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ini_file_readers can refer env variable as %{env::XXX}

pull/56/merge
YuQing 2026-07-10 19:45:08 +08:00
parent 3cca66ac15
commit 4f87de79ec
3 changed files with 28 additions and 8 deletions
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3
HISTORY
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@ -1,4 +1,7 @@
Version 1.87 2026-07-10
* ini_file_readers can refer env variable such as %{env::FASTDFS_IPADDR}
Version 1.86 2026-06-26
* add function fc_parse_version
* change return type of format_ip_address and format_ip_port

3
doc/ini_file_reader-Chinese.md
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@ -37,7 +37,8 @@ libfastcommon是在github开源的⼀个C函数库。它提供了ini⽂件解析
[index]表示获取指定序号的本机IP，0表示获取第一个IP，-1表示获取最后一个IP，
例如：[0]、inner[-1], outer[1]等等
II. SHELL_EXEC 获取命令⾏输出，执行的command为配置项
III. REPLACE_VARS 替换配置项中%{VARIABLE}格式的变量，变量由#@set指令设置
III. REPLACE_VARS 替换配置项中%{VARIABLE}格式的变量，普通变量由#@set指令设置。
可以引用环境变量，格式为 %{env::VARIABLE}，例如 %{env::FASTDFS_IPADDR}
```
```

30
src/ini_file_reader.c
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@ -299,6 +299,11 @@ static char *doReplaceVars(IniContext *pContext, const char *param,
{
#define VARIABLE_TAG_MIN_LENGTH 4 //%{v}
#define ENV_VAR_NAME_STARTWITH_STR "env::"
#define ENV_VAR_NAME_STARTWITH_LEN (sizeof(ENV_VAR_NAME_STARTWITH_STR) - 1)
#define ENV_VARIABLE_MARK_STR "%{"ENV_VAR_NAME_STARTWITH_STR
SetDirectiveVars *set;
const char *p;
const char *e;
@ -319,11 +324,13 @@ static char *doReplaceVars(IniContext *pContext, const char *param,
set = iniGetVars(pContext);
if (set == NULL || set->vars == NULL) {
logWarning("file: "__FILE__", line: %d, "
"NO set directives before, set value to %s",
__LINE__, param);
fc_strlcpy(output, param, FAST_INI_ITEM_VALUE_SIZE);
return output;
if (strstr(param, ENV_VARIABLE_MARK_STR) == NULL) {
logWarning("file: "__FILE__", line: %d, "
"NO set directives before, set value to %s",
__LINE__, param);
fc_strlcpy(output, param, FAST_INI_ITEM_VALUE_SIZE);
return output;
}
}
pEnd = param + strlen(param);
@ -354,8 +361,17 @@ static char *doReplaceVars(IniContext *pContext, const char *param,
*(name + name_len) = '\0';
fc_trim(name);
name_len = strlen(name);
if (name_len > 0) {
value = (char *)fc_hash_find(set->vars, name, name_len);
if (name_len > ENV_VAR_NAME_STARTWITH_LEN &&
memcmp(name, ENV_VAR_NAME_STARTWITH_STR,
ENV_VAR_NAME_STARTWITH_LEN) == 0)
{
value = getenv(name + ENV_VAR_NAME_STARTWITH_LEN);
} else if (name_len > 0) {
if (set != NULL && set->vars != NULL) {
value = (char *)fc_hash_find(set->vars, name, name_len);
} else {
value = NULL;
}
} else {
value = NULL;
}