = 0, i = e->index; i < index; n++) |
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| 377 | i = oe_find_display_line(e, NULL, i); |
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| 378 | count += n == 0 ? 1 : n; |
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| 379 | if (count < goal) |
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| 380 | owl_editwin_point_move(e, -1); |
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| 381 | } |
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| 382 | /* if we overshot, backtrack */ |
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| 383 | for (n = 0; n < (count - goal); n++) |
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| 384 | e->index = oe_find_display_line(e, NULL, e->index); |
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| 385 | |
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| 386 | e->topindex = e->index; |
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| 387 | |
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| 388 | oe_restore_excursion(e, &x); |
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[7d4fbcd] | 389 | } |
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| 390 | |
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[c9334b1] | 391 | /* regenerate the text on the curses window */ |
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| 392 | /* if update == 1 then do a doupdate(), otherwise do not */ |
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| 393 | void owl_editwin_redisplay(owl_editwin *e, int update) |
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| 394 | { |
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[19f765d] | 395 | int x = -1, y = -1, t; |
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[77d4402] | 396 | int line, index, lineindex, times = 0; |
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[7d4fbcd] | 397 | |
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[bd1a1ae] | 398 | do { |
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[cedc95c] | 399 | werase(e->curswin); |
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| 400 | |
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[bd1a1ae] | 401 | if (e->topindex == -1 || e->index < e->topindex) |
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[e20d8179] | 402 | oe_reframe(e); |
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| 403 | |
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[bd1a1ae] | 404 | line = 0; |
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| 405 | index = e->topindex; |
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| 406 | while(line < e->winlines) { |
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| 407 | lineindex = index; |
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[19f765d] | 408 | t = -1; |
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| 409 | index = oe_find_display_line(e, &t, lineindex); |
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| 410 | if (x == -1 && t != -1) |
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| 411 | x = t, y = line; |
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[bd1a1ae] | 412 | if (index - lineindex) |
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| 413 | mvwaddnstr(e->curswin, line, 0, |
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| 414 | e->buff + lineindex, |
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| 415 | index - lineindex); |
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| 416 | line++; |
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[a556caa] | 417 | } |
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[19f765d] | 418 | if (x == -1) |
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[bd1a1ae] | 419 | e->topindex = -1; /* force a reframe */ |
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[77d4402] | 420 | times++; |
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| 421 | } while(x == -1 && times < 3); |
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[e20d8179] | 422 | |
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[19f765d] | 423 | wmove(e->curswin, y, x); |
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[7d4fbcd] | 424 | wnoutrefresh(e->curswin); |
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[a556caa] | 425 | if (update == 1) |
