6 #include "sass/context.h"
8 union Sass_Value* call_fn_foo(const union Sass_Value* s_args, Sass_Function_Entry cb, struct Sass_Compiler* comp)
10 // get context/option struct associated with this compiler
11 struct Sass_Context* ctx = sass_compiler_get_context(comp);
12 struct Sass_Options* opts = sass_compiler_get_options(comp);
13 // get information about previous importer entry from the stack
14 Sass_Import_Entry import = sass_compiler_get_last_import(comp);
15 const char* prev_abs_path = sass_import_get_abs_path(import);
16 const char* prev_imp_path = sass_import_get_imp_path(import);
17 // get the cookie from function descriptor
18 void* cookie = sass_function_get_cookie(cb);
19 // we actually abuse the void* to store an "int"
20 return sass_make_number((intptr_t)cookie, "px");
23 int main( int argc, const char* argv[] )
26 // get the input file from first argument or use default
27 const char* input = argc > 1 ? argv[1] : "styles.scss";
29 // create the file context and get all related structs
30 struct Sass_File_Context* file_ctx = sass_make_file_context(input);
31 struct Sass_Context* ctx = sass_file_context_get_context(file_ctx);
32 struct Sass_Options* ctx_opt = sass_context_get_options(ctx);
34 // allocate a custom function caller
35 Sass_Function_Entry fn_foo =
36 sass_make_function("foo()", call_fn_foo, (void*)42);
38 // create list of all custom functions
39 Sass_Function_List fn_list = sass_make_function_list(1);
40 sass_function_set_list_entry(fn_list, 0, fn_foo);
41 sass_option_set_c_functions(ctx_opt, fn_list);
43 // context is set up, call the compile step now
44 int status = sass_compile_file_context(file_ctx);
46 // print the result or the error to the stdout
47 if (status == 0) puts(sass_context_get_output_string(ctx));
48 else puts(sass_context_get_error_message(ctx));
50 // release allocated memory
51 sass_delete_file_context(file_ctx);
62 gcc -c main.c -o main.o
63 gcc -o sample main.o -lsass
64 echo "foo { margin: foo(); }" > foo.scss
65 ./sample foo.scss => "foo { margin: 42px }"