[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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[7d4fbcd] | 9 | #define INCR 5000 |
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| 10 | |
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[cf83b7a] | 11 | /* initialize the editwin e. |
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| 12 | * 'win' is an already initialzed curses window that will be used by editwin |
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| 13 | */ |
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[c9334b1] | 14 | void owl_editwin_init(owl_editwin *e, WINDOW *win, int winlines, int wincols, int style, owl_history *hist) |
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| 15 | { |
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[10b866d] | 16 | e->buff=owl_malloc(INCR); |
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[7d4fbcd] | 17 | e->buff[0]='\0'; |
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| 18 | e->bufflen=0; |
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[10b866d] | 19 | e->hist=hist; |
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[7d4fbcd] | 20 | e->allocated=INCR; |
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| 21 | e->buffx=0; |
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| 22 | e->buffy=0; |
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| 23 | e->topline=0; |
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| 24 | e->winlines=winlines; |
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| 25 | e->wincols=wincols; |
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[9a6cc40] | 26 | e->fillcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxfillcols(&g)); |
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| 27 | e->wrapcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxwrapcols(&g)); |
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[7d4fbcd] | 28 | e->curswin=win; |
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| 29 | e->style=style; |
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| 30 | if ((style!=OWL_EDITWIN_STYLE_MULTILINE) && |
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| 31 | (style!=OWL_EDITWIN_STYLE_ONELINE)) { |
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| 32 | e->style=OWL_EDITWIN_STYLE_MULTILINE; |
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| 33 | } |
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| 34 | e->lock=0; |
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| 35 | e->dotsend=0; |
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[c9334b1] | 36 | e->echochar='\0'; |
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[e74c01c] | 37 | |
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[af1920fd] | 38 | /* We get initialized multiple times, but we need to hold on to |
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| 39 | the callbacks, so we can't NULL them here. */ |
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[e74c01c] | 40 | /* |
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| 41 | e->command = NULL; |
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| 42 | e->callback = NULL; |
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| 43 | e->cbdata = NULL; |
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| 44 | */ |
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[7d4fbcd] | 45 | if (win) werase(win); |
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| 46 | } |
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| 47 | |
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[c9334b1] | 48 | void owl_editwin_set_curswin(owl_editwin *e, WINDOW *w, int winlines, int wincols) |
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| 49 | { |
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[7d4fbcd] | 50 | e->curswin=w; |
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| 51 | e->winlines=winlines; |
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| 52 | e->wincols=wincols; |
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[9a6cc40] | 53 | e->fillcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxfillcols(&g)); |
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| 54 | e->wrapcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxwrapcols(&g)); |
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[7d4fbcd] | 55 | } |
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| 56 | |
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[c9334b1] | 57 | /* echo the character 'ch' for each normal character keystroke, |
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| 58 | * excepting locktext. This is useful for entering passwords etc. If |
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| 59 | * ch=='\0' characters are echo'd normally |
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| 60 | */ |
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| 61 | void owl_editwin_set_echochar(owl_editwin *e, int ch) |
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| 62 | { |
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| 63 | e->echochar=ch; |
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| 64 | } |
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| 65 | |
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| 66 | WINDOW *owl_editwin_get_curswin(owl_editwin *e) |
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| 67 | { |
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[060b3b4] | 68 | return(e->curswin); |
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[7d4fbcd] | 69 | } |
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| 70 | |
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[c9334b1] | 71 | void owl_editwin_set_history(owl_editwin *e, owl_history *h) |
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| 72 | { |
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[060b3b4] | 73 | e->hist=h; |
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[10b866d] | 74 | } |
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| 75 | |
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[c9334b1] | 76 | owl_history *owl_editwin_get_history(owl_editwin *e) |
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| 77 | { |
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[060b3b4] | 78 | return(e->hist); |
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[10b866d] | 79 | } |
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| 80 | |
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[c9334b1] | 81 | void owl_editwin_set_dotsend(owl_editwin *e) |
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| 82 | { |
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[7d4fbcd] | 83 | e->dotsend=1; |
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| 84 | } |
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| 85 | |
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[e74c01c] | 86 | void owl_editwin_set_command(owl_editwin *e, char *command) { |
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| 87 | if(e->command) owl_free(e->command); |
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| 88 | e->command = owl_strdup(command); |
