From fecaf2f5f66f8cb5598e55d493e4721554c5dcd5 Mon Sep 17 00:00:00 2001 From: Yousong Zhou Date: Wed, 17 Dec 2014 05:15:37 +0800 Subject: [PATCH] examples: add example code for json_script. Signed-off-by: Yousong Zhou --- examples/CMakeLists.txt | 2 + examples/json_script-example.c | 84 +++++++++++++++++++++++++++++++ examples/json_script-example.json | 33 ++++++++++++ 3 files changed, 119 insertions(+) create mode 100644 examples/json_script-example.c create mode 100644 examples/json_script-example.json diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt index a466dd6..6399c7a 100644 --- a/examples/CMakeLists.txt +++ b/examples/CMakeLists.txt @@ -17,3 +17,5 @@ TARGET_LINK_LIBRARIES(ustream-example ubox) ADD_EXECUTABLE(runqueue-example runqueue-example.c) TARGET_LINK_LIBRARIES(runqueue-example ubox) +ADD_EXECUTABLE(json_script-example json_script-example.c) +TARGET_LINK_LIBRARIES(json_script-example ubox blobmsg_json json_script ${json}) diff --git a/examples/json_script-example.c b/examples/json_script-example.c new file mode 100644 index 0000000..e3305de --- /dev/null +++ b/examples/json_script-example.c @@ -0,0 +1,84 @@ +#include +#include + +#include +#include "blobmsg.h" +#include "blobmsg_json.h" +#include "json_script.h" + +struct json_script_ctx jctx; +struct blob_buf b_vars; +struct blob_buf b_script; + +static void handle_command(struct json_script_ctx *ctx, const char *name, + struct blob_attr *data, struct blob_attr *vars) +{ + struct blob_attr *cur; + int rem; + + fprintf(stderr, "Command: %s", name); + blobmsg_for_each_attr(cur, data, rem) + fprintf(stderr, " %s", (char *) blobmsg_data(cur)); + fprintf(stderr, "\n"); +} + +static struct json_script_file * +handle_file(struct json_script_ctx *ctx, const char *filename) +{ + json_object *obj; + + obj = json_object_from_file(filename); + if (!obj) { + fprintf(stderr, "load JSON data from %s failed.\n", filename); + return NULL; + } + + blob_buf_init(&b_script, 0); + blobmsg_add_json_element(&b_script, "", obj); + json_object_put(obj); + + return json_script_file_from_blobmsg(filename, + blob_data(b_script.head), blob_len(b_script.head)); +} + +static void usage(const char *prog, int exit_code) +{ + fprintf(stderr, "Usage: %s [VARNAME=value] \n", prog); + exit(exit_code); +} + +int main(int argc, char *argv[]) +{ + int i; + char *file = NULL; + const char *prog = argv[0]; + + blobmsg_buf_init(&b_vars); + blobmsg_buf_init(&b_script); + + json_script_init(&jctx); + jctx.handle_command = handle_command; + jctx.handle_file = handle_file; + + for (i = 1; i < argc; i++) { + char *sep = strchr(argv[i], '='); + if (sep) { + *sep = '\0'; + blobmsg_add_string(&b_vars, argv[i], sep + 1); + } else if (!file) { + file = argv[i]; + } else { + usage(prog, -1); + } + } + if (i < argc || !file) + usage(prog, -2); + + json_script_run(&jctx, file, b_vars.head); + + json_script_free(&jctx); + blob_buf_free(&b_script); + blob_buf_free(&b_vars); + + return 0; +} diff --git a/examples/json_script-example.json b/examples/json_script-example.json new file mode 100644 index 0000000..45636b7 --- /dev/null +++ b/examples/json_script-example.json @@ -0,0 +1,33 @@ +[ + [ "exec", "%EXECVAR%", "/%%/" ], + [ "if", + [ "eq", "EQVAR", "eqval" ], + [ "exec_if", "%VAR%", "%%", "jk" ] + ], + [ "case", "CASEVAR", { + "caseval0": ["cmd_case_0", "cmd_case_arg0", "case_cmd_arg1"], + "caseval1": ["cmd_case_1", "cmd_case_arg0", "case_cmd_arg1"] + } ], + + [ "if", + [ "and", [ "eq", "EQVAR", "eqval" ], + [ "has", "HASVAR" ], + [ "regex", "REGEXVAR0", "regexval" ], + [ "regex", "REGEXVAR1", [ "regexval10", "regexval11" ] ], + [ "not", [ "eq", "NOTEQVAR", "noteqval" ] ] ], + [ "exec_if_and", "%ANDVAR%" ] + ], + + [ "if", + [ "or", [ "eq", "EQVAR", "eqval" ], + [ "has", "HASVAR" ], + [ "regex", "REGEXVAR0", "regexval" ], + [ "regex", "REGEXVAR1", [ "regexval10", "regexval11" ] ], + [ "not", [ "eq", "NOTEQVAR", "noteqval" ] ] ], + [ "exec_if_or", "%ORVAR%" ] + ], + + [ "return", "foobar" ], + + [ "exec_non_reachable", "Arghhh" ] +] -- 2.25.1