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/* redo.c
*
* Copyright (c) 2014 Tharre
*
* This software may be modified and distributed under the terms
* of the MIT license. See the LICENSE file for details.
*/
#define _XOPEN_SOURCE 600
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <time.h>
#include <limits.h>
#include <unistd.h>
#include "build.h"
#include "util.h"
#include "dbg.h"
#include "filepath.h"
/* Returns the amount of digits a number n has in decimal. */
static inline unsigned digits(unsigned n) {
return n ? 1 + digits(n/10) : n;
}
void prepare_env() {
/* create the dependency store if it doesn't already exist */
if (mkdirp(".redo") && mkdirp(".redo/deps"))
fprintf(stderr, "redo: creating dependency store ...\n");
/* set REDO_ROOT */
char *cwd = getcwd(NULL, 0);
if (!cwd)
diem("redo: failed to obtain cwd");
if (setenv("REDO_ROOT", cwd, 0))
diem("redo: failed to setenv REDO_ROOT to %s", cwd);
free(cwd);
/* set REDO_MAGIC */
srand(time(NULL));
char magic_str[digits(UINT_MAX) + 1];
sprintf(magic_str, "%u", rand());
if (setenv("REDO_MAGIC", magic_str, 0))
diem("redo: failed to setenv() REDO_MAGIC to %s", magic_str);
}
int main(int argc, char *argv[]) {
prepare_env();
if (argc < 2) {
update_target("all", 'a');
} else {
int i;
for (i = 1; i < argc; ++i) {
update_target(argv[i], 'a');
}
}
}
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