File: [local] / OpenXM_contrib2 / windows / asir32gui / history.c (download)
Revision 1.1.1.1 (vendor branch), Wed Nov 22 06:14:29 2000 UTC (23 years, 10 months ago) by noro
Branch: NORO, MAIN
CVS Tags: R_1_3_1-2, RELEASE_1_3_1_13b, RELEASE_1_2_3_12, RELEASE_1_2_3, RELEASE_1_2_2_KNOPPIX_b, RELEASE_1_2_2_KNOPPIX, RELEASE_1_2_2, RELEASE_1_2_1, KNOPPIX_2006, HEAD, DEB_REL_1_2_3-9, ASIR32GUI Changes since 1.1: +0 -0
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ASIRGUI source. Sorry, it contains Japanese characters.
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#include <stdio.h>
#include <string.h>
#include <malloc.h>
char *prev_hist(void), *next_hist(void), *search_hist(char *p);
void write_hist(char *fname), read_hist(char *fname);
void add_hist(char *p), init_hist(int max);
void reset_traverse(void);
static char **hist_table;
static int hist_full, hist_current, hist_length;
static int hist_traverse, hist_traverse_index;
#define CURRENT (hist_table[hist_current])
void init_hist(int max)
{
hist_length = max;
hist_table = (char **)calloc(hist_length,sizeof(char *));
hist_full = 0;
hist_current = -1;
}
void reset_traverse(void)
{
hist_traverse = 0;
}
void add_hist(char *p)
{
if ( hist_current >= 0 && CURRENT && !strcmp(p,CURRENT) )
return;
hist_current++;
if ( hist_current == hist_length ) {
hist_current = 0;
hist_full = 1;
}
CURRENT = (char *)realloc(CURRENT,strlen(p)+1);
strcpy(CURRENT,p);
}
char *search_hist(char *p)
{
int len,slen,index,i;
if ( *p == '!' ) {
if ( hist_current < 0 )
return 0;
else
return CURRENT;
}
slen = strlen(p);
len = hist_full ? hist_length : hist_current+1;
index = hist_current;
for ( i = len; i; i--, index-- ) {
if ( index < 0 )
index += hist_length;
if ( !strncmp(p,hist_table[index],slen) )
return hist_table[index];
}
return 0;
}
void read_hist(char *fname)
{
int l;
char buf[BUFSIZ];
FILE *fp;
if ( !(fp = fopen(fname,"rb")) )
return;
while ( fgets(buf,BUFSIZ-1,fp) ) {
l = strlen(buf);
if ( buf[l-1] == '\n' )
buf[l-1] = 0;
add_hist(buf);
}
fclose(fp);
}
void write_hist(char *fname)
{
int len,index,i;
FILE *fp;
if ( !(fp = fopen(fname,"wb")) )
return;
len = hist_full ? hist_length : hist_current+1;
index = hist_full ? hist_current+1 : 0;
for ( i = 0; i < len; i++, index++ ) {
if ( index >= hist_length )
index -= hist_length;
fprintf(fp,"%s\n",hist_table[index]);
}
fclose(fp);
}
char *next_hist(void) {
if ( !hist_traverse || hist_traverse_index == hist_current )
return 0;
else {
hist_traverse_index = (hist_traverse_index+1) % hist_length;
return hist_table[hist_traverse_index];
}
}
char *prev_hist(void) {
if ( !hist_traverse ) {
if ( hist_current >= 0 ) {
hist_traverse = 1;
hist_traverse_index = hist_current;
return hist_table[hist_traverse_index];
} else
return 0;
} else {
hist_traverse_index--;
if ( hist_traverse_index < 0 )
if ( hist_full )
hist_traverse_index += hist_length;
else
hist_traverse_index = 0;
return hist_table[hist_traverse_index];
}
}