| 1 | /* move5.c */
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| 2 |
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| 3 | /* Author:
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| 4 | * Steve Kirkendall
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| 5 | * 14407 SW Teal Blvd. #C
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| 6 | * Beaverton, OR 97005
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| 7 | * kirkenda@cs.pdx.edu
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| 8 | */
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| 9 |
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| 10 |
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| 11 | /* This file contains the word-oriented movement functions */
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| 12 |
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| 13 | #include "config.h"
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| 14 | #include "ctype.h"
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| 15 | #include "vi.h"
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| 16 |
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| 17 | MARK m_fword(m, cnt, cmd, prevkey)
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| 18 | MARK m; /* movement is relative to this mark */
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| 19 | long cnt; /* a numeric argument */
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| 20 | int cmd; /* either 'w' or 'W' */
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| 21 | int prevkey;/* previous command... if 'c' then exclude whitespace */
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| 22 | {
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| 23 | REG long l;
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| 24 | REG char *text;
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| 25 | REG int i;
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| 26 |
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| 27 | DEFAULT(1);
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| 28 |
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| 29 | l = markline(m);
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| 30 | pfetch(l);
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| 31 | text = ptext + markidx(m);
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| 32 |
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| 33 | #ifndef CRUNCH
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| 34 | /* As a special case, "cw" or "cW" on whitespace without a count
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| 35 | * treats the single whitespace character under the cursor as a word.
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| 36 | */
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| 37 | if (cnt == 1L && prevkey == 'c' && isspace(*text))
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| 38 | {
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| 39 | return m + 1L;
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| 40 | }
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| 41 | #endif
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| 42 |
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| 43 | while (cnt-- > 0) /* yes, ASSIGNMENT! */
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| 44 | {
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| 45 | i = *text++;
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| 46 |
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| 47 | if (cmd == 'W')
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| 48 | {
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| 49 | /* include any non-whitespace */
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| 50 | while (i && !isspace(i))
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| 51 | {
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| 52 | i = *text++;
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| 53 | }
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| 54 | }
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| 55 | else if (isalnum(i) || i == '_')
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| 56 | {
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| 57 | /* include an alphanumeric word */
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| 58 | while (i && isalnum(i))
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| 59 | {
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| 60 | i = *text++;
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| 61 | }
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| 62 | }
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| 63 | else
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| 64 | {
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| 65 | /* include contiguous punctuation */
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| 66 | while (i && !isalnum(i) && !isspace(i))
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| 67 | {
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| 68 | i = *text++;
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| 69 | }
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| 70 | }
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| 71 |
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| 72 | /* if not part of "cw" or "cW" command... */
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| 73 | if (prevkey != 'c' || cnt > 0)
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| 74 | {
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| 75 | /* include trailing whitespace */
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| 76 | while (!i || isspace(i))
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| 77 | {
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| 78 | /* did we hit the end of this line? */
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| 79 | if (!i)
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| 80 | {
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| 81 | /* "dw" shouldn't delete newline after word */
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| 82 | if (prevkey && cnt == 0)
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| 83 | {
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| 84 | break;
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| 85 | }
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| 86 |
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| 87 | /* move to next line, if there is one */
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| 88 | l++;
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| 89 | if (l > nlines)
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| 90 | {
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| 91 | return MARK_UNSET;
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| 92 | }
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| 93 | pfetch(l);
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| 94 | text = ptext;
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| 95 | }
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| 96 |
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| 97 | i = *text++;
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| 98 | }
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| 99 | }
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| 100 | text--;
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| 101 | }
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| 102 |
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| 103 | /* if argument to operator, then back off 1 char since "w" and "W"
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| 104 | * include the last char in the affected text.