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| 89 | } |
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| 90 | |
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| 91 | char *owl_editwin_get_command(owl_editwin *e) { |
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| 92 | if(e->command) return e->command; |
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| 93 | return ""; |
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| 94 | } |
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| 95 | |
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| 96 | void owl_editwin_set_callback(owl_editwin *e, void (*cb)(owl_editwin*)) { |
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| 97 | e->callback = cb; |
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| 98 | } |
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| 99 | |
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| 100 | void (*owl_editwin_get_callback(owl_editwin *e))(owl_editwin*) { |
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| 101 | return e->callback; |
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| 102 | } |
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| 103 | |
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| 104 | void owl_editwin_set_cbdata(owl_editwin *e, void *data) { |
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| 105 | e->cbdata = data; |
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| 106 | } |
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| 107 | |
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| 108 | void* owl_editwin_get_cbdata(owl_editwin *e) { |
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| 109 | return e->cbdata; |
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| 110 | } |
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| 111 | |
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| 112 | void owl_editwin_do_callback(owl_editwin *e) { |
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| 113 | void (*cb)(owl_editwin*); |
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| 114 | cb=owl_editwin_get_callback(e); |
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| 115 | if(!cb) { |
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| 116 | owl_function_error("Internal error: No editwin callback!"); |
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| 117 | } else { |
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[af1920fd] | 118 | /* owl_function_error("text: |%s|", owl_editwin_get_text(e)); */ |
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[e74c01c] | 119 | cb(e); |
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| 120 | } |
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| 121 | } |
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| 122 | |
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[c9334b1] | 123 | int owl_editwin_limit_maxcols(int v, int maxv) |
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| 124 | { |
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[d36f2cb] | 125 | if (maxv > 5 && v > maxv) { |
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[060b3b4] | 126 | return(maxv); |
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[d36f2cb] | 127 | } else { |
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[060b3b4] | 128 | return(v); |
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[d36f2cb] | 129 | } |
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| 130 | } |
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| 131 | |
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[c9334b1] | 132 | /* set text to be 'locked in' at the beginning of the buffer, any |
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| 133 | * previous text (including locked text) will be overwritten |
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| 134 | */ |
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| 135 | void owl_editwin_set_locktext(owl_editwin *e, char *text) |
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| 136 | { |
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[7d4fbcd] | 137 | |
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| 138 | int x, y; |
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| 139 | |
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| 140 | x=e->buffx; |
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| 141 | y=e->buffy; |
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| 142 | e->buffx=0; |
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| 143 | e->buffy=0; |
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| 144 | owl_editwin_overwrite_string(e, text); |
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| 145 | e->lock=strlen(text); |
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| 146 | /* if (text[e->lock-1]=='\n') e->lock--; */ |
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| 147 | e->buffx=x; |
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| 148 | e->buffy=y; |
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| 149 | owl_editwin_adjust_for_locktext(e); |
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| 150 | owl_editwin_redisplay(e, 0); |
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| 151 | } |
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| 152 | |
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[c9334b1] | 153 | int owl_editwin_get_style(owl_editwin *e) |
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| 154 | { |
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[7d4fbcd] | 155 | return(e->style); |
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| 156 | } |
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| 157 | |
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[c9334b1] | 158 | void owl_editwin_new_style(owl_editwin *e, int newstyle, owl_history *h) |
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| 159 | { |
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[7d4fbcd] | 160 | char *ptr; |
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[10b866d] | 161 | |
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| 162 | owl_editwin_set_history(e, h); |
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[7d4fbcd] | 163 | if (e->style==newstyle) return; |
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| 164 | |
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| 165 | if (newstyle==OWL_EDITWIN_STYLE_MULTILINE) { |
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| 166 | e->style=newstyle; |
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| 167 | } else if (newstyle==OWL_EDITWIN_STYLE_ONELINE) { |
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| 168 | e->style=newstyle; |
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| 169 | |
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| 170 | /* nuke everything after the first line */ |
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| 171 | if (e->bufflen > 0) { |
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| 172 | ptr=strchr(e->buff, '\n')-1; |
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| 173 | if (ptr) { |
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| 174 | e->bufflen=ptr - e->buff; |
