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git/trace2/tr2_cfg.c

147 lines
3.3 KiB

#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);
}