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
100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
#include "builtin.h"
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#include "config.h"
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#include "parse-options.h"
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static char const * const env__helper_usage[] = {
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N_("git env--helper --type=[bool|ulong] <options> <env-var>"),
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NULL
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};
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enum cmdmode {
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ENV_HELPER_TYPE_BOOL = 1,
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ENV_HELPER_TYPE_ULONG
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};
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static int option_parse_type(const struct option *opt, const char *arg,
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int unset)
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{
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enum cmdmode *cmdmode = opt->value;
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BUG_ON_OPT_NEG(unset);
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if (!strcmp(arg, "bool"))
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*cmdmode = ENV_HELPER_TYPE_BOOL;
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else if (!strcmp(arg, "ulong"))
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*cmdmode = ENV_HELPER_TYPE_ULONG;
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else
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die(_("unrecognized --type argument, %s"), arg);
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return 0;
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}
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int cmd_env__helper(int argc, const char **argv, const char *prefix)
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{
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int exit_code = 0;
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const char *env_variable = NULL;
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const char *env_default = NULL;
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int ret;
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int ret_int, default_int;
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unsigned long ret_ulong, default_ulong;
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enum cmdmode cmdmode = 0;
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struct option opts[] = {
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OPT_CALLBACK_F(0, "type", &cmdmode, N_("type"),
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N_("value is given this type"), PARSE_OPT_NONEG,
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option_parse_type),
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OPT_STRING(0, "default", &env_default, N_("value"),
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N_("default for git_env_*(...) to fall back on")),
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OPT_BOOL(0, "exit-code", &exit_code,
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N_("be quiet only use git_env_*() value as exit code")),
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OPT_END(),
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};
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argc = parse_options(argc, argv, prefix, opts, env__helper_usage,
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PARSE_OPT_KEEP_UNKNOWN);
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if (env_default && !*env_default)
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usage_with_options(env__helper_usage, opts);
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if (!cmdmode)
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usage_with_options(env__helper_usage, opts);
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if (argc != 1)
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usage_with_options(env__helper_usage, opts);
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env_variable = argv[0];
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switch (cmdmode) {
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case ENV_HELPER_TYPE_BOOL:
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if (env_default) {
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default_int = git_parse_maybe_bool(env_default);
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if (default_int == -1) {
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error(_("option `--default' expects a boolean value with `--type=bool`, not `%s`"),
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env_default);
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usage_with_options(env__helper_usage, opts);
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}
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} else {
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default_int = 0;
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}
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ret_int = git_env_bool(env_variable, default_int);
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if (!exit_code)
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puts(ret_int ? "true" : "false");
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ret = ret_int;
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break;
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case ENV_HELPER_TYPE_ULONG:
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if (env_default) {
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if (!git_parse_ulong(env_default, &default_ulong)) {
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error(_("option `--default' expects an unsigned long value with `--type=ulong`, not `%s`"),
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env_default);
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usage_with_options(env__helper_usage, opts);
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}
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} else {
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default_ulong = 0;
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}
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ret_ulong = git_env_ulong(env_variable, default_ulong);
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if (!exit_code)
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printf("%lu\n", ret_ulong);
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ret = ret_ulong;
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break;
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default:
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BUG("unknown <type> value");
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break;
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}
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return !ret;
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}
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