#include "cache.h"
#include "quote.h"
-/* Get a trace file descriptor from GIT_TRACE env variable. */
-static int get_trace_fd(int *need_close)
+/* Get a trace file descriptor from "key" env variable. */
+static int get_trace_fd(const char *key, int *need_close)
{
- char *trace = getenv("GIT_TRACE");
+ char *trace = getenv(key);
if (!trace || !strcmp(trace, "") ||
!strcmp(trace, "0") || !strcasecmp(trace, "false"))
return fd;
}
- fprintf(stderr, "What does '%s' for GIT_TRACE mean?\n", trace);
+ fprintf(stderr, "What does '%s' for %s mean?\n", trace, key);
fprintf(stderr, "If you want to trace into a file, "
- "then please set GIT_TRACE to an absolute pathname "
- "(starting with /).\n");
+ "then please set %s to an absolute pathname "
+ "(starting with /).\n", key);
fprintf(stderr, "Defaulting to tracing on stderr...\n");
return STDERR_FILENO;
static const char err_msg[] = "Could not trace into fd given by "
"GIT_TRACE environment variable";
-void trace_printf(const char *fmt, ...)
+static void trace_vprintf(const char *key, const char *fmt, va_list ap)
{
- struct strbuf buf;
- va_list ap;
- int fd, len, need_close = 0;
+ struct strbuf buf = STRBUF_INIT;
- fd = get_trace_fd(&need_close);
- if (!fd)
+ if (!trace_want(key))
return;
- strbuf_init(&buf, 64);
+ set_try_to_free_routine(NULL); /* is never reset */
+ strbuf_vaddf(&buf, fmt, ap);
+ trace_strbuf(key, &buf);
+ strbuf_release(&buf);
+}
+
+static void trace_printf_key(const char *key, const char *fmt, ...)
+{
+ va_list ap;
va_start(ap, fmt);
- len = vsnprintf(buf.buf, strbuf_avail(&buf), fmt, ap);
+ trace_vprintf(key, fmt, ap);
va_end(ap);
- if (len >= strbuf_avail(&buf)) {
- strbuf_grow(&buf, len - strbuf_avail(&buf) + 128);
- va_start(ap, fmt);
- len = vsnprintf(buf.buf, strbuf_avail(&buf), fmt, ap);
- va_end(ap);
- if (len >= strbuf_avail(&buf))
- die("broken vsnprintf");
- }
- strbuf_setlen(&buf, len);
+}
- write_or_whine_pipe(fd, buf.buf, buf.len, err_msg);
- strbuf_release(&buf);
+void trace_printf(const char *fmt, ...)
+{
+ va_list ap;
+ va_start(ap, fmt);
+ trace_vprintf("GIT_TRACE", fmt, ap);
+ va_end(ap);
+}
+
+void trace_strbuf(const char *key, const struct strbuf *buf)
+{
+ int fd, need_close = 0;
+
+ fd = get_trace_fd(key, &need_close);
+ if (!fd)
+ return;
+
+ write_or_whine_pipe(fd, buf->buf, buf->len, err_msg);
if (need_close)
close(fd);
void trace_argv_printf(const char **argv, const char *fmt, ...)
{
- struct strbuf buf;
+ struct strbuf buf = STRBUF_INIT;
va_list ap;
- int fd, len, need_close = 0;
+ int fd, need_close = 0;
- fd = get_trace_fd(&need_close);
+ fd = get_trace_fd("GIT_TRACE", &need_close);
if (!fd)
return;
- strbuf_init(&buf, 64);
+ set_try_to_free_routine(NULL); /* is never reset */
va_start(ap, fmt);
- len = vsnprintf(buf.buf, strbuf_avail(&buf), fmt, ap);
+ strbuf_vaddf(&buf, fmt, ap);
va_end(ap);
- if (len >= strbuf_avail(&buf)) {
- strbuf_grow(&buf, len - strbuf_avail(&buf) + 128);
- va_start(ap, fmt);
- len = vsnprintf(buf.buf, strbuf_avail(&buf), fmt, ap);
- va_end(ap);
- if (len >= strbuf_avail(&buf))
- die("broken vsnprintf");
- }
- strbuf_setlen(&buf, len);
sq_quote_argv(&buf, argv, 0);
strbuf_addch(&buf, '\n');
if (need_close)
close(fd);
}
+
+static const char *quote_crnl(const char *path)
+{
+ static char new_path[PATH_MAX];
+ const char *p2 = path;
+ char *p1 = new_path;
+
+ if (!path)
+ return NULL;
+
+ while (*p2) {
+ switch (*p2) {
+ case '\\': *p1++ = '\\'; *p1++ = '\\'; break;
+ case '\n': *p1++ = '\\'; *p1++ = 'n'; break;
+ case '\r': *p1++ = '\\'; *p1++ = 'r'; break;
+ default:
+ *p1++ = *p2;
+ }
+ p2++;
+ }
+ *p1 = '\0';
+ return new_path;
+}
+
+/* FIXME: move prefix to startup_info struct and get rid of this arg */
+void trace_repo_setup(const char *prefix)
+{
+ static const char *key = "GIT_TRACE_SETUP";
+ const char *git_work_tree;
+ char cwd[PATH_MAX];
+
+ if (!trace_want(key))
+ return;
+
+ if (!getcwd(cwd, PATH_MAX))
+ die("Unable to get current working directory");
+
+ if (!(git_work_tree = get_git_work_tree()))
+ git_work_tree = "(null)";
+
+ if (!prefix)
+ prefix = "(null)";
+
+ trace_printf_key(key, "setup: git_dir: %s\n", quote_crnl(get_git_dir()));
+ trace_printf_key(key, "setup: worktree: %s\n", quote_crnl(git_work_tree));
+ trace_printf_key(key, "setup: cwd: %s\n", quote_crnl(cwd));
+ trace_printf_key(key, "setup: prefix: %s\n", quote_crnl(prefix));
+}
+
+int trace_want(const char *key)
+{
+ const char *trace = getenv(key);
+
+ if (!trace || !strcmp(trace, "") ||
+ !strcmp(trace, "0") || !strcasecmp(trace, "false"))
+ return 0;
+ return 1;
+}