From aed022ab4ca1055e1c962b73e14dbf41380f84a9 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Thu, 14 Jul 2005 18:55:09 -0600 Subject: [PATCH] Add git-var a tool for reading interesting git variables. Sharing code between shell scripts and C is a challenge. The program git-var allows us to have a set of named values that a shell script can interrogate and a normal C program can simply call the functions that compute them. Allowing sharing when computing plain test values. Signed-off-by: Linus Torvalds --- var.c | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 var.c (limited to 'var.c') diff --git a/var.c b/var.c new file mode 100644 index 0000000000..488ec5147a --- /dev/null +++ b/var.c @@ -0,0 +1,65 @@ +/* + * GIT - The information manager from hell + * + * Copyright (C) Eric Biederman, 2005 + */ +#include "cache.h" +#include +#include +#include + +static char *var_usage = "git-var [-l | ]"; + +struct git_var { + const char *name; + char *(*read)(void); +}; +static struct git_var git_vars[] = { + { "GIT_COMMITTER_IDENT", git_committer_info }, + { "GIT_AUTHOR_IDENT", git_author_info }, + { "", NULL }, +}; + +static void list_vars(void) +{ + struct git_var *ptr; + for(ptr = git_vars; ptr->read; ptr++) { + printf("%s=%s\n", ptr->name, ptr->read()); + } +} + +static const char *read_var(const char *var) +{ + struct git_var *ptr; + const char *val; + val = NULL; + for(ptr = git_vars; ptr->read; ptr++) { + if (strcmp(var, ptr->name) == 0) { + val = ptr->read(); + break; + } + } + return val; +} + +int main(int argc, char **argv) +{ + const char *val; + if (argc != 2) { + usage(var_usage); + } + setup_ident(); + val = NULL; + + if (strcmp(argv[1], "-l") == 0) { + list_vars(); + return 0; + } + val = read_var(argv[1]); + if (!val) + usage(var_usage); + + printf("%s\n", val); + + return 0; +} -- cgit v1.2.3