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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
/*
* A simple filter for the templates
*/
int main(int argc, char *argv[])
{
char buf[1024];
char *vec[8192];
char *fvec[200];
char **svec;
char type[64];
int i;
int vp=2;
int ret=0;
pid_t pid;
if(chdir(getenv("TOPDIR")))
{
perror("chdir");
exit(1);
}
/*
* Build the exec array ahead of time.
*/
vec[0]="kernel-doc";
vec[1]="-docbook";
for(i=1;vp<8189;i++)
{
if(argv[i]==NULL)
break;
vec[vp++]=type;
vec[vp++]=argv[i];
}
vec[vp++]=buf+2;
vec[vp++]=NULL;
/*
* Now process the template
*/
while(fgets(buf, 1024, stdin))
{
if(*buf!='!') {
printf("%s", buf);
continue;
}
fflush(stdout);
svec = vec;
if(buf[1]=='E')
strcpy(type, "-function");
else if(buf[1]=='I')
strcpy(type, "-nofunction");
else if(buf[1]=='F') {
int snarf = 0;
fvec[0] = "kernel-doc";
fvec[1] = "-docbook";
strcpy (type, "-function");
vp = 2;
for (i = 2; buf[i]; i++) {
if (buf[i] == ' ' || buf[i] == '\n') {
buf[i] = '\0';
snarf = 1;
continue;
}
if (snarf) {
snarf = 0;
fvec[vp++] = type;
fvec[vp++] = &buf[i];
}
}
fvec[vp++] = &buf[2];
fvec[vp] = NULL;
svec = fvec;
} else
{
fprintf(stderr, "Unknown ! escape.\n");
exit(1);
}
switch(pid=fork())
{
case -1:
perror("fork");
exit(1);
case 0:
execvp("scripts/kernel-doc", svec);
perror("exec scripts/kernel-doc");
exit(1);
default:
waitpid(pid, &ret ,0);
}
}
exit(ret);
}
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