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| 175 | e->buff[e->bufflen]='\0'; |
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| 176 | e->buffx=0; |
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| 177 | e->buffy=0; |
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| 178 | } |
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| 179 | } |
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| 180 | } |
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| 181 | } |
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| 182 | |
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[c9334b1] | 183 | /* completly reinitialize the buffer */ |
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| 184 | void owl_editwin_fullclear(owl_editwin *e) |
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| 185 | { |
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[7d4fbcd] | 186 | owl_free(e->buff); |
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[10b866d] | 187 | owl_editwin_init(e, e->curswin, e->winlines, e->wincols, e->style, e->hist); |
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[7d4fbcd] | 188 | } |
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| 189 | |
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[c9334b1] | 190 | /* clear all text except for locktext and put the cursor at the |
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| 191 | * beginning |
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| 192 | */ |
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| 193 | void owl_editwin_clear(owl_editwin *e) |
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| 194 | { |
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| 195 | |
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[7d4fbcd] | 196 | int lock; |
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[10b866d] | 197 | int dotsend=e->dotsend; |
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[7d4fbcd] | 198 | char *locktext=NULL; |
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[cc6f009] | 199 | char echochar=e->echochar; |
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[10b866d] | 200 | |
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[7d4fbcd] | 201 | lock=0; |
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| 202 | if (e->lock > 0) { |
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| 203 | lock=1; |
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| 204 | |
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| 205 | locktext=owl_malloc(e->lock+20); |
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| 206 | strncpy(locktext, e->buff, e->lock); |
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| 207 | locktext[e->lock]='\0'; |
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| 208 | } |
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| 209 | |
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| 210 | owl_free(e->buff); |
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[10b866d] | 211 | owl_editwin_init(e, e->curswin, e->winlines, e->wincols, e->style, e->hist); |
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[7d4fbcd] | 212 | |
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| 213 | if (lock > 0) { |
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| 214 | owl_editwin_set_locktext(e, locktext); |
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| 215 | } |
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[10b866d] | 216 | if (dotsend) { |
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| 217 | owl_editwin_set_dotsend(e); |
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| 218 | } |
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[cc6f009] | 219 | if (echochar) { |
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| 220 | owl_editwin_set_echochar(e, echochar); |
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| 221 | } |
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[7d4fbcd] | 222 | |
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| 223 | if (locktext) owl_free(locktext); |
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| 224 | owl_editwin_adjust_for_locktext(e); |
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| 225 | } |
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| 226 | |
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[c9334b1] | 227 | /* malloc more space for the buffer */ |
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| 228 | void _owl_editwin_addspace(owl_editwin *e) |
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| 229 | { |
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[7d4fbcd] | 230 | e->buff=owl_realloc(e->buff, e->allocated+INCR); |
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| 231 | if (!e->buff) { |
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| 232 | /* error */ |
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| 233 | return; |
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| 234 | } |
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| 235 | e->allocated+=INCR; |
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| 236 | } |
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| 237 | |
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[c9334b1] | 238 | void owl_editwin_recenter(owl_editwin *e) |
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| 239 | { |
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[7d4fbcd] | 240 | e->topline=e->buffy-(e->winlines/2); |
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| 241 | if (e->topline<0) e->topline=0; |
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| 242 | if (e->topline>owl_editwin_get_numlines(e)) e->topline=owl_editwin_get_numlines(e); |
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| 243 | } |
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| 244 | |
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[c9334b1] | 245 | /* regenerate the text on the curses window */ |
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| 246 | /* if update == 1 then do a doupdate(), otherwise do not */ |
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| 247 | void owl_editwin_redisplay(owl_editwin *e, int update) |
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| 248 | { |
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[7d4fbcd] | 249 | |
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| 250 | char *ptr1, *ptr2, *ptr3, *buff; |
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[cf83b7a] | 251 | int i; |
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[7d4fbcd] | 252 | |
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| 253 | werase(e->curswin); |
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| 254 | wmove(e->curswin, 0, 0); |
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| 255 | |
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| 256 | /* start at topline */ |
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| 257 | ptr1=e->buff; |
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| 258 | for (i=0; i<e->topline; i++) { |
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| 259 | ptr2=strchr(ptr1, '\n'); |
