CSY/reowolf Files · examples/utility.c · Centrum Wiskunde & Informatica (CWI)

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Merge branch 'feat-api-cmds-and-branching'

Implements the programmer-facing API to allow programmatic
specification of a synchronous round. The way in which these put/get
interactions are performed is in an initial shape. Perhaps this will
change in the future.

The second main set of changes is the addion of a 'fork' statement,
which allows explicit forking, and allowing multiple puts/gets over the
same transport link within a single sync round.

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include "../reowolf.h"

size_t get_user_msg(char * buf, size_t cap) {
	memset(buf, 0, cap);
	printf("Insert a msg of max len %zu: ", cap);
	fgets(buf, cap, stdin);
	for(size_t len = 0; len<cap; len++)
		if(buf[len]==0 || buf[len]=='\n')
			return len;
	return cap;
}
void rw_err_peek(Connector * c) {
	printf("Error str `%s`\n", reowolf_error_peek(NULL));
}

// allocates a buffer!
char * buffer_pdl(char * filename) {
	FILE *f = fopen(filename, "rb");
	if (f == NULL) {
		printf("Opening pdl file returned errno %d!\n", errno);
		exit(1);
	}
	fseek(f, 0, SEEK_END);
	long fsize = ftell(f);
	fseek(f, 0, SEEK_SET);
	char *pdl = malloc(fsize + 1);
	fread(pdl, 1, fsize, f);
	fclose(f);
	pdl[fsize] = 0;
	return pdl;
}