From b7fc9e0f6d6105ba2203f219743d4b269415e84b Mon Sep 17 00:00:00 2001 From: An-Cheng Huang Date: Mon, 12 Nov 2007 13:06:02 -0800 Subject: initial import from bash_3.1dfsg.orig.tar.gz --- examples/loadables/printenv.c | 71 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 examples/loadables/printenv.c (limited to 'examples/loadables/printenv.c') diff --git a/examples/loadables/printenv.c b/examples/loadables/printenv.c new file mode 100644 index 0000000..16f398f --- /dev/null +++ b/examples/loadables/printenv.c @@ -0,0 +1,71 @@ +/* + * printenv -- minimal builtin clone of BSD printenv(1). + * + * usage: printenv [varname] + * + */ + +#include +#include + +#include "builtins.h" +#include "shell.h" +#include "bashgetopt.h" + +extern char **export_env; + +int +printenv_builtin (list) + WORD_LIST *list; +{ + register char **envp; + int opt; + SHELL_VAR *var; + + reset_internal_getopt (); + while ((opt = internal_getopt (list, "")) != -1) + { + switch (opt) + { + default: + builtin_usage (); + return (EX_USAGE); + } + } + list = loptend; + + /* printenv */ + if (list == 0) + { + maybe_make_export_env (); /* this allows minimal code */ + for (envp = export_env; *envp; envp++) + printf ("%s\n", *envp); + return (EXECUTION_SUCCESS); + } + + /* printenv varname */ + var = find_variable (list->word->word); + if (var == 0 || (exported_p (var) == 0)) + return (EXECUTION_FAILURE); + + if (function_p (var)) + print_var_function (var); + else + print_var_value (var, 0); + + return (EXECUTION_SUCCESS); +} + +char *printenv_doc[] = { + "print values of environment variables", + (char *)NULL +}; + +struct builtin printenv_struct = { + "printenv", + printenv_builtin, + BUILTIN_ENABLED, + printenv_doc, + "printenv [varname]", + 0 +}; -- cgit v1.2.3