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