f4609b896f
This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because there is some breakage in the git build related to the netrc credentials helper which someone has taken care of in nixpkgs. The stable channel is not used for anything other than git, so this should be fine. Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb
147 lines
3.3 KiB
C
147 lines
3.3 KiB
C
#include "cache.h"
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#include "config.h"
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#include "trace2/tr2_cfg.h"
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#include "trace2/tr2_sysenv.h"
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static struct strbuf **tr2_cfg_patterns;
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static int tr2_cfg_count_patterns;
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static int tr2_cfg_loaded;
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static struct strbuf **tr2_cfg_env_vars;
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static int tr2_cfg_env_vars_count;
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static int tr2_cfg_env_vars_loaded;
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/*
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* Parse a string containing a comma-delimited list of config keys
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* or wildcard patterns into a list of strbufs.
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*/
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static int tr2_cfg_load_patterns(void)
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{
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struct strbuf **s;
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const char *envvar;
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if (tr2_cfg_loaded)
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return tr2_cfg_count_patterns;
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tr2_cfg_loaded = 1;
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envvar = tr2_sysenv_get(TR2_SYSENV_CFG_PARAM);
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if (!envvar || !*envvar)
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return tr2_cfg_count_patterns;
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tr2_cfg_patterns = strbuf_split_buf(envvar, strlen(envvar), ',', -1);
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for (s = tr2_cfg_patterns; *s; s++) {
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struct strbuf *buf = *s;
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if (buf->len && buf->buf[buf->len - 1] == ',')
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strbuf_setlen(buf, buf->len - 1);
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strbuf_trim_trailing_newline(*s);
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strbuf_trim(*s);
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}
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tr2_cfg_count_patterns = s - tr2_cfg_patterns;
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return tr2_cfg_count_patterns;
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}
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void tr2_cfg_free_patterns(void)
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{
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if (tr2_cfg_patterns)
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strbuf_list_free(tr2_cfg_patterns);
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tr2_cfg_count_patterns = 0;
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tr2_cfg_loaded = 0;
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}
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/*
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* Parse a string containing a comma-delimited list of environment variable
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* names into a list of strbufs.
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*/
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static int tr2_load_env_vars(void)
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{
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struct strbuf **s;
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const char *varlist;
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if (tr2_cfg_env_vars_loaded)
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return tr2_cfg_env_vars_count;
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tr2_cfg_env_vars_loaded = 1;
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varlist = tr2_sysenv_get(TR2_SYSENV_ENV_VARS);
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if (!varlist || !*varlist)
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return tr2_cfg_env_vars_count;
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tr2_cfg_env_vars = strbuf_split_buf(varlist, strlen(varlist), ',', -1);
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for (s = tr2_cfg_env_vars; *s; s++) {
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struct strbuf *buf = *s;
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if (buf->len && buf->buf[buf->len - 1] == ',')
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strbuf_setlen(buf, buf->len - 1);
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strbuf_trim_trailing_newline(*s);
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strbuf_trim(*s);
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}
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tr2_cfg_env_vars_count = s - tr2_cfg_env_vars;
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return tr2_cfg_env_vars_count;
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}
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void tr2_cfg_free_env_vars(void)
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{
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if (tr2_cfg_env_vars)
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strbuf_list_free(tr2_cfg_env_vars);
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tr2_cfg_env_vars_count = 0;
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tr2_cfg_env_vars_loaded = 0;
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}
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struct tr2_cfg_data {
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const char *file;
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int line;
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};
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/*
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* See if the given config key matches any of our patterns of interest.
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*/
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static int tr2_cfg_cb(const char *key, const char *value, void *d)
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{
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struct strbuf **s;
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struct tr2_cfg_data *data = (struct tr2_cfg_data *)d;
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for (s = tr2_cfg_patterns; *s; s++) {
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struct strbuf *buf = *s;
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int wm = wildmatch(buf->buf, key, WM_CASEFOLD);
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if (wm == WM_MATCH) {
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trace2_def_param_fl(data->file, data->line, key, value);
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return 0;
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}
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}
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return 0;
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}
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void tr2_cfg_list_config_fl(const char *file, int line)
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{
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struct tr2_cfg_data data = { file, line };
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if (tr2_cfg_load_patterns() > 0)
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read_early_config(tr2_cfg_cb, &data);
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}
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void tr2_list_env_vars_fl(const char *file, int line)
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{
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struct strbuf **s;
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if (tr2_load_env_vars() <= 0)
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return;
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for (s = tr2_cfg_env_vars; *s; s++) {
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struct strbuf *buf = *s;
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const char *val = getenv(buf->buf);
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if (val && *val)
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trace2_def_param_fl(file, line, buf->buf, val);
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}
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}
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void tr2_cfg_set_fl(const char *file, int line, const char *key,
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const char *value)
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{
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struct tr2_cfg_data data = { file, line };
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if (tr2_cfg_load_patterns() > 0)
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tr2_cfg_cb(key, value, &data);
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}
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