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| 260 | if (!ptr2) { |
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| 261 | /* we're already on the last line */ |
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| 262 | break; |
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| 263 | } |
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| 264 | ptr1=ptr2+1; |
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| 265 | } |
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| 266 | /* ptr1 now stores the starting point */ |
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| 267 | |
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| 268 | /* find the ending point and store it in ptr3 */ |
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| 269 | ptr2=ptr1; |
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| 270 | ptr3=ptr1; |
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| 271 | for (i=0; i<e->winlines; i++) { |
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| 272 | ptr3=strchr(ptr2, '\n'); |
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| 273 | if (!ptr3) { |
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| 274 | /* we've hit the last line */ |
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| 275 | /* print everything to the end */ |
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| 276 | ptr3=e->buff+e->bufflen-1; |
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| 277 | ptr3--; |
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| 278 | break; |
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| 279 | } |
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| 280 | ptr2=ptr3+1; |
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| 281 | } |
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| 282 | ptr3+=2; |
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| 283 | |
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| 284 | buff=owl_malloc(ptr3-ptr1+50); |
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| 285 | strncpy(buff, ptr1, ptr3-ptr1); |
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| 286 | buff[ptr3-ptr1]='\0'; |
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[c9334b1] | 287 | if (e->echochar=='\0') { |
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| 288 | waddstr(e->curswin, buff); |
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| 289 | } else { |
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| 290 | /* translate to echochar, *except* for the locktext */ |
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| 291 | int len; |
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| 292 | int dolocklen=e->lock-(ptr1-e->buff); |
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| 293 | |
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| 294 | for (i=0; i<dolocklen; i++) { |
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| 295 | waddch(e->curswin, buff[i]); |
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| 296 | } |
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| 297 | len=strlen(buff); |
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| 298 | for (i=0; i<len-dolocklen; i++) { |
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| 299 | waddch(e->curswin, e->echochar); |
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| 300 | } |
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| 301 | } |
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[7d4fbcd] | 302 | wmove(e->curswin, e->buffy-e->topline, e->buffx); |
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| 303 | wnoutrefresh(e->curswin); |
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| 304 | if (update==1) { |
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| 305 | doupdate(); |
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| 306 | } |
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| 307 | owl_free(buff); |
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| 308 | } |
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| 309 | |
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| 310 | |
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[c9334b1] | 311 | /* linewrap the word just before the cursor. |
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| 312 | * returns 0 on success |
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| 313 | * returns -1 if we could not wrap. |
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| 314 | */ |
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| 315 | int _owl_editwin_linewrap_word(owl_editwin *e) |
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| 316 | { |
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[7d4fbcd] | 317 | int i, z; |
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| 318 | |
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| 319 | z=_owl_editwin_get_index_from_xy(e); |
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| 320 | /* move back and line wrap the previous word */ |
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| 321 | for (i=z-1; ; i--) { |
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| 322 | /* move back until you find a space or hit the beginning of the line */ |
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| 323 | if (e->buff[i]==' ') { |
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| 324 | /* replace the space with a newline */ |
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| 325 | e->buff[i]='\n'; |
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| 326 | e->buffy++; |
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| 327 | e->buffx=z-i-1; |
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| 328 | /* were we on the last line */ |
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| 329 | return(0); |
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| 330 | } else if (e->buff[i]=='\n' || i<=e->lock) { |
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| 331 | /* we hit the begginning of the line or the buffer, we cannot |
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| 332 | * wrap. |
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| 333 | */ |
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| 334 | return(-1); |
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| 335 | } |
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| 336 | } |
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| 337 | } |
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| 338 | |
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[c9334b1] | 339 | /* insert a character at the current point (shift later |
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| 340 | * characters over) |
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| 341 | */ |
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| 342 | void owl_editwin_insert_char(owl_editwin *e, char c) |
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| 343 | { |
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[7d4fbcd] | 344 | |
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| 345 | int z, i, ret; |
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| 346 | |