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| 105 | */
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| 106 | if (prevkey)
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| 107 | {
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| 108 | text--;
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| 109 | }
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| 110 |
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| 111 | /* construct a MARK for this place */
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| 112 | m = buildmark(text);
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| 113 | return m;
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| 114 | }
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| 115 |
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| 116 |
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| 117 | MARK m_bword(m, cnt, cmd)
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| 118 | MARK m; /* movement is relative to this mark */
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| 119 | long cnt; /* a numeric argument */
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| 120 | int cmd; /* either 'b' or 'B' */
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| 121 | {
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| 122 | REG long l;
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| 123 | REG char *text;
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| 124 |
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| 125 | DEFAULT(1);
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| 126 |
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| 127 | l = markline(m);
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| 128 | pfetch(l);
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| 129 | text = ptext + markidx(m);
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| 130 | while (cnt-- > 0) /* yes, ASSIGNMENT! */
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| 131 | {
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| 132 | text--;
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| 133 |
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| 134 | /* include preceding whitespace */
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| 135 | while (text < ptext || isspace(*text))
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| 136 | {
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| 137 | /* did we hit the end of this line? */
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| 138 | if (text < ptext)
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| 139 | {
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| 140 | /* move to preceding line, if there is one */
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| 141 | l--;
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| 142 | if (l <= 0)
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| 143 | {
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| 144 | return MARK_UNSET;
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| 145 | }
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| 146 | pfetch(l);
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| 147 | text = ptext + plen - 1;
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| 148 | }
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| 149 | else
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| 150 | {
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| 151 | text--;
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| 152 | }
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| 153 | }
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| 154 |
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| 155 | if (cmd == 'B')
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| 156 | {
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| 157 | /* include any non-whitespace */
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| 158 | while (text >= ptext && !isspace(*text))
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| 159 | {
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| 160 | text--;
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| 161 | }
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| 162 | }
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| 163 | else if (isalnum(*text) || *text == '_')
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| 164 | {
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| 165 | /* include an alphanumeric word */
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| 166 | while (text >= ptext && isalnum(*text))
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| 167 | {
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| 168 | text--;
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| 169 | }
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| 170 | }
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| 171 | else
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| 172 | {
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| 173 | /* include contiguous punctuation */
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| 174 | while (text >= ptext && !isalnum(*text) && !isspace(*text))
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| 175 | {
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| 176 | text--;
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| 177 | }
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| 178 | }
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| 179 | text++;
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| 180 | }
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| 181 |
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| 182 | /* construct a MARK for this place */
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| 183 | m = buildmark(text);
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| 184 | return m;
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| 185 | }
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| 186 |
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| 187 | MARK m_eword(m, cnt, cmd)
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| 188 | MARK m; /* movement is relative to this mark */
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| 189 | long cnt; /* a numeric argument */
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| 190 | int cmd; /* either 'e' or 'E' */
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| 191 | {
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| 192 | REG long l;
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| 193 | REG char *text;
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| 194 | REG int i;
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| 195 |
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| 196 | DEFAULT(1);
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| 197 |
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| 198 | l = markline(m);
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| 199 | pfetch(l);
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| 200 | text = ptext + markidx(m);
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| 201 | while (cnt-- > 0) /* yes, ASSIGNMENT! */
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| 202 | {
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| 203 | if (*text)
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| 204 | text++;
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| 205 | i = *text++;
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| 206 |
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| 207 | /* include preceding whitespace */
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| 208 | while (!i || isspace(i))
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| 209 | {
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| 210 | /* did we hit the end of this line? */
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| 211 | if (!i)
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| 212 | {
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| 213 | /* move to next line, if there is one */
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| 214 | l++;
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| 215 | if (l > nlines)
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| 216 | {
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| 217 | return MARK_UNSET;
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| 218 | }
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| 219 | pfetch(l);
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| 220 | text = ptext;
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| 221 | }
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| 222 |
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| 223 | i = *text++;
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| 224 | }
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| 225 |
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| 226 | if (cmd == 'E')
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| 227 | {
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| 228 | /* include any non-whitespace */
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| 229 | while (i && !isspace(i))
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| 230 | {
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| 231 | i = *text++;
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| 232 | }
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| 233 | }
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| 234 | else if (isalnum(i) || i == '_')
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| 235 | {
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| 236 | /* include an alphanumeric word */
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| 237 | while (i && isalnum(i))
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| 238 | {
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| 239 | i = *text++;
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| 240 | }
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| 241 | }
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| 242 | else
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| 243 | {
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| 244 | /* include contiguous punctuation */
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| 245 | while (i && !isalnum(i) && !isspace(i))
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| 246 | {
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| 247 | i = *text++;
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| 248 | }
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| 249 | }
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| 250 | text -= 2;
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| 251 | }
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| 252 |
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| 253 | /* construct a MARK for this place */
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| 254 | m = buildmark(text);
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| 255 | return m;
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| 256 | }
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