151 lines
2.5 KiB
C
151 lines
2.5 KiB
C
/* move3.c */
|
|
|
|
/* Author:
|
|
* Steve Kirkendall
|
|
* 14407 SW Teal Blvd. #C
|
|
* Beaverton, OR 97005
|
|
* kirkenda@cs.pdx.edu
|
|
*/
|
|
|
|
|
|
/* This file contains movement functions that perform character searches */
|
|
|
|
#ifndef lint
|
|
static char rcsid[] = "$Id: move3.c,v 1.3 1993/08/02 17:53:59 mycroft Exp $";
|
|
#endif /* not lint */
|
|
|
|
|
|
#include "config.h"
|
|
#include "vi.h"
|
|
|
|
#ifndef NO_CHARSEARCH
|
|
static MARK (*prevfwdfn)(); /* function to search in same direction */
|
|
static MARK (*prevrevfn)(); /* function to search in opposite direction */
|
|
static char prev_key; /* sought cvhar from previous [fFtT] */
|
|
|
|
MARK m__ch(m, cnt, cmd)
|
|
MARK m; /* current position */
|
|
long cnt;
|
|
int cmd; /* command: either ',' or ';' */
|
|
{
|
|
MARK (*tmp)();
|
|
|
|
if (!prevfwdfn)
|
|
{
|
|
msg("No previous f, F, t, or T command");
|
|
return MARK_UNSET;
|
|
}
|
|
|
|
if (cmd == ',')
|
|
{
|
|
m = (*prevrevfn)(m, cnt, prev_key);
|
|
|
|
/* Oops! we didn't want to change the prev*fn vars! */
|
|
tmp = prevfwdfn;
|
|
prevfwdfn = prevrevfn;
|
|
prevrevfn = tmp;
|
|
|
|
return m;
|
|
}
|
|
else
|
|
{
|
|
return (*prevfwdfn)(m, cnt, prev_key);
|
|
}
|
|
}
|
|
|
|
/* move forward within this line to next occurrence of key */
|
|
MARK m_fch(m, cnt, key)
|
|
MARK m; /* where to search from */
|
|
long cnt;
|
|
int key; /* what to search for */
|
|
{
|
|
REG char *text;
|
|
|
|
DEFAULT(1);
|
|
|
|
prevfwdfn = m_fch;
|
|
prevrevfn = m_Fch;
|
|
prev_key = key;
|
|
|
|
pfetch(markline(m));
|
|
text = ptext + markidx(m);
|
|
while (cnt-- > 0)
|
|
{
|
|
do
|
|
{
|
|
m++;
|
|
text++;
|
|
} while (*text && *text != key);
|
|
}
|
|
if (!*text)
|
|
{
|
|
return MARK_UNSET;
|
|
}
|
|
return m;
|
|
}
|
|
|
|
/* move backward within this line to previous occurrence of key */
|
|
MARK m_Fch(m, cnt, key)
|
|
MARK m; /* where to search from */
|
|
long cnt;
|
|
int key; /* what to search for */
|
|
{
|
|
REG char *text;
|
|
|
|
DEFAULT(1);
|
|
|
|
prevfwdfn = m_Fch;
|
|
prevrevfn = m_fch;
|
|
prev_key = key;
|
|
|
|
pfetch(markline(m));
|
|
text = ptext + markidx(m);
|
|
while (cnt-- > 0)
|
|
{
|
|
do
|
|
{
|
|
m--;
|
|
text--;
|
|
} while (text >= ptext && *text != key);
|
|
}
|
|
if (text < ptext)
|
|
{
|
|
return MARK_UNSET;
|
|
}
|
|
return m;
|
|
}
|
|
|
|
/* move forward within this line almost to next occurrence of key */
|
|
MARK m_tch(m, cnt, key)
|
|
MARK m; /* where to search from */
|
|
long cnt;
|
|
int key; /* what to search for */
|
|
{
|
|
m = m_fch(m, cnt, key);
|
|
if (m != MARK_UNSET)
|
|
{
|
|
prevfwdfn = m_tch;
|
|
prevrevfn = m_Tch;
|
|
m--;
|
|
}
|
|
return m;
|
|
}
|
|
|
|
/* move backward within this line almost to previous occurrence of key */
|
|
MARK m_Tch(m, cnt, key)
|
|
MARK m; /* where to search from */
|
|
long cnt;
|
|
int key; /* what to search for */
|
|
{
|
|
m = m_Fch(m, cnt, key);
|
|
if (m == MARK_UNSET)
|
|
{
|
|
prevfwdfn = m_Tch;
|
|
prevrevfn = m_tch;
|
|
m++;
|
|
}
|
|
|
|
return m;
|
|
}
|
|
#endif
|