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/* move5.c */
/* Author:
* Steve Kirkendall
* 14407 SW Teal Blvd. #C
* Beaverton, OR 97005
* kirkenda@cs.pdx.edu
*/
/* This file contains the word-oriented movement functions */
#include <ctype.h>
#include "config.h"
#include "vi.h"
#ifndef isascii
# define isascii(c) !((c) & ~0x7f)
#endif
MARK m_fword(m, cnt, cmd)
MARK m; /* movement is relative to this mark */
long cnt; /* a numeric argument */
int cmd; /* either 'w' or 'W' */
{
REG long l;
REG char *text;
REG int i;
DEFAULT(1);
l = markline(m);
pfetch(l);
text = ptext + markidx(m);
while (cnt-- > 0) /* yes, ASSIGNMENT! */
{
i = *text++;
if (cmd == 'W')
{
/* include any non-whitespace */
while (i && (!isascii(i) || !isspace(i)))
{
i = *text++;
}
}
else if (!isascii(i) || isalnum(i) || i == '_')
{
/* include an alphanumeric word */
while (i && (!isascii(i) || isalnum(i) || i == '_'))
{
i = *text++;
}
}
else
{
/* include contiguous punctuation */
while (i && isascii(i) && !isalnum(i) && !isspace(i))
{
i = *text++;
}
}
/* include trailing whitespace */
while (!i || isascii(i) && isspace(i))
{
/* did we hit the end of this line? */
if (!i)
{
/* move to next line, if there is one */
l++;
if (l > nlines)
{
return MARK_UNSET;
}
pfetch(l);
text = ptext;
}
i = *text++;
}
text--;
}
/* construct a MARK for this place */
m = buildmark(text);
return m;
}
MARK m_bword(m, cnt, cmd)
MARK m; /* movement is relative to this mark */
long cnt; /* a numeric argument */
int cmd; /* either 'b' or 'B' */
{
REG long l;
REG char *text;
DEFAULT(1);
l = markline(m);
pfetch(l);
text = ptext + markidx(m);
while (cnt-- > 0) /* yes, ASSIGNMENT! */
{
text--;
/* include preceding whitespace */
while (text < ptext || isascii(*text) && isspace(*text))
{
/* did we hit the end of this line? */
if (text < ptext)
{
/* move to preceding line, if there is one */
l--;
if (l <= 0)
{
return MARK_UNSET;
}
pfetch(l);
text = ptext + plen - 1;
}
else
{
text--;
}
}
if (cmd == 'B')
{
/* include any non-whitespace */
while (text >= ptext && (!isascii(*text) || !isspace(*text)))
{
text--;
}
}
else if (!isascii(*text) || isalnum(*text) || *text == '_')
{
/* include an alphanumeric word */
while (text >= ptext && (!isascii(*text) || isalnum(*text) || *text == '_'))
{
text--;
}
}
else
{
/* include contiguous punctuation */
while (text >= ptext && isascii(*text) && !isalnum(*text) && !isspace(*text))
{
text--;
}
}
text++;
}
/* construct a MARK for this place */
m = buildmark(text);
return m;
}
MARK m_eword(m, cnt, cmd)
MARK m; /* movement is relative to this mark */
long cnt; /* a numeric argument */
int cmd; /* either 'e' or 'E' */
{
REG long l;
REG char *text;
REG int i;
DEFAULT(1);
l = markline(m);
pfetch(l);
text = ptext + markidx(m);
while (cnt-- > 0) /* yes, ASSIGNMENT! */
{
text++;
i = *text++;
/* include preceding whitespace */
while (!i || isascii(i) && isspace(i))
{
/* did we hit the end of this line? */
if (!i)
{
/* move to next line, if there is one */
l++;
if (l > nlines)
{
return MARK_UNSET;
}
pfetch(l);
text = ptext;
}
i = *text++;
}
if (cmd == 'E')
{
/* include any non-whitespace */
while (i && (!isascii(i) || !isspace(i)))
{
i = *text++;
}
}
else if (!isascii(i) || isalnum(i) || i == '_')
{
/* include an alphanumeric word */
while (i && (!isascii(i) || isalnum(i) || i == '_'))
{
i = *text++;
}
}
else
{
/* include contiguous punctuation */
while (i && isascii(i) && !isalnum(i) && !isspace(i))
{
i = *text++;
}
}
text -= 2;
}
/* construct a MARK for this place */
m = buildmark(text);
return m;
}
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