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| 347 | /* \r is \n */ |
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| 348 | if (c=='\r') { |
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| 349 | c='\n'; |
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| 350 | } |
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| 351 | |
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| 352 | if (c=='\n' && e->style==OWL_EDITWIN_STYLE_ONELINE) { |
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| 353 | /* perhaps later this will change some state that allows the string |
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| 354 | to be read */ |
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| 355 | return; |
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| 356 | } |
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| 357 | |
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| 358 | /* make sure there is enough memory for the new text */ |
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| 359 | if ((e->bufflen+1) > (e->allocated-5)) { |
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| 360 | _owl_editwin_addspace(e); |
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| 361 | } |
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| 362 | |
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| 363 | /* get the insertion point */ |
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| 364 | z=_owl_editwin_get_index_from_xy(e); |
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| 365 | |
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| 366 | /* If we're going to insert at the last column do word wrapping, unless it's a \n */ |
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| 367 | if ((e->buffx+1==e->wrapcol) && (c!='\n')) { |
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| 368 | ret=_owl_editwin_linewrap_word(e); |
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| 369 | if (ret==-1) { |
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| 370 | /* we couldn't wrap, insert a hard newline instead */ |
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| 371 | owl_editwin_insert_char(e, '\n'); |
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| 372 | } |
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| 373 | } |
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| 374 | |
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| 375 | z=_owl_editwin_get_index_from_xy(e); |
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| 376 | /* shift all the other characters right */ |
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| 377 | for (i=e->bufflen; i>z; i--) { |
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| 378 | e->buff[i]=e->buff[i-1]; |
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| 379 | } |
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| 380 | |
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| 381 | /* insert the new one */ |
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| 382 | e->buff[z]=c; |
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| 383 | |
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| 384 | /* housekeeping */ |
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| 385 | e->bufflen++; |
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| 386 | e->buff[e->bufflen]='\0'; |
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| 387 | |
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| 388 | /* advance the cursor */ |
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| 389 | if (c=='\n') { |
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| 390 | e->buffx=0; |
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| 391 | e->buffy++; |
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| 392 | } else { |
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| 393 | e->buffx++; |
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| 394 | } |
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| 395 | } |
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| 396 | |
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[c9334b1] | 397 | /* overwrite the character at the current point with 'c' */ |
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| 398 | void owl_editwin_overwrite_char(owl_editwin *e, char c) |
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| 399 | { |
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[7d4fbcd] | 400 | int z; |
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| 401 | |
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| 402 | /* \r is \n */ |
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| 403 | if (c=='\r') { |
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| 404 | c='\n'; |
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| 405 | } |
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| 406 | |
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| 407 | if (c=='\n' && e->style==OWL_EDITWIN_STYLE_ONELINE) { |
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| 408 | /* perhaps later this will change some state that allows the string |
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| 409 | to be read */ |
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| 410 | return; |
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| 411 | } |
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| 412 | |
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| 413 | z=_owl_editwin_get_index_from_xy(e); |
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| 414 | |
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| 415 | /* only if we are at the end of the buffer do we create new space */ |
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| 416 | if (z==e->bufflen) { |
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| 417 | if ((e->bufflen+1) > (e->allocated-5)) { |
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| 418 | _owl_editwin_addspace(e); |
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| 419 | } |
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| 420 | } |
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| 421 | |
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| 422 | e->buff[z]=c; |
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| 423 | |
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| 424 | /* housekeeping if we are at the end of the buffer */ |
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| 425 | if (z==e->bufflen) { |
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| 426 | e->bufflen++; |
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| 427 | e->buff[e->bufflen]='\0'; |
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| 428 | } |
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| 429 | |
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| 430 | /* advance the cursor */ |
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| 431 | if (c=='\n') { |
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| 432 | e->buffx=0; |
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| 433 | e->buffy++; |
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| 434 | } else { |
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| 435 | e->buffx++; |