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[7d4fbcd] | 426 | doupdate(); |
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| 427 | } |
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| 428 | |
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[47519e1b] | 429 | /* Remove n bytes at cursor. */ |
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| 430 | void _owl_editwin_remove_bytes(owl_editwin *e, int n) /*noproto*/ |
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| 431 | { |
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[a556caa] | 432 | int i = e->index + n; |
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[47519e1b] | 433 | for (; i < e->bufflen; i++) { |
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| 434 | e->buff[i-n] = e->buff[i]; |
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| 435 | } |
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[e20d8179] | 436 | |
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[47519e1b] | 437 | e->bufflen -= n; |
---|
| 438 | e->buff[e->bufflen] = '\0'; |
---|
| 439 | } |
---|
[830c36e] | 440 | |
---|
[47519e1b] | 441 | /* Insert n bytes at cursor.*/ |
---|
| 442 | void _owl_editwin_insert_bytes(owl_editwin *e, int n) /*noproto*/ |
---|
| 443 | { |
---|
[a556caa] | 444 | int i; |
---|
[e9bb404] | 445 | |
---|
[47519e1b] | 446 | if ((e->bufflen + n) > (e->allocated - 5)) { |
---|
| 447 | _owl_editwin_addspace(e); |
---|
| 448 | } |
---|
| 449 | |
---|
[a556caa] | 450 | if(e->index != e->bufflen) { |
---|
| 451 | for (i = e->bufflen + n - 1; i > e->index; i--) { |
---|
[e9bb404] | 452 | e->buff[i] = e->buff[i - n]; |
---|
| 453 | } |
---|
[47519e1b] | 454 | } |
---|
[e9bb404] | 455 | |
---|
| 456 | e->bufflen += n; |
---|
| 457 | e->buff[e->bufflen] = '\0'; |
---|
| 458 | |
---|
[47519e1b] | 459 | } |
---|
| 460 | |
---|
[7d4fbcd] | 461 | |
---|
[c9334b1] | 462 | /* linewrap the word just before the cursor. |
---|
| 463 | * returns 0 on success |
---|
| 464 | * returns -1 if we could not wrap. |
---|
| 465 | */ |
---|
| 466 | int _owl_editwin_linewrap_word(owl_editwin *e) |
---|
| 467 | { |
---|
[84027015] | 468 | int i; |
---|
| 469 | char *ptr1, *start; |
---|
| 470 | gunichar c; |
---|
[7d4fbcd] | 471 | |
---|
[84027015] | 472 | start = e->buff + e->lock; |
---|
| 473 | |
---|
[a556caa] | 474 | ptr1 = e->buff + e->index; |
---|
[84027015] | 475 | ptr1 = g_utf8_find_prev_char(start, ptr1); |
---|
| 476 | |
---|
| 477 | while (ptr1) { |
---|
| 478 | c = g_utf8_get_char(ptr1); |
---|
| 479 | if (owl_util_can_break_after(c)) { |
---|
| 480 | if (c != ' ') { |
---|
| 481 | i = ptr1 - e->buff; |
---|
[a556caa] | 482 | e->index = i; |
---|
[b2c1bd4] | 483 | _owl_editwin_insert_bytes(e, 1); |
---|
| 484 | /* _owl_editwin_insert_bytes may move e->buff. */ |
---|
[84027015] | 485 | ptr1 = e->buff + i; |
---|
| 486 | } |
---|
| 487 | *ptr1 = '\n'; |
---|
| 488 | return 0; |
---|
[7d4fbcd] | 489 | } |
---|
[2d4ff14] | 490 | else if (c == '\n') { |
---|
| 491 | return 0; |
---|
| 492 | } |
---|
[84027015] | 493 | ptr1 = g_utf8_find_prev_char(start, ptr1); |
---|
[7d4fbcd] | 494 | } |
---|
[84027015] | 495 | return -1; |
---|
[7d4fbcd] | 496 | } |
---|
| 497 | |
---|
[c9334b1] | 498 | /* insert a character at the current point (shift later |
---|
| 499 | * characters over) |
---|
| 500 | */ |
---|
[47519e1b] | 501 | void owl_editwin_insert_char(owl_editwin *e, gunichar c) |
---|
[c9334b1] | 502 | { |
---|
[a556caa] | 503 | int i, ret, len; |
---|
[47519e1b] | 504 | char tmp[6]; |
---|
| 505 | memset(tmp, '\0', 6); |
---|
[830c36e] | 506 | |
---|
[7d4fbcd] | 507 | /* \r is \n */ |
---|
[47519e1b] | 508 | if (c == '\r') { |
---|
| 509 | c = '\n'; |
---|
[7d4fbcd] | 510 | } |
---|
| 511 | |
---|
[47519e1b] | 512 | if (c == '\n' && e->style == OWL_EDITWIN_STYLE_ONELINE) { |
---|
[7d4fbcd] | 513 | /* perhaps later this will change some state that allows the string |
---|
| 514 | to be read */ |
---|
| 515 | return; |
---|
| 516 | } |
---|
| 517 | |
---|
[47519e1b] | 518 | g_unichar_to_utf8(c, tmp); |
---|
| 519 | len = strlen(tmp); |
---|
[830c36e] | 520 | |
---|
[7d4fbcd] | 521 | /* make sure there is enough memory for the new text */ |
---|
[47519e1b] | 522 | if ((e->bufflen + len) > (e->allocated - 5)) { |
---|
[7d4fbcd] | 523 | _owl_editwin_addspace(e); |
---|
| 524 | } |
