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#include "common.h"
struct Target *target_new() {
struct Target *t = calloc(1, sizeof(struct Target));
return t;
}
struct Target *target_clone(const struct Target *src) {
struct Target *t = target_new();
if (!t) {
fprintf(stderr, "unable to allocate memory to clone target\n");
return NULL;
}
t->id = src->id ? strdup(src->id) : NULL;
t->_tmp_deps = src->_tmp_deps ? strdup(src->_tmp_deps) : NULL;
t->script = src->script ? strdup(src->script) : NULL;
t->info.line = src->info.line ? strdup(src->info.line) : NULL;
t->info.filename = src->info.filename ? strdup(src->info.filename) : NULL;
if (src->dependencies && src->dependencies->count_used) {
t->dependencies = target_list_new(src->dependencies->count_alloc);
if (!t->dependencies) {
fprintf(stderr, "unable to allocate memory to clone target dependencies\n");
return NULL;
}
for (size_t i = 0; i < src->dependencies->count_used; i++) {
struct Target *src_target = src->dependencies->targets[i];
target_list_add(t->dependencies, src_target);
}
}
return t;
}
char *target_create_script_file(struct Target *t) {
char template[] = TARGET_SCRIPT_FILENAME_TEMPLATE;
if (mkstemps(template, 0) < 0) {
perror("mkstemps");
return NULL;
}
return strdup(template);
}
int target_run_all(struct Target *t, size_t *depth) {
int fail = 0;
*depth += 1;
if (*depth > TARGET_RUN_MAX_DEPTH) {
fprintf(stderr, "maximum recursion depth reached: %d\n", TARGET_RUN_MAX_DEPTH);
if (t) {
fprintf(stderr, "%s: line %lu: %s\n", t->info.filename ? t->info.filename : "???", t->info.line_no, t->info.line);
}
*depth -= 1;
return -1;
}
if (t && t->dependencies) {
for (size_t i = 0; i < t->dependencies->count_used; i++) {
struct Target *d = t->dependencies->targets[i];
if (target_run_all(d, depth)) {
fail = 1;
*depth -= 1;
break;
}
}
}
if (!fail) {
*depth -= 1;
return target_run(t, depth);
}
*depth -= 1;
return -1;
}
int target_run(struct Target *t, const size_t *depth) {
if (!t || *depth > 100) {
return -1;
}
char *filename = target_create_script_file(t);
if (!filename) {
fprintf(stderr, "failed to create target script\n");
return -1;
}
if (chmod(filename, 0750) < 0) {
perror("chmod");
safe_free(filename);
return -1;
}
FILE *fp = fopen(filename, "w+");
if (!fp) {
perror("unable to open target script for writing");
remove(filename);
safe_free(filename);
return -1;
}
fprintf(fp, "%s", t->script ? t->script : "");
fclose(fp);
char *cmd = NULL;
if (asprintf(&cmd, "bash %s", filename) < 0) {
perror("asprintf");
remove(filename);
safe_free(filename);
return -1;
}
printf("==> Running target %s\n", t->id);
const int status = system(cmd);
remove(filename);
safe_free(cmd);
safe_free(filename);
return status;
}
void target_free(struct Target **target) {
safe_free((*target)->id);
safe_free((*target)->_tmp_deps);
safe_free((*target)->script);
safe_free((*target)->info.line);
safe_free((*target)->info.filename);
if ((*target)->dependencies) {
// Dependencies are shared between lists. Do not wipe out the targets _here_.
safe_free((*target)->dependencies->targets);
safe_free((*target)->dependencies);
}
safe_free((*target));
}
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