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| 436 | } |
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| 437 | |
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| 438 | } |
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| 439 | |
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[c9334b1] | 440 | /* delete the character at the current point, following chars |
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| 441 | * shift left. |
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| 442 | */ |
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| 443 | void owl_editwin_delete_char(owl_editwin *e) |
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| 444 | { |
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[7d4fbcd] | 445 | int z, i; |
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| 446 | |
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| 447 | if (e->bufflen==0) return; |
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| 448 | |
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| 449 | /* get the deletion point */ |
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| 450 | z=_owl_editwin_get_index_from_xy(e); |
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| 451 | |
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| 452 | if (z==e->bufflen) return; |
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| 453 | |
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| 454 | for (i=z; i<e->bufflen; i++) { |
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| 455 | e->buff[i]=e->buff[i+1]; |
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| 456 | } |
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| 457 | e->bufflen--; |
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| 458 | e->buff[e->bufflen]='\0'; |
---|
| 459 | } |
---|
| 460 | |
---|
[c9334b1] | 461 | /* Swap the character at point with the character at point-1 and |
---|
| 462 | * advance the pointer. If point is at beginning of buffer do |
---|
| 463 | * nothing. If point is after the last character swap point-1 with |
---|
| 464 | * point-2. (Behaves as observed in tcsh and emacs). |
---|
| 465 | */ |
---|
| 466 | void owl_editwin_transpose_chars(owl_editwin *e) |
---|
| 467 | { |
---|
[f2e36b5] | 468 | int z; |
---|
| 469 | char tmp; |
---|
| 470 | |
---|
| 471 | if (e->bufflen==0) return; |
---|
| 472 | |
---|
| 473 | /* get the cursor point */ |
---|
| 474 | z=_owl_editwin_get_index_from_xy(e); |
---|
| 475 | |
---|
| 476 | if (z==e->bufflen) { |
---|
| 477 | /* point is after last character */ |
---|
| 478 | z--; |
---|
| 479 | } |
---|
| 480 | |
---|
| 481 | if (z-1 < e->lock) { |
---|
| 482 | /* point is at beginning of buffer, do nothing */ |
---|
| 483 | return; |
---|
| 484 | } |
---|
| 485 | |
---|
| 486 | tmp=e->buff[z]; |
---|
| 487 | e->buff[z]=e->buff[z-1]; |
---|
| 488 | e->buff[z-1]=tmp; |
---|
| 489 | owl_editwin_key_right(e); |
---|
| 490 | } |
---|
| 491 | |
---|
[c9334b1] | 492 | /* insert 'string' at the current point, later text is shifted |
---|
| 493 | * right |
---|
| 494 | */ |
---|
| 495 | void owl_editwin_insert_string(owl_editwin *e, char *string) |
---|
| 496 | { |
---|
[7d4fbcd] | 497 | int i, j; |
---|
| 498 | |
---|
| 499 | j=strlen(string); |
---|
| 500 | for (i=0; i<j; i++) { |
---|
| 501 | owl_editwin_insert_char(e, string[i]); |
---|
| 502 | } |
---|
| 503 | } |
---|
| 504 | |
---|
[c9334b1] | 505 | /* write 'string' at the current point, overwriting text that is |
---|
| 506 | * already there |
---|
| 507 | */ |
---|
| 508 | |
---|
| 509 | void owl_editwin_overwrite_string(owl_editwin *e, char *string) |
---|
| 510 | { |
---|
[7d4fbcd] | 511 | int i, j; |
---|
| 512 | |
---|
| 513 | j=strlen(string); |
---|
| 514 | for (i=0; i<j; i++) { |
---|
| 515 | owl_editwin_overwrite_char(e, string[i]); |
---|
| 516 | } |
---|
| 517 | } |
---|
| 518 | |
---|
[c9334b1] | 519 | /* get the index into e->buff for the current cursor |
---|
| 520 | * position. |
---|
| 521 | */ |
---|
| 522 | int _owl_editwin_get_index_from_xy(owl_editwin *e) |
---|
| 523 | { |
---|
[7d4fbcd] | 524 | int i; |
---|
| 525 | char *ptr1, *ptr2; |
---|
| 526 | |
---|
| 527 | if (e->bufflen==0) return(0); |
---|
| 528 | |
---|
| 529 | /* first go to the yth line */ |
---|
| 530 | ptr1=e->buff; |
---|
| 531 | for (i=0; i<e->buffy; i++) { |
---|
| 532 | ptr2=strchr(ptr1, '\n'); |
---|
| 533 | if (!ptr2) { |
---|
| 534 | /* we're already on the last line */ |
---|
| 535 | break; |
---|
| 536 | } |
---|
| 537 | ptr1=ptr2+1; |
---|
| 538 | } |
---|
| 539 | |
---|
| 540 | /* now go to the xth character */ |
---|
| 541 | ptr2=strchr(ptr1, '\n'); |
---|
| 542 | if (!ptr2) { |
---|
| 543 | ptr2=e->buff+e->bufflen; |
---|
| 544 | } |
---|
| 545 | |
---|
| 546 | if ((ptr2-ptr1) < e->buffx) { |
---|
| 547 | ptr1=ptr2-1; |
---|
| 548 | } else { |
---|
| 549 | ptr1+=e->buffx; |
---|
| 550 | } |
---|
| 551 | |
---|
| 552 | /* printf("DEBUG: index is %i\r\n", ptr1-e->buff); */ |
---|
| 553 | return(ptr1-e->buff); |
---|
| 554 | } |
---|
| 555 | |
---|
[c9334b1] | 556 | void _owl_editwin_set_xy_by_index(owl_editwin *e, int index) |
---|
| 557 | { |
---|
[7d4fbcd] | 558 | int z, i; |
---|
| 559 | |
---|
| 560 | z=_owl_editwin_get_index_from_xy(e); |
---|
| 561 | if (index>z) { |
---|
| 562 | for (i=0; i<index-z; i++) { |
---|
| 563 | owl_editwin_key_right(e); |
---|
| 564 | } |
---|
| 565 | } else if (index<z) { |
---|
| 566 | for (i=0; i<z-index; i++) { |
---|
| 567 | owl_editwin_key_left(e); |
---|
| 568 | } |
---|
| 569 | } |
---|
| 570 | } |
---|
| 571 | |
---|
[c9334b1] | 572 | void owl_editwin_adjust_for_locktext(owl_editwin *e) |
---|
| 573 | { |
---|
[7d4fbcd] | 574 | /* if we happen to have the cursor over locked text |
---|
| 575 | * move it to be out of the locktext region */ |
---|
| 576 | if (_owl_editwin_get_index_from_xy(e)<e->lock) { |
---|
| 577 | _owl_editwin_set_xy_by_index(e, e->lock); |
---|
| 578 | } |
---|
| 579 | } |
---|
| 580 | |
---|
[c9334b1] | 581 | void owl_editwin_backspace(owl_editwin *e) |
---|
| 582 | { |
---|
[7d4fbcd] | 583 | /* delete the char before the current one |
---|
| 584 | * and shift later chars left |
---|
| 585 | */ |
---|
| 586 | if (_owl_editwin_get_index_from_xy(e) > e->lock) { |
---|
| 587 | owl_editwin_key_left(e); |
---|
| 588 | owl_editwin_delete_char(e); |
---|
| 589 | } |
---|
| 590 | owl_editwin_adjust_for_locktext(e); |
---|
| 591 | } |
---|
| 592 | |
---|
[c9334b1] | 593 | void owl_editwin_key_up(owl_editwin *e) |
---|
| 594 | { |
---|
[7d4fbcd] | 595 | if (e->buffy > 0) e->buffy--; |
---|
| 596 | if (e->buffx >= owl_editwin_get_numchars_on_line(e, e->buffy)) { |
---|
| 597 | e->buffx=owl_editwin_get_numchars_on_line(e, e->buffy); |
---|
| 598 | } |
---|
| 599 | |
---|
| 600 | /* do we need to scroll? */ |
---|
| 601 | if (e->buffy-e->topline < 0) { |
---|
| 602 | e->topline-=e->winlines/2; |
---|
| 603 | } |
---|
| 604 | |
---|
| 605 | owl_editwin_adjust_for_locktext(e); |
---|
| 606 | } |
---|
| 607 | |
---|
[c9334b1] | 608 | void owl_editwin_key_down(owl_editwin *e) |
---|
| 609 | { |
---|
[7d4fbcd] | 610 | /* move down if we can */ |
---|
| 611 | if (e->buffy+1 < owl_editwin_get_numlines(e)) e->buffy++; |