---|
| 525 | |
---|
| 526 | /* If we're going to insert at the last column do word wrapping, unless it's a \n */ |
---|
[a556caa] | 527 | #if 0 /* XXX */ |
---|
[47519e1b] | 528 | if ((e->buffx + 1 == e->wrapcol) && (c != '\n')) { |
---|
| 529 | ret = _owl_editwin_linewrap_word(e); |
---|
| 530 | if (ret == -1) { |
---|
[7d4fbcd] | 531 | /* we couldn't wrap, insert a hard newline instead */ |
---|
| 532 | owl_editwin_insert_char(e, '\n'); |
---|
| 533 | } |
---|
| 534 | } |
---|
[a556caa] | 535 | #endif |
---|
[7d4fbcd] | 536 | |
---|
| 537 | /* shift all the other characters right */ |
---|
[e9bb404] | 538 | _owl_editwin_insert_bytes(e, len); |
---|
[7d4fbcd] | 539 | |
---|
[47519e1b] | 540 | /* insert the new character */ |
---|
| 541 | for(i = 0; i < len; i++) { |
---|
[a556caa] | 542 | e->buff[e->index + i] = tmp[i]; |
---|
[47519e1b] | 543 | } |
---|
[7d4fbcd] | 544 | |
---|
| 545 | /* advance the cursor */ |
---|
[a556caa] | 546 | e->index += len; |
---|
[7d4fbcd] | 547 | } |
---|
| 548 | |
---|
[c9334b1] | 549 | /* overwrite the character at the current point with 'c' */ |
---|
[47519e1b] | 550 | void owl_editwin_overwrite_char(owl_editwin *e, gunichar c) |
---|
[c9334b1] | 551 | { |
---|
[a556caa] | 552 | int oldlen, newlen, i; |
---|
| 553 | char tmp[6], *t; |
---|
[47519e1b] | 554 | memset(tmp, '\0', 6); |
---|
[830c36e] | 555 | |
---|
[7d4fbcd] | 556 | /* \r is \n */ |
---|
[47519e1b] | 557 | if (c == '\r') { |
---|
| 558 | c = '\n'; |
---|
[7d4fbcd] | 559 | } |
---|
[e20d8179] | 560 | |
---|
[47519e1b] | 561 | if (c == '\n' && e->style == OWL_EDITWIN_STYLE_ONELINE) { |
---|
[7d4fbcd] | 562 | /* perhaps later this will change some state that allows the string |
---|
| 563 | to be read */ |
---|
| 564 | return; |
---|
| 565 | } |
---|
| 566 | |
---|
[47519e1b] | 567 | g_unichar_to_utf8(c, tmp); |
---|
| 568 | newlen = strlen(tmp); |
---|
[7d4fbcd] | 569 | |
---|
[a556caa] | 570 | t = g_utf8_find_next_char(e->buff + e->index, NULL); |
---|
| 571 | oldlen = (t ? (t - (e->buff + e->index)) : 0); |
---|
[7d4fbcd] | 572 | |
---|
[830c36e] | 573 | /* only if we are at the end of the buffer do we create new space here */ |
---|
[a556caa] | 574 | if (e->index == e->bufflen) { |
---|
[830c36e] | 575 | if ((e->bufflen+newlen) > (e->allocated-5)) { |
---|
| 576 | _owl_editwin_addspace(e); |
---|
| 577 | } |
---|
[7d4fbcd] | 578 | } |
---|
[e20d8179] | 579 | /* if not at the end of the buffer, adjust based in char size difference. */ |
---|
[830c36e] | 580 | else if (oldlen > newlen) { |
---|
[47519e1b] | 581 | _owl_editwin_remove_bytes(e, oldlen-newlen); |
---|
| 582 | } |
---|
| 583 | else /* oldlen < newlen */ { |
---|
| 584 | _owl_editwin_insert_bytes(e, newlen-oldlen); |
---|
[7d4fbcd] | 585 | } |
---|
[47519e1b] | 586 | /* Overwrite the old char*/ |
---|
| 587 | for (i = 0; i < newlen; i++) { |
---|
[a556caa] | 588 | e->buff[e->index + i] = tmp[i]; |
---|
[47519e1b] | 589 | } |
---|
[e20d8179] | 590 | |
---|
[47519e1b] | 591 | /* housekeeping */ |
---|
[a556caa] | 592 | if (e->index == e->bufflen) { |
---|
[830c36e] | 593 | e->bufflen += newlen; |
---|
| 594 | e->buff[e->bufflen] = '\0'; |
---|
| 595 | } |
---|
[e20d8179] | 596 | |
---|
[47519e1b] | 597 | /* advance the cursor */ |
---|
[a556caa] | 598 | e->index += newlen; |
---|
[7d4fbcd] | 599 | } |
---|
| 600 | |
---|
[c9334b1] | 601 | /* delete the character at the current point, following chars |
---|
| 602 | * shift left. |
---|
[e20d8179] | 603 | */ |
---|
[c9334b1] | 604 | void owl_editwin_delete_char(owl_editwin *e) |
---|
| 605 | { |
---|
[47519e1b] | 606 | char *p1, *p2; |
---|
| 607 | gunichar c; |
---|
[7d4fbcd] | 608 | |
---|
[47519e1b] | 609 | if (e->bufflen == 0) return; |
---|
[e20d8179] | 610 | |
---|
[a556caa] | 611 | if (e->index == e->bufflen) return; |
---|
[7d4fbcd] | 612 | |
---|
[a556caa] | 613 | p1 = e->buff + e->index; |
---|
[47519e1b] | 614 | p2 = g_utf8_next_char(p1); |
---|
| 615 | c = g_utf8_get_char(p2); |
---|
| 616 | while (g_unichar_ismark(c)) { |
---|
| 617 | p2 = g_utf8_next_char(p2); |
---|
| 618 | c = g_utf8_get_char(p2); |
---|
[7d4fbcd] | 619 | } |
---|
[47519e1b] | 620 | _owl_editwin_remove_bytes(e, p2-p1); |
---|
[7d4fbcd] | 621 | } |
---|
| 622 | |
---|
[c9334b1] | 623 | /* Swap the character at point with the character at point-1 and |
---|
| 624 | * advance the pointer. If point is at beginning of buffer do |
