plan9fox/libpanel/snarf.c
xfnw 856abd2f7d Squashed 'sys/src/cmd/gopher/' content from commit 3680728b6
git-subtree-dir: sys/src/cmd/gopher
git-subtree-split: 3680728b631ed65201b397f4ae3e5d1b03be42f9
2022-07-01 15:46:23 -04:00

58 lines
804 B
C

#include <u.h>
#include <libc.h>
#include <draw.h>
#include <event.h>
#include <panel.h>
#include "pldefs.h"
void plputsnarf(char *s){
int fd;
if(s==0 || *s=='\0')
return;
if((fd=open("/dev/snarf", OWRITE|OTRUNC))>=0){
write(fd, s, strlen(s));
close(fd);
}
}
char *plgetsnarf(void){
int fd, n, r;
char *s;
if((fd=open("/dev/snarf", OREAD))<0)
return nil;
n=0;
s=nil;
for(;;){
s=pl_erealloc(s, n+1024);
if((r = read(fd, s+n, 1024)) <= 0)
break;
n += r;
}
close(fd);
if(n <= 0){
free(s);
return nil;
}
s[n] = '\0';
return s;
}
void plsnarf(Panel *p){
char *s;
if(p==0 || p->snarf==0)
return;
s=p->snarf(p);
plputsnarf(s);
free(s);
}
void plpaste(Panel *p){
char *s;
if(p==0 || p->paste==0)
return;
if(s=plgetsnarf()){
p->paste(p, s);
free(s);
}
}