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#include <gu/defs.h>
#include <gu/log.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
static int gu_log_depth = 0;
static bool
gu_log_match(const char* pat, size_t patlen, const char* str)
{
if (patlen > 0 && pat[patlen-1] == '*') {
return strncmp(pat, str, patlen-1) == 0;
} else if (strlen(str) == patlen) {
return strncmp(pat, str, patlen) == 0;
}
return false;
}
static bool
gu_log_enabled(const char* func, const char* file)
{
const char* cfg = getenv("GU_LOG");
if (cfg == NULL) {
return false;
}
const char* p = cfg;
while (true) {
size_t len = strcspn(p, ",");
if (gu_log_match(p, len, func)) {
return true;
}
if (gu_log_match(p, len, file)) {
return true;
}
if (p[len] == '\0') {
break;
}
p = &p[len + 1];
}
return false;
}
void
gu_log_full_v(GuLogKind kind, const char* func, const char* file, int line,
const char* fmt, va_list args)
{
(void) (kind && line);
if (!gu_log_enabled(func, file)) {
return;
}
if (kind == GU_LOG_KIND_EXIT) {
gu_log_depth--;
}
if (fmt) {
int indent = gu_min(32 + gu_log_depth, 48);
fprintf(stderr, "%-*s: ", indent, func);
vfprintf(stderr, fmt, args);
fputc('\n', stderr);
fflush(stderr);
}
if (kind == GU_LOG_KIND_ENTER) {
gu_log_depth++;
}
}
void
gu_log_full(GuLogKind kind, const char* func, const char* file, int line,
const char* fmt, ...)
{
va_list args;
va_start(args, fmt);
gu_log_full_v(kind, func, file, line, fmt, args);
va_end(args);
}
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