---|
| 625 | * nothing. If point is after the last character swap point-1 with |
---|
[e20d8179] | 626 | * point-2. (Behaves as observed in tcsh and emacs). |
---|
[c9334b1] | 627 | */ |
---|
| 628 | void owl_editwin_transpose_chars(owl_editwin *e) |
---|
| 629 | { |
---|
[47519e1b] | 630 | char *p1, *p2, *p3, *tmp; |
---|
[f2e36b5] | 631 | |
---|
[47519e1b] | 632 | if (e->bufflen == 0) return; |
---|
[e20d8179] | 633 | |
---|
[a556caa] | 634 | if (e->index == e->bufflen) { |
---|
[f2e36b5] | 635 | /* point is after last character */ |
---|
[a556caa] | 636 | e->index--; |
---|
[e20d8179] | 637 | } |
---|
[f2e36b5] | 638 | |
---|
[a556caa] | 639 | if (e->index - 1 < e->lock) { |
---|
[f2e36b5] | 640 | /* point is at beginning of buffer, do nothing */ |
---|
| 641 | return; |
---|
| 642 | } |
---|
| 643 | |
---|
[47519e1b] | 644 | /* Transpose two utf-8 unicode glyphs. */ |
---|
[a556caa] | 645 | p1 = e->buff + e->index; |
---|
[47519e1b] | 646 | |
---|
[e20d8179] | 647 | p2 = oe_next_point(e, p1); /* XXX make sure we can't transpose past the end |
---|
| 648 | of the buffer */ |
---|
| 649 | if (p2 == NULL) |
---|
| 650 | return; |
---|
[47519e1b] | 651 | |
---|
[e20d8179] | 652 | p3 = oe_prev_point(e, p1); |
---|
| 653 | if (p3 == NULL) |
---|
| 654 | return; |
---|
[47519e1b] | 655 | |
---|
| 656 | tmp = owl_malloc(p2 - p3 + 5); |
---|
| 657 | *tmp = '\0'; |
---|
| 658 | strncat(tmp, p1, p2 - p1); |
---|
| 659 | strncat(tmp, p3, p1 - p3); |
---|
| 660 | strncpy(p3, tmp, p2 - p3); |
---|
| 661 | owl_free(tmp); |
---|
[a556caa] | 662 | e->index = p3 - e->buff; |
---|
[f2e36b5] | 663 | } |
---|
| 664 | |
---|
[c9334b1] | 665 | /* insert 'string' at the current point, later text is shifted |
---|
| 666 | * right |
---|
| 667 | */ |
---|
| 668 | void owl_editwin_insert_string(owl_editwin *e, char *string) |
---|
| 669 | { |
---|
[47519e1b] | 670 | char *p; |
---|
| 671 | gunichar c; |
---|
| 672 | if (!g_utf8_validate(string, -1, NULL)) { |
---|
| 673 | owl_function_debugmsg("owl_editwin_insert_string: received non-utf-8 string."); |
---|
| 674 | return; |
---|
| 675 | } |
---|
| 676 | p = string; |
---|
| 677 | c = g_utf8_get_char(p); |
---|
| 678 | while (c) { |
---|
[fac5463] | 679 | _owl_editwin_process_char(e, c); |
---|
[47519e1b] | 680 | p = g_utf8_next_char(p); |
---|
| 681 | c = g_utf8_get_char(p); |
---|
[7d4fbcd] | 682 | } |
---|
| 683 | } |
---|
| 684 | |
---|
[c9334b1] | 685 | /* write 'string' at the current point, overwriting text that is |
---|
| 686 | * already there |
---|
| 687 | */ |
---|
| 688 | |
---|
| 689 | void owl_editwin_overwrite_string(owl_editwin *e, char *string) |
---|
| 690 | { |
---|
[47519e1b] | 691 | char *p; |
---|
| 692 | gunichar c; |
---|
[7d4fbcd] | 693 | |
---|
[47519e1b] | 694 | if (!g_utf8_validate(string, -1, NULL)) { |
---|
| 695 | owl_function_debugmsg("owl_editwin_overwrite_string: received non-utf-8 string."); |
---|
| 696 | return; |
---|
| 697 | } |
---|
| 698 | p = string; |
---|
| 699 | c = g_utf8_get_char(p); |
---|
| 700 | while (c) { |
---|
| 701 | owl_editwin_overwrite_char(e, c); |
---|
| 702 | p = g_utf8_next_char(p); |
---|
| 703 | c = g_utf8_get_char(p); |
---|
[7d4fbcd] | 704 | } |
---|
| 705 | } |
---|
| 706 | |
---|
[a556caa] | 707 | /* We assume index is not set to point to a mid-char */ |
---|
| 708 | gunichar _owl_editwin_get_char_at_point(owl_editwin *e) |
---|
[c9334b1] | 709 | { |
---|
[a556caa] | 710 | return g_utf8_get_char(e->buff + e->index); |
---|
| 711 | } |
---|
[7d4fbcd] | 712 | |
---|
[e20d8179] | 713 | int owl_editwin_point_move(owl_editwin *e, int delta) |
---|
[84027015] | 714 | { |
---|
[e20d8179] | 715 | char *p; |
---|
[19f765d] | 716 | int change, d = 0; |
---|
[a556caa] | 717 | |
---|
| 718 | change = MAX(delta, - delta); |
---|
| 719 | p = e->buff + e->index; |
---|
| 720 | |
---|
| 721 | while (d < change && p != NULL) { |
---|
[e20d8179] | 722 | if (delta > 0) |
---|
| 723 | p = oe_next_point(e, p); |
---|
| 724 | else |
---|
| 725 | p = oe_prev_point(e, p); |
---|
| 726 | if (p != NULL) { |
---|
| 727 | e->index = p - e->buff; |
---|
| 728 | d++; |
---|
[a556caa] | 729 | } |
---|
| 730 | } |
---|
| 731 | |
---|
| 732 | if (delta) |
---|
| 733 | e->goal_column = -1; |
---|
| 734 | |
---|
| 735 | return delta > 0 ? d : -d; |
---|
[84027015] | 736 | } |
---|