---|
| 612 | |
---|
| 613 | /* if we're past the last character move back */ |
---|
| 614 | if (e->buffx >= owl_editwin_get_numchars_on_line(e, e->buffy)) { |
---|
| 615 | e->buffx=owl_editwin_get_numchars_on_line(e, e->buffy); |
---|
| 616 | } |
---|
| 617 | |
---|
| 618 | /* do we need to scroll? */ |
---|
| 619 | if (e->buffy-e->topline > e->winlines) { |
---|
| 620 | e->topline+=e->winlines/2; |
---|
| 621 | } |
---|
| 622 | |
---|
| 623 | /* adjust for locktext */ |
---|
| 624 | owl_editwin_adjust_for_locktext(e); |
---|
| 625 | } |
---|
| 626 | |
---|
[c9334b1] | 627 | void owl_editwin_key_left(owl_editwin *e) |
---|
| 628 | { |
---|
[7d4fbcd] | 629 | /* move left if we can, and maybe up a line */ |
---|
| 630 | if (e->buffx>0) { |
---|
| 631 | e->buffx--; |
---|
| 632 | } else if (e->buffy>0) { |
---|
| 633 | e->buffy--; |
---|
| 634 | e->buffx=owl_editwin_get_numchars_on_line(e, e->buffy); |
---|
| 635 | } |
---|
| 636 | |
---|
| 637 | /* do we need to scroll up? */ |
---|
| 638 | if (e->buffy-e->topline < 0) { |
---|
| 639 | e->topline-=e->winlines/2; |
---|
| 640 | } |
---|
| 641 | |
---|
| 642 | /* make sure to avoid locktext */ |
---|
| 643 | owl_editwin_adjust_for_locktext(e); |
---|
| 644 | } |
---|
| 645 | |
---|
[c9334b1] | 646 | void owl_editwin_key_right(owl_editwin *e) |
---|
| 647 | { |
---|
[7d4fbcd] | 648 | int i; |
---|
| 649 | |
---|
| 650 | /* move right if we can, and skip down a line if needed */ |
---|
| 651 | i=owl_editwin_get_numchars_on_line(e, e->buffy); |
---|
| 652 | if (e->buffx < i) { |
---|
| 653 | e->buffx++; |
---|
| 654 | /* } else if (e->buffy+1 < owl_editwin_get_numlines(e)) { */ |
---|
| 655 | } else if (_owl_editwin_get_index_from_xy(e) < e->bufflen) { |
---|
| 656 | if (e->style==OWL_EDITWIN_STYLE_MULTILINE) { |
---|
| 657 | e->buffx=0; |
---|
| 658 | e->buffy++; |
---|
| 659 | } |
---|
| 660 | } |
---|
| 661 | |
---|
| 662 | /* do we need to scroll down? */ |
---|
| 663 | if (e->buffy-e->topline >= e->winlines) { |
---|
| 664 | e->topline+=e->winlines/2; |
---|
| 665 | } |
---|
| 666 | } |
---|
| 667 | |
---|
[c9334b1] | 668 | void owl_editwin_move_to_nextword(owl_editwin *e) |
---|
| 669 | { |
---|
[7d4fbcd] | 670 | int i, x; |
---|
| 671 | |
---|
| 672 | /* if we're starting on a space, find the first non-space */ |
---|
| 673 | i=_owl_editwin_get_index_from_xy(e); |
---|
| 674 | if (e->buff[i]==' ') { |
---|
| 675 | for (x=i; x<e->bufflen; x++) { |
---|
| 676 | if (e->buff[x]!=' ' && e->buff[x]!='\n') { |
---|
| 677 | _owl_editwin_set_xy_by_index(e, x); |
---|
| 678 | break; |
---|
| 679 | } |
---|
| 680 | } |
---|
| 681 | } |
---|
| 682 | |
---|
| 683 | /* find the next space, newline or end of line and go there, if |
---|
| 684 | already at the end of the line, continue on to the next */ |
---|
| 685 | i=owl_editwin_get_numchars_on_line(e, e->buffy); |
---|
| 686 | if (e->buffx < i) { |
---|
| 687 | /* move right till end of line */ |
---|
| 688 | while (e->buffx < i) { |
---|
| 689 | e->buffx++; |
---|
| 690 | if (e->buff[_owl_editwin_get_index_from_xy(e)]==' ') return; |
---|
| 691 | if (e->buffx == i) return; |
---|
| 692 | } |
---|
| 693 | } else if (e->buffx == i) { |
---|
| 694 | /* try to move down */ |
---|
| 695 | if (e->style==OWL_EDITWIN_STYLE_MULTILINE) { |
---|
| 696 | if (e->buffy+1 < owl_editwin_get_numlines(e)) { |
---|
| 697 | e->buffx=0; |
---|
| 698 | e->buffy++; |
---|
| 699 | owl_editwin_move_to_nextword(e); |
---|
| 700 | } |
---|
| 701 | } |
---|
| 702 | } |
---|
| 703 | } |
---|
| 704 | |
---|
[c9334b1] | 705 | /* go backwards to the last non-space character |
---|
| 706 | */ |
---|
| 707 | void owl_editwin_move_to_previousword(owl_editwin *e) |
---|
| 708 | { |
---|
[7d4fbcd] | 709 | int i, x; |
---|
| 710 | |
---|
| 711 | /* are we already at the beginning of the word? */ |
---|
| 712 | i=_owl_editwin_get_index_from_xy(e); |
---|
| 713 | if ( (e->buff[i]!=' ' && e->buff[i]!='\n' && e->buff[i]!='\0') && |
---|
| 714 | (e->buff[i-1]==' ' || e->buff[i-1]=='\n') ) { |
---|
| 715 | owl_editwin_key_left(e); |
---|
| 716 | } |
---|
| 717 | |
---|
| 718 | /* are we starting on a space character? */ |
---|
| 719 | i=_owl_editwin_get_index_from_xy(e); |
---|
| 720 | if (e->buff[i]==' ' || e->buff[i]=='\n' || e->buff[i]=='\0') { |
---|
| 721 | /* find the first non-space */ |
---|
| 722 | for (x=i; x>=e->lock; x--) { |
---|
| 723 | if (e->buff[x]!=' ' && e->buff[x]!='\n' && e->buff[x]!='\0') { |
---|
| 724 | _owl_editwin_set_xy_by_index(e, x); |
---|
| 725 | break; |
---|
| 726 | } |
---|
| 727 | } |
---|
| 728 | } |
---|
| 729 | |
---|
| 730 | /* find the last non-space */ |
---|
| 731 | i=_owl_editwin_get_index_from_xy(e); |
---|
| 732 | for (x=i; x>=e->lock; x--) { |
---|
| 733 | if (e->buff[x-1]==' ' || e->buff[x-1]=='\n') { |
---|
| 734 | _owl_editwin_set_xy_by_index(e, x); |
---|
| 735 | break; |
---|
| 736 | } |
---|
| 737 | } |
---|
| 738 | _owl_editwin_set_xy_by_index(e, x); |
---|
| 739 | } |
---|
| 740 | |
---|
| 741 | |
---|
[c9334b1] | 742 | void owl_editwin_delete_nextword(owl_editwin *e) |
---|
| 743 | { |
---|
[7d4fbcd] | 744 | int z; |
---|
| 745 | |
---|
| 746 | if (e->bufflen==0) return; |
---|
| 747 | |
---|
| 748 | /* if we start out on a space character then gobble all the spaces |
---|
| 749 | up first */ |
---|
| 750 | while (1) { |
---|
| 751 | z=_owl_editwin_get_index_from_xy(e); |
---|
| 752 | if (e->buff[z]==' ' || e->buff[z]=='\n') { |
---|
| 753 | owl_editwin_delete_char(e); |
---|
| 754 | } else { |
---|
| 755 | break; |
---|
| 756 | } |
---|
| 757 | } |
---|
| 758 | |
---|
| 759 | /* then nuke the next word */ |
---|
| 760 | while (1) { |
---|
| 761 | z=_owl_editwin_get_index_from_xy(e); |
---|
[4c46dfd] | 762 | /* z == e->bufflen check added to prevent a hang I (nelhage) have |
---|
| 763 | seen repeatedly while using owl. I'm not sure precisely what |
---|
| 764 | conditions lead to it. */ |
---|
| 765 | if (z == e->bufflen |
---|
| 766 | || e->buff[z+1]==' ' || e->buff[z+1]=='\n' || e->buff[z+1]=='\0') break; |
---|
[7d4fbcd] | 767 | owl_editwin_delete_char(e); |
---|
| 768 | } |
---|
| 769 | owl_editwin_delete_char(e); |
---|
| 770 | } |
---|
| 771 | |
---|
[c9334b1] | 772 | void owl_editwin_delete_previousword(owl_editwin *e) |
---|
| 773 | { |
---|
[b68f9cd] | 774 | /* go backwards to the last non-space character, then delete chars */ |
---|
| 775 | int i, startpos, endpos; |
---|
| 776 | |
---|
| 777 | startpos = _owl_editwin_get_index_from_xy(e); |
---|
| 778 | owl_editwin_move_to_previousword(e); |
---|
| 779 | endpos = _owl_editwin_get_index_from_xy(e); |
---|
| 780 | for (i=0; i<startpos-endpos; i++) { |
---|
| 781 | owl_editwin_delete_char(e); |
---|
| 782 | } |
---|
| 783 | } |
---|
| 784 | |
---|
[c9334b1] | 785 | void owl_editwin_delete_to_endofline(owl_editwin *e) |
---|
| 786 | { |
---|
[7d4fbcd] | 787 | int i; |
---|
| 788 | |
---|
| 789 | if (owl_editwin_get_numchars_on_line(e, e->buffy)>e->buffx) { |
---|
| 790 | /* normal line */ |
---|
| 791 | i=_owl_editwin_get_index_from_xy(e); |
---|
| 792 | while(i < e->bufflen) { |
---|
| 793 | if (e->buff[i]!='\n') { |
---|
| 794 | owl_editwin_delete_char(e); |
---|
| 795 | } else if ((e->buff[i]=='\n') && (i==e->bufflen-1)) { |
---|
