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#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "util.h"
#if !DEBUG
void die(const char* format, ...) {
#else
void _die(int line, const char* file, const char* format, ...) {
fprintf(stderr, "%s:%d: error: ", file, line);
#endif
va_list args;
va_start(args, format);
vfprintf(stderr, format, args);
va_end(args);
fprintf(stderr, "\n");
exit(1);
}
#if !DEBUG
void* emalloc(size_t size, char* alloc_reason) {
void* d = malloc(size);
if (d == NULL) die("failed to allocate '%s': %s", alloc_reason, strerror(errno));
return d;
}
#else
void* _emalloc(int line, const char* file, size_t size, char* alloc_reason) {
void* d = malloc(size);
if (d == NULL) _die(line, file, "failed to allocate '%s': %s", alloc_reason, strerror(errno));
return d;
}
#endif
void printout(const char* format, ...) {
va_list args;
va_start(args, format);
vfprintf(stdout, format, args);
va_end(args);
}
void print(const char* format, ...) {
va_list args;
va_start(args, format);
vfprintf(stderr, format, args);
va_end(args);
}
char* vastrcat_(int dummy, ...) {
va_list args;
va_list args2;
va_start(args, dummy);
va_copy(args2, args);
// get len of output string
size_t len = 0;
char* arg = NULL;
while ((arg = va_arg(args, char*))) {
len += strlen(arg);
}
va_end(args);
// allocate and build output
char* output = malloc(len + 1);
if (!output) return NULL;
char* p = output;
while ((arg = va_arg(args2, char*))) {
size_t alen = strlen(arg);
memcpy(p, arg, alen);
p += alen;
}
output[len] = '\0';
va_end(args2);
return output;
}
char* join_path_(int dummy, ...) {
va_list args;
va_list args2;
va_start(args, dummy);
va_copy(args2, args);
// note(jqj): some path joining libraries reset if they encounter an
// absolute path, we could implement that easily, but I'm not
// sure about it
// get len of output path
size_t len = 0;
char* arg = NULL;
int i = 0;
while ((arg = va_arg(args, char*))) {
if (i > 0) len += 1;
len += strlen(arg) + 1;
++i;
}
va_end(args);
// allocate and build output
char* output = malloc(len + 1);
if (!output) return NULL;
char* p = output;
while ((arg = va_arg(args2, char*))) {
if (p != output) {
// add slash before every part except the first
*p = '/';
++p;
}
size_t alen = strlen(arg);
memcpy(p, arg, alen);
p += alen;
}
output[len] = '\0';
va_end(args2);
return output;
}
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