| 737 | |
---|
[a556caa] | 738 | int owl_editwin_at_beginning_of_buffer(owl_editwin *e) { |
---|
| 739 | if (e->index == e->lock) |
---|
| 740 | return 1; |
---|
[84027015] | 741 | |
---|
[a556caa] | 742 | return 0; |
---|
| 743 | } |
---|
| 744 | |
---|
| 745 | int owl_at_end_of_buffer(owl_editwin *e) { |
---|
| 746 | if (e->index == e->bufflen) |
---|
| 747 | return 1; |
---|
| 748 | |
---|
| 749 | return 0; |
---|
| 750 | } |
---|
| 751 | |
---|
| 752 | int owl_editwin_at_beginning_of_line(owl_editwin *e) /*noproto*/ |
---|
[c9334b1] | 753 | { |
---|
[a0fbdee] | 754 | oe_excursion x; |
---|
[a556caa] | 755 | int ret; |
---|
[47519e1b] | 756 | |
---|
[a556caa] | 757 | if (owl_editwin_at_beginning_of_buffer(e)) |
---|
| 758 | return 1; |
---|
[47519e1b] | 759 | |
---|
[a0fbdee] | 760 | oe_save_excursion(e, &x); |
---|
[a556caa] | 761 | owl_editwin_point_move(e, -1); |
---|
| 762 | ret = (_owl_editwin_get_char_at_point(e) == '\n'); |
---|
[a0fbdee] | 763 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 764 | |
---|
| 765 | return ret; |
---|
| 766 | } |
---|
| 767 | |
---|
[e20d8179] | 768 | static int owl_editwin_is_char_in(owl_editwin *e, char *set) |
---|
[a556caa] | 769 | { |
---|
| 770 | char *p; |
---|
| 771 | /* It would be awfully nice if we could do UTF-8 comparisons */ |
---|
| 772 | for (p = set; *p != 0; p++) |
---|
| 773 | if (_owl_editwin_get_char_at_point(e) == *p) |
---|
| 774 | return 1; |
---|
| 775 | return 0; |
---|
| 776 | } |
---|
| 777 | |
---|
[e20d8179] | 778 | int owl_editwin_move_if_in(owl_editwin *e, int delta, char *set) |
---|
[a556caa] | 779 | { |
---|
| 780 | int change, distance = 0; |
---|
[e20d8179] | 781 | while (owl_editwin_is_char_in(e, set)) { |
---|
[a556caa] | 782 | change = owl_editwin_point_move(e, delta); |
---|
| 783 | distance += change; |
---|
| 784 | if (change == 0) |
---|
| 785 | break; |
---|
[47519e1b] | 786 | } |
---|
[a556caa] | 787 | return distance; |
---|
| 788 | } |
---|
| 789 | |
---|
[e20d8179] | 790 | int owl_editwin_move_if_not_in(owl_editwin *e, int delta, char *set) |
---|
[a556caa] | 791 | { |
---|
| 792 | int change, distance = 0; |
---|
[e20d8179] | 793 | while (!owl_editwin_is_char_in(e, set)) { |
---|
[a556caa] | 794 | change = owl_editwin_point_move(e, delta); |
---|
| 795 | distance += change; |
---|
| 796 | if (change == 0) |
---|
| 797 | break; |
---|
[7d4fbcd] | 798 | } |
---|
[a556caa] | 799 | return distance; |
---|
[7d4fbcd] | 800 | } |
---|
| 801 | |
---|
[e20d8179] | 802 | int owl_editwin_move_to_beginning_of_line(owl_editwin *e) |
---|
[47519e1b] | 803 | { |
---|
[a556caa] | 804 | int distance = 0; |
---|
[47519e1b] | 805 | |
---|
[a556caa] | 806 | if (!owl_editwin_at_beginning_of_line(e)) { |
---|
| 807 | /* move off the \n if were at the end of a line */ |
---|
| 808 | distance += owl_editwin_point_move(e, -1); |
---|
| 809 | distance += owl_editwin_move_if_not_in(e, -1, "\n"); |
---|
| 810 | if (distance && !owl_editwin_at_beginning_of_buffer(e)) |
---|
| 811 | distance += owl_editwin_point_move(e, 1); |
---|
[47519e1b] | 812 | } |
---|
[77d4402] | 813 | e->goal_column = 0; /* subtleties */ |
---|
[84027015] | 814 | |
---|
[a556caa] | 815 | return distance; |
---|
| 816 | } |
---|
[e20d8179] | 817 | |
---|
| 818 | int owl_editwin_move_to_end_of_line(owl_editwin *e) |
---|
[a556caa] | 819 | { |
---|
| 820 | return owl_editwin_move_if_not_in(e, 1, "\n"); |
---|
[47519e1b] | 821 | } |
---|
| 822 | |
---|
[e20d8179] | 823 | int owl_editwin_line_move(owl_editwin *e, int delta) |
---|
[c9334b1] | 824 | { |
---|
[d7043b4] | 825 | int goal_column, change, ll, distance; |
---|
| 826 | int count = 0; |
---|
[a556caa] | 827 | |
---|
| 828 | change = MAX(delta, -delta); |
---|
| 829 | |
---|
[d7043b4] | 830 | goal_column = e->goal_column; |
---|
| 831 | distance = owl_editwin_move_to_beginning_of_line(e); |
---|
| 832 | goal_column = goal_column == -1 ? -distance : goal_column; |
---|
[a556caa] | 833 | |
---|
| 834 | while(count < change) { |
---|
| 835 | if (delta > 0) { |
---|
| 836 | distance += owl_editwin_move_if_not_in(e, 1, "\n"); |
---|
| 837 | distance += owl_editwin_point_move(e, 1); |
---|
| 838 | } else { |
---|
| 839 | /* I really want to assert delta < 0 here */ |
---|
| 840 | distance += owl_editwin_point_move(e, -1); /* to the newline on |
---|
| 841 | the previous line */ |
---|