| 796 | owl_editwin_delete_char(e); |
---|
| 797 | } else { |
---|
| 798 | return; |
---|
| 799 | } |
---|
| 800 | } |
---|
| 801 | } else if (e->buffy+1 < owl_editwin_get_numlines(e)) { |
---|
| 802 | /* line with cursor at the end but not on very last line */ |
---|
| 803 | owl_editwin_key_right(e); |
---|
| 804 | owl_editwin_backspace(e); |
---|
| 805 | } |
---|
| 806 | } |
---|
| 807 | |
---|
[c9334b1] | 808 | void owl_editwin_move_to_line_end(owl_editwin *e) |
---|
| 809 | { |
---|
[7d4fbcd] | 810 | e->buffx=owl_editwin_get_numchars_on_line(e, e->buffy); |
---|
| 811 | } |
---|
| 812 | |
---|
[c9334b1] | 813 | void owl_editwin_move_to_line_start(owl_editwin *e) |
---|
| 814 | { |
---|
[7d4fbcd] | 815 | e->buffx=0; |
---|
| 816 | owl_editwin_adjust_for_locktext(e); |
---|
| 817 | } |
---|
| 818 | |
---|
[c9334b1] | 819 | void owl_editwin_move_to_end(owl_editwin *e) |
---|
| 820 | { |
---|
[7d4fbcd] | 821 | /* go to last char */ |
---|
| 822 | e->buffy=owl_editwin_get_numlines(e)-1; |
---|
| 823 | e->buffx=owl_editwin_get_numchars_on_line(e, e->buffy); |
---|
| 824 | owl_editwin_key_right(e); |
---|
| 825 | |
---|
| 826 | /* do we need to scroll? */ |
---|
[12c35df] | 827 | /* |
---|
[7d4fbcd] | 828 | if (e->buffy-e->topline > e->winlines) { |
---|
| 829 | e->topline+=e->winlines/2; |
---|
| 830 | } |
---|
[12c35df] | 831 | */ |
---|
| 832 | owl_editwin_recenter(e); |
---|
[7d4fbcd] | 833 | } |
---|
| 834 | |
---|
[c9334b1] | 835 | void owl_editwin_move_to_top(owl_editwin *e) |
---|
| 836 | { |
---|
[7d4fbcd] | 837 | _owl_editwin_set_xy_by_index(e, 0); |
---|
| 838 | |
---|
| 839 | /* do we need to scroll? */ |
---|
| 840 | e->topline=0; |
---|
| 841 | |
---|
| 842 | owl_editwin_adjust_for_locktext(e); |
---|
| 843 | } |
---|
| 844 | |
---|
[c9334b1] | 845 | void owl_editwin_fill_paragraph(owl_editwin *e) |
---|
| 846 | { |
---|
[7d4fbcd] | 847 | int i, save; |
---|
| 848 | |
---|
| 849 | /* save our starting point */ |
---|
| 850 | save=_owl_editwin_get_index_from_xy(e); |
---|
| 851 | |
---|
| 852 | /* scan back to the beginning of this paragraph */ |
---|
| 853 | for (i=save; i>=e->lock; i--) { |
---|
| 854 | if ( (i<=e->lock) || |
---|
| 855 | ((e->buff[i]=='\n') && (e->buff[i-1]=='\n'))) { |
---|
| 856 | _owl_editwin_set_xy_by_index(e, i+1); |
---|
| 857 | break; |
---|
| 858 | } |
---|
| 859 | } |
---|
| 860 | |
---|
| 861 | /* main loop */ |
---|
| 862 | while (1) { |
---|
| 863 | i=_owl_editwin_get_index_from_xy(e); |
---|
| 864 | |
---|
| 865 | /* bail if we hit the end of the buffer */ |
---|
| 866 | if (i>=e->bufflen) break; |
---|
| 867 | |
---|
| 868 | /* bail if we hit the end of the paragraph */ |
---|
| 869 | if (e->buff[i]=='\n' && e->buff[i+1]=='\n') break; |
---|
| 870 | |
---|
| 871 | /* if we've travelled too far, linewrap */ |
---|
| 872 | if ((e->buffx) >= e->fillcol) { |
---|
| 873 | _owl_editwin_linewrap_word(e); |
---|
| 874 | } |
---|
| 875 | |
---|
| 876 | /* did we hit the end of a line too soon? */ |
---|
| 877 | i=_owl_editwin_get_index_from_xy(e); |
---|
| 878 | if (e->buff[i]=='\n' && e->buffx<e->fillcol-1) { |
---|
| 879 | /* ********* we need to make sure we don't pull in a word that's too long ***********/ |
---|
| 880 | e->buff[i]=' '; |
---|
| 881 | } |
---|
| 882 | |
---|
| 883 | /* fix spacing */ |
---|
| 884 | i=_owl_editwin_get_index_from_xy(e); |
---|
| 885 | if (e->buff[i]==' ' && e->buff[i+1]==' ') { |
---|
| 886 | if (e->buff[i-1]=='.' || e->buff[i-1]=='!' || e->buff[i-1]=='?') { |
---|
| 887 | owl_editwin_key_right(e); |
---|
| 888 | } else { |
---|
| 889 | owl_editwin_delete_char(e); |
---|
| 890 | /* if we did this ahead of the save point, adjust it */ |
---|
| 891 | if (i<save) save--; |
---|
| 892 | } |
---|
| 893 | } else { |
---|
| 894 | owl_editwin_key_right(e); |
---|
| 895 | } |
---|
| 896 | |
---|
| 897 | } |
---|
| 898 | |
---|
| 899 | /* put cursor back at starting point */ |
---|
| 900 | _owl_editwin_set_xy_by_index(e, save); |
---|
| 901 | |
---|
| 902 | /* do we need to scroll? */ |
---|
| 903 | if (e->buffy-e->topline < 0) { |
---|
| 904 | e->topline-=e->winlines/2; |
---|
| 905 | } |
---|
| 906 | } |
---|
| 907 | |
---|
[cf83b7a] | 908 | /* returns true if only whitespace remains */ |
---|
[c9334b1] | 909 | int owl_editwin_is_at_end(owl_editwin *e) |
---|
| 910 | { |
---|
[10b866d] | 911 | int cur=_owl_editwin_get_index_from_xy(e); |
---|
[c9334b1] | 912 | return (only_whitespace(e->buff+cur)); |
---|
[217a43e] | 913 | } |
---|
| 914 | |
---|
[c9334b1] | 915 | int owl_editwin_check_dotsend(owl_editwin *e) |
---|
| 916 | { |
---|
[7d4fbcd] | 917 | int i; |
---|
| 918 | |
---|
| 919 | if (!e->dotsend) return(0); |
---|
| 920 | for (i=e->bufflen-1; i>0; i--) { |
---|
| 921 | if (e->buff[i] == '.' |
---|
| 922 | && (e->buff[i-1] == '\n' || e->buff[i-1] == '\r') |
---|
| 923 | && (e->buff[i+1] == '\n' || e->buff[i+1] == '\r')) { |
---|
| 924 | e->bufflen = i; |
---|
| 925 | e->buff[i] = '\0'; |
---|
| 926 | return(1); |
---|
| 927 | } |
---|
[601a9e0] | 928 | if (!isspace((int) e->buff[i])) { |
---|
[7d4fbcd] | 929 | return(0); |
---|
| 930 | } |
---|
| 931 | } |
---|
| 932 | return(0); |
---|
| 933 | } |
---|
| 934 | |
---|
[c9334b1] | 935 | void owl_editwin_post_process_char(owl_editwin *e, int j) |
---|
| 936 | { |
---|
[7d4fbcd] | 937 | /* check if we need to scroll down */ |
---|
| 938 | if (e->buffy-e->topline >= e->winlines) { |
---|
| 939 | e->topline+=e->winlines/2; |
---|
| 940 | } |
---|
| 941 | if ((j==13 || j==10) && owl_editwin_check_dotsend(e)) { |
---|
| 942 | owl_command_editmulti_done(e); |
---|
| 943 | return; |
---|
| 944 | } |
---|
| 945 | owl_editwin_redisplay(e, 0); |
---|
| 946 | } |
---|
| 947 | |
---|
[c9334b1] | 948 | void owl_editwin_process_char(owl_editwin *e, int j) |
---|
| 949 | { |
---|
[7d4fbcd] | 950 | if (j == ERR) return; |
---|
| 951 | if (j>127 || ((j<32) && (j!=10) && (j!=13))) { |
---|
| 952 | return; |
---|
| 953 | } else { |
---|
| 954 | owl_editwin_insert_char(e, j); |
---|
| 955 | } |
---|
| 956 | } |
---|
| 957 | |
---|
[c9334b1] | 958 | char *owl_editwin_get_text(owl_editwin *e) |
---|
| 959 | { |
---|
[7d4fbcd] | 960 | return(e->buff+e->lock); |
---|
| 961 | } |
---|
| 962 | |
---|
[c9334b1] | 963 | int owl_editwin_get_numchars_on_line(owl_editwin *e, int line) |
---|
| 964 | { |
---|
[7d4fbcd] | 965 | int i; |
---|
| 966 | char *ptr1, *ptr2; |
---|
| 967 | |
---|
| 968 | if (e->bufflen==0) return(0); |
---|
| 969 | |
---|
| 970 | /* first go to the yth line */ |
---|
| 971 | ptr1=e->buff; |
---|
| 972 | for (i=0; i<line; i++) { |
---|
| 973 | ptr2=strchr(ptr1, '\n'); |
---|
| 974 | if (!ptr2) { |
---|
| 975 | /* we're already on the last line */ |
---|
| 976 | return(0); |
---|
| 977 | } |
---|
| 978 | ptr1=ptr2+1; |
---|
| 979 | } |
---|
| 980 | |
---|
| 981 | /* now go to the xth character */ |
---|
| 982 | ptr2=strchr(ptr1, '\n'); |
---|
| 983 | if (!ptr2) { |
---|
| 984 | return(e->buff + e->bufflen - ptr1); |
---|
| 985 | } |
---|
| 986 | return(ptr2-ptr1); /* don't count the newline for now */ |
---|
| 987 | } |
---|
| 988 | |
---|
[c9334b1] | 989 | int owl_editwin_get_numlines(owl_editwin *e) |
---|
| 990 | { |
---|
[7d4fbcd] | 991 | return(owl_text_num_lines(e->buff)); |
---|
| 992 | } |
---|
| 993 | |
---|