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/*
Unix clm/cocl interface
Ronny Wichers Schreur
*/
# include <stdio.h>
# include <stdlib.h>
# include <stdarg.h>
# include <strings.h>
/*
Clean string
============
*/
#ifdef _WIN64
typedef struct clean_string {__int64 length; char chars [1]; } *CleanString;
#else
typedef struct clean_string {long length; char chars [1]; } *CleanString;
#endif
# define Clean(ignore)
# include "ipc.h"
static void
log (char *format, ...)
{
#ifdef DEBUG
va_list ap;
va_start (ap, format);
(void) fputs(" cocl: ", stderr);
(void) vfprintf(stderr, format, ap);
va_end(ap);
#else /* ifndef DEBUG */
#endif
}
static char *
ConvertCleanString (CleanString string)
{
int length;
char *copy;
length = string->length;
copy = malloc (length+1);
strncpy (copy, string->chars, length);
copy [length] = '\0';
return (copy);
} /* ConvertCleanString */
static FILE *commands, *results;
static char *command_buffer_p=NULL;
static int command_buffer_size=0;
static void
crash (void)
{
int *p;
p = NULL;
log ("crashing\n");
*p = 0;
} /* crash */
static void
hang (void)
{
log ("hanging\n");
for (;;)
;
} /* hang */
int open_pipes (CleanString commands_clean, CleanString results_clean)
{
char *commands_name, *results_name;
commands_name = ConvertCleanString (commands_clean);
results_name = ConvertCleanString (results_clean);
if ((commands = fopen(commands_name, "r")) == NULL)
{
log("commands = %s\n",commands_name);
perror("fopen commands");
return -1;
}
if ((results = fopen(results_name, "w")) == NULL)
{
log("results = %s\n",results_name);
perror("fopen results");
return -1;
}
return 0;
}
int get_command_length (void)
{
log ("reading command\n");
if (command_buffer_p==NULL){
command_buffer_p = malloc (1024);
if (command_buffer_p==NULL)
return -1;
command_buffer_size=1024;
}
{
int n_chars,max_n_chars,c;
n_chars=0;
max_n_chars=command_buffer_size-1;
do {
c=fgetc (commands);
if (c==EOF)
break;
command_buffer_p[n_chars++]=c;
if (n_chars==max_n_chars){
char *new_command_buffer_p;
new_command_buffer_p = realloc (command_buffer_p,command_buffer_size<<1);
if (new_command_buffer_p==NULL){
command_buffer_p[n_chars-1]='\0';
return -1;
}
command_buffer_p=new_command_buffer_p;
command_buffer_size=command_buffer_size<<1;
max_n_chars=command_buffer_size-1;
}
} while (c!='\n');
command_buffer_p[n_chars]='\0';
log ("command = %s", command_buffer_p);
return n_chars;
}
}
int get_command (CleanString cleanString)
{
log ("%s\n", command_buffer_p);
strncpy (cleanString->chars, command_buffer_p, cleanString->length);
return (0);
}
int send_result (int result)
{
int r;
if (fprintf (results, "%d\n", result) > 0)
r=0;
else
r=-1;
fflush (results);
return r;
}
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