| 842 | distance += owl_editwin_move_to_beginning_of_line(e); |
---|
| 843 | } |
---|
| 844 | count++; |
---|
[7d4fbcd] | 845 | } |
---|
[a556caa] | 846 | |
---|
| 847 | distance += (ll = owl_editwin_move_to_end_of_line(e)); |
---|
| 848 | if (ll > goal_column) |
---|
| 849 | distance += owl_editwin_point_move(e, goal_column - ll); |
---|
| 850 | |
---|
| 851 | e->goal_column = goal_column; |
---|
| 852 | |
---|
| 853 | return distance; |
---|
[7d4fbcd] | 854 | } |
---|
| 855 | |
---|
[c9334b1] | 856 | void owl_editwin_backspace(owl_editwin *e) |
---|
| 857 | { |
---|
[7d4fbcd] | 858 | /* delete the char before the current one |
---|
| 859 | * and shift later chars left |
---|
| 860 | */ |
---|
[a556caa] | 861 | if(owl_editwin_point_move(e, -1)) |
---|
[7d4fbcd] | 862 | owl_editwin_delete_char(e); |
---|
| 863 | } |
---|
| 864 | |
---|
[c9334b1] | 865 | void owl_editwin_key_up(owl_editwin *e) |
---|
| 866 | { |
---|
[a556caa] | 867 | owl_editwin_line_move(e, -1); |
---|
[7d4fbcd] | 868 | } |
---|
| 869 | |
---|
[c9334b1] | 870 | void owl_editwin_key_down(owl_editwin *e) |
---|
| 871 | { |
---|
[a556caa] | 872 | owl_editwin_line_move(e, 1); |
---|
[7d4fbcd] | 873 | } |
---|
| 874 | |
---|
[c9334b1] | 875 | void owl_editwin_key_left(owl_editwin *e) |
---|
| 876 | { |
---|
[a556caa] | 877 | owl_editwin_point_move(e, -1); |
---|
[7d4fbcd] | 878 | } |
---|
| 879 | |
---|
[c9334b1] | 880 | void owl_editwin_key_right(owl_editwin *e) |
---|
| 881 | { |
---|
[a556caa] | 882 | owl_editwin_point_move(e, 1); |
---|
[7d4fbcd] | 883 | } |
---|
| 884 | |
---|
[c9334b1] | 885 | void owl_editwin_move_to_nextword(owl_editwin *e) |
---|
| 886 | { |
---|
[7d4fbcd] | 887 | /* if we're starting on a space, find the first non-space */ |
---|
[a556caa] | 888 | owl_editwin_move_if_in(e, 1, WHITESPACE); |
---|
[7d4fbcd] | 889 | |
---|
[a556caa] | 890 | /* now find the end of this word */ |
---|
| 891 | owl_editwin_move_if_not_in(e, 1, WHITESPACE); |
---|
[7d4fbcd] | 892 | } |
---|
| 893 | |
---|
[c9334b1] | 894 | /* go backwards to the last non-space character |
---|
| 895 | */ |
---|
| 896 | void owl_editwin_move_to_previousword(owl_editwin *e) |
---|
| 897 | { |
---|
[a0fbdee] | 898 | oe_excursion x; |
---|
[a556caa] | 899 | int beginning; |
---|
| 900 | /* if in middle of word, beginning of word */ |
---|
| 901 | |
---|
| 902 | /* if at beginning of a word, find beginning of previous word */ |
---|
| 903 | |
---|
[e20d8179] | 904 | if (owl_editwin_is_char_in(e, WHITESPACE)) { |
---|
[a556caa] | 905 | /* if in whitespace past end of word, find a word , the find the beginning*/ |
---|
| 906 | owl_editwin_move_if_in(e, -1, WHITESPACE); /* leaves us on the last |
---|
| 907 | character of the word */ |
---|
[a0fbdee] | 908 | oe_save_excursion(e, &x); |
---|
[a556caa] | 909 | /* are we at the beginning of a word? */ |
---|
| 910 | owl_editwin_point_move(e, -1); |
---|
[e20d8179] | 911 | beginning = owl_editwin_is_char_in(e, WHITESPACE); |
---|
[a0fbdee] | 912 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 913 | if (beginning) |
---|
| 914 | return; |
---|
| 915 | } else { |
---|
| 916 | /* in the middle of the word; */ |
---|
[a0fbdee] | 917 | oe_save_excursion(e, &x); |
---|
[a556caa] | 918 | owl_editwin_point_move(e, -1); |
---|
[e20d8179] | 919 | if (owl_editwin_is_char_in(e, WHITESPACE)) { /* we were at the beginning */ |
---|
[a556caa] | 920 | owl_editwin_move_to_previousword(e); /* previous case */ |
---|
| 921 | return; |
---|
| 922 | } else { |
---|
[a0fbdee] | 923 | oe_restore_excursion(e, &x); |
---|
[7d4fbcd] | 924 | } |
---|
| 925 | } |
---|
[a556caa] | 926 | owl_editwin_move_if_not_in(e, -1, WHITESPACE); |
---|
| 927 | /* will go past */ |
---|
| 928 | if (e->index > e->lock) |
---|
| 929 | owl_editwin_point_move(e, 1); |
---|
[7d4fbcd] | 930 | } |
---|
| 931 | |
---|
[c9334b1] | 932 | void owl_editwin_delete_nextword(owl_editwin *e) |
---|
| 933 | { |
---|
[a0fbdee] | 934 | oe_excursion x; |
---|
[a556caa] | 935 | int end; |
---|
| 936 | |
---|
[a0fbdee] | 937 | oe_save_excursion(e, &x); |
---|
[a556caa] | 938 | owl_editwin_move_to_nextword(e); |
---|
| 939 | end = e->index; |
---|
[a0fbdee] | 940 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 941 | _owl_editwin_remove_bytes(e, end - e->index); |
---|
[7d4fbcd] | 942 | } |
---|
| 943 | |
---|
[c9334b1] | 944 | void owl_editwin_delete_previousword(owl_editwin *e) |
