mirror of
https://github.com/git/git.git
synced 2024-11-30 21:44:02 +08:00
3d3adaad91
Via trace2, Git can already log interesting config parameters (see the trace2_cmd_list_config() function). However, this can grant an incomplete picture because many config parameters also allow overrides via environment variables. To allow for more complete logs, we add a new trace2_cmd_list_env_vars() function and supporting implementation, modeled after the pre-existing config param logging implementation. Signed-off-by: Josh Steadmon <steadmon@google.com> Acked-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
148 lines
3.3 KiB
C
148 lines
3.3 KiB
C
#include "cache.h"
|
|
#include "config.h"
|
|
#include "trace2/tr2_cfg.h"
|
|
#include "trace2/tr2_sysenv.h"
|
|
|
|
static struct strbuf **tr2_cfg_patterns;
|
|
static int tr2_cfg_count_patterns;
|
|
static int tr2_cfg_loaded;
|
|
|
|
static struct strbuf **tr2_cfg_env_vars;
|
|
static int tr2_cfg_env_vars_count;
|
|
static int tr2_cfg_env_vars_loaded;
|
|
|
|
/*
|
|
* Parse a string containing a comma-delimited list of config keys
|
|
* or wildcard patterns into a list of strbufs.
|
|
*/
|
|
static int tr2_cfg_load_patterns(void)
|
|
{
|
|
struct strbuf **s;
|
|
const char *envvar;
|
|
|
|
if (tr2_cfg_loaded)
|
|
return tr2_cfg_count_patterns;
|
|
tr2_cfg_loaded = 1;
|
|
|
|
envvar = tr2_sysenv_get(TR2_SYSENV_CFG_PARAM);
|
|
if (!envvar || !*envvar)
|
|
return tr2_cfg_count_patterns;
|
|
|
|
tr2_cfg_patterns = strbuf_split_buf(envvar, strlen(envvar), ',', -1);
|
|
for (s = tr2_cfg_patterns; *s; s++) {
|
|
struct strbuf *buf = *s;
|
|
|
|
if (buf->len && buf->buf[buf->len - 1] == ',')
|
|
strbuf_setlen(buf, buf->len - 1);
|
|
strbuf_trim_trailing_newline(*s);
|
|
strbuf_trim(*s);
|
|
}
|
|
|
|
tr2_cfg_count_patterns = s - tr2_cfg_patterns;
|
|
return tr2_cfg_count_patterns;
|
|
}
|
|
|
|
void tr2_cfg_free_patterns(void)
|
|
{
|
|
if (tr2_cfg_patterns)
|
|
strbuf_list_free(tr2_cfg_patterns);
|
|
tr2_cfg_count_patterns = 0;
|
|
tr2_cfg_loaded = 0;
|
|
}
|
|
|
|
/*
|
|
* Parse a string containing a comma-delimited list of environment variable
|
|
* names into a list of strbufs.
|
|
*/
|
|
static int tr2_load_env_vars(void)
|
|
{
|
|
struct strbuf **s;
|
|
const char *varlist;
|
|
|
|
if (tr2_cfg_env_vars_loaded)
|
|
return tr2_cfg_env_vars_count;
|
|
tr2_cfg_env_vars_loaded = 1;
|
|
|
|
varlist = tr2_sysenv_get(TR2_SYSENV_ENV_VARS);
|
|
if (!varlist || !*varlist)
|
|
return tr2_cfg_env_vars_count;
|
|
|
|
tr2_cfg_env_vars = strbuf_split_buf(varlist, strlen(varlist), ',', -1);
|
|
for (s = tr2_cfg_env_vars; *s; s++) {
|
|
struct strbuf *buf = *s;
|
|
|
|
if (buf->len && buf->buf[buf->len - 1] == ',')
|
|
strbuf_setlen(buf, buf->len - 1);
|
|
strbuf_trim_trailing_newline(*s);
|
|
strbuf_trim(*s);
|
|
}
|
|
|
|
tr2_cfg_env_vars_count = s - tr2_cfg_env_vars;
|
|
return tr2_cfg_env_vars_count;
|
|
}
|
|
|
|
void tr2_cfg_free_env_vars(void)
|
|
{
|
|
if (tr2_cfg_env_vars)
|
|
strbuf_list_free(tr2_cfg_env_vars);
|
|
tr2_cfg_env_vars_count = 0;
|
|
tr2_cfg_env_vars_loaded = 0;
|
|
}
|
|
|
|
struct tr2_cfg_data {
|
|
const char *file;
|
|
int line;
|
|
};
|
|
|
|
/*
|
|
* See if the given config key matches any of our patterns of interest.
|
|
*/
|
|
static int tr2_cfg_cb(const char *key, const char *value, void *d)
|
|
{
|
|
struct strbuf **s;
|
|
struct tr2_cfg_data *data = (struct tr2_cfg_data *)d;
|
|
|
|
for (s = tr2_cfg_patterns; *s; s++) {
|
|
struct strbuf *buf = *s;
|
|
int wm = wildmatch(buf->buf, key, WM_CASEFOLD);
|
|
if (wm == WM_MATCH) {
|
|
trace2_def_param_fl(data->file, data->line, key, value);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void tr2_cfg_list_config_fl(const char *file, int line)
|
|
{
|
|
struct tr2_cfg_data data = { file, line };
|
|
|
|
if (tr2_cfg_load_patterns() > 0)
|
|
read_early_config(tr2_cfg_cb, &data);
|
|
}
|
|
|
|
void tr2_list_env_vars_fl(const char *file, int line)
|
|
{
|
|
struct strbuf **s;
|
|
|
|
if (tr2_load_env_vars() <= 0)
|
|
return;
|
|
|
|
for (s = tr2_cfg_env_vars; *s; s++) {
|
|
struct strbuf *buf = *s;
|
|
const char *val = getenv(buf->buf);
|
|
if (val && *val)
|
|
trace2_def_param_fl(file, line, buf->buf, val);
|
|
}
|
|
}
|
|
|
|
void tr2_cfg_set_fl(const char *file, int line, const char *key,
|
|
const char *value)
|
|
{
|
|
struct tr2_cfg_data data = { file, line };
|
|
|
|
if (tr2_cfg_load_patterns() > 0)
|
|
tr2_cfg_cb(key, value, &data);
|
|
}
|