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termim-next.c
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termim-next.c
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/*
* Copyright (c) 2011 Kuan-Chung Chiu <buganini@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#define ARRAY_SIZE 32
int main(int argc, char **argv){
char buf[64];
char *imlist[ARRAY_SIZE];
char *eargv[ARRAY_SIZE];
char *termim_i=getenv("TERMIM_I");
char *termim_im=getenv("TERMIM_IM");
char *t, *im, *arg;
int i;
int n=0;
if(termim_im==NULL){
return 1;
}
termim_im=strdup(termim_im);
t=termim_im;
while((im=strsep(&t, ":"))!=NULL){
if(n==ARRAY_SIZE)
break;
imlist[n]=im;
n+=1;
}
if(n==0)
return 1;
if(termim_i==NULL){
i=0;
}else{
i=strtol(termim_i, NULL, 10);
i=(i+1)%n;
}
sprintf(buf, "%d", i);
setenv("TERMIM_I", buf, 1);
im=strdup(imlist[i]);
i=0;
t=im;
while((arg=strsep(&t, " "))!=NULL){
if(i==ARRAY_SIZE)
break;
eargv[i]=arg;
i+=1;
}
eargv[i]=NULL;
execvp(eargv[0], eargv);
return errno;
}