---|
| 945 | { |
---|
[b68f9cd] | 946 | /* go backwards to the last non-space character, then delete chars */ |
---|
[84027015] | 947 | int startpos, endpos; |
---|
[b68f9cd] | 948 | |
---|
[a556caa] | 949 | startpos = e->index; |
---|
[b68f9cd] | 950 | owl_editwin_move_to_previousword(e); |
---|
[a556caa] | 951 | endpos = e->index; |
---|
[84027015] | 952 | _owl_editwin_remove_bytes(e, startpos-endpos); |
---|
[b68f9cd] | 953 | } |
---|
| 954 | |
---|
[a556caa] | 955 | void owl_editwin_move_to_line_end(owl_editwin *e) |
---|
[c9334b1] | 956 | { |
---|
[a556caa] | 957 | owl_editwin_move_to_end_of_line(e); |
---|
[7d4fbcd] | 958 | } |
---|
| 959 | |
---|
[a556caa] | 960 | void owl_editwin_delete_to_endofline(owl_editwin *e) |
---|
[c9334b1] | 961 | { |
---|
[a0fbdee] | 962 | oe_excursion x; |
---|
[a556caa] | 963 | int end; |
---|
| 964 | |
---|
[a0fbdee] | 965 | oe_save_excursion(e, &x); |
---|
[a556caa] | 966 | owl_editwin_move_to_line_end(e); |
---|
| 967 | end = e->index; |
---|
[a0fbdee] | 968 | oe_restore_excursion(e, &x); |
---|
[77d4402] | 969 | if (end - e->index) |
---|
| 970 | _owl_editwin_remove_bytes(e, end - e->index); |
---|
| 971 | else if (end < e->bufflen) |
---|
| 972 | _owl_editwin_remove_bytes(e, 1); |
---|
[7d4fbcd] | 973 | } |
---|
| 974 | |
---|
[c9334b1] | 975 | void owl_editwin_move_to_line_start(owl_editwin *e) |
---|
| 976 | { |
---|
[a556caa] | 977 | owl_editwin_move_to_beginning_of_line(e); |
---|
[7d4fbcd] | 978 | } |
---|
| 979 | |
---|
[c9334b1] | 980 | void owl_editwin_move_to_end(owl_editwin *e) |
---|
| 981 | { |
---|
[a556caa] | 982 | e->index = e->bufflen; |
---|
[7d4fbcd] | 983 | } |
---|
| 984 | |
---|
[c9334b1] | 985 | void owl_editwin_move_to_top(owl_editwin *e) |
---|
| 986 | { |
---|
[a556caa] | 987 | e->index = e->lock; |
---|
[7d4fbcd] | 988 | } |
---|
| 989 | |
---|
[c9334b1] | 990 | void owl_editwin_fill_paragraph(owl_editwin *e) |
---|
| 991 | { |
---|
[a556caa] | 992 | #if 0 /* XXX */ |
---|
[a0fbdee] | 993 | oe_excursion x; |
---|
[7d4fbcd] | 994 | int i, save; |
---|
| 995 | |
---|
| 996 | /* save our starting point */ |
---|
[a0fbdee] | 997 | oe_save_excursion(e, &x); |
---|
[a556caa] | 998 | |
---|
| 999 | save = e->index; |
---|
[7d4fbcd] | 1000 | |
---|
| 1001 | /* scan back to the beginning of this paragraph */ |
---|
| 1002 | for (i=save; i>=e->lock; i--) { |
---|
| 1003 | if ( (i<=e->lock) || |
---|
| 1004 | ((e->buff[i]=='\n') && (e->buff[i-1]=='\n'))) { |
---|
[a556caa] | 1005 | e->index = i + 1; |
---|
[7d4fbcd] | 1006 | break; |
---|
| 1007 | } |
---|
| 1008 | } |
---|
| 1009 | |
---|
| 1010 | /* main loop */ |
---|
| 1011 | while (1) { |
---|
[47519e1b] | 1012 | i = _owl_editwin_get_index_from_xy(e); |
---|
[7d4fbcd] | 1013 | |
---|
| 1014 | /* bail if we hit the end of the buffer */ |
---|
[47519e1b] | 1015 | if (i >= e->bufflen || e->buff[i] == '\0') break; |
---|
[7d4fbcd] | 1016 | |
---|
| 1017 | /* bail if we hit the end of the paragraph */ |
---|
[47519e1b] | 1018 | if (e->buff[i] == '\n' && e->buff[i+1] == '\n') break; |
---|
[7d4fbcd] | 1019 | |
---|
[50e671c] | 1020 | /* bail if we hit a trailing dot on the buffer */ |
---|
| 1021 | if (e->buff[i] == '\n' && e->buff[i+1] == '.' |
---|
| 1022 | && ((i+2) >= e->bufflen || e->buff[i+2] == '\0')) |
---|
| 1023 | break; |
---|
| 1024 | |
---|
[7d4fbcd] | 1025 | /* if we've travelled too far, linewrap */ |
---|
| 1026 | if ((e->buffx) >= e->fillcol) { |
---|
[b2c1bd4] | 1027 | int len = e->bufflen; |
---|
[7d4fbcd] | 1028 | _owl_editwin_linewrap_word(e); |
---|
[b2c1bd4] | 1029 | /* we may have added a character. */ |
---|
| 1030 | if (i < save) save += e->bufflen - len; |
---|
[a556caa] | 1031 | e->index = i; |
---|
[7d4fbcd] | 1032 | } |
---|
| 1033 | |
---|
| 1034 | /* did we hit the end of a line too soon? */ |
---|
[84027015] | 1035 | /* asedeno: Here we replace a newline with a space. We may want to |
---|
| 1036 | consider removing the space if the characters to either side |
---|
| 1037 | are CJK ideograms.*/ |
---|
[47519e1b] | 1038 | i = _owl_editwin_get_index_from_xy(e); |
---|
| 1039 | if (e->buff[i] == '\n' && e->buffx < e->fillcol - 1) { |
---|
[7d4fbcd] | 1040 | /* ********* we need to make sure we don't pull in a word that's too long ***********/ |
---|
| 1041 | e->buff[i]=' '; |
---|
| 1042 | } |
---|
[b2c1bd4] | 1043 | |
---|
[7d4fbcd] | 1044 | /* fix spacing */ |
---|
[47519e1b] | 1045 | i = _owl_editwin_get_index_from_xy(e); |
---|
| 1046 | if (e->buff[i] == ' ' && e->buff[i+1] == ' ') { |
---|
| 1047 | if (e->buff[i-1] == '.' || e->buff[i-1] == '!' || e->buff[i-1] == '?') { |
---|
[7d4fbcd] | 1048 | owl_editwin_key_right(e); |
---|
| 1049 | } else { |
---|
| 1050 | owl_editwin_delete_char(e); |
---|
[84027015] | 1051 | /* if we did this ahead of the save point, adjust it. Changing |
---|
| 1052 | by one is fine here because we're only removing an ASCII |
---|
| 1053 | space. */ |
---|
[47519e1b] | 1054 | if (i < save) save--; |
---|
[7d4fbcd] | 1055 | } |
---|
| 1056 | } else { |
---|
| 1057 | owl_editwin_key_right(e); |
---|
| 1058 | } |
---|
| 1059 | } |
---|
| 1060 | |
---|
| 1061 | /* put cursor back at starting point */ |
---|
[a0fbdee] | 1062 | oe_restore_excursion(e, &x); |
---|
[a556caa] | 1063 | #endif |
---|
[7d4fbcd] | 1064 | } |
---|
| 1065 | |
---|
[cf83b7a] | 1066 | /* returns true if only whitespace remains */ |
---|
[c9334b1] | 1067 | int owl_editwin_is_at_end(owl_editwin *e) |
---|
| 1068 | { |
---|
[a556caa] | 1069 | return (only_whitespace(e->buff + e->index)); |
---|
[217a43e] | 1070 | } |
---|
| 1071 | |
---|
[c9334b1] | 1072 | int owl_editwin_check_dotsend(owl_editwin *e) |
---|
| 1073 | { |
---|
[47519e1b] | 1074 | char *p, *p_n, *p_p; |
---|
| 1075 | gunichar c; |
---|
[7d4fbcd] | 1076 | |
---|
| 1077 | if (!e->dotsend) return(0); |
---|
[47519e1b] | 1078 | |
---|
| 1079 | p = g_utf8_find_prev_char(e->buff, e->buff + e->bufflen); |
---|
| 1080 | p_n = g_utf8_find_next_char(p, NULL); |
---|
| 1081 | p_p = g_utf8_find_prev_char(e->buff, p); |
---|
| 1082 | c = g_utf8_get_char(p); |
---|
| 1083 | while (p != NULL) { |
---|
| 1084 | if (*p == '.' |
---|
| 1085 | && p_p != NULL && (*p_p == '\n' || *p_p == '\r') |
---|
| 1086 | && p_n != NULL && (*p_n == '\n' || *p_n == '\r')) { |
---|
| 1087 | e->bufflen = p - e->buff; |
---|
| 1088 | e->buff[e->bufflen] = '\0'; |
---|
[7d4fbcd] | 1089 | return(1); |
---|
| 1090 | } |
---|
[47519e1b] | 1091 | if (c != '\0' && !g_unichar_isspace(c)) return(0); |
---|
| 1092 | p_n = p; |
---|
| 1093 | p = p_p; |
---|
| 1094 | c = g_utf8_get_char(p); |
---|
| 1095 | p_p = g_utf8_find_prev_char(e->buff, p); |
---|
[7d4fbcd] | 1096 | } |
---|
| 1097 | return(0); |
---|
| 1098 | } |
---|
| 1099 | |
---|
[fac5463] | 1100 | void owl_editwin_post_process_char(owl_editwin *e, owl_input j) |
---|
[c9334b1] | 1101 | { |
---|
[a556caa] | 1102 | /* XXX force a redisplay? */ |
---|
[fac5463] | 1103 | if ((j.ch==13 || j.ch==10) && owl_editwin_check_dotsend(e)) { |
---|
[7d4fbcd] | 1104 | owl_command_editmulti_done(e); |
---|
| 1105 | return; |
---|
| 1106 | } |
---|
[e20d8179] | 1107 | owl_editwin_redisplay(e, 0); |
---|
[7d4fbcd] | 1108 | } |
---|
| 1109 | |
---|
[fac5463] | 1110 | void _owl_editwin_process_char(owl_editwin *e, gunichar j) |
---|
[c9334b1] | 1111 | { |
---|
[bd1a1ae] | 1112 | if (!(g_unichar_iscntrl(j) && (j != 10) && (j != 13)) || j==9 ) { |
---|
[7d4fbcd] | 1113 | owl_editwin_insert_char(e, j); |
---|
| 1114 | } |
---|
| 1115 | } |
---|
| 1116 | |
---|
[fac5463] | 1117 | |
---|
| 1118 | void owl_editwin_process_char(owl_editwin *e, owl_input j) |
---|
| 1119 | { |
---|
| 1120 | if (j.ch == ERR) return; |
---|
| 1121 | /* Ignore ncurses control characters. */ |
---|
[e20d8179] | 1122 | if (j.ch < 0x100) { |
---|
[fac5463] | 1123 | _owl_editwin_process_char(e, j.uch); |
---|
| 1124 | } |
---|
| 1125 | } |
---|
| 1126 | |
---|
[c9334b1] | 1127 | char *owl_editwin_get_text(owl_editwin *e) |
---|
| 1128 | { |
---|
[7d4fbcd] | 1129 | return(e->buff+e->lock); |
---|
| 1130 | } |
---|
| 1131 | |
---|
[c9334b1] | 1132 | int owl_editwin_get_numlines(owl_editwin *e) |
---|
| 1133 | { |
---|
[7d4fbcd] | 1134 | return(owl_text_num_lines(e->buff)); |
---|
| 1135 | } |
---|
| 1136 | |
---|
[a556caa] | 1137 | int owl_editwin_get_echochar(owl_editwin *e) { |
---|
| 1138 | return e->echochar; |
---|
| 1139 | } |
---|
[e20d8179] | 1140 | |
---|
| 1141 | void owl_editwin_set_goal_column(owl_editwin *e, int column) |
---|
| 1142 | { |
---|
| 1143 | e->goal_column = column; |
---|
| 1144 | } |
---|
| 1145 | |
---|
| 1146 | int owl_editwin_get_goal_column(owl_editwin *e) |
---|
| 1147 | { |
---|
| 1148 | return e->goal_column; |
---|
| 1